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authorSverker Eriksson <[email protected]>2016-02-24 17:55:04 +0100
committerSverker Eriksson <[email protected]>2016-02-24 17:55:04 +0100
commit03743cd4193a2ca97f9b9a52a25e63f616e8fc07 (patch)
tree9c1f4094a2105ec4bf19dd0d16e76b598d0e608d /erts/emulator/beam/erl_alloc_util.c
parent1b094d72ffc56069c72f17c7edd673dbbfe47e39 (diff)
parent35739bd06776f90526006486b3f4ab7e54f7f951 (diff)
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Merge branch 'master' into sverk/master/halt-INT_MIN
Diffstat (limited to 'erts/emulator/beam/erl_alloc_util.c')
-rw-r--r--erts/emulator/beam/erl_alloc_util.c360
1 files changed, 292 insertions, 68 deletions
diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c
index 18312eacde..a4e56a6ff7 100644
--- a/erts/emulator/beam/erl_alloc_util.c
+++ b/erts/emulator/beam/erl_alloc_util.c
@@ -751,12 +751,77 @@ internal_free(void *ptr)
#endif
+#ifdef ARCH_32
+
+/*
+ * Bit vector for the entire 32-bit virtual address space
+ * with one bit for each super aligned memory segment.
+ */
+
+#define VSPACE_MAP_BITS (1 << (32 - ERTS_MMAP_SUPERALIGNED_BITS))
+#define VSPACE_MAP_SZ (VSPACE_MAP_BITS / ERTS_VSPACE_WORD_BITS)
+
+static ERTS_INLINE void set_bit(UWord* map, Uint ix)
+{
+ ASSERT(ix / ERTS_VSPACE_WORD_BITS < VSPACE_MAP_SZ);
+ map[ix / ERTS_VSPACE_WORD_BITS]
+ |= ((UWord)1 << (ix % ERTS_VSPACE_WORD_BITS));
+}
+
+static ERTS_INLINE void clr_bit(UWord* map, Uint ix)
+{
+ ASSERT(ix / ERTS_VSPACE_WORD_BITS < VSPACE_MAP_SZ);
+ map[ix / ERTS_VSPACE_WORD_BITS]
+ &= ~((UWord)1 << (ix % ERTS_VSPACE_WORD_BITS));
+}
+
+static ERTS_INLINE int is_bit_set(UWord* map, Uint ix)
+{
+ ASSERT(ix / ERTS_VSPACE_WORD_BITS < VSPACE_MAP_SZ);
+ return map[ix / ERTS_VSPACE_WORD_BITS]
+ & ((UWord)1 << (ix % ERTS_VSPACE_WORD_BITS));
+}
+
+UWord erts_literal_vspace_map[VSPACE_MAP_SZ];
+
+static void set_literal_range(void* start, Uint size)
+{
+ Uint ix = (UWord)start >> ERTS_MMAP_SUPERALIGNED_BITS;
+ Uint n = size >> ERTS_MMAP_SUPERALIGNED_BITS;
+
+ ASSERT(!((UWord)start & ERTS_INV_SUPERALIGNED_MASK));
+ ASSERT(!((UWord)size & ERTS_INV_SUPERALIGNED_MASK));
+ ASSERT(n);
+ while (n--) {
+ ASSERT(!is_bit_set(erts_literal_vspace_map, ix));
+ set_bit(erts_literal_vspace_map, ix);
+ ix++;
+ }
+}
+
+static void clear_literal_range(void* start, Uint size)
+{
+ Uint ix = (UWord)start >> ERTS_MMAP_SUPERALIGNED_BITS;
+ Uint n = size >> ERTS_MMAP_SUPERALIGNED_BITS;
+
+ ASSERT(!((UWord)start & ERTS_INV_SUPERALIGNED_MASK));
+ ASSERT(!((UWord)size & ERTS_INV_SUPERALIGNED_MASK));
+ ASSERT(n);
+ while (n--) {
+ ASSERT(is_bit_set(erts_literal_vspace_map, ix));
+ clr_bit(erts_literal_vspace_map, ix);
+ ix++;
+ }
+}
+
+#endif /* ARCH_32 */
+
/* mseg ... */
#if HAVE_ERTS_MSEG
-static ERTS_INLINE void *
-alcu_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
+void*
+erts_alcu_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
{
void *res;
UWord size = (UWord) *size_p;
