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-rw-r--r--erts/emulator/sys/common/erl_check_io.c24
-rw-r--r--erts/emulator/sys/common/erl_mmap.c596
-rw-r--r--erts/emulator/sys/common/erl_mmap.h32
-rw-r--r--erts/emulator/sys/common/erl_mseg.c392
-rw-r--r--erts/emulator/sys/common/erl_mseg.h19
-rw-r--r--erts/emulator/sys/common/erl_os_monotonic_time_extender.c2
-rw-r--r--erts/emulator/sys/common/erl_poll.c36
-rw-r--r--erts/emulator/sys/common/erl_poll.h24
-rw-r--r--erts/emulator/sys/ose/beam.lmconf26
-rw-r--r--erts/emulator/sys/ose/driver_int.h42
-rw-r--r--erts/emulator/sys/ose/erl_main.c54
-rw-r--r--erts/emulator/sys/ose/erl_ose_sys.h356
-rw-r--r--erts/emulator/sys/ose/erl_ose_sys_ddll.c127
-rw-r--r--erts/emulator/sys/ose/erl_poll.c818
-rw-r--r--erts/emulator/sys/ose/erts.sig17
-rw-r--r--erts/emulator/sys/ose/gcc_4.4.3_lm_ppc.lcf182
-rw-r--r--erts/emulator/sys/ose/gcc_4.6.3_lm_ppc.lcf242
-rw-r--r--erts/emulator/sys/ose/sys.c1847
-rw-r--r--erts/emulator/sys/ose/sys_float.c845
-rw-r--r--erts/emulator/sys/ose/sys_time.c57
-rw-r--r--erts/emulator/sys/unix/erl_child_setup.c560
-rw-r--r--erts/emulator/sys/unix/erl_child_setup.h77
-rw-r--r--erts/emulator/sys/unix/erl_unix_sys.h55
-rw-r--r--erts/emulator/sys/unix/sys.c1953
-rw-r--r--erts/emulator/sys/unix/sys_drivers.c1862
-rw-r--r--erts/emulator/sys/unix/sys_float.c28
-rw-r--r--erts/emulator/sys/unix/sys_time.c138
-rw-r--r--erts/emulator/sys/unix/sys_uds.c155
-rw-r--r--erts/emulator/sys/unix/sys_uds.h57
-rw-r--r--erts/emulator/sys/win32/erl_poll.c14
-rw-r--r--erts/emulator/sys/win32/erl_win32_sys_ddll.c3
-rw-r--r--erts/emulator/sys/win32/erl_win_dyn_driver.h18
-rw-r--r--erts/emulator/sys/win32/erl_win_sys.h14
-rw-r--r--erts/emulator/sys/win32/sys.c22
-rw-r--r--erts/emulator/sys/win32/sys_interrupt.c6
-rw-r--r--erts/emulator/sys/win32/sys_time.c7
36 files changed, 3365 insertions, 7342 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c
index 105b129065..f87196d724 100644
--- a/erts/emulator/sys/common/erl_check_io.c
+++ b/erts/emulator/sys/common/erl_check_io.c
@@ -1337,11 +1337,7 @@ print_select_op(erts_dsprintf_buf_t *dsbufp,
{
Port *pp = erts_drvport2port(ix);
erts_dsprintf(dsbufp,
-#ifdef __OSE__
- "driver_select(%p, %d,%s%s%s%s | %d, %d) "
-#else
"driver_select(%p, %d,%s%s%s%s, %d) "
-#endif
"by ",
ix,
(int) GET_FD(fd),
@@ -1861,25 +1857,6 @@ stale_drv_select(Eterm id, ErtsDrvEventState *state, int mode)
#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS
-#ifdef __OSE__
-static SafeHashValue drv_ev_state_hash(void *des)
-{
- ErtsSysFdType fd = ((ErtsDrvEventState *) des)->fd;
- /* We use hash on signo ^ id in order for steal to happen when the
- same signo + fd is selected on by two different ports */
- SafeHashValue val = (SafeHashValue)(fd->signo ^ fd->id);
- return val ^ (val >> 8);
-}
-
-static int drv_ev_state_cmp(void *des1, void *des2)
-{
- ErtsSysFdType fd1 = ((ErtsDrvEventState *) des1)->fd;
- ErtsSysFdType fd2 = ((ErtsDrvEventState *) des2)->fd;
- if (fd1->signo == fd2->signo && fd1->id == fd2->id)
- return 0;
- return 1;
-}
-#else /* !__OSE__ && !ERTS_SYS_CONTINOUS_FD_NUMBERS i.e. probably windows */
static SafeHashValue drv_ev_state_hash(void *des)
{
SafeHashValue val = (SafeHashValue) ((ErtsDrvEventState *) des)->fd;
@@ -1891,7 +1868,6 @@ static int drv_ev_state_cmp(void *des1, void *des2)
return ( ((ErtsDrvEventState *) des1)->fd == ((ErtsDrvEventState *) des2)->fd
? 0 : 1);
}
-#endif
static void *drv_ev_state_alloc(void *des_tmpl)
{
diff --git a/erts/emulator/sys/common/erl_mmap.c b/erts/emulator/sys/common/erl_mmap.c
index 754047829f..889d6f3868 100644
--- a/erts/emulator/sys/common/erl_mmap.c
+++ b/erts/emulator/sys/common/erl_mmap.c
@@ -51,23 +51,22 @@
#endif
/*
- * `mmap_state.sa.bot` and `mmap_state.sua.top` are read only after
+ * `mm->sa.bot` and `mm->sua.top` are read only after
* initialization, but the other pointers are not; i.e., only
* ERTS_MMAP_IN_SUPERCARRIER() is allowed without the mutex held.
*/
#define ERTS_MMAP_IN_SUPERCARRIER(PTR) \
- (((UWord) (PTR)) - ((UWord) mmap_state.sa.bot) \
- < ((UWord) mmap_state.sua.top) - ((UWord) mmap_state.sa.bot))
+ (((UWord) (PTR)) - ((UWord) mm->sa.bot) \
+ < ((UWord) mm->sua.top) - ((UWord) mm->sa.bot))
#define ERTS_MMAP_IN_SUPERALIGNED_AREA(PTR) \
- (ERTS_SMP_LC_ASSERT(erts_lc_mtx_is_locked(&mmap_state.mtx)), \
- (((UWord) (PTR)) - ((UWord) mmap_state.sa.bot) \
- < ((UWord) mmap_state.sa.top) - ((UWord) mmap_state.sa.bot)))
+ (ERTS_SMP_LC_ASSERT(erts_lc_mtx_is_locked(&mm->mtx)), \
+ (((UWord) (PTR)) - ((UWord) mm->sa.bot) \
+ < ((UWord) mm->sa.top) - ((UWord) mm->sa.bot)))
#define ERTS_MMAP_IN_SUPERUNALIGNED_AREA(PTR) \
- (ERTS_SMP_LC_ASSERT(erts_lc_mtx_is_locked(&mmap_state.mtx)), \
- (((UWord) (PTR)) - ((UWord) mmap_state.sua.bot) \
- < ((UWord) mmap_state.sua.top) - ((UWord) mmap_state.sua.bot)))
+ (ERTS_SMP_LC_ASSERT(erts_lc_mtx_is_locked(&mm->mtx)), \
+ (((UWord) (PTR)) - ((UWord) mm->sua.bot) \
+ < ((UWord) mm->sua.top) - ((UWord) mm->sua.bot)))
-int erts_have_erts_mmap;
UWord erts_page_inv_mask;
#if defined(DEBUG) || defined(ERTS_MMAP_DEBUG)
@@ -197,10 +196,10 @@ static ErtsMMapOp mmap_ops[ERTS_MMAP_OP_RINGBUF_SZ];
#define ERTS_MMAP_OP_LCK(RES, IN_SZ, OUT_SZ) \
do { \
- erts_smp_mtx_lock(&mmap_state.mtx); \
+ erts_smp_mtx_lock(&mm->mtx); \
ERTS_MMAP_OP_START((IN_SZ)); \
ERTS_MMAP_OP_END((RES), (OUT_SZ)); \
- erts_smp_mtx_unlock(&mmap_state.mtx); \
+ erts_smp_mtx_unlock(&mm->mtx); \
} while (0)
#define ERTS_MUNMAP_OP(PTR, SZ) \
@@ -219,9 +218,9 @@ static ErtsMMapOp mmap_ops[ERTS_MMAP_OP_RINGBUF_SZ];
#define ERTS_MUNMAP_OP_LCK(PTR, SZ) \
do { \
- erts_smp_mtx_lock(&mmap_state.mtx); \
+ erts_smp_mtx_lock(&mm->mtx); \
ERTS_MUNMAP_OP((PTR), (SZ)); \
- erts_smp_mtx_unlock(&mmap_state.mtx); \
+ erts_smp_mtx_unlock(&mm->mtx); \
} while (0)
#define ERTS_MREMAP_OP_START(OLD_PTR, OLD_SZ, IN_SZ) \
@@ -247,10 +246,10 @@ static ErtsMMapOp mmap_ops[ERTS_MMAP_OP_RINGBUF_SZ];
#define ERTS_MREMAP_OP_LCK(RES, OLD_PTR, OLD_SZ, IN_SZ, OUT_SZ) \
do { \
- erts_smp_mtx_lock(&mmap_state.mtx); \
+ erts_smp_mtx_lock(&mm->mtx); \
ERTS_MREMAP_OP_START((OLD_PTR), (OLD_SZ), (IN_SZ)); \
ERTS_MREMAP_OP_END((RES), (OUT_SZ)); \
- erts_smp_mtx_unlock(&mmap_state.mtx); \
+ erts_smp_mtx_unlock(&mm->mtx); \
} while (0)
#define ERTS_MMAP_OP_ABORT() \
@@ -294,7 +293,7 @@ typedef struct {
Uint nseg;
}ErtsFreeSegMap;
-static struct {
+struct ErtsMemMapper_ {
int (*reserve_physical)(char *, UWord);
void (*unreserve_physical)(char *, UWord);
int supercarrier;
@@ -346,54 +345,62 @@ static struct {
UWord used;
} os;
} size;
-} mmap_state;
+};
+
+ErtsMemMapper erts_dflt_mmapper;
+
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ErtsMemMapper erts_literal_mmapper;
+char* erts_literals_start;
+UWord erts_literals_size;
+#endif
#define ERTS_MMAP_SIZE_SC_SA_INC(SZ) \
do { \
- mmap_state.size.supercarrier.used.total += (SZ); \
- mmap_state.size.supercarrier.used.sa += (SZ); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.total \
- <= mmap_state.size.supercarrier.total); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.sa \
- <= mmap_state.size.supercarrier.used.total); \
+ mm->size.supercarrier.used.total += (SZ); \
+ mm->size.supercarrier.used.sa += (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.total \
+ <= mm->size.supercarrier.total); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.sa \
+ <= mm->size.supercarrier.used.total); \
} while (0)
#define ERTS_MMAP_SIZE_SC_SA_DEC(SZ) \
do { \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.total >= (SZ)); \
- mmap_state.size.supercarrier.used.total -= (SZ); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.sa >= (SZ)); \
- mmap_state.size.supercarrier.used.sa -= (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.total >= (SZ)); \
+ mm->size.supercarrier.used.total -= (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.sa >= (SZ)); \
+ mm->size.supercarrier.used.sa -= (SZ); \
} while (0)
#define ERTS_MMAP_SIZE_SC_SUA_INC(SZ) \
do { \
- mmap_state.size.supercarrier.used.total += (SZ); \
- mmap_state.size.supercarrier.used.sua += (SZ); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.total \
- <= mmap_state.size.supercarrier.total); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.sua \
- <= mmap_state.size.supercarrier.used.total); \
+ mm->size.supercarrier.used.total += (SZ); \
+ mm->size.supercarrier.used.sua += (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.total \
+ <= mm->size.supercarrier.total); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.sua \
+ <= mm->size.supercarrier.used.total); \
} while (0)
#define ERTS_MMAP_SIZE_SC_SUA_DEC(SZ) \
do { \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.total >= (SZ)); \
- mmap_state.size.supercarrier.used.total -= (SZ); \
- ERTS_MMAP_ASSERT(mmap_state.size.supercarrier.used.sua >= (SZ)); \
- mmap_state.size.supercarrier.used.sua -= (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.total >= (SZ)); \
+ mm->size.supercarrier.used.total -= (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.supercarrier.used.sua >= (SZ)); \
+ mm->size.supercarrier.used.sua -= (SZ); \
} while (0)
#define ERTS_MMAP_SIZE_OS_INC(SZ) \
do { \
- ERTS_MMAP_ASSERT(mmap_state.size.os.used + (SZ) >= (SZ)); \
- mmap_state.size.os.used += (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.os.used + (SZ) >= (SZ)); \
+ mm->size.os.used += (SZ); \
} while (0)
#define ERTS_MMAP_SIZE_OS_DEC(SZ) \
do { \
- ERTS_MMAP_ASSERT(mmap_state.size.os.used >= (SZ)); \
- mmap_state.size.os.used -= (SZ); \
+ ERTS_MMAP_ASSERT(mm->size.os.used >= (SZ)); \
+ mm->size.os.used -= (SZ); \
} while (0)
static void
-add_free_desc_area(char *start, char *end)
+add_free_desc_area(ErtsMemMapper* mm, char *start, char *end)
{
ERTS_MMAP_ASSERT(end == (void *) 0 || end > start);
if (sizeof(ErtsFreeSegDesc) <= ((UWord) end) - ((UWord) start)) {
@@ -403,7 +410,7 @@ add_free_desc_area(char *start, char *end)
no = 1;
prev_desc = (ErtsFreeSegDesc *) start;
- prev_desc->start = mmap_state.desc.free_list;
+ prev_desc->start = mm->desc.free_list;
desc = (ErtsFreeSegDesc *) (start + sizeof(ErtsFreeSegDesc));
desc_end = start + 2*sizeof(ErtsFreeSegDesc);
@@ -414,59 +421,59 @@ add_free_desc_area(char *start, char *end)
desc_end += sizeof(ErtsFreeSegDesc);
no++;
}
- mmap_state.desc.free_list = (char *) prev_desc;
- mmap_state.no.free_seg_descs += no;
+ mm->desc.free_list = (char *) prev_desc;
+ mm->no.free_seg_descs += no;
}
}
static ErtsFreeSegDesc *
-add_unused_free_desc_area(void)
+add_unused_free_desc_area(ErtsMemMapper* mm)
{
char *ptr;
- if (!mmap_state.desc.unused_start)
+ if (!mm->desc.unused_start)
return NULL;
- ERTS_MMAP_ASSERT(mmap_state.desc.unused_end);
+ ERTS_MMAP_ASSERT(mm->desc.unused_end);
ERTS_MMAP_ASSERT(ERTS_PAGEALIGNED_SIZE
- <= mmap_state.desc.unused_end - mmap_state.desc.unused_start);
+ <= mm->desc.unused_end - mm->desc.unused_start);
- ptr = mmap_state.desc.unused_start + ERTS_PAGEALIGNED_SIZE;
- add_free_desc_area(mmap_state.desc.unused_start, ptr);
+ ptr = mm->desc.unused_start + ERTS_PAGEALIGNED_SIZE;
+ add_free_desc_area(mm, mm->desc.unused_start, ptr);
- if ((mmap_state.desc.unused_end - ptr) >= ERTS_PAGEALIGNED_SIZE)
- mmap_state.desc.unused_start = ptr;
+ if ((mm->desc.unused_end - ptr) >= ERTS_PAGEALIGNED_SIZE)
+ mm->desc.unused_start = ptr;
else
- mmap_state.desc.unused_end = mmap_state.desc.unused_start = NULL;
+ mm->desc.unused_end = mm->desc.unused_start = NULL;
- ERTS_MMAP_ASSERT(mmap_state.desc.free_list);
- return (ErtsFreeSegDesc *) mmap_state.desc.free_list;
+ ERTS_MMAP_ASSERT(mm->desc.free_list);
+ return (ErtsFreeSegDesc *) mm->desc.free_list;
}
static ERTS_INLINE ErtsFreeSegDesc *
-alloc_desc(void)
+alloc_desc(ErtsMemMapper* mm)
{
ErtsFreeSegDesc *res;
- res = (ErtsFreeSegDesc *) mmap_state.desc.free_list;
+ res = (ErtsFreeSegDesc *) mm->desc.free_list;
if (!res) {
- res = add_unused_free_desc_area();
+ res = add_unused_free_desc_area(mm);
if (!res)
return NULL;
}
- mmap_state.desc.free_list = res->start;
- ASSERT(mmap_state.no.free_segs.curr < mmap_state.no.free_seg_descs);
- mmap_state.no.free_segs.curr++;
- if (mmap_state.no.free_segs.max < mmap_state.no.free_segs.curr)
- mmap_state.no.free_segs.max = mmap_state.no.free_segs.curr;
+ mm->desc.free_list = res->start;
+ ASSERT(mm->no.free_segs.curr < mm->no.free_seg_descs);
+ mm->no.free_segs.curr++;
+ if (mm->no.free_segs.max < mm->no.free_segs.curr)
+ mm->no.free_segs.max = mm->no.free_segs.curr;
return res;
}
static ERTS_INLINE void
-free_desc(ErtsFreeSegDesc *desc)
+free_desc(ErtsMemMapper* mm, ErtsFreeSegDesc *desc)
{
- desc->start = mmap_state.desc.free_list;
- mmap_state.desc.free_list = (char *) desc;
- ERTS_MMAP_ASSERT(mmap_state.no.free_segs.curr > 0);
- mmap_state.no.free_segs.curr--;
+ desc->start = mm->desc.free_list;
+ mm->desc.free_list = (char *) desc;
+ ERTS_MMAP_ASSERT(mm->no.free_segs.curr > 0);
+ mm->no.free_segs.curr--;
}
static ERTS_INLINE ErtsFreeSegDesc* anode_to_desc(RBTNode* anode)
@@ -1233,7 +1240,7 @@ Eterm build_free_seg_list(Process* p, ErtsFreeSegMap* map)
# define ERTS_MMAP_FD (-1)
# else
# define ERTS_MMAP_FLAGS (MAP_PRIVATE)
-# define ERTS_MMAP_FD mmap_state.mmap_fd
+# define ERTS_MMAP_FD mm->mmap_fd
# endif
#endif
@@ -1334,7 +1341,7 @@ os_unreserve_physical(char *ptr, UWord size)
void *res = mmap((void *) ptr, (size_t) size, ERTS_MMAP_UNRESERVE_PROT,
ERTS_MMAP_UNRESERVE_FLAGS, ERTS_MMAP_FD, 0);
if (res == (void *) MAP_FAILED)
- erl_exit(ERTS_ABORT_EXIT, "Failed to unreserve memory");
+ erts_exit(ERTS_ABORT_EXIT, "Failed to unreserve memory");
}
static void *
@@ -1378,11 +1385,12 @@ static void unreserve_noop(char *ptr, UWord size)
}
static UWord
-alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
+alloc_desc_insert_free_seg(ErtsMemMapper* mm,
+ ErtsFreeSegMap *map, char* start, char* end)
{
char *ptr;
ErtsFreeSegMap *da_map;
- ErtsFreeSegDesc *desc = alloc_desc();
+ ErtsFreeSegDesc *desc = alloc_desc(mm);
if (desc) {
insert_free_seg(map, desc, start, end);
return 0;
@@ -1395,13 +1403,13 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
*/
#if ERTS_HAVE_OS_MMAP
- if (!mmap_state.no_os_mmap) {
- ptr = os_mmap(mmap_state.desc.new_area_hint, ERTS_PAGEALIGNED_SIZE, 0);
+ if (!mm->no_os_mmap) {
+ ptr = os_mmap(mm->desc.new_area_hint, ERTS_PAGEALIGNED_SIZE, 0);
if (ptr) {
- mmap_state.desc.new_area_hint = ptr+ERTS_PAGEALIGNED_SIZE;
+ mm->desc.new_area_hint = ptr+ERTS_PAGEALIGNED_SIZE;
ERTS_MMAP_SIZE_OS_INC(ERTS_PAGEALIGNED_SIZE);
- add_free_desc_area(ptr, ptr+ERTS_PAGEALIGNED_SIZE);
- desc = alloc_desc();
+ add_free_desc_area(mm, ptr, ptr+ERTS_PAGEALIGNED_SIZE);
+ desc = alloc_desc(mm);
ERTS_MMAP_ASSERT(desc);
insert_free_seg(map, desc, start, end);
return 0;
@@ -1412,20 +1420,20 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
/*
* ...then try to find a good place in the supercarrier...
*/
- da_map = &mmap_state.sua.map;
+ da_map = &mm->sua.map;
desc = lookup_free_seg(da_map, ERTS_PAGEALIGNED_SIZE);
if (desc) {
- if (mmap_state.reserve_physical(desc->start, ERTS_PAGEALIGNED_SIZE))
+ if (mm->reserve_physical(desc->start, ERTS_PAGEALIGNED_SIZE))
ERTS_MMAP_SIZE_SC_SUA_INC(ERTS_PAGEALIGNED_SIZE);
else
desc = NULL;
}
else {
- da_map = &mmap_state.sa.map;
+ da_map = &mm->sa.map;
desc = lookup_free_seg(da_map, ERTS_PAGEALIGNED_SIZE);
if (desc) {
- if (mmap_state.reserve_physical(desc->start, ERTS_PAGEALIGNED_SIZE))
+ if (mm->reserve_physical(desc->start, ERTS_PAGEALIGNED_SIZE))
ERTS_MMAP_SIZE_SC_SA_INC(ERTS_PAGEALIGNED_SIZE);
else
desc = NULL;
@@ -1433,15 +1441,15 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
}
if (desc) {
char *da_end = desc->start + ERTS_PAGEALIGNED_SIZE;
- add_free_desc_area(desc->start, da_end);
+ add_free_desc_area(mm, desc->start, da_end);
if (da_end != desc->end)
resize_free_seg(da_map, desc, da_end, desc->end);
else {
delete_free_seg(da_map, desc);
- free_desc(desc);
+ free_desc(mm, desc);
}
- desc = alloc_desc();
+ desc = alloc_desc(mm);
ERTS_MMAP_ASSERT(desc);
insert_free_seg(map, desc, start, end);
return 0;
@@ -1454,10 +1462,10 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
ptr = start + ERTS_PAGEALIGNED_SIZE;
ERTS_MMAP_ASSERT(ptr <= end);
- add_free_desc_area(start, ptr);
+ add_free_desc_area(mm, start, ptr);
if (ptr != end) {
- desc = alloc_desc();
+ desc = alloc_desc(mm);
ERTS_MMAP_ASSERT(desc);
insert_free_seg(map, desc, ptr, end);
}
@@ -1466,46 +1474,46 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
}
void *
-erts_mmap(Uint32 flags, UWord *sizep)
+erts_mmap(ErtsMemMapper* mm, Uint32 flags, UWord *sizep)
{
char *seg;
UWord asize = ERTS_PAGEALIGNED_CEILING(*sizep);
/* Map in premapped supercarrier */
- if (mmap_state.supercarrier && !(ERTS_MMAPFLG_OS_ONLY & flags)) {
+ if (mm->supercarrier && !(ERTS_MMAPFLG_OS_ONLY & flags)) {
char *end;
ErtsFreeSegDesc *desc;
Uint32 superaligned = (ERTS_MMAPFLG_SUPERALIGNED & flags);
- erts_smp_mtx_lock(&mmap_state.mtx);
+ erts_smp_mtx_lock(&mm->mtx);
ERTS_MMAP_OP_START(*sizep);
if (!superaligned) {
- desc = lookup_free_seg(&mmap_state.sua.map, asize);
+ desc = lookup_free_seg(&mm->sua.map, asize);
if (desc) {
seg = desc->start;
end = seg+asize;
- if (!mmap_state.reserve_physical(seg, asize))
+ if (!mm->reserve_physical(seg, asize))
goto supercarrier_reserve_failure;
if (desc->end == end) {
- delete_free_seg(&mmap_state.sua.map, desc);
- free_desc(desc);
+ delete_free_seg(&mm->sua.map, desc);
+ free_desc(mm, desc);
}
else {
ERTS_MMAP_ASSERT(end < desc->end);
- resize_free_seg(&mmap_state.sua.map, desc, end, desc->end);
+ resize_free_seg(&mm->sua.map, desc, end, desc->end);
}
ERTS_MMAP_SIZE_SC_SUA_INC(asize);
goto supercarrier_success;
}
- if (asize <= mmap_state.sua.bot - mmap_state.sa.top) {
- if (!mmap_state.reserve_physical(mmap_state.sua.bot - asize,
+ if (asize <= mm->sua.bot - mm->sa.top) {
+ if (!mm->reserve_physical(mm->sua.bot - asize,
asize))
goto supercarrier_reserve_failure;
- mmap_state.sua.bot -= asize;
- seg = mmap_state.sua.bot;
+ mm->sua.bot -= asize;
+ seg = mm->sua.bot;
ERTS_MMAP_SIZE_SC_SUA_INC(asize);
goto supercarrier_success;
}
@@ -1513,84 +1521,84 @@ erts_mmap(Uint32 flags, UWord *sizep)
asize = ERTS_SUPERALIGNED_CEILING(asize);
- desc = lookup_free_seg(&mmap_state.sa.map, asize);
+ desc = lookup_free_seg(&mm->sa.map, asize);
if (desc) {
char *start = seg = desc->start;
seg = (char *) ERTS_SUPERALIGNED_CEILING(seg);
end = seg+asize;
- if (!mmap_state.reserve_physical(start, (UWord) (end - start)))
+ if (!mm->reserve_physical(start, (UWord) (end - start)))
goto supercarrier_reserve_failure;
ERTS_MMAP_SIZE_SC_SA_INC(asize);
if (desc->end == end) {
if (start != seg)
- resize_free_seg(&mmap_state.sa.map, desc, start, seg);
+ resize_free_seg(&mm->sa.map, desc, start, seg);
else {
- delete_free_seg(&mmap_state.sa.map, desc);
- free_desc(desc);
+ delete_free_seg(&mm->sa.map, desc);
+ free_desc(mm, desc);
}
}
else {
ERTS_MMAP_ASSERT(end < desc->end);
- resize_free_seg(&mmap_state.sa.map, desc, end, desc->end);
+ resize_free_seg(&mm->sa.map, desc, end, desc->end);
if (start != seg) {
UWord ad_sz;
- ad_sz = alloc_desc_insert_free_seg(&mmap_state.sua.map,
+ ad_sz = alloc_desc_insert_free_seg(mm, &mm->sua.map,
start, seg);
start += ad_sz;
if (start != seg)
- mmap_state.unreserve_physical(start, (UWord) (seg - start));
+ mm->unreserve_physical(start, (UWord) (seg - start));
}
}
goto supercarrier_success;
}
if (superaligned) {
- char *start = mmap_state.sa.top;
+ char *start = mm->sa.top;
seg = (char *) ERTS_SUPERALIGNED_CEILING(start);
- if (asize + (seg - start) <= mmap_state.sua.bot - start) {
+ if (asize + (seg - start) <= mm->sua.bot - start) {
end = seg + asize;
- if (!mmap_state.reserve_physical(start, (UWord) (end - start)))
+ if (!mm->reserve_physical(start, (UWord) (end - start)))
goto supercarrier_reserve_failure;
- mmap_state.sa.top = end;
+ mm->sa.top = end;
ERTS_MMAP_SIZE_SC_SA_INC(asize);
if (start != seg) {
UWord ad_sz;
- ad_sz = alloc_desc_insert_free_seg(&mmap_state.sua.map,
+ ad_sz = alloc_desc_insert_free_seg(mm, &mm->sua.map,
start, seg);
start += ad_sz;
if (start != seg)
- mmap_state.unreserve_physical(start, (UWord) (seg - start));
+ mm->unreserve_physical(start, (UWord) (seg - start));
}
goto supercarrier_success;
}
- desc = lookup_free_seg(&mmap_state.sua.map, asize + ERTS_SUPERALIGNED_SIZE);
+ desc = lookup_free_seg(&mm->sua.map, asize + ERTS_SUPERALIGNED_SIZE);
if (desc) {
char *org_start = desc->start;
char *org_end = desc->end;
seg = (char *) ERTS_SUPERALIGNED_CEILING(org_start);
end = seg + asize;
- if (!mmap_state.reserve_physical(seg, (UWord) (org_end - seg)))
+ if (!mm->reserve_physical(seg, (UWord) (org_end - seg)))
goto supercarrier_reserve_failure;
ERTS_MMAP_SIZE_SC_SUA_INC(asize);
if (org_start != seg) {
ERTS_MMAP_ASSERT(org_start < seg);
- resize_free_seg(&mmap_state.sua.map, desc, org_start, seg);
+ resize_free_seg(&mm->sua.map, desc, org_start, seg);
desc = NULL;
}
if (end != org_end) {
UWord ad_sz = 0;
ERTS_MMAP_ASSERT(end < org_end);
if (desc)
- resize_free_seg(&mmap_state.sua.map, desc, end, org_end);
+ resize_free_seg(&mm->sua.map, desc, end, org_end);
else
- ad_sz = alloc_desc_insert_free_seg(&mmap_state.sua.map,
+ ad_sz = alloc_desc_insert_free_seg(mm, &mm->sua.map,
end, org_end);
end += ad_sz;
if (end != org_end)
- mmap_state.unreserve_physical(end,
+ mm->unreserve_physical(end,
(UWord) (org_end - end));
}
goto supercarrier_success;
@@ -1598,12 +1606,12 @@ erts_mmap(Uint32 flags, UWord *sizep)
}
ERTS_MMAP_OP_ABORT();
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
}
#if ERTS_HAVE_OS_MMAP
/* Map using OS primitives */
- if (!(ERTS_MMAPFLG_SUPERCARRIER_ONLY & flags) && !mmap_state.no_os_mmap) {
+ if (!(ERTS_MMAPFLG_SUPERCARRIER_ONLY & flags) && !mm->no_os_mmap) {
if (!(ERTS_MMAPFLG_SUPERALIGNED & flags)) {
seg = os_mmap(NULL, asize, 0);
if (!seg)
@@ -1661,25 +1669,25 @@ supercarrier_success:
#endif
ERTS_MMAP_OP_END(seg, asize);
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
*sizep = asize;
return (void *) seg;
supercarrier_reserve_failure:
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
*sizep = 0;
return NULL;
}
void
-erts_munmap(Uint32 flags, void *ptr, UWord size)
+erts_munmap(ErtsMemMapper* mm, Uint32 flags, void *ptr, UWord size)
{
ERTS_MMAP_ASSERT(ERTS_IS_PAGEALIGNED(ptr));
ERTS_MMAP_ASSERT(ERTS_IS_PAGEALIGNED(size));
if (!ERTS_MMAP_IN_SUPERCARRIER(ptr)) {
- ERTS_MMAP_ASSERT(!mmap_state.no_os_mmap);
+ ERTS_MMAP_ASSERT(!mm->no_os_mmap);
#if ERTS_HAVE_OS_MMAP
ERTS_MUNMAP_OP_LCK(ptr, size);
ERTS_MMAP_SIZE_OS_DEC(size);
@@ -1692,45 +1700,45 @@ erts_munmap(Uint32 flags, void *ptr, UWord size)
ErtsFreeSegDesc *prev, *next, *desc;
UWord ad_sz = 0;
- ERTS_MMAP_ASSERT(mmap_state.supercarrier);
+ ERTS_MMAP_ASSERT(mm->supercarrier);
start = (char *) ptr;
end = start + size;
- erts_smp_mtx_lock(&mmap_state.mtx);
+ erts_smp_mtx_lock(&mm->mtx);
ERTS_MUNMAP_OP(ptr, size);
if (ERTS_MMAP_IN_SUPERALIGNED_AREA(ptr)) {
- map = &mmap_state.sa.map;
+ map = &mm->sa.map;
adjacent_free_seg(map, start, end, &prev, &next);
ERTS_MMAP_SIZE_SC_SA_DEC(size);
- if (end == mmap_state.sa.top) {
+ if (end == mm->sa.top) {
ERTS_MMAP_ASSERT(!next);
if (prev) {
start = prev->start;
delete_free_seg(map, prev);
- free_desc(prev);
+ free_desc(mm, prev);
}
- mmap_state.sa.top = start;
+ mm->sa.top = start;
goto supercarrier_success;
}
}
else {
- map = &mmap_state.sua.map;
+ map = &mm->sua.map;
adjacent_free_seg(map, start, end, &prev, &next);
ERTS_MMAP_SIZE_SC_SUA_DEC(size);
- if (start == mmap_state.sua.bot) {
+ if (start == mm->sua.bot) {
ERTS_MMAP_ASSERT(!prev);
if (next) {
end = next->end;
delete_free_seg(map, next);
- free_desc(next);
+ free_desc(mm, next);
}
- mmap_state.sua.bot = end;
+ mm->sua.bot = end;
goto supercarrier_success;
}
}
@@ -1742,7 +1750,7 @@ erts_munmap(Uint32 flags, void *ptr, UWord size)
end = next->end;
if (prev) {
delete_free_seg(map, next);
- free_desc(next);
+ free_desc(mm, next);
goto save_prev;
}
desc = next;
@@ -1756,7 +1764,7 @@ erts_munmap(Uint32 flags, void *ptr, UWord size)
if (desc)
resize_free_seg(map, desc, start, end);
else
- ad_sz = alloc_desc_insert_free_seg(map, start, end);
+ ad_sz = alloc_desc_insert_free_seg(mm, map, start, end);
supercarrier_success: {
UWord unres_sz;
@@ -1764,30 +1772,32 @@ erts_munmap(Uint32 flags, void *ptr, UWord size)
ERTS_MMAP_ASSERT(size >= ad_sz);
unres_sz = size - ad_sz;
if (unres_sz)
- mmap_state.unreserve_physical(((char *) ptr) + ad_sz, unres_sz);
+ mm->unreserve_physical(((char *) ptr) + ad_sz, unres_sz);
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
}
}
}
static void *
-remap_move(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
+remap_move(ErtsMemMapper* mm,
+ Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
{
UWord size = *sizep;
- void *new_ptr = erts_mmap(flags, &size);
+ void *new_ptr = erts_mmap(mm, flags, &size);
if (!new_ptr)
return NULL;
*sizep = size;
if (old_size < size)
size = old_size;
sys_memcpy(new_ptr, ptr, (size_t) size);
- erts_munmap(flags, ptr, old_size);
+ erts_munmap(mm, flags, ptr, old_size);
return new_ptr;
}
void *
-erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
+erts_mremap(ErtsMemMapper* mm,
+ Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
{
void *new_ptr;
Uint32 superaligned;
@@ -1799,11 +1809,11 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
if (!ERTS_MMAP_IN_SUPERCARRIER(ptr)) {
- ERTS_MMAP_ASSERT(!mmap_state.no_os_mmap);
+ ERTS_MMAP_ASSERT(!mm->no_os_mmap);
- if (!(ERTS_MMAPFLG_OS_ONLY & flags) && mmap_state.supercarrier) {
- new_ptr = remap_move(ERTS_MMAPFLG_SUPERCARRIER_ONLY|flags, ptr,
- old_size, sizep);
+ if (!(ERTS_MMAPFLG_OS_ONLY & flags) && mm->supercarrier) {
+ new_ptr = remap_move(mm, ERTS_MMAPFLG_SUPERCARRIER_ONLY|flags,
+ ptr, old_size, sizep);
if (new_ptr)
return new_ptr;
}
@@ -1850,7 +1860,7 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
#endif
#if ERTS_HAVE_OS_MREMAP
if (superaligned)
- return remap_move(flags, new_ptr, old_size, sizep);
+ return remap_move(mm, flags, new_ptr, old_size, sizep);
else {
new_ptr = os_mremap(ptr, old_size, asize, 0);
if (!new_ptr)
@@ -1872,10 +1882,10 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
ErtsFreeSegDesc *prev, *next;
UWord ad_sz = 0;
- ERTS_MMAP_ASSERT(mmap_state.supercarrier);
+ ERTS_MMAP_ASSERT(mm->supercarrier);
if (ERTS_MMAPFLG_OS_ONLY & flags)
- return remap_move(flags, ptr, old_size, sizep);
+ return remap_move(mm, flags, ptr, old_size, sizep);
superaligned = (ERTS_MMAPFLG_SUPERALIGNED & flags);
@@ -1883,19 +1893,19 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
? ERTS_SUPERALIGNED_CEILING(*sizep)
: ERTS_PAGEALIGNED_CEILING(*sizep));
- erts_smp_mtx_lock(&mmap_state.mtx);
+ erts_smp_mtx_lock(&mm->mtx);
if (ERTS_MMAP_IN_SUPERALIGNED_AREA(ptr)
- ? (!superaligned && lookup_free_seg(&mmap_state.sua.map, asize))
- : (superaligned && lookup_free_seg(&mmap_state.sa.map, asize))) {
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ ? (!superaligned && lookup_free_seg(&mm->sua.map, asize))
+ : (superaligned && lookup_free_seg(&mm->sa.map, asize))) {
+ erts_smp_mtx_unlock(&mm->mtx);
/*
* Segment currently in wrong area (due to a previous memory
* shortage), move it to the right area.
* (remap_move() will succeed)
*/
- return remap_move(ERTS_MMAPFLG_SUPERCARRIER_ONLY|flags, ptr,
- old_size, sizep);
+ return remap_move(mm, ERTS_MMAPFLG_SUPERCARRIER_ONLY|flags,
+ ptr, old_size, sizep);
}
ERTS_MREMAP_OP_START(ptr, old_size, *sizep);
@@ -1917,18 +1927,18 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
UWord unres_sz;
new_ptr = ptr;
if (!ERTS_MMAP_IN_SUPERALIGNED_AREA(ptr)) {
- map = &mmap_state.sua.map;
+ map = &mm->sua.map;
ERTS_MMAP_SIZE_SC_SUA_DEC(old_size - asize);
}
else {
- if (end == mmap_state.sa.top) {
- mmap_state.sa.top = new_end;
- mmap_state.unreserve_physical(((char *) ptr) + asize,
+ if (end == mm->sa.top) {
+ mm->sa.top = new_end;
+ mm->unreserve_physical(((char *) ptr) + asize,
old_size - asize);
goto supercarrier_resize_success;
}
ERTS_MMAP_SIZE_SC_SA_DEC(old_size - asize);
- map = &mmap_state.sa.map;
+ map = &mm->sa.map;
}
adjacent_free_seg(map, start, end, &prev, &next);
@@ -1936,11 +1946,11 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
if (next)
resize_free_seg(map, next, new_end, next->end);
else
- ad_sz = alloc_desc_insert_free_seg(map, new_end, end);
+ ad_sz = alloc_desc_insert_free_seg(mm, map, new_end, end);
ERTS_MMAP_ASSERT(old_size - asize >= ad_sz);
unres_sz = old_size - asize - ad_sz;
if (unres_sz)
- mmap_state.unreserve_physical(((char *) ptr) + asize + ad_sz,
+ mm->unreserve_physical(((char *) ptr) + asize + ad_sz,
unres_sz);
goto supercarrier_resize_success;
}
@@ -1950,17 +1960,17 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
ERTS_MMAP_ASSERT(ERTS_IS_PAGEALIGNED(old_size));
ERTS_MMAP_ASSERT(ERTS_IS_PAGEALIGNED(asize));
- adjacent_free_seg(&mmap_state.sua.map, start, end, &prev, &next);
+ adjacent_free_seg(&mm->sua.map, start, end, &prev, &next);
if (next && new_end <= next->end) {
- if (!mmap_state.reserve_physical(((char *) ptr) + old_size,
+ if (!mm->reserve_physical(((char *) ptr) + old_size,
asize - old_size))
goto supercarrier_reserve_failure;
if (new_end < next->end)
- resize_free_seg(&mmap_state.sua.map, next, new_end, next->end);
+ resize_free_seg(&mm->sua.map, next, new_end, next->end);
else {
- delete_free_seg(&mmap_state.sua.map, next);
- free_desc(next);
+ delete_free_seg(&mm->sua.map, next);
+ free_desc(mm, next);
}
new_ptr = ptr;
ERTS_MMAP_SIZE_SC_SUA_INC(asize - old_size);
@@ -1969,28 +1979,28 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
}
else { /* Superaligned area */
- if (end == mmap_state.sa.top) {
- if (new_end <= mmap_state.sua.bot) {
- if (!mmap_state.reserve_physical(((char *) ptr) + old_size,
+ if (end == mm->sa.top) {
+ if (new_end <= mm->sua.bot) {
+ if (!mm->reserve_physical(((char *) ptr) + old_size,
asize - old_size))
goto supercarrier_reserve_failure;
- mmap_state.sa.top = new_end;
+ mm->sa.top = new_end;
new_ptr = ptr;
ERTS_MMAP_SIZE_SC_SA_INC(asize - old_size);
goto supercarrier_resize_success;
}
}
else {
- adjacent_free_seg(&mmap_state.sa.map, start, end, &prev, &next);
+ adjacent_free_seg(&mm->sa.map, start, end, &prev, &next);
if (next && new_end <= next->end) {
- if (!mmap_state.reserve_physical(((char *) ptr) + old_size,
+ if (!mm->reserve_physical(((char *) ptr) + old_size,
asize - old_size))
goto supercarrier_reserve_failure;
if (new_end < next->end)
- resize_free_seg(&mmap_state.sa.map, next, new_end, next->end);
+ resize_free_seg(&mm->sa.map, next, new_end, next->end);
else {
- delete_free_seg(&mmap_state.sa.map, next);
- free_desc(next);
+ delete_free_seg(&mm->sa.map, next);
+ free_desc(mm, next);
}
new_ptr = ptr;
ERTS_MMAP_SIZE_SC_SA_INC(asize - old_size);
@@ -2000,12 +2010,12 @@ erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep)
}
ERTS_MMAP_OP_ABORT();
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
/* Failed to resize... */
}
- return remap_move(flags, ptr, old_size, sizep);
+ return remap_move(mm, flags, ptr, old_size, sizep);
supercarrier_resize_success:
@@ -2022,25 +2032,24 @@ supercarrier_resize_success:
#endif
ERTS_MREMAP_OP_END(new_ptr, asize);
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
*sizep = asize;
return new_ptr;
supercarrier_reserve_failure:
ERTS_MREMAP_OP_END(NULL, old_size);
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ erts_smp_mtx_unlock(&mm->mtx);
*sizep = old_size;
return NULL;
}
-int erts_mmap_in_supercarrier(void *ptr)
+int erts_mmap_in_supercarrier(ErtsMemMapper* mm, void *ptr)
{
return ERTS_MMAP_IN_SUPERCARRIER(ptr);
}
-
static struct {
Eterm total;
Eterm total_sa;
@@ -2103,8 +2112,9 @@ static void hard_dbg_mseg_init(void);
#endif
void
-erts_mmap_init(ErtsMMapInit *init)
+erts_mmap_init(ErtsMemMapper* mm, ErtsMMapInit *init)
{
+ static int is_first_call = 1;
int virtual_map = 0;
char *start = NULL, *end = NULL;
UWord pagesize;
@@ -2126,25 +2136,25 @@ erts_mmap_init(ErtsMMapInit *init)
#endif
erts_page_inv_mask = pagesize - 1;
if (pagesize & erts_page_inv_mask)
- erl_exit(-1, "erts_mmap: Invalid pagesize: %bpu\n",
+ erts_exit(1, "erts_mmap: Invalid pagesize: %bpu\n",
pagesize);
ERTS_MMAP_OP_RINGBUF_INIT();
- erts_have_erts_mmap = 0;
-
- mmap_state.supercarrier = 0;
- mmap_state.reserve_physical = reserve_noop;
- mmap_state.unreserve_physical = unreserve_noop;
+ mm->supercarrier = 0;
+ mm->reserve_physical = reserve_noop;
+ mm->unreserve_physical = unreserve_noop;
#if HAVE_MMAP && !defined(MAP_ANON)
- mmap_state.mmap_fd = open("/dev/zero", O_RDWR);
- if (mmap_state.mmap_fd < 0)
- erl_exit(-1, "erts_mmap: Failed to open /dev/zero\n");
+ mm->mmap_fd = open("/dev/zero", O_RDWR);
+ if (mm->mmap_fd < 0)
+ erts_exit(1, "erts_mmap: Failed to open /dev/zero\n");
#endif
- erts_smp_mtx_init(&mmap_state.mtx, "erts_mmap");
- erts_mtx_init(&am.init_mutex, "mmap_init_atoms");
+ erts_smp_mtx_init(&mm->mtx, "erts_mmap");
+ if (is_first_call) {
+ erts_mtx_init(&am.init_mutex, "mmap_init_atoms");
+ }
#ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION
if (init->virtual_range.start) {
@@ -2155,13 +2165,13 @@ erts_mmap_init(ErtsMMapInit *init)
sz = end - ptr;
start = os_mmap_virtual(ptr, sz);
if (!start || start > ptr || start >= end)
- erl_exit(-1,
+ erts_exit(1,
"erts_mmap: Failed to create virtual range for super carrier\n");
sz = start - ptr;
if (sz)
os_munmap(end, sz);
- mmap_state.reserve_physical = os_reserve_physical;
- mmap_state.unreserve_physical = os_unreserve_physical;
+ mm->reserve_physical = os_reserve_physical;
+ mm->unreserve_physical = os_unreserve_physical;
virtual_map = 1;
}
else
@@ -2179,8 +2189,8 @@ erts_mmap_init(ErtsMMapInit *init)
#ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION
if (!init->scrpm) {
start = os_mmap_virtual(NULL, sz);
- mmap_state.reserve_physical = os_reserve_physical;
- mmap_state.unreserve_physical = os_unreserve_physical;
+ mm->reserve_physical = os_reserve_physical;
+ mm->unreserve_physical = os_unreserve_physical;
virtual_map = 1;
}
else
@@ -2193,7 +2203,7 @@ erts_mmap_init(ErtsMMapInit *init)
start = os_mmap(NULL, sz, 1);
}
if (!start)
- erl_exit(-1,
+ erts_exit(1,
"erts_mmap: Failed to create super carrier of size %bpu MB\n",
init->scs/1024/1024);
end = start + sz;
@@ -2206,34 +2216,32 @@ erts_mmap_init(ErtsMMapInit *init)
}
#endif
}
- if (!mmap_state.no_os_mmap)
- erts_have_erts_mmap |= ERTS_HAVE_ERTS_OS_MMAP;
#endif
- mmap_state.no.free_seg_descs = 0;
- mmap_state.no.free_segs.curr = 0;
- mmap_state.no.free_segs.max = 0;
+ mm->no.free_seg_descs = 0;
+ mm->no.free_segs.curr = 0;
+ mm->no.free_segs.max = 0;
- mmap_state.size.supercarrier.total = 0;
- mmap_state.size.supercarrier.used.total = 0;
- mmap_state.size.supercarrier.used.sa = 0;
- mmap_state.size.supercarrier.used.sua = 0;
- mmap_state.size.os.used = 0;
+ mm->size.supercarrier.total = 0;
+ mm->size.supercarrier.used.total = 0;
+ mm->size.supercarrier.used.sa = 0;
+ mm->size.supercarrier.used.sua = 0;
+ mm->size.os.used = 0;
- mmap_state.desc.new_area_hint = NULL;
+ mm->desc.new_area_hint = NULL;
if (!start) {
- mmap_state.sa.bot = NULL;
- mmap_state.sua.top = NULL;
- mmap_state.sa.bot = NULL;
- mmap_state.sua.top = NULL;
- mmap_state.no_os_mmap = 0;
- mmap_state.supercarrier = 0;
+ mm->sa.bot = NULL;
+ mm->sua.top = NULL;
+ mm->sa.bot = NULL;
+ mm->sua.top = NULL;
+ mm->no_os_mmap = 0;
+ mm->supercarrier = 0;
}
else {
size_t desc_size;
- mmap_state.no_os_mmap = init->sco;
+ mm->no_os_mmap = init->sco;
desc_size = init->scrfsd;
if (desc_size < 100)
@@ -2242,68 +2250,75 @@ erts_mmap_init(ErtsMMapInit *init)
if ((desc_size
+ ERTS_SUPERALIGNED_SIZE
+ ERTS_PAGEALIGNED_SIZE) > end - start)
- erl_exit(-1, "erts_mmap: No space for segments in super carrier\n");
+ erts_exit(1, "erts_mmap: No space for segments in super carrier\n");
- mmap_state.sa.bot = start;
- mmap_state.sa.bot += desc_size;
- mmap_state.sa.bot = (char *) ERTS_SUPERALIGNED_CEILING(mmap_state.sa.bot);
- mmap_state.sa.top = mmap_state.sa.bot;
- mmap_state.sua.top = end;
- mmap_state.sua.bot = mmap_state.sua.top;
+ mm->sa.bot = start;
+ mm->sa.bot += desc_size;
+ mm->sa.bot = (char *) ERTS_SUPERALIGNED_CEILING(mm->sa.bot);
+ mm->sa.top = mm->sa.bot;
+ mm->sua.top = end;
+ mm->sua.bot = mm->sua.top;
- mmap_state.size.supercarrier.used.total += (UWord) (mmap_state.sa.bot - start);
+ mm->size.supercarrier.used.total += (UWord) (mm->sa.bot - start);
- mmap_state.desc.free_list = NULL;
- mmap_state.desc.reserved = 0;
+ mm->desc.free_list = NULL;
+ mm->desc.reserved = 0;
if (end == (void *) 0) {
/*
* Very unlikely, but we need a guarantee
- * that `mmap_state.sua.top` always will
+ * that `mm->sua.top` always will
* compare as larger than all segment pointers
* into the super carrier...
*/
- mmap_state.sua.top -= ERTS_PAGEALIGNED_SIZE;
- mmap_state.size.supercarrier.used.total += ERTS_PAGEALIGNED_SIZE;
+ mm->sua.top -= ERTS_PAGEALIGNED_SIZE;
+ mm->size.supercarrier.used.total += ERTS_PAGEALIGNED_SIZE;
#ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION
- if (!virtual_map || os_reserve_physical(mmap_state.sua.top, ERTS_PAGEALIGNED_SIZE))
+ if (!virtual_map || os_reserve_physical(mm->sua.top, ERTS_PAGEALIGNED_SIZE))
#endif
- add_free_desc_area(mmap_state.sua.top, end);
- mmap_state.desc.reserved += (end - mmap_state.sua.top) / sizeof(ErtsFreeSegDesc);
+ add_free_desc_area(mm, mm->sua.top, end);
+ mm->desc.reserved += (end - mm->sua.top) / sizeof(ErtsFreeSegDesc);
}
- mmap_state.size.supercarrier.total = (UWord) (mmap_state.sua.top - start);
+ mm->size.supercarrier.total = (UWord) (mm->sua.top - start);
/*
* Area before (and after) super carrier
* will be used for free segment descritors.
*/
#ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION
- if (virtual_map && !os_reserve_physical(start, mmap_state.sa.bot - start))
- erl_exit(-1, "erts_mmap: Failed to reserve physical memory for descriptors\n");
+ if (virtual_map && !os_reserve_physical(start, mm->sa.bot - start))
+ erts_exit(1, "erts_mmap: Failed to reserve physical memory for descriptors\n");
#endif
- mmap_state.desc.unused_start = start;
- mmap_state.desc.unused_end = mmap_state.sa.bot;
- mmap_state.desc.reserved += ((mmap_state.desc.unused_end - start)
+ mm->desc.unused_start = start;
+ mm->desc.unused_end = mm->sa.bot;
+ mm->desc.reserved += ((mm->desc.unused_end - start)
/ sizeof(ErtsFreeSegDesc));
- init_free_seg_map(&mmap_state.sa.map, SA_SZ_ADDR_ORDER);
- init_free_seg_map(&mmap_state.sua.map, SZ_REVERSE_ADDR_ORDER);
+ init_free_seg_map(&mm->sa.map, SA_SZ_ADDR_ORDER);
+ init_free_seg_map(&mm->sua.map, SZ_REVERSE_ADDR_ORDER);
- mmap_state.supercarrier = 1;
- erts_have_erts_mmap |= ERTS_HAVE_ERTS_SUPERCARRIER_MMAP;
+ mm->supercarrier = 1;
- mmap_state.desc.new_area_hint = end;
+ mm->desc.new_area_hint = end;
}
#if !ERTS_HAVE_OS_MMAP
- mmap_state.no_os_mmap = 1;
+ mm->no_os_mmap = 1;
#endif
#ifdef HARD_DEBUG_MSEG
hard_dbg_mseg_init();
#endif
+
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ if (mm == &erts_literal_mmapper) {
+ erts_literals_start = erts_literal_mmapper.sa.bot;
+ erts_literals_size = erts_literal_mmapper.sua.top - erts_literals_start;
+ }
+#endif
+ is_first_call = 0;
}
@@ -2313,7 +2328,8 @@ add_2tup(Uint **hpp, Uint *szp, Eterm *lp, Eterm el1, Eterm el2)
*lp = erts_bld_cons(hpp, szp, erts_bld_tuple(hpp, szp, 2, el1, el2), *lp);
}
-Eterm erts_mmap_info(int *print_to_p,
+Eterm erts_mmap_info(ErtsMemMapper* mm,
+ int *print_to_p,
void *print_to_arg,
Eterm** hpp, Uint* szp,
struct erts_mmap_info_struct* emis)
@@ -2328,29 +2344,29 @@ Eterm erts_mmap_info(int *print_to_p,
Eterm res = THE_NON_VALUE;
if (!hpp) {
- erts_smp_mtx_lock(&mmap_state.mtx);
- emis->sizes[0] = mmap_state.size.supercarrier.total;
- emis->sizes[1] = mmap_state.sa.top - mmap_state.sa.bot;
- emis->sizes[2] = mmap_state.sua.top - mmap_state.sua.bot;
- emis->sizes[3] = mmap_state.size.supercarrier.used.total;
- emis->sizes[4] = mmap_state.size.supercarrier.used.sa;
- emis->sizes[5] = mmap_state.size.supercarrier.used.sua;
+ erts_smp_mtx_lock(&mm->mtx);
+ emis->sizes[0] = mm->size.supercarrier.total;
+ emis->sizes[1] = mm->sa.top - mm->sa.bot;
+ emis->sizes[2] = mm->sua.top - mm->sua.bot;
+ emis->sizes[3] = mm->size.supercarrier.used.total;
+ emis->sizes[4] = mm->size.supercarrier.used.sa;
+ emis->sizes[5] = mm->size.supercarrier.used.sua;
- emis->segs[0] = mmap_state.no.free_segs.curr;
- emis->segs[1] = mmap_state.no.free_segs.max;
- emis->segs[2] = mmap_state.no.free_seg_descs;
- emis->segs[3] = mmap_state.desc.reserved;
- emis->segs[4] = mmap_state.sa.map.nseg;
- emis->segs[5] = mmap_state.sua.map.nseg;
+ emis->segs[0] = mm->no.free_segs.curr;
+ emis->segs[1] = mm->no.free_segs.max;
+ emis->segs[2] = mm->no.free_seg_descs;
+ emis->segs[3] = mm->desc.reserved;
+ emis->segs[4] = mm->sa.map.nseg;
+ emis->segs[5] = mm->sua.map.nseg;
- emis->os_used = mmap_state.size.os.used;
- erts_smp_mtx_unlock(&mmap_state.mtx);
+ emis->os_used = mm->size.os.used;
+ erts_smp_mtx_unlock(&mm->mtx);
}
if (print_to_p) {
int to = *print_to_p;
void *arg = print_to_arg;
- if (mmap_state.supercarrier) {
+ if (mm->supercarrier) {
const char* prefix = "supercarrier ";
erts_print(to, arg, "%stotal size: %bpu\n", prefix, emis->sizes[0]);
erts_print(to, arg, "%stotal sa size: %bpu\n", prefix, emis->sizes[1]);
@@ -2365,7 +2381,7 @@ Eterm erts_mmap_info(int *print_to_p,
erts_print(to, arg, "%ssa free segs: %bpu\n", prefix, emis->segs[4]);
erts_print(to, arg, "%ssua free segs: %bpu\n", prefix, emis->segs[5]);
}
- if (!mmap_state.no_os_mmap) {
+ if (!mm->no_os_mmap) {
erts_print(to, arg, "os mmap size used: %bpu\n", emis->os_used);
}
}
@@ -2377,7 +2393,7 @@ Eterm erts_mmap_info(int *print_to_p,
}
lix = 0;
- if (mmap_state.supercarrier) {
+ if (mm->supercarrier) {
group[0] = erts_bld_atom_uword_2tup_list(hpp, szp,
sizeof(size_tags)/sizeof(Eterm),
size_tags, emis->sizes);
@@ -2389,7 +2405,7 @@ Eterm erts_mmap_info(int *print_to_p,
lix++;
}
- if (!mmap_state.no_os_mmap) {
+ if (!mm->no_os_mmap) {
group[0] = erts_bld_atom_uword_2tup_list(hpp, szp,
1, &am.used, &emis->os_used);
list[lix] = erts_bld_2tup_list(hpp, szp, 1, group_tags, group);
@@ -2401,25 +2417,26 @@ Eterm erts_mmap_info(int *print_to_p,
return res;
}
-Eterm erts_mmap_info_options(char *prefix,
+Eterm erts_mmap_info_options(ErtsMemMapper* mm,
+ char *prefix,
int *print_to_p,
void *print_to_arg,
Uint **hpp,
Uint *szp)
{
- const UWord scs = mmap_state.sua.top - mmap_state.sa.bot;
- const Eterm sco = mmap_state.no_os_mmap ? am_true : am_false;
- const Eterm scrpm = (mmap_state.reserve_physical == reserve_noop) ? am_true : am_false;
+ const UWord scs = mm->sua.top - mm->sa.bot;
+ const Eterm sco = mm->no_os_mmap ? am_true : am_false;
+ const Eterm scrpm = (mm->reserve_physical == reserve_noop) ? am_true : am_false;
Eterm res = THE_NON_VALUE;
if (print_to_p) {
int to = *print_to_p;
void *arg = print_to_arg;
erts_print(to, arg, "%sscs: %bpu\n", prefix, scs);
- if (mmap_state.supercarrier) {
+ if (mm->supercarrier) {
erts_print(to, arg, "%ssco: %T\n", prefix, sco);
erts_print(to, arg, "%sscrpm: %T\n", prefix, scrpm);
- erts_print(to, arg, "%sscrfsd: %beu\n", prefix, mmap_state.desc.reserved);
+ erts_print(to, arg, "%sscrfsd: %beu\n", prefix, mm->desc.reserved);
}
}
@@ -2429,9 +2446,9 @@ Eterm erts_mmap_info_options(char *prefix,
}
res = NIL;
- if (mmap_state.supercarrier) {
+ if (mm->supercarrier) {
add_2tup(hpp, szp, &res, am.scrfsd,
- erts_bld_uint(hpp,szp, mmap_state.desc.reserved));
+ erts_bld_uint(hpp,szp, mm->desc.reserved));
add_2tup(hpp, szp, &res, am.scrpm, scrpm);
add_2tup(hpp, szp, &res, am.sco, sco);
}
@@ -2441,9 +2458,9 @@ Eterm erts_mmap_info_options(char *prefix,
}
-Eterm erts_mmap_debug_info(Process* p)
+Eterm erts_mmap_debug_info(ErtsMemMapper* mm, Process* p)
{
- if (mmap_state.supercarrier) {
+ if (mm->supercarrier) {
ERTS_DECL_AM(sabot);
ERTS_DECL_AM(satop);
ERTS_DECL_AM(suabot);
@@ -2453,18 +2470,17 @@ Eterm erts_mmap_debug_info(Process* p)
UWord values[4];
Eterm *hp, *hp_end;
Uint may_need;
- const Uint PTR_BIG_SZ = HALFWORD_HEAP ? 3 : 2;
-
- erts_smp_mtx_lock(&mmap_state.mtx);
- values[0] = (UWord)mmap_state.sa.bot;
- values[1] = (UWord)mmap_state.sa.top;
- values[2] = (UWord)mmap_state.sua.bot;
- values[3] = (UWord)mmap_state.sua.top;
- sa_list = build_free_seg_list(p, &mmap_state.sa.map);
- sua_list = build_free_seg_list(p, &mmap_state.sua.map);
- erts_smp_mtx_unlock(&mmap_state.mtx);
-
- may_need = 4*(2+3+PTR_BIG_SZ) + 2*(2+3);
+
+ erts_smp_mtx_lock(&mm->mtx);
+ values[0] = (UWord)mm->sa.bot;
+ values[1] = (UWord)mm->sa.top;
+ values[2] = (UWord)mm->sua.bot;
+ values[3] = (UWord)mm->sua.top;
+ sa_list = build_free_seg_list(p, &mm->sa.map);
+ sua_list = build_free_seg_list(p, &mm->sua.map);
+ erts_smp_mtx_unlock(&mm->mtx);
+
+ may_need = 4*(2+3+2) + 2*(2+3);
hp = HAlloc(p, may_need);
hp_end = hp + may_need;
diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h
index 66619c5161..67e131b53e 100644
--- a/erts/emulator/sys/common/erl_mmap.h
+++ b/erts/emulator/sys/common/erl_mmap.h
@@ -30,9 +30,6 @@
#define ERTS_MMAPFLG_SUPERCARRIER_ONLY (((Uint32) 1) << 1)
#define ERTS_MMAPFLG_SUPERALIGNED (((Uint32) 1) << 2)
-#define ERTS_HAVE_ERTS_OS_MMAP (1 << 0)
-#define ERTS_HAVE_ERTS_SUPERCARRIER_MMAP (1 << 1)
-extern int erts_have_erts_mmap;
extern UWord erts_page_inv_mask;
typedef struct {
@@ -53,23 +50,31 @@ typedef struct {
#define ERTS_MMAP_INIT_DEFAULT_INITER \
{{NULL, NULL}, {NULL, NULL}, 0, 1, (1 << 16), 1}
-void *erts_mmap(Uint32 flags, UWord *sizep);
-void erts_munmap(Uint32 flags, void *ptr, UWord size);
-void *erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep);
-int erts_mmap_in_supercarrier(void *ptr);
-void erts_mmap_init(ErtsMMapInit*);
+#define ERTS_LITERAL_VIRTUAL_AREA_SIZE (UWORD_CONSTANT(1)*1024*1024*1024)
+
+#define ERTS_MMAP_INIT_LITERAL_INITER \
+ {{NULL, NULL}, {NULL, NULL}, ERTS_LITERAL_VIRTUAL_AREA_SIZE, 1, (1 << 16), 0}
+
+typedef struct ErtsMemMapper_ ErtsMemMapper;
+
+void *erts_mmap(ErtsMemMapper*, Uint32 flags, UWord *sizep);
+void erts_munmap(ErtsMemMapper*, Uint32 flags, void *ptr, UWord size);
+void *erts_mremap(ErtsMemMapper*, Uint32 flags, void *ptr, UWord old_size, UWord *sizep);
+int erts_mmap_in_supercarrier(ErtsMemMapper*, void *ptr);
+void erts_mmap_init(ErtsMemMapper*, ErtsMMapInit*);
struct erts_mmap_info_struct
{
UWord sizes[6];
UWord segs[6];
UWord os_used;
};
-Eterm erts_mmap_info(int *print_to_p, void *print_to_arg,
+Eterm erts_mmap_info(ErtsMemMapper*, int *print_to_p, void *print_to_arg,
Eterm** hpp, Uint* szp, struct erts_mmap_info_struct*);
-Eterm erts_mmap_info_options(char *prefix, int *print_to_p, void *print_to_arg,
+Eterm erts_mmap_info_options(ErtsMemMapper*,
+ char *prefix, int *print_to_p, void *print_to_arg,
Uint **hpp, Uint *szp);
struct process;
-Eterm erts_mmap_debug_info(struct process*);
+Eterm erts_mmap_debug_info(ErtsMemMapper*, struct process*);
#define ERTS_SUPERALIGNED_SIZE \
(1 << ERTS_MMAP_SUPERALIGNED_BITS)
@@ -121,6 +126,11 @@ Eterm erts_mmap_debug_info(struct process*);
# define ERTS_HAVE_OS_MMAP 1
#endif
+extern ErtsMemMapper erts_dflt_mmapper;
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+extern ErtsMemMapper erts_literal_mmapper;
+#endif
+
/*#define HARD_DEBUG_MSEG*/
#ifdef HARD_DEBUG_MSEG
# define HARD_DBG_INSERT_MSEG hard_dbg_insert_mseg
diff --git a/erts/emulator/sys/common/erl_mseg.c b/erts/emulator/sys/common/erl_mseg.c
index 0d51aad863..286130bece 100644
--- a/erts/emulator/sys/common/erl_mseg.c
+++ b/erts/emulator/sys/common/erl_mseg.c
@@ -99,17 +99,12 @@ static const int debruijn[32] = {
static int atoms_initialized;
-typedef struct mem_kind_t MemKind;
-
const ErtsMsegOpt_t erts_mseg_default_opt = {
1, /* Use cache */
1, /* Preserv data */
0, /* Absolute shrink threshold */
0, /* Relative shrink threshold */
0 /* Scheduler specific */
-#if HALFWORD_HEAP
- ,0 /* need low memory */
-#endif
};
@@ -142,7 +137,14 @@ struct cache_t_ {
typedef struct ErtsMsegAllctr_t_ ErtsMsegAllctr_t;
-struct mem_kind_t {
+struct ErtsMsegAllctr_t_ {
+ int ix;
+
+ int is_init_done;
+ int is_thread_safe;
+ erts_mtx_t mtx;
+
+ int is_cache_check_scheduled;
cache_t cache[MAX_CACHE_SIZE];
cache_t cache_unpowered_node;
@@ -168,29 +170,6 @@ struct mem_kind_t {
} max_ever;
} segments;
- ErtsMsegAllctr_t *ma;
- const char* name;
- MemKind* next;
-};/*MemKind*/
-
-struct ErtsMsegAllctr_t_ {
- int ix;
-
- int is_init_done;
- int is_thread_safe;
- erts_mtx_t mtx;
-
- int is_cache_check_scheduled;
-
- MemKind* mk_list;
-
-#if HALFWORD_HEAP
- MemKind low_mem;
- MemKind hi_mem;
-#else
- MemKind the_mem;
-#endif
-
Uint max_cache_size;
Uint abs_max_cache_bad_fit;
Uint rel_max_cache_bad_fit;
@@ -302,22 +281,17 @@ schedule_cache_check(ErtsMsegAllctr_t *ma) {
/* #define ERTS_PRINT_ERTS_MMAP */
static ERTS_INLINE void *
-mseg_create(ErtsMsegAllctr_t *ma, Uint flags, MemKind* mk, UWord *sizep)
+mseg_create(ErtsMsegAllctr_t *ma, Uint flags, UWord *sizep)
{
#ifdef ERTS_PRINT_ERTS_MMAP
UWord req_size = *sizep;
#endif
void *seg;
Uint32 mmap_flags = 0;
-#if HALFWORD_HEAP
- mmap_flags |= ((mk == &ma->low_mem)
- ? ERTS_MMAPFLG_SUPERCARRIER_ONLY
- : ERTS_MMAPFLG_OS_ONLY);
-#endif
if (MSEG_FLG_IS_2POW(flags))
mmap_flags |= ERTS_MMAPFLG_SUPERALIGNED;
- seg = erts_mmap(mmap_flags, sizep);
+ seg = erts_mmap(&erts_dflt_mmapper, mmap_flags, sizep);
#ifdef ERTS_PRINT_ERTS_MMAP
erts_fprintf(stderr, "%p = erts_mmap(%s, {%bpu, %bpu});\n", seg,
@@ -331,18 +305,13 @@ mseg_create(ErtsMsegAllctr_t *ma, Uint flags, MemKind* mk, UWord *sizep)
}
static ERTS_INLINE void
-mseg_destroy(ErtsMsegAllctr_t *ma, Uint flags, MemKind* mk, void *seg_p, UWord size) {
+mseg_destroy(ErtsMsegAllctr_t *ma, Uint flags, void *seg_p, UWord size) {
Uint32 mmap_flags = 0;
-#if HALFWORD_HEAP
- mmap_flags |= ((mk == &ma->low_mem)
- ? ERTS_MMAPFLG_SUPERCARRIER_ONLY
- : ERTS_MMAPFLG_OS_ONLY);
-#endif
if (MSEG_FLG_IS_2POW(flags))
mmap_flags |= ERTS_MMAPFLG_SUPERALIGNED;
- erts_munmap(mmap_flags, seg_p, size);
+ erts_munmap(&erts_dflt_mmapper, mmap_flags, seg_p, size);
#ifdef ERTS_PRINT_ERTS_MMAP
erts_fprintf(stderr, "erts_munmap(%s, %p, %bpu);\n",
(mmap_flags & ERTS_MMAPFLG_SUPERALIGNED) ? "sa" : "sua",
@@ -353,22 +322,17 @@ mseg_destroy(ErtsMsegAllctr_t *ma, Uint flags, MemKind* mk, void *seg_p, UWord s
}
static ERTS_INLINE void *
-mseg_recreate(ErtsMsegAllctr_t *ma, Uint flags, MemKind* mk, void *old_seg, UWord old_size, UWord *sizep)
+mseg_recreate(ErtsMsegAllctr_t *ma, Uint flags, void *old_seg, UWord old_size, UWord *sizep)
{
#ifdef ERTS_PRINT_ERTS_MMAP
UWord req_size = *sizep;
#endif
void *new_seg;
Uint32 mmap_flags = 0;
-#if HALFWORD_HEAP
- mmap_flags |= ((mk == &ma->low_mem)
- ? ERTS_MMAPFLG_SUPERCARRIER_ONLY
- : ERTS_MMAPFLG_OS_ONLY);
-#endif
if (MSEG_FLG_IS_2POW(flags))
mmap_flags |= ERTS_MMAPFLG_SUPERALIGNED;
- new_seg = erts_mremap(mmap_flags, old_seg, old_size, sizep);
+ new_seg = erts_mremap(&erts_dflt_mmapper, mmap_flags, old_seg, old_size, sizep);
#ifdef ERTS_PRINT_ERTS_MMAP
erts_fprintf(stderr, "%p = erts_mremap(%s, %p, %bpu, {%bpu, %bpu});\n",
@@ -392,11 +356,8 @@ do { \
|| erts_smp_thr_progress_is_blocking() \
|| ERTS_IS_CRASH_DUMPING); \
} while (0)
-#define ERTS_DBG_MK_CHK_THR_ACCESS(MK) \
- ERTS_DBG_MA_CHK_THR_ACCESS((MK)->ma)
#else
#define ERTS_DBG_MA_CHK_THR_ACCESS(MA)
-#define ERTS_DBG_MK_CHK_THR_ACCESS(MK)
#endif
/* Cache interface */
@@ -409,10 +370,10 @@ static ERTS_INLINE void mseg_cache_clear_node(cache_t *c) {
c->prev = c;
}
-static ERTS_INLINE int cache_bless_segment(MemKind *mk, void *seg, UWord size, Uint flags) {
+static ERTS_INLINE int cache_bless_segment(ErtsMsegAllctr_t *ma, void *seg, UWord size, Uint flags) {
cache_t *c;
- ERTS_DBG_MK_CHK_THR_ACCESS(mk);
+ ERTS_DBG_MA_CHK_THR_ACCESS(ma);
ASSERT(!MSEG_FLG_IS_2POW(flags) || (MSEG_FLG_IS_2POW(flags) && MAP_IS_ALIGNED(seg) && IS_2POW(size)));
@@ -421,11 +382,11 @@ static ERTS_INLINE int cache_bless_segment(MemKind *mk, void *seg, UWord size, U
* Large blocks has no such cache and it is up to mseg to cache them to speed things up.
*/
- if (!erts_circleq_is_empty(&(mk->cache_free))) {
+ if (!erts_circleq_is_empty(&(ma->cache_free))) {
/* We have free slots, use one to cache the segment */
- c = erts_circleq_head(&(mk->cache_free));
+ c = erts_circleq_head(&(ma->cache_free));
erts_circleq_remove(c);
c->seg = seg;
@@ -437,29 +398,28 @@ static ERTS_INLINE int cache_bless_segment(MemKind *mk, void *seg, UWord size, U
ASSERT(ix < CACHE_AREAS);
ASSERT((1 << (ix + MSEG_ALIGN_BITS)) == size);
- erts_circleq_push_head(&(mk->cache_powered_node[ix]), c);
+ erts_circleq_push_head(&(ma->cache_powered_node[ix]), c);
} else
- erts_circleq_push_head(&(mk->cache_unpowered_node), c);
+ erts_circleq_push_head(&(ma->cache_unpowered_node), c);
- mk->cache_size++;
- ASSERT(mk->cache_size <= mk->ma->max_cache_size);
+ ma->cache_size++;
return 1;
- } else if (!MSEG_FLG_IS_2POW(flags) && !erts_circleq_is_empty(&(mk->cache_unpowered_node))) {
+ } else if (!MSEG_FLG_IS_2POW(flags) && !erts_circleq_is_empty(&(ma->cache_unpowered_node))) {
/* No free slots.
* Evict oldest slot from unpowered cache so we can cache an unpowered (sbc) segment */
- c = erts_circleq_tail(&(mk->cache_unpowered_node));
+ c = erts_circleq_tail(&(ma->cache_unpowered_node));
erts_circleq_remove(c);
- mseg_destroy(mk->ma, ERTS_MSEG_FLG_NONE, mk, c->seg, c->size);
+ mseg_destroy(ma, ERTS_MSEG_FLG_NONE, c->seg, c->size);
mseg_cache_clear_node(c);
c->seg = seg;
c->size = size;
- erts_circleq_push_head(&(mk->cache_unpowered_node), c);
+ erts_circleq_push_head(&(ma->cache_unpowered_node), c);
return 1;
} else if (!MSEG_FLG_IS_2POW(flags)) {
@@ -473,20 +433,20 @@ static ERTS_INLINE int cache_bless_segment(MemKind *mk, void *seg, UWord size, U
int i;
for( i = 0; i < CACHE_AREAS; i++) {
- if (erts_circleq_is_empty(&(mk->cache_powered_node[i])))
+ if (erts_circleq_is_empty(&(ma->cache_powered_node[i])))
continue;
- c = erts_circleq_tail(&(mk->cache_powered_node[i]));
+ c = erts_circleq_tail(&(ma->cache_powered_node[i]));
erts_circleq_remove(c);
- mseg_destroy(mk->ma, ERTS_MSEG_FLG_2POW, mk, c->seg, c->size);
+ mseg_destroy(ma, ERTS_MSEG_FLG_2POW, c->seg, c->size);
mseg_cache_clear_node(c);
c->seg = seg;
c->size = size;
- erts_circleq_push_head(&(mk->cache_unpowered_node), c);
+ erts_circleq_push_head(&(ma->cache_unpowered_node), c);
return 1;
}
@@ -495,11 +455,11 @@ static ERTS_INLINE int cache_bless_segment(MemKind *mk, void *seg, UWord size, U
return 0;
}
-static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flags) {
+static ERTS_INLINE void *cache_get_segment(ErtsMsegAllctr_t *ma, UWord *size_p, Uint flags) {
UWord size = *size_p;
- ERTS_DBG_MK_CHK_THR_ACCESS(mk);
+ ERTS_DBG_MA_CHK_THR_ACCESS(ma);
if (MSEG_FLG_IS_2POW(flags)) {
@@ -512,10 +472,10 @@ static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flag
for( i = ix; i < CACHE_AREAS; i++) {
- if (erts_circleq_is_empty(&(mk->cache_powered_node[i])))
+ if (erts_circleq_is_empty(&(ma->cache_powered_node[i])))
continue;
- c = erts_circleq_head(&(mk->cache_powered_node[i]));
+ c = erts_circleq_head(&(ma->cache_powered_node[i]));
erts_circleq_remove(c);
ASSERT(IS_2POW(c->size));
@@ -524,31 +484,31 @@ static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flag
csize = c->size;
seg = (char*) c->seg;
- mk->cache_size--;
- mk->cache_hits++;
+ ma->cache_size--;
+ ma->cache_hits++;
/* link to free cache list */
mseg_cache_clear_node(c);
- erts_circleq_push_head(&(mk->cache_free), c);
+ erts_circleq_push_head(&(ma->cache_free), c);
- ASSERT(!(mk->cache_size < 0));
+ ASSERT(!(ma->cache_size < 0));
if (csize != size)
- mseg_destroy(mk->ma, ERTS_MSEG_FLG_2POW, mk, seg + size, csize - size);
+ mseg_destroy(ma, ERTS_MSEG_FLG_2POW, seg + size, csize - size);
return seg;
}
}
- else if (!erts_circleq_is_empty(&(mk->cache_unpowered_node))) {
+ else if (!erts_circleq_is_empty(&(ma->cache_unpowered_node))) {
void *seg;
cache_t *c;
cache_t *best = NULL;
UWord bdiff = 0;
UWord csize;
- UWord bad_max_abs = mk->ma->abs_max_cache_bad_fit;
- UWord bad_max_rel = mk->ma->rel_max_cache_bad_fit;
+ UWord bad_max_abs = ma->abs_max_cache_bad_fit;
+ UWord bad_max_rel = ma->rel_max_cache_bad_fit;
- erts_circleq_foreach(c, &(mk->cache_unpowered_node)) {
+ erts_circleq_foreach(c, &(ma->cache_unpowered_node)) {
csize = c->size;
if (csize >= size) {
if (((csize - size)*100 < bad_max_rel*size) && (csize - size) < bad_max_abs ) {
@@ -557,11 +517,11 @@ static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flag
erts_circleq_remove(c);
- mk->cache_size--;
- mk->cache_hits++;
+ ma->cache_size--;
+ ma->cache_hits++;
mseg_cache_clear_node(c);
- erts_circleq_push_head(&(mk->cache_free), c);
+ erts_circleq_push_head(&(ma->cache_free), c);
*size_p = csize;
@@ -584,7 +544,7 @@ static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flag
ASSERT(best->seg);
ASSERT(best->size > 0);
- mk->cache_hits++;
+ ma->cache_hits++;
/* Use current cache placement for remaining segment space */
@@ -608,7 +568,7 @@ static ERTS_INLINE void *cache_get_segment(MemKind *mk, UWord *size_p, Uint flag
* using callbacks from aux-work in the scheduler.
*/
-static ERTS_INLINE Uint mseg_drop_one_memkind_cache_size(MemKind *mk, Uint flags, cache_t *head) {
+static ERTS_INLINE Uint mseg_drop_one_cache_size(ErtsMsegAllctr_t *ma, Uint flags, cache_t *head) {
cache_t *c = NULL;
c = erts_circleq_tail(head);
@@ -617,19 +577,19 @@ static ERTS_INLINE Uint mseg_drop_one_memkind_cache_size(MemKind *mk, Uint flags
if (erts_mtrace_enabled)
erts_mtrace_crr_free(SEGTYPE, SEGTYPE, c->seg);
- mseg_destroy(mk->ma, flags, mk, c->seg, c->size);
+ mseg_destroy(ma, flags, c->seg, c->size);
mseg_cache_clear_node(c);
- erts_circleq_push_head(&(mk->cache_free), c);
+ erts_circleq_push_head(&(ma->cache_free), c);
- mk->segments.current.watermark--;
- mk->cache_size--;
+ ma->segments.current.watermark--;
+ ma->cache_size--;
- ASSERT( mk->cache_size >= 0 );
+ ASSERT(ma->cache_size >= 0);
- return mk->cache_size;
+ return ma->cache_size;
}
-static ERTS_INLINE Uint mseg_drop_memkind_cache_size(MemKind *mk, Uint flags, cache_t *head) {
+static ERTS_INLINE Uint mseg_drop_cache_size(ErtsMsegAllctr_t *ma, Uint flags, cache_t *head) {
cache_t *c = NULL;
while (!erts_circleq_is_empty(head)) {
@@ -640,58 +600,52 @@ static ERTS_INLINE Uint mseg_drop_memkind_cache_size(MemKind *mk, Uint flags, ca
if (erts_mtrace_enabled)
erts_mtrace_crr_free(SEGTYPE, SEGTYPE, c->seg);
- mseg_destroy(mk->ma, flags, mk, c->seg, c->size);
+ mseg_destroy(ma, flags, c->seg, c->size);
mseg_cache_clear_node(c);
- erts_circleq_push_head(&(mk->cache_free), c);
-
- mk->segments.current.watermark--;
- mk->cache_size--;
+ erts_circleq_push_head(&(ma->cache_free), c);
+ ma->segments.current.watermark--;
+ ma->cache_size--;
}
- ASSERT( mk->cache_size >= 0 );
+ ASSERT(ma->cache_size >= 0);
- return mk->cache_size;
+ return ma->cache_size;
}
-/* mseg_check_memkind_cache
- * - Check if we can empty some cached segments in this
- * MemKind.
+/* mseg_check_cache
+ * - Check if we can empty some cached segments in this allocator
*/
-static Uint mseg_check_memkind_cache(MemKind *mk) {
+static Uint mseg_check_cache(ErtsMsegAllctr_t *ma) {
int i;
- ERTS_DBG_MK_CHK_THR_ACCESS(mk);
+ ERTS_DBG_MA_CHK_THR_ACCESS(ma);
for (i = 0; i < CACHE_AREAS; i++) {
- if (!erts_circleq_is_empty(&(mk->cache_powered_node[i])))
- return mseg_drop_one_memkind_cache_size(mk, ERTS_MSEG_FLG_2POW, &(mk->cache_powered_node[i]));
+ if (!erts_circleq_is_empty(&(ma->cache_powered_node[i])))
+ return mseg_drop_one_cache_size(ma, ERTS_MSEG_FLG_2POW, &(ma->cache_powered_node[i]));
}
- if (!erts_circleq_is_empty(&(mk->cache_unpowered_node)))
- return mseg_drop_one_memkind_cache_size(mk, ERTS_MSEG_FLG_NONE, &(mk->cache_unpowered_node));
+ if (!erts_circleq_is_empty(&(ma->cache_unpowered_node)))
+ return mseg_drop_one_cache_size(ma, ERTS_MSEG_FLG_NONE, &(ma->cache_unpowered_node));
return 0;
}
/* mseg_cache_check
* - Check if we have some cache we can purge
- * in any of the memkinds.
*/
static void mseg_cache_check(ErtsMsegAllctr_t *ma) {
- MemKind* mk;
Uint empty_cache = 1;
ERTS_MSEG_LOCK(ma);
- for (mk = ma->mk_list; mk; mk = mk->next) {
- if (mseg_check_memkind_cache(mk))
- empty_cache = 0;
- }
+ if (mseg_check_cache(ma))
+ empty_cache = 0;
/* If all MemKinds caches are empty,
* remove aux-work callback
@@ -709,7 +663,7 @@ static void mseg_cache_check(ErtsMsegAllctr_t *ma) {
/* erts_mseg_cache_check
* - This is a callback that is scheduled as aux-work from
* schedulers and is called at some interval if we have a cache
- * on this mseg-allocator and memkind.
+ * on this mseg-allocator.
* - Purpose: Empty cache slowly so we don't collect mapped areas
* and bloat memory.
*/
@@ -719,42 +673,32 @@ void erts_mseg_cache_check(void) {
}
-/* *_mseg_clear_*_cache
+/* mseg_clear_cache
* Remove cached segments from the allocator completely
*/
-static void mseg_clear_memkind_cache(MemKind *mk) {
+
+static void mseg_clear_cache(ErtsMsegAllctr_t *ma) {
int i;
+ ERTS_MSEG_LOCK(ma);
+ ERTS_DBG_MA_CHK_THR_ACCESS(ma);
/* drop pow2 caches */
for (i = 0; i < CACHE_AREAS; i++) {
- if (erts_circleq_is_empty(&(mk->cache_powered_node[i])))
+ if (erts_circleq_is_empty(&(ma->cache_powered_node[i])))
continue;
- mseg_drop_memkind_cache_size(mk, ERTS_MSEG_FLG_2POW, &(mk->cache_powered_node[i]));
- ASSERT(erts_circleq_is_empty(&(mk->cache_powered_node[i])));
+ mseg_drop_cache_size(ma, ERTS_MSEG_FLG_2POW, &(ma->cache_powered_node[i]));
+ ASSERT(erts_circleq_is_empty(&(ma->cache_powered_node[i])));
}
/* drop varied caches */
- if (!erts_circleq_is_empty(&(mk->cache_unpowered_node)))
- mseg_drop_memkind_cache_size(mk, ERTS_MSEG_FLG_NONE, &(mk->cache_unpowered_node));
-
- ASSERT(erts_circleq_is_empty(&(mk->cache_unpowered_node)));
- ASSERT(mk->cache_size == 0);
-}
+ if (!erts_circleq_is_empty(&(ma->cache_unpowered_node)))
+ mseg_drop_cache_size(ma, ERTS_MSEG_FLG_NONE, &(ma->cache_unpowered_node));
-static void mseg_clear_cache(ErtsMsegAllctr_t *ma) {
- MemKind* mk;
-
- ERTS_MSEG_LOCK(ma);
- ERTS_DBG_MA_CHK_THR_ACCESS(ma);
-
-
- for (mk = ma->mk_list; mk; mk = mk->next) {
- mseg_clear_memkind_cache(mk);
- }
+ ASSERT(erts_circleq_is_empty(&(ma->cache_unpowered_node)));
+ ASSERT(ma->cache_size == 0);
INC_CC(ma, clear_cache);
-
ERTS_MSEG_UNLOCK(ma);
}
@@ -763,25 +707,12 @@ void erts_mseg_clear_cache(void) {
mseg_clear_cache(ERTS_MSEG_ALLCTR_IX(0));
}
-
-
-static ERTS_INLINE MemKind* memkind(ErtsMsegAllctr_t *ma,
- const ErtsMsegOpt_t *opt)
-{
-#if HALFWORD_HEAP
- return opt->low_mem ? &ma->low_mem : &ma->hi_mem;
-#else
- return &ma->the_mem;
-#endif
-}
-
static void *
mseg_alloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, UWord *size_p,
Uint flags, const ErtsMsegOpt_t *opt)
{
UWord size;
void *seg;
- MemKind* mk = memkind(ma, opt);
INC_CC(ma, alloc);
@@ -795,10 +726,10 @@ mseg_alloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, UWord *size_p,
}
}
- if (opt->cache && mk->cache_size > 0 && (seg = cache_get_segment(mk, &size, flags)) != NULL)
+ if (opt->cache && ma->cache_size > 0 && (seg = cache_get_segment(ma, &size, flags)) != NULL)
goto done;
- seg = mseg_create(ma, flags, mk, &size);
+ seg = mseg_create(ma, flags, &size);
if (!seg)
*size_p = 0;
@@ -808,7 +739,7 @@ done:
if (erts_mtrace_enabled)
erts_mtrace_crr_alloc(seg, atype, ERTS_MTRACE_SEGMENT_ID, size);
- ERTS_MSEG_ALLOC_STAT(mk,size);
+ ERTS_MSEG_ALLOC_STAT(ma,size);
}
return seg;
@@ -819,11 +750,9 @@ static void
mseg_dealloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg, UWord size,
Uint flags, const ErtsMsegOpt_t *opt)
{
- MemKind* mk = memkind(ma, opt);
-
- ERTS_MSEG_DEALLOC_STAT(mk,size);
+ ERTS_MSEG_DEALLOC_STAT(ma,size);
- if (opt->cache && cache_bless_segment(mk, seg, size, flags)) {
+ if (opt->cache && cache_bless_segment(ma, seg, size, flags)) {
schedule_cache_check(ma);
goto done;
}
@@ -831,7 +760,7 @@ mseg_dealloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg, UWord size,
if (erts_mtrace_enabled)
erts_mtrace_crr_free(atype, SEGTYPE, seg);
- mseg_destroy(ma, flags, mk, seg, size);
+ mseg_destroy(ma, flags, seg, size);
done:
@@ -842,7 +771,6 @@ static void *
mseg_realloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg,
UWord old_size, UWord *new_size_p, Uint flags, const ErtsMsegOpt_t *opt)
{
- MemKind* mk;
void *new_seg;
UWord new_size;
@@ -861,7 +789,6 @@ mseg_realloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg,
return NULL;
}
- mk = memkind(ma, opt);
new_seg = seg;
if (!MSEG_FLG_IS_2POW(flags))
@@ -876,7 +803,7 @@ mseg_realloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg,
if (new_size > old_size) {
if (opt->preserv) {
- new_seg = mseg_recreate(ma, flags, mk, (void *) seg, old_size, &new_size);
+ new_seg = mseg_recreate(ma, flags, (void *) seg, old_size, &new_size);
if (!new_seg)
new_size = old_size;
}
@@ -896,7 +823,7 @@ mseg_realloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg,
new_size = old_size;
}
else {
- new_seg = mseg_recreate(ma, flags, mk, (void *) seg, old_size, &new_size);
+ new_seg = mseg_recreate(ma, flags, (void *) seg, old_size, &new_size);
if (!new_seg)
new_size = old_size;
}
@@ -910,7 +837,7 @@ mseg_realloc(ErtsMsegAllctr_t *ma, ErtsAlcType_t atype, void *seg,
ASSERT(!MSEG_FLG_IS_2POW(flags) || IS_2POW(new_size));
*new_size_p = new_size;
- ERTS_MSEG_REALLOC_STAT(mk, old_size, new_size);
+ ERTS_MSEG_REALLOC_STAT(ma, old_size, new_size);
return new_seg;
}
@@ -1070,7 +997,8 @@ info_options(ErtsMsegAllctr_t *ma,
{
Eterm res;
- res = erts_mmap_info_options(prefix, print_to_p, print_to_arg, hpp, szp);
+ res = erts_mmap_info_options(&erts_dflt_mmapper,
+ prefix, print_to_p, print_to_arg, hpp, szp);
if (print_to_p) {
int to = *print_to_p;
@@ -1180,63 +1108,63 @@ info_calls(ErtsMsegAllctr_t *ma, int *print_to_p, void *print_to_arg, Uint **hpp
}
static Eterm
-info_status(ErtsMsegAllctr_t *ma, MemKind* mk, int *print_to_p, void *print_to_arg,
+info_status(ErtsMsegAllctr_t *ma, int *print_to_p, void *print_to_arg,
int begin_new_max_period, Uint **hpp, Uint *szp)
{
Eterm res = THE_NON_VALUE;
- if (mk->segments.max_ever.no < mk->segments.max.no)
- mk->segments.max_ever.no = mk->segments.max.no;
- if (mk->segments.max_ever.sz < mk->segments.max.sz)
- mk->segments.max_ever.sz = mk->segments.max.sz;
+ if (ma->segments.max_ever.no < ma->segments.max.no)
+ ma->segments.max_ever.no = ma->segments.max.no;
+ if (ma->segments.max_ever.sz < ma->segments.max.sz)
+ ma->segments.max_ever.sz = ma->segments.max.sz;
if (print_to_p) {
int to = *print_to_p;
void *arg = print_to_arg;
- erts_print(to, arg, "cached_segments: %beu\n", mk->cache_size);
- erts_print(to, arg, "cache_hits: %beu\n", mk->cache_hits);
+ erts_print(to, arg, "cached_segments: %beu\n", ma->cache_size);
+ erts_print(to, arg, "cache_hits: %beu\n", ma->cache_hits);
erts_print(to, arg, "segments: %beu %beu %beu\n",
- mk->segments.current.no, mk->segments.max.no, mk->segments.max_ever.no);
+ ma->segments.current.no, ma->segments.max.no, ma->segments.max_ever.no);
erts_print(to, arg, "segments_size: %beu %beu %beu\n",
- mk->segments.current.sz, mk->segments.max.sz, mk->segments.max_ever.sz);
+ ma->segments.current.sz, ma->segments.max.sz, ma->segments.max_ever.sz);
erts_print(to, arg, "segments_watermark: %beu\n",
- mk->segments.current.watermark);
+ ma->segments.current.watermark);
}
if (hpp || szp) {
res = NIL;
add_2tup(hpp, szp, &res,
am.segments_watermark,
- bld_unstable_uint(hpp, szp, mk->segments.current.watermark));
+ bld_unstable_uint(hpp, szp, ma->segments.current.watermark));
add_4tup(hpp, szp, &res,
am.segments_size,
- bld_unstable_uint(hpp, szp, mk->segments.current.sz),
- bld_unstable_uint(hpp, szp, mk->segments.max.sz),
- bld_unstable_uint(hpp, szp, mk->segments.max_ever.sz));
+ bld_unstable_uint(hpp, szp, ma->segments.current.sz),
+ bld_unstable_uint(hpp, szp, ma->segments.max.sz),
+ bld_unstable_uint(hpp, szp, ma->segments.max_ever.sz));
add_4tup(hpp, szp, &res,
am.segments,
- bld_unstable_uint(hpp, szp, mk->segments.current.no),
- bld_unstable_uint(hpp, szp, mk->segments.max.no),
- bld_unstable_uint(hpp, szp, mk->segments.max_ever.no));
+ bld_unstable_uint(hpp, szp, ma->segments.current.no),
+ bld_unstable_uint(hpp, szp, ma->segments.max.no),
+ bld_unstable_uint(hpp, szp, ma->segments.max_ever.no));
add_2tup(hpp, szp, &res,
am.cache_hits,
- bld_unstable_uint(hpp, szp, mk->cache_hits));
+ bld_unstable_uint(hpp, szp, ma->cache_hits));
add_2tup(hpp, szp, &res,
am.cached_segments,
- bld_unstable_uint(hpp, szp, mk->cache_size));
+ bld_unstable_uint(hpp, szp, ma->cache_size));
}
if (begin_new_max_period) {
- mk->segments.max.no = mk->segments.current.no;
- mk->segments.max.sz = mk->segments.current.sz;
+ ma->segments.max.no = ma->segments.current.no;
+ ma->segments.max.sz = ma->segments.current.sz;
}
return res;
}
-static Eterm info_memkind(ErtsMsegAllctr_t *ma, MemKind* mk, int *print_to_p, void *print_to_arg,
+static Eterm info_memkind(ErtsMsegAllctr_t *ma, int *print_to_p, void *print_to_arg,
int begin_max_per, Uint **hpp, Uint *szp)
{
Eterm res = THE_NON_VALUE;
@@ -1244,15 +1172,15 @@ static Eterm info_memkind(ErtsMsegAllctr_t *ma, MemKind* mk, int *print_to_p, vo
Eterm values[3];
if (print_to_p) {
- erts_print(*print_to_p, print_to_arg, "memory kind: %s\n", mk->name);
+ erts_print(*print_to_p, print_to_arg, "memory kind: %s\n", "all memory");
}
if (hpp || szp) {
atoms[0] = am.name;
atoms[1] = am.status;
atoms[2] = am.calls;
- values[0] = erts_bld_string(hpp, szp, mk->name);
+ values[0] = erts_bld_string(hpp, szp, "all memory");
}
- values[1] = info_status(ma, mk, print_to_p, print_to_arg, begin_max_per, hpp, szp);
+ values[1] = info_status(ma, print_to_p, print_to_arg, begin_max_per, hpp, szp);
values[2] = info_calls(ma, print_to_p, print_to_arg, hpp, szp);
if (hpp || szp)
@@ -1261,7 +1189,6 @@ static Eterm info_memkind(ErtsMsegAllctr_t *ma, MemKind* mk, int *print_to_p, vo
return res;
}
-
static Eterm
info_version(ErtsMsegAllctr_t *ma, int *print_to_p, void *print_to_arg, Uint **hpp, Uint *szp)
{
@@ -1326,12 +1253,7 @@ erts_mseg_info(int ix,
ERTS_MSEG_LOCK(ma);
ERTS_DBG_MA_CHK_THR_ACCESS(ma);
-#if HALFWORD_HEAP
- values[n++] = info_memkind(ma, &ma->low_mem, print_to_p, print_to_arg, begin_max_per, hpp, szp);
- values[n++] = info_memkind(ma, &ma->hi_mem, print_to_p, print_to_arg, begin_max_per, hpp, szp);
-#else
- values[n++] = info_memkind(ma, &ma->the_mem, print_to_p, print_to_arg, begin_max_per, hpp, szp);
-#endif
+ values[n++] = info_memkind(ma, print_to_p, print_to_arg, begin_max_per, hpp, szp);
if (hpp || szp)
res = bld_2tup_list(hpp, szp, n, atoms, values);
@@ -1408,13 +1330,10 @@ Uint
erts_mseg_no(const ErtsMsegOpt_t *opt)
{
ErtsMsegAllctr_t *ma = ERTS_MSEG_ALLCTR_OPT(opt);
- MemKind* mk;
- Uint n = 0;
+ Uint n;
ERTS_MSEG_LOCK(ma);
ERTS_DBG_MA_CHK_THR_ACCESS(ma);
- for (mk=ma->mk_list; mk; mk=mk->next) {
- n += mk->segments.current.no;
- }
+ n = ma->segments.current.no;
ERTS_MSEG_UNLOCK(ma);
return n;
}
@@ -1426,16 +1345,16 @@ erts_mseg_unit_size(void)
}
-static void mem_kind_init(ErtsMsegAllctr_t *ma, MemKind* mk, const char* name)
+static void mem_cache_init(ErtsMsegAllctr_t *ma)
{
int i;
/* Clear all cache headers */
- mseg_cache_clear_node(&(mk->cache_free));
- mseg_cache_clear_node(&(mk->cache_unpowered_node));
+ mseg_cache_clear_node(&(ma->cache_free));
+ mseg_cache_clear_node(&(ma->cache_unpowered_node));
for (i = 0; i < CACHE_AREAS; i++) {
- mseg_cache_clear_node(&(mk->cache_powered_node[i]));
+ mseg_cache_clear_node(&(ma->cache_powered_node[i]));
}
/* Populate cache free list */
@@ -1443,25 +1362,20 @@ static void mem_kind_init(ErtsMsegAllctr_t *ma, MemKind* mk, const char* name)
ASSERT(ma->max_cache_size <= MAX_CACHE_SIZE);
for (i = 0; i < ma->max_cache_size; i++) {
- mseg_cache_clear_node(&(mk->cache[i]));
- erts_circleq_push_head(&(mk->cache_free), &(mk->cache[i]));
+ mseg_cache_clear_node(&(ma->cache[i]));
+ erts_circleq_push_head(&(ma->cache_free), &(ma->cache[i]));
}
- mk->cache_size = 0;
- mk->cache_hits = 0;
-
- mk->segments.current.watermark = 0;
- mk->segments.current.no = 0;
- mk->segments.current.sz = 0;
- mk->segments.max.no = 0;
- mk->segments.max.sz = 0;
- mk->segments.max_ever.no = 0;
- mk->segments.max_ever.sz = 0;
-
- mk->ma = ma;
- mk->name = name;
- mk->next = ma->mk_list;
- ma->mk_list = mk;
+ ma->cache_size = 0;
+ ma->cache_hits = 0;
+
+ ma->segments.current.watermark = 0;
+ ma->segments.current.no = 0;
+ ma->segments.current.sz = 0;
+ ma->segments.max.no = 0;
+ ma->segments.max.sz = 0;
+ ma->segments.max_ever.no = 0;
+ ma->segments.max_ever.sz = 0;
}
void
@@ -1488,19 +1402,13 @@ erts_mseg_init(ErtsMsegInit_t *init)
erts_mtx_init(&init_atoms_mutex, "mseg_init_atoms");
-#if HALFWORD_HEAP
- if (sizeof(void *) != 8)
- erl_exit(-1,"Halfword emulator cannot be run in 32bit mode");
-
- init->mmap.virtual_range.start = (char *) sbrk(0);
- init->mmap.virtual_range.end = (char *) 0x100000000UL;
- init->mmap.sco = 0;
+ erts_mmap_init(&erts_dflt_mmapper, &init->dflt_mmap);
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ erts_mmap_init(&erts_literal_mmapper, &init->literal_mmap);
#endif
- erts_mmap_init(&init->mmap);
-
if (!IS_2POW(GET_PAGE_SIZE))
- erl_exit(ERTS_ABORT_EXIT, "erts_mseg: Unexpected page_size %beu\n", GET_PAGE_SIZE);
+ erts_exit(ERTS_ABORT_EXIT, "erts_mseg: Unexpected page_size %beu\n", GET_PAGE_SIZE);
ASSERT((MSEG_ALIGNED_SIZE % GET_PAGE_SIZE) == 0);
@@ -1529,14 +1437,7 @@ erts_mseg_init(ErtsMsegInit_t *init)
if (ma->max_cache_size > MAX_CACHE_SIZE)
ma->max_cache_size = MAX_CACHE_SIZE;
- ma->mk_list = NULL;
-
-#if HALFWORD_HEAP
- mem_kind_init(ma, &ma->low_mem, "low memory");
- mem_kind_init(ma, &ma->hi_mem, "high memory");
-#else
- mem_kind_init(ma, &ma->the_mem, "all memory");
-#endif
+ mem_cache_init(ma);
sys_memzero((void *) &ma->calls, sizeof(ErtsMsegCalls));
}
@@ -1545,13 +1446,8 @@ erts_mseg_init(ErtsMsegInit_t *init)
static ERTS_INLINE Uint tot_cache_size(ErtsMsegAllctr_t *ma)
{
- MemKind* mk;
- Uint sz = 0;
ERTS_DBG_MA_CHK_THR_ACCESS(ma);
- for (mk=ma->mk_list; mk; mk=mk->next) {
- sz += mk->cache_size;
- }
- return sz;
+ return ma->cache_size;
}
/*
diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h
index ba04e919fc..2acd8f8505 100644
--- a/erts/emulator/sys/common/erl_mseg.h
+++ b/erts/emulator/sys/common/erl_mseg.h
@@ -42,16 +42,6 @@
#if ERTS_HAVE_MSEG_SUPER_ALIGNED
# define MSEG_ALIGN_BITS ERTS_MMAP_SUPERALIGNED_BITS
-#else
-/* If we don't use super aligned multiblock carriers
- * we will mmap with page size alignment (and thus use corresponding
- * align bits).
- *
- * Current implementation needs this to be a constant and
- * only uses this for user dev testing so setting page size
- * to 4096 (12 bits) is fine.
- */
-# define MSEG_ALIGN_BITS (12)
#endif
#if HAVE_ERTS_MSEG
@@ -69,7 +59,8 @@ typedef struct {
Uint rmcbf;
Uint mcs;
Uint nos;
- ErtsMMapInit mmap;
+ ErtsMMapInit dflt_mmap;
+ ErtsMMapInit literal_mmap;
} ErtsMsegInit_t;
#define ERTS_MSEG_INIT_DEFAULT_INITIALIZER \
@@ -78,7 +69,8 @@ typedef struct {
20, /* rmcbf: Relative max cache bad fit */ \
10, /* mcs: Max cache size */ \
1000, /* cci: Cache check interval */ \
- ERTS_MMAP_INIT_DEFAULT_INITER \
+ ERTS_MMAP_INIT_DEFAULT_INITER, \
+ ERTS_MMAP_INIT_LITERAL_INITER \
}
typedef struct {
@@ -87,9 +79,6 @@ typedef struct {
UWord abs_shrink_th;
UWord rel_shrink_th;
int sched_spec;
-#if HALFWORD_HEAP
- int low_mem;
-#endif
} ErtsMsegOpt_t;
extern const ErtsMsegOpt_t erts_mseg_default_opt;
diff --git a/erts/emulator/sys/common/erl_os_monotonic_time_extender.c b/erts/emulator/sys/common/erl_os_monotonic_time_extender.c
index b79485241f..367b22d989 100644
--- a/erts/emulator/sys/common/erl_os_monotonic_time_extender.c
+++ b/erts/emulator/sys/common/erl_os_monotonic_time_extender.c
@@ -44,7 +44,7 @@ static void *os_monotonic_time_extender(void *vstatep)
erts_milli_sleep(sleep_time);
}
- erl_exit(ERTS_ABORT_EXIT, "os_monotonic_time_extender thread terminating");
+ erts_exit(ERTS_ABORT_EXIT, "os_monotonic_time_extender thread terminating");
return NULL;
}
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index 21fa214364..36ee94111c 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -74,6 +74,7 @@
#include "erl_thr_progress.h"
#include "erl_driver.h"
#include "erl_alloc.h"
+#include "erl_msacc.h"
#if !defined(ERTS_POLL_USE_EPOLL) \
&& !defined(ERTS_POLL_USE_DEVPOLL) \
@@ -2238,6 +2239,7 @@ static ERTS_INLINE int
check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
{
int res;
+ ERTS_MSACC_PUSH_STATE_M();
if (erts_smp_atomic_read_nob(&ps->no_of_user_fds) == 0
&& timeout_time == ERTS_POLL_NO_TIMEOUT) {
/* Nothing to poll and zero timeout; done... */
@@ -2259,6 +2261,7 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
#ifdef ERTS_SMP
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
timerfd_set(ps, &its);
res = epoll_wait(ps->kp_fd, ps->res_events, max_res, -1);
res = timerfd_clear(ps, res, max_res);
@@ -2268,10 +2271,12 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
}
#else /* !ERTS_POLL_USE_TIMERFD */
timeout = (int) get_timeout(ps, 1000, timeout_time);
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
res = epoll_wait(ps->kp_fd, ps->res_events, max_res, timeout);
#endif /* !ERTS_POLL_USE_TIMERFD */
#elif ERTS_POLL_USE_KQUEUE /* --- kqueue ------------------------------ */
@@ -2279,10 +2284,12 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
if (max_res > ps->res_events_len)
grow_res_events(ps, max_res);
timeout = get_timeout_timespec(ps, &ts, timeout_time);
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
res = kevent(ps->kp_fd, NULL, 0, ps->res_events, max_res, &ts);
#endif /* ----------------------------------------- */
}
@@ -2306,26 +2313,33 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
if (poll_res.dp_nfds > ps->res_events_len)
grow_res_events(ps, poll_res.dp_nfds);
poll_res.dp_fds = ps->res_events;
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
poll_res.dp_timeout = timeout;
res = ioctl(ps->kp_fd, DP_POLL, &poll_res);
#elif ERTS_POLL_USE_POLL && defined(HAVE_PPOLL) /* --- ppoll ---------------- */
struct timespec ts;
timeout = get_timeout_timespec(ps, &ts, timeout_time);
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
res = ppoll(ps->poll_fds, ps->no_poll_fds, &ts, NULL);
#elif ERTS_POLL_USE_POLL /* --- poll --------------------------------- */
timeout = (int) get_timeout(ps, 1000, timeout_time);
+
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
res = poll(ps->poll_fds, ps->no_poll_fds, timeout);
#elif ERTS_POLL_USE_SELECT /* --- select ------------------------------ */
SysTimeval to;
@@ -2334,18 +2348,22 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
ERTS_FD_COPY(&ps->input_fds, &ps->res_input_fds);
ERTS_FD_COPY(&ps->output_fds, &ps->res_output_fds);
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+ }
res = ERTS_SELECT(ps->max_fd + 1,
&ps->res_input_fds,
&ps->res_output_fds,
NULL,
&to);
#ifdef ERTS_SMP
- if (timeout)
+ if (timeout) {
erts_thr_progress_finalize_wait(NULL);
+ ERTS_MSACC_POP_STATE_M();
+ }
if (res < 0
&& errno == EBADF
&& ERTS_POLLSET_HAVE_UPDATE_REQUESTS(ps)) {
@@ -2380,10 +2398,12 @@ check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
return res;
#endif /* ----------------------------------------- */
}
+ if (timeout) {
#ifdef ERTS_SMP
- if (timeout)
erts_thr_progress_finalize_wait(NULL);
#endif
+ ERTS_MSACC_POP_STATE_M();
+ }
return res;
}
}
diff --git a/erts/emulator/sys/common/erl_poll.h b/erts/emulator/sys/common/erl_poll.h
index 19ce582154..bc2c681876 100644
--- a/erts/emulator/sys/common/erl_poll.h
+++ b/erts/emulator/sys/common/erl_poll.h
@@ -93,7 +93,7 @@
# if defined(ERTS_USE_POLL)
# undef ERTS_POLL_USE_POLL
# define ERTS_POLL_USE_POLL 1
-# elif !defined(__WIN32__) && !defined(__OSE__)
+# elif !defined(__WIN32__)
# undef ERTS_POLL_USE_SELECT
# define ERTS_POLL_USE_SELECT 1
# endif
@@ -104,31 +104,13 @@
typedef Uint32 ErtsPollEvents;
#undef ERTS_POLL_EV_E2N
-#if defined(__WIN32__) || defined(__OSE__) /* --- win32 or ose -------- */
+#if defined(__WIN32__) /* --- win32 --------------------------------------- */
#define ERTS_POLL_EV_IN 1
#define ERTS_POLL_EV_OUT 2
#define ERTS_POLL_EV_ERR 4
#define ERTS_POLL_EV_NVAL 8
-#ifdef __OSE__
-
-typedef struct ErtsPollOseMsgList_ {
- struct ErtsPollOseMsgList_ *next;
- union SIGNAL *data;
-} ErtsPollOseMsgList;
-
-struct erts_sys_fd_type {
- SIGSELECT signo;
- ErlDrvOseEventId id;
- ErtsPollOseMsgList *msgs;
- ErlDrvOseEventId (*resolve_signal)(union SIGNAL *sig);
- ethr_mutex mtx;
- void *extra;
-};
-
-#endif
-
#elif ERTS_POLL_USE_EPOLL /* --- epoll ------------------------------- */
#include <sys/epoll.h>
@@ -140,7 +122,7 @@ struct erts_sys_fd_type {
#endif
#define ERTS_POLL_EV_E2N(EV) \
- ((__uint32_t) (EV))
+ ((uint32_t) (EV))
#define ERTS_POLL_EV_N2E(EV) \
((ErtsPollEvents) (EV))
diff --git a/erts/emulator/sys/ose/beam.lmconf b/erts/emulator/sys/ose/beam.lmconf
deleted file mode 100644
index 4ad46b01d9..0000000000
--- a/erts/emulator/sys/ose/beam.lmconf
+++ /dev/null
@@ -1,26 +0,0 @@
-OSE_LM_STACK_SIZES=256,512,1024,2048,4096,8192,16384,65536
-OSE_LM_SIGNAL_SIZES=31,63,127,255,1023,4095,16383,65535
-OSE_LM_POOL_SIZE=0x200000
-OSE_LM_MAIN_NAME=main
-OSE_LM_MAIN_STACK_SIZE=0xF000
-OSE_LM_MAIN_PRIORITY=20
-## Has to be of a type that allows MAM
-OSE_LM_PROGRAM_TYPE=APP_RAM
-OSE_LM_DATA_INIT=YES
-OSE_LM_BSS_INIT=YES
-OSE_LM_EXEC_MODEL=SHARED
-HEAP_MAX_SIZE=1000000000
-HEAP_SMALL_BUF_INIT_SIZE=20971520
-HEAP_LARGE_BUF_THRESHOLD=16000000
-HEAP_LOCK_TYPE=2
-
-ERTS_DEFAULT_PRIO=24
-ERTS_SCHEDULER_PRIO=24
-ERTS_ASYNC_PRIO=22
-ERTS_AUX_PRIO=24
-ERTS_SYS_MSG_DISPATCHER_PRIO=21
-
-# Setting the environment variable EFS_RESOLVE_TMO on the block to 0.