@@ -766,8 +831,9 @@ alcu_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
return res;
}
-static ERTS_INLINE void *
-alcu_mseg_realloc(Allctr_t *allctr, void *seg, Uint old_size, Uint *new_size_p)
+void*
+erts_alcu_mseg_realloc(Allctr_t *allctr, void *seg,
+ Uint old_size, Uint *new_size_p)
{
void *res;
UWord new_size = (UWord) *new_size_p;
@@ -778,17 +844,103 @@ alcu_mseg_realloc(Allctr_t *allctr, void *seg, Uint old_size, Uint *new_size_p)
return res;
}
-static ERTS_INLINE void
-alcu_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size, Uint flags)
+void
+erts_alcu_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size, Uint flags)
{
erts_mseg_dealloc_opt(allctr->alloc_no, seg, (UWord) size, flags, &allctr->mseg_opt);
INC_CC(allctr->calls.mseg_dealloc);
}
-#endif
-static ERTS_INLINE void *
-alcu_sys_alloc(Allctr_t *allctr, Uint size, int superalign)
+#if defined(ARCH_32)
+
+void*
+erts_alcu_literal_32_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
+{
+ void* res;
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ res = erts_alcu_mseg_alloc(allctr, size_p, flags);
+ if (res)
+ set_literal_range(res, *size_p);
+ return res;
+}
+
+void*
+erts_alcu_literal_32_mseg_realloc(Allctr_t *allctr, void *seg,
+ Uint old_size, Uint *new_size_p)
+{
+ void* res;
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ if (seg && old_size)
+ clear_literal_range(seg, old_size);
+ res = erts_alcu_mseg_realloc(allctr, seg, old_size, new_size_p);
+ if (res)
+ set_literal_range(res, *new_size_p);
+ return res;
+}
+
+void
+erts_alcu_literal_32_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size,
+ Uint flags)
+{
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ erts_alcu_mseg_dealloc(allctr, seg, size, flags);
+
+ clear_literal_range(seg, size);
+}
+
+#elif defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+
+void*
+erts_alcu_literal_64_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
+{
+ void* res;
+ UWord size = (UWord) *size_p;
+ Uint32 mmap_flags = ERTS_MMAPFLG_SUPERCARRIER_ONLY;
+ if (flags & ERTS_MSEG_FLG_2POW)
+ mmap_flags |= ERTS_MMAPFLG_SUPERALIGNED;
+
+ res = erts_mmap(&erts_literal_mmapper, mmap_flags, &size);
+ *size_p = (Uint)size;
+ INC_CC(allctr->calls.mseg_alloc);
+ return res;
+}
+
+void*
+erts_alcu_literal_64_mseg_realloc(Allctr_t *allctr, void *seg,
+ Uint old_size, Uint *new_size_p)
+{
+ void *res;
+ UWord new_size = (UWord) *new_size_p;
+ res = erts_mremap(&erts_literal_mmapper, ERTS_MSEG_FLG_NONE, seg, old_size, &new_size);
+ *new_size_p = (Uint) new_size;
+ INC_CC(allctr->calls.mseg_realloc);
+ return res;
+}
+
+void
+erts_alcu_literal_64_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size,
+ Uint flags)
+{
+ Uint32 mmap_flags = ERTS_MMAPFLG_SUPERCARRIER_ONLY;
+ if (flags & ERTS_MSEG_FLG_2POW)
+ mmap_flags |= ERTS_MMAPFLG_SUPERALIGNED;
+
+ erts_munmap(&erts_literal_mmapper, mmap_flags, seg, (UWord)size);
+ INC_CC(allctr->calls.mseg_dealloc);
+}
+#endif /* ARCH_64 && ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION */
+
+#endif /* HAVE_ERTS_MSEG */
+
+void*
+erts_alcu_sys_alloc(Allctr_t *allctr, Uint size, int superalign)
{
void *res;
#if ERTS_SA_MB_CARRIERS && ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC
@@ -803,8 +955,8 @@ alcu_sys_alloc(Allctr_t *allctr, Uint size, int superalign)
return res;
}
-static ERTS_INLINE void *
-alcu_sys_realloc(Allctr_t *allctr, void *ptr, Uint size, Uint old_size, int superalign)
+void*
+erts_alcu_sys_realloc(Allctr_t *allctr, void *ptr, Uint size, Uint old_size, int superalign)
{
void *res;
@@ -824,8 +976,8 @@ alcu_sys_realloc(Allctr_t *allctr, void *ptr, Uint size, Uint old_size, int supe
return res;
}
-static ERTS_INLINE void
-alcu_sys_free(Allctr_t *allctr, void *ptr, int superalign)
+void
+erts_alcu_sys_dealloc(Allctr_t *allctr, void *ptr, Uint size, int superalign)
{
#if ERTS_SA_MB_CARRIERS && ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC
if (superalign)
@@ -838,6 +990,49 @@ alcu_sys_free(Allctr_t *allctr, void *ptr, int superalign)
erts_mtrace_crr_free(allctr->alloc_no, ERTS_ALC_A_SYSTEM, ptr);
}
+#ifdef ARCH_32
+
+void*
+erts_alcu_literal_32_sys_alloc(Allctr_t *allctr, Uint size, int superalign)
+{
+ void* res;
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ res = erts_alcu_sys_alloc(allctr, size, 1);
+ if (res)
+ set_literal_range(res, size);
+ return res;
+}
+
+void*
+erts_alcu_literal_32_sys_realloc(Allctr_t *allctr, void *ptr, Uint size, Uint old_size, int superalign)
+{
+ void* res;
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ if (ptr && old_size)
+ clear_literal_range(ptr, old_size);
+ res = erts_alcu_sys_realloc(allctr, ptr, size, old_size, 1);
+ if (res)
+ set_literal_range(res, size);
+ return res;
+}
+
+void
+erts_alcu_literal_32_sys_dealloc(Allctr_t *allctr, void *ptr, Uint size, int superalign)
+{
+ ERTS_LC_ASSERT(allctr->alloc_no == ERTS_ALC_A_LITERAL
+ && !allctr->t && allctr->thread_safe);
+
+ erts_alcu_sys_dealloc(allctr, ptr, size, 1);
+
+ clear_literal_range(ptr, size);
+}
+
+#endif /* ARCH_32 */
+
static Uint
get_next_mbc_size(Allctr_t *allctr)
{
@@ -2084,7 +2279,7 @@ mbc_alloc_block(Allctr_t *allctr, Uint size, Uint *blk_szp)
if (!blk) {
blk = create_carrier(allctr, get_blk_sz, CFLG_MBC);
-#if !HALFWORD_HEAP && !ERTS_SUPER_ALIGNED_MSEG_ONLY
+#if !ERTS_SUPER_ALIGNED_MSEG_ONLY
if (!blk) {
/* Emergency! We couldn't create the carrier as we wanted.
Try to place it in a sys_alloced sbc. */
@@ -3531,8 +3726,7 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
int is_mseg = 0;
#endif
- if (HALFWORD_HEAP
- || (ERTS_SUPER_ALIGNED_MSEG_ONLY && (flags & CFLG_MBC))
+ if ((ERTS_SUPER_ALIGNED_MSEG_ONLY && (flags & CFLG_MBC))
|| !allow_sys_alloc_carriers) {
flags |= CFLG_FORCE_MSEG;
flags &= ~CFLG_FORCE_SYS_ALLOC;
@@ -3540,6 +3734,8 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
return NULL;
#endif
}
+ flags |= allctr->crr_set_flgs;
+ flags &= ~allctr->crr_clr_flgs;
ASSERT((flags & CFLG_SBC && !(flags & CFLG_MBC))