-# This will eliminiate delays when trying to open files on not mounted
-# volumes.
-EFS_RESOLVE_TMO=0
diff --git a/erts/emulator/sys/ose/driver_int.h b/erts/emulator/sys/ose/driver_int.h
deleted file mode 100644
index 4a5b7171d1..0000000000
--- a/erts/emulator/sys/ose/driver_int.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1997-2009. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * System dependant driver declarations
- */
-
-#ifndef __DRIVER_INT_H__
-#define __DRIVER_INT_H__
-
-#ifdef HAVE_SYS_UIO_H
-#include <sys/types.h>
-#include <sys/uio.h>
-
-typedef struct iovec SysIOVec;
-
-#else
-
-typedef struct {
- char* iov_base;
- int iov_len;
-} SysIOVec;
-
-#endif
-
-#endif
diff --git a/erts/emulator/sys/ose/erl_main.c b/erts/emulator/sys/ose/erl_main.c
deleted file mode 100644
index 877e85f43a..0000000000
--- a/erts/emulator/sys/ose/erl_main.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2000-2009. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-#include <stdlib.h>
-
-#include "sys.h"
-#include "erl_vm.h"
-#include "global.h"
-#include "ose.h"
-
-int
-main(int argc, char **argv) {
-
- (void)stdin;(void)stdout;(void)stderr;
-
- /* When starting using pm_create -c ARGV="-- -root ..", argv[0] is the first
- part of ARGV and not the name of the executable. So we shuffle some
- pointers here to make erl_start happy. */
- if (argv[0][0] == '-') {
- int i;
- char **tmp_argv = malloc(sizeof(char*)*(argc+1));
- for (i = 0; i < argc; i++)
- tmp_argv[i+1] = argv[i];
- tmp_argv[0] = "beam";
- erl_start(argc+1,tmp_argv);
- free(tmp_argv);
- } else {
- erl_start(argc,argv);
- }
-
- stop(current_process());
-
- return 0;
-}
diff --git a/erts/emulator/sys/ose/erl_ose_sys.h b/erts/emulator/sys/ose/erl_ose_sys.h
deleted file mode 100644
index d0cd3180bf..0000000000
--- a/erts/emulator/sys/ose/erl_ose_sys.h
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1997-2011. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- *
- * This file handles differences between different Unix systems.
- * This should be the only place with conditional compilation
- * depending on the type of OS.
- */
-
-#ifndef _ERL_OSE_SYS_H
-#define _ERL_OSE_SYS_H
-
-#include "ose.h"
-#undef NIL
-#include "ramlog.h"
-#include "erts.sig"
-
-#include "fcntl.h"
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
-#include "sys/param.h"
-#include "sys/time.h"
-#include "time.h"
-#include "dirent.h"
-#include "ethread.h"
-
-/* FIXME: configuration options */
-#define ERTS_SCHED_MIN_SPIN 1
-#define ERTS_SCHED_ONLY_POLL_SCHED_1 1
-#define ERTS_SCHED_FAIR 1
-#define NO_SYSCONF 1
-#define OPEN_MAX FOPEN_MAX
-
-#define MAP_ANON MAP_ANONYMOUS
-
-#ifndef HAVE_MMAP
-# define HAVE_MMAP 0
-#endif
-
-#if HAVE_MMAP
-# include "sys/mman.h"
-#endif
-
-/*
- * Min number of async threads
- */
-#define ERTS_MIN_NO_OF_ASYNC_THREADS 1
-
-/*
- * Our own type of "FD's"
- */
-#define ERTS_SYS_FD_TYPE struct erts_sys_fd_type*
-#define NO_FSTAT_ON_SYS_FD_TYPE 1 /* They are signals, not files */
-
-#include "sys/stat.h"
-
-/* FIXME mremap is not defined in OSE - POSIX issue */
-extern void *mremap (void *__addr, size_t __old_len, size_t __new_len,
- int __flags, ...);
-
-/* FIXME: mremap constants */
-#define MREMAP_MAYMOVE 1
-#define MREMAP_FIXED 2
-
-typedef void *GETENV_STATE;
-
-/*
-** For the erl_timer_sup module.
-*/
-#define HAVE_GETHRTIME
-
-typedef long long SysHrTime;
-extern SysHrTime sys_gethrtime(void);
-
-void sys_init_hrtime(void);
-
-typedef time_t erts_time_t;
-
-typedef struct timeval SysTimeval;
-
-#define sys_gettimeofday(Arg) ((void) gettimeofday((Arg), NULL))
-
-typedef struct {
- clock_t tms_utime;
- clock_t tms_stime;
- clock_t tms_cutime;
- clock_t tms_cstime;
-} SysTimes;
-
-extern int erts_ticks_per_sec;
-
-#define SYS_CLK_TCK (erts_ticks_per_sec)
-
-extern clock_t sys_times(SysTimes *buffer);
-
-/* No use in having other resolutions than 1 Ms. */
-#define SYS_CLOCK_RESOLUTION 1
-
-#define erts_isfinite finite
-
-#ifdef NO_FPE_SIGNALS
-
-#define erts_get_current_fp_exception() NULL
-#ifdef ERTS_SMP
-#define erts_thread_init_fp_exception() do{}while(0)
-#endif
-# define __ERTS_FP_CHECK_INIT(fpexnp) do {} while (0)
-# define __ERTS_FP_ERROR(fpexnp, f, Action) if (!finite(f)) { Action; } else {}
-# define __ERTS_FP_ERROR_THOROUGH(fpexnp, f, Action) __ERTS_FP_ERROR(fpexnp, f, Action)
-# define __ERTS_SAVE_FP_EXCEPTION(fpexnp)
-# define __ERTS_RESTORE_FP_EXCEPTION(fpexnp)
-
-#define erts_sys_block_fpe() 0
-#define erts_sys_unblock_fpe(x) do{}while(0)
-
-#else /* !NO_FPE_SIGNALS */
-
-extern volatile unsigned long *erts_get_current_fp_exception(void);
-#ifdef ERTS_SMP
-extern void erts_thread_init_fp_exception(void);
-#endif
-# if (defined(__i386__) || defined(__x86_64__)) && defined(__GNUC__)
-# define erts_fwait(fpexnp,f) \
- __asm__ __volatile__("fwait" : "=m"(*(fpexnp)) : "m"(f))
-# elif (defined(__powerpc__) || defined(__ppc__)) && defined(__GNUC__)
-# define erts_fwait(fpexnp,f) \
- __asm__ __volatile__("" : "=m"(*(fpexnp)) : "fm"(f))
-# elif defined(__sparc__) && defined(__linux__) && defined(__GNUC__)
-# define erts_fwait(fpexnp,f) \
- __asm__ __volatile__("" : "=m"(*(fpexnp)) : "em"(f))
-# else
-# define erts_fwait(fpexnp,f) \
- __asm__ __volatile__("" : "=m"(*(fpexnp)) : "g"(f))
-# endif
-# if (defined(__i386__) || defined(__x86_64__)) && defined(__GNUC__)
- extern void erts_restore_fpu(void);
-# else
-# define erts_restore_fpu() /*empty*/
-# endif
-# if (!defined(__GNUC__) || \
- (__GNUC__ < 2) || \
- (__GNUC__ == 2 && __GNUC_MINOR < 96)) && \
- !defined(__builtin_expect)
-# define __builtin_expect(x, expected_value) (x)
-# endif
-static __inline__ int erts_check_fpe(volatile unsigned long *fp_exception, double f)
-{
- erts_fwait(fp_exception, f);
- if (__builtin_expect(*fp_exception == 0, 1))
- return 0;
- *fp_exception = 0;
- erts_restore_fpu();
- return 1;
-}
-# undef erts_fwait
-# undef erts_restore_fpu
-extern void erts_fp_check_init_error(volatile unsigned long *fp_exception);
-static __inline__ void __ERTS_FP_CHECK_INIT(volatile unsigned long *fp_exception)
-{
- if (__builtin_expect(*fp_exception == 0, 1))
- return;
- erts_fp_check_init_error(fp_exception);
-}
-# define __ERTS_FP_ERROR(fpexnp, f, Action) do { if (erts_check_fpe((fpexnp),(f))) { Action; } } while (0)
-# define __ERTS_SAVE_FP_EXCEPTION(fpexnp) unsigned long old_erl_fp_exception = *(fpexnp)
-# define __ERTS_RESTORE_FP_EXCEPTION(fpexnp) \
- do { *(fpexnp) = old_erl_fp_exception; } while (0)
- /* This is for library calls where we don't trust the external
- code to always throw floating-point exceptions on errors. */
-static __inline__ int erts_check_fpe_thorough(volatile unsigned long *fp_exception, double f)
-{
- return erts_check_fpe(fp_exception, f) || !finite(f);
-}
-# define __ERTS_FP_ERROR_THOROUGH(fpexnp, f, Action) \
- do { if (erts_check_fpe_thorough((fpexnp),(f))) { Action; } } while (0)
-
-int erts_sys_block_fpe(void);
-void erts_sys_unblock_fpe(int);
-
-#endif /* !NO_FPE_SIGNALS */
-
-#define ERTS_FP_CHECK_INIT(p) __ERTS_FP_CHECK_INIT(&(p)->fp_exception)
-#define ERTS_FP_ERROR(p, f, A) __ERTS_FP_ERROR(&(p)->fp_exception, f, A)
-#define ERTS_FP_ERROR_THOROUGH(p, f, A) __ERTS_FP_ERROR_THOROUGH(&(p)->fp_exception, f, A)
-
-/* FIXME: force HAVE_GETPAGESIZE and stub getpagesize */
-#ifndef HAVE_GETPAGESIZE
-#define HAVE_GETPAGESIZE 1
-#endif
-
-extern int getpagesize(void);
-
-#ifndef HZ
-#define HZ 60
-#endif
-
-/* OSE5 doesn't provide limits.h so a number of macros should be
- * added manually */
-
-#ifndef CHAR_BIT
-#define CHAR_BIT 8
-#endif
-
-/* Minimum and maximum values a `signed int' can hold. */
-#ifndef INT_MAX
-#define INT_MAX 2147483647
-#endif
-
-#ifndef INT_MIN
-#define INT_MIN (-INT_MAX - 1)
-#endif
-
-#ifndef UINT_MAX
-# define UINT_MAX 4294967295U
-#endif
-
-/*
-static void erts_ose_sys_send(union SIGNAL **signal,PROCESS dst,
- char* file,int line) {
- SIGSELECT **ziggy = (SIGSELECT**)signal;
- printf("%s:%d 0x%x Send signal 0x%x(0x%x) to 0x%x\r\n",
- file,line,current_process(),ziggy[0][0],*ziggy,dst);
- send(signal,dst);
-}
-#define send(signal,dst) erts_ose_sys_send(signal,dst,__FILE__,__LINE__)
-
-static void erts_ose_sys_send_w_sender(union SIGNAL **signal,
- PROCESS sender,PROCESS dst,
- char* file,int line) {
- SIGSELECT **ziggy = (SIGSELECT**)signal;
- printf("%s:%d 0x%x Send signal 0x%x(0x%x) to 0x%x as 0x%x\r\n",
- file,line,current_process(),ziggy[0][0],*ziggy,dst,sender);
- send_w_sender(signal,sender,dst);
-}
-#define send_w_sender(signal,sender,dst) \
- erts_ose_sys_send_w_sender(signal,sender,dst,__FILE__,__LINE__)
-
-
-static union SIGNAL *erts_ose_sys_receive(SIGSELECT *sigsel,
- char *file,
- int line) {
- SIGSELECT *sig;
- int i;
-
- printf("%s:%d 0x%x receive({%d,",file,line,current_process(),sigsel[0]);
- for (i = 1; i < sigsel[0]; i++)
- printf("0x%x, ",sigsel[i]);
- if (sigsel[0] != 0)
- printf("0x%x",sigsel[i]);
- printf("})\n");
- sig = (SIGSELECT*)receive(sigsel);
- printf("%s:%d 0x%x got 0x%x from 0x%x\n",file,line,current_process(),
- *sig,sender((union SIGNAL**)(&sig)));
- return (union SIGNAL*)sig;
-}
-#define receive(SIGSEL) erts_ose_sys_receive(SIGSEL,__FILE__,__LINE__)
-
-static union SIGNAL *erts_ose_sys_receive_w_tmo(OSTIME tmo,SIGSELECT *sigsel,
- char *file,int line) {
- SIGSELECT *sig;
- int i;
- if (tmo == 0) {
- sig = (SIGSELECT*)receive_w_tmo(tmo,sigsel);
- if (sig != NULL) {
- printf("%s:%d 0x%x receive_w_tmo(0,{%d,",file,line,current_process(),
- sigsel[0]);
- for (i = 1; i < sigsel[0]; i++)
- printf("0x%x, ",sigsel[i]);
- if (sigsel[0] != 0)
- printf("0x%x",sigsel[i]);
- printf("})\n");
- printf("%s:%d 0x%x got 0x%x from 0x%x\n",file,line,current_process(),
- *sig,sender((union SIGNAL**)(&sig)));
- }
- } else {
- printf("%s:%d 0x%x receive_w_tmo(%u,{%d,",file,line,current_process(),tmo,
- sigsel[0]);
- for (i = 1; i < sigsel[0]; i++)
- printf("0x%x, ",sigsel[i]);
- if (sigsel[0] != 0)
- printf("0x%x",sigsel[i]);
- printf("})\n");
- sig = (SIGSELECT*)receive_w_tmo(tmo,sigsel);
- printf("%s:%d 0x%x got ",file,line,current_process());
- if (sig == NULL)
- printf("TIMEOUT\n");
- else
- printf("0x%x from 0x%x\n",*sig,sender((union SIGNAL**)(&sig)));
- }
-
- return (union SIGNAL*)sig;
-}
-
-#define receive_w_tmo(tmo,sigsel) erts_ose_sys_receive_w_tmo(tmo,sigsel, \
- __FILE__,__LINE__)
-
-static union SIGNAL *erts_ose_sys_receive_fsem(OSTIME tmo,SIGSELECT *sigsel,
- OSFSEMVAL fsem,
- char *file,int line) {
- SIGSELECT *sig;
- int i;
- if (tmo == 0) {
- sig = (SIGSELECT*)receive_fsem(tmo,sigsel,fsem);
- if (sig != NULL && sig != OS_RCV_FSEM) {
- printf("%s:%d 0x%x receive_fsem(0,{%d,",file,line,current_process(),
- sigsel[0]);
- for (i = 1; i < sigsel[0]; i++)
- printf("0x%x, ",sigsel[i]);
- if (sigsel[0] != 0)
- printf("0x%x",sigsel[i]);
- printf("},%d)\n",fsem);
- printf("%s:%d 0x%x got 0x%x from 0x%x\n",file,line,current_process(),
- *sig,sender((union SIGNAL**)(&sig)));
- }
- } else {
- printf("%s:%d 0x%x receive_fsem(%u,{%d,",file,line,current_process(),tmo,
- sigsel[0]);
- for (i = 1; i < sigsel[0]; i++)
- printf("0x%x, ",sigsel[i]);
- if (sigsel[0] != 0)
- printf("0x%x",sigsel[i]);
- printf("},%d)\n",fsem);
- sig = (SIGSELECT*)receive_fsem(tmo,sigsel,fsem);
- printf("%s:%d 0x%x got ",file,line,current_process());
- if (sig == NULL)
- printf("TIMEOUT\n");
- else if (sig == OS_RCV_FSEM)
- printf("FSEM\n");
- else
- printf("0x%x from 0x%x\n",*sig,sender((union SIGNAL**)(&sig)));
- }
-
- return (union SIGNAL*)sig;
-}
-
-#define receive_fsem(tmo,sigsel,fsem) \
- erts_ose_sys_receive_fsem(tmo,sigsel,fsem,__FILE__,__LINE__)
-*/
-#endif /* _ERL_OSE_SYS_H */
diff --git a/erts/emulator/sys/ose/erl_ose_sys_ddll.c b/erts/emulator/sys/ose/erl_ose_sys_ddll.c
deleted file mode 100644
index 5051f7fcc1..0000000000
--- a/erts/emulator/sys/ose/erl_ose_sys_ddll.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2006-2013. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-/*
- * Interface functions to the dynamic linker using dl* functions.
- * (No support in OSE, we use static linkage instead)
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "sys.h"
-#include "erl_vm.h"
-#include "global.h"
-
-
-void erl_sys_ddll_init(void) {
-}
-
-/*
- * Open a shared object
- */
-int erts_sys_ddll_open(const char *full_name, void **handle, ErtsSysDdllError* err)
-{
- return ERL_DE_ERROR_NO_DDLL_FUNCTIONALITY;
-}
-
-int erts_sys_ddll_open_noext(char *dlname, void **handle, ErtsSysDdllError* err)
-{
- return ERL_DE_ERROR_NO_DDLL_FUNCTIONALITY;
-}
-
-/*
- * Find a symbol in the shared object
- */
-int erts_sys_ddll_sym2(void *handle, const char *func_name, void **function,
- ErtsSysDdllError* err)
-{
- return ERL_DE_ERROR_NO_DDLL_FUNCTIONALITY;
-}
-
-/* XXX:PaN These two will be changed with new driver interface! */
-
-/*
- * Load the driver init function, might appear under different names depending on object arch...
- */
-
-int erts_sys_ddll_load_driver_init(void *handle, void **function)
-{
- void *fn;
- int res;
- if ((res = erts_sys_ddll_sym2(handle, "driver_init", &fn, NULL)) != ERL_DE_NO_ERROR) {
- res = erts_sys_ddll_sym2(handle, "_driver_init", &fn, NULL);
- }
- if (res == ERL_DE_NO_ERROR) {
- *function = fn;
- }
- return res;
-}
-
-int erts_sys_ddll_load_nif_init(void *handle, void **function, ErtsSysDdllError* err)
-{
- void *fn;
- int res;
- if ((res = erts_sys_ddll_sym2(handle, "nif_init", &fn, err)) != ERL_DE_NO_ERROR) {
- res = erts_sys_ddll_sym2(handle, "_nif_init", &fn, err);
- }
- if (res == ERL_DE_NO_ERROR) {
- *function = fn;
- }
- return res;
-}
-
-/*
- * Call the driver_init function, whatever it's really called, simple on unix...
-*/
-void *erts_sys_ddll_call_init(void *function) {
- void *(*initfn)(void) = function;
- return (*initfn)();
-}
-void *erts_sys_ddll_call_nif_init(void *function) {
- return erts_sys_ddll_call_init(function);
-}
-
-
-
-/*
- * Close a chared object
- */
-int erts_sys_ddll_close2(void *handle, ErtsSysDdllError* err)
-{
- return ERL_DE_ERROR_NO_DDLL_FUNCTIONALITY;
-}
-
-
-/*
- * Return string that describes the (current) error
- */
-char *erts_sys_ddll_error(int code)
-{
- return "Unspecified error";
-}
-
-void erts_sys_ddll_free_error(ErtsSysDdllError* err)
-{
- if (err->str != NULL) {
- erts_free(ERTS_ALC_T_DDLL_TMP_BUF, err->str);
- }
-}
diff --git a/erts/emulator/sys/ose/erl_poll.c b/erts/emulator/sys/ose/erl_poll.c
deleted file mode 100644
index 5cee582a00..0000000000
--- a/erts/emulator/sys/ose/erl_poll.c
+++ /dev/null
@@ -1,818 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2006-2012. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-/*
- * Description: Poll interface suitable for ERTS on OSE with or without
- * SMP support.
- *
- * The interface is currently implemented using:
- * - receive + receive_fsem
- *
- * Author: Lukas Larsson
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "erl_thr_progress.h"
-#include "erl_driver.h"
-#include "erl_alloc.h"
-#include "erl_poll.h"
-
-#define NOFILE 4096
-
-/*
- * Some debug macros
- */
-
-/* #define HARDDEBUG
-#define HARDTRACE*/
-#ifdef HARDDEBUG
-#ifdef HARDTRACE
-#define HARDTRACEF(X, ...) { fprintf(stderr, X, __VA_ARGS__); fprintf(stderr,"\r\n"); }
-#else
-#define HARDTRACEF(...)
-#endif
-
-#else
-#define HARDTRACEF(X,...)
-#define HARDDEBUGF(...)
-#endif
-
-#if 0
-#define ERTS_POLL_DEBUG_PRINT
-#endif
-
-#if defined(DEBUG) && 0
-#define HARD_DEBUG
-#endif
-
-# define SEL_ALLOC erts_alloc
-# define SEL_REALLOC realloc_wrap
-# define SEL_FREE erts_free
-
-#ifdef ERTS_SMP
-
-#define ERTS_POLLSET_LOCK(PS) \
- erts_smp_mtx_lock(&(PS)->mtx)
-#define ERTS_POLLSET_UNLOCK(PS) \
- erts_smp_mtx_unlock(&(PS)->mtx)
-
-#else
-
-#define ERTS_POLLSET_LOCK(PS)
-#define ERTS_POLLSET_UNLOCK(PS)
-
-#endif
-
-/*
- * --- Data types ------------------------------------------------------------
- */
-
-union SIGNAL {
- SIGSELECT sig_no;
-};
-
-typedef struct erts_sigsel_item_ ErtsSigSelItem;
-
-struct erts_sigsel_item_ {
- ErtsSigSelItem *next;
- ErtsSysFdType fd;
- ErtsPollEvents events;
-};
-
-typedef struct erts_sigsel_info_ ErtsSigSelInfo;
-
-struct erts_sigsel_info_ {
- ErtsSigSelInfo *next;
- SIGSELECT signo;
- ErlDrvOseEventId (*decode)(union SIGNAL* sig);
- ErtsSigSelItem *fds;
-};
-
-struct ErtsPollSet_ {
- SIGSELECT *sigs;
- ErtsSigSelInfo *info;
- Uint sig_count;
- Uint item_count;
- PROCESS interrupt;
- erts_atomic32_t wakeup_state;
- erts_atomic64_t timeout_time;
-#ifdef ERTS_SMP
- erts_smp_mtx_t mtx;
-#endif
-};
-
-static int max_fds = -1;
-
-static ERTS_INLINE void
-init_timeout_time(ErtsPollSet ps)
-{
- erts_atomic64_init_nob(&ps->timeout_time,
- (erts_aint64_t) ERTS_MONOTONIC_TIME_MAX);
-}
-
-static ERTS_INLINE void
-set_timeout_time(ErtsPollSet ps, ErtsMonotonicTime time)
-{
- erts_atomic64_set_relb(&ps->timeout_time,
- (erts_aint64_t) time);
-}
-
-static ERTS_INLINE ErtsMonotonicTime
-get_timeout_time(ErtsPollSet ps)
-{
- return (ErtsMonotonicTime) erts_atomic64_read_acqb(&ps->timeout_time);
-}
-
-#define ERTS_POLL_NOT_WOKEN ((erts_aint32_t) (1 << 0))
-#define ERTS_POLL_WOKEN_INTR ((erts_aint32_t) (1 << 1))
-#define ERTS_POLL_WOKEN_TIMEDOUT ((erts_aint32_t) (1 << 2))
-#define ERTS_POLL_WOKEN_IO_READY ((erts_aint32_t) (1 << 3))
-#define ERTS_POLL_SLEEPING ((erts_aint32_t) (1 << 4))
-
-/* signal list prototypes */
-static ErtsSigSelInfo *get_sigsel_info(ErtsPollSet ps, SIGSELECT signo);
-static ErtsSigSelItem *get_sigsel_item(ErtsPollSet ps, ErtsSysFdType fd);
-static ErtsSigSelInfo *add_sigsel_info(ErtsPollSet ps, ErtsSysFdType fd,
- ErlDrvOseEventId (*decode)(union SIGNAL* sig));
-static ErtsSigSelItem *add_sigsel_item(ErtsPollSet ps, ErtsSysFdType fd,
- ErlDrvOseEventId (*decode)(union SIGNAL* sig));
-static int del_sigsel_info(ErtsPollSet ps, ErtsSigSelInfo *info);
-static int del_sigsel_item(ErtsPollSet ps, ErtsSigSelItem *item);
-static int update_sigsel(ErtsPollSet ps);
-
-static ErtsSigSelInfo *
-get_sigsel_info(ErtsPollSet ps, SIGSELECT signo) {
- ErtsSigSelInfo *curr = ps->info;
- while (curr != NULL) {
- if (curr->signo == signo)
- return curr;
- curr = curr->next;
- }
- return NULL;
-}
-
-static ErtsSigSelItem *
-get_sigsel_item(ErtsPollSet ps, ErtsSysFdType fd) {
- ErtsSigSelInfo *info = get_sigsel_info(ps,fd->signo);
- ErtsSigSelItem *curr;
-
- if (info == NULL)
- return NULL;
-
- curr = info->fds;
-
- while (curr != NULL) {
- if (curr->fd->id == fd->id) {
- ASSERT(curr->fd->signo == fd->signo);
- return curr;
- }
- curr = curr->next;
- }
- return NULL;
-}
-
-static ErtsSigSelInfo *
-add_sigsel_info(ErtsPollSet ps, ErtsSysFdType fd,
- ErlDrvOseEventId (*decode)(union SIGNAL* sig)) {
- ErtsSigSelInfo *info = SEL_ALLOC(ERTS_ALC_T_POLLSET,
- sizeof(ErtsSigSelInfo));
- info->next = ps->info;
- info->fds = NULL;
- info->signo = fd->signo;
- info->decode = decode;
- ps->info = info;
- ps->sig_count++;
- return info;
-}
-
-static ErtsSigSelItem *
-add_sigsel_item(ErtsPollSet ps, ErtsSysFdType fd,
- ErlDrvOseEventId (*decode)(union SIGNAL* sig)) {
- ErtsSigSelInfo *info = get_sigsel_info(ps,fd->signo);
- ErtsSigSelItem *item = SEL_ALLOC(ERTS_ALC_T_POLLSET,
- sizeof(ErtsSigSelItem));
- if (info == NULL)
- info = add_sigsel_info(ps, fd, decode);
- if (info->decode != decode) {
- erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
- erts_dsprintf(dsbufp, "erts_poll_control() inconsistency: multiple resolve_signal functions for same signal (%d)\n",
- fd->signo);
- erts_send_error_to_logger_nogl(dsbufp);
- }
- ASSERT(info->decode == decode);
- item->next = info->fds;
- item->fd = fd;
- item->events = 0;
- info->fds = item;
- ps->item_count++;
- return item;
-}
-
-static int del_sigsel_info(ErtsPollSet ps, ErtsSigSelInfo *info) {
- ErtsSigSelInfo *curr, *prev;
-
- if (ps->info == info) {
- ps->info = ps->info->next;
- } else {
- curr = ps->info->next;
- prev = ps->info;
-
- while (curr != info) {
- if (curr == NULL)
- return 1;
- prev = curr;
- curr = curr->next;
- }
- prev->next = curr->next;
- }
-
- ps->sig_count--;
- SEL_FREE(ERTS_ALC_T_POLLSET, info);
- return 0;
-}
-
-static int del_sigsel_item(ErtsPollSet ps, ErtsSigSelItem *item) {
- ErtsSigSelInfo *info = get_sigsel_info(ps,item->fd->signo);
- ErtsSigSelItem *curr, *prev;
-
- ps->item_count--;
- ASSERT(ps->item_count >= 0);
-
- if (info->fds == item) {
- info->fds = info->fds->next;
- SEL_FREE(ERTS_ALC_T_POLLSET,item);
- if (info->fds == NULL)
- return del_sigsel_info(ps,info);
- return 0;
- }
-
- curr = info->fds->next;
- prev = info->fds;
-
- while (curr != item) {
- if (curr == NULL) {
- /* We did not find an item to delete so we have to
- * increment item count again.
- */
- ps->item_count++;
- return 1;
- }
- prev = curr;
- curr = curr->next;
- }
- prev->next = curr->next;
- SEL_FREE(ERTS_ALC_T_POLLSET,item);
- return 0;
-}
-
-#ifdef ERTS_SMP
-
-static void update_redir_tables(ErtsPollSet ps) {
- struct OS_redir_entry *redir_table;
- PROCESS sched_1 = ERTS_SCHEDULER_IX(0)->tid.id;
- int i;
- redir_table = SEL_ALLOC(ERTS_ALC_T_POLLSET,
- sizeof(struct OS_redir_entry)*(ps->sig_count+1));
-
- redir_table[0].sig = ps->sig_count+1;
- redir_table[0].pid = 0;
-
- for (i = 1; i < ps->sig_count+1; i++) {
- redir_table[i].sig = ps->sigs[i];
- redir_table[i].pid = sched_1;
- }
-
- for (i = 1; i < erts_no_schedulers; i++) {
- ErtsSchedulerData *esdp = ERTS_SCHEDULER_IX(i);
- set_redirection(esdp->tid.id,redir_table);
- }
-
- SEL_FREE(ERTS_ALC_T_POLLSET,redir_table);
-}
-
-#endif
-
-static int update_sigsel(ErtsPollSet ps) {
- ErtsSigSelInfo *info = ps->info;
-
- int i;
-
- if (ps->sigs != NULL)
- SEL_FREE(ERTS_ALC_T_POLLSET,ps->sigs);
-
- if (ps->sig_count == 0) {
- /* If there are no signals we place a non-valid signal to make sure that
- * we do not trigger on a any unrelated signals which are sent to the
- * process.
- */
- ps->sigs = SEL_ALLOC(ERTS_ALC_T_POLLSET,sizeof(SIGSELECT)*(2));
- ps->sigs[0] = 1;
- ps->sigs[1] = ERTS_SIGNAL_INVALID;
- return 0;
- }
-
- ps->sigs = SEL_ALLOC(ERTS_ALC_T_POLLSET,sizeof(SIGSELECT)*(ps->sig_count+1));
- ps->sigs[0] = ps->sig_count;
-
- for (i = 1; info != NULL; i++, info = info->next)
- ps->sigs[i] = info->signo;
-
-#ifdef ERTS_SMP
- update_redir_tables(ps);
-#endif
-
- return 0;
-}
-
-static ERTS_INLINE void
-wake_poller(ErtsPollSet ps)
-{
- erts_aint32_t wakeup_state;
-
- ERTS_THR_MEMORY_BARRIER;
- wakeup_state = erts_atomic32_read_nob(&ps->wakeup_state);
- while (wakeup_state != ERTS_POLL_WOKEN_IO_READY
- && wakeup_state != ERTS_POLL_WOKEN_INTR) {
- erts_aint32_t act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_INTR,
- wakeup_state);
- if (act == wakeup_state) {
- wakeup_state = act;
- break;
- }
- wakeup_state = act;
- }
- if (wakeup_state == ERTS_POLL_SLEEPING) {
- /*
- * Since we don't know the internals of signal_fsem() we issue
- * a memory barrier as a safety precaution ensuring that
- * the store we just made to wakeup_state wont be reordered
- * with loads in signal_fsem().
- */
- ERTS_THR_MEMORY_BARRIER;
- signal_fsem(ps->interrupt);
- }
-}
-
-static ERTS_INLINE void
-reset_interrupt(ErtsPollSet ps)
-{
- /* We need to keep io-ready if set */
- erts_aint32_t wakeup_state = erts_atomic32_read_nob(&ps->wakeup_state);
- while (wakeup_state != ERTS_POLL_NOT_WOKEN &&
- wakeup_state != ERTS_POLL_SLEEPING) {
- erts_aint32_t act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_NOT_WOKEN,
- wakeup_state);
- if (wakeup_state == act)
- break;
- wakeup_state = act;
- }
- ERTS_THR_MEMORY_BARRIER;
-}
-
-static ERTS_INLINE void
-set_interrupt(ErtsPollSet ps)
-{
- wake_poller(ps);
-}
-
-void erts_poll_interrupt(ErtsPollSet ps,int set) {
- HARDTRACEF("erts_poll_interrupt called!\n");
-
- if (!set)
- reset_interrupt(ps);
- else
- set_interrupt(ps);
-
-}
-
-void erts_poll_interrupt_timed(ErtsPollSet ps,
- int set,
- ErtsTimeoutTime timeout_time) {
- HARDTRACEF("erts_poll_interrupt_timed called!\n");
-
- if (!set)
- reset_interrupt(ps);
- else if (get_timeout_time(ps) > timeout_time)
- set_interrupt(ps);
-}
-
-ErtsPollEvents erts_poll_control(ErtsPollSet ps, ErtsSysFdType fd,
- ErtsPollEvents pe, int on, int* do_wake) {
- ErtsSigSelItem *curr;
- ErtsPollEvents new_events;
- int old_sig_count;
-
- HARDTRACEF(
- "%ux: In erts_poll_control, fd = %d, pe = %d, on = %d, *do_wake = %d, curr = 0x%xu",
- ps, fd, pe, on, do_wake, curr);
-
- ERTS_POLLSET_LOCK(ps);
-
- if (on && (pe & ERTS_POLL_EV_IN) && (pe & ERTS_POLL_EV_OUT)) {
- /* Check to make sure both in and out are not used at the same time */
- new_events = ERTS_POLL_EV_NVAL;
- goto done;
- }
-
- curr = get_sigsel_item(ps, fd);
- old_sig_count = ps->sig_count;
-
- if (curr == NULL && on) {
- curr = add_sigsel_item(ps, fd, fd->resolve_signal);
- } else if (curr == NULL && !on) {
- new_events = ERTS_POLL_EV_NVAL;
- goto done;
- }
-
- new_events = curr->events;
-
- if (pe == 0) {
- *do_wake = 0;
- goto done;
- }
-
- if (on) {
- new_events |= pe;
- curr->events = new_events;
- } else {
- new_events &= ~pe;
- curr->events = new_events;
- if (new_events == 0 && del_sigsel_item(ps, curr)) {
- new_events = ERTS_POLL_EV_NVAL;
- goto done;
- }
- }
-
- if (ps->sig_count != old_sig_count) {
- if (update_sigsel(ps))
- new_events = ERTS_POLL_EV_NVAL;
- }
-done:
- ERTS_POLLSET_UNLOCK(ps);
- HARDTRACEF("%ux: Out erts_poll_control", ps);
- return new_events;
-}
-
-int erts_poll_wait(ErtsPollSet ps,
- ErtsPollResFd pr[],
- int *len,
- ErtsMonotonicTime timeout_time)
-{
- int res = ETIMEDOUT, no_fds, currid = 0;
- OSTIME timeout;
- union SIGNAL *sig;
- ErtsMonotonicTime current_time, diff_time, timeout;
- // HARDTRACEF("%ux: In erts_poll_wait",ps);
- if (ps->interrupt == (PROCESS)0)
- ps->interrupt = current_process();
-
- ASSERT(current_process() == ps->interrupt);
- ASSERT(get_fsem(current_process()) == 0);
- ASSERT(erts_atomic32_read_nob(&ps->wakeup_state) &
- (ERTS_POLL_NOT_WOKEN | ERTS_POLL_WOKEN_INTR));
- /* Max no of spots avable in pr */
- no_fds = *len;
-
- *len = 0;
-
- /* erts_printf("Entering erts_poll_wait(), timeout_time=%bps\n",
- timeout_time); */
-
- if (timeout_time == ERTS_POLL_NO_TIMEOUT) {
- no_timeout:
- timeout = (OSTIME) 0;
- save_timeout_time = ERTS_MONOTONIC_TIME_MIN;
- }
- else {
- ErtsMonotonicTime current_time, diff_time;
- current_time = erts_get_monotonic_time(NULL);
- diff_time = timeout_time - current_time;
- if (diff_time <= 0)
- goto no_timeout;
- diff_time = (ERTS_MONOTONIC_TO_MSEC(diff_time - 1) + 1);
- if (diff_time > INT_MAX)
- diff_time = INT_MAX;
- timeout = (OSTIME) diff_time;
- save_timeout_time = current_time;
- save_timeout_time += ERTS_MSEC_TO_MONOTONIC(diff_time);
- }
-
- set_timeout_time(ps, save_timeout_time);
-
- while (currid < no_fds) {
- if (timeout > 0) {
- erts_aint32_t act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_SLEEPING,
- ERTS_POLL_NOT_WOKEN);
- if (act == ERTS_POLL_NOT_WOKEN) {
-#ifdef ERTS_SMP
- erts_thr_progress_prepare_wait(NULL);
-#endif
- sig = receive_fsem(timeout, ps->sigs, 1);
-#ifdef ERTS_SMP
- erts_thr_progress_finalize_wait(NULL);
-#endif
- } else {
- ASSERT(act == ERTS_POLL_WOKEN_INTR);
- sig = OS_RCV_FSEM;
- }
- } else
- sig = receive_w_tmo(0, ps->sigs);
-
- if (sig == NULL) {
- if (timeout > 0) {
- erts_aint32_t act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_TIMEDOUT,
- ERTS_POLL_SLEEPING);
- if (act == ERTS_POLL_WOKEN_INTR)
- /* Restore fsem as it was signaled but we got a timeout */
- wait_fsem(1);
- } else
- erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_TIMEDOUT,
- ERTS_POLL_NOT_WOKEN);
- break;
- } else if (sig == OS_RCV_FSEM) {
- ASSERT(erts_atomic32_read_nob(&ps->wakeup_state) == ERTS_POLL_WOKEN_INTR);
- break;
- }
- {
- ErtsSigSelInfo *info = get_sigsel_info(ps, sig->sig_no);
- struct erts_sys_fd_type fd = { sig->sig_no, info->decode(sig) };
- ErtsSigSelItem *item = get_sigsel_item(ps, &fd);
-
- ASSERT(sig);
- if (currid == 0 && timeout > 0) {
- erts_aint32_t act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_IO_READY,
- ERTS_POLL_SLEEPING);
- if (act == ERTS_POLL_WOKEN_INTR) {
- /* Restore fsem as it was signaled but we got a msg */
- wait_fsem(1);
- act = erts_atomic32_cmpxchg_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_IO_READY,
- ERTS_POLL_WOKEN_INTR);
- }
- } else if (currid == 0) {
- erts_atomic32_set_nob(&ps->wakeup_state,
- ERTS_POLL_WOKEN_IO_READY);
- }
-
- if (item == NULL) {
- erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
- erts_dsprintf(
- dsbufp,
- "erts_poll_wait() failed: found unkown signal id %d (signo %u) "
- "(curr_proc 0x%x)\n",
- fd.id, fd.signo, current_process());
- erts_send_error_to_logger_nogl(dsbufp);
- timeout = 0;
- /* Under normal circumstances the signal is deallocated by the
- * driver that issued the select operation. But in this case
- * there's no driver waiting for such signal so we have to
- * deallocate it here */
- if (sig)
- free_buf(&sig);
- } else {
- int i;
- struct erts_sys_fd_type *fd = NULL;
- ErtsPollOseMsgList *tl,*new;
-
- /* Check if this fd has already been triggered by a previous signal */
- for (i = 0; i < currid;i++) {
- if (pr[i].fd == item->fd) {
- fd = pr[i].fd;
- pr[i].events |= item->events;
- break;
- }
- }
-
- /* First time this fd is triggered */
- if (fd == NULL) {
- pr[currid].fd = item->fd;
- pr[currid].events = item->events;
- fd = item->fd;
- timeout = 0;
- currid++;
- }
-
- /* Insert new signal in approriate list */
- new = erts_alloc(ERTS_ALC_T_FD_SIG_LIST,sizeof(ErtsPollOseMsgList));
- new->next = NULL;
- new->data = sig;
-
- ethr_mutex_lock(&fd->mtx);
- tl = fd->msgs;
-
- if (tl == NULL) {
- fd->msgs = new;
- } else {
- while (tl->next != NULL)
- tl = tl->next;
- tl->next = new;
- }
- ethr_mutex_unlock(&fd->mtx);
- }
-
- }
- }
-
- {
- erts_aint32_t wakeup_state = erts_atomic32_read_nob(&ps->wakeup_state);
-
- switch (wakeup_state) {
- case ERTS_POLL_WOKEN_IO_READY:
- res = 0;
- break;
- case ERTS_POLL_WOKEN_INTR:
- res = EINTR;
- break;
- case ERTS_POLL_WOKEN_TIMEDOUT:
- res = ETIMEDOUT;
- break;
- case ERTS_POLL_NOT_WOKEN:
- /* This happens when we get an invalid signal only */
- res = EINVAL;
- break;
- default:
- res = 0;
- erl_exit(ERTS_ABORT_EXIT,
- "%s:%d: Internal error: Invalid wakeup_state=%d\n",
- __FILE__, __LINE__, (int) wakeup_state);
- }
- }
-
- erts_atomic32_set_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN);
- set_timeout_time(ps, ERTS_MONOTONIC_TIME_MAX);
-
- *len = currid;
-
- // HARDTRACEF("%ux: Out erts_poll_wait",ps);
- return res;
-}
-
-int erts_poll_max_fds(void)
-{
-
- HARDTRACEF("In/Out erts_poll_max_fds -> %d",max_fds);
- return max_fds;
-}
-
-void erts_poll_info(ErtsPollSet ps,
- ErtsPollInfo *pip)
-{
- Uint size = 0;
- Uint num_events = 0;
-
- size += sizeof(struct ErtsPollSet_);
- size += sizeof(ErtsSigSelInfo)*ps->sig_count;
- size += sizeof(ErtsSigSelItem)*ps->item_count;
- size += sizeof(SIGSELECT)*(ps->sig_count+1);
-
- pip->primary = "receive_fsem";
-
- pip->fallback = NULL;
-
- pip->kernel_poll = NULL;
-
- pip->memory_size = size;
-
- pip->poll_set_size = num_events;
-
- pip->fallback_poll_set_size = 0;
-
- pip->lazy_updates = 0;
-
- pip->pending_updates = 0;
-
- pip->batch_updates = 0;
-
- pip->concurrent_updates = 0;
-
-
- pip->max_fds = erts_poll_max_fds();
- HARDTRACEF("%ux: Out erts_poll_info",ps);
-
-}
-
-ErtsPollSet erts_poll_create_pollset(void)
-{
- ErtsPollSet ps = SEL_ALLOC(ERTS_ALC_T_POLLSET,
- sizeof(struct ErtsPollSet_));
-
- ps->sigs = NULL;
- ps->sig_count = 0;
- ps->item_count = 0;
- ps->info = NULL;
- ps->interrupt = (PROCESS)0;
- erts_atomic32_init_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN);
- init_timeout_time(ps);
-#ifdef ERTS_SMP
- erts_smp_mtx_init(&ps->mtx, "pollset");
-#endif
- update_sigsel(ps);
- HARDTRACEF("%ux: Out erts_poll_create_pollset",ps);
- return ps;
-}
-
-void erts_poll_destroy_pollset(ErtsPollSet ps)
-{
- ErtsSigSelInfo *info;
- for (info = ps->info; ps->info != NULL; info = ps->info, ps->info = ps->info->next) {
- ErtsSigSelItem *item;
- for (item = info->fds; info->fds != NULL; item = info->fds, info->fds = info->fds->next)
- SEL_FREE(ERTS_ALC_T_POLLSET, item);
- SEL_FREE(ERTS_ALC_T_POLLSET, info);
- }
-
- SEL_FREE(ERTS_ALC_T_POLLSET,ps->sigs);
-
-#ifdef ERTS_SMP
- erts_smp_mtx_destroy(&ps->mtx);
-#endif
-
- SEL_FREE(ERTS_ALC_T_POLLSET,ps);
-}
-
-void erts_poll_init(void)
-{
- HARDTRACEF("In %s", __FUNCTION__);
- max_fds = 256;
-
- HARDTRACEF("Out %s", __FUNCTION__);
-}
-
-
-/* OSE driver functions */
-
-union SIGNAL *erl_drv_ose_get_signal(ErlDrvEvent drv_ev) {
- struct erts_sys_fd_type *ev = (struct erts_sys_fd_type *)drv_ev;
- ethr_mutex_lock(&ev->mtx);
- if (ev->msgs == NULL) {
- ethr_mutex_unlock(&ev->mtx);
- return NULL;
- } else {
- ErtsPollOseMsgList *msg = ev->msgs;
- union SIGNAL *sig = (union SIGNAL*)msg->data;
- ASSERT(msg->data);
- ev->msgs = msg->next;
- ethr_mutex_unlock(&ev->mtx);
- erts_free(ERTS_ALC_T_FD_SIG_LIST,msg);
- restore(sig);
- return sig;
- }
-}
-
-ErlDrvEvent
-erl_drv_ose_event_alloc(SIGSELECT signo, ErlDrvOseEventId id,
- ErlDrvOseEventId (*resolve_signal)(union SIGNAL *sig), void *extra) {
- struct erts_sys_fd_type *ev = erts_alloc(ERTS_ALC_T_DRV_EV,
- sizeof(struct erts_sys_fd_type));
- ev->signo = signo;
- ev->extra = extra;
- ev->id = id;
- ev->msgs = NULL;
- ev->resolve_signal = resolve_signal;
- ethr_mutex_init(&ev->mtx);
- return (ErlDrvEvent)ev;
-}
-
-void erl_drv_ose_event_free(ErlDrvEvent drv_ev) {
- struct erts_sys_fd_type *ev = (struct erts_sys_fd_type *)drv_ev;
- ASSERT(ev->msgs == NULL);
- ethr_mutex_destroy(&ev->mtx);
- erts_free(ERTS_ALC_T_DRV_EV,ev);
-}
-
-void erl_drv_ose_event_fetch(ErlDrvEvent drv_ev, SIGSELECT *signo,
- ErlDrvOseEventId *id, void **extra) {
- struct erts_sys_fd_type *ev = (struct erts_sys_fd_type *)drv_ev;
- if (signo)
- *signo = ev->signo;
- if (extra)
- *extra = ev->extra;
- if (id)
- *id = ev->id;
-}
diff --git a/erts/emulator/sys/ose/erts.sig b/erts/emulator/sys/ose/erts.sig
deleted file mode 100644
index 78b883ee6c..0000000000
--- a/erts/emulator/sys/ose/erts.sig
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef ERTS_OSE_SIGNALS
-#define ERTS_OSE_SIGNALS
-
-#ifndef ERTS_OSE_SIGNAL_BASE
-#define ERTS_OSE_SIGNAL_BASE 0x01900280
-#endif
-
-#define ERTS_SIGNAL_INVALID ERTS_OSE_SIGNAL_BASE
-#define ERTS_SIGNAL_FD_DRV_CONFIG ERTS_OSE_SIGNAL_BASE+1
-#define ERTS_SIGNAL_FD_DRV_ASYNC ERTS_OSE_SIGNAL_BASE+2
-#define ERTS_SIGNAL_OSE_DRV_ATTACH ERTS_OSE_SIGNAL_BASE+3
-#define ERTS_SIGNAL_OSE_DRV_HUNT ERTS_OSE_SIGNAL_BASE+4
-
-#define ERTS_SIGNAL_RUN_ERL_SETUP ERTS_OSE_SIGNAL_BASE+100
-#define ERTS_SIGNAL_RUN_ERL_DAEMON ERTS_OSE_SIGNAL_BASE+101
-
-#endif
diff --git a/erts/emulator/sys/ose/gcc_4.4.3_lm_ppc.lcf b/erts/emulator/sys/ose/gcc_4.4.3_lm_ppc.lcf
deleted file mode 100644
index a19d23facf..0000000000
--- a/erts/emulator/sys/ose/gcc_4.4.3_lm_ppc.lcf
+++ /dev/null
@@ -1,182 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013-2014 by Enea Software AB,
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- ******************************************************************************/
-
-OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
-OUTPUT_ARCH("powerpc")
-ENTRY("crt0_lm")
-MEMORY
-{
- rom : ORIGIN = 0x01000000, LENGTH = 0x01000000
- ram : ORIGIN = 0x02000000, LENGTH = 0x01000000
-}
-PHDRS
-{
- ph_conf PT_LOAD ;
- ph_rom PT_LOAD ;
- ph_ram PT_LOAD ;
-}
-SECTIONS
-{
- .text :
- {
- *(.text_first)
- *(.text)
- *(.text.*)
- *(.stub)
- *(oscode)
- *(.init*)
- *(.fini*)
- *(.gnu.warning)
- *(.gnu.linkonce.t.*)
- *(.glue_7t)
- *(.glue_7)
- } > rom :ph_rom = 0
- .ose_sfk_biosentry :
- {
- *(.ose_sfk_biosentry)
- } > rom :ph_rom
- .ctors :
- {
- __CTOR_LIST__ = .;
- *(.ctors)
- *(SORT(.ctors.*))
- __CTOR_END__ = .;
- } > rom :ph_rom
- .dtors :
- {
- __DTOR_LIST__ = .;
- *(.dtors)
- *(SORT(.dtors.*))
- __DTOR_END__ = .;
- } > rom :ph_rom
- OSESYMS :
- {
- *(.osesyms)
- } > rom :ph_rom
- .rodata :
- {
- *(.rodata)
- *(.rodata.*)
- *(.gnu.linkonce.r.*)
- } > rom :ph_rom
- .eh_frame_hdr :
- {
- *(.eh_frame_hdr)
- } > rom :ph_rom
- .eh_frame :
- {
- __EH_FRAME_BEGIN__ = .;
- *(.eh_frame)
- LONG(0)
- __EH_FRAME_END__ = .;
- } > rom :ph_rom
- .gcc_except_table :
- {
- *(.gcc_except_table .gcc_except_table.*)
- } > rom :ph_rom
- .sdata2 :
- {
- PROVIDE (_SDA2_BASE_ = .);
- *(.sdata2)
- *(.sdata2.*)
- *(.gnu.linkonce.s2.*)
- } > rom :ph_rom
- .sbss2 :
- {
- *(.sbss2)
- *(.sbss2.*)
- *(.gnu.linkonce.sb2.*)
- } > rom :ph_rom
- LMCONF :
- {
- obj/?*?/ose_confd.o(.rodata)
- *(LMCONF)
- } > rom :ph_conf
- .data :
- {
- LONG(0xDEADBABE)
- *(.data)
- *(.data.*)
- *(.gnu.linkonce.d.*)
- SORT(CONSTRUCTORS)
- . = ALIGN(0x10);
- } > ram :ph_ram = 0
- .sdata2 :
- {
- _SDA2_BASE_ = .;
- *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
- }> ram :ph_ram
- .sdata :
- {
- PROVIDE (_SDA_BASE_ = .);
- *(.sdata)
- *(.sdata.*)
- *(.gnu.linkonce.s.*)
- } > ram :ph_ram
- .sbss :
- {
- *(.sbss)
- *(.sbss.*)
- *(.scommon)
- *(.gnu.linkonce.sb.*)
- } > ram :ph_ram
- .bss (NOLOAD) :
- {
- *(.bss)
- *(.bss.*)
- *(COMMON)
- *(.gnu.linkonce.b.*)
- *(.osvars)
- } > ram :ph_ram
- .ignore (NOLOAD) :
- {
- *(.rel.dyn)
- } > ram :ph_ram
- .debug 0 : { *(.debug) }
- .line 0 : { *(.line) }
- .debug_srcinfo 0 : { *(.debug_srcinfo) }
- .debug_sfnames 0 : { *(.debug_sfnames) }
- .debug_aranges 0 : { *(.debug_aranges) }
- .debug_pubnames 0 : { *(.debug_pubnames) }
- .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
- .debug_abbrev 0 : { *(.debug_abbrev) }
- .debug_line 0 : { *(.debug_line) }
- .debug_frame 0 : { *(.debug_frame) }
- .debug_str 0 : { *(.debug_str) }
- .debug_loc 0 : { *(.debug_loc) }
- .debug_macinfo 0 : { *(.debug_macinfo) }
- .debug_weaknames 0 : { *(.debug_weaknames) }
- .debug_funcnames 0 : { *(.debug_funcnames) }
- .debug_typenames 0 : { *(.debug_typenames) }
- .debug_varnames 0 : { *(.debug_varnames) }
-}
-__OSESYMS_START = ADDR(OSESYMS);
-__OSESYMS_END = ADDR(OSESYMS) + SIZEOF(OSESYMS);
diff --git a/erts/emulator/sys/ose/gcc_4.6.3_lm_ppc.lcf b/erts/emulator/sys/ose/gcc_4.6.3_lm_ppc.lcf
deleted file mode 100644
index 3440c2961b..0000000000
--- a/erts/emulator/sys/ose/gcc_4.6.3_lm_ppc.lcf
+++ /dev/null
@@ -1,242 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013-2014 by Enea Software AB,
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- ******************************************************************************/
-
-OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
-OUTPUT_ARCH("powerpc")
-
-ENTRY("crt0_lm")
-
-/* Note:
- * You may have to increase the length of the "rom" memory region and the
- * origin and length of the "ram" memory region below depending on the size
- * of the code and data in your load module.