|| (flags & CFLG_MBC && !(flags & CFLG_SBC)));
@@ -3555,7 +3751,21 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
return NULL;
}
- blk_sz = UMEMSZ2BLKSZ(allctr, umem_sz);
+ if (flags & CFLG_MAIN_CARRIER) {
+ ASSERT(flags & CFLG_MBC);
+ ASSERT(flags & CFLG_NO_CPOOL);
+ ASSERT(umem_sz == allctr->main_carrier_size);
+ ERTS_UNDEF(blk_sz, 0);
+
+ if (allctr->main_carrier_size < allctr->min_mbc_size)
+ allctr->main_carrier_size = allctr->min_mbc_size;
+ crr_sz = bcrr_sz = allctr->main_carrier_size;
+ }
+ else {
+ ERTS_UNDEF(bcrr_sz, 0);
+ ERTS_UNDEF(crr_sz, 0);
+ blk_sz = UMEMSZ2BLKSZ(allctr, umem_sz);
+ }
#ifdef ERTS_SMP
allctr->cpool.disable_abandon = ERTS_ALC_CPOOL_MAX_DISABLE_ABANDON;
@@ -3601,13 +3811,15 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
mseg_flags = ERTS_MSEG_FLG_NONE;
}
else {
- crr_sz = (*allctr->get_next_mbc_size)(allctr);
- if (crr_sz < MBC_HEADER_SIZE(allctr) + blk_sz)
- crr_sz = MBC_HEADER_SIZE(allctr) + blk_sz;
- mseg_flags = ERTS_MSEG_FLG_2POW;
+ if (!(flags & CFLG_MAIN_CARRIER)) {
+ crr_sz = (*allctr->get_next_mbc_size)(allctr);
+ if (crr_sz < MBC_HEADER_SIZE(allctr) + blk_sz)
+ crr_sz = MBC_HEADER_SIZE(allctr) + blk_sz;
+ }
+ mseg_flags = ERTS_MSEG_FLG_2POW;
}
- crr = (Carrier_t *) alcu_mseg_alloc(allctr, &crr_sz, mseg_flags);
+ crr = (Carrier_t *) allctr->mseg_alloc(allctr, &crr_sz, mseg_flags);
if (!crr) {
have_tried_mseg = 1;
if (!(have_tried_sys_alloc || flags & CFLG_FORCE_MSEG))
@@ -3639,23 +3851,22 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
if (flags & CFLG_SBC) {
bcrr_sz = blk_sz + SBC_HEADER_SIZE;
}
- else {
+ else if (!(flags & CFLG_MAIN_CARRIER)) {
bcrr_sz = MBC_HEADER_SIZE(allctr) + blk_sz;
- if (!(flags & CFLG_MAIN_CARRIER)
- && bcrr_sz < allctr->smallest_mbc_size)
- bcrr_sz = allctr->smallest_mbc_size;
+ if (bcrr_sz < allctr->smallest_mbc_size)
+ bcrr_sz = allctr->smallest_mbc_size;
}
crr_sz = (flags & CFLG_FORCE_SIZE
? UNIT_CEILING(bcrr_sz)
: SYS_ALLOC_CARRIER_CEILING(bcrr_sz));
- crr = (Carrier_t *) alcu_sys_alloc(allctr, crr_sz, flags & CFLG_MBC);
+ crr = (Carrier_t *) allctr->sys_alloc(allctr, crr_sz, flags & CFLG_MBC);
if (!crr) {
if (crr_sz > UNIT_CEILING(bcrr_sz)) {
crr_sz = UNIT_CEILING(bcrr_sz);
- crr = (Carrier_t *) alcu_sys_alloc(allctr, crr_sz, flags & CFLG_MBC);
+ crr = (Carrier_t *) allctr->sys_alloc(allctr, crr_sz, flags & CFLG_MBC);
}
if (!crr) {
#if HAVE_ERTS_MSEG
@@ -3754,7 +3965,7 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
new_crr_sz = new_blk_sz + SBC_HEADER_SIZE;
new_crr_sz = ERTS_SACRR_UNIT_CEILING(new_crr_sz);
- new_crr = (Carrier_t *) alcu_mseg_realloc(allctr,
+ new_crr = (Carrier_t *) allctr->mseg_realloc(allctr,
old_crr,
old_crr_sz,
&new_crr_sz);
@@ -3769,11 +3980,6 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
DEBUG_SAVE_ALIGNMENT(new_crr);
return new_blk;
}
-#if HALFWORD_HEAP
- /* Old carrier unchanged; restore stat */
- STAT_MSEG_SBC_ALLOC(allctr, old_crr_sz, old_blk_sz);
- return NULL;
-#endif
create_flags |= CFLG_FORCE_SYS_ALLOC; /* since mseg_realloc()