- */
-
-MEMORY
-{
- conf : ORIGIN = 0x00100000, LENGTH = 0x00030000
- rom : ORIGIN = 0x01000000, LENGTH = 0x01000000
- ram : ORIGIN = 0x03000000, LENGTH = 0x01000000
-}
-
-PHDRS
-{
- ph_conf PT_LOAD ;
- ph_rom PT_LOAD ;
- ph_ram PT_LOAD ;
-}
-
-SECTIONS
-{
-/*---------------------------------------------------------------------------
- * Load module configuration area
- *-------------------------------------------------------------------------*/
-
- /* Load module configuration section. */
- LMCONF :
- {
- obj/?*?/ose_confd.o(.rodata)
- *(LMCONF)
- } > conf :ph_conf
-
-/*---------------------------------------------------------------------------
- * Read-only area
- *-------------------------------------------------------------------------*/
-
- /* Code section. */
- .text :
- {
- *(.text)
- *(.text.*)
- *(.stub)
- *(oscode)
- *(.init*)
- *(.fini*)
- *(.gnu.warning)
- *(.gnu.linkonce.t.*)
- } > rom :ph_rom = 0
-
- /* OSE symbols section. */
- OSESYMS :
- {
- *(.osesyms)
- } > rom :ph_rom
-
- /* Read-only data section. */
- .rodata :
- {
- *(.rodata)
- *(.rodata.*)
- *(.gnu.linkonce.r.*)
- } > rom :ph_rom
-
- /* C++ exception handling section. */
- .eh_frame :
- {
- __EH_FRAME_BEGIN__ = .;
- *(.eh_frame)
- LONG(0)
- __EH_FRAME_END__ = .;
- } > rom :ph_rom
-
- /* C++ exception handling section. */
- .gcc_except_table :
- {
- *(.gcc_except_table .gcc_except_table.*)
- } > rom :ph_rom
-
- /* PowerPC EABI initialized read-only data section. */
- .sdata2 :
- {
- PROVIDE (_SDA2_BASE_ = .);
- *(.sdata2)
- *(.sdata2.*)
- *(.gnu.linkonce.s2.*)
- } > rom :ph_rom
-
- /* PowerPC EABI uninitialized read-only data section. */
- .sbss2 :
- {
- *(.sbss2)
- *(.sbss2.*)
- *(.gnu.linkonce.sb2.*)
- } > rom :ph_rom
-
-/*---------------------------------------------------------------------------
- * Read-write area
- *-------------------------------------------------------------------------*/
-
- /*-------------------------------------------------------------------
- * Initialized data (copied by PM)
- *-----------------------------------------------------------------*/
-
- /* Data section. */
- .data :
- {
- *(.data)
- *(.data.*)
- *(.gnu.linkonce.d.*)
- SORT(CONSTRUCTORS)
- } > ram :ph_ram
-
- /* C++ constructor section. */
- .ctors :
- {
- __CTOR_LIST__ = .;
- *(.ctors)
- *(SORT(.ctors.*))
- __CTOR_END__ = .;
- } > ram :ph_ram
-
- /* C++ destructor section. */
- .dtors :
- {
- __DTOR_LIST__ = .;
- *(.dtors)
- *(SORT(.dtors.*))
- __DTOR_END__ = .;
- } > ram :ph_ram
-
-
- /* Small data section. */
- .sdata ALIGN(0x10) :
- {
- PROVIDE (_SDA_BASE_ = .);
- *(.sdata)
- *(.sdata.*)
- *(.gnu.linkonce.s.*)
- } > ram :ph_ram
-
- /*-------------------------------------------------------------------
- * Uninitialized data (cleared by PM)
- *-----------------------------------------------------------------*/
-
- /* Small bss section. */
- .sbss :
- {
- *(.sbss)
- *(.sbss.*)
- *(.scommon)
- *(.gnu.linkonce.sb.*)
- } > ram :ph_ram
-
- /* Bss section. */
- .bss :
- {
- *(.bss)
- *(.bss.*)
- *(COMMON)
- *(.gnu.linkonce.b.*)
- } > ram :ph_ram
-
-/*---------------------------------------------------------------------------
- * Debug information
- *-------------------------------------------------------------------------*/
-
- /*
- * Stabs debug sections.
- */
-
- .stab 0 : { *(.stab) }
- .stabstr 0 : { *(.stabstr) }
- .stab.excl 0 : { *(.stab.excl) }
- .stab.exclstr 0 : { *(.stab.exclstr) }
- .stab.index 0 : { *(.stab.index) }
- .stab.indexstr 0 : { *(.stab.indexstr) }
- .comment 0 : { *(.comment) }
-
- /*
- * DWARF debug sections.
- */
-
- /* DWARF 1 */
- .debug 0 : { *(.debug) }
- .line 0 : { *(.line) }
- /* GNU DWARF 1 extensions */
- .debug_srcinfo 0 : { *(.debug_srcinfo) }
- .debug_sfnames 0 : { *(.debug_sfnames) }
- /* DWARF 1.1 and DWARF 2 */
- .debug_aranges 0 : { *(.debug_aranges) }
- .debug_pubnames 0 : { *(.debug_pubnames) }
- /* DWARF 2 */
- .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
- .debug_abbrev 0 : { *(.debug_abbrev) }
- .debug_line 0 : { *(.debug_line) }
- .debug_frame 0 : { *(.debug_frame) }
- .debug_str 0 : { *(.debug_str) }
- .debug_loc 0 : { *(.debug_loc) }
- .debug_macinfo 0 : { *(.debug_macinfo) }
- /* SGI/MIPS DWARF 2 extensions */
- .debug_weaknames 0 : { *(.debug_weaknames) }
- .debug_funcnames 0 : { *(.debug_funcnames) }
- .debug_typenames 0 : { *(.debug_typenames) }
- .debug_varnames 0 : { *(.debug_varnames) }
-}
diff --git a/erts/emulator/sys/ose/sys.c b/erts/emulator/sys/ose/sys.c
deleted file mode 100644
index bcd0ffa0b6..0000000000
--- a/erts/emulator/sys/ose/sys.c
+++ /dev/null
@@ -1,1847 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2013. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-#include "sys/time.h"
-#include "time.h"
-#include "sys/uio.h"
-#include "termios.h"
-#include "ctype.h"
-#include "termios.h"
-
-#ifdef HAVE_FCNTL_H
-#include "fcntl.h"
-#endif
-
-#ifdef HAVE_SYS_IOCTL_H
-#include "sys/ioctl.h"
-#endif
-
-#define ERTS_WANT_BREAK_HANDLING
-#define WANT_NONBLOCKING
-#include "sys.h"
-#include "erl_thr_progress.h"
-
-#ifdef USE_THREADS
-#include "erl_threads.h"
-#endif
-
-#include "erl_mseg.h"
-
-#include "unistd.h"
-#include "efs.h"
-#include "erl_printf.h"
-#include "aio.h"
-#include "pm.h"
-#include "fcntl.h"
-
-/* Set the define to 1 to get some logging */
-#if 0
-#include "ramlog.h"
-#define LOG(output) ramlog_printf output
-#else
-#define LOG(output)
-#endif
-
-extern char **environ;
-static erts_smp_rwmtx_t environ_rwmtx;
-static PROCESS sig_proxy_pid = 0;
-
-#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
- * vector sock_sendv().
- */
-/*
- * Don't need global.h, but bif_table.h (included by bif.h),
- * won't compile otherwise
- */
-#include "global.h"
-#include "bif.h"
-
-#include "erl_sys_driver.h"
-#include "erl_check_io.h"
-#include "erl_cpu_topology.h"
-
-/* The priority for reader/writer processes */
-#define FD_PROC_PRI get_pri(current_process())
-
-typedef struct ErtsSysReportExit_ ErtsSysReportExit;
-struct ErtsSysReportExit_ {
- ErtsSysReportExit *next;
- Eterm port;
- int pid;
- int ifd;
- int ofd;
- ErlDrvEvent attach_event;
- ErlDrvEvent input_event;
- ErlDrvEvent output_event;
-};
-
-/* This data is shared by these drivers - initialized by spawn_init() */
-static struct driver_data {
- ErlDrvPort port_num;
- int ofd;
- int ifd;
- int packet_bytes;
- ErtsSysReportExit *report_exit;
- int pid;
- int alive;
- int status;
- ErlDrvEvent input_event;
- ErlDrvEvent output_event;
- struct aiocb aiocb;
- FmHandle handle;
- char *install_handle;
-} *driver_data; /* indexed by fd */
-
-struct async {
- SIGSELECT signo;
- ErlDrvTermData port;
- ErlDrvTermData proc;
- PROCESS spid;
- PROCESS target;
- Uint32 ref;
-};
-
-static ErtsSysReportExit *report_exit_list;
-static ERTS_INLINE void report_exit_status(ErtsSysReportExit *rep, int status);
-
-extern int driver_interrupt(int, int);
-extern void do_break(void);
-
-extern void erl_sys_args(int*, char**);
-
-/* The following two defs should probably be moved somewhere else */
-
-extern void erts_sys_init_float(void);
-
-extern void erl_crash_dump(char* file, int line, char* fmt, ...);
-
-#define DIR_SEPARATOR_CHAR '/'
-
-#if defined(DEBUG)
-#define ERL_BUILD_TYPE_MARKER ".debug"
-#else /* opt */
-#define ERL_BUILD_TYPE_MARKER
-#endif
-
-#define CHILD_SETUP_PROG_NAME "child_setup" ERL_BUILD_TYPE_MARKER
-
-#ifdef DEBUG
-static int debug_log = 0;
-#endif
-
-#ifdef ERTS_SMP
-static erts_smp_atomic32_t have_prepared_crash_dump;
-#define ERTS_PREPARED_CRASH_DUMP \
- ((int) erts_smp_atomic32_xchg_nob(&have_prepared_crash_dump, 1))
-#else
-static volatile int have_prepared_crash_dump;
-#define ERTS_PREPARED_CRASH_DUMP \
- (have_prepared_crash_dump++)
-#endif
-
-static erts_smp_atomic_t sys_misc_mem_sz;
-
-#if defined(ERTS_SMP)
-erts_mtx_t chld_stat_mtx;
-#endif
-
-#if defined(ERTS_SMP) /* ------------------------------------------------- */
-#define CHLD_STAT_LOCK erts_mtx_lock(&chld_stat_mtx)
-#define CHLD_STAT_UNLOCK erts_mtx_unlock(&chld_stat_mtx)
-
-#else /* ------------------------------------------------------------------- */
-#define CHLD_STAT_LOCK
-#define CHLD_STAT_UNLOCK
-static volatile int children_died;
-#endif
-
-#define SET_AIO(REQ,FD,SIZE,BUFF) \
- memset(&(REQ),0,sizeof(REQ)); \
- (REQ).aio_fildes = FD; \
- (REQ).aio_offset = FM_POSITION_CURRENT; \
- (REQ).aio_nbytes = SIZE; \
- (REQ).aio_buf = BUFF; \
- (REQ).aio_sigevent.sigev_notify = SIGEV_NONE
-
-/* the first sizeof(struct aiocb *) bytes of the write buffer
- * will contain the pointer to the aiocb struct, this needs
- * to be freed between asynchronous writes.
- * A write of 0 bytes is ignored. */
-#define WRITE_AIO(FD,SIZE,BUFF) do { \
- if (SIZE > 0) { \
- struct aiocb *write_req = driver_alloc(sizeof(struct aiocb)); \
- char *write_buff = driver_alloc((sizeof(char)*SIZE)+1+ \
- (sizeof(struct aiocb *))); \
- *(struct aiocb **)write_buff = (struct aiocb *)write_req; \
- write_buff += sizeof(struct aiocb *); \
- memcpy(write_buff,BUFF,SIZE+1); \
- SET_AIO(*write_req,FD,SIZE,write_buff); \
- if (aio_write(write_req)) \
- ramlog_printf("%s:%d: write failed with %d\n", \
- __FILE__,__LINE__,errno); \
- } \
-} while(0)
-
-/* free the write_buffer and write_req
- * created in the WRITE_AIO() request macro */
-#define FREE_AIO(ptr) do { \
- struct aiocb *aiocb_ptr; \
- char *buffer_ptr; \
- aiocb_ptr = *(struct aiocb **)((ptr)-sizeof(struct aiocb *)); \
- buffer_ptr = (((char*)ptr)-sizeof(struct aiocb *)); \
- driver_free(aiocb_ptr); \
- driver_free(buffer_ptr); \
-} while(0)
-
-#define DISPATCH_AIO(sig) do { \
- if (aio_dispatch(sig)) \
- ramlog_printf("%s:%d: dispatch failed with %d\n", \
- __FILE__,__LINE__,errno); \
- } while(0)
-
-#define AIO_PIPE_SIZE 1024
-
-/* debug print macros */
-#define DEBUG_RES 0
-
-#ifdef DEBUG_RES
-#define DEBUG_CHECK_RES(actual, expected) \
- do { \
- if (actual != expected ) { \
- ramlog_printf("Result check failed" \
- " got: 0x%08x expected:0x%08x\nat: %s:%d\n", \
- actual, expected, __FILE__, __LINE__); \
- abort(); /* This might perhaps be too harsh? */ \
- } \
- } while(0)
-#else
-#define DEBUG_CHECK_RES
-#endif
-
-static struct fd_data {
- char pbuf[4]; /* hold partial packet bytes */
- int psz; /* size of pbuf */
- char *buf;
- char *cpos;
- int sz;
- int remain; /* for input on fd */
-} *fd_data; /* indexed by fd */
-
-/********************* General functions ****************************/
-
-/* This is used by both the drivers and general I/O, must be set early */
-static int max_files = -1;
-
-/*
- * a few variables used by the break handler
- */
-#ifdef ERTS_SMP
-erts_smp_atomic32_t erts_break_requested;
-#define ERTS_SET_BREAK_REQUESTED \
- erts_smp_atomic32_set_nob(&erts_break_requested, (erts_aint32_t) 1)
-#define ERTS_UNSET_BREAK_REQUESTED \
- erts_smp_atomic32_set_nob(&erts_break_requested, (erts_aint32_t) 0)
-#else
-volatile int erts_break_requested = 0;
-#define ERTS_SET_BREAK_REQUESTED (erts_break_requested = 1)
-#define ERTS_UNSET_BREAK_REQUESTED (erts_break_requested = 0)
-#endif
-/* set early so the break handler has access to initial mode */
-static struct termios initial_tty_mode;
-static int replace_intr = 0;
-/* assume yes initially, ttsl_init will clear it */
-int using_oldshell = 1;
-static PROCESS get_signal_proxy_pid(void);
-
-static void
-init_check_io(void)
-{
- erts_init_check_io();
- max_files = erts_check_io_max_files();
-}
-
-#ifdef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
-#define ERTS_CHK_IO_AS_INTR() erts_check_io_async_sig_interrupt()
-#else
-#define ERTS_CHK_IO_AS_INTR() erts_check_io_interrupt(1)
-#endif
-#define ERTS_CHK_IO_INTR erts_check_io_interrupt
-#define ERTS_CHK_IO_INTR_TMD erts_check_io_interrupt_timed
-#define ERTS_CHK_IO erts_check_io
-#define ERTS_CHK_IO_SZ erts_check_io_size
-
-
-void
-erts_sys_schedule_interrupt(int set)
-{
- ERTS_CHK_IO_INTR(set);
-}
-
-#ifdef ERTS_SMP
-void
-erts_sys_schedule_interrupt_timed(int set, ErtsMonotonicTime timeout_time)
-{
- ERTS_CHK_IO_INTR_TMD(set, timeout_time);
-}
-#endif
-
-Uint
-erts_sys_misc_mem_sz(void)
-{
- Uint res = ERTS_CHK_IO_SZ();
- res += erts_smp_atomic_read_mb(&sys_misc_mem_sz);
- return res;
-}
-
-/*
- * reset the terminal to the original settings on exit
- */
-void sys_tty_reset(int exit_code)
-{
- if (using_oldshell && !replace_intr) {
- SET_BLOCKING(0);
- }
- else if (isatty(0)) {
- tcsetattr(0,TCSANOW,&initial_tty_mode);
- }
-}
-
-#ifdef USE_THREADS
-
-typedef struct {
- int sched_bind_data;
-} erts_thr_create_data_t;
-
-/*
- * thr_create_prepare() is called in parent thread before thread creation.
- * Returned value is passed as argument to thr_create_cleanup().
- */
-static void *
-thr_create_prepare(void)
-{
- erts_thr_create_data_t *tcdp;
-
- tcdp = erts_alloc(ERTS_ALC_T_TMP, sizeof(erts_thr_create_data_t));
-
- tcdp->sched_bind_data = erts_sched_bind_atthrcreate_prepare();
-
- return (void *) tcdp;
-}
-
-
-/* thr_create_cleanup() is called in parent thread after thread creation. */
-static void
-thr_create_cleanup(void *vtcdp)
-{
- erts_thr_create_data_t *tcdp = (erts_thr_create_data_t *) vtcdp;
-
- erts_sched_bind_atthrcreate_parent(tcdp->sched_bind_data);
-
- erts_free(ERTS_ALC_T_TMP, tcdp);
-}
-
-static void
-thr_create_prepare_child(void *vtcdp)
-{
- erts_thr_create_data_t *tcdp = (erts_thr_create_data_t *) vtcdp;
-
-#ifdef ERTS_ENABLE_LOCK_COUNT
- erts_lcnt_thread_setup();
-#endif
-
- erts_sched_bind_atthrcreate_child(tcdp->sched_bind_data);
-}
-
-#endif /* #ifdef USE_THREADS */
-
-/* The two functions below are stolen from win_con.c
- They have to use malloc/free/realloc directly becasue
- we want to do able to do erts_printf very early on.
- */
-#define VPRINTF_BUF_INC_SIZE 128
-static erts_dsprintf_buf_t *
-grow_vprintf_buf(erts_dsprintf_buf_t *dsbufp, size_t need)
-{
- char *buf;
- size_t size;
-
- ASSERT(dsbufp);
-
- if (!dsbufp->str) {
- size = (((need + VPRINTF_BUF_INC_SIZE - 1)
- / VPRINTF_BUF_INC_SIZE)
- * VPRINTF_BUF_INC_SIZE);
- buf = (char *) malloc(size * sizeof(char));
- }
- else {
- size_t free_size = dsbufp->size - dsbufp->str_len;
-
- if (need <= free_size)
- return dsbufp;
-
- size = need - free_size + VPRINTF_BUF_INC_SIZE;
- size = (((size + VPRINTF_BUF_INC_SIZE - 1)
- / VPRINTF_BUF_INC_SIZE)
- * VPRINTF_BUF_INC_SIZE);
- size += dsbufp->size;
- buf = (char *) realloc((void *) dsbufp->str,
- size * sizeof(char));
- }
- if (!buf)
- return NULL;
- if (buf != dsbufp->str)
- dsbufp->str = buf;
- dsbufp->size = size;
- return dsbufp;
-}
-
-static int erts_sys_ramlog_printf(char *format, va_list arg_list)
-{
- int res,i;
- erts_dsprintf_buf_t dsbuf = ERTS_DSPRINTF_BUF_INITER(grow_vprintf_buf);
- res = erts_vdsprintf(&dsbuf, format, arg_list);
- if (res >= 0) {
- for (i = 0; i < dsbuf.str_len; i+= 50)
- /* We print 50 characters at a time because otherwise
- the ramlog looks broken */
- ramlog_printf("%.*s",dsbuf.str_len-50 < 0?dsbuf.str_len:50,dsbuf.str+i);
- }
- if (dsbuf.str)
- free((void *) dsbuf.str);
- return res;
-}
-
-void
-erts_sys_pre_init(void)
-{
- erts_printf_add_cr_to_stdout = 1;
- erts_printf_add_cr_to_stderr = 1;
-#ifdef USE_THREADS
- {
- erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
-
- eid.thread_create_child_func = thr_create_prepare_child;
- /* Before creation in parent */
- eid.thread_create_prepare_func = thr_create_prepare;
- /* After creation in parent */
- eid.thread_create_parent_func = thr_create_cleanup,
-
- erts_thr_init(&eid);
-
- report_exit_list = NULL;
-
-#ifdef ERTS_ENABLE_LOCK_COUNT
- erts_lcnt_init();
-#endif
-
-#if defined(ERTS_SMP)
- erts_mtx_init(&chld_stat_mtx, "child_status");
-#endif
- }
-#ifdef ERTS_SMP
- erts_smp_atomic32_init_nob(&erts_break_requested, 0);
- erts_smp_atomic32_init_nob(&have_prepared_crash_dump, 0);
-#else
- erts_break_requested = 0;
- have_prepared_crash_dump = 0;
-#endif
-#if !defined(ERTS_SMP)
- children_died = 0;
-#endif
-#endif /* USE_THREADS */
-
- erts_printf_stdout_func = erts_sys_ramlog_printf;
-
- erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0);
-}
-
-void
-erl_sys_init(void)
-{
-
-#ifdef USE_SETLINEBUF
- setlinebuf(stdout);
-#else
- setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
-#endif
-
- erts_sys_init_float();
-
- /* we save this so the break handler can set and reset it properly */
- /* also so that we can reset on exit (break handler or not) */
- if (isatty(0)) {
- tcgetattr(0,&initial_tty_mode);
- }
- tzset(); /* Required at least for NetBSD with localtime_r() */
-}
-
-static ERTS_INLINE int
-prepare_crash_dump(int secs)
-{
-#define NUFBUF (3)
- int i, max;
- char env[21]; /* enough to hold any 64-bit integer */
- size_t envsz;
- /*DeclareTmpHeapNoproc(heap,NUFBUF);*/
- /*Eterm *hp = heap;*/
- /*Eterm list = NIL;*/
- int has_heart = 0;
-
- UseTmpHeapNoproc(NUFBUF);
-
- if (ERTS_PREPARED_CRASH_DUMP)
- return 0; /* We have already been called */
-
-
- /* Positive secs means an alarm must be set
- * 0 or negative means no alarm
- *
- * Set alarm before we try to write to a port
- * we don't want to hang on a port write with
- * no alarm.
- *
- */
-
-#if 0 /*ose TBD!!!*/
- if (secs >= 0) {
- alarm((unsigned int)secs);
- }
-#endif
-
- /* Make sure we unregister at epmd (unknown fd) and get at least
- one free filedescriptor (for erl_crash.dump) */
-
- max = max_files;
- if (max < 1024)
- max = 1024;
- for (i = 3; i < max; i++) {
- close(i);
- }
-
- envsz = sizeof(env);
- i = erts_sys_getenv__("ERL_CRASH_DUMP_NICE", env, &envsz);
- if (i >= 0) {
- int nice_val;
- nice_val = i != 0 ? 0 : atoi(env);
- if (nice_val > 39) {
- nice_val = 39;
- }
- set_pri(nice_val);
- }
-
- UnUseTmpHeapNoproc(NUFBUF);
-#undef NUFBUF
- return has_heart;
-}
-
-int erts_sys_prepare_crash_dump(int secs)
-{
- return prepare_crash_dump(secs);
-}
-
-static ERTS_INLINE void
-break_requested(void)
-{
- /*
- * just set a flag - checked for and handled by
- * scheduler threads erts_check_io() (not signal handler).
- */
-#ifdef DEBUG
- fprintf(stderr,"break!\n");
-#endif
- if (ERTS_BREAK_REQUESTED)
- erl_exit(ERTS_INTR_EXIT, "");
-
- ERTS_SET_BREAK_REQUESTED;
- ERTS_CHK_IO_AS_INTR(); /* Make sure we don't sleep in poll */
-}
-
-/* Disable break */
-void erts_set_ignore_break(void) {
-
-}
-
-/* Don't use ctrl-c for break handler but let it be
- used by the shell instead (see user_drv.erl) */
-void erts_replace_intr(void) {
- struct termios mode;
-
- if (isatty(0)) {
- tcgetattr(0, &mode);
-
- /* here's an example of how to replace ctrl-c with ctrl-u */
- /* mode.c_cc[VKILL] = 0;
- mode.c_cc[VINTR] = CKILL; */
-
- mode.c_cc[VINTR] = 0; /* disable ctrl-c */
- tcsetattr(0, TCSANOW, &mode);
- replace_intr = 1;
- }
-}
-
-void init_break_handler(void)
-{
-
-}
-
-int sys_max_files(void)
-{
- return(max_files);
-}
-
-
-/************************** OS info *******************************/
-
-/* Used by erlang:info/1. */
-/* (This code was formerly in drv.XXX/XXX_os_drv.c) */
-
-char os_type[] = "ose";
-
-void
-os_flavor(char* namebuf, /* Where to return the name. */
- unsigned size) /* Size of name buffer. */
-{
-#if 0
- struct utsname uts; /* Information about the system. */
- char* s;
-
- (void) uname(&uts);
- for (s = uts.sysname; *s; s++) {
- if (isupper((int) *s)) {
- *s = tolower((int) *s);
- }
- }
- strcpy(namebuf, uts.sysname);
-#else
- strncpy(namebuf, "release", size);
-#endif
-}
-
-void
-os_version(pMajor, pMinor, pBuild)
-int* pMajor; /* Pointer to major version. */
-int* pMinor; /* Pointer to minor version. */
-int* pBuild; /* Pointer to build number. */
-{
- *pMajor = 5;
- *pMinor = 7;
- *pBuild = 0;
-}
-
-void init_getenv_state(GETENV_STATE *state)
-{
- erts_smp_rwmtx_rlock(&environ_rwmtx);
- *state = NULL;
-}
-
-char **environ; /*ose - needs replacement*/
-
-char *getenv_string(GETENV_STATE *state0)
-{
- char **state = (char **) *state0;
- char *cp;
-
- ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
-
- if (state == NULL)
- state = environ;
-
- cp = *state++;
- *state0 = (GETENV_STATE) state;
-
- return cp;
-}
-
-void fini_getenv_state(GETENV_STATE *state)
-{
- *state = NULL;
- erts_smp_rwmtx_runlock(&environ_rwmtx);
-}
-
-
-/************************** Port I/O *******************************/
-
-/* I. Common stuff */
-
-union SIGNAL {
- SIGSELECT sig_no;
- struct FmReadPtr fm_read_reply;
- struct FmWritePtr fm_write_reply;
- struct async async;
-};
-
-/* II. The spawn/fd drivers */
-
-/*
- * Decreasing the size of it below 16384 is not allowed.
- */
-#define ERTS_SYS_READ_BUF_SZ (64*1024)
-
-/* Driver interfaces */
-static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
-static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
-static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
- char **, ErlDrvSizeT);
-static int spawn_init(void);
-static void fd_stop(ErlDrvData);
-static void erl_stop(ErlDrvData);
-static void ready_input(ErlDrvData, ErlDrvEvent);
-static void ready_output(ErlDrvData, ErlDrvEvent);
-static void output(ErlDrvData, char*, ErlDrvSizeT);
-static void stop_select(ErlDrvEvent, void*);
-
-static PROCESS
-get_signal_proxy_pid(void) {
- union SIGNAL *sig;
- SIGSELECT any_sig[] = {1,ERTS_SIGNAL_OSE_DRV_ATTACH};
-
- if (!sig_proxy_pid) {
- sig = alloc(sizeof(union SIGNAL), ERTS_SIGNAL_OSE_DRV_ATTACH);
- hunt("ose_signal_driver_proxy", 0, NULL, &sig);
- sig = receive(any_sig);
- sig_proxy_pid = sender(&sig);
- free_buf(&sig);
- }
- ASSERT(sig_proxy_pid);
- return sig_proxy_pid;
-}
-
-static ErlDrvOseEventId
-resolve_signal(union SIGNAL* sig) {
- switch(sig->sig_no) {
-
- case FM_READ_PTR_REPLY:
- return (ErlDrvOseEventId)sig->fm_read_reply.handle;
-
- case FM_WRITE_PTR_REPLY:
- return (ErlDrvOseEventId)sig->fm_write_reply.handle;
-
- case ERTS_SIGNAL_OSE_DRV_ATTACH:
- return (ErlDrvOseEventId)sig->async.target;
-
- default:
- break;
- }
- return (ErlDrvOseEventId)-1;
-}
-
-struct erl_drv_entry spawn_driver_entry = {
- spawn_init,
- spawn_start,
- NULL, /* erl_stop, */
- output,
- ready_input,
- ready_output,
- "spawn",
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- ERL_DRV_FLAG_USE_PORT_LOCKING,
- NULL, NULL,
- stop_select
-};
-struct erl_drv_entry fd_driver_entry = {
- NULL,
- fd_start,
- fd_stop,
- output,
- ready_input,
- ready_output,
- "fd",
- NULL,
- NULL,
- fd_control,
- NULL,
- NULL,
- NULL, /* ready_async */
- NULL, /* flush */
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- 0, /* ERL_DRV_FLAGs */
- NULL, /* handle2 */
- NULL, /* process_exit */
- stop_select
-};
-
-static void
-set_spawn_fd(int local_fd, int remote_fd, PROCESS remote_pid) {
- PROCESS vm_pid;
- FmHandle handle;
- char env_val[55];
- char env_name[10];
- EfsStatus efs_res;
-
- /* get pid of pipevm and handle of chosen fd */
- efs_res = efs_examine_fd(local_fd, FLIB_FD_VMPID, &vm_pid, 0);
- DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
-
- /* setup the file descriptor to buffer per line */
- efs_res = efs_config_fd(local_fd, FLIB_FD_BUFMODE, FM_BUFF_LINE,
- FLIB_FD_BUFSIZE, 80, 0);
- DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
-
- /* duplicate handle and set spawn pid owner */
- efs_res = efs_dup_to(local_fd, remote_pid, &handle);
- DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
-
- sprintf(env_name, "FD%d", remote_fd);
-
- /* Syntax of the environment variable:
- * "FD#" "<pid of pipevm>,<handle>,<buffer mode>,<buff size>,<omode>" */
- sprintf(env_val, "0x%lx,0x%lx,%lu,%lu,0x%x",
- vm_pid, handle,
- FM_BUFF_LINE, 80,
- O_APPEND);
-
- set_env(remote_pid, env_name, env_val);
-}
-
-static ErlDrvData
-set_driver_data(ErlDrvPort port_num,
- int ifd,
- int ofd,
- int packet_bytes,
- int read_write,
- int exit_status,
- PROCESS pid)
-{
- Port *prt;
- ErtsSysReportExit *report_exit;
-
- prt = erts_drvport2port(port_num);
- if (prt != ERTS_INVALID_ERL_DRV_PORT) {
- prt->os_pid = pid;
- }
-
- /* READ */
- if (read_write & DO_READ) {
- EfsStatus res = efs_examine_fd(ifd, FLIB_FD_HANDLE,
- &driver_data[ifd].handle, 0);
- if (res != EFS_SUCCESS)
- ramlog_printf("%s:%d: efs_examine_fd(%d) failed with %d\n",
- __FILE__,__LINE__,ifd,errno);
- driver_data[ifd].ifd = ifd;
- driver_data[ifd].packet_bytes = packet_bytes;
- driver_data[ifd].port_num = port_num;
- driver_data[ifd].pid = pid;
-
- /* async read struct */
- memset(&driver_data[ifd].aiocb, 0, sizeof(struct aiocb));
- driver_data[ifd].aiocb.aio_buf = driver_alloc(AIO_PIPE_SIZE);
- driver_data[ifd].aiocb.aio_fildes = ifd;
- driver_data[ifd].aiocb.aio_nbytes = (packet_bytes?packet_bytes:AIO_PIPE_SIZE);
- driver_data[ifd].alive = 1;
- driver_data[ifd].status = 0;
- driver_data[ifd].input_event =
- erl_drv_ose_event_alloc(FM_READ_PTR_REPLY,
- driver_data[ifd].handle, resolve_signal,
- &driver_data[ifd].ifd);
-
- /* READ & WRITE */
- if (read_write & DO_WRITE) {
- driver_data[ifd].ofd = ofd;
- efs_examine_fd(ofd, FLIB_FD_HANDLE, &driver_data[ofd].handle, 0);
-
- driver_data[ifd].output_event =
- erl_drv_ose_event_alloc(FM_WRITE_PTR_REPLY,
- driver_data[ofd].handle, resolve_signal,
- &driver_data[ofd].ofd);
- driver_data[ofd].pid = pid;
- if (ifd != ofd) {
- driver_data[ofd] = driver_data[ifd];
- driver_data[ofd].aiocb.aio_buf = NULL;
- }
- }
- else { /* READ ONLY */
- driver_data[ifd].ofd = -1;
- }
-
- /* enable input event */
- (void) driver_select(port_num, driver_data[ifd].input_event,
- (ERL_DRV_READ | ERL_DRV_USE), 1);
-
- if (aio_read(&driver_data[ifd].aiocb))
- ramlog_printf("%s:%d: aio_read(%d) failed with %d\n",
- __FILE__,__LINE__,ifd,errno);
- }
- else { /* WRITE ONLY */
- efs_examine_fd(ofd, FLIB_FD_HANDLE, &driver_data[ofd].handle, 0);
- driver_data[ofd].packet_bytes = packet_bytes;
- driver_data[ofd].port_num = port_num;
- driver_data[ofd].ofd = ofd;
- driver_data[ofd].pid = pid;
- driver_data[ofd].alive = 1;
- driver_data[ofd].status = 0;
- driver_data[ofd].output_event =
- erl_drv_ose_event_alloc(FM_WRITE_PTR_REPLY, driver_data[ofd].handle,
- resolve_signal, &driver_data[ofd].ofd);
- driver_data[ofd].input_event = driver_data[ofd].output_event;
- }
-
- /* this is used for spawned load modules, and is needed
- * to properly uninstall them */
- if (exit_status) {
- struct PmProgramInfo *info;
- int install_handle_size;
- union SIGNAL *sig;
- PmStatus pm_status;
- report_exit = erts_alloc(ERTS_ALC_T_PRT_REP_EXIT,
- sizeof(ErtsSysReportExit));
- report_exit->next = report_exit_list;
- report_exit->port = erts_drvport2id(port_num);
- report_exit->pid = pid;
- report_exit->ifd = (read_write & DO_READ) ? ifd : -1;
- report_exit->ofd = (read_write & DO_WRITE) ? ofd : -1;
- report_exit_list = report_exit;
- report_exit->attach_event =
- erl_drv_ose_event_alloc(ERTS_SIGNAL_OSE_DRV_ATTACH, pid,
- resolve_signal, &driver_data[ifd].ifd);
-
- /* setup ifd and ofd report exit */
- driver_data[ifd].report_exit = report_exit;
- driver_data[ofd].report_exit = report_exit;
-
- pm_status = ose_pm_program_info(pid, &info);
- DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
-
- install_handle_size = strlen(info->install_handle)+1;
- driver_data[ifd].install_handle = driver_alloc(install_handle_size);
- strcpy(driver_data[ifd].install_handle,
- info->install_handle);
-
- free_buf((union SIGNAL **)&info);
-
- sig = alloc(sizeof(struct async), ERTS_SIGNAL_OSE_DRV_ATTACH);
- sig->async.target = pid;
- send(&sig, get_signal_proxy_pid());
-
- /* this event will trigger when we receive an attach signal
- * from the recently dead load module */
- (void)driver_select(port_num,report_exit->attach_event, DO_READ, 1);
- }
- else {
- report_exit = NULL;
- }
-
- /* the return value is the pointer to the driver_data struct we created
- * in this function, it will be used in the drivers input
- * and output functions */
- return (ErlDrvData)((!(read_write & DO_READ) && read_write & DO_WRITE)
- ? &driver_data[ofd]
- : &driver_data[ifd]);
-}
-
-static int spawn_init()
-{
- int i;
-
- driver_data = (struct driver_data *)
- erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct driver_data));
-
- for (i = 0; i < max_files; i++)
- driver_data[i].pid = -1;
-
- return 1;
-}
-
-static void
-init_fd_data(int fd, ErlDrvPort port_num)
-{
- fd_data[fd].buf = NULL;
- fd_data[fd].cpos = NULL;
- fd_data[fd].remain = 0;
- fd_data[fd].sz = 0;
- fd_data[fd].psz = 0;
-}
-
-/* FIXME write a decent text on pipes on ose */
-static ErlDrvData
-spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
-{
- int ifd[2];
- int ofd[2];
- static uint32_t ticker = 1;
- PmStatus pm_status;
- OSDOMAIN domain = PM_NEW_DOMAIN;
- PROCESS progpid, mainbid, mainpid;
- char *handle = NULL;
- struct PmProgramInfo *info;
- char *args = NULL;
- char *tmp_handle;
- ErlDrvData res = (ErlDrvData)-1;
- int handle_size;
- char *ptr;
-
-
- args = driver_alloc(strlen(name)+1);
- strcpy(args, name);
- /* We need to handle name in three parts
- * - install handle (must be unique)
- * - install binary (needed for ose_pm_install_load_module())
- * - full path (as argument to the spawned applications env.var
- */
-
- /* full path including arguments */
- args = driver_alloc(strlen(name)+1);
- strcpy(args, name);
-
- /* handle path */
- tmp_handle = strrchr(name, '/');
- if (tmp_handle == NULL) {
- tmp_handle = name;
- }
- else {
- tmp_handle++;
- }
-
- /* handle args */
- ptr = strchr(tmp_handle, ' ');
- if (ptr != NULL) {
- *ptr = '\0';
- handle_size = ptr - tmp_handle;
- }
- else {
- handle_size = strlen(name)+1;
- }
-
- /* make room for ticker */
- handle_size += (ticker<10)?3:((ticker<100)?4:5);
- handle = driver_alloc(handle_size);
-
- do {
- snprintf(handle, handle_size, "%s_%d", tmp_handle, ticker);
- pm_status = ose_pm_install_load_module(0, "ELF", name, handle,
- 0, 0, NULL);
- ticker++;
- } while (pm_status == PM_EINSTALL_HANDLE_ALREADY_INSTALLED);
-
- if (pm_status != PM_SUCCESS) {
- errno = ENOSYS; /* FIXME add comment */
- return ERL_DRV_ERROR_ERRNO;
- }
-
- /* Create Program */
- pm_status = ose_pm_create_program(&domain, handle, 0, 0,
- NULL, &progpid, &mainbid);
- DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
-
- /* Get the mainpid from the newly created program */
- pm_status = ose_pm_program_info(progpid, &info);
- DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
-
- mainpid = info->main_process;
- free_buf ((union SIGNAL **)&info);
-
- /* pipevm needs to be started
- * pipe will return 0 if success, -1 if not,
- * errno will be set */
- if (pipe(ifd) != 0 || pipe(ofd) != 0) {
- DEBUG_CHECK_RES(0, -1);
- ASSERT(0);
- }
-
- /* setup driver data */
- res = set_driver_data(port_num, ofd[0], ifd[1], opts->packet_bytes,
- opts->read_write, 1 /* opts->exit_status */, progpid);
-
- /* init the fd_data array for read/write */
- init_fd_data(ofd[0], port_num);
- init_fd_data(ifd[1], port_num);
-
- /* setup additional configurations
- * for the spawned applications environment */
- if (args != NULL) {
- set_env(progpid, "ARGV", args);
- }
- set_env(mainbid, "EFS_RESOLVE_TMO", 0);
- set_spawn_fd(ifd[0], 0, mainpid);
- set_spawn_fd(ofd[1], 1, mainpid);
- set_spawn_fd(ofd[1], 2, mainpid);
-
- /* start the spawned program */
- pm_status = ose_pm_start_program(mainbid);
- DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
-
- /* close unused fd's */
- close(ifd[0]);
- close(ofd[1]);
-
- if (handle) {
- driver_free(handle);
- }
-
- return (ErlDrvData)res;
-}
-
-#define FD_DEF_HEIGHT 24
-#define FD_DEF_WIDTH 80
-/* Control op */
-#define FD_CTRL_OP_GET_WINSIZE 100
-
-static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
-{
-#ifdef TIOCGWINSZ
- struct winsize ws;
- if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
- *width = (Uint32) ws.ws_col;
- *height = (Uint32) ws.ws_row;
- return 0;
- }
-#endif
- return -1;
-}
-
-static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
- unsigned int command,
- char *buf, ErlDrvSizeT len,
- char **rbuf, ErlDrvSizeT rlen)
-{
- struct driver_data *data = (struct driver_data *)drv_data;
- char resbuff[2*sizeof(Uint32)];
- switch (command) {
- case FD_CTRL_OP_GET_WINSIZE:
- {
- Uint32 w,h;
- if (fd_get_window_size(data->ifd,&w,&h))
- return 0;
- memcpy(resbuff,&w,sizeof(Uint32));
- memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
- }
- break;
- default:
- return 0;
- }
- if (rlen < 2*sizeof(Uint32)) {
- *rbuf = driver_alloc(2*sizeof(Uint32));
- }
- memcpy(*rbuf,resbuff,2*sizeof(Uint32));
- return 2*sizeof(Uint32);
-}
-
-static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
- SysDriverOpts* opts)
-{
- ErlDrvData res;
-
- CHLD_STAT_LOCK;
- if (opts->read_write & DO_READ) {
- init_fd_data(opts->ifd, port_num);
- }
- if (opts->read_write & DO_WRITE) {
- init_fd_data(opts->ofd, port_num);
- }
- res = set_driver_data(port_num, opts->ifd, opts->ofd,
- opts->packet_bytes,
- opts->read_write, 0, -1);
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-static void clear_fd_data(int fd)
-{
- if (fd_data[fd].sz > 0) {
- erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fd_data[fd].buf);
- ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fd_data[fd].sz);
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fd_data[fd].sz);
- }
- fd_data[fd].buf = NULL;
- fd_data[fd].sz = 0;
- fd_data[fd].remain = 0;
- fd_data[fd].cpos = NULL;
- fd_data[fd].psz = 0;
-}
-
-static void nbio_stop_fd(ErlDrvPort prt, ErlDrvEvent ev)
-{
- int *fd;
- driver_select(prt,ev,DO_READ|DO_WRITE,0);
- erl_drv_ose_event_fetch(ev, NULL, NULL, (void **)&fd);
- clear_fd_data(*fd);
- SET_BLOCKING(*fd);
-}
-
-static void fd_stop(ErlDrvData drv_data) /* Does not close the fds */
-{
- struct driver_data *data = (struct driver_data *)drv_data;
-
- if (data->ofd != -1) {
- if (data->ifd != data->ofd) { /* read and write */
- nbio_stop_fd(data->port_num, data->input_event);
- nbio_stop_fd(data->port_num, data->output_event);
- }
- else { /* write only */
- nbio_stop_fd(data->port_num, data->output_event);
- }
- }
- else { /* read only */
- nbio_stop_fd(data->port_num, data->input_event);
- }
-}
-
-
-static void erl_stop(ErlDrvData drv_data)
-{
- struct driver_data *data = (struct driver_data *)drv_data;
-
- CHLD_STAT_LOCK;
- data->pid = -1;
- CHLD_STAT_UNLOCK;
-
- if (data->ofd != -1) {
- if (data->ifd != data->ofd) { /* read and write */
- nbio_stop_fd(data->port_num, data->input_event);
- nbio_stop_fd(data->port_num, data->output_event);
- }
- else { /* write only */
- nbio_stop_fd(data->port_num, data->output_event);
- }
- }
- else { /* read only */
- nbio_stop_fd(data->port_num, data->input_event);
- }
- close(data->ifd);
- close(data->ofd);
-}
-
-/* The parameter e is a pointer to the driver_data structure
- * related to the fd to be used as output */
-static void output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
-{
- ErlDrvSizeT sz;
- char lb[4];
- char* lbp;
- struct driver_data *data = (struct driver_data *)drv_data;
-
- if (((data->packet_bytes == 2) &&
- (len > 0xffff)) || (data->packet_bytes == 1 && len > 0xff)) {
- driver_failure_posix(data->port_num, EINVAL);
- return; /* -1; */
- }
- put_int32(len, lb);
- lbp = lb + (4-(data->packet_bytes));
-
- if ((sz = driver_sizeq(data->port_num)) > 0) {
- if (data->packet_bytes != 0) {
- driver_enq(data->port_num, lbp, data->packet_bytes);
- }
- driver_enq(data->port_num, buf, len);
-
- if (sz + len + data->packet_bytes >= (1 << 13))
- set_busy_port(data->port_num, 1);
- }
- else {
- char *pbbuf;
- if (data->packet_bytes != 0) {
- pbbuf = malloc(len + data->packet_bytes);
- int i;
- for (i = 0; i < data->packet_bytes; i++) {
- *pbbuf++ = *lbp++;
- }
- strncpy(pbbuf, buf, len);
- pbbuf -= data->packet_bytes;
- }
- driver_select(data->port_num, data->output_event,
- ERL_DRV_WRITE|ERL_DRV_USE, 1);
- WRITE_AIO(data->ofd,
- (data->packet_bytes ? len+data->packet_bytes : len),
- (data->packet_bytes ? pbbuf : buf));
- if (data->packet_bytes != 0) free(pbbuf);
- }
- return; /* 0; */
-}
-
-/* This function is being run when we in recieve
- * either a read of 0 bytes, or the attach signal from a dying
- * spawned load module */
-static int port_inp_failure(ErlDrvPort port_num, ErlDrvEvent ready_fd, int res)
- /* Result: 0 (eof) or -1 (error) */
-{
- int *fd;
- SIGSELECT sig_no;
- ASSERT(res <= 0);
-
- erl_drv_ose_event_fetch(ready_fd,&sig_no, NULL, (void **)&fd);
- /* As we need to handle two signals, we do this in two steps */
- if (driver_data[*fd].alive) {
- report_exit_status(driver_data[*fd].report_exit, 0); /* status? */
- }
- else {
- driver_select(port_num,ready_fd,DO_READ|DO_WRITE,0);
- clear_fd_data(*fd);
- driver_report_exit(driver_data[*fd].port_num, driver_data[*fd].status);
- /* As we do not really know if the spawn has crashed or exited nicely
- * we do not check the result status of the following call.. FIXME
- * can we handle this in a better way? */
- ose_pm_uninstall_load_module(driver_data[*fd].install_handle);
- driver_free(driver_data[*fd].install_handle);
- driver_free((void *)driver_data[*fd].aiocb.aio_buf);
-
- close(*fd);
- }
-
- return 0;
-}
-
-/* The parameter e is a pointer to the driver_data structure
- * related to the fd to be used as output.
- * ready_fd is the event that triggered this call to ready_input */
-static void ready_input(ErlDrvData drv_data, ErlDrvEvent ready_fd)
-{
- int res;
- Uint h;
- char *buf;
- union SIGNAL *sig;
- struct driver_data *data = (struct driver_data *)drv_data;
-
- sig = erl_drv_ose_get_signal(ready_fd);
- ASSERT(sig);
-
-
- while (sig) {
- /* If we've recieved an attach signal, we need to handle
- * it in port_inp_failure */
- if (sig->sig_no == ERTS_SIGNAL_OSE_DRV_ATTACH) {
- port_inp_failure(data->port_num, ready_fd, 0);
- }
- else {
- res = sig->fm_read_reply.actual;
- if (res == 0) {
- port_inp_failure(data->port_num, ready_fd, res);
- break;
- }
-
- if (data->packet_bytes == 0) {
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
- port_inp_failure(data->port_num, ready_fd, res);
- }
- }
- else if (res == 0) {
- /* read of 0 bytes, eof, otherside of pipe is assumed dead */
- port_inp_failure(data->port_num, ready_fd, res);
- break;
- }
- else {
- buf = driver_alloc(res);
- memcpy(buf, (void *)data->aiocb.aio_buf, res);
- driver_select(data->port_num, data->output_event,
- ERL_DRV_WRITE|ERL_DRV_USE, 1);
- driver_output(data->port_num, (char*) buf, res);
- driver_free(buf);
- }
- /* clear the previous read */
- memset(data->aiocb.aio_buf, 0, res);
-
- /* issue a new read */
- DISPATCH_AIO(sig);
- aio_read(&data->aiocb);
- }
- else if (data->packet_bytes && fd_data[data->ifd].remain > 0) {
- /* we've read a partial package, or a header */
-
- if (res == fd_data[data->ifd].remain) { /* we are done! */
- char *buf = data->aiocb.aio_buf;
- int i;
-
- /* do we have anything buffered? */
- if (fd_data[data->ifd].buf != NULL) {
- memcpy(fd_data[data->ifd].buf + fd_data[data->ifd].sz,
- buf, res);
- buf = fd_data[data->ifd].buf;
- }
-
- fd_data[data->ifd].sz += res;
- driver_output(data->port_num, buf, (fd_data[data->ifd].sz>0?fd_data[data->ifd].sz:res));
- clear_fd_data(data->ifd);
-
- /* clear the previous read */
- memset(data->aiocb.aio_buf, 0, res);
-
- /* issue a new read */
- DISPATCH_AIO(sig);
- data->aiocb.aio_nbytes = data->packet_bytes;
-
- if (data->aiocb.aio_buf == NULL) {
- port_inp_failure(data->port_num, ready_fd, -1);
- }
- aio_read(&data->aiocb);
- }
- else if(res < fd_data[data->ifd].remain) { /* received part of a package */
- if (fd_data[data->ifd].sz == 0) {
-
- fd_data[data->ifd].sz += res;
- memcpy(fd_data[data->ifd].buf, data->aiocb.aio_buf, res);
- fd_data[data->ifd].remain -= res;
- }
- else {
- memcpy(fd_data[data->ifd].buf + fd_data[data->ifd].sz,
- data->aiocb.aio_buf, res);
- fd_data[data->ifd].sz += res;
- fd_data[data->ifd].remain -= res;
- }
- /* clear the previous read */
- memset(data->aiocb.aio_buf, 0, res);
-
- /* issue a new read */
- DISPATCH_AIO(sig);
- data->aiocb.aio_nbytes = fd_data[data->ifd].remain;
-
- if (data->aiocb.aio_buf == NULL) {
- port_inp_failure(data->port_num, ready_fd, -1);
- }
- aio_read(&data->aiocb);
- }
- }
- else if (data->packet_bytes && fd_data[data->ifd].remain == 0) { /* we've recieved a header */
-
- /* analyze the header FIXME */
- switch (data->packet_bytes) {
- case 1: h = get_int8(data->aiocb.aio_buf); break;
- case 2: h = get_int16(data->aiocb.aio_buf); break;
- case 4: h = get_int32(data->aiocb.aio_buf); break;
- }
-
- fd_data[data->ifd].buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h + data->packet_bytes);
- fd_data[data->ifd].remain = ((h + data->packet_bytes) - res);
-
- /* clear the previous read */
- memset(data->aiocb.aio_buf, 0, data->packet_bytes);
-
- /* issue a new read */
- DISPATCH_AIO(sig);
- data->aiocb.aio_nbytes = h;
-
- if (data->aiocb.aio_buf == NULL) {
- port_inp_failure(data->port_num, ready_fd, -1);
- }
- aio_read(&data->aiocb);
- }
- }
- sig = erl_drv_ose_get_signal(ready_fd);
- }
-}
-
-
-/* The parameter e is a pointer to the driver_data structure
- * related to the fd to be used as output.
- * ready_fd is the event that triggered this call to ready_input */
-static void ready_output(ErlDrvData drv_data, ErlDrvEvent ready_fd)
-{
- SysIOVec *iov;
- int vlen;
- int res;
- union SIGNAL *sig;
- struct driver_data *data = (struct driver_data *)drv_data;
-
- sig = erl_drv_ose_get_signal(ready_fd);
- ASSERT(sig);
-
- while (sig != NULL) {
- if (sig->fm_write_reply.actual <= 0) {
- int status;
-
- status = efs_status_to_errno(sig->fm_write_reply.status);
- driver_select(data->port_num, ready_fd, ERL_DRV_WRITE, 0);
- DISPATCH_AIO(sig);
- FREE_AIO(sig->fm_write_reply.buffer);
-
- driver_failure_posix(data->port_num, status);
- }
- else { /* written bytes > 0 */
- iov = driver_peekq(data->port_num, &vlen);
- if (vlen > 0) {
- DISPATCH_AIO(sig);
- FREE_AIO(sig->fm_write_reply.buffer);
- res = driver_deq(data->port_num, iov[0].iov_len);
- if (res > 0) {
- iov = driver_peekq(data->port_num, &vlen);
- WRITE_AIO(data->ofd, iov[0].iov_len, iov[0].iov_base);
- }
- }
- else if (vlen == 0) {
- DISPATCH_AIO(sig);
- FREE_AIO(sig->fm_write_reply.buffer);
- }
-
- }
- sig = erl_drv_ose_get_signal(ready_fd);
- }
-}
-
-static void stop_select(ErlDrvEvent ready_fd, void* _)
-{
- int *fd;
- erl_drv_ose_event_fetch(ready_fd, NULL, NULL, (void **)&fd);
- erl_drv_ose_event_free(ready_fd);
- close(*fd);
-}
-
-
-void erts_do_break_handling(void)
-{
- struct termios temp_mode;
- int saved = 0;
-
- /*
- * Most functions that do_break() calls are intentionally not thread safe;
- * therefore, make sure that all threads but this one are blocked before
- * proceeding!
- */
- erts_smp_thr_progress_block();
-
- /* during break we revert to initial settings */
- /* this is done differently for oldshell */
- if (using_oldshell && !replace_intr) {
- SET_BLOCKING(1);
- }
- else if (isatty(0)) {
- tcgetattr(0,&temp_mode);
- tcsetattr(0,TCSANOW,&initial_tty_mode);
- saved = 1;
- }
-
- /* call the break handling function, reset the flag */
- do_break();
-
- fflush(stdout);
-
- /* after break we go back to saved settings */
- if (using_oldshell && !replace_intr) {
- SET_NONBLOCKING(1);
- }
- else if (saved) {
- tcsetattr(0,TCSANOW,&temp_mode);
- }
-
- erts_smp_thr_progress_unblock();
-}
-
-static pid_t
-getpid(void)
-{
- return get_bid(current_process());
-}
-
-int getpagesize(void)
-{
- return 1024;
-}
-
-
-/* Fills in the systems representation of the jam/beam process identifier.
-** The Pid is put in STRING representation in the supplied buffer,
-** no interpretatione of this should be done by the rest of the
-** emulator. The buffer should be at least 21 bytes long.
-*/
-void sys_get_pid(char *buffer, size_t buffer_size){
- pid_t p = getpid();
- /* Assume the pid is scalar and can rest in an unsigned long... */
- erts_snprintf(buffer, buffer_size, "%lu",(unsigned long) p);
-}
-
-int
-erts_sys_putenv_raw(char *key, char *value) {
- return erts_sys_putenv(key, value);
-}
-int
-erts_sys_putenv(char *key, char *value)
-{
- int res;
-
- erts_smp_rwmtx_rwlock(&environ_rwmtx);
- res = set_env(get_bid(current_process()), key,
- value);
- erts_smp_rwmtx_rwunlock(&environ_rwmtx);
- return res;
-}
-
-
-int
-erts_sys_unsetenv(char *key)
-{
- int res;
-
- erts_smp_rwmtx_rwlock(&environ_rwmtx);
- res = set_env(get_bid(current_process()),key,NULL);
- erts_smp_rwmtx_rwunlock(&environ_rwmtx);
-
- return res;
-}
-
-int
-erts_sys_getenv__(char *key, char *value, size_t *size)
-{
- int res;
- char *orig_value = get_env(get_bid(current_process()), key);
- if (!orig_value)
- res = -1;
- else {
- size_t len = sys_strlen(orig_value);
- if (len >= *size) {
- *size = len + 1;
- res = 1;
- }
- else {
- *size = len;
- sys_memcpy((void *) value, (void *) orig_value, len+1);
- res = 0;
- }
- free_buf((union SIGNAL **)&orig_value);
- }
- return res;
-}
-
-int
-erts_sys_getenv_raw(char *key, char *value, size_t *size) {
- return erts_sys_getenv(key, value, size);
-}
-
-/*
- * erts_sys_getenv
- * returns:
- * -1, if environment key is not set with a value
- * 0, if environment key is set and value fits into buffer res
- * 1, if environment key is set but does not fit into buffer res
- * res is set with the needed buffer res value
- */
-
-int
-erts_sys_getenv(char *key, char *value, size_t *size)
-{
- int res;
- erts_smp_rwmtx_rlock(&environ_rwmtx);
- res = erts_sys_getenv__(key, value, size);
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- return res;
-}
-
-void
-sys_init_io(void)
-{
- fd_data = (struct fd_data *)
- erts_alloc(ERTS_ALC_T_FD_TAB, max_files * sizeof(struct fd_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct fd_data));
-}
-
-extern const char pre_loaded_code[];
-extern Preload pre_loaded[];
-
-void erts_sys_alloc_init(void)
-{
-}
-
-void *erts_sys_alloc(ErtsAlcType_t t, void *x, Uint sz)
-{
- void *res = malloc((size_t) sz);
-#if HAVE_ERTS_MSEG
- if (!res) {
- erts_mseg_clear_cache();
- return malloc((size_t) sz);
- }
-#endif
- return res;
-}
-
-void *erts_sys_realloc(ErtsAlcType_t t, void *x, void *p, Uint sz)
-{
- void *res = realloc(p, (size_t) sz);
-#if HAVE_ERTS_MSEG
- if (!res) {
- erts_mseg_clear_cache();
- return realloc(p, (size_t) sz);
- }
-#endif
- return res;
-}
-
-void erts_sys_free(ErtsAlcType_t t, void *x, void *p)
-{
- free(p);
-}
-
-/* Return a pointer to a vector of names of preloaded modules */
-
-Preload*
-sys_preloaded(void)
-{
- return pre_loaded;
-}
-
-/* Return a pointer to preloaded code for module "module" */
-unsigned char*
-sys_preload_begin(Preload* p)
-{
- return p->code;
-}
-
-/* Clean up if allocated */
-void sys_preload_end(Preload* p)
-{
- /* Nothing */
-}
-
-/* Read a key from console (?) */
-
-int sys_get_key(fd)
-int fd;
-{
- int c;
- unsigned char rbuf[64];
-
- fflush(stdout); /* Flush query ??? */
-
- if ((c = read(fd,rbuf,64)) <= 0) {
- return c;
- }
-
- return rbuf[0];
-}
-
-
-#ifdef DEBUG
-
-extern int erts_initialized;
-void
-erl_assert_error(const char* expr, const char* func,
- const char* file, int line)
-{
- fflush(stdout);
- fprintf(stderr, "%s:%d:%s() Assertion failed: %s\n",
- file, line, func, expr);
- fflush(stderr);
- ramlog_printf("%s:%d:%s() Assertion failed: %s\n",
- file, line, func, expr);
-
- abort();
-}
-
-void
-erl_debug(char* fmt, ...)
-{
- char sbuf[1024]; /* Temporary buffer. */
- va_list va;
-
- if (debug_log) {
- va_start(va, fmt);
- vsprintf(sbuf, fmt, va);
- va_end(va);
- fprintf(stderr, "%s", sbuf);
- }
-}
-
-#endif /* DEBUG */
-
-static ERTS_INLINE void
-report_exit_status(ErtsSysReportExit *rep, int status)
-{
- if (rep->ifd >= 0) {
- driver_data[rep->ifd].alive = 0;
- driver_data[rep->ifd].status = status;
- }
- if (rep->ofd >= 0) {
- driver_data[rep->ofd].alive = 0;
- driver_data[rep->ofd].status = status;
- }
-
- erts_free(ERTS_ALC_T_PRT_REP_EXIT, rep);
-}
-
-#define ERTS_REPORT_EXIT_STATUS report_exit_status
-
-/*
- * Called from schedule() when it runs out of runnable processes,
- * or when Erlang code has performed INPUT_REDUCTIONS reduction
- * steps. runnable == 0 iff there are no runnable Erlang processes.
- */
-void
-erl_sys_schedule(int runnable)
-{
- ASSERT(get_fsem(current_process()) == 0);
-#ifdef ERTS_SMP
- ASSERT(erts_get_scheduler_data()->no == 1);
- ERTS_CHK_IO(!runnable);
-#else
- ERTS_CHK_IO( 1 );
-#endif
- ASSERT(get_fsem(current_process()) == 0);
- ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking());
-}
-
-
-#ifdef ERTS_SMP
-
-void
-erts_sys_main_thread(void)
-{
- erts_thread_disable_fpe();
-
- /* Become signal receiver thread... */
-#ifdef ERTS_ENABLE_LOCK_CHECK
- erts_lc_set_thread_name("signal_receiver");
-#endif
-
- while (1) {
- static const SIGSELECT sigsel[] = {0};
- union SIGNAL *msg = receive(sigsel);
-
- fprintf(stderr,"Main thread got message %d from 0x%x!!\r\n",
- msg->sig_no, sender(&msg));
- free_buf(&msg);
- }
-}
-
-#endif /* ERTS_SMP */
-
-void
-erl_sys_args(int* argc, char** argv)
-{
- int i, j;
-
- erts_smp_rwmtx_init(&environ_rwmtx, "environ");
-
- init_check_io();
-
- /* Handled arguments have been marked with NULL. Slide arguments
- not handled towards the beginning of argv. */
- for (i = 0, j = 0; i < *argc; i++) {
- if (argv[i])
- argv[j++] = argv[i];
- }
- *argc = j;
-
-}
diff --git a/erts/emulator/sys/ose/sys_float.c b/erts/emulator/sys/ose/sys_float.c
deleted file mode 100644
index 3d9abc6bd1..0000000000
--- a/erts/emulator/sys/ose/sys_float.c
+++ /dev/null
@@ -1,845 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2001-2013. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "sys.h"
-#include "global.h"
-#include "erl_process.h"
-
-
-#ifdef NO_FPE_SIGNALS
-
-void
-erts_sys_init_float(void)
-{
-# ifdef SIGFPE
- sys_sigset(SIGFPE, SIG_IGN); /* Ignore so we can test for NaN and Inf */
-# endif
-}
-
-#else /* !NO_FPE_SIGNALS */
-
-#ifdef ERTS_SMP
-static erts_tsd_key_t fpe_key;
-
-/* once-only initialisation early in the main thread (via erts_sys_init_float()) */
-static void erts_init_fp_exception(void)
-{
- /* XXX: the wrappers prevent using a pthread destructor to
- deallocate the key's value; so when/where do we do that? */
- erts_tsd_key_create(&fpe_key);
-}
-
-void erts_thread_init_fp_exception(void)
-{
- unsigned long *fpe = erts_alloc(ERTS_ALC_T_FP_EXCEPTION, sizeof(*fpe));
- *fpe = 0L;
- erts_tsd_set(fpe_key, fpe);
-}
-
-static ERTS_INLINE volatile unsigned long *erts_thread_get_fp_exception(void)
-{
- return (volatile unsigned long*)erts_tsd_get(fpe_key);
-}
-#else /* !SMP */
-#define erts_init_fp_exception() /*empty*/
-static volatile unsigned long fp_exception;
-#define erts_thread_get_fp_exception() (&fp_exception)
-#endif /* SMP */
-
-volatile unsigned long *erts_get_current_fp_exception(void)
-{
- Process *c_p;
-
- c_p = erts_get_current_process();
- if (c_p)
- return &c_p->fp_exception;
- return erts_thread_get_fp_exception();
-}
-
-static void set_current_fp_exception(unsigned long pc)
-{
- volatile unsigned long *fpexnp = erts_get_current_fp_exception();
- ASSERT(fpexnp != NULL);
- *fpexnp = pc;
-}
-
-void erts_fp_check_init_error(volatile unsigned long *fpexnp)
-{
- char buf[64];
- snprintf(buf, sizeof buf, "ERTS_FP_CHECK_INIT at %p: detected unhandled FPE at %p\r\n",
- __builtin_return_address(0), (void*)*fpexnp);
- if (write(2, buf, strlen(buf)) <= 0)
- erl_exit(ERTS_ABORT_EXIT, "%s", buf);
- *fpexnp = 0;
-#if defined(__i386__) || defined(__x86_64__)
- erts_restore_fpu();
-#endif
-}
-
-/* Is there no standard identifier for Darwin/MacOSX ? */
-#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
-#define __DARWIN__ 1
-#endif
-
-#if (defined(__i386__) || defined(__x86_64__)) && defined(__GNUC__)
-
-static void unmask_x87(void)
-{
- unsigned short cw;
-
- __asm__ __volatile__("fstcw %0" : "=m"(cw));
- cw &= ~(0x01|0x04|0x08); /* unmask IM, ZM, OM */
- __asm__ __volatile__("fldcw %0" : : "m"(cw));
-}
-
-/* mask x87 FPE, return true if the previous state was unmasked */
-static int mask_x87(void)
-{
- unsigned short cw;
- int unmasked;
-
- __asm__ __volatile__("fstcw %0" : "=m"(cw));
- unmasked = (cw & (0x01|0x04|0x08)) == 0;
- /* or just set cw = 0x37f */
- cw |= (0x01|0x04|0x08); /* mask IM, ZM, OM */
- __asm__ __volatile__("fldcw %0" : : "m"(cw));
- return unmasked;
-}
-
-static void unmask_sse2(void)
-{
- unsigned int mxcsr;
-
- __asm__ __volatile__("stmxcsr %0" : "=m"(mxcsr));
- mxcsr &= ~(0x003F|0x0680); /* clear exn flags, unmask OM, ZM, IM (not PM, UM, DM) */
- __asm__ __volatile__("ldmxcsr %0" : : "m"(mxcsr));
-}
-
-/* mask SSE2 FPE, return true if the previous state was unmasked */
-static int mask_sse2(void)
-{
- unsigned int mxcsr;
- int unmasked;
-
- __asm__ __volatile__("stmxcsr %0" : "=m"(mxcsr));
- unmasked = (mxcsr & 0x0680) == 0;
- /* or just set mxcsr = 0x1f80 */
- mxcsr &= ~0x003F; /* clear exn flags */
- mxcsr |= 0x0680; /* mask OM, ZM, IM (not PM, UM, DM) */
- __asm__ __volatile__("ldmxcsr %0" : : "m"(mxcsr));
- return unmasked;
-}
-
-#if defined(__x86_64__)
-
-static inline int cpu_has_sse2(void) { return 1; }
-
-#else /* !__x86_64__ */
-
-/*
- * Check if an x86-32 processor has SSE2.
- */
-static unsigned int xor_eflags(unsigned int mask)
-{
- unsigned int eax, edx;
-
- eax = mask; /* eax = mask */
- __asm__("pushfl\n\t"
- "popl %0\n\t" /* edx = original EFLAGS */
- "xorl %0, %1\n\t" /* eax = mask ^ EFLAGS */
- "pushl %1\n\t"
- "popfl\n\t" /* new EFLAGS = mask ^ original EFLAGS */
- "pushfl\n\t"
- "popl %1\n\t" /* eax = new EFLAGS */
- "xorl %0, %1\n\t" /* eax = new EFLAGS ^ old EFLAGS */
- "pushl %0\n\t"
- "popfl" /* restore original EFLAGS */
- : "=d"(edx), "=a"(eax)
- : "1"(eax));
- return eax;
-}
-
-static __inline__ unsigned int cpuid_eax(unsigned int op)
-{
- unsigned int eax, save_ebx;
-
- /* In PIC mode i386 reserves EBX. So we must save
- and restore it ourselves to not upset gcc. */
- __asm__(
- "movl %%ebx, %1\n\t"
- "cpuid\n\t"
- "movl %1, %%ebx"
- : "=a"(eax), "=m"(save_ebx)
- : "0"(op)
- : "cx", "dx");
- return eax;
-}
-
-static __inline__ unsigned int cpuid_edx(unsigned int op)
-{
- unsigned int eax, edx, save_ebx;
-
- /* In PIC mode i386 reserves EBX. So we must save
- and restore it ourselves to not upset gcc. */
- __asm__(
- "movl %%ebx, %2\n\t"
- "cpuid\n\t"
- "movl %2, %%ebx"
- : "=a"(eax), "=d"(edx), "=m"(save_ebx)
- : "0"(op)
- : "cx");
- return edx;
-}
-
-/* The AC bit, bit #18, is a new bit introduced in the EFLAGS
- * register on the Intel486 processor to generate alignment
- * faults. This bit cannot be set on the Intel386 processor.
- */
-static __inline__ int is_386(void)
-{
- return ((xor_eflags(1<<18) >> 18) & 1) == 0;
-}
-
-/* Newer x86 processors have a CPUID instruction, as indicated by
- * the ID bit (#21) in EFLAGS being modifiable.
- */
-static __inline__ int has_CPUID(void)
-{
- return (xor_eflags(1<<21) >> 21) & 1;
-}
-
-static int cpu_has_sse2(void)
-{
- unsigned int maxlev, features;
- static int has_sse2 = -1;
-
- if (has_sse2 >= 0)
- return has_sse2;
- has_sse2 = 0;
-
- if (is_386())
- return 0;
- if (!has_CPUID())
- return 0;
- maxlev = cpuid_eax(0);
- /* Intel A-step Pentium had a preliminary version of CPUID.
- It also didn't have SSE2. */
- if ((maxlev & 0xFFFFFF00) == 0x0500)
- return 0;
- /* If max level is zero then CPUID cannot report any features. */
- if (maxlev == 0)
- return 0;
- features = cpuid_edx(1);
- has_sse2 = (features & (1 << 26)) != 0;
-
- return has_sse2;
-}
-#endif /* !__x86_64__ */
-
-static void unmask_fpe(void)
-{
- __asm__ __volatile__("fnclex");
- unmask_x87();
- if (cpu_has_sse2())
- unmask_sse2();
-}
-
-static void unmask_fpe_conditional(int unmasked)
-{
- if (unmasked)
- unmask_fpe();
-}
-
-/* mask x86 FPE, return true if the previous state was unmasked */
-static int mask_fpe(void)
-{
- int unmasked;
-
- unmasked = mask_x87();
- if (cpu_has_sse2())
- unmasked |= mask_sse2();
- return unmasked;
-}
-
-void erts_restore_fpu(void)
-{
- __asm__ __volatile__("fninit");
- unmask_x87();
- if (cpu_has_sse2())
- unmask_sse2();
-}
-
-#elif defined(__sparc__) && defined(__linux__)
-
-#if defined(__arch64__)
-#define LDX "ldx"
-#define STX "stx"
-#else
-#define LDX "ld"
-#define STX "st"
-#endif
-
-static void unmask_fpe(void)
-{
- unsigned long fsr;
-
- __asm__(STX " %%fsr, %0" : "=m"(fsr));
- fsr &= ~(0x1FUL << 23); /* clear FSR[TEM] field */
- fsr |= (0x1AUL << 23); /* enable NV, OF, DZ exceptions */
- __asm__ __volatile__(LDX " %0, %%fsr" : : "m"(fsr));
-}
-
-static void unmask_fpe_conditional(int unmasked)
-{
- if (unmasked)
- unmask_fpe();
-}
-
-/* mask SPARC FPE, return true if the previous state was unmasked */
-static int mask_fpe(void)
-{
- unsigned long fsr;
- int unmasked;
-
- __asm__(STX " %%fsr, %0" : "=m"(fsr));
- unmasked = ((fsr >> 23) & 0x1A) == 0x1A;
- fsr &= ~(0x1FUL << 23); /* clear FSR[TEM] field */
- __asm__ __volatile__(LDX " %0, %%fsr" : : "m"(fsr));
- return unmasked;
-}
-
-#elif (defined(__powerpc__) && defined(__linux__)) || (defined(__ppc__) && defined(__DARWIN__))
-
-#if defined(__linux__)
-#include <sys/prctl.h>
-
-static void set_fpexc_precise(void)
-{
- if (prctl(PR_SET_FPEXC, PR_FP_EXC_PRECISE) < 0) {
- perror("PR_SET_FPEXC");
- exit(1);
- }
-}
-
-#elif defined(__DARWIN__)
-
-#include <mach/mach.h>
-#include <pthread.h>
-
-/*
- * FE0 FE1 MSR bits
- * 0 0 floating-point exceptions disabled
- * 0 1 floating-point imprecise nonrecoverable
- * 1 0 floating-point imprecise recoverable
- * 1 1 floating-point precise mode
- *
- * Apparently:
- * - Darwin 5.5 (MacOS X <= 10.1) starts with FE0 == FE1 == 0,
- * and resets FE0 and FE1 to 0 after each SIGFPE.
- * - Darwin 6.0 (MacOS X 10.2) starts with FE0 == FE1 == 1,
- * and does not reset FE0 or FE1 after a SIGFPE.
- */
-#define FE0_MASK (1<<11)
-#define FE1_MASK (1<<8)
-
-/* a thread cannot get or set its own MSR bits */
-static void *fpu_fpe_enable(void *arg)
-{
- thread_t t = *(thread_t*)arg;
- struct ppc_thread_state state;
- unsigned int state_size = PPC_THREAD_STATE_COUNT;
-
- if (thread_get_state(t, PPC_THREAD_STATE, (natural_t*)&state, &state_size) != KERN_SUCCESS) {
- perror("thread_get_state");
- exit(1);
- }
- if ((state.srr1 & (FE1_MASK|FE0_MASK)) != (FE1_MASK|FE0_MASK)) {
-#if 1
- /* This would also have to be performed in the SIGFPE handler
- to work around the MSR reset older Darwin releases do. */
- state.srr1 |= (FE1_MASK|FE0_MASK);
- thread_set_state(t, PPC_THREAD_STATE, (natural_t*)&state, state_size);
-#else
- fprintf(stderr, "srr1 == 0x%08x, your Darwin is too old\n", state.srr1);
- exit(1);
-#endif
- }
- return NULL; /* Ok, we appear to be on Darwin 6.0 or later */
-}
-
-static void set_fpexc_precise(void)
-{
- thread_t self = mach_thread_self();
- pthread_t enabler;
-
- if (pthread_create(&enabler, NULL, fpu_fpe_enable, &self)) {
- perror("pthread_create");
- } else if (pthread_join(enabler, NULL)) {
- perror("pthread_join");
- }
-}
-
-#endif
-
-static void set_fpscr(unsigned int fpscr)
-{
- union {
- double d;
- unsigned int fpscr[2];
- } u;
-
- u.fpscr[0] = 0xFFF80000;
- u.fpscr[1] = fpscr;
- __asm__ __volatile__("mtfsf 255,%0" : : "f"(u.d));
-}
-
-static unsigned int get_fpscr(void)
-{
- union {
- double d;
- unsigned int fpscr[2];
- } u;
-
- __asm__("mffs %0" : "=f"(u.d));
- return u.fpscr[1];
-}
-
-static void unmask_fpe(void)
-{
- set_fpexc_precise();
- set_fpscr(0x80|0x40|0x10); /* VE, OE, ZE; not UE or XE */
-}
-
-static void unmask_fpe_conditional(int unmasked)
-{
- if (unmasked)
- unmask_fpe();
-}
-
-/* mask PowerPC FPE, return true if the previous state was unmasked */
-static int mask_fpe(void)
-{
- int unmasked;
-
- unmasked = (get_fpscr() & (0x80|0x40|0x10)) == (0x80|0x40|0x10);
- set_fpscr(0x00);
- return unmasked;
-}
-
-#else
-
-static void unmask_fpe(void)
-{
- fpsetmask(FP_X_INV | FP_X_OFL | FP_X_DZ);
-}
-
-static void unmask_fpe_conditional(int unmasked)
-{
- if (unmasked)
- unmask_fpe();
-}
-
-/* mask IEEE FPE, return true if previous state was unmasked */
-static int mask_fpe(void)
-{
- const fp_except unmasked_mask = FP_X_INV | FP_X_OFL | FP_X_DZ;
- fp_except old_mask;
-
- old_mask = fpsetmask(0);
- return (old_mask & unmasked_mask) == unmasked_mask;
-}
-
-#endif
-
-#if (defined(__linux__) && (defined(__i386__) || defined(__x86_64__) || defined(__sparc__) || defined(__powerpc__))) || (defined(__DARWIN__) && (defined(__i386__) || defined(__x86_64__) || defined(__ppc__))) || (defined(__FreeBSD__) && (defined(__x86_64__) || defined(__i386__))) || ((defined(__NetBSD__) || defined(__OpenBSD__)) && defined(__x86_64__)) || (defined(__sun__) && defined(__x86_64__))
-
-#if defined(__linux__) && defined(__i386__)
-#if !defined(X86_FXSR_MAGIC)
-#define X86_FXSR_MAGIC 0x0000
-#endif
-#elif defined(__FreeBSD__) && defined(__x86_64__)
-#include <sys/types.h>
-#include <machine/fpu.h>
-#elif defined(__FreeBSD__) && defined(__i386__)
-#include <sys/types.h>
-#include <machine/npx.h>
-#elif defined(__DARWIN__)
-#include <machine/signal.h>
-#elif defined(__OpenBSD__) && defined(__x86_64__)
-#include <sys/types.h>
-#include <machine/fpu.h>
-#endif
-#if !(defined(__OpenBSD__) && defined(__x86_64__))
-#include <ucontext.h>
-#endif
-#include <string.h>
-
-#if defined(__linux__) && defined(__x86_64__)
-#define mc_pc(mc) ((mc)->gregs[REG_RIP])
-#elif defined(__linux__) && defined(__i386__)
-#define mc_pc(mc) ((mc)->gregs[REG_EIP])
-#elif defined(__DARWIN__) && defined(__i386__)
-#ifdef DARWIN_MODERN_MCONTEXT
-#define mc_pc(mc) ((mc)->__ss.__eip)
-#else
-#define mc_pc(mc) ((mc)->ss.eip)
-#endif
-#elif defined(__DARWIN__) && defined(__x86_64__)
-#ifdef DARWIN_MODERN_MCONTEXT
-#define mc_pc(mc) ((mc)->__ss.__rip)
-#else
-#define mc_pc(mc) ((mc)->ss.rip)
-#endif
-#elif defined(__FreeBSD__) && defined(__x86_64__)
-#define mc_pc(mc) ((mc)->mc_rip)
-#elif defined(__FreeBSD__) && defined(__i386__)
-#define mc_pc(mc) ((mc)->mc_eip)
-#elif defined(__NetBSD__) && defined(__x86_64__)
-#define mc_pc(mc) ((mc)->__gregs[_REG_RIP])
-#elif defined(__NetBSD__) && defined(__i386__)
-#define mc_pc(mc) ((mc)->__gregs[_REG_EIP])
-#elif defined(__OpenBSD__) && defined(__x86_64__)
-#define mc_pc(mc) ((mc)->sc_rip)
-#elif defined(__sun__) && defined(__x86_64__)
-#define mc_pc(mc) ((mc)->gregs[REG_RIP])
-#endif
-
-static void fpe_sig_action(int sig, siginfo_t *si, void *puc)
-{
- ucontext_t *uc = puc;
- unsigned long pc;
-
-#if defined(__linux__)
-#if defined(__x86_64__)
- mcontext_t *mc = &uc->uc_mcontext;
- fpregset_t fpstate = mc->fpregs;
- pc = mc_pc(mc);
- /* A failed SSE2 instruction will restart. To avoid
- looping we mask SSE2 exceptions now and unmask them
- again later in erts_check_fpe()/erts_restore_fpu().
- On RISCs we update PC to skip the failed instruction,
- but the ever increasing complexity of the x86 instruction
- set encoding makes that a poor solution here. */
- fpstate->mxcsr = 0x1F80;
- fpstate->swd &= ~0xFF;
-#elif defined(__i386__)
- mcontext_t *mc = &uc->uc_mcontext;
- fpregset_t fpstate = mc->fpregs;
- pc = mc_pc(mc);
- if ((fpstate->status >> 16) == X86_FXSR_MAGIC)
- ((struct _fpstate*)fpstate)->mxcsr = 0x1F80;
- fpstate->sw &= ~0xFF;
-#elif defined(__sparc__) && defined(__arch64__)
- /* on SPARC the 3rd parameter points to a sigcontext not a ucontext */
- struct sigcontext *sc = (struct sigcontext*)puc;
- pc = sc->sigc_regs.tpc;
- sc->sigc_regs.tpc = sc->sigc_regs.tnpc;
- sc->sigc_regs.tnpc += 4;
-#elif defined(__sparc__)
- /* on SPARC the 3rd parameter points to a sigcontext not a ucontext */
- struct sigcontext *sc = (struct sigcontext*)puc;
- pc = sc->si_regs.pc;
- sc->si_regs.pc = sc->si_regs.npc;
- sc->si_regs.npc = (unsigned long)sc->si_regs.npc + 4;
-#elif defined(__powerpc__)
-#if defined(__powerpc64__)
- mcontext_t *mc = &uc->uc_mcontext;
- unsigned long *regs = &mc->gp_regs[0];
-#else
- mcontext_t *mc = uc->uc_mcontext.uc_regs;
- unsigned long *regs = &mc->gregs[0];
-#endif
- pc = regs[PT_NIP];
- regs[PT_NIP] += 4;
- regs[PT_FPSCR] = 0x80|0x40|0x10; /* VE, OE, ZE; not UE or XE */
-#endif
-#elif defined(__DARWIN__) && (defined(__i386__) || defined(__x86_64__))
-#ifdef DARWIN_MODERN_MCONTEXT
- mcontext_t mc = uc->uc_mcontext;
- pc = mc_pc(mc);
- mc->__fs.__fpu_mxcsr = 0x1F80;
- *(unsigned short *)&mc->__fs.__fpu_fsw &= ~0xFF;
-#else
- mcontext_t mc = uc->uc_mcontext;
- pc = mc_pc(mc);
- mc->fs.fpu_mxcsr = 0x1F80;
- *(unsigned short *)&mc->fs.fpu_fsw &= ~0xFF;
-#endif /* DARWIN_MODERN_MCONTEXT */
-#elif defined(__DARWIN__) && defined(__ppc__)
- mcontext_t mc = uc->uc_mcontext;
- pc = mc->ss.srr0;
- mc->ss.srr0 += 4;
- mc->fs.fpscr = 0x80|0x40|0x10;
-#elif defined(__FreeBSD__) && defined(__x86_64__)
- mcontext_t *mc = &uc->uc_mcontext;
- struct savefpu *savefpu = (struct savefpu*)&mc->mc_fpstate;
- struct envxmm *envxmm = &savefpu->sv_env;
- pc = mc_pc(mc);
- envxmm->en_mxcsr = 0x1F80;
- envxmm->en_sw &= ~0xFF;
-#elif defined(__FreeBSD__) && defined(__i386__)
- mcontext_t *mc = &uc->uc_mcontext;
- union savefpu *savefpu = (union savefpu*)&mc->mc_fpstate;
- pc = mc_pc(mc);
- if (mc->mc_fpformat == _MC_FPFMT_XMM) {
- struct envxmm *envxmm = &savefpu->sv_xmm.sv_env;
- envxmm->en_mxcsr = 0x1F80;
- envxmm->en_sw &= ~0xFF;
- } else {
- struct env87 *env87 = &savefpu->sv_87.sv_env;
- env87->en_sw &= ~0xFF;
- }
-#elif defined(__NetBSD__) && defined(__x86_64__)
- mcontext_t *mc = &uc->uc_mcontext;
- struct fxsave64 *fxsave = (struct fxsave64 *)&mc->__fpregs;
- pc = mc_pc(mc);
- fxsave->fx_mxcsr = 0x1F80;
- fxsave->fx_fsw &= ~0xFF;
-#elif defined(__NetBSD__) && defined(__i386__)
- mcontext_t *mc = &uc->uc_mcontext;
- pc = mc_pc(mc);
- if (uc->uc_flags & _UC_FXSAVE) {
- struct envxmm *envxmm = (struct envxmm *)&mc->__fpregs;
- envxmm->en_mxcsr = 0x1F80;
- envxmm->en_sw &= ~0xFF;
- } else {
- struct env87 *env87 = (struct env87 *)&mc->__fpregs;
- env87->en_sw &= ~0xFF;
- }
-#elif defined(__OpenBSD__) && defined(__x86_64__)
- struct fxsave64 *fxsave = uc->sc_fpstate;
- pc = mc_pc(uc);
- fxsave->fx_mxcsr = 0x1F80;
- fxsave->fx_fsw &= ~0xFF;
-#elif defined(__sun__) && defined(__x86_64__)
- mcontext_t *mc = &uc->uc_mcontext;
- struct fpchip_state *fpstate = &mc->fpregs.fp_reg_set.fpchip_state;
- pc = mc_pc(mc);
- fpstate->mxcsr = 0x1F80;
- fpstate->sw &= ~0xFF;
-#endif
-#if 0
- {
- char buf[64];
- snprintf(buf, sizeof buf, "%s: FPE at %p\r\n", __FUNCTION__, (void*)pc);
- write(2, buf, strlen(buf));
- }
-#endif
- set_current_fp_exception(pc);
-}
-
-static void erts_thread_catch_fp_exceptions(void)
-{
- struct sigaction act;
- memset(&act, 0, sizeof act);
- act.sa_sigaction = fpe_sig_action;
- act.sa_flags = SA_SIGINFO;
- sigaction(SIGFPE, &act, NULL);
- unmask_fpe();
-}
-
-#else /* !((__linux__ && (__i386__ || __x86_64__ || __powerpc__)) || (__DARWIN__ && (__i386__ || __x86_64__ || __ppc__))) */
-
-static void fpe_sig_handler(int sig)
-{
- set_current_fp_exception(1); /* XXX: convert to sigaction so we can get the trap PC */
-}
-
-static void erts_thread_catch_fp_exceptions(void)
-{
- sys_sigset(SIGFPE, fpe_sig_handler);
- unmask_fpe();
-}
-
-#endif /* (__linux__ && (__i386__ || __x86_64__ || __powerpc__)) || (__DARWIN__ && (__i386__ || __x86_64__ || __ppc__))) */
-
-/* once-only initialisation early in the main thread */
-void erts_sys_init_float(void)
-{
- erts_init_fp_exception();
- erts_thread_catch_fp_exceptions();
- erts_printf_block_fpe = erts_sys_block_fpe;
- erts_printf_unblock_fpe = erts_sys_unblock_fpe;
-}
-
-#endif /* NO_FPE_SIGNALS */
-
-void erts_thread_init_float(void)
-{
-#ifdef ERTS_SMP
- /* This allows Erlang schedulers to leave Erlang-process context
- and still have working FP exceptions. XXX: is this needed? */
- erts_thread_init_fp_exception();
-#endif
-
-#ifndef NO_FPE_SIGNALS
- /* NOTE:
- * erts_thread_disable_fpe() is called in all threads at
- * creation. We at least need to call unmask_fpe()
- */
-#if defined(__DARWIN__) || defined(__FreeBSD__)
- /* Darwin (7.9.0) does not appear to propagate FP exception settings
- to a new thread from its parent. So if we want FP exceptions, we
- must manually re-enable them in each new thread.
- FreeBSD 6.1 appears to suffer from a similar issue. */
- erts_thread_catch_fp_exceptions();
-#else
- unmask_fpe();
-#endif
-
-#endif
-}
-
-void erts_thread_disable_fpe(void)
-{
-#if !defined(NO_FPE_SIGNALS)
- (void)mask_fpe();
-#endif
-}
-
-#if !defined(NO_FPE_SIGNALS)
-int erts_sys_block_fpe(void)
-{
- return mask_fpe();
-}
-
-void erts_sys_unblock_fpe(int unmasked)
-{
- unmask_fpe_conditional(unmasked);
-}
-#endif
-
-/* The following check is incorporated from the Vee machine */
-
-#define ISDIGIT(d) ((d) >= '0' && (d) <= '9')
-
-/*
- ** Convert a double to ascii format 0.dddde[+|-]ddd
- ** return number of characters converted or -1 if error.
- **
- ** These two functions should maybe use localeconv() to pick up
- ** the current radix character, but since it is uncertain how
- ** expensive such a system call is, and since no-one has heard
- ** of other radix characters than '.' and ',' an ad-hoc
- ** low execution time solution is used instead.
- */
-
-int
-sys_double_to_chars_ext(double fp, char *buffer, size_t buffer_size, size_t decimals)
-{
- char *s = buffer;
-
- if (erts_snprintf(buffer, buffer_size, "%.*e", decimals, fp) >= buffer_size)
- return -1;
- /* Search upto decimal point */
- if (*s == '+' || *s == '-') s++;
- while (ISDIGIT(*s)) s++;
- if (*s == ',') *s++ = '.'; /* Replace ',' with '.' */
- /* Scan to end of string */
- while (*s) s++;
- return s-buffer; /* i.e strlen(buffer) */
-}
-
-/* Float conversion */
-
-int
-sys_chars_to_double(char* buf, double* fp)
-{
-#ifndef NO_FPE_SIGNALS
- volatile unsigned long *fpexnp = erts_get_current_fp_exception();
-#endif
- char *s = buf, *t, *dp;
-
- /* Robert says that something like this is what he really wanted:
- * (The [.,] radix test is NOT what Robert wanted - it was added later)
- *
- * 7 == sscanf(Tbuf, "%[+-]%[0-9][.,]%[0-9]%[eE]%[+-]%[0-9]%s", ....);
- * if (*s2 == 0 || *s3 == 0 || *s4 == 0 || *s6 == 0 || *s7)
- * break;
- */
-
- /* Scan string to check syntax. */
- if (*s == '+' || *s == '-') s++;
- if (!ISDIGIT(*s)) /* Leading digits. */
- return -1;
- while (ISDIGIT(*s)) s++;
- if (*s != '.' && *s != ',') /* Decimal part. */
- return -1;
- dp = s++; /* Remember decimal point pos just in case */
- if (!ISDIGIT(*s))
- return -1;
- while (ISDIGIT(*s)) s++;
- if (*s == 'e' || *s == 'E') {
- /* There is an exponent. */
- s++;
- if (*s == '+' || *s == '-') s++;
- if (!ISDIGIT(*s))
- return -1;
- while (ISDIGIT(*s)) s++;
- }
- if (*s) /* That should be it */
- return -1;
-
-#ifdef NO_FPE_SIGNALS
- errno = 0;
-#endif
- __ERTS_FP_CHECK_INIT(fpexnp);
- *fp = strtod(buf, &t);
- __ERTS_FP_ERROR_THOROUGH(fpexnp, *fp, return -1);
- if (t != s) { /* Whole string not scanned */
- /* Try again with other radix char */
- *dp = (*dp == '.') ? ',' : '.';
- errno = 0;
- __ERTS_FP_CHECK_INIT(fpexnp);
- *fp = strtod(buf, &t);
- __ERTS_FP_ERROR_THOROUGH(fpexnp, *fp, return -1);
- }
-
-#ifdef NO_FPE_SIGNALS
- if (errno == ERANGE) {
- if (*fp == HUGE_VAL || *fp == -HUGE_VAL) {
- /* overflow, should give error */
- return -1;
- } else if (t == s && *fp == 0.0) {
- /* This should give 0.0 - OTP-7178 */
- errno = 0;
-
- } else if (*fp == 0.0) {
- return -1;
- }
- }
-#endif
- return 0;
-}
-
-int
-matherr(struct exception *exc)
-{
-#if !defined(NO_FPE_SIGNALS)
- volatile unsigned long *fpexnp = erts_get_current_fp_exception();
- if (fpexnp != NULL)
- *fpexnp = (unsigned long)__builtin_return_address(0);
-#endif
- return 1;
-}
diff --git a/erts/emulator/sys/ose/sys_time.c b/erts/emulator/sys/ose/sys_time.c
deleted file mode 100644
index 5dac75956a..0000000000
--- a/erts/emulator/sys/ose/sys_time.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2005-2009. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "sys.h"
-#include "global.h"
-
-/******************* Routines for time measurement *********************/
-
-int erts_ticks_per_sec = 0; /* Will be SYS_CLK_TCK in erl_unix_sys.h */
-
-int sys_init_time(void)
-{
- return SYS_CLOCK_RESOLUTION;
-}
-
-clock_t sys_times(SysTimes *now) {
- now->tms_utime = now->tms_stime = now->tms_cutime = now->tms_cstime = 0;
- return 0;
-}
-
-static OSTICK last_tick_count = 0;
-static SysHrTime wrap = 0;
-static OSTICK us_per_tick;
-
-void sys_init_hrtime() {
- us_per_tick = system_tick();
-}
-
-SysHrTime sys_gethrtime() {
- OSTICK ticks = get_ticks();
- if (ticks < (SysHrTime) last_tick_count) {
- wrap += 1ULL << 32;
- }
- last_tick_count = ticks;
- return ((((SysHrTime) ticks) + wrap) * 1000*us_per_tick);
-}
diff --git a/erts/emulator/sys/unix/erl_child_setup.c b/erts/emulator/sys/unix/erl_child_setup.c
index a3c5c20641..8dd14bbac6 100644
--- a/erts/emulator/sys/unix/erl_child_setup.c
+++ b/erts/emulator/sys/unix/erl_child_setup.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ * Copyright Ericsson AB 2002-2015. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -19,109 +19,234 @@
*/
/*
- * After a vfork() (or fork()) the child exec()s to this program which
- * sets up the child and exec()s to the user program (see spawn_start()
- * in sys.c and ticket OTP-4389).
+ * This program is started at erts startup and all fork's that
+ * have to be done are done in here. This is done for a couple
+ * of reasons:
+ * - Allow usage of fork without a memory explosion.
+ * -- we do not want to use vfork, as it blocks the VM
+ * until the execv is done, and if the program that
+ * is to be executed is on an NFS that is unavailable,
+ * the execv can block for a very long time.
+ * -- we cannot do fork inside the VM as that would temporarily
+ * duplicate the memory usage of the VM per parallel exec.
+ *
+ * Some implementation notes:
+ * - A single Unix Domain Socket is setup in between the VM and
+ * this program. Over that UDS the file descriptors that should
+ * be used to talk to the child program are sent.
+ * The actual command to execute, together with options and the
+ * environment, is sent over the pipe represented by the
+ * file descriptors mentioned above. We don't send the
+ * command over the UDS as that would increase the likely hood
+ * that it's buffer would be full.
+ *
+ * - Since it is this program that execv's, it has to take care of
+ * all the SIGCHLD signals that the child programs generate. The
+ * signals are received and the pid+exit reason is sent as data
+ * on the UDS to the VM. The VM is then able to map the pid to the
+ * port of the child program that just exited and deliver the status
+ * code if requested.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
-#define NEED_CHILD_SETUP_DEFINES
-#include "sys.h"
-#include "erl_misc_utils.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/wait.h>
-#ifdef SIG_SIGSET /* Old SysV */
-void sys_sigrelease(int sig)
+#define WANT_NONBLOCKING
+
+#include "erl_driver.h"
+#include "sys_uds.h"
+#include "hash.h"
+#include "erl_term.h"
+#include "erl_child_setup.h"
+
+#define SET_CLOEXEC(fd) fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC)
+
+#if defined(__ANDROID__)
+#define SHELL "/system/bin/sh"
+#else
+#define SHELL "/bin/sh"
+#endif /* __ANDROID__ */
+
+//#define HARD_DEBUG
+#ifdef HARD_DEBUG
+#define DEBUG_PRINT(fmt, ...) fprintf(stderr, fmt "\r\n", ##__VA_ARGS__)
+#else
+#define DEBUG_PRINT(fmt, ...)
+#endif
+
+#define ABORT(fmt, ...) do { \
+ fprintf(stderr, "erl_child_setup: " fmt "\r\n", ##__VA_ARGS__); \
+ abort(); \
+ } while(0)
+
+#ifdef DEBUG
+void
+erl_assert_error(const char* expr, const char* func, const char* file, int line)
{
- sigrelse(sig);
+ fflush(stdout);
+ fprintf(stderr, "%s:%d:%s() Assertion failed: %s\n",
+ file, line, func, expr);
+ fflush(stderr);
+ abort();
}
-#else /* !SIG_SIGSET */
-#ifdef SIG_SIGNAL /* Old BSD */
-sys_sigrelease(int sig)
+#endif
+
+void sys_sigblock(int sig)
{
- sigsetmask(sigblock(0) & ~sigmask(sig));
+ sigset_t mask;
+
+ sigemptyset(&mask);
+ sigaddset(&mask, sig);
+ sigprocmask(SIG_BLOCK, &mask, (sigset_t *)NULL);
}
-#else /* !SIG_SIGNAL */ /* The True Way - POSIX!:-) */
+
void sys_sigrelease(int sig)
{
sigset_t mask;
-
sigemptyset(&mask);
sigaddset(&mask, sig);
sigprocmask(SIG_UNBLOCK, &mask, (sigset_t *)NULL);
}
-#endif /* !SIG_SIGNAL */
-#endif /* !SIG_SIGSET */
-
-#if defined(__ANDROID__)
-static int system_properties_fd(void);
-#endif /* __ANDROID__ */
-#if defined(__ANDROID__)
-#define SHELL "/system/bin/sh"
-#else
-#define SHELL "/bin/sh"
-#endif /* __ANDROID__ */
+static void add_os_pid_to_port_id_mapping(Eterm, pid_t);
+static Eterm get_port_id(pid_t);
+static int forker_hash_init(void);
+static int max_files = -1;
+static int sigchld_pipe[2];
-int
-main(int argc, char *argv[])
+static int
+start_new_child(int pipes[])
{
- int i, from, to;
- int erts_spawn_executable = 0;
+ int size, res, i, pos = 0;
+ char *buff, *o_buff;
+
+ char *cmd, *wd, **new_environ, **args = NULL;
+
+ Sint cnt, flags;
- /* OBSERVE!
- * Keep child setup after fork() (implemented in sys.c) up to date
- * if changes are made here.
- */
+ /* only child executes here */
- if (argc != CS_ARGV_NO_OF_ARGS) {
- if (argc < CS_ARGV_NO_OF_ARGS) {
- return 1;
- } else {
- erts_spawn_executable = 1;
- }
+ do {
+ res = read(pipes[0], (char*)&size, sizeof(size));
+ } while(res < 0 && (errno == EINTR || errno == ERRNO_BLOCK));
+
+ if (res <= 0) {
+ goto child_error;
}
- if (strcmp("false", argv[CS_ARGV_UNBIND_IX]) != 0)
- if (erts_unbind_from_cpu_str(argv[CS_ARGV_UNBIND_IX]) != 0)
- return 1;
+ buff = malloc(size);
+
+ DEBUG_PRINT("size = %d", size);
+
+ do {
+ if ((res = read(pipes[0], buff + pos, size - pos)) < 0) {
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ continue;
+ goto child_error;
+ }
+ if (res == 0) {
+ errno = EPIPE;
+ goto child_error;
+ }
+ pos += res;
+ } while(size - pos != 0);
+
+ o_buff = buff;
+
+ flags = get_int32(buff);
+ buff += sizeof(Sint32);
- for (i = 0; i < CS_ARGV_NO_OF_DUP2_OPS; i++) {
- if (argv[CS_ARGV_DUP2_OP_IX(i)][0] == '-'
- && argv[CS_ARGV_DUP2_OP_IX(i)][1] == '\0')
- break;
- if (sscanf(argv[CS_ARGV_DUP2_OP_IX(i)], "%d:%d", &from, &to) != 2)
- return 1;
- if (dup2(from, to) < 0)
- return 1;
+ DEBUG_PRINT("flags = %d", flags);
+
+ cmd = buff;
+ buff += strlen(buff) + 1;
+ if (*buff == '\0') {
+ wd = NULL;
+ } else {
+ wd = buff;
+ buff += strlen(buff) + 1;
}
+ buff++;
- if (sscanf(argv[CS_ARGV_FD_CR_IX], "%d:%d", &from, &to) != 2)
- return 1;
+ DEBUG_PRINT("wd = %s", wd);
-#if defined(HAVE_CLOSEFROM)
- closefrom(from);
-#elif defined(__ANDROID__)
- if (from <= to) {
- int spfd = system_properties_fd();
- for (i = from; i <= to; i++) {
- if (i != spfd) {
- (void) close(i);
- }
- }
+ cnt = get_int32(buff);
+ buff += sizeof(Sint32);
+ new_environ = malloc(sizeof(char*)*(cnt + 1));
+
+ DEBUG_PRINT("env_len = %ld", cnt);
+ for (i = 0; i < cnt; i++, buff++) {
+ new_environ[i] = buff;
+ while(*buff != '\0') buff++;
}
-#else /* !__ANDROID__ */
- for (i = from; i <= to; i++) {
- (void) close(i);
+ new_environ[cnt] = NULL;
+
+ if (o_buff + size != buff) {
+ /* This is a spawn executable call */
+ cnt = get_int32(buff);
+ buff += sizeof(Sint32);
+ args = malloc(sizeof(char*)*(cnt + 1));
+ for (i = 0; i < cnt; i++, buff++) {
+ args[i] = buff;
+ while(*buff != '\0') buff++;
+ }
+ args[cnt] = NULL;
}
-#endif /* HAVE_CLOSEFROM */
- if (!(argv[CS_ARGV_WD_IX][0] == '.' && argv[CS_ARGV_WD_IX][1] == '\0')
- && chdir(argv[CS_ARGV_WD_IX]) < 0)
- return 1;
+ if (o_buff + size != buff) {
+ errno = EINVAL;
+ goto child_error;
+ }
+
+ DEBUG_PRINT("read ack");
+ do {
+ ErtsSysForkerProto proto;
+ res = read(pipes[0], &proto, sizeof(proto));
+ if (res > 0) {
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Ack);
+ ASSERT(res == sizeof(proto));
+ }
+ } while(res < 0 && (errno == EINTR || errno == ERRNO_BLOCK));
+ if (res < 1) {
+ errno = EPIPE;
+ goto child_error;
+ }
+
+ DEBUG_PRINT("Do that forking business: '%s'\n",cmd);
+
+ /* When the dup2'ing below is done, only
+ fd's 0, 1, 2 and maybe 3, 4 should survive the
+ exec. All other fds (i.e. the unix domain sockets
+ and stray pipe ends) should have CLOEXEC set on them
+ so they will be closed when the exec happens */
+ if (flags & FORKER_FLAG_USE_STDIO) {
+ /* stdin for process */
+ if (flags & FORKER_FLAG_DO_WRITE &&
+ dup2(pipes[0], 0) < 0)
+ goto child_error;
+ /* stdout for process */
+ if (flags & FORKER_FLAG_DO_READ &&
+ dup2(pipes[1], 1) < 0)
+ goto child_error;
+ }
+ else { /* XXX will fail if pipes[0] == 4 (unlikely..) */
+ if (flags & FORKER_FLAG_DO_READ && dup2(pipes[1], 4) < 0)
+ goto child_error;
+ if (flags & FORKER_FLAG_DO_WRITE && dup2(pipes[0], 3) < 0)
+ goto child_error;
+ }
+
+ if (dup2(pipes[2], 2) < 0)
+ goto child_error;
+
+ if (wd && chdir(wd) < 0)
+ goto child_error;
#if defined(USE_SETPGRP_NOARGS) /* SysV */
(void) setpgrp();
@@ -131,34 +256,301 @@ main(int argc, char *argv[])
(void) setsid();
#endif
+ close(pipes[0]);
+ close(pipes[1]);
+ close(pipes[2]);
+
sys_sigrelease(SIGCHLD);
- sys_sigrelease(SIGINT);
- sys_sigrelease(SIGUSR1);
-
- if (erts_spawn_executable) {
- if (argv[CS_ARGV_NO_OF_ARGS + 1] == NULL) {
- execl(argv[CS_ARGV_NO_OF_ARGS],argv[CS_ARGV_NO_OF_ARGS],
- (char *) NULL);
- } else {
- execv(argv[CS_ARGV_NO_OF_ARGS],&(argv[CS_ARGV_NO_OF_ARGS + 1]));
- }
+
+ if (args) {
+ /* spawn_executable */
+ execve(cmd, args, new_environ);
} else {
- execl(SHELL, "sh", "-c", argv[CS_ARGV_CMD_IX], (char *) NULL);
+ execle(SHELL, "sh", "-c", cmd, (char *) NULL, new_environ);
}
- return 1;
+child_error:
+ DEBUG_PRINT("exec error: %d\r\n",errno);
+ _exit(128 + errno);
+}
+
+
+/*
+ * [OTP-3906]
+ * Solaris signal management gets confused when threads are used and a
+ * lot of child processes dies. The confusion results in that SIGCHLD
+ * signals aren't delivered to the emulator which in turn results in
+ * a lot of defunct processes in the system.
+ *
+ * The problem seems to appear when a signal is frequently
+ * blocked/unblocked at the same time as the signal is frequently
+ * propagated. The child waiter thread is a workaround for this problem.
+ * The SIGCHLD signal is always blocked (in all threads), and the child
+ * waiter thread fetches the signal by a call to sigwait(). See
+ * child_waiter().
+ *
+ * This should be a non-issue since the fork:ing was moved outside of
+ * the emulator into erl_child_setup. I'm leaving the comment here
+ * for posterity. */
+
+static void handle_sigchld(int sig) {
+ int buff[2], res;
+
+ sys_sigblock(SIGCHLD);
+
+ while ((buff[0] = waitpid((pid_t)(-1), buff+1, WNOHANG)) > 0) {
+ do {
+ res = write(sigchld_pipe[1], buff, sizeof(buff));
+ } while (res < 0 && errno == EINTR);
+ if (res <= 0)
+ ABORT("Failed to write to sigchld_pipe (%d): %d (%d)", sigchld_pipe[1], res, errno);
+ DEBUG_PRINT("Reap child %d (%d)", buff[0], buff[1]);
+ }
+
+ sys_sigrelease(SIGCHLD);
}
#if defined(__ANDROID__)
static int system_properties_fd(void)
{
- int fd;
+ static int fd = -2;
char *env;
+ if (fd != -2) return fd;
env = getenv("ANDROID_PROPERTY_WORKSPACE");
if (!env) {
+ fd = -1;
return -1;
}
fd = atoi(env);
return fd;
}
#endif /* __ANDROID__ */
+
+int
+main(int argc, char *argv[])
+{
+ /* This fd should be open from beam */
+ int uds_fd = 3, max_fd = 3;
+#ifndef HAVE_CLOSEFROM
+ int i;
+#endif
+ struct sigaction sa;
+
+ if (argc < 1 || sscanf(argv[1],"%d",&max_files) != 1) {
+ ABORT("Invalid arguments to child_setup");
+ }
+
+/* We close all fds except the uds from beam.