failed */
}
@@ -3784,7 +3990,7 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
(void *) BLK2UMEM(old_blk),
MIN(new_blk_sz, old_blk_sz) - ABLK_HDR_SZ);
unlink_carrier(&allctr->sbc_list, old_crr);
- alcu_mseg_dealloc(allctr, old_crr, old_crr_sz, ERTS_MSEG_FLG_NONE);
+ allctr->mseg_dealloc(allctr, old_crr, old_crr_sz, ERTS_MSEG_FLG_NONE);
}
else {
/* Old carrier unchanged; restore stat */
@@ -3801,7 +4007,7 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
? UNIT_CEILING(new_bcrr_sz)
: SYS_ALLOC_CARRIER_CEILING(new_bcrr_sz));
- new_crr = (Carrier_t *) alcu_sys_realloc(allctr,
+ new_crr = (Carrier_t *) allctr->sys_realloc(allctr,
(void *) old_crr,
new_crr_sz,
old_crr_sz,
@@ -3822,7 +4028,7 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
else if (new_crr_sz > UNIT_CEILING(new_bcrr_sz)) {
new_crr_sz = new_blk_sz + SBC_HEADER_SIZE;
new_crr_sz = UNIT_CEILING(new_crr_sz);
- new_crr = (Carrier_t *) alcu_sys_realloc(allctr,
+ new_crr = (Carrier_t *) allctr->sys_realloc(allctr,
(void *) old_crr,
new_crr_sz,
old_crr_sz,
@@ -3845,7 +4051,7 @@ resize_carrier(Allctr_t *allctr, Block_t *old_blk, Uint umem_sz, UWord flags)
(void *) BLK2UMEM(old_blk),
MIN(new_blk_sz, old_blk_sz) - ABLK_HDR_SZ);
unlink_carrier(&allctr->sbc_list, old_crr);
- alcu_sys_free(allctr, old_crr, 0);
+ allctr->sys_dealloc(allctr, old_crr, CARRIER_SZ(old_crr), 0);
}
else {
/* Old carrier unchanged; restore... */
@@ -3861,13 +4067,13 @@ dealloc_carrier(Allctr_t *allctr, Carrier_t *crr, int superaligned)
{
#if HAVE_ERTS_MSEG
if (IS_MSEG_CARRIER(crr))
- alcu_mseg_dealloc(allctr, crr, CARRIER_SZ(crr),
+ allctr->mseg_dealloc(allctr, crr, CARRIER_SZ(crr),
(superaligned
? ERTS_MSEG_FLG_2POW
: ERTS_MSEG_FLG_NONE));
else
#endif
- alcu_sys_free(allctr, crr, superaligned);
+ allctr->sys_dealloc(allctr, crr, CARRIER_SZ(crr), superaligned);
}
static void
@@ -3962,9 +4168,6 @@ static struct {
Eterm e;
Eterm t;
Eterm ramv;
-#if HALFWORD_HEAP
- Eterm low;
-#endif
Eterm sbct;
#if HAVE_ERTS_MSEG
Eterm asbcst;
@@ -4055,9 +4258,6 @@ init_atoms(Allctr_t *allctr)
AM_INIT(e);
AM_INIT(t);
AM_INIT(ramv);
-#if HALFWORD_HEAP
- AM_INIT(low);
-#endif
AM_INIT(sbct);
#if HAVE_ERTS_MSEG
AM_INIT(asbcst);
@@ -4663,9 +4863,6 @@ info_options(Allctr_t *allctr,
"option e: true\n"
"option t: %s\n"
"option ramv: %s\n"
-#if HALFWORD_HEAP
- "option low: %s\n"
-#endif
"option sbct: %beu\n"
#if HAVE_ERTS_MSEG
"option asbcst: %bpu\n"
@@ -4684,9 +4881,6 @@ info_options(Allctr_t *allctr,
"option acul: %d\n",
topt,
allctr->ramv ? "true" : "false",
-#if HALFWORD_HEAP
- allctr->mseg_opt.low_mem ? "true" : "false",
-#endif
allctr->sbc_threshold,
#if HAVE_ERTS_MSEG
allctr->mseg_opt.abs_shrink_th,
@@ -4749,9 +4943,6 @@ info_options(Allctr_t *allctr,
add_2tup(hpp, szp, &res,
am.sbct,
bld_uint(hpp, szp, allctr->sbc_threshold));
-#if HALFWORD_HEAP
- add_2tup(hpp, szp, &res, am.low, allctr->mseg_opt.low_mem ? am_true : am_false);
-#endif
add_2tup(hpp, szp, &res, am.ramv, allctr->ramv ? am_true : am_false);
add_2tup(hpp, szp, &res, am.t, (allctr->t ? am_true : am_false));
add_2tup(hpp, szp, &res, am.e, am_true);
@@ -5146,6 +5337,11 @@ do_erts_alcu_alloc(ErtsAlcType_t type, void *extra, Uint size)
void *erts_alcu_alloc(ErtsAlcType_t type, void *extra, Uint size)
{
void *res;
+#ifdef ERTS_SMP
+ ASSERT(!"This is not thread safe");
+#elif defined(USE_THREADS)
+ ASSERT(erts_equal_tids(erts_main_thread, erts_thr_self()));
+#endif
res = do_erts_alcu_alloc(type, extra, size);
DEBUG_CHECK_ALIGNMENT(res);
return res;
@@ -5436,11 +5632,7 @@ do_erts_alcu_realloc(ErtsAlcType_t type,
Block_t *new_blk;
if(IS_SBC_BLK(blk)) {
do_carrier_resize:
-#if HALFWORD_HEAP
- new_blk = resize_carrier(allctr, blk, size, CFLG_SBC | CFLG_FORCE_MSEG);
-#else
new_blk = resize_carrier(allctr, blk, size, CFLG_SBC);
-#endif
res = new_blk ? BLK2UMEM(new_blk) : NULL;
}
else if (alcu_flgs & ERTS_ALCU_FLG_FAIL_REALLOC_MOVE)
@@ -5734,11 +5926,8 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
#ifdef ERTS_SMP
if (init->tspec || init->tpref)
allctr->mseg_opt.sched_spec = 1;
-#endif
-# if HALFWORD_HEAP
- allctr->mseg_opt.low_mem = init->low_mem;
-# endif
-#endif
+#endif /* ERTS_SMP */
+#endif /* HAVE_ERTS_MSEG */
allctr->name_prefix = init->name_prefix;
if (!allctr->name_prefix)
@@ -5887,17 +6076,52 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
+ ABLK_HDR_SZ)
- ABLK_HDR_SZ);
+ if (init->sys_alloc) {
+ ASSERT(init->sys_realloc && init->sys_dealloc);
+ allctr->sys_alloc = init->sys_alloc;
+ allctr->sys_realloc = init->sys_realloc;
+ allctr->sys_dealloc = init->sys_dealloc;
+ }
+ else {
+ ASSERT(!init->sys_realloc && !init->sys_dealloc);
+ allctr->sys_alloc = &erts_alcu_sys_alloc;
+ allctr->sys_realloc = &erts_alcu_sys_realloc;
+ allctr->sys_dealloc = &erts_alcu_sys_dealloc;
+ }
+#if HAVE_ERTS_MSEG
+ if (init->mseg_alloc) {
+ ASSERT(init->mseg_realloc && init->mseg_dealloc);
+ allctr->mseg_alloc = init->mseg_alloc;
+ allctr->mseg_realloc = init->mseg_realloc;
+ allctr->mseg_dealloc = init->mseg_dealloc;
+ }
+ else {
+ ASSERT(!init->mseg_realloc && !init->mseg_dealloc);
+ allctr->mseg_alloc = &erts_alcu_mseg_alloc;
+ allctr->mseg_realloc = &erts_alcu_mseg_realloc;
+ allctr->mseg_dealloc = &erts_alcu_mseg_dealloc;
+ }
+ /* If a custom carrier alloc function is specified, make sure it's used */
+ if (init->mseg_alloc && !init->sys_alloc) {
+ allctr->crr_set_flgs = CFLG_FORCE_MSEG;
+ allctr->crr_clr_flgs = CFLG_FORCE_SYS_ALLOC;
+ }
+ else if (!init->mseg_alloc && init->sys_alloc) {
+ allctr->crr_set_flgs = CFLG_FORCE_SYS_ALLOC;
+ allctr->crr_clr_flgs = CFLG_FORCE_MSEG;
+ }
+#endif
+
if (allctr->main_carrier_size) {
Block_t *blk;
blk = create_carrier(allctr,
allctr->main_carrier_size,
- CFLG_MBC
+ (ERTS_SUPER_ALIGNED_MSEG_ONLY
+ ? CFLG_FORCE_MSEG : CFLG_FORCE_SYS_ALLOC)
+ | CFLG_MBC
| CFLG_FORCE_SIZE
| CFLG_NO_CPOOL
-#if !HALFWORD_HEAP && !ERTS_SUPER_ALIGNED_MSEG_ONLY
- | CFLG_FORCE_SYS_ALLOC
-#endif
| CFLG_MAIN_CARRIER);
if (!blk) {
#ifdef USE_THREADS