+ All other fds from now on will have the
+ CLOEXEC flags set on them. This means that we
+ only have to close a very limited number of fds
+ after we fork before the exec. */
+#if defined(HAVE_CLOSEFROM)
+ closefrom(4);
+#else
+ for (i = 4; i < max_files; i++)
+#if defined(__ANDROID__)
+ if (i != system_properties_fd())
+#endif
+ (void) close(i);
+#endif
+
+ if (pipe(sigchld_pipe) < 0) {
+ ABORT("Failed to setup sigchld pipe (%d)", errno);
+ }
+
+ SET_CLOEXEC(sigchld_pipe[0]);
+ SET_CLOEXEC(sigchld_pipe[1]);
+
+ max_fd = max_fd < sigchld_pipe[0] ? sigchld_pipe[0] : max_fd;
+
+ sa.sa_handler = &handle_sigchld;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
+ if (sigaction(SIGCHLD, &sa, 0) == -1) {
+ perror(0);
+ exit(1);
+ }
+
+ forker_hash_init();
+
+ SET_CLOEXEC(uds_fd);
+
+ DEBUG_PRINT("Starting forker %d", max_files);
+
+ while (1) {
+ fd_set read_fds;
+ int res;
+ FD_ZERO(&read_fds);
+ FD_SET(uds_fd, &read_fds);
+ FD_SET(sigchld_pipe[0], &read_fds);
+ DEBUG_PRINT("child_setup selecting on %d, %d (%d)",
+ uds_fd, sigchld_pipe[0], max_fd);
+ res = select(max_fd+1, &read_fds, NULL, NULL, NULL);
+
+ if (res < 0) {
+ if (errno == EINTR) continue;
+ ABORT("Select failed: %d (%d)",res, errno);
+ }
+
+ if (FD_ISSET(uds_fd, &read_fds)) {
+ int pipes[3], res, os_pid;
+ ErtsSysForkerProto proto;
+ errno = 0;
+ if ((res = sys_uds_read(uds_fd, (char*)&proto, sizeof(proto),
+ pipes, 3, MSG_DONTWAIT)) < 0) {
+ if (errno == EINTR)
+ continue;
+ DEBUG_PRINT("erl_child_setup failed to read from uds: %d, %d", res, errno);
+ _exit(0);
+ }
+
+ if (res == 0) {
+ DEBUG_PRINT("uds was closed!");
+ _exit(0);
+ }
+ /* Since we use unix domain sockets and send the entire data in
+ one go we *should* get the entire payload at once. */
+ ASSERT(res == sizeof(proto));
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Start);
+
+ sys_sigblock(SIGCHLD);
+
+ errno = 0;
+
+ os_pid = fork();
+ if (os_pid == 0)
+ start_new_child(pipes);
+
+ add_os_pid_to_port_id_mapping(proto.u.start.port_id, os_pid);
+
+ /* We write an ack here, but expect the reply on
+ the pipes[0] inside the fork */
+ proto.action = ErtsSysForkerProtoAction_Go;
+ proto.u.go.os_pid = os_pid;
+ proto.u.go.error_number = errno;
+ while (write(pipes[1], &proto, sizeof(proto)) < 0 && errno == EINTR)
+ ; /* remove gcc warning */
+
+#ifdef FORKER_PROTO_START_ACK
+ proto.action = ErtsSysForkerProtoAction_StartAck;
+ while (write(uds_fd, &proto, sizeof(proto)) < 0 && errno == EINTR)
+ ; /* remove gcc warning */
+#endif
+
+ sys_sigrelease(SIGCHLD);
+ close(pipes[0]);
+ close(pipes[1]);
+ close(pipes[2]);
+ }
+
+ if (FD_ISSET(sigchld_pipe[0], &read_fds)) {
+ int ibuff[2];
+ ErtsSysForkerProto proto;
+ res = read(sigchld_pipe[0], ibuff, sizeof(ibuff));
+ if (res <= 0) {
+ if (errno == EINTR)
+ continue;
+ ABORT("Failed to read from sigchld pipe: %d (%d)", res, errno);
+ }
+
+ proto.u.sigchld.port_id = get_port_id((pid_t)(ibuff[0]));
+
+ if (proto.u.sigchld.port_id == THE_NON_VALUE)
+ continue; /* exit status report not requested */
+
+ proto.action = ErtsSysForkerProtoAction_SigChld;
+ proto.u.sigchld.error_number = ibuff[1];
+ DEBUG_PRINT("send %s to %d", buff, uds_fd);
+ if (write(uds_fd, &proto, sizeof(proto)) < 0) {
+ if (errno == EINTR)
+ continue;
+ /* The uds was close, which most likely means that the VM
+ has exited. This will be detected when we try to read
+ from the uds_fd. */
+ DEBUG_PRINT("Failed to write to uds: %d (%d)", uds_fd, errno);
+ }
+ }
+ }
+ return 1;
+}
+
+typedef struct exit_status {
+ HashBucket hb;
+ pid_t os_pid;
+ Eterm port_id;
+} ErtsSysExitStatus;
+
+static Hash *forker_hash;
+
+static void add_os_pid_to_port_id_mapping(Eterm port_id, pid_t os_pid)
+{
+ if (port_id != THE_NON_VALUE) {
+ /* exit status report requested */
+ ErtsSysExitStatus es;
+ es.os_pid = os_pid;
+ es.port_id = port_id;
+ hash_put(forker_hash, &es);
+ }
+}
+
+static Eterm get_port_id(pid_t os_pid)
+{
+ ErtsSysExitStatus est, *es;
+ Eterm port_id;
+ est.os_pid = os_pid;
+ es = hash_remove(forker_hash, &est);
+ if (!es) return THE_NON_VALUE;
+ port_id = es->port_id;
+ free(es);
+ return port_id;
+}
+
+static int fcmp(void *a, void *b)
+{
+ ErtsSysExitStatus *sa = a;
+ ErtsSysExitStatus *sb = b;
+ return !(sa->os_pid == sb->os_pid);
+}
+
+static HashValue fhash(void *e)
+{
+ ErtsSysExitStatus *se = e;
+ Uint32 val = se->os_pid;
+ val = (val+0x7ed55d16) + (val<<12);
+ val = (val^0xc761c23c) ^ (val>>19);
+ val = (val+0x165667b1) + (val<<5);
+ val = (val+0xd3a2646c) ^ (val<<9);
+ val = (val+0xfd7046c5) + (val<<3);
+ val = (val^0xb55a4f09) ^ (val>>16);
+ return val;
+}
+
+static void *falloc(void *e)
+{
+ ErtsSysExitStatus *se = e;
+ ErtsSysExitStatus *ne = malloc(sizeof(ErtsSysExitStatus));
+ ne->os_pid = se->os_pid;
+ ne->port_id = se->port_id;
+ return ne;
+}
+
+static void *meta_alloc(int type, size_t size) { return malloc(size); }
+static void meta_free(int type, void *p) { free(p); }
+
+static int forker_hash_init(void)
+{
+ HashFunctions forker_hash_functions;
+ forker_hash_functions.hash = fhash;
+ forker_hash_functions.cmp = fcmp;
+ forker_hash_functions.alloc = falloc;
+ forker_hash_functions.free = free;
+ forker_hash_functions.meta_alloc = meta_alloc;
+ forker_hash_functions.meta_free = meta_free;
+ forker_hash_functions.meta_print = NULL;
+
+ forker_hash = hash_new(0, "forker_hash",
+ 16, forker_hash_functions);
+
+ return 1;
+}
diff --git a/erts/emulator/sys/unix/erl_child_setup.h b/erts/emulator/sys/unix/erl_child_setup.h
new file mode 100644
index 0000000000..a28b136bfc
--- /dev/null
+++ b/erts/emulator/sys/unix/erl_child_setup.h
@@ -0,0 +1,77 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2015-2015. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * This file defines the interface inbetween erts and child_setup.
+ */
+
+#ifndef _ERL_UNIX_FORKER_H
+#define _ERL_UNIX_FORKER_H
+
+#include "sys.h"
+
+#ifdef __FreeBSD__
+/* The freebsd sendmsg man page explicitly states that
+ you should not close fds before they are known
+ to have reached the other side, so this Ack protects
+ against that. */
+#define FORKER_PROTO_START_ACK 1
+#endif
+
+#define FORKER_ARGV_NO_OF_ARGS 3
+#define FORKER_ARGV_PROGNAME_IX 0 /* Program name */
+#define FORKER_ARGV_MAX_FILES 1 /* max_files */
+
+#define FORKER_FLAG_USE_STDIO (1 << 0) /* dup the pipe to stdin/stderr */
+#define FORKER_FLAG_EXIT_STATUS (1 << 1) /* send the exit status to parent */
+#define FORKER_FLAG_DO_READ (1 << 2) /* dup write fd */
+#define FORKER_FLAG_DO_WRITE (1 << 3) /* dup read fd */
+
+#if SIZEOF_VOID_P == SIZEOF_LONG
+typedef unsigned long ErtsSysPortId;
+#elif SIZEOF_VOID_P == SIZEOF_INT
+typedef unsigned int ErtsSysPortId;
+#elif SIZEOF_VOID_P == SIZEOF_LONG_LONG
+typedef unsigned long long ErtsSysPortId;
+#endif
+
+typedef struct ErtsSysForkerProto_ {
+ enum {
+ ErtsSysForkerProtoAction_Start,
+ ErtsSysForkerProtoAction_StartAck,
+ ErtsSysForkerProtoAction_Go,
+ ErtsSysForkerProtoAction_SigChld,
+ ErtsSysForkerProtoAction_Ack
+ } action;
+ union {
+ struct {
+ ErtsSysPortId port_id;
+ int fds[3];
+ } start;
+ struct {
+ pid_t os_pid;
+ int error_number;
+ } go;
+ struct {
+ ErtsSysPortId port_id;
+ int error_number;
+ } sigchld;
+ } u;
+} ErtsSysForkerProto;
+
+#endif /* #ifndef _ERL_UNIX_FORKER_H */
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h
index b55180c509..e217c38ca9 100644
--- a/erts/emulator/sys/unix/erl_unix_sys.h
+++ b/erts/emulator/sys/unix/erl_unix_sys.h
@@ -30,9 +30,7 @@
#include <limits.h>
#include <stdlib.h>
#include <string.h>
-#ifndef QNX
#include <memory.h>
-#endif
#if defined(__sun__) && defined(__SVR4) && !defined(__EXTENSIONS__)
# define __EXTENSIONS__
@@ -92,11 +90,6 @@
#include <ieeefp.h>
#endif
-#ifdef QNX
-#include <process.h>
-#include <sys/qnx_glob.h>
-#endif
-
#include <pwd.h>
#ifndef HZ
@@ -108,6 +101,10 @@
#endif
#include <netdb.h>
+#ifdef HAVE_MACH_ABSOLUTE_TIME
+#include <mach/mach_time.h>
+#endif
+
#ifdef HAVE_POSIX_MEMALIGN
# define ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC 1
#endif
@@ -136,13 +133,6 @@
# define ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
#endif
-#ifndef ENABLE_CHILD_WAITER_THREAD
-# ifdef ERTS_SMP
-# define ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
-void erts_check_children(void);
-# endif
-#endif
-
typedef void *GETENV_STATE;
/*
@@ -171,6 +161,7 @@ typedef long long ErtsSysHrTime;
#endif
typedef ErtsMonotonicTime ErtsSystemTime;
+typedef ErtsSysHrTime ErtsSysPerfCounter;
#define ERTS_MONOTONIC_TIME_MIN (((ErtsMonotonicTime) 1) << 63)
#define ERTS_MONOTONIC_TIME_MAX (~ERTS_MONOTONIC_TIME_MIN)
@@ -219,6 +210,7 @@ ErtsSystemTime erts_os_system_time(void);
* It may or may not be monotonic.
*/
ErtsSysHrTime erts_sys_hrtime(void);
+#define ERTS_HRTIME_UNIT (1000*1000*1000)
struct erts_sys_time_read_only_data__ {
#ifdef ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__
@@ -227,6 +219,8 @@ struct erts_sys_time_read_only_data__ {
#ifdef ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__
void (*os_times)(ErtsMonotonicTime *, ErtsSystemTime *);
#endif
+ ErtsSysPerfCounter (*perf_counter)(void);
+ ErtsSysPerfCounter perf_counter_unit;
int ticks_per_sec;
};
@@ -280,7 +274,24 @@ erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
#endif /* ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT */
/*
- *
+ * Functions for getting the performance counter
+ */
+
+ERTS_GLB_INLINE ErtsSysPerfCounter erts_sys_perf_counter(void);
+#define erts_sys_perf_counter_unit() erts_sys_time_data__.r.o.perf_counter_unit
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE ErtsSysPerfCounter
+erts_sys_perf_counter()
+{
+ return (*erts_sys_time_data__.r.o.perf_counter)();
+}
+
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
+/*
+ * Functions for measuring CPU time
*/
#if (defined(HAVE_GETHRVTIME) || defined(HAVE_CLOCK_GETTIME_CPU_TIME))
@@ -310,7 +321,6 @@ typedef void (*SIGFUNC)(int);
extern SIGFUNC sys_signal(int, SIGFUNC);
extern void sys_sigrelease(int);
extern void sys_sigblock(int);
-extern void sys_stop_cat(void);
extern void sys_init_suspend_handler(void);
/*
@@ -426,19 +436,6 @@ void erts_sys_unblock_fpe(int);
#define ERTS_FP_ERROR_THOROUGH(p, f, A) __ERTS_FP_ERROR_THOROUGH(&(p)->fp_exception, f, A)
-#ifdef NEED_CHILD_SETUP_DEFINES
-/* The child setup argv[] */
-#define CS_ARGV_PROGNAME_IX 0 /* Program name */
-#define CS_ARGV_UNBIND_IX 1 /* Unbind from cpu */
-#define CS_ARGV_WD_IX 2 /* Working directory */
-#define CS_ARGV_CMD_IX 3 /* Command */
-#define CS_ARGV_FD_CR_IX 4 /* Fd close range */
-#define CS_ARGV_DUP2_OP_IX(N) ((N) + 5) /* dup2 operations */
-
-#define CS_ARGV_NO_OF_DUP2_OPS 3 /* Number of dup2 ops */
-#define CS_ARGV_NO_OF_ARGS 8 /* Number of arguments */
-#endif /* #ifdef NEED_CHILD_SETUP_DEFINES */
-
/* Threads */
#ifdef USE_THREADS
extern int init_async(int);
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index a57b69aa89..4f992d3caf 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -49,7 +49,6 @@
#include <sys/ioctl.h>
#endif
-#define NEED_CHILD_SETUP_DEFINES
#define ERTS_WANT_BREAK_HANDLING
#define ERTS_WANT_GOT_SIGUSR1
#define WANT_NONBLOCKING /* must define this to pull in defs from sys.h */
@@ -67,7 +66,7 @@
#include "erl_mseg.h"
extern char **environ;
-static erts_smp_rwmtx_t environ_rwmtx;
+erts_smp_rwmtx_t environ_rwmtx;
#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
* vector sock_sendv().
@@ -76,89 +75,12 @@ static erts_smp_rwmtx_t environ_rwmtx;
* Don't need global.h, but bif_table.h (included by bif.h),
* won't compile otherwise
*/
-#include "global.h"
+#include "global.h"
#include "bif.h"
-#include "erl_sys_driver.h"
#include "erl_check_io.h"
#include "erl_cpu_topology.h"
-#ifndef DISABLE_VFORK
-#define DISABLE_VFORK 0
-#endif
-
-#if defined IOV_MAX
-#define MAXIOV IOV_MAX
-#elif defined UIO_MAXIOV
-#define MAXIOV UIO_MAXIOV
-#else
-#define MAXIOV 16
-#endif
-
-#ifdef USE_THREADS
-# ifdef ENABLE_CHILD_WAITER_THREAD
-# define CHLDWTHR ENABLE_CHILD_WAITER_THREAD
-# else
-# define CHLDWTHR 0
-# endif
-# define FDBLOCK 1
-#else
-# define CHLDWTHR 0
-# define FDBLOCK 0
-#endif
-/*
- * [OTP-3906]
- * Solaris signal management gets confused when threads are used and a
- * lot of child processes dies. The confusion results in that SIGCHLD
- * signals aren't delivered to the emulator which in turn results in
- * a lot of defunct processes in the system.
- *
- * The problem seems to appear when a signal is frequently
- * blocked/unblocked at the same time as the signal is frequently
- * propagated. The child waiter thread is a workaround for this problem.
- * The SIGCHLD signal is always blocked (in all threads), and the child
- * waiter thread fetches the signal by a call to sigwait(). See
- * child_waiter().
- */
-
-typedef struct ErtsSysReportExit_ ErtsSysReportExit;
-struct ErtsSysReportExit_ {
- ErtsSysReportExit *next;
- Eterm port;
- int pid;
- int ifd;
- int ofd;
-#if CHLDWTHR && !defined(ERTS_SMP)
- int status;
-#endif
-};
-
-/* Used by the fd driver iff the fd could not be set to non-blocking */
-typedef struct ErtsSysBlocking_ {
- ErlDrvPDL pdl;
- int res;
- int err;
- unsigned int pkey;
-} ErtsSysBlocking;
-
-
-/* This data is shared by these drivers - initialized by spawn_init() */
-static struct driver_data {
- ErlDrvPort port_num;
- int ofd, packet_bytes;
- ErtsSysReportExit *report_exit;
- int pid;
- int alive;
- int status;
- int terminating;
- ErtsSysBlocking *blocking;
-} *driver_data; /* indexed by fd */
-
-static ErtsSysReportExit *report_exit_list;
-#if CHLDWTHR && !defined(ERTS_SMP)
-static ErtsSysReportExit *report_exit_transit_list;
-#endif
-
extern int driver_interrupt(int, int);
extern void do_break(void);
@@ -170,33 +92,6 @@ extern void erts_sys_init_float(void);
extern void erl_crash_dump(char* file, int line, char* fmt, ...);
-#define DIR_SEPARATOR_CHAR '/'
-
-#if defined(__ANDROID__)
-#define SHELL "/system/bin/sh"
-#else
-#define SHELL "/bin/sh"
-#endif /* __ANDROID__ */
-
-
-#if defined(DEBUG)
-#define ERL_BUILD_TYPE_MARKER ".debug"
-#elif defined(PURIFY)
-#define ERL_BUILD_TYPE_MARKER ".purify"
-#elif defined(QUANTIFY)
-#define ERL_BUILD_TYPE_MARKER ".quantify"
-#elif defined(PURECOV)
-#define ERL_BUILD_TYPE_MARKER ".purecov"
-#elif defined(VALGRIND)
-#define ERL_BUILD_TYPE_MARKER ".valgrind"
-#else /* opt */
-#define ERL_BUILD_TYPE_MARKER
-#endif
-
-#define CHILD_SETUP_PROG_NAME "child_setup" ERL_BUILD_TYPE_MARKER
-#if !DISABLE_VFORK
-static char *child_setup_prog;
-#endif
#ifdef DEBUG
static int debug_log = 0;
@@ -220,7 +115,7 @@ static volatile int have_prepared_crash_dump;
(have_prepared_crash_dump++)
#endif
-static erts_smp_atomic_t sys_misc_mem_sz;
+erts_smp_atomic_t sys_misc_mem_sz;
#if defined(ERTS_SMP)
static void smp_sig_notify(char c);
@@ -235,46 +130,6 @@ static int sig_suspend_fds[2] = {-1, -1};
jmp_buf erts_sys_sigsegv_jmp;
-#if CHLDWTHR || defined(ERTS_SMP)
-erts_mtx_t chld_stat_mtx;
-#endif
-#if CHLDWTHR
-static erts_tid_t child_waiter_tid;
-/* chld_stat_mtx is used to protect against concurrent accesses
- of the driver_data fields pid, alive, and status. */
-erts_cnd_t chld_stat_cnd;
-static long children_alive;
-#define CHLD_STAT_LOCK erts_mtx_lock(&chld_stat_mtx)
-#define CHLD_STAT_UNLOCK erts_mtx_unlock(&chld_stat_mtx)
-#define CHLD_STAT_WAIT erts_cnd_wait(&chld_stat_cnd, &chld_stat_mtx)
-#define CHLD_STAT_SIGNAL erts_cnd_signal(&chld_stat_cnd)
-#elif defined(ERTS_SMP) /* ------------------------------------------------- */
-#define CHLD_STAT_LOCK erts_mtx_lock(&chld_stat_mtx)
-#define CHLD_STAT_UNLOCK erts_mtx_unlock(&chld_stat_mtx)
-
-#else /* ------------------------------------------------------------------- */
-#define CHLD_STAT_LOCK
-#define CHLD_STAT_UNLOCK
-static volatile int children_died;
-#endif
-
-
-static struct fd_data {
- char pbuf[4]; /* hold partial packet bytes */
- int psz; /* size of pbuf */
- char *buf;
- char *cpos;
- int sz;
- int remain; /* for input on fd */
-} *fd_data; /* indexed by fd */
-
-/* static FUNCTION(int, write_fill, (int, char*, int)); unused? */
-static void note_child_death(int, int);
-
-#if CHLDWTHR
-static void* child_waiter(void *);
-#endif
-
static int crashdump_companion_cube_fd = -1;
/********************* General functions ****************************/
@@ -455,9 +310,10 @@ MALLOC_USE_HASH(1);
#ifdef USE_THREADS
#ifdef ERTS_THR_HAVE_SIG_FUNCS
+
/*
* Child thread inherits parents signal mask at creation. In order to
- * guarantee that the main thread will receive all SIGINT, SIGCHLD, and
+ * guarantee that the main thread will receive all SIGINT, and
* SIGUSR1 signals sent to the process, we block these signals in the
* parent thread when creating a new thread.
*/
@@ -553,14 +409,11 @@ erts_sys_pre_init(void)
#ifdef ERTS_THR_HAVE_SIG_FUNCS
sigemptyset(&thr_create_sigmask);
sigaddset(&thr_create_sigmask, SIGINT); /* block interrupt */
- sigaddset(&thr_create_sigmask, SIGCHLD); /* block child signals */
sigaddset(&thr_create_sigmask, SIGUSR1); /* block user defined signal */
#endif
erts_thr_init(&eid);
- report_exit_list = NULL;
-
#ifdef ERTS_ENABLE_LOCK_COUNT
erts_lcnt_init();
#endif
@@ -571,17 +424,6 @@ erts_sys_pre_init(void)
#ifdef USE_THREADS
-#if CHLDWTHR || defined(ERTS_SMP)
- erts_mtx_init(&chld_stat_mtx, "child_status");
-#endif
-#if CHLDWTHR
-#ifndef ERTS_SMP
- report_exit_transit_list = NULL;
-#endif
- erts_cnd_init(&chld_stat_cnd);
- children_alive = 0;
-#endif
-
#ifdef ERTS_SMP
erts_smp_atomic32_init_nob(&erts_break_requested, 0);
erts_smp_atomic32_init_nob(&erts_got_sigusr1, 0);
@@ -591,9 +433,6 @@ erts_sys_pre_init(void)
erts_got_sigusr1 = 0;
have_prepared_crash_dump = 0;
#endif
-#if !CHLDWTHR && !defined(ERTS_SMP)
- children_died = 0;
-#endif
#endif /* USE_THREADS */
@@ -630,39 +469,6 @@ erts_sys_pre_init(void)
void
erl_sys_init(void)
{
-#if !DISABLE_VFORK
- {
- int res;
- char bindir[MAXPATHLEN];
- size_t bindirsz = sizeof(bindir);
- Uint csp_path_sz;
-
- res = erts_sys_getenv_raw("BINDIR", bindir, &bindirsz);
- if (res != 0) {
- if (res < 0)
- erl_exit(-1,
- "Environment variable BINDIR is not set\n");
- if (res > 0)
- erl_exit(-1,
- "Value of environment variable BINDIR is too large\n");
- }
- if (bindir[0] != DIR_SEPARATOR_CHAR)
- erl_exit(-1,
- "Environment variable BINDIR does not contain an"
- " absolute path\n");
- csp_path_sz = (strlen(bindir)
- + 1 /* DIR_SEPARATOR_CHAR */
- + sizeof(CHILD_SETUP_PROG_NAME)
- + 1);
- child_setup_prog = erts_alloc(ERTS_ALC_T_CS_PROG_PATH, csp_path_sz);
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, csp_path_sz);
- erts_snprintf(child_setup_prog, csp_path_sz,
- "%s%c%s",
- bindir,
- DIR_SEPARATOR_CHAR,
- CHILD_SETUP_PROG_NAME);
- }
-#endif
#ifdef USE_SETLINEBUF
setlinebuf(stdout);
@@ -827,7 +633,7 @@ break_requested(void)
fprintf(stderr,"break!\n");
#endif
if (ERTS_BREAK_REQUESTED)
- erl_exit(ERTS_INTR_EXIT, "");
+ erts_exit(ERTS_INTR_EXIT, "");
ERTS_SET_BREAK_REQUESTED;
ERTS_CHK_IO_AS_INTR(); /* Make sure we don't sleep in poll */
@@ -866,7 +672,7 @@ sigusr1_exit(void)
}
prepare_crash_dump(secs);
- erl_exit(1, "Received SIGUSR1\n");
+ erts_exit(ERTS_ERROR_EXIT, "Received SIGUSR1\n");
}
#ifdef ETHR_UNUSABLE_SIGUSRX
@@ -922,7 +728,7 @@ static RETSIGTYPE suspend_signal(int signum)
static void
quit_requested(void)
{
- erl_exit(ERTS_INTR_EXIT, "");
+ erts_exit(ERTS_INTR_EXIT, "");
}
#if (defined(SIG_SIGSET) || defined(SIG_SIGNAL))
@@ -984,43 +790,6 @@ int sys_max_files(void)
return(max_files);
}
-static void block_signals(void)
-{
-#if !CHLDWTHR
- sys_sigblock(SIGCHLD);
-#endif
-#ifndef ERTS_SMP
- sys_sigblock(SIGINT);
-#ifndef ETHR_UNUSABLE_SIGUSRX
- sys_sigblock(SIGUSR1);
-#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
-#endif /* #ifndef ERTS_SMP */
-
-#ifdef ERTS_SYS_SUSPEND_SIGNAL
- sys_sigblock(ERTS_SYS_SUSPEND_SIGNAL);
-#endif
-
-}
-
-static void unblock_signals(void)
-{
- /* Update erl_child_setup.c if changed */
-#if !CHLDWTHR
- sys_sigrelease(SIGCHLD);
-#endif
-#ifndef ERTS_SMP
- sys_sigrelease(SIGINT);
-#ifndef ETHR_UNUSABLE_SIGUSRX
- sys_sigrelease(SIGUSR1);
-#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
-#endif /* #ifndef ERTS_SMP */
-
-#ifdef ERTS_SYS_SUSPEND_SIGNAL
- sys_sigrelease(ERTS_SYS_SUSPEND_SIGNAL);
-#endif
-
-}
-
/************************** OS info *******************************/
/* Used by erlang:info/1. */
@@ -1108,1502 +877,6 @@ void fini_getenv_state(GETENV_STATE *state)
erts_smp_rwmtx_runlock(&environ_rwmtx);
}
-
-/************************** Port I/O *******************************/
-
-
-
-/* I. Common stuff */
-
-/*
- * Decreasing the size of it below 16384 is not allowed.
- */
-
-/* II. The spawn/fd/vanilla drivers */
-
-#define ERTS_SYS_READ_BUF_SZ (64*1024)
-
-/* Driver interfaces */
-static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
-static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
-#if FDBLOCK
-static void fd_async(void *);
-static void fd_ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
-#endif
-static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
- char **, ErlDrvSizeT);
-static ErlDrvData vanilla_start(ErlDrvPort, char*, SysDriverOpts*);
-static int spawn_init(void);
-static void fd_stop(ErlDrvData);
-static void fd_flush(ErlDrvData);
-static void stop(ErlDrvData);
-static void ready_input(ErlDrvData, ErlDrvEvent);
-static void ready_output(ErlDrvData, ErlDrvEvent);
-static void output(ErlDrvData, char*, ErlDrvSizeT);
-static void outputv(ErlDrvData, ErlIOVec*);
-static void stop_select(ErlDrvEvent, void*);
-
-struct erl_drv_entry spawn_driver_entry = {
- spawn_init,
- spawn_start,
- stop,
- output,
- ready_input,
- ready_output,
- "spawn",
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- ERL_DRV_FLAG_USE_PORT_LOCKING,
- NULL, NULL,
- stop_select
-};
-struct erl_drv_entry fd_driver_entry = {
- NULL,
- fd_start,
- fd_stop,
- output,
- ready_input,
- ready_output,
- "fd",
- NULL,
- NULL,
- fd_control,
- NULL,
- outputv,
-#if FDBLOCK
- fd_ready_async, /* ready_async */
-#else
- NULL,
-#endif
- fd_flush, /* flush */
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- 0, /* ERL_DRV_FLAGs */
- NULL, /* handle2 */
- NULL, /* process_exit */
- stop_select
-};
-struct erl_drv_entry vanilla_driver_entry = {
- NULL,
- vanilla_start,
- stop,
- output,
- ready_input,
- ready_output,
- "vanilla",
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL, /* flush */
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- 0, /* ERL_DRV_FLAGs */
- NULL, /* handle2 */
- NULL, /* process_exit */
- stop_select
-};
-
-/* Handle SIGCHLD signals. */
-#if (defined(SIG_SIGSET) || defined(SIG_SIGNAL))
-static RETSIGTYPE onchld(void)
-#else
-static RETSIGTYPE onchld(int signum)
-#endif
-{
-#if CHLDWTHR
- ASSERT(0); /* We should *never* catch a SIGCHLD signal */
-#elif defined(ERTS_SMP)
- smp_sig_notify('C');
-#else
- children_died = 1;
- ERTS_CHK_IO_AS_INTR(); /* Make sure we don't sleep in poll */
-#endif
-}
-
-static int set_blocking_data(struct driver_data *dd) {
-
- dd->blocking = erts_alloc(ERTS_ALC_T_SYS_BLOCKING, sizeof(ErtsSysBlocking));
-
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, sizeof(ErtsSysBlocking));
-
- dd->blocking->pdl = driver_pdl_create(dd->port_num);
- dd->blocking->res = 0;
- dd->blocking->err = 0;
- dd->blocking->pkey = driver_async_port_key(dd->port_num);
-
- return 1;
-}
-
-static int set_driver_data(ErlDrvPort port_num,
- int ifd,
- int ofd,
- int packet_bytes,
- int read_write,
- int exit_status,
- int pid,
- int is_blocking)
-{
- Port *prt;
- ErtsSysReportExit *report_exit;
-
- if (!exit_status)
- report_exit = NULL;
- else {
- report_exit = erts_alloc(ERTS_ALC_T_PRT_REP_EXIT,
- sizeof(ErtsSysReportExit));
- report_exit->next = report_exit_list;
- report_exit->port = erts_drvport2id(port_num);
- report_exit->pid = pid;
- report_exit->ifd = read_write & DO_READ ? ifd : -1;
- report_exit->ofd = read_write & DO_WRITE ? ofd : -1;
-#if CHLDWTHR && !defined(ERTS_SMP)
- report_exit->status = 0;
-#endif
- report_exit_list = report_exit;
- }
-
- prt = erts_drvport2port(port_num);
- if (prt != ERTS_INVALID_ERL_DRV_PORT)
- prt->os_pid = pid;
-
- if (read_write & DO_READ) {
- driver_data[ifd].packet_bytes = packet_bytes;
- driver_data[ifd].port_num = port_num;
- driver_data[ifd].report_exit = report_exit;
- driver_data[ifd].pid = pid;
- driver_data[ifd].alive = 1;
- driver_data[ifd].status = 0;
- driver_data[ifd].terminating = 0;
- driver_data[ifd].blocking = NULL;
- if (read_write & DO_WRITE) {
- driver_data[ifd].ofd = ofd;
- if (is_blocking && FDBLOCK)
- if (!set_blocking_data(driver_data+ifd))
- return -1;
- if (ifd != ofd)
- driver_data[ofd] = driver_data[ifd]; /* structure copy */
- } else { /* DO_READ only */
- driver_data[ifd].ofd = -1;
- }
- (void) driver_select(port_num, ifd, (ERL_DRV_READ|ERL_DRV_USE), 1);
- return(ifd);
- } else { /* DO_WRITE only */
- driver_data[ofd].packet_bytes = packet_bytes;
- driver_data[ofd].port_num = port_num;
- driver_data[ofd].report_exit = report_exit;
- driver_data[ofd].ofd = ofd;
- driver_data[ofd].pid = pid;
- driver_data[ofd].alive = 1;
- driver_data[ofd].status = 0;
- driver_data[ofd].terminating = 0;
- driver_data[ofd].blocking = NULL;
- if (is_blocking && FDBLOCK)
- if (!set_blocking_data(driver_data+ofd))
- return -1;
- return(ofd);
- }
-}
-
-static int spawn_init()
-{
- int i;
-#if CHLDWTHR
- erts_thr_opts_t thr_opts = ERTS_THR_OPTS_DEFAULT_INITER;
-
- thr_opts.detached = 0;
- thr_opts.suggested_stack_size = 0; /* Smallest possible */
- thr_opts.name = "child_waiter";
-#endif
-
- sys_signal(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
- driver_data = (struct driver_data *)
- erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct driver_data));
-
- for (i = 0; i < max_files; i++)
- driver_data[i].pid = -1;
-
-#if CHLDWTHR
- sys_sigblock(SIGCHLD);
-#endif
-
- sys_signal(SIGCHLD, onchld); /* Reap children */
-
-#if CHLDWTHR
- erts_thr_create(&child_waiter_tid, child_waiter, NULL, &thr_opts);
-#endif
-
- return 1;
-}
-
-static void close_pipes(int ifd[2], int ofd[2], int read_write)
-{
- if (read_write & DO_READ) {
- (void) close(ifd[0]);
- (void) close(ifd[1]);
- }
- if (read_write & DO_WRITE) {
- (void) close(ofd[0]);
- (void) close(ofd[1]);
- }
-}
-
-static void init_fd_data(int fd, ErlDrvPort port_num)
-{
- fd_data[fd].buf = NULL;
- fd_data[fd].cpos = NULL;
- fd_data[fd].remain = 0;
- fd_data[fd].sz = 0;
- fd_data[fd].psz = 0;
-}
-
-static char **build_unix_environment(char *block)
-{
- int i;
- int j;
- int len;
- char *cp;
- char **cpp;
- char** old_env;
-
- ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
-
- cp = block;
- len = 0;
- while (*cp != '\0') {
- cp += strlen(cp) + 1;
- len++;
- }
- old_env = environ;
- while (*old_env++ != NULL) {
- len++;
- }
-
- cpp = (char **) erts_alloc_fnf(ERTS_ALC_T_ENVIRONMENT,
- sizeof(char *) * (len+1));
- if (cpp == NULL) {
- return NULL;
- }
-
- cp = block;
- len = 0;
- while (*cp != '\0') {
- cpp[len] = cp;
- cp += strlen(cp) + 1;
- len++;
- }
-
- i = len;
- for (old_env = environ; *old_env; old_env++) {
- char* old = *old_env;
-
- for (j = 0; j < len; j++) {
- char *s, *t;
-
- s = cpp[j];
- t = old;
- while (*s == *t && *s != '=') {
- s++, t++;
- }
- if (*s == '=' && *t == '=') {
- break;
- }
- }
-
- if (j == len) { /* New version not found */
- cpp[len++] = old;
- }
- }
-
- for (j = 0; j < i; ) {
- size_t last = strlen(cpp[j])-1;
- if (cpp[j][last] == '=' && strchr(cpp[j], '=') == cpp[j]+last) {
- cpp[j] = cpp[--len];
- if (len < i) {
- i--;
- } else {
- j++;
- }
- }
- else {
- j++;
- }
- }
-
- cpp[len] = NULL;
- return cpp;
-}
-
-/*
- [arndt] In most Unix systems, including Solaris 2.5, 'fork' allocates memory
- in swap space for the child of a 'fork', whereas 'vfork' does not do this.
- The natural call to use here is therefore 'vfork'. Due to a bug in
- 'vfork' in Solaris 2.5 (apparently fixed in 2.6), using 'vfork'
- can be dangerous in what seems to be these circumstances:
- If the child code under a vfork sets the signal action to SIG_DFL
- (or SIG_IGN)
- for any signal which was previously set to a signal handler, the
- state of the parent is clobbered, so that the later arrival of
- such a signal yields a sigsegv in the parent. If the signal was
- not set to a signal handler, but ignored, all seems to work.
- If you change the forking code below, beware of this.
- */
-
-static ErlDrvData spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
-{
-#define CMD_LINE_PREFIX_STR "exec "
-#define CMD_LINE_PREFIX_STR_SZ (sizeof(CMD_LINE_PREFIX_STR) - 1)
-
- int ifd[2], ofd[2], len, pid, i;
- char **volatile new_environ; /* volatile since a vfork() then cannot
- cause 'new_environ' to be clobbered
- in the parent process. */
- int saved_errno;
- long res;
- char *cmd_line;
-#ifndef QNX
- int unbind;
-#endif
-#if !DISABLE_VFORK
- int no_vfork;
- size_t no_vfork_sz = sizeof(no_vfork);
-
- no_vfork = (erts_sys_getenv_raw("ERL_NO_VFORK",
- (char *) &no_vfork,
- &no_vfork_sz) >= 0);
-#endif
-
- switch (opts->read_write) {
- case DO_READ:
- if (pipe(ifd) < 0)
- return ERL_DRV_ERROR_ERRNO;
- if (ifd[0] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- ofd[1] = -1; /* keep purify happy */
- break;
- case DO_WRITE:
- if (pipe(ofd) < 0) return ERL_DRV_ERROR_ERRNO;
- if (ofd[1] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- ifd[0] = -1; /* keep purify happy */
- break;
- case DO_READ|DO_WRITE:
- if (pipe(ifd) < 0) return ERL_DRV_ERROR_ERRNO;
- errno = EMFILE; /* default for next two conditions */
- if (ifd[0] >= max_files || pipe(ofd) < 0) {
- close_pipes(ifd, ofd, DO_READ);
- return ERL_DRV_ERROR_ERRNO;
- }
- if (ofd[1] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- break;
- default:
- ASSERT(0);
- return ERL_DRV_ERROR_GENERAL;
- }
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- /* started with spawn_executable, not with spawn */
- len = strlen(name);
- cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, len + 1);
- if (!cmd_line) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
- memcpy((void *) cmd_line,(void *) name, len);
- cmd_line[len] = '\0';
- if (access(cmd_line,X_OK) != 0) {
- int save_errno = errno;
- erts_free(ERTS_ALC_T_TMP, cmd_line);
- errno = save_errno;
- return ERL_DRV_ERROR_ERRNO;
- }
- } else {
- /* make the string suitable for giving to "sh" */
- len = strlen(name);
- cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP,
- CMD_LINE_PREFIX_STR_SZ + len + 1);
- if (!cmd_line) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
- memcpy((void *) cmd_line,
- (void *) CMD_LINE_PREFIX_STR,
- CMD_LINE_PREFIX_STR_SZ);
- memcpy((void *) (cmd_line + CMD_LINE_PREFIX_STR_SZ), (void *) name, len);
- cmd_line[CMD_LINE_PREFIX_STR_SZ + len] = '\0';
- }
-
- erts_smp_rwmtx_rlock(&environ_rwmtx);
-
- if (opts->envir == NULL) {
- new_environ = environ;
- } else if ((new_environ = build_unix_environment(opts->envir)) == NULL) {
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
-
-#ifndef QNX
- /* Block child from SIGINT and SIGUSR1. Must be before fork()
- to be safe. */
- block_signals();
-
- CHLD_STAT_LOCK;
-
- unbind = erts_sched_bind_atfork_prepare();
-
-#if !DISABLE_VFORK
- /* See fork/vfork discussion before this function. */
- if (no_vfork) {
-#endif
-
- DEBUGF(("Using fork\n"));
- pid = fork();
-
- if (pid == 0) {
- /* The child! Setup child... */
-
- if (erts_sched_bind_atfork_child(unbind) != 0)
- goto child_error;
-
- /* OBSERVE!
- * Keep child setup after vfork() (implemented below and in
- * erl_child_setup.c) up to date if changes are made here.
- */
-
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ) {
- /* stdout for process */
- if (dup2(ifd[1], 1) < 0)
- goto child_error;
- if(opts->redir_stderr)
- /* stderr for process */
- if (dup2(ifd[1], 2) < 0)
- goto child_error;
- }
- if (opts->read_write & DO_WRITE)
- /* stdin for process */
- if (dup2(ofd[0], 0) < 0)
- goto child_error;
- }
- else { /* XXX will fail if ofd[0] == 4 (unlikely..) */
- if (opts->read_write & DO_READ)
- if (dup2(ifd[1], 4) < 0)
- goto child_error;
- if (opts->read_write & DO_WRITE)
- if (dup2(ofd[0], 3) < 0)
- goto child_error;
- }
-
-#if defined(HAVE_CLOSEFROM)
- closefrom(opts->use_stdio ? 3 : 5);
-#else
- for (i = opts->use_stdio ? 3 : 5; i < max_files; i++)
- (void) close(i);
-#endif
-
- if (opts->wd && chdir(opts->wd) < 0)
- goto child_error;
-
-#if defined(USE_SETPGRP_NOARGS) /* SysV */
- (void) setpgrp();
-#elif defined(USE_SETPGRP) /* BSD */
- (void) setpgrp(0, getpid());
-#else /* POSIX */
- (void) setsid();
-#endif
-
- unblock_signals();
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- if (opts->argv == NULL) {
- execle(cmd_line,cmd_line,(char *) NULL, new_environ);
- } else {
- if (opts->argv[0] == erts_default_arg0) {
- opts->argv[0] = cmd_line;
- }
- execve(cmd_line, opts->argv, new_environ);
- if (opts->argv[0] == cmd_line) {
- opts->argv[0] = erts_default_arg0;
- }
- }
- } else {
- execle(SHELL, "sh", "-c", cmd_line, (char *) NULL, new_environ);
- }
- child_error:
- _exit(1);
- }
-#if !DISABLE_VFORK
- }
-#define ENOUGH_BYTES (44)
- else { /* Use vfork() */
- char **cs_argv= erts_alloc(ERTS_ALC_T_TMP,(CS_ARGV_NO_OF_ARGS + 1)*
- sizeof(char *));
- char fd_close_range[ENOUGH_BYTES]; /* 44 bytes are enough to */
- char dup2_op[CS_ARGV_NO_OF_DUP2_OPS][ENOUGH_BYTES]; /* hold any "%d:%d" string */
- /* on a 64-bit machine. */
-
- /* Setup argv[] for the child setup program (implemented in
- erl_child_setup.c) */
- i = 0;
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ){
- /* stdout for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 1);
- if(opts->redir_stderr)
- /* stderr for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 2);
- }
- if (opts->read_write & DO_WRITE)
- /* stdin for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ofd[0], 0);
- } else { /* XXX will fail if ofd[0] == 4 (unlikely..) */
- if (opts->read_write & DO_READ)
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 4);
- if (opts->read_write & DO_WRITE)
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ofd[0], 3);
- }
- for (; i < CS_ARGV_NO_OF_DUP2_OPS; i++)
- strcpy(&dup2_op[i][0], "-");
- erts_snprintf(fd_close_range, ENOUGH_BYTES, "%d:%d", opts->use_stdio ? 3 : 5, max_files-1);
-
- cs_argv[CS_ARGV_PROGNAME_IX] = child_setup_prog;
- cs_argv[CS_ARGV_WD_IX] = opts->wd ? opts->wd : ".";
- cs_argv[CS_ARGV_UNBIND_IX] = erts_sched_bind_atvfork_child(unbind);
- cs_argv[CS_ARGV_FD_CR_IX] = fd_close_range;
- for (i = 0; i < CS_ARGV_NO_OF_DUP2_OPS; i++)
- cs_argv[CS_ARGV_DUP2_OP_IX(i)] = &dup2_op[i][0];
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- int num = 0;
- int j = 0;
- if (opts->argv != NULL) {
- for(; opts->argv[num] != NULL; ++num)
- ;
- }
- cs_argv = erts_realloc(ERTS_ALC_T_TMP,cs_argv, (CS_ARGV_NO_OF_ARGS + 1 + num + 1) * sizeof(char *));
- cs_argv[CS_ARGV_CMD_IX] = "-";
- cs_argv[CS_ARGV_NO_OF_ARGS] = cmd_line;
- if (opts->argv != NULL) {
- for (;opts->argv[j] != NULL; ++j) {
- if (opts->argv[j] == erts_default_arg0) {
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = cmd_line;
- } else {
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = opts->argv[j];
- }
- }
- }
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = NULL;
- } else {
- cs_argv[CS_ARGV_CMD_IX] = cmd_line; /* Command */
- cs_argv[CS_ARGV_NO_OF_ARGS] = NULL;
- }
- DEBUGF(("Using vfork\n"));
- pid = vfork();
-
- if (pid == 0) {
- /* The child! */
-
- /* Observe!
- * OTP-4389: The child setup program (implemented in
- * erl_child_setup.c) will perform the necessary setup of the
- * child before it execs to the user program. This because
- * vfork() only allow an *immediate* execve() or _exit() in the
- * child.
- */
- execve(child_setup_prog, cs_argv, new_environ);
- _exit(1);
- }
- erts_free(ERTS_ALC_T_TMP,cs_argv);
- }
-#undef ENOUGH_BYTES
-#endif
-
- erts_sched_bind_atfork_parent(unbind);
-
- if (pid == -1) {
- saved_errno = errno;
- CHLD_STAT_UNLOCK;
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- unblock_signals();
- close_pipes(ifd, ofd, opts->read_write);
- errno = saved_errno;
- return ERL_DRV_ERROR_ERRNO;
- }
-#else /* QNX */
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ)
- qnx_spawn_options.iov[1] = ifd[1]; /* stdout for process */
- if (opts->read_write & DO_WRITE)
- qnx_spawn_options.iov[0] = ofd[0]; /* stdin for process */
- }
- else {
- if (opts->read_write & DO_READ)
- qnx_spawn_options.iov[4] = ifd[1];
- if (opts->read_write & DO_WRITE)
- qnx_spawn_options.iov[3] = ofd[0];
- }
- /* Close fds on exec */
- for (i = 3; i < max_files; i++)
- fcntl(i, F_SETFD, 1);
-
- qnx_spawn_options.flags = _SPAWN_SETSID;
- if ((pid = spawnl(P_NOWAIT, SHELL, SHELL, "-c", cmd_line,
- (char *) 0)) < 0) {
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- reset_qnx_spawn();
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- close_pipes(ifd, ofd, opts->read_write);
- return ERL_DRV_ERROR_GENERAL;
- }
- reset_qnx_spawn();
-#endif /* QNX */
-
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
-
- if (new_environ != environ)
- erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
-
- if (opts->read_write & DO_READ)
- (void) close(ifd[1]);
- if (opts->read_write & DO_WRITE)
- (void) close(ofd[0]);
-
- if (opts->read_write & DO_READ) {
- SET_NONBLOCKING(ifd[0]);
- init_fd_data(ifd[0], port_num);
- }
- if (opts->read_write & DO_WRITE) {
- SET_NONBLOCKING(ofd[1]);
- init_fd_data(ofd[1], port_num);
- }
-
- res = set_driver_data(port_num, ifd[0], ofd[1], opts->packet_bytes,
- opts->read_write, opts->exit_status, pid, 0);
- /* Don't unblock SIGCHLD until now, since the call above must
- first complete putting away the info about our new subprocess. */
- unblock_signals();
-
-#if CHLDWTHR
- ASSERT(children_alive >= 0);
-
- if (!(children_alive++))
- CHLD_STAT_SIGNAL; /* Wake up child waiter thread if no children
- was alive before we fork()ed ... */
-#endif
- /* Don't unlock chld_stat_mtx until now of the same reason as above */
- CHLD_STAT_UNLOCK;
-
- erts_smp_rwmtx_runlock(&environ_rwmtx);
-
- return (ErlDrvData)res;
-#undef CMD_LINE_PREFIX_STR
-#undef CMD_LINE_PREFIX_STR_SZ
-}
-
-#ifdef QNX
-static reset_qnx_spawn()
-{
- int i;
-
- /* Reset qnx_spawn_options */
- qnx_spawn_options.flags = 0;
- qnx_spawn_options.iov[0] = 0xff;
- qnx_spawn_options.iov[1] = 0xff;
- qnx_spawn_options.iov[2] = 0xff;
- qnx_spawn_options.iov[3] = 0xff;
-}
-#endif
-
-#define FD_DEF_HEIGHT 24
-#define FD_DEF_WIDTH 80
-/* Control op */
-#define FD_CTRL_OP_GET_WINSIZE 100
-
-static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
-{
-#ifdef TIOCGWINSZ
- struct winsize ws;
- if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
- *width = (Uint32) ws.ws_col;
- *height = (Uint32) ws.ws_row;
- return 0;
- }
-#endif
- return -1;
-}
-
-static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
- unsigned int command,
- char *buf, ErlDrvSizeT len,
- char **rbuf, ErlDrvSizeT rlen)
-{
- int fd = (int)(long)drv_data;
- char resbuff[2*sizeof(Uint32)];
- switch (command) {
- case FD_CTRL_OP_GET_WINSIZE:
- {
- Uint32 w,h;
- if (fd_get_window_size(fd,&w,&h))
- return 0;
- memcpy(resbuff,&w,sizeof(Uint32));
- memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
- }
- break;
- default:
- return 0;
- }
- if (rlen < 2*sizeof(Uint32)) {
- *rbuf = driver_alloc(2*sizeof(Uint32));
- }
- memcpy(*rbuf,resbuff,2*sizeof(Uint32));
- return 2*sizeof(Uint32);
-}
-
-static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
- SysDriverOpts* opts)
-{
- ErlDrvData res;
- int non_blocking = 0;
-
- if (((opts->read_write & DO_READ) && opts->ifd >= max_files) ||
- ((opts->read_write & DO_WRITE) && opts->ofd >= max_files))
- return ERL_DRV_ERROR_GENERAL;
-
- /*
- * Historical:
- *
- * "Note about nonblocking I/O.
- *
- * At least on Solaris, setting the write end of a TTY to nonblocking,
- * will set the input end to nonblocking as well (and vice-versa).
- * If erl is run in a pipeline like this: cat | erl
- * the input end of the TTY will be the standard input of cat.
- * And cat is not prepared to handle nonblocking I/O."
- *
- * Actually, the reason for this is not that the tty itself gets set
- * in non-blocking mode, but that the "input end" (cat's stdin) and
- * the "output end" (erlang's stdout) are typically the "same" file
- * descriptor, dup()'ed from a single fd by one of this process'
- * ancestors.
- *
- * The workaround for this problem used to be a rather bad kludge,
- * interposing an extra process ("internal cat") between erlang's
- * stdout and the original stdout, allowing erlang to set its stdout
- * in non-blocking mode without affecting the stdin of the preceding
- * process in the pipeline - and being a kludge, it caused all kinds
- * of weird problems.
- *
- * So, this is the current logic:
- *
- * The only reason to set non-blocking mode on the output fd at all is
- * if it's something that can cause a write() to block, of course,
- * i.e. primarily if it points to a tty, socket, pipe, or fifo.
- *
- * If we don't set non-blocking mode when we "should" have, and output
- * becomes blocked, the entire runtime system will be suspended - this
- * is normally bad of course, and can happen fairly "easily" - e.g. user
- * hits ^S on tty - but doesn't necessarily happen.
- *
- * If we do set non-blocking mode when we "shouldn't" have, the runtime
- * system will end up seeing EOF on the input fd (due to the preceding
- * process dying), which typically will cause the entire runtime system
- * to terminate immediately (due to whatever erlang process is seeing
- * the EOF taking it as a signal to halt the system). This is *very* bad.
- *
- * I.e. we should take a conservative approach, and only set non-
- * blocking mode when we a) need to, and b) are reasonably certain
- * that it won't be a problem. And as in the example above, the problem
- * occurs when input fd and output fd point to different "things".
- *
- * However, determining that they are not just the same "type" of
- * "thing", but actually the same instance of that type of thing, is
- * unreasonably complex in many/most cases.
- *
- * Also, with pipes, sockets, and fifos it's far from obvious that the
- * user *wants* non-blocking output: If you're running erlang inside
- * some complex pipeline, you're probably not running a real-time system
- * that must never stop, but rather *want* it to suspend if the output
- * channel is "full".
- *
- * So, the bottom line: We will only set the output fd non-blocking if
- * it points to a tty, and either a) the input fd also points to a tty,
- * or b) we can make sure that setting the output fd non-blocking
- * doesn't interfere with someone else's input, via a somewhat milder
- * kludge than the above.
- *
- * Also keep in mind that while this code is almost exclusively run as
- * a result of an erlang open_port({fd,0,1}, ...), that isn't the only
- * case - it can be called with any old pre-existing file descriptors,
- * the relations between which (if they're even two) we can only guess
- * at - still, we try our best...
- *
- * Added note OTP 18: Some systems seem to use stdout/stderr to log data
- * using unix pipes, so we cannot allow the system to block on a write.
- * Therefore we use an async thread to write the data to fd's that could
- * not be set to non-blocking. When no async threads are available we
- * fall back on the old behaviour.
- *
- * Also the guarantee about what is delivered to the OS has changed.
- * Pre 18 the fd driver did no flushing of data before terminating.
- * Now it does. This is because we want to be able to guarantee that things
- * such as escripts and friends really have outputted all data before
- * terminating. This could potentially block the termination of the system
- * for a very long time, but if the user wants to terminate fast she should
- * use erlang:halt with flush=false.
- */
-
- if (opts->read_write & DO_READ) {
- init_fd_data(opts->ifd, port_num);
- }
- if (opts->read_write & DO_WRITE) {
- init_fd_data(opts->ofd, port_num);
-
- /* If we don't have a read end, all bets are off - no non-blocking. */
- if (opts->read_write & DO_READ) {
-
- if (isatty(opts->ofd)) { /* output fd is a tty:-) */
-
- if (isatty(opts->ifd)) { /* input fd is also a tty */
-
- /* To really do this "right", we should also check that
- input and output fd point to the *same* tty - but
- this seems like overkill; ttyname() isn't for free,
- and this is a very common case - and it's hard to
- imagine a scenario where setting non-blocking mode
- here would cause problems - go ahead and do it. */
-
- non_blocking = 1;
- SET_NONBLOCKING(opts->ofd);
-
- } else { /* output fd is a tty, input fd isn't */
-
- /* This is a "problem case", but also common (see the
- example above) - i.e. it makes sense to try a bit
- harder before giving up on non-blocking mode: Try to
- re-open the tty that the output fd points to, and if
- successful replace the original one with the "new" fd
- obtained this way, and set *that* one in non-blocking
- mode. (Yes, this is a kludge.)
-
- However, re-opening the tty may fail in a couple of
- (unusual) cases:
-
- 1) The name of the tty (or an equivalent one, i.e.
- same major/minor number) can't be found, because
- it actually lives somewhere other than /dev (or
- wherever ttyname() looks for it), and isn't
- equivalent to any of those that do live in the
- "standard" place - this should be *very* unusual.
-
- 2) Permissions on the tty don't allow us to open it -
- it's perfectly possible to have an fd open to an
- object whose permissions wouldn't allow us to open
- it. This is not as unusual as it sounds, one case
- is if the user has su'ed to someone else (not
- root) - we have a read/write fd open to the tty
- (because it has been inherited all the way down
- here), but we have neither read nor write
- permission for the tty.
-
- In these cases, we finally give up, and don't set the
- output fd in non-blocking mode. */
-
- char *tty;
- int nfd;
-
- if ((tty = ttyname(opts->ofd)) != NULL &&
- (nfd = open(tty, O_WRONLY)) != -1) {
- dup2(nfd, opts->ofd);
- close(nfd);
- non_blocking = 1;
- SET_NONBLOCKING(opts->ofd);
- }
- }
- }
- }
- }
- CHLD_STAT_LOCK;
- res = (ErlDrvData)(long)set_driver_data(port_num, opts->ifd, opts->ofd,
- opts->packet_bytes,
- opts->read_write, 0, -1,
- !non_blocking);
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-static void clear_fd_data(int fd)
-{
- if (fd_data[fd].sz > 0) {
- erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fd_data[fd].buf);
- ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fd_data[fd].sz);
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fd_data[fd].sz);
- }
- fd_data[fd].buf = NULL;
- fd_data[fd].sz = 0;
- fd_data[fd].remain = 0;
- fd_data[fd].cpos = NULL;
- fd_data[fd].psz = 0;
-}
-
-static void nbio_stop_fd(ErlDrvPort prt, int fd)
-{
- driver_select(prt,fd,DO_READ|DO_WRITE,0);
- clear_fd_data(fd);
- SET_BLOCKING(fd);
-}
-
-static void fd_stop(ErlDrvData ev) /* Does not close the fds */
-{
- int ofd;
- int fd = (int)(long)ev;
- ErlDrvPort prt = driver_data[fd].port_num;
-
-#if FDBLOCK
- if (driver_data[fd].blocking) {
- erts_free(ERTS_ALC_T_SYS_BLOCKING,driver_data[fd].blocking);
- driver_data[fd].blocking = NULL;
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*sizeof(ErtsSysBlocking));
- }
-#endif
-
- nbio_stop_fd(prt, fd);
- ofd = driver_data[fd].ofd;
- if (ofd != fd && ofd != -1)
- nbio_stop_fd(prt, ofd);
-}
-
-static void fd_flush(ErlDrvData fd)
-{
- if (!driver_data[(int)(long)fd].terminating)
- driver_data[(int)(long)fd].terminating = 1;
-}
-
-static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
- SysDriverOpts* opts)
-{
- int flags, fd;
- ErlDrvData res;
-
- flags = (opts->read_write == DO_READ ? O_RDONLY :
- opts->read_write == DO_WRITE ? O_WRONLY|O_CREAT|O_TRUNC :
- O_RDWR|O_CREAT);
- if ((fd = open(name, flags, 0666)) < 0)
- return ERL_DRV_ERROR_GENERAL;
- if (fd >= max_files) {
- close(fd);
- return ERL_DRV_ERROR_GENERAL;
- }
- SET_NONBLOCKING(fd);
- init_fd_data(fd, port_num);
-
- CHLD_STAT_LOCK;
- res = (ErlDrvData)(long)set_driver_data(port_num, fd, fd,
- opts->packet_bytes,
- opts->read_write, 0, -1, 0);
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-/* Note that driver_data[fd].ifd == fd if the port was opened for reading, */
-/* otherwise (i.e. write only) driver_data[fd].ofd = fd. */
-
-static void stop(ErlDrvData fd)
-{
- ErlDrvPort prt;
- int ofd;
-
- prt = driver_data[(int)(long)fd].port_num;
- nbio_stop_fd(prt, (int)(long)fd);
-
- ofd = driver_data[(int)(long)fd].ofd;
- if (ofd != (int)(long)fd && (int)(long)ofd != -1)
- nbio_stop_fd(prt, ofd);
- else
- ofd = -1;
-
- CHLD_STAT_LOCK;
-
- /* Mark as unused. */
- driver_data[(int)(long)fd].pid = -1;
-
- CHLD_STAT_UNLOCK;
-
- /* SMP note: Close has to be last thing done (open file descriptors work
- as locks on driver_data[] entries) */
- driver_select(prt, (int)(long)fd, ERL_DRV_USE, 0); /* close(fd); */
- if (ofd >= 0) {
- driver_select(prt, (int)(long)ofd, ERL_DRV_USE, 0); /* close(ofd); */
- }
-}
-
-/* used by fd_driver */
-static void outputv(ErlDrvData e, ErlIOVec* ev)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int pb = driver_data[fd].packet_bytes;
- int ofd = driver_data[fd].ofd;
- ssize_t n;
- ErlDrvSizeT sz;
- char lb[4];
- char* lbp;
- ErlDrvSizeT len = ev->size;
-
- /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
- /* if (pb >= 0 && (len & (((ErlDrvSizeT)1 << (pb*8))) - 1) != len) {*/
- if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
- driver_failure_posix(ix, EINVAL);
- return; /* -1; */
- }
- /* Handles 0 <= pb <= 4 only */
- put_int32((Uint32) len, lb);
- lbp = lb + (4-pb);
-
- ev->iov[0].iov_base = lbp;
- ev->iov[0].iov_len = pb;
- ev->size += pb;
-
- if (driver_data[fd].blocking && FDBLOCK)
- driver_pdl_lock(driver_data[fd].blocking->pdl);
-
- if ((sz = driver_sizeq(ix)) > 0) {
- driver_enqv(ix, ev, 0);
-
- if (driver_data[fd].blocking && FDBLOCK)
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
-
- if (sz + ev->size >= (1 << 13))
- set_busy_port(ix, 1);
- }
- else if (!driver_data[fd].blocking || !FDBLOCK) {
- /* We try to write directly if the fd in non-blocking */
- int vsize = ev->vsize > MAX_VSIZE ? MAX_VSIZE : ev->vsize;
-
- n = writev(ofd, (const void *) (ev->iov), vsize);
- if (n == ev->size)
- return; /* 0;*/
- if (n < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
- driver_failure_posix(ix, errno);
- return; /* -1;*/
- }
- n = 0;
- }
- driver_enqv(ix, ev, n); /* n is the skip value */
- driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
- }
-#if FDBLOCK
- else {
- if (ev->size != 0) {
- driver_enqv(ix, ev, 0);
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
- driver_async(ix, &driver_data[fd].blocking->pkey,
- fd_async, driver_data+fd, NULL);
- } else {
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
- }
- }
-#endif
- /* return 0;*/
-}
-
-/* Used by spawn_driver and vanilla driver */
-static void output(ErlDrvData e, char* buf, ErlDrvSizeT len)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int pb = driver_data[fd].packet_bytes;
- int ofd = driver_data[fd].ofd;
- ssize_t n;
- ErlDrvSizeT sz;
- char lb[4];
- char* lbp;
- struct iovec iv[2];
-
- /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
- if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
- driver_failure_posix(ix, EINVAL);
- return; /* -1; */
- }
- put_int32(len, lb);
- lbp = lb + (4-pb);
-
- if ((sz = driver_sizeq(ix)) > 0) {
- driver_enq(ix, lbp, pb);
- driver_enq(ix, buf, len);
- if (sz + len + pb >= (1 << 13))
- set_busy_port(ix, 1);
- }
- else {
- iv[0].iov_base = lbp;
- iv[0].iov_len = pb; /* should work for pb=0 */
- iv[1].iov_base = buf;
- iv[1].iov_len = len;
- n = writev(ofd, iv, 2);
- if (n == pb+len)
- return; /* 0; */
- if (n < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
- driver_failure_posix(ix, errno);
- return; /* -1; */
- }
- n = 0;
- }
- if (n < pb) {
- driver_enq(ix, lbp+n, pb-n);
- driver_enq(ix, buf, len);
- }
- else {
- n -= pb;
- driver_enq(ix, buf+n, len-n);
- }
- driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
- }
- return; /* 0; */
-}
-
-static int port_inp_failure(ErlDrvPort port_num, int ready_fd, int res)
- /* Result: 0 (eof) or -1 (error) */
-{
- int err = errno;
-
- ASSERT(res <= 0);
- (void) driver_select(port_num, ready_fd, ERL_DRV_READ|ERL_DRV_WRITE, 0);
- clear_fd_data(ready_fd);
-
- if (driver_data[ready_fd].blocking && FDBLOCK) {
- driver_pdl_lock(driver_data[ready_fd].blocking->pdl);
- if (driver_sizeq(driver_data[ready_fd].port_num) > 0) {
- driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
- /* We have stuff in the output queue, so we just
- set the state to terminating and wait for fd_async_ready
- to terminate the port */
- if (res == 0)
- driver_data[ready_fd].terminating = 2;
- else
- driver_data[ready_fd].terminating = -err;
- return 0;
- }
- driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
- }
-
- if (res == 0) {
- if (driver_data[ready_fd].report_exit) {
- CHLD_STAT_LOCK;
-
- if (driver_data[ready_fd].alive) {
- /*
- * We have eof and want to report exit status, but the process
- * hasn't exited yet. When it does report_exit_status() will
- * driver_select() this fd which will make sure that we get
- * back here with driver_data[ready_fd].alive == 0 and
- * driver_data[ready_fd].status set.
- */
- CHLD_STAT_UNLOCK;
- return 0;
- }
- else {
- int status = driver_data[ready_fd].status;
- CHLD_STAT_UNLOCK;
-
- /* We need not be prepared for stopped/continued processes. */
- if (WIFSIGNALED(status))
- status = 128 + WTERMSIG(status);
- else
- status = WEXITSTATUS(status);
-
- driver_report_exit(driver_data[ready_fd].port_num, status);
- }
- }
- driver_failure_eof(port_num);
- } else {
- driver_failure_posix(port_num, err);
- }
- return 0;
-}
-
-/* fd is the drv_data that is returned from the */
-/* initial start routine */
-/* ready_fd is the descriptor that is ready to read */
-
-static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd)
-{
- int fd = (int)(long)e;
- ErlDrvPort port_num;
- int packet_bytes;
- int res;
- Uint h;
-
- port_num = driver_data[fd].port_num;
- packet_bytes = driver_data[fd].packet_bytes;
-
-
- if (packet_bytes == 0) {
- byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
- ERTS_SYS_READ_BUF_SZ);
- res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0)
- port_inp_failure(port_num, ready_fd, res);
- else
- driver_output(port_num, (char*) read_buf, res);
- erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
- }
- else if (fd_data[ready_fd].remain > 0) { /* We try to read the remainder */
- /* space is allocated in buf */
- res = read(ready_fd, fd_data[ready_fd].cpos,
- fd_data[ready_fd].remain);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0) {
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == fd_data[ready_fd].remain) { /* we're done */
- driver_output(port_num, fd_data[ready_fd].buf,
- fd_data[ready_fd].sz);
- clear_fd_data(ready_fd);
- }
- else { /* if (res < fd_data[ready_fd].remain) */
- fd_data[ready_fd].cpos += res;
- fd_data[ready_fd].remain -= res;
- }
- }
- else if (fd_data[ready_fd].remain == 0) { /* clean fd */
- byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
- ERTS_SYS_READ_BUF_SZ);
- /* We make one read attempt and see what happens */
- res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0) { /* eof */
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res < packet_bytes - fd_data[ready_fd].psz) {
- memcpy(fd_data[ready_fd].pbuf+fd_data[ready_fd].psz,
- read_buf, res);
- fd_data[ready_fd].psz += res;
- }
- else { /* if (res >= packet_bytes) */
- unsigned char* cpos = read_buf;
- int bytes_left = res;
-
- while (1) {
- int psz = fd_data[ready_fd].psz;
- char* pbp = fd_data[ready_fd].pbuf + psz;
-
- while(bytes_left && (psz < packet_bytes)) {
- *pbp++ = *cpos++;
- bytes_left--;
- psz++;
- }
-
- if (psz < packet_bytes) {
- fd_data[ready_fd].psz = psz;
- break;
- }
- fd_data[ready_fd].psz = 0;
-
- switch (packet_bytes) {
- case 1: h = get_int8(fd_data[ready_fd].pbuf); break;
- case 2: h = get_int16(fd_data[ready_fd].pbuf); break;
- case 4: h = get_int32(fd_data[ready_fd].pbuf); break;
- default: ASSERT(0); return; /* -1; */
- }
-
- if (h <= (bytes_left)) {
- driver_output(port_num, (char*) cpos, h);
- cpos += h;
- bytes_left -= h;
- continue;
- }
- else { /* The last message we got was split */
- char *buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h);
- if (!buf) {
- errno = ENOMEM;
- port_inp_failure(port_num, ready_fd, -1);
- }
- else {
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, h);
- sys_memcpy(buf, cpos, bytes_left);
- fd_data[ready_fd].buf = buf;
- fd_data[ready_fd].sz = h;
- fd_data[ready_fd].remain = h - bytes_left;
- fd_data[ready_fd].cpos = buf + bytes_left;
- }
- break;
- }
- }
- }
- erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
- }
-}
-
-
-/* fd is the drv_data that is returned from the */
-/* initial start routine */
-/* ready_fd is the descriptor that is ready to read */
-
-static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int n;
- struct iovec* iv;
- int vsize;
-
-
- if ((iv = (struct iovec*) driver_peekq(ix, &vsize)) == NULL) {
- driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
- if (driver_data[fd].terminating)
- driver_failure_atom(driver_data[fd].port_num,"normal");
- return; /* 0; */
- }
- vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
- if ((n = writev(ready_fd, iv, vsize)) > 0) {
- if (driver_deq(ix, n) == 0)
- set_busy_port(ix, 0);
- }
- else if (n < 0) {
- if (errno == ERRNO_BLOCK || errno == EINTR)
- return; /* 0; */
- else {
- int res = errno;
- driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
- driver_failure_posix(ix, res);
- return; /* -1; */
- }
- }
- return; /* 0; */
-}
-
-static void stop_select(ErlDrvEvent fd, void* _)
-{
- close((int)fd);
-}
-
-#if FDBLOCK
-
-static void
-fd_async(void *async_data)
-{
- int res;
- struct driver_data *dd = (struct driver_data*)async_data;
- SysIOVec *iov0;
- SysIOVec *iov;
- int iovlen;
- int err = 0;
- /* much of this code is stolen from efile_drv:invoke_writev */
- driver_pdl_lock(dd->blocking->pdl);
- iov0 = driver_peekq(dd->port_num, &iovlen);
- iovlen = iovlen < MAXIOV ? iovlen : MAXIOV;
- iov = erts_alloc_fnf(ERTS_ALC_T_SYS_WRITE_BUF,
- sizeof(SysIOVec)*iovlen);
- if (!iov) {
- res = -1;
- err = ENOMEM;
- driver_pdl_unlock(dd->blocking->pdl);
- } else {
- memcpy(iov,iov0,iovlen*sizeof(SysIOVec));
- driver_pdl_unlock(dd->blocking->pdl);
-
- do {
- res = writev(dd->ofd, iov, iovlen);
- } while (res < 0 && errno == EINTR);
- if (res < 0)
- err = errno;
-
- erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov);
- }
- dd->blocking->res = res;
- dd->blocking->err = err;
-}
-
-void fd_ready_async(ErlDrvData drv_data,
- ErlDrvThreadData thread_data) {
- struct driver_data *dd = (struct driver_data *)thread_data;
- ErlDrvPort port_num = dd->port_num;
-
- ASSERT(dd->blocking);
- ASSERT(dd == (driver_data + (int)(long)drv_data));
-
- if (dd->blocking->res > 0) {
- driver_pdl_lock(dd->blocking->pdl);
- if (driver_deq(port_num, dd->blocking->res) == 0) {
- driver_pdl_unlock(dd->blocking->pdl);
- set_busy_port(port_num, 0);
- if (dd->terminating) {
- /* The port is has been ordered to terminate
- from either fd_flush or port_inp_failure */
- if (dd->terminating == 1)
- driver_failure_atom(port_num, "normal");
- else if (dd->terminating == 2)
- driver_failure_eof(port_num);
- else if (dd->terminating < 0)
- driver_failure_posix(port_num, -dd->terminating);
- return; /* -1; */
- }
- } else {
- driver_pdl_unlock(dd->blocking->pdl);
- /* still data left to write in queue */
- driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
- return /* 0; */;
- }
- } else if (dd->blocking->res < 0) {
- if (dd->blocking->err == ERRNO_BLOCK) {
- set_busy_port(port_num, 1);
- /* still data left to write in queue */
- driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
- } else
- driver_failure_posix(port_num, dd->blocking->err);
- return; /* -1; */
- }
- return; /* 0; */
-}
-
-#endif
-
void erts_do_break_handling(void)
{
struct termios temp_mode;
@@ -2744,10 +1017,6 @@ erts_sys_unsetenv(char *key)
void
sys_init_io(void)
{
- fd_data = (struct fd_data *)
- erts_alloc(ERTS_ALC_T_FD_TAB, max_files * sizeof(struct fd_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct fd_data));
}
#if (0) /* unused? */
@@ -2941,179 +1210,6 @@ erl_debug(char* fmt, ...)
#endif /* DEBUG */
-static ERTS_INLINE void
-report_exit_status(ErtsSysReportExit *rep, int status)
-{
- Port *pp;
-#ifdef ERTS_SMP
- CHLD_STAT_UNLOCK;
- pp = erts_thr_id2port_sflgs(rep->port,
- ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
- CHLD_STAT_LOCK;
-#else
- pp = erts_id2port_sflgs(rep->port,
- NULL,
- 0,
- ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
-#endif
- if (pp) {
- if (rep->ifd >= 0) {
- driver_data[rep->ifd].alive = 0;
- driver_data[rep->ifd].status = status;
- (void) driver_select(ERTS_Port2ErlDrvPort(pp),
- rep->ifd,
- (ERL_DRV_READ|ERL_DRV_USE),
- 1);
- }
- if (rep->ofd >= 0) {
- driver_data[rep->ofd].alive = 0;
- driver_data[rep->ofd].status = status;
- (void) driver_select(ERTS_Port2ErlDrvPort(pp),
- rep->ofd,
- (ERL_DRV_WRITE|ERL_DRV_USE),
- 1);
- }
-#ifdef ERTS_SMP
- erts_thr_port_release(pp);
-#else
- erts_port_release(pp);
-#endif
- }
- erts_free(ERTS_ALC_T_PRT_REP_EXIT, rep);
-}
-
-#if !CHLDWTHR /* ---------------------------------------------------------- */
-
-#define ERTS_REPORT_EXIT_STATUS report_exit_status
-
-static int check_children(void)
-{
- int res = 0;
- int pid;
- int status;
-
-#ifndef ERTS_SMP
- if (children_died)
-#endif
- {
- sys_sigblock(SIGCHLD);
- CHLD_STAT_LOCK;
- while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
- note_child_death(pid, status);
-#ifndef ERTS_SMP
- children_died = 0;
-#endif
- CHLD_STAT_UNLOCK;
- sys_sigrelease(SIGCHLD);
- res = 1;
- }
- return res;
-}
-
-#ifdef ERTS_SMP
-
-void
-erts_check_children(void)
-{
- (void) check_children();
-}
-
-#endif
-
-#elif CHLDWTHR && defined(ERTS_SMP) /* ------------------------------------- */
-
-#define ERTS_REPORT_EXIT_STATUS report_exit_status
-
-#define check_children() (0)
-
-
-#else /* CHLDWTHR && !defined(ERTS_SMP) ------------------------------------ */
-
-#define ERTS_REPORT_EXIT_STATUS initiate_report_exit_status
-
-static ERTS_INLINE void
-initiate_report_exit_status(ErtsSysReportExit *rep, int status)
-{
- rep->next = report_exit_transit_list;
- rep->status = status;
- report_exit_transit_list = rep;
- erts_sys_schedule_interrupt(1);
-}
-
-static int check_children(void)
-{
- int res;
- ErtsSysReportExit *rep;
- CHLD_STAT_LOCK;
- rep = report_exit_transit_list;
- res = rep != NULL;
- while (rep) {
- ErtsSysReportExit *curr_rep = rep;
- rep = rep->next;
- report_exit_status(curr_rep, curr_rep->status);
- }
- report_exit_transit_list = NULL;
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-#endif /* ------------------------------------------------------------------ */
-
-static void note_child_death(int pid, int status)
-{
- ErtsSysReportExit **repp = &report_exit_list;
- ErtsSysReportExit *rep = report_exit_list;
-
- while (rep) {
- if (pid == rep->pid) {
- *repp = rep->next;
- ERTS_REPORT_EXIT_STATUS(rep, status);
- break;
- }
- repp = &rep->next;
- rep = rep->next;
- }
-}
-
-#if CHLDWTHR
-
-static void *
-child_waiter(void *unused)
-{
- int pid;
- int status;
-
-#ifdef ERTS_ENABLE_LOCK_CHECK
- erts_lc_set_thread_name("child waiter");
-#endif
-
- while(1) {
-#ifdef DEBUG
- int waitpid_errno;
-#endif
- pid = waitpid(-1, &status, 0);
-#ifdef DEBUG
- waitpid_errno = errno;
-#endif
- CHLD_STAT_LOCK;
- if (pid < 0) {
- ASSERT(waitpid_errno == ECHILD);
- }
- else {
- children_alive--;
- ASSERT(children_alive >= 0);
- note_child_death(pid, status);
- }
- while (!children_alive)
- CHLD_STAT_WAIT; /* Wait for children to wait on... :) */
- CHLD_STAT_UNLOCK;
- }
-
- return NULL;
-}
-
-#endif
-
/*
* Called from schedule() when it runs out of runnable processes,
* or when Erlang code has performed INPUT_REDUCTIONS reduction
@@ -3122,13 +1218,8 @@ child_waiter(void *unused)
void
erl_sys_schedule(int runnable)
{
-#ifdef ERTS_SMP
ERTS_CHK_IO(!runnable);
-#else
- ERTS_CHK_IO(runnable ? 0 : !check_children());
-#endif
ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking());
- (void) check_children();
}
@@ -3156,10 +1247,6 @@ smp_sig_notify(char c)
static void *
signal_dispatcher_thread_func(void *unused)
{
-#if !CHLDWTHR
- int initialized = 0;
- int notify_check_children = 0;
-#endif
#ifdef ERTS_ENABLE_LOCK_CHECK
erts_lc_set_thread_name("signal_dispatcher");
#endif
@@ -3171,7 +1258,7 @@ signal_dispatcher_thread_func(void *unused)
if (res < 0) {
if (errno == EINTR)
continue;
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"signal-dispatcher thread got unexpected error: %s (%d)\n",
erl_errno_id(errno),
errno);
@@ -3197,19 +1284,7 @@ signal_dispatcher_thread_func(void *unused)
*/
switch (buf[i]) {
case 0: /* Emulator initialized */
-#if !CHLDWTHR
- initialized = 1;
- if (!notify_check_children)
-#endif
- break;
-#if !CHLDWTHR
- case 'C': /* SIGCHLD */
- if (initialized)
- erts_smp_notify_check_children_needed();
- else
- notify_check_children = 1;
- break;
-#endif
+ break;
case 'I': /* SIGINT */
break_requested();
break;
@@ -3220,7 +1295,7 @@ signal_dispatcher_thread_func(void *unused)
sigusr1_exit();
break;
default:
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"signal-dispatcher thread received unknown "
"signal notification: '%c'\n",
buf[i]);
@@ -3239,7 +1314,7 @@ init_smp_sig_notify(void)
thr_opts.name = "sys_sig_dispatcher";
if (pipe(sig_notify_fds) < 0) {
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"Failed to create signal-dispatcher pipe: %s (%d)\n",
erl_errno_id(errno),
errno);
@@ -3256,7 +1331,7 @@ static void
init_smp_sig_suspend(void) {
#ifdef ERTS_SYS_SUSPEND_SIGNAL
if (pipe(sig_suspend_fds) < 0) {
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"Failed to create sig_suspend pipe: %s (%d)\n",
erl_errno_id(errno),
errno);
@@ -3273,7 +1348,7 @@ static void initialize_darwin_main_thread_pipes(void)
{
if (pipe(erts_darwin_main_thread_pipe) < 0 ||
pipe(erts_darwin_main_thread_result_pipe) < 0) {
- erl_exit(1,"Fatal error initializing Darwin main thread stealing");
+ erts_exit(ERTS_ERROR_EXIT,"Fatal error initializing Darwin main thread stealing");
}
}
diff --git a/erts/emulator/sys/unix/sys_drivers.c b/erts/emulator/sys/unix/sys_drivers.c
new file mode 100644
index 0000000000..82fea1b330
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_drivers.c
@@ -0,0 +1,1862 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1996-2014. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef ISC32
+#define _POSIX_SOURCE
+#define _XOPEN_SOURCE
+#endif
+
+#include <sys/times.h> /* ! */
+#include <time.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sys/uio.h>
+#include <termios.h>
+#include <ctype.h>
+#include <sys/utsname.h>
+#include <sys/select.h>
+#include <arpa/inet.h>
+
+#ifdef ISC32
+#include <sys/bsdtypes.h>
+#endif
+
+#include <termios.h>
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#define WANT_NONBLOCKING /* must define this to pull in defs from sys.h */
+#include "sys.h"
+
+#ifdef USE_THREADS
+#include "erl_threads.h"
+#endif
+
+extern char **environ;
+extern erts_smp_rwmtx_t environ_rwmtx;
+
+extern erts_smp_atomic_t sys_misc_mem_sz;
+
+static Eterm forker_port;
+
+#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
+ * vector sock_sendv().
+ */
+/*
+ * Don't need global.h, but erl_cpu_topology.h won't compile otherwise
+ */
+#include "global.h"
+#include "erl_cpu_topology.h"
+
+#include "erl_sys_driver.h"
+#include "sys_uds.h"
+
+#include "erl_child_setup.h"
+
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
+#ifdef USE_THREADS
+# define FDBLOCK 1
+#else
+# define FDBLOCK 0
+#endif
+
+/* Used by the fd driver iff the fd could not be set to non-blocking */
+typedef struct ErtsSysBlocking_ {
+ ErlDrvPDL pdl;
+ int res;
+ int err;
+ unsigned int pkey;
+} ErtsSysBlocking;
+
+typedef struct fd_data {
+ int fd;
+ char pbuf[4]; /* hold partial packet bytes */
+ int psz; /* size of pbuf */
+ char *buf;
+ char *cpos;
+ int sz;
+ int remain; /* for input on fd */
+} ErtsSysFdData;
+
+typedef struct driver_data {
+ ErlDrvPort port_num;
+ ErtsSysFdData *ofd;
+ ErtsSysFdData *ifd;
+ int packet_bytes;
+ int pid;
+ int alive;
+ int status;
+ int terminating;
+ ErtsSysBlocking *blocking;
+} ErtsSysDriverData;
+
+#define DIR_SEPARATOR_CHAR '/'
+
+#if defined(__ANDROID__)
+#define SHELL "/system/bin/sh"
+#else
+#define SHELL "/bin/sh"
+#endif /* __ANDROID__ */
+
+#if defined(DEBUG)
+#define ERL_BUILD_TYPE_MARKER ".debug"
+#elif defined(PURIFY)
+#define ERL_BUILD_TYPE_MARKER ".purify"
+#elif defined(QUANTIFY)
+#define ERL_BUILD_TYPE_MARKER ".quantify"
+#elif defined(PURECOV)
+#define ERL_BUILD_TYPE_MARKER ".purecov"
+#elif defined(VALGRIND)
+#define ERL_BUILD_TYPE_MARKER ".valgrind"
+#else /* opt */
+#define ERL_BUILD_TYPE_MARKER
+#endif
+
+#ifdef DEBUG
+#define close(fd) do { int res = close(fd); ASSERT(res > -1); } while(0)
+#endif
+
+#define CHILD_SETUP_PROG_NAME "erl_child_setup" ERL_BUILD_TYPE_MARKER
+
+// #define HARD_DEBUG
+#ifdef HARD_DEBUG
+#define driver_select(port_num, fd, flags, onoff) \
+ do { \
+ if (((flags) & ERL_DRV_READ) && onoff) \
+ fprintf(stderr,"%010d %p: read select %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_WRITE) && onoff) \
+ fprintf(stderr,"%010d %p: writ select %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_READ) && !onoff) \
+ fprintf(stderr,"%010d %p: read unsele %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_WRITE) && !onoff) \
+ fprintf(stderr,"%010d %p: writ unsele %d\r\n", __LINE__, port_num, (int)fd); \
+ driver_select_nkp(port_num, fd, flags, onoff); \
+ } while(0)
+#endif
+
+/*
+ * Decreasing the size of it below 16384 is not allowed.
+ */
+
+#define ERTS_SYS_READ_BUF_SZ (64*1024)
+
+/* I. Initialization */
+
+void
+erl_sys_late_init(void)
+{
+ SysDriverOpts opts;
+#ifdef ERTS_SMP
+ Port *port;
+#endif
+
+ sys_signal(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
+
+ opts.packet_bytes = 0;
+ opts.use_stdio = 1;
+ opts.redir_stderr = 0;
+ opts.read_write = 0;
+ opts.hide_window = 0;
+ opts.wd = NULL;
+ opts.envir = NULL;
+ opts.exit_status = 0;
+ opts.overlapped_io = 0;
+ opts.spawn_type = ERTS_SPAWN_ANY;
+ opts.argv = NULL;
+ opts.parallelism = erts_port_parallelism;
+
+#ifdef ERTS_SMP
+ port =
+#endif
+ erts_open_driver(&forker_driver, make_internal_pid(0), "forker", &opts, NULL, NULL);
+#ifdef ERTS_SMP
+ erts_mtx_unlock(port->lock);
+#endif
+}
+
+/* II. Prototypes */
+
+/* II.I Spawn prototypes */
+static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
+static ErlDrvSSizeT spawn_control(ErlDrvData, unsigned int, char *,
+ ErlDrvSizeT, char **, ErlDrvSizeT);
+
+/* II.II Vanilla prototypes */
+static ErlDrvData vanilla_start(ErlDrvPort, char*, SysDriverOpts*);
+
+
+/* II.III FD prototypes */
+static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
+#if FDBLOCK
+static void fd_async(void *);
+static void fd_ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
+#endif
+static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
+ char **, ErlDrvSizeT);
+static void fd_stop(ErlDrvData);
+static void fd_flush(ErlDrvData);
+
+/* II.IV Common prototypes */
+static void stop(ErlDrvData);
+static void ready_input(ErlDrvData, ErlDrvEvent);
+static void ready_output(ErlDrvData, ErlDrvEvent);
+static void output(ErlDrvData, char*, ErlDrvSizeT);
+static void outputv(ErlDrvData, ErlIOVec*);
+static void stop_select(ErlDrvEvent, void*);
+
+/* II.V Forker prototypes */
+static ErlDrvData forker_start(ErlDrvPort, char*, SysDriverOpts*);
+static void forker_stop(ErlDrvData);
+static void forker_ready_input(ErlDrvData, ErlDrvEvent);
+static void forker_ready_output(ErlDrvData, ErlDrvEvent);
+static ErlDrvSSizeT forker_control(ErlDrvData, unsigned int, char *,
+ ErlDrvSizeT, char **, ErlDrvSizeT);
+
+/* III Driver entries */
+
+/* III.I The spawn driver */
+struct erl_drv_entry spawn_driver_entry = {
+ NULL,
+ spawn_start,
+ stop,
+ output,
+ ready_input,
+ ready_output,
+ "spawn",
+ NULL,
+ NULL,
+ spawn_control,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ ERL_DRV_FLAG_USE_PORT_LOCKING | ERL_DRV_FLAG_USE_INIT_ACK,
+ NULL, NULL,
+ stop_select
+};
+
+/* III.II The fd driver */
+struct erl_drv_entry fd_driver_entry = {
+ NULL,
+ fd_start,
+ fd_stop,
+ output,
+ ready_input,
+ ready_output,
+ "fd",
+ NULL,
+ NULL,
+ fd_control,
+ NULL,
+ outputv,
+#if FDBLOCK
+ fd_ready_async, /* ready_async */
+#else
+ NULL,
+#endif
+ fd_flush, /* flush */
+ NULL, /* call */
+ NULL, /* event */
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0, /* ERL_DRV_FLAGs */
+ NULL, /* handle2 */
+ NULL, /* process_exit */
+ stop_select
+};
+
+/* III.III The vanilla driver */
+struct erl_drv_entry vanilla_driver_entry = {
+ NULL,
+ vanilla_start,
+ stop,
+ output,
+ ready_input,
+ ready_output,
+ "vanilla",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL, /* flush */
+ NULL, /* call */
+ NULL, /* event */
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0, /* ERL_DRV_FLAGs */
+ NULL, /* handle2 */
+ NULL, /* process_exit */
+ stop_select
+};
+
+/* III.III The forker driver */
+struct erl_drv_entry forker_driver_entry = {
+ NULL,
+ forker_start,
+ forker_stop,
+ NULL,
+ forker_ready_input,
+ forker_ready_output,
+ "spawn_forker",
+ NULL,
+ NULL,
+ forker_control,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0,
+ NULL, NULL,
+ stop_select
+};
+
+/* Untility functions */
+
+static int set_blocking_data(ErtsSysDriverData *dd) {
+
+ dd->blocking = erts_alloc(ERTS_ALC_T_SYS_BLOCKING, sizeof(ErtsSysBlocking));
+
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, sizeof(ErtsSysBlocking));
+
+ dd->blocking->pdl = driver_pdl_create(dd->port_num);
+ dd->blocking->res = 0;
+ dd->blocking->err = 0;
+ dd->blocking->pkey = driver_async_port_key(dd->port_num);
+
+ return 1;
+}
+
+static void init_fd_data(ErtsSysFdData *fd_data, int fd)
+{
+ fd_data->fd = fd;
+ fd_data->buf = NULL;
+ fd_data->cpos = NULL;
+ fd_data->remain = 0;
+ fd_data->sz = 0;
+ fd_data->psz = 0;
+}
+
+static ErtsSysDriverData *
+create_driver_data(ErlDrvPort port_num,
+ int ifd,
+ int ofd,
+ int packet_bytes,
+ int read_write,
+ int exit_status,
+ int pid,
+ int is_blocking)
+{
+ Port *prt;
+ ErtsSysDriverData *driver_data;
+ char *data;
+ int size = sizeof(ErtsSysDriverData);
+
+ if (read_write & DO_READ)
+ size += sizeof(ErtsSysFdData);
+
+ if ((read_write & DO_WRITE) &&
+ ((ifd != ofd || ofd == -1) || !(read_write & DO_READ)))
+ size += sizeof(ErtsSysFdData);
+
+ data = erts_alloc(ERTS_ALC_T_DRV_TAB,size);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, size);
+
+ driver_data = (ErtsSysDriverData*)data;
+ data += sizeof(*driver_data);
+
+ prt = erts_drvport2port(port_num);
+ if (prt != ERTS_INVALID_ERL_DRV_PORT)
+ prt->os_pid = pid;
+
+ driver_data->packet_bytes = packet_bytes;
+ driver_data->port_num = port_num;
+ driver_data->pid = pid;
+ driver_data->alive = exit_status ? 1 : 0;
+ driver_data->status = 0;
+ driver_data->terminating = 0;
+ driver_data->blocking = NULL;
+
+ if (read_write & DO_READ) {
+ driver_data->ifd = (ErtsSysFdData*)data;
+ data += sizeof(*driver_data->ifd);
+ init_fd_data(driver_data->ifd, ifd);
+ driver_select(port_num, ifd, (ERL_DRV_READ|ERL_DRV_USE), 1);
+ } else {
+ driver_data->ifd = NULL;
+ }
+
+ if (read_write & DO_WRITE) {
+ if (ofd != -1 && ifd == ofd && read_write & DO_READ) {
+ /* This is for when ifd and ofd are the same fd */
+ driver_data->ofd = driver_data->ifd;
+ } else {
+ driver_data->ofd = (ErtsSysFdData*)data;
+ data += sizeof(*driver_data->ofd);
+ init_fd_data(driver_data->ofd, ofd);
+ }
+ if (is_blocking && FDBLOCK)
+ if (!set_blocking_data(driver_data)) {
+ erts_free(ERTS_ALC_T_DRV_TAB, driver_data);
+ return NULL;
+ }
+ } else {
+ driver_data->ofd = NULL;
+ }
+
+ return driver_data;
+}
+
+/* Spawn driver */
+
+static void close_pipes(int ifd[2], int ofd[2])
+{
+ close(ifd[0]);
+ close(ifd[1]);
+ close(ofd[0]);
+ close(ofd[1]);
+}
+
+static char **build_unix_environment(char *block)
+{
+ int i;
+ int j;
+ int len;
+ char *cp;
+ char **cpp;
+ char** old_env;
+
+ ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
+
+ cp = block;
+ len = 0;
+ while (*cp != '\0') {
+ cp += strlen(cp) + 1;
+ len++;
+ }
+ old_env = environ;
+ while (*old_env++ != NULL) {
+ len++;
+ }
+
+ cpp = (char **) erts_alloc_fnf(ERTS_ALC_T_ENVIRONMENT,
+ sizeof(char *) * (len+1));
+ if (cpp == NULL) {
+ return NULL;
+ }
+
+ cp = block;
+ len = 0;
+ while (*cp != '\0') {
+ cpp[len] = cp;
+ cp += strlen(cp) + 1;
+ len++;
+ }
+
+ i = len;
+ for (old_env = environ; *old_env; old_env++) {
+ char* old = *old_env;
+
+ for (j = 0; j < len; j++) {
+ char *s, *t;
+
+ /* check if cpp[j] equals old
+ before the = sign,
+ i.e.
+ "TMPDIR=/tmp/" */
+ s = cpp[j];
+ t = old;
+ while (*s == *t && *s != '=') {
+ s++, t++;
+ }
+ if (*s == '=' && *t == '=') {
+ break;
+ }
+ }
+
+ if (j == len) { /* New version not found */
+ cpp[len++] = old;
+ }
+ }
+
+ for (j = 0; j < i; ) {
+ size_t last = strlen(cpp[j])-1;
+ if (cpp[j][last] == '=' && strchr(cpp[j], '=') == cpp[j]+last) {
+ cpp[j] = cpp[--len];
+ if (len < i) {
+ i--;
+ } else {
+ j++;
+ }
+ }
+ else {
+ j++;
+ }
+ }
+
+ cpp[len] = NULL;
+ return cpp;
+}
+
+static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+#define CMD_LINE_PREFIX_STR "exec "
+#define CMD_LINE_PREFIX_STR_SZ (sizeof(CMD_LINE_PREFIX_STR) - 1)
+
+ int len;
+ char **new_environ;
+ ErtsSysDriverData *dd;
+ char *cmd_line;
+ char wd_buff[MAXPATHLEN+1];
+ char *wd;
+ int ifd[2], ofd[2], stderrfd;
+
+ if (pipe(ifd) < 0) return ERL_DRV_ERROR_ERRNO;
+ errno = EMFILE; /* default for next three conditions */
+ if (ifd[0] >= sys_max_files() || pipe(ofd) < 0) {
+ close(ifd[0]);
+ close(ifd[1]);
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ if (ofd[1] >= sys_max_files()) {
+ close_pipes(ifd, ofd);
+ errno = EMFILE;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ SET_NONBLOCKING(ifd[0]);
+ SET_NONBLOCKING(ofd[1]);
+
+ stderrfd = opts->redir_stderr ? ifd[1] : dup(2);
+
+ if (stderrfd >= sys_max_files() || stderrfd < 0) {
+ close_pipes(ifd, ofd);
+ if (stderrfd > -1)
+ close(stderrfd);
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+ /* started with spawn_executable, not with spawn */
+ len = strlen(name);
+ cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, len + 1);
+ if (!cmd_line) {
+ close_pipes(ifd, ofd);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ memcpy((void *) cmd_line,(void *) name, len);
+ cmd_line[len] = '\0';
+ len = len + 1;
+ if (access(cmd_line,X_OK) != 0) {
+ int save_errno = errno;
+ erts_free(ERTS_ALC_T_TMP, cmd_line);
+ close_pipes(ifd, ofd);
+ errno = save_errno;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ } else {
+ /* make the string suitable for giving to "sh" */
+ len = strlen(name);
+ cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP,
+ CMD_LINE_PREFIX_STR_SZ + len + 1);
+ if (!cmd_line) {
+ close_pipes(ifd, ofd);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ memcpy((void *) cmd_line,
+ (void *) CMD_LINE_PREFIX_STR,
+ CMD_LINE_PREFIX_STR_SZ);
+ memcpy((void *) (cmd_line + CMD_LINE_PREFIX_STR_SZ), (void *) name, len);
+ cmd_line[CMD_LINE_PREFIX_STR_SZ + len] = '\0';
+ len = CMD_LINE_PREFIX_STR_SZ + len + 1;
+ }
+
+ erts_smp_rwmtx_rlock(&environ_rwmtx);
+
+ if (opts->envir == NULL) {
+ new_environ = environ;
+ } else if ((new_environ = build_unix_environment(opts->envir)) == NULL) {
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ if (opts->wd == NULL) {
+ if ((wd = getcwd(wd_buff, MAXPATHLEN+1)) == NULL) {
+ /* on some OSs this call opens a fd in the
+ background which means that this can
+ return EMFILE */
+ int err = errno;
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ errno = err;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ } else {
+ wd = opts->wd;
+ }
+
+ {
+ struct iovec *io_vector;
+ int iov_len = 5;
+ char nullbuff[] = "\0";
+ int j, i = 0, res;
+ Sint32 buffsz = 0, env_len = 0, argv_len = 0,
+ flags = (opts->use_stdio ? FORKER_FLAG_USE_STDIO : 0)
+ | (opts->exit_status ? FORKER_FLAG_EXIT_STATUS : 0)
+ | (opts->read_write & DO_READ ? FORKER_FLAG_DO_READ : 0)
+ | (opts->read_write & DO_WRITE ? FORKER_FLAG_DO_WRITE : 0);
+
+ /* count number of elements in environment */
+ while(new_environ[env_len] != NULL)
+ env_len++;
+ iov_len += 1 + env_len; /* num envs including size int */
+
+ /* count number of element in argument list */
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+ if (opts->argv != NULL) {
+ while(opts->argv[argv_len] != NULL)
+ argv_len++;
+ } else {
+ argv_len++;
+ }
+ iov_len += 1 + argv_len; /* num argvs including size int */
+ }
+
+ io_vector = erts_alloc_fnf(ERTS_ALC_T_TMP, sizeof(struct iovec) * iov_len);
+
+ if (!io_vector) {
+ close_pipes(ifd, ofd);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ io_vector[i].iov_base = (void*)&buffsz;
+ io_vector[i++].iov_len = sizeof(buffsz);
+
+ io_vector[i].iov_base = (void*)&flags;
+ flags = htonl(flags);
+ io_vector[i++].iov_len = sizeof(flags);
+ buffsz += sizeof(flags);
+
+ io_vector[i].iov_base = cmd_line;
+ io_vector[i++].iov_len = len;
+ buffsz += len;
+
+ io_vector[i].iov_base = wd;
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+
+ io_vector[i].iov_base = nullbuff;
+ io_vector[i++].iov_len = 1;
+ buffsz += io_vector[i-1].iov_len;
+
+ io_vector[i].iov_base = (void*)&env_len;
+ env_len = htonl(env_len);
+ io_vector[i++].iov_len = sizeof(env_len);
+ buffsz += io_vector[i-1].iov_len;
+
+ for (j = 0; new_environ[j] != NULL; j++) {
+ io_vector[i].iov_base = new_environ[j];
+ io_vector[i++].iov_len = strlen(new_environ[j]) + 1;
+ buffsz += io_vector[i-1].iov_len;
+ }
+
+ /* only append arguments if this was a spawn_executable */
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+
+ io_vector[i].iov_base = (void*)&argv_len;
+ argv_len = htonl(argv_len);
+ io_vector[i++].iov_len = sizeof(argv_len);
+ buffsz += io_vector[i-1].iov_len;
+
+ if (opts->argv) {
+ /* If there are arguments we copy in the references to
+ them into the iov */
+ for (j = 0; opts->argv[j]; j++) {
+ if (opts->argv[j] == erts_default_arg0)
+ io_vector[i].iov_base = cmd_line;
+ else
+ io_vector[i].iov_base = opts->argv[j];
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+ }
+ } else {
+ io_vector[i].iov_base = cmd_line;
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+ }
+ }
+
+ /* we send the request to do the fork */
+ if ((res = writev(ofd[1], io_vector, iov_len > MAXIOV ? MAXIOV : iov_len)) < 0) {
+ if (errno == ERRNO_BLOCK) {
+ res = 0;
+ } else {
+ int err = errno;
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, io_vector);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ errno = err;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ }
+
+ if (res < buffsz) {
+ /* we only wrote part of the command payload. Enqueue the rest. */
+ for (i = 0; i < iov_len; i++) {
+ driver_enq(port_num, io_vector[i].iov_base, io_vector[i].iov_len);
+ }
+ driver_deq(port_num, res);
+ driver_select(port_num, ofd[1], ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+
+ erts_free(ERTS_ALC_T_TMP, io_vector);
+ }
+
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+
+ dd = create_driver_data(port_num, ifd[0], ofd[1], opts->packet_bytes,
+ DO_WRITE | DO_READ, opts->exit_status,
+ 0, 0);
+
+ {
+ /* send ofd[0] + ifd[1] + stderrfd to forker port */
+ ErtsSysForkerProto *proto =
+ erts_alloc(ERTS_ALC_T_DRV_CTRL_DATA,
+ sizeof(ErtsSysForkerProto));
+ memset(proto, 0, sizeof(ErtsSysForkerProto));
+ proto->action = ErtsSysForkerProtoAction_Start;
+ proto->u.start.fds[0] = ofd[0];
+ proto->u.start.fds[1] = ifd[1];
+ proto->u.start.fds[2] = stderrfd;
+ proto->u.start.port_id = opts->exit_status ? erts_drvport2id(port_num) : THE_NON_VALUE;
+ if (erl_drv_port_control(forker_port, 'S', (char*)proto, sizeof(*proto))) {
+ /* The forker port has been killed, we close both fd's which will
+ make open_port throw an epipe error */
+ close(ofd[0]);
+ close(ifd[1]);
+ }
+ }
+
+ /* we set these fds to negative to mark if
+ they should be closed after the handshake */
+ if (!(opts->read_write & DO_READ))
+ dd->ifd->fd *= -1;
+
+ if (!(opts->read_write & DO_WRITE))
+ dd->ofd->fd *= -1;
+
+ return (ErlDrvData)dd;
+#undef CMD_LINE_PREFIX_STR
+#undef CMD_LINE_PREFIX_STR_SZ
+}
+
+static ErlDrvSSizeT spawn_control(ErlDrvData e, unsigned int cmd, char *buf,
+ ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)buf;
+
+ ASSERT(len == sizeof(*proto));
+ ASSERT(proto->action == ErtsSysForkerProtoAction_SigChld);
+
+ dd->status = proto->u.sigchld.error_number;
+ dd->alive = -1;
+
+ if (dd->ifd)
+ driver_select(dd->port_num, abs(dd->ifd->fd), ERL_DRV_READ | ERL_DRV_USE, 1);
+
+ if (dd->ofd)
+ driver_select(dd->port_num, abs(dd->ofd->fd), ERL_DRV_WRITE | ERL_DRV_USE, 1);
+
+ return 0;
+}
+
+#define FD_DEF_HEIGHT 24
+#define FD_DEF_WIDTH 80
+/* Control op */
+#define FD_CTRL_OP_GET_WINSIZE 100
+
+static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
+{
+#ifdef TIOCGWINSZ
+ struct winsize ws;
+ if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
+ *width = (Uint32) ws.ws_col;
+ *height = (Uint32) ws.ws_row;
+ return 0;
+ }
+#endif
+ return -1;
+}
+
+static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
+ unsigned int command,
+ char *buf, ErlDrvSizeT len,
+ char **rbuf, ErlDrvSizeT rlen)
+{
+ int fd = (int)(long)drv_data;
+ char resbuff[2*sizeof(Uint32)];
+ switch (command) {
+ case FD_CTRL_OP_GET_WINSIZE:
+ {
+ Uint32 w,h;
+ if (fd_get_window_size(fd,&w,&h))
+ return 0;
+ memcpy(resbuff,&w,sizeof(Uint32));
+ memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
+ }
+ break;
+ default:
+ return 0;
+ }
+ if (rlen < 2*sizeof(Uint32)) {
+ *rbuf = driver_alloc(2*sizeof(Uint32));
+ }
+ memcpy(*rbuf,resbuff,2*sizeof(Uint32));
+ return 2*sizeof(Uint32);
+}
+
+static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+ int non_blocking = 0;
+
+ if (((opts->read_write & DO_READ) && opts->ifd >= sys_max_files()) ||
+ ((opts->read_write & DO_WRITE) && opts->ofd >= sys_max_files()))
+ return ERL_DRV_ERROR_GENERAL;
+
+ /*
+ * Historical:
+ *
+ * "Note about nonblocking I/O.
+ *
+ * At least on Solaris, setting the write end of a TTY to nonblocking,
+ * will set the input end to nonblocking as well (and vice-versa).
+ * If erl is run in a pipeline like this: cat | erl
+ * the input end of the TTY will be the standard input of cat.
+ * And cat is not prepared to handle nonblocking I/O."
+ *
+ * Actually, the reason for this is not that the tty itself gets set
+ * in non-blocking mode, but that the "input end" (cat's stdin) and
+ * the "output end" (erlang's stdout) are typically the "same" file
+ * descriptor, dup()'ed from a single fd by one of this process'
+ * ancestors.
+ *
+ * The workaround for this problem used to be a rather bad kludge,
+ * interposing an extra process ("internal cat") between erlang's
+ * stdout and the original stdout, allowing erlang to set its stdout
+ * in non-blocking mode without affecting the stdin of the preceding
+ * process in the pipeline - and being a kludge, it caused all kinds
+ * of weird problems.
+ *
+ * So, this is the current logic:
+ *
+ * The only reason to set non-blocking mode on the output fd at all is
+ * if it's something that can cause a write() to block, of course,
+ * i.e. primarily if it points to a tty, socket, pipe, or fifo.
+ *
+ * If we don't set non-blocking mode when we "should" have, and output
+ * becomes blocked, the entire runtime system will be suspended - this
+ * is normally bad of course, and can happen fairly "easily" - e.g. user
+ * hits ^S on tty - but doesn't necessarily happen.
+ *
+ * If we do set non-blocking mode when we "shouldn't" have, the runtime
+ * system will end up seeing EOF on the input fd (due to the preceding
+ * process dying), which typically will cause the entire runtime system
+ * to terminate immediately (due to whatever erlang process is seeing
+ * the EOF taking it as a signal to halt the system). This is *very* bad.
+ *
+ * I.e. we should take a conservative approach, and only set non-
+ * blocking mode when we a) need to, and b) are reasonably certain
+ * that it won't be a problem. And as in the example above, the problem
+ * occurs when input fd and output fd point to different "things".
+ *
+ * However, determining that they are not just the same "type" of
+ * "thing", but actually the same instance of that type of thing, is
+ * unreasonably complex in many/most cases.
+ *
+ * Also, with pipes, sockets, and fifos it's far from obvious that the
+ * user *wants* non-blocking output: If you're running erlang inside
+ * some complex pipeline, you're probably not running a real-time system
+ * that must never stop, but rather *want* it to suspend if the output
+ * channel is "full".
+ *
+ * So, the bottom line: We will only set the output fd non-blocking if
+ * it points to a tty, and either a) the input fd also points to a tty,
+ * or b) we can make sure that setting the output fd non-blocking
+ * doesn't interfere with someone else's input, via a somewhat milder
+ * kludge than the above.
+ *
+ * Also keep in mind that while this code is almost exclusively run as
+ * a result of an erlang open_port({fd,0,1}, ...), that isn't the only
+ * case - it can be called with any old pre-existing file descriptors,
+ * the relations between which (if they're even two) we can only guess
+ * at - still, we try our best...
+ *
+ * Added note OTP 18: Some systems seem to use stdout/stderr to log data
+ * using unix pipes, so we cannot allow the system to block on a write.
+ * Therefore we use an async thread to write the data to fd's that could
+ * not be set to non-blocking. When no async threads are available we
+ * fall back on the old behaviour.
+ *
+ * Also the guarantee about what is delivered to the OS has changed.
+ * Pre 18 the fd driver did no flushing of data before terminating.
+ * Now it does. This is because we want to be able to guarantee that things
+ * such as escripts and friends really have outputted all data before
+ * terminating. This could potentially block the termination of the system
+ * for a very long time, but if the user wants to terminate fast she should
+ * use erlang:halt with flush=false.
+ */
+
+ /* Try to figure out if we can use non-blocking writes */
+ if (opts->read_write & DO_WRITE) {
+
+ /* If we don't have a read end, all bets are off - no non-blocking. */
+ if (opts->read_write & DO_READ) {
+
+ if (isatty(opts->ofd)) { /* output fd is a tty:-) */
+
+ if (isatty(opts->ifd)) { /* input fd is also a tty */
+
+ /* To really do this "right", we should also check that
+ input and output fd point to the *same* tty - but
+ this seems like overkill; ttyname() isn't for free,
+ and this is a very common case - and it's hard to
+ imagine a scenario where setting non-blocking mode
+ here would cause problems - go ahead and do it. */
+
+ non_blocking = 1;
+ SET_NONBLOCKING(opts->ofd);
+
+ } else { /* output fd is a tty, input fd isn't */
+
+ /* This is a "problem case", but also common (see the
+ example above) - i.e. it makes sense to try a bit
+ harder before giving up on non-blocking mode: Try to
+ re-open the tty that the output fd points to, and if
+ successful replace the original one with the "new" fd
+ obtained this way, and set *that* one in non-blocking
+ mode. (Yes, this is a kludge.)
+
+ However, re-opening the tty may fail in a couple of
+ (unusual) cases:
+
+ 1) The name of the tty (or an equivalent one, i.e.
+ same major/minor number) can't be found, because
+ it actually lives somewhere other than /dev (or
+ wherever ttyname() looks for it), and isn't
+ equivalent to any of those that do live in the
+ "standard" place - this should be *very* unusual.
+
+ 2) Permissions on the tty don't allow us to open it -
+ it's perfectly possible to have an fd open to an
+ object whose permissions wouldn't allow us to open
+ it. This is not as unusual as it sounds, one case
+ is if the user has su'ed to someone else (not
+ root) - we have a read/write fd open to the tty
+ (because it has been inherited all the way down
+ here), but we have neither read nor write
+ permission for the tty.
+
+ In these cases, we finally give up, and don't set the
+ output fd in non-blocking mode. */
+
+ char *tty;
+ int nfd;
+
+ if ((tty = ttyname(opts->ofd)) != NULL &&
+ (nfd = open(tty, O_WRONLY)) != -1) {
+ dup2(nfd, opts->ofd);
+ close(nfd);
+ non_blocking = 1;
+ SET_NONBLOCKING(opts->ofd);
+ }
+ }
+ }
+ }
+ }
+ return (ErlDrvData)create_driver_data(port_num, opts->ifd, opts->ofd,
+ opts->packet_bytes,
+ opts->read_write, 0, -1,
+ !non_blocking);
+}
+
+static void clear_fd_data(ErtsSysFdData *fdd)
+{
+ if (fdd->sz > 0) {
+ erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fdd->buf);
+ ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fdd->sz);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fdd->sz);
+ }
+ fdd->buf = NULL;
+ fdd->sz = 0;
+ fdd->remain = 0;
+ fdd->cpos = NULL;
+ fdd->psz = 0;
+}
+
+static void nbio_stop_fd(ErlDrvPort prt, ErtsSysFdData *fdd)
+{
+ driver_select(prt, abs(fdd->fd), DO_READ|DO_WRITE, 0);
+ clear_fd_data(fdd);
+ SET_BLOCKING(abs(fdd->fd));
+
+}
+
+static void fd_stop(ErlDrvData ev) /* Does not close the fds */
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ ErlDrvPort prt = dd->port_num;
+ int sz = sizeof(ErtsSysDriverData);
+
+#if FDBLOCK
+ if (dd->blocking) {
+ erts_free(ERTS_ALC_T_SYS_BLOCKING, dd->blocking);
+ dd->blocking = NULL;
+ sz += sizeof(ErtsSysBlocking);
+ }
+#endif
+
+ if (dd->ifd) {
+ sz += sizeof(ErtsSysFdData);
+ nbio_stop_fd(prt, dd->ifd);
+ }
+ if (dd->ofd && dd->ofd != dd->ifd) {
+ sz += sizeof(ErtsSysFdData);
+ nbio_stop_fd(prt, dd->ofd);
+ }
+
+ erts_free(ERTS_ALC_T_DRV_TAB, dd);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sz);
+}
+
+static void fd_flush(ErlDrvData ev)
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ if (!dd->terminating)
+ dd->terminating = 1;
+}
+
+static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+ int flags, fd;
+ ErlDrvData res;
+
+ flags = (opts->read_write == DO_READ ? O_RDONLY :
+ opts->read_write == DO_WRITE ? O_WRONLY|O_CREAT|O_TRUNC :
+ O_RDWR|O_CREAT);
+ if ((fd = open(name, flags, 0666)) < 0)
+ return ERL_DRV_ERROR_GENERAL;
+ if (fd >= sys_max_files()) {
+ close(fd);
+ return ERL_DRV_ERROR_GENERAL;
+ }
+ SET_NONBLOCKING(fd);
+
+ res = (ErlDrvData)(long)create_driver_data(port_num, fd, fd,
+ opts->packet_bytes,
+ opts->read_write, 0, -1, 0);
+ return res;
+}
+
+/* Note that driver_data[fd].ifd == fd if the port was opened for reading, */
+/* otherwise (i.e. write only) driver_data[fd].ofd = fd. */
+
+static void stop(ErlDrvData ev)
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ ErlDrvPort prt = dd->port_num;
+
+ if (dd->ifd) {
+ nbio_stop_fd(prt, dd->ifd);
+ driver_select(prt, abs(dd->ifd->fd), ERL_DRV_USE, 0); /* close(ifd); */
+ }
+
+ if (dd->ofd && dd->ofd != dd->ifd) {
+ nbio_stop_fd(prt, dd->ofd);
+ driver_select(prt, abs(dd->ofd->fd), ERL_DRV_USE, 0); /* close(ofd); */
+ }
+
+ erts_free(ERTS_ALC_T_DRV_TAB, dd);
+}
+
+/* used by fd_driver */
+static void outputv(ErlDrvData e, ErlIOVec* ev)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int pb = dd->packet_bytes;
+ int ofd = dd->ofd ? dd->ofd->fd : -1;
+ ssize_t n;
+ ErlDrvSizeT sz;
+ char lb[4];
+ char* lbp;
+ ErlDrvSizeT len = ev->size;
+
+ /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
+ /* if (pb >= 0 && (len & (((ErlDrvSizeT)1 << (pb*8))) - 1) != len) {*/
+ if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
+ driver_failure_posix(ix, EINVAL);
+ return; /* -1; */
+ }
+ /* Handles 0 <= pb <= 4 only */
+ put_int32((Uint32) len, lb);
+ lbp = lb + (4-pb);
+
+ ev->iov[0].iov_base = lbp;
+ ev->iov[0].iov_len = pb;
+ ev->size += pb;
+
+ if (dd->blocking && FDBLOCK)
+ driver_pdl_lock(dd->blocking->pdl);
+
+ if ((sz = driver_sizeq(ix)) > 0) {
+ driver_enqv(ix, ev, 0);
+
+ if (dd->blocking && FDBLOCK)
+ driver_pdl_unlock(dd->blocking->pdl);
+
+ if (sz + ev->size >= (1 << 13))
+ set_busy_port(ix, 1);
+ }
+ else if (!dd->blocking || !FDBLOCK) {
+ /* We try to write directly if the fd in non-blocking */
+ int vsize = ev->vsize > MAX_VSIZE ? MAX_VSIZE : ev->vsize;
+
+ n = writev(ofd, (const void *) (ev->iov), vsize);
+ if (n == ev->size)
+ return; /* 0;*/
+ if (n < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+ driver_failure_posix(ix, errno);
+ return; /* -1;*/
+ }
+ n = 0;
+ }
+ driver_enqv(ix, ev, n); /* n is the skip value */
+ driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+#if FDBLOCK
+ else {
+ if (ev->size != 0) {
+ driver_enqv(ix, ev, 0);
+ driver_pdl_unlock(dd->blocking->pdl);
+ driver_async(ix, &dd->blocking->pkey,
+ fd_async, dd, NULL);
+ } else {
+ driver_pdl_unlock(dd->blocking->pdl);
+ }
+ }
+#endif
+ /* return 0;*/
+}
+
+/* Used by spawn_driver and vanilla driver */
+static void output(ErlDrvData e, char* buf, ErlDrvSizeT len)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int pb = dd->packet_bytes;
+ int ofd = dd->ofd ? dd->ofd->fd : -1;
+ ssize_t n;
+ ErlDrvSizeT sz;
+ char lb[4];
+ char* lbp;
+ struct iovec iv[2];
+
+ /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
+ if (((pb == 2) && (len > 0xffff))
+ || (pb == 1 && len > 0xff)
+ || dd->pid == 0 /* Attempt at output before port is ready */) {
+ driver_failure_posix(ix, EINVAL);
+ return; /* -1; */
+ }
+ put_int32(len, lb);
+ lbp = lb + (4-pb);
+
+ if ((sz = driver_sizeq(ix)) > 0) {
+ driver_enq(ix, lbp, pb);
+ driver_enq(ix, buf, len);
+ if (sz + len + pb >= (1 << 13))
+ set_busy_port(ix, 1);
+ }
+ else {
+ iv[0].iov_base = lbp;
+ iv[0].iov_len = pb; /* should work for pb=0 */
+ iv[1].iov_base = buf;
+ iv[1].iov_len = len;
+ n = writev(ofd, iv, 2);
+ if (n == pb+len)
+ return; /* 0; */
+ if (n < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+ driver_failure_posix(ix, errno);
+ return; /* -1; */
+ }
+ n = 0;
+ }
+ if (n < pb) {
+ driver_enq(ix, lbp+n, pb-n);
+ driver_enq(ix, buf, len);
+ }
+ else {
+ n -= pb;
+ driver_enq(ix, buf+n, len-n);
+ }
+ driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+ return; /* 0; */
+}
+
+static int port_inp_failure(ErtsSysDriverData *dd, int res)
+ /* Result: 0 (eof) or -1 (error) */
+{
+ int err = errno;
+
+ ASSERT(res <= 0);
+ if (dd->ifd) {
+ driver_select(dd->port_num, dd->ifd->fd, ERL_DRV_READ|ERL_DRV_WRITE, 0);
+ clear_fd_data(dd->ifd);
+ }
+
+ if (dd->blocking && FDBLOCK) {
+ driver_pdl_lock(dd->blocking->pdl);
+ if (driver_sizeq(dd->port_num) > 0) {
+ driver_pdl_unlock(dd->blocking->pdl);
+ /* We have stuff in the output queue, so we just
+ set the state to terminating and wait for fd_async_ready
+ to terminate the port */
+ if (res == 0)
+ dd->terminating = 2;
+ else
+ dd->terminating = -err;
+ return 0;
+ }
+ driver_pdl_unlock(dd->blocking->pdl);
+ }
+
+ if (res == 0) {
+ if (dd->alive == 1) {
+ /*
+ * We have eof and want to report exit status, but the process
+ * hasn't exited yet. When it does ready_input will
+ * driver_select() this fd which will make sure that we get
+ * back here with dd->alive == -1 and dd->status set.
+ */
+ return 0;
+ }
+ else if (dd->alive == -1) {
+ int status = dd->status;
+
+ /* We need not be prepared for stopped/continued processes. */
+ if (WIFSIGNALED(status))
+ status = 128 + WTERMSIG(status);
+ else
+ status = WEXITSTATUS(status);
+ driver_report_exit(dd->port_num, status);
+ }
+ driver_failure_eof(dd->port_num);
+ } else if (dd->ifd) {
+ erl_drv_init_ack(dd->port_num, ERL_DRV_ERROR_ERRNO);
+ } else {
+ driver_failure_posix(dd->port_num, err);
+ }
+ return 0;
+}
+
+/* fd is the drv_data that is returned from the */
+/* initial start routine */
+/* ready_fd is the descriptor that is ready to read */
+
+static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort port_num;
+ int packet_bytes;
+ int res;
+ Uint h;
+
+ port_num = dd->port_num;
+ packet_bytes = dd->packet_bytes;
+
+ ASSERT(abs(dd->ifd->fd) == ready_fd);
+
+ if (dd->pid == 0) {
+ /* the pid is sent from erl_child_setup. spawn driver only. */
+ ErtsSysForkerProto proto;
+ int res;
+
+ if((res = read(ready_fd, &proto, sizeof(proto))) <= 0) {
+ /* hmm, child setup seems to have closed the pipe too early...
+ we close the port as there is not much else we can do */
+ if (res < 0 && errno == ERRNO_BLOCK)
+ return;
+ driver_select(port_num, ready_fd, ERL_DRV_READ, 0);
+ if (res == 0)
+ errno = EPIPE;
+ port_inp_failure(dd, -1);
+ return;
+ }
+
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Go);
+ dd->pid = proto.u.go.os_pid;
+
+ if (dd->pid == -1) {
+ /* Setup failed! The only reason why this should happen is if
+ the fork fails. */
+ errno = proto.u.go.error_number;
+ port_inp_failure(dd, -1);
+ return;
+ }
+
+ proto.action = ErtsSysForkerProtoAction_Ack;
+
+ if (driver_sizeq(port_num) > 0) {
+ driver_enq(port_num, (char*)&proto, sizeof(proto));
+ } else {
+ if (write(abs(dd->ofd->fd), &proto, sizeof(proto)) < 0)
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ driver_enq(port_num, (char*)&proto, sizeof(proto));
+ /* do nothing on failure here. If the ofd is broken, then
+ the ifd will probably also be broken and trigger
+ a port_inp_failure */
+ }
+
+ if (dd->ifd->fd < 0) {
+ driver_select(port_num, abs(dd->ifd->fd), ERL_DRV_READ|ERL_DRV_USE, 0);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sizeof(ErtsSysFdData));
+ dd->ifd = NULL;
+ }
+
+ if (dd->ofd->fd < 0 || driver_sizeq(port_num) > 0)
+ /* we select in order to close fd or write to queue,
+ child setup will close this fd if fd < 0 */
+ driver_select(port_num, abs(dd->ofd->fd), ERL_DRV_WRITE|ERL_DRV_USE, 1);
+
+ erl_drv_set_os_pid(port_num, dd->pid);
+ erl_drv_init_ack(port_num, e);
+ return;
+ }
+
+ if (packet_bytes == 0) {
+ byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
+ ERTS_SYS_READ_BUF_SZ);
+ res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0)
+ port_inp_failure(dd, res);
+ else
+ driver_output(port_num, (char*) read_buf, res);
+ erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
+ }
+ else if (dd->ifd->remain > 0) { /* We try to read the remainder */
+ /* space is allocated in buf */
+ res = read(ready_fd, dd->ifd->cpos,
+ dd->ifd->remain);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0) {
+ port_inp_failure(dd, res);
+ }
+ else if (res == dd->ifd->remain) { /* we're done */
+ driver_output(port_num, dd->ifd->buf,
+ dd->ifd->sz);
+ clear_fd_data(dd->ifd);
+ }
+ else { /* if (res < dd->ifd->remain) */
+ dd->ifd->cpos += res;
+ dd->ifd->remain -= res;
+ }
+ }
+ else if (dd->ifd->remain == 0) { /* clean fd */
+ byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
+ ERTS_SYS_READ_BUF_SZ);
+ /* We make one read attempt and see what happens */
+ res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0) { /* eof */
+ port_inp_failure(dd, res);
+ }
+ else if (res < packet_bytes - dd->ifd->psz) {
+ memcpy(dd->ifd->pbuf+dd->ifd->psz,
+ read_buf, res);
+ dd->ifd->psz += res;
+ }
+ else { /* if (res >= packet_bytes) */
+ unsigned char* cpos = read_buf;
+ int bytes_left = res;
+
+ while (1) {
+ int psz = dd->ifd->psz;
+ char* pbp = dd->ifd->pbuf + psz;
+
+ while(bytes_left && (psz < packet_bytes)) {
+ *pbp++ = *cpos++;
+ bytes_left--;
+ psz++;
+ }
+
+ if (psz < packet_bytes) {
+ dd->ifd->psz = psz;
+ break;
+ }
+ dd->ifd->psz = 0;
+
+ switch (packet_bytes) {
+ case 1: h = get_int8(dd->ifd->pbuf); break;
+ case 2: h = get_int16(dd->ifd->pbuf); break;
+ case 4: h = get_int32(dd->ifd->pbuf); break;
+ default: ASSERT(0); return; /* -1; */
+ }
+
+ if (h <= (bytes_left)) {
+ driver_output(port_num, (char*) cpos, h);
+ cpos += h;
+ bytes_left -= h;
+ continue;
+ }
+ else { /* The last message we got was split */
+ char *buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h);
+ if (!buf) {
+ errno = ENOMEM;
+ port_inp_failure(dd, -1);
+ }
+ else {
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, h);
+ sys_memcpy(buf, cpos, bytes_left);
+ dd->ifd->buf = buf;
+ dd->ifd->sz = h;
+ dd->ifd->remain = h - bytes_left;
+ dd->ifd->cpos = buf + bytes_left;
+ }
+ break;
+ }
+ }
+ }
+ erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
+ }
+}
+
+
+/* fd is the drv_data that is returned from the */
+/* initial start routine */
+/* ready_fd is the descriptor that is ready to read */
+
+static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int n;
+ struct iovec* iv;
+ int vsize;
+
+ if ((iv = (struct iovec*) driver_peekq(ix, &vsize)) == NULL) {
+ driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
+ if (dd->pid > 0 && dd->ofd->fd < 0) {
+ /* The port was opened with 'in' option, which means we
+ should close the output fd as soon as the command has
+ been sent. */
+ driver_select(ix, ready_fd, ERL_DRV_WRITE|ERL_DRV_USE, 0);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sizeof(ErtsSysFdData));
+ dd->ofd = NULL;
+ }
+ if (dd->terminating)
+ driver_failure_atom(dd->port_num,"normal");
+ return; /* 0; */
+ }
+ vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
+ if ((n = writev(ready_fd, iv, vsize)) > 0) {
+ if (driver_deq(ix, n) == 0)
+ set_busy_port(ix, 0);
+ }
+ else if (n < 0) {
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ return; /* 0; */
+ else {
+ int res = errno;
+ driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
+ driver_failure_posix(ix, res);
+ return; /* -1; */
+ }
+ }
+ return; /* 0; */
+}
+
+static void stop_select(ErlDrvEvent fd, void* _)
+{
+ close((int)fd);
+}
+
+#if FDBLOCK
+
+static void
+fd_async(void *async_data)
+{
+ int res;
+ ErtsSysDriverData *dd = (ErtsSysDriverData *)async_data;
+ SysIOVec *iov0;
+ SysIOVec *iov;
+ int iovlen;
+ int err = 0;
+ /* much of this code is stolen from efile_drv:invoke_writev */
+ driver_pdl_lock(dd->blocking->pdl);
+ iov0 = driver_peekq(dd->port_num, &iovlen);
+ iovlen = iovlen < MAXIOV ? iovlen : MAXIOV;
+ iov = erts_alloc_fnf(ERTS_ALC_T_SYS_WRITE_BUF,
+ sizeof(SysIOVec)*iovlen);
+ if (!iov) {
+ res = -1;
+ err = ENOMEM;
+ driver_pdl_unlock(dd->blocking->pdl);
+ } else {
+ memcpy(iov,iov0,iovlen*sizeof(SysIOVec));
+ driver_pdl_unlock(dd->blocking->pdl);
+
+ do {
+ res = writev(dd->ofd->fd, iov, iovlen);
+ } while (res < 0 && errno == EINTR);
+ if (res < 0)
+ err = errno;
+ err = errno;
+
+ erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov);
+ }
+ dd->blocking->res = res;
+ dd->blocking->err = err;
+}
+
+void fd_ready_async(ErlDrvData drv_data,
+ ErlDrvThreadData thread_data) {
+ ErtsSysDriverData *dd = (ErtsSysDriverData *)thread_data;
+ ErlDrvPort port_num = dd->port_num;
+
+ ASSERT(dd->blocking);
+
+ if (dd->blocking->res > 0) {
+ driver_pdl_lock(dd->blocking->pdl);
+ if (driver_deq(port_num, dd->blocking->res) == 0) {
+ driver_pdl_unlock(dd->blocking->pdl);
+ set_busy_port(port_num, 0);
+ if (dd->terminating) {
+ /* The port is has been ordered to terminate
+ from either fd_flush or port_inp_failure */
+ if (dd->terminating == 1)
+ driver_failure_atom(port_num, "normal");
+ else if (dd->terminating == 2)
+ driver_failure_eof(port_num);
+ else if (dd->terminating < 0)
+ driver_failure_posix(port_num, -dd->terminating);
+ return; /* -1; */
+ }
+ } else {
+ driver_pdl_unlock(dd->blocking->pdl);
+ /* still data left to write in queue */
+ driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
+ return /* 0; */;
+ }
+ } else if (dd->blocking->res < 0) {
+ if (dd->blocking->err == ERRNO_BLOCK) {
+ set_busy_port(port_num, 1);
+ /* still data left to write in queue */
+ driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
+ } else
+ driver_failure_posix(port_num, dd->blocking->err);
+ return; /* -1; */
+ }
+ return; /* 0; */
+}
+
+#endif
+
+/* Forker driver */
+
+static int forker_fd;
+
+static ErlDrvData forker_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+
+ int i;
+ int fds[2];
+ int res, unbind;
+ char bindir[MAXPATHLEN];
+ size_t bindirsz = sizeof(bindir);
+ Uint csp_path_sz;
+ char *child_setup_prog;
+
+ forker_port = erts_drvport2id(port_num);
+
+ res = erts_sys_getenv_raw("BINDIR", bindir, &bindirsz);
+ if (res != 0) {
+ if (res < 0)
+ erts_exit(1,
+ "Environment variable BINDIR is not set\n");
+ if (res > 0)
+ erts_exit(1,
+ "Value of environment variable BINDIR is too large\n");
+ }
+ if (bindir[0] != DIR_SEPARATOR_CHAR)
+ erts_exit(1,
+ "Environment variable BINDIR does not contain an"
+ " absolute path\n");
+ csp_path_sz = (strlen(bindir)
+ + 1 /* DIR_SEPARATOR_CHAR */
+ + sizeof(CHILD_SETUP_PROG_NAME)
+ + 1);
+ child_setup_prog = erts_alloc(ERTS_ALC_T_CS_PROG_PATH, csp_path_sz);
+ erts_snprintf(child_setup_prog, csp_path_sz,
+ "%s%c%s",
+ bindir,
+ DIR_SEPARATOR_CHAR,
+ CHILD_SETUP_PROG_NAME);
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
+ erts_exit(ERTS_ABORT_EXIT,
+ "Could not open unix domain socket in spawn_init: %d\n",
+ errno);
+ }
+
+ forker_fd = fds[0];
+
+ unbind = erts_sched_bind_atfork_prepare();
+
+ i = fork();
+
+ if (i == 0) {
+ /* The child */
+ char *cs_argv[FORKER_ARGV_NO_OF_ARGS] =
+ {CHILD_SETUP_PROG_NAME, NULL, NULL};
+ char buff[128];
+
+ erts_sched_bind_atfork_child(unbind);
+
+ snprintf(buff, 128, "%d", sys_max_files());
+ cs_argv[FORKER_ARGV_MAX_FILES] = buff;
+
+ /* We preallocate fd 3 for the uds fd */
+ if (fds[1] != 3) {
+ dup2(fds[1], 3);
+ }
+
+#if defined(USE_SETPGRP_NOARGS) /* SysV */
+ (void) setpgrp();
+#elif defined(USE_SETPGRP) /* BSD */
+ (void) setpgrp(0, getpid());
+#else /* POSIX */
+ (void) setsid();
+#endif
+
+ execv(child_setup_prog, cs_argv);
+ _exit(1);
+ }
+
+ erts_sched_bind_atfork_parent(unbind);
+
+ erts_free(ERTS_ALC_T_CS_PROG_PATH, child_setup_prog);
+
+ close(fds[1]);
+
+ SET_NONBLOCKING(forker_fd);
+
+ driver_select(port_num, forker_fd, ERL_DRV_READ|ERL_DRV_USE, 1);
+
+ return (ErlDrvData)port_num;
+}
+
+static void forker_stop(ErlDrvData e)
+{
+ /* we probably should do something here,
+ the port has been closed by the user. */
+}
+
+static void forker_ready_input(ErlDrvData e, ErlDrvEvent fd)
+{
+ int res;
+ ErtsSysForkerProto *proto;
+
+ proto = erts_alloc(ERTS_ALC_T_DRV_CTRL_DATA, sizeof(*proto));
+
+ if ((res = read(fd, proto, sizeof(*proto))) < 0) {
+ if (errno == ERRNO_BLOCK)
+ return;
+ erts_exit(ERTS_DUMP_EXIT, "Failed to read from erl_child_setup: %d\n", errno);
+ }
+
+ if (res == 0)
+ erts_exit(ERTS_DUMP_EXIT, "erl_child_setup closed\n");
+
+ ASSERT(res == sizeof(*proto));
+
+#ifdef FORKER_PROTO_START_ACK
+ if (proto->action == ErtsSysForkerProtoAction_StartAck) {
+ /* Ideally we would like to not have to ack each Start
+ command being sent over the uds, but it would seem
+ that some operating systems (only observed on FreeBSD)
+ throw away data on the uds when the socket becomes full,
+ so we have to.
+ */
+ ErlDrvPort port_num = (ErlDrvPort)e;
+ int vlen;
+ SysIOVec *iov = driver_peekq(port_num, &vlen);
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)iov[0].iov_base;
+
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+
+ driver_deq(port_num, sizeof(*proto));
+
+ if (driver_sizeq(port_num) > 0)
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ } else
+#endif
+ {
+ ASSERT(proto->action == ErtsSysForkerProtoAction_SigChld);
+
+ /* ideally this would be a port_command call, but as command is
+ already used by the spawn_driver, we use control instead.
+ Note that when using erl_drv_port_control it is an asynchronous
+ control. */
+ erl_drv_port_control(proto->u.sigchld.port_id, 'S',
+ (char*)proto, sizeof(*proto));
+ }
+
+}
+
+static void forker_ready_output(ErlDrvData e, ErlDrvEvent fd)
+{
+ ErlDrvPort port_num = (ErlDrvPort)e;
+
+#ifndef FORKER_PROTO_START_ACK
+ while (driver_sizeq(port_num) > 0) {
+#endif
+ int vlen;
+ SysIOVec *iov = driver_peekq(port_num, &vlen);
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)iov[0].iov_base;
+ ASSERT(iov[0].iov_len >= (sizeof(*proto)));
+ if (sys_uds_write(forker_fd, (char*)proto, sizeof(*proto),
+ proto->u.start.fds, 3, 0) < 0) {
+ if (errno == ERRNO_BLOCK)
+ return;
+ erts_exit(ERTS_DUMP_EXIT, "Failed to write to erl_child_setup: %d\n", errno);
+ }
+#ifndef FORKER_PROTO_START_ACK
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+ driver_deq(port_num, sizeof(*proto));
+ }
+#endif
+
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE, 0);
+}
+
+static ErlDrvSSizeT forker_control(ErlDrvData e, unsigned int cmd, char *buf,
+ ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen)
+{
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)buf;
+ ErlDrvPort port_num = (ErlDrvPort)e;
+ int res;
+
+ driver_enq(port_num, buf, len);
+ if (driver_sizeq(port_num) > sizeof(*proto)) {
+ return 0;
+ }
+
+ if ((res = sys_uds_write(forker_fd, (char*)proto, sizeof(*proto),
+ proto->u.start.fds, 3, 0)) < 0) {
+ if (errno == ERRNO_BLOCK) {
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ return 0;
+ }
+ erts_exit(ERTS_DUMP_EXIT, "Failed to write to erl_child_setup: %d\n", errno);
+ }
+
+#ifndef FORKER_PROTO_START_ACK
+ ASSERT(res == sizeof(*proto));
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+ driver_deq(port_num, sizeof(*proto));
+#endif
+
+ return 0;
+}
diff --git a/erts/emulator/sys/unix/sys_float.c b/erts/emulator/sys/unix/sys_float.c
index 1ef9e5eef7..89e2484b17 100644
--- a/erts/emulator/sys/unix/sys_float.c
+++ b/erts/emulator/sys/unix/sys_float.c
@@ -90,7 +90,7 @@ void erts_fp_check_init_error(volatile unsigned long *fpexnp)
snprintf(buf, sizeof buf, "ERTS_FP_CHECK_INIT at %p: detected unhandled FPE at %p\r\n",
__builtin_return_address(0), (void*)*fpexnp);
if (write(2, buf, strlen(buf)) <= 0)
- erl_exit(ERTS_ABORT_EXIT, "%s", buf);
+ erts_exit(ERTS_ABORT_EXIT, "%s", buf);
*fpexnp = 0;
#if defined(__i386__) || defined(__x86_64__)
erts_restore_fpu();
@@ -499,18 +499,8 @@ static int mask_fpe(void)
#define mc_pc(mc) ((mc)->gregs[REG_RIP])
#elif defined(__linux__) && defined(__i386__)
#define mc_pc(mc) ((mc)->gregs[REG_EIP])
-#elif defined(__DARWIN__) && defined(__i386__)
-#ifdef DARWIN_MODERN_MCONTEXT
-#define mc_pc(mc) ((mc)->__ss.__eip)
-#else
-#define mc_pc(mc) ((mc)->ss.eip)
-#endif
-#elif defined(__DARWIN__) && defined(__x86_64__)
-#ifdef DARWIN_MODERN_MCONTEXT
-#define mc_pc(mc) ((mc)->__ss.__rip)
-#else
-#define mc_pc(mc) ((mc)->ss.rip)
-#endif
+#elif defined(__DARWIN__)
+# error "Floating-point exceptions not supported on MacOS X"
#elif defined(__FreeBSD__) && defined(__x86_64__)
#define mc_pc(mc) ((mc)->mc_rip)
#elif defined(__FreeBSD__) && defined(__i386__)
@@ -575,17 +565,7 @@ static void fpe_sig_action(int sig, siginfo_t *si, void *puc)
regs[PT_FPSCR] = 0x80|0x40|0x10; /* VE, OE, ZE; not UE or XE */
#endif
#elif defined(__DARWIN__) && (defined(__i386__) || defined(__x86_64__))
-#ifdef DARWIN_MODERN_MCONTEXT
- mcontext_t mc = uc->uc_mcontext;
- pc = mc_pc(mc);
- mc->__fs.__fpu_mxcsr = 0x1F80;
- *(unsigned short *)&mc->__fs.__fpu_fsw &= ~0xFF;
-#else
- mcontext_t mc = uc->uc_mcontext;
- pc = mc_pc(mc);
- mc->fs.fpu_mxcsr = 0x1F80;
- *(unsigned short *)&mc->fs.fpu_fsw &= ~0xFF;
-#endif /* DARWIN_MODERN_MCONTEXT */
+# error "Floating-point exceptions not supported on MacOS X"
#elif defined(__DARWIN__) && defined(__ppc__)
mcontext_t mc = uc->uc_mcontext;
pc = mc->ss.srr0;
diff --git a/erts/emulator/sys/unix/sys_time.c b/erts/emulator/sys/unix/sys_time.c
index 2e1914f564..8ce02506ab 100644
--- a/erts/emulator/sys/unix/sys_time.c
+++ b/erts/emulator/sys/unix/sys_time.c
@@ -65,6 +65,8 @@
# include <fcntl.h>
#endif
+static void init_perf_counter(void);
+
/******************* Routines for time measurement *********************/
#undef ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__
@@ -342,7 +344,7 @@ sys_init_time(ErtsSysInitTimeResult *init_resp)
* times() (CLK_TCK), the resolution is always one millisecond..
*/
if ((erts_sys_time_data__.r.o.ticks_per_sec = TICKS_PER_SEC()) < 0)
- erl_exit(ERTS_ABORT_EXIT, "Can't get clock ticks/sec\n");
+ erts_exit(ERTS_ABORT_EXIT, "Can't get clock ticks/sec\n");
#if defined(OS_MONOTONIC_TIME_USING_TIMES)
#if ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT
@@ -404,6 +406,8 @@ sys_init_time(ErtsSysInitTimeResult *init_resp)
# error Missing erts_os_system_time() implementation
#endif
+ init_perf_counter();
+
}
void
@@ -450,7 +454,7 @@ posix_clock_gettime(clockid_t id, char *name)
if (clock_gettime(id, &ts) != 0) {
int err = errno;
char *errstr = err ? strerror(err) : "unknown";
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_gettime(%s, _) failed: %s (%d)\n",
name, errstr, err);
}
@@ -495,13 +499,13 @@ posix_clock_gettime_times(clockid_t mid, char *mname,
if (mres != 0) {
char *errstr = merr ? strerror(merr) : "unknown";
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_gettime(%s, _) failed: %s (%d)\n",
mname, errstr, merr);
}
if (sres != 0) {
char *errstr = serr ? strerror(serr) : "unknown";
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_gettime(%s, _) failed: %s (%d)\n",
sname, errstr, serr);
}
@@ -674,7 +678,7 @@ mach_clocks_init(void)
clck_srv_p = &internal_state.r.o.mach.clock.monotonic.srv;
kret = host_get_clock_service(host, id, clck_srv_p);
if (kret != KERN_SUCCESS) {
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"host_get_clock_service(_, %s, _) failed\n",
name);
}
@@ -686,7 +690,7 @@ mach_clocks_init(void)
clck_srv_p = &internal_state.r.o.mach.clock.wall.srv;
kret = host_get_clock_service(host, id, clck_srv_p);
if (kret != KERN_SUCCESS) {
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"host_get_clock_service(_, %s, _) failed\n",
name);
}
@@ -695,7 +699,7 @@ mach_clocks_init(void)
if (atexit(mach_clocks_fini) != 0) {
int err = errno;
char *errstr = err ? strerror(err) : "unknown";
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"Failed to register mach_clocks_fini() "
"for call at exit: %s (%d)\n",
errstr, err);
@@ -717,7 +721,7 @@ mach_clock_getres(ErtsMachClock *clk)
(clock_attr_t) attr,
&cnt);
if (kret != KERN_SUCCESS || cnt != 1) {
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_get_attributes(%s, _) failed\n",
clk->name);
}
@@ -735,7 +739,7 @@ mach_clock_get_time(ErtsMachClock *clk)
kret = clock_get_time(clk->srv, &time_spec);
if (kret != KERN_SUCCESS)
- erl_exit(ERTS_ABORT_EXIT, "clock_get_time(%s, _) failed\n", clk->name);
+ erts_exit(ERTS_ABORT_EXIT, "clock_get_time(%s, _) failed\n", clk->name);
return ERTS_TimeSpec2Sint64(&time_spec);
}
@@ -781,11 +785,11 @@ erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
&sys_time_spec);
if (mkret != KERN_SUCCESS)
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_get_time(%s, _) failed\n",
internal_state.r.o.mach.clock.monotonic.name);
if (skret != KERN_SUCCESS)
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"clock_get_time(%s, _) failed\n",
internal_state.r.o.mach.clock.wall.name);
@@ -850,7 +854,7 @@ erts_os_system_time(void)
if (gettimeofday(&tv, NULL) != 0) {
int err = errno;
char *errstr = err ? strerror(err) : "unknown";
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"gettimeofday(_, NULL) failed: %s (%d)\n",
errstr, err);
}
@@ -908,10 +912,120 @@ erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
#endif
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Performance counter functions *
+\* */
+
+
+/* What resolution to spin to in micro seconds */
+#define RESOLUTION 100
+/* How many iterations to spin */
+#define ITERATIONS 1
+/* How many significant figures to round to */
+#define SIGFIGS 3
+
+static ErtsSysPerfCounter calculate_perf_counter_unit(void) {
+ int i;
+ ErtsSysPerfCounter pre, post;
+ double value = 0;
+ double round_factor;
+#if defined(HAVE_GETHRTIME) && defined(GETHRTIME_WITH_CLOCK_GETTIME)
+ struct timespec basetime,comparetime;
+#define __GETTIME(arg) clock_gettime(CLOCK_MONOTONIC,arg)
+#define __GETUSEC(arg) (arg.tv_nsec / 1000)
+#else
+ SysTimeval basetime,comparetime;
+#define __GETTIME(arg) sys_gettimeofday(arg)
+#define __GETUSEC(arg) arg.tv_usec
+#endif
+
+ for (i = 0; i < ITERATIONS; i++) {
+ /* Make sure usec just flipped over at current resolution */
+ __GETTIME(&basetime);
+ do {
+ __GETTIME(&comparetime);
+ } while ((__GETUSEC(basetime) / RESOLUTION) == (__GETUSEC(comparetime) / RESOLUTION));
+
+ pre = erts_sys_perf_counter();
+
+ __GETTIME(&basetime);
+ do {
+ __GETTIME(&comparetime);
+ } while ((__GETUSEC(basetime) / RESOLUTION) == (__GETUSEC(comparetime) / RESOLUTION));
+
+ post = erts_sys_perf_counter();
+
+ value += post - pre;
+ }
+ /* After this value is ticks per us */
+ value /= (RESOLUTION*ITERATIONS);
+
+ /* We round to 3 significant figures */
+ round_factor = pow(10.0, SIGFIGS - ceil(log10(value)));
+ value = ((ErtsSysPerfCounter)(value * round_factor + 0.5)) / round_factor;
+
+ /* convert to ticks per second */
+ return 1000000 * value;
+}
+
+static int have_rdtscp(void)
+{
+#if defined(ETHR_X86_RUNTIME_CONF__)
+ /* On early x86 cpu's the tsc varies with the current speed of the cpu,
+ which means that the time per tick vary depending on the current
+ load of the cpu. We do not want this as it would give very scewed
+ numbers when the cpu is mostly idle.
+ The linux kernel seems to think that checking for constant and
+ reliable is enough to trust the counter so we do the same.
+
+ If this test is not good enough, I don't know what we'll do.
+ Maybe fallback on erts_sys_hrtime always, but that would be a shame as
+ rdtsc is about 3 times faster than hrtime... */
+ return ETHR_X86_RUNTIME_CONF_HAVE_CONSTANT_TSC__ &&
+ ETHR_X86_RUNTIME_CONF_HAVE_TSC_RELIABLE__;
+#else
+ return 0;
+#endif
+}
+
+static ErtsSysPerfCounter rdtsc(void)
+{
+ /* It may have been a good idea to put the cpuid instruction before
+ the rdtsc, but I decided against it because it is not really
+ needed for msacc, and it slows it down by quite a bit (5-7 times slower).
+ As a result though, this timestamp becomes much less
+ accurate as it might be re-ordered to be executed way before or after this
+ function is called.
+ */
+ ErtsSysPerfCounter ts;
+#if defined(__x86_64__)
+ __asm__ __volatile__ ("rdtsc\n\t"
+ "shl $32, %%rdx\n\t"
+ "or %%rdx, %0" : "=a" (ts) : : "rdx");
+#elif defined(__i386__)
+ __asm__ __volatile__ ("rdtsc\n\t"
+ : "=A" (ts) );
+#endif
+ return ts;
+}
+
+static void init_perf_counter(void)
+{
+ if (have_rdtscp()) {
+ erts_sys_time_data__.r.o.perf_counter = rdtsc;
+ erts_sys_time_data__.r.o.perf_counter_unit = calculate_perf_counter_unit();
+ } else {
+ erts_sys_time_data__.r.o.perf_counter = erts_sys_hrtime;
+ erts_sys_time_data__.r.o.perf_counter_unit = ERTS_HRTIME_UNIT;
+ }
+}
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifdef HAVE_GETHRVTIME_PROCFS_IOCTL
+/* The code below only has effect on solaris < 10,
+ needed in order for gehhrvtime to work properly */
int sys_start_hrvtime(void)
{
long msacct = PR_MSACCT;
diff --git a/erts/emulator/sys/unix/sys_uds.c b/erts/emulator/sys/unix/sys_uds.c
new file mode 100644
index 0000000000..015d0346a1
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_uds.c
@@ -0,0 +1,155 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "sys_uds.h"
+
+int
+sys_uds_readv(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags) {
+ struct msghdr msg;
+ struct cmsghdr *cmsg = NULL;
+ char ancillary_buff[256] = {0};
+ int res, i = 0;
+
+ /* setup a place to fill in message contents */
+ memset(&msg, 0, sizeof(struct msghdr));
+ msg.msg_iov = iov;
+ msg.msg_iovlen = iov_len;
+
+ /* provide space for the ancillary data */
+ msg.msg_control = ancillary_buff;
+ msg.msg_controllen = sizeof(ancillary_buff);
+
+ if((res = recvmsg(fd, &msg, flags)) < 0) {
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+ /* When some OS X versions run out of fd's
+ they give EMSGSIZE instead of EMFILE.
+ We remap this as we want the correct
+ error to appear for the user */
+ if (errno == EMSGSIZE)
+ errno = EMFILE;
+#endif
+ return res;
+ }
+
+ if((msg.msg_flags & MSG_CTRUNC) == MSG_CTRUNC)
+ {
+ /* We assume that we have given enough space for any header
+ that are sent to us. So the only remaining reason to get
+ this flag set is if the caller has run out of file descriptors.
+ */
+ errno = EMFILE;
+ return -1;
+ }
+
+ for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg) ) {
+ if ((cmsg->cmsg_level == SOL_SOCKET) &&
+ (cmsg->cmsg_type == SCM_RIGHTS)) {
+ int *cmsg_data = (int *)CMSG_DATA(cmsg);
+ while ((char*)cmsg_data < (char*)cmsg + cmsg->cmsg_len) {
+ if (i < fd_count) {
+ fds[i++] = *cmsg_data++;
+ } else {
+ /* for some strange reason, we have received more FD's
+ than we wanted... close them if we are not running
+ debug. */
+ if(i >= fd_count) abort();
+ close(*cmsg_data++);
+ }
+ }
+ }
+ }
+
+ return res;
+}
+
+int
+sys_uds_read(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags) {
+ struct iovec iov;
+ iov.iov_base = buff;
+ iov.iov_len = len;
+ return sys_uds_readv(fd, &iov, 1, fds, fd_count, flags);
+}
+
+
+int
+sys_uds_writev(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags) {
+
+ struct msghdr msg;
+ struct cmsghdr *cmsg = NULL;
+ int res, i;
+
+ /* initialize socket message */
+ memset(&msg, 0, sizeof(struct msghdr));
+
+ /* We flatten the iov if it is too long */
+ if (iov_len > MAXIOV) {
+ int size = 0;
+ char *buff;
+ for (i = 0; i < iov_len; i++)
+ size += iov[i].iov_len;
+ buff = malloc(size);
+
+ for (i = 0; i < iov_len; i++) {
+ memcpy(buff, iov[i].iov_base, iov[i].iov_len);
+ buff += iov[i].iov_len;
+ }
+
+ iov[0].iov_base = buff - size;
+ iov[0].iov_len = size;
+ msg.msg_iov = iov;
+ msg.msg_iovlen = 1;
+ } else {
+ msg.msg_iov = iov;
+ msg.msg_iovlen = iov_len;
+ }
+
+ /* initialize the ancillary data */
+ msg.msg_control = calloc(1, CMSG_SPACE(sizeof(int) * fd_count));
+ msg.msg_controllen = CMSG_SPACE(sizeof(int) * fd_count);
+
+ /* copy the fd array into the ancillary data */
+ cmsg = CMSG_FIRSTHDR(&msg);
+ if(!cmsg) abort();
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int) * fd_count);
+ memcpy(CMSG_DATA(cmsg), fds, sizeof(int) * fd_count);
+
+ res = sendmsg(fd, &msg, flags);
+
+ if (iov_len > MAXIOV)
+ free(iov[0].iov_base);
+
+ free(msg.msg_control);
+
+ return res;
+}
+
+int
+sys_uds_write(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags) {
+ struct iovec iov;
+ iov.iov_base = buff;
+ iov.iov_len = len;
+ return sys_uds_writev(fd, &iov, 1, fds, fd_count, flags);
+}
diff --git a/erts/emulator/sys/unix/sys_uds.h b/erts/emulator/sys/unix/sys_uds.h
new file mode 100644
index 0000000000..844a2804d8
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_uds.h
@@ -0,0 +1,57 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef _ERL_UNIX_UDS_H
+#define _ERL_UNIX_UDS_H
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#if defined(__sun__) && !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE 500
+#endif
+
+#include <limits.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
+#include "sys.h"
+
+int sys_uds_readv(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags);
+int sys_uds_read(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags);
+int sys_uds_writev(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags);
+int sys_uds_write(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags);
+
+#endif /* #ifndef _ERL_UNIX_UDS_H */
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c
index 466f4a3b48..9c1bef5f4f 100644
--- a/erts/emulator/sys/win32/erl_poll.c
+++ b/erts/emulator/sys/win32/erl_poll.c
@@ -27,6 +27,7 @@
#include "erl_alloc.h"
#include "erl_poll.h"
#include "erl_time.h"
+#include "erl_msacc.h"
/*
* Some debug macros
@@ -436,7 +437,7 @@ wakeup_cause(ErtsPollSet ps)
break;
default:
res = 0;
- erl_exit(ERTS_ABORT_EXIT,
+ erts_exit(ERTS_ABORT_EXIT,
"%s:%d: Internal error: Invalid wakeup_state=%d\n",
__FILE__, __LINE__, (int) wakeup_state);
}
@@ -576,7 +577,7 @@ static void signal_standby(ErtsPollSet ps)
--(ps->standby_wait_counter);
if (ps->standby_wait_counter < 0) {
LeaveCriticalSection(&(ps->standby_crit));
- erl_exit(1,"Standby signalled by more threads than expected");
+ erts_exit(ERTS_ERROR_EXIT,"Standby signalled by more threads than expected");
}
if (!(ps->standby_wait_counter)) {
SetEvent(ps->standby_wait_event);
@@ -738,7 +739,7 @@ static void *break_waiter(void *param)
erts_mtx_unlock(&break_waiter_lock);
break;
default:
- erl_exit(1,"Unexpected event in break_waiter");
+ erts_exit(ERTS_ERROR_EXIT,"Unexpected event in break_waiter");
}
}
}
@@ -1157,7 +1158,7 @@ int erts_poll_wait(ErtsPollSet ps,
HARDDEBUGF(("Oups!"));
/* Oups, got signalled before we took the lock, can't reset */
if(!is_io_ready(ps)) {
- erl_exit(1,"Internal error: "
+ erts_exit(ERTS_ERROR_EXIT,"Internal error: "
"Inconsistent io structures in erl_poll.\n");
}
START_WAITER(ps,w);
@@ -1188,16 +1189,19 @@ int erts_poll_wait(ErtsPollSet ps,
if (timeout > 0 && !erts_atomic32_read_nob(&break_waiter_state)) {
HANDLE harr[2] = {ps->event_io_ready, break_happened_event};
int num_h = 2;
+ ERTS_MSACC_PUSH_STATE_M();
HARDDEBUGF(("Start waiting %d [%d]",num_h, (int) timeout));
ERTS_POLLSET_UNLOCK(ps);
#ifdef ERTS_SMP
erts_thr_progress_prepare_wait(NULL);
#endif
+ ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
WaitForMultipleObjects(num_h, harr, FALSE, timeout);
#ifdef ERTS_SMP
erts_thr_progress_finalize_wait(NULL);
#endif
+ ERTS_MSACC_POP_STATE_M();
ERTS_POLLSET_LOCK(ps);
HARDDEBUGF(("Stop waiting %d [%d]",num_h, (int) timeout));
woke_up(ps);
@@ -1215,7 +1219,7 @@ int erts_poll_wait(ErtsPollSet ps,
ERTS_SET_BREAK_REQUESTED;
break;
case BREAK_WAITER_GOT_HALT:
- erl_exit(0,"");
+ erts_exit(0,"");
break;
default:
break;
diff --git a/erts/emulator/sys/win32/erl_win32_sys_ddll.c b/erts/emulator/sys/win32/erl_win32_sys_ddll.c
index 9a5557e93d..7c24a77e31 100644
--- a/erts/emulator/sys/win32/erl_win32_sys_ddll.c
+++ b/erts/emulator/sys/win32/erl_win32_sys_ddll.c
@@ -52,7 +52,8 @@ void erl_sys_ddll_init(void) {
#define ERL_NIF_API_FUNC_DECL(RET,NAME,ARGS) nif_callbacks.NAME = NAME
#include "erl_nif_api_funcs.h"
#undef ERL_NIF_API_FUNC_DECL
-
+ nif_callbacks.erts_alc_test = erts_alc_test;
+
return;
}
diff --git a/erts/emulator/sys/win32/erl_win_dyn_driver.h b/erts/emulator/sys/win32/erl_win_dyn_driver.h
index 5e62320be4..9c699fdba0 100644
--- a/erts/emulator/sys/win32/erl_win_dyn_driver.h
+++ b/erts/emulator/sys/win32/erl_win_dyn_driver.h
@@ -103,6 +103,11 @@ WDD_TYPEDEF(ErlDrvSInt, driver_pdl_inc_refc, (ErlDrvPDL));
WDD_TYPEDEF(ErlDrvSInt, driver_pdl_dec_refc, (ErlDrvPDL));
WDD_TYPEDEF(void, driver_system_info, (ErlDrvSysInfo *, size_t));
WDD_TYPEDEF(int, driver_get_now, (ErlDrvNowData *));
+WDD_TYPEDEF(ErlDrvTime, erl_drv_monotonic_time, (ErlDrvTimeUnit));
+WDD_TYPEDEF(ErlDrvTime, erl_drv_time_offset, (ErlDrvTimeUnit));
+WDD_TYPEDEF(ErlDrvTime, erl_drv_convert_time_unit, (ErlDrvTime,
+ ErlDrvTimeUnit,
+ ErlDrvTimeUnit));
WDD_TYPEDEF(int, driver_monitor_process, (ErlDrvPort port,
ErlDrvTermData process,
ErlDrvMonitor *monitor));
@@ -145,8 +150,8 @@ WDD_TYPEDEF(ErlDrvTid, erl_drv_thread_self, (void));
WDD_TYPEDEF(int, erl_drv_equal_tids, (ErlDrvTid tid1, ErlDrvTid tid2));
WDD_TYPEDEF(void, erl_drv_thread_exit, (void *resp));
WDD_TYPEDEF(int, erl_drv_thread_join, (ErlDrvTid, void **respp));
-WDD_TYPEDEF(int, erl_drv_putenv, (char *key, char *value));
-WDD_TYPEDEF(int, erl_drv_getenv, (char *key, char *value, size_t *value_size));
+WDD_TYPEDEF(int, erl_drv_putenv, (const char *key, char *value));
+WDD_TYPEDEF(int, erl_drv_getenv, (const char *key, char *value, size_t *value_size));
typedef struct {
WDD_FTYPE(null_func) *null_func;
@@ -217,6 +222,9 @@ typedef struct {
WDD_FTYPE(driver_pdl_dec_refc) *driver_pdl_dec_refc;
WDD_FTYPE(driver_system_info) *driver_system_info;
WDD_FTYPE(driver_get_now) *driver_get_now;
+ WDD_FTYPE(erl_drv_monotonic_time) *erl_drv_monotonic_time;
+ WDD_FTYPE(erl_drv_time_offset) *erl_drv_time_offset;
+ WDD_FTYPE(erl_drv_convert_time_unit) *erl_drv_convert_time_unit;
WDD_FTYPE(driver_monitor_process) *driver_monitor_process;
WDD_FTYPE(driver_demonitor_process) *driver_demonitor_process;
WDD_FTYPE(driver_get_monitored_process) *driver_get_monitored_process;
@@ -328,6 +336,9 @@ extern TWinDynDriverCallbacks WinDynDriverCallbacks;
#define driver_pdl_dec_refc (WinDynDriverCallbacks.driver_pdl_dec_refc)
#define driver_system_info (WinDynDriverCallbacks.driver_system_info)
#define driver_get_now (WinDynDriverCallbacks.driver_get_now)
+#define erl_drv_monotonic_time (WinDynDriverCallbacks.erl_drv_monotonic_time)
+#define erl_drv_time_offset (WinDynDriverCallbacks.erl_drv_time_offset)
+#define erl_drv_convert_time_unit (WinDynDriverCallbacks.erl_drv_convert_time_unit)
#define driver_monitor_process \
(WinDynDriverCallbacks.driver_monitor_process)
#define driver_demonitor_process \
@@ -463,6 +474,9 @@ do { \
((W).driver_pdl_dec_refc) = driver_pdl_dec_refc; \
((W).driver_system_info) = driver_system_info; \
((W).driver_get_now) = driver_get_now; \
+((W).erl_drv_monotonic_time) = erl_drv_monotonic_time; \
+((W).erl_drv_time_offset) = erl_drv_time_offset; \
+((W).erl_drv_convert_time_unit) = erl_drv_convert_time_unit; \
((W).driver_monitor_process) = driver_monitor_process; \
((W).driver_demonitor_process) = driver_demonitor_process; \
((W).driver_get_monitored_process) = driver_get_monitored_process; \
diff --git a/erts/emulator/sys/win32/erl_win_sys.h b/erts/emulator/sys/win32/erl_win_sys.h
index 7e8dd8a4ca..99c1066ab3 100644
--- a/erts/emulator/sys/win32/erl_win_sys.h
+++ b/erts/emulator/sys/win32/erl_win_sys.h
@@ -183,6 +183,7 @@ typedef LONGLONG ErtsSysHrTime;
#endif
typedef ErtsMonotonicTime ErtsSystemTime;
+typedef ErtsMonotonicTime ErtsSysPerfCounter;
ErtsSystemTime erts_os_system_time(void);
@@ -213,6 +214,7 @@ ERTS_GLB_INLINE ErtsMonotonicTime erts_os_monotonic_time(void);
ERTS_GLB_INLINE void erts_os_times(ErtsMonotonicTime *,
ErtsSystemTime *);
ERTS_GLB_INLINE ErtsSysHrTime erts_sys_hrtime(void);
+ERTS_GLB_INLINE ErtsSysPerfCounter erts_sys_perf_counter(void);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
@@ -234,6 +236,18 @@ erts_sys_hrtime(void)
return (*erts_sys_time_data__.r.o.sys_hrtime)();
}
+ERTS_GLB_INLINE ErtsSysPerfCounter
+erts_sys_perf_counter(void)
+{
+ return (*erts_sys_time_data__.r.o.sys_hrtime)();
+}
+
+ERTS_GLB_INLINE ErtsSysPerfCounter
+erts_sys_perf_counter_unit(void)
+{
+ return 1000 * 1000 * 1000;
+}
+
#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
extern void sys_gettimeofday(SysTimeval *tv);
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index fce76db28f..ea7523ddc2 100644
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -38,7 +38,7 @@
void erts_sys_init_float(void);
void erl_start(int, char**);
-void erl_exit(int n, char*, ...);
+void erts_exit(int n, char*, ...);
void erl_error(char*, va_list);
void erl_crash_dump(char*, int, char*, ...);
@@ -200,7 +200,7 @@ erts_sys_misc_mem_sz(void)
*/
void sys_tty_reset(int exit_code)
{
- if (exit_code > 0)
+ if (exit_code == ERTS_ERROR_EXIT)
ConWaitForExit();
else
ConNormalExit();
@@ -1334,10 +1334,8 @@ spawn_start(ErlDrvPort port_num, char* utf8_name, SysDriverOpts* opts)
retval = set_driver_data(dp, hFromChild, hToChild, opts->read_write,
opts->exit_status);
if (retval != ERL_DRV_ERROR_GENERAL && retval != ERL_DRV_ERROR_ERRNO) {
- Port *prt = erts_drvport2port(port_num);
- /* We assume that this cannot generate a negative number */
- ASSERT(prt != ERTS_INVALID_ERL_DRV_PORT);
- prt->os_pid = (SWord) pid;
+ /* We assume that this cannot generate a negative number */
+ erl_drv_set_os_pid(port_num, pid);
}
}
@@ -1528,8 +1526,8 @@ create_child_process
* Parse out the program name from the command line (it can be quoted and
* contain spaces).
*/
- newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, 2048*sizeof(wchar_t));
cmdlength = parse_command(origcmd);
+ newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, (MAX_PATH+wcslen(origcmd)-cmdlength)*sizeof(wchar_t));
thecommand = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, (cmdlength+1)*sizeof(wchar_t));
wcsncpy(thecommand, origcmd, cmdlength);
thecommand[cmdlength] = L'\0';
@@ -3110,13 +3108,13 @@ check_supported_os_version(void)
|| int_os_version.dwMajorVersion < major
|| (int_os_version.dwMajorVersion == major
&& int_os_version.dwMinorVersion < minor))
- erl_exit(-1,
+ erts_exit(1,
"Windows version not supported "
"(min required: winnt %d.%d)\n",
major, minor);
}
#else
- erl_exit(-1,
+ erts_exit(1,
"Windows version not supported "
"(min required: win %d.%d)\n",
nt_major, nt_minor);
@@ -3273,6 +3271,12 @@ void erl_sys_init(void)
}
void
+erl_sys_late_init(void)
+{
+ /* do nothing */
+}
+
+void
erts_sys_schedule_interrupt(int set)
{
erts_check_io_interrupt(set);
diff --git a/erts/emulator/sys/win32/sys_interrupt.c b/erts/emulator/sys/win32/sys_interrupt.c
index d6178de03c..a89211fa8e 100644
--- a/erts/emulator/sys/win32/sys_interrupt.c
+++ b/erts/emulator/sys/win32/sys_interrupt.c
@@ -81,7 +81,7 @@ BOOL WINAPI ctrl_handler_ignore_break(DWORD dwCtrlType)
return TRUE;
/* else pour through... */
case CTRL_CLOSE_EVENT:
- erl_exit(0, "");
+ erts_exit(0, "");
break;
}
return TRUE;
@@ -106,7 +106,7 @@ BOOL WINAPI ctrl_handler_replace_intr(DWORD dwCtrlType)
/* else pour through... */
case CTRL_CLOSE_EVENT:
case CTRL_SHUTDOWN_EVENT:
- erl_exit(0, "");
+ erts_exit(0, "");
break;
}
return TRUE;
@@ -133,7 +133,7 @@ BOOL WINAPI ctrl_handler(DWORD dwCtrlType)
return TRUE;
/* else pour through... */
case CTRL_CLOSE_EVENT:
- erl_exit(0, "");
+ erts_exit(0, "");
break;
}
return TRUE;
diff --git a/erts/emulator/sys/win32/sys_time.c b/erts/emulator/sys/win32/sys_time.c
index 9e5f78703a..9a9d90610d 100644
--- a/erts/emulator/sys/win32/sys_time.c
+++ b/erts/emulator/sys/win32/sys_time.c
@@ -147,7 +147,7 @@ os_monotonic_time_qpc(void)
LARGE_INTEGER pc;
if (!(*internal_state.r.o.pQueryPerformanceCounter)(&pc))
- erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+ erts_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
return (ErtsMonotonicTime) pc.QuadPart;
}
@@ -164,7 +164,7 @@ os_times_qpc(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
GetSystemTime(&st);
if (!qpcr)
- erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+ erts_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
*mtimep = (ErtsMonotonicTime) pc.QuadPart;
@@ -251,7 +251,7 @@ sys_hrtime_qpc(void)
LARGE_INTEGER pc;
if (!(*internal_state.r.o.pQueryPerformanceCounter)(&pc))
- erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+ erts_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
ASSERT(pc.QuadPart > 0);
@@ -397,6 +397,7 @@ sys_init_time(ErtsSysInitTimeResult *init_resp)
erts_sys_time_data__.r.o.os_monotonic_time = os_mtime_func;
erts_sys_time_data__.r.o.os_times = os_times_func;
+ erts_sys_time_data__.r.o.sys_hrtime = sys_hrtime_func;
init_resp->os_monotonic_time_unit = time_unit;
init_resp->have_os_monotonic_time = 1;
init_resp->have_corrected_os_monotonic_time = 0;