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-rw-r--r--erts/emulator/beam/atom.names5
-rw-r--r--erts/emulator/beam/beam_emu.c14
-rw-r--r--erts/emulator/beam/bif.c30
-rw-r--r--erts/emulator/beam/erl_alloc.c2
-rw-r--r--erts/emulator/beam/erl_bif_info.c37
-rw-r--r--erts/emulator/beam/erl_gc.c218
-rw-r--r--erts/emulator/beam/erl_init.c21
-rw-r--r--erts/emulator/beam/erl_message.c160
-rw-r--r--erts/emulator/beam/erl_message.h2
-rw-r--r--erts/emulator/beam/erl_process.c27
-rw-r--r--erts/emulator/beam/erl_process.h34
-rw-r--r--erts/emulator/hipe/hipe_native_bif.c6
-rw-r--r--erts/emulator/test/Makefile1
-rw-r--r--erts/emulator/test/message_queue_data_SUITE.erl239
14 files changed, 684 insertions, 112 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index ea04495574..7424e47ec3 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -350,6 +350,7 @@ atom memory_internal
atom memory_types
atom message
atom message_binary
+atom message_queue_data
atom message_queue_len
atom messages
atom merge_trap
@@ -361,6 +362,7 @@ atom min_heap_size
atom min_bin_vheap_size
atom minor_version
atom Minus='-'
+atom mixed
atom module
atom module_info
atom monitored_by
@@ -423,11 +425,12 @@ atom notify
atom notsup
atom nouse_stdio
atom objects
-atom off_heap_message_queue
+atom off_heap
atom offset
atom ok
atom old_heap_block_size
atom old_heap_size
+atom on_heap
atom on_load
atom open
atom open_error
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 1a4133bceb..30cc0c6814 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -1843,8 +1843,8 @@ void process_main(void)
* in the queue. This since messages with data outside
* the heap will be corrupted by a GC.
*/
- ASSERT(!(c_p->flags & F_DISABLE_GC));
- c_p->flags |= F_DISABLE_GC;
+ ASSERT(!(c_p->flags & F_DELAY_GC));
+ c_p->flags |= F_DELAY_GC;
loop_rec__:
PROCESS_MAIN_CHK_LOCKS(c_p);
@@ -1858,7 +1858,7 @@ void process_main(void)
if (ERTS_PROC_PENDING_EXIT(c_p)) {
erts_smp_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
SWAPOUT;
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
goto do_schedule; /* Will be rescheduled for exit */
}
ERTS_SMP_MSGQ_MV_INQ2PRIVQ(c_p);
@@ -1868,7 +1868,7 @@ void process_main(void)
else
#endif
{
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
SET_I((BeamInstr *) Arg(0));
Goto(*I); /* Jump to a wait or wait_timeout instruction */
}
@@ -1978,7 +1978,7 @@ void process_main(void)
CANCEL_TIMER(c_p);
erts_save_message_in_proc(c_p, msgp);
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
if (ERTS_IS_GC_DESIRED_INTERNAL(c_p, HTOP, E)) {
/*
@@ -2000,7 +2000,7 @@ void process_main(void)
*/
OpCase(loop_rec_end_f): {
- ASSERT(c_p->flags & F_DISABLE_GC);
+ ASSERT(c_p->flags & F_DELAY_GC);
SET_I((BeamInstr *) Arg(0));
SAVE_MESSAGE(c_p);
@@ -2009,7 +2009,7 @@ void process_main(void)
goto loop_rec__;
}
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
c_p->i = I;
SWAPOUT;
c_p->arity = 0;
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index 886b19fe6e..bb9165cd79 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -910,13 +910,22 @@ BIF_RETTYPE spawn_opt_1(BIF_ALIST_1)
so.priority = PRIORITY_LOW;
else
goto error;
- } else if (arg == am_off_heap_message_queue) {
- if (val == am_true)
- so.flags |= SPO_OFF_HEAP_MSGQ;
- else if (val == am_false)
+ } else if (arg == am_message_queue_data) {
+ switch (val) {
+ case am_mixed:
+ so.flags &= ~(SPO_OFF_HEAP_MSGQ|SPO_ON_HEAP_MSGQ);
+ break;
+ case am_on_heap:
so.flags &= ~SPO_OFF_HEAP_MSGQ;
- else
+ so.flags |= SPO_ON_HEAP_MSGQ;
+ break;
+ case am_off_heap:
+ so.flags &= ~SPO_ON_HEAP_MSGQ;
+ so.flags |= SPO_OFF_HEAP_MSGQ;
+ break;
+ default:
goto error;
+ }
} else if (arg == am_min_heap_size && is_small(val)) {
Sint min_heap_size = signed_val(val);
if (min_heap_size < 0) {
@@ -1695,15 +1704,10 @@ BIF_RETTYPE process_flag_2(BIF_ALIST_2)
}
BIF_RET(old_value);
}
- else if (BIF_ARG_1 == am_off_heap_message_queue) {
- int enable;
- if (BIF_ARG_2 == am_true)
- enable = 1;
- else if (BIF_ARG_2 == am_false)
- enable = 0;
- else
+ else if (BIF_ARG_1 == am_message_queue_data) {
+ old_value = erts_change_message_queue_management(BIF_P, BIF_ARG_2);
+ if (is_non_value(old_value))
goto error;
- old_value = erts_change_off_heap_message_queue_state(BIF_P, enable);
BIF_RET(old_value);
}
else if (BIF_ARG_1 == am_sensitive) {
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 99458b4268..5544712e8d 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -292,7 +292,7 @@ static void
set_default_literal_alloc_opts(struct au_init *ip)
{
SET_DEFAULT_ALLOC_OPTS(ip);
- ip->enable = AU_ALLOC_DEFAULT_ENABLE(1);
+ ip->enable = 1;
ip->thr_spec = 0;
ip->atype = BESTFIT;
ip->init.bf.ao = 1;
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 82c2aa4b9e..f952f937ce 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -592,7 +592,7 @@ static Eterm pi_args[] = {
am_min_bin_vheap_size,
am_current_location,
am_current_stacktrace,
- am_off_heap_message_queue
+ am_message_queue_data
};
#define ERTS_PI_ARGS ((int) (sizeof(pi_args)/sizeof(Eterm)))
@@ -640,7 +640,7 @@ pi_arg2ix(Eterm arg)
case am_min_bin_vheap_size: return 28;
case am_current_location: return 29;
case am_current_stacktrace: return 30;
- case am_off_heap_message_queue: return 31;
+ case am_message_queue_data: return 31;
default: return -1;
}
}
@@ -1499,8 +1499,22 @@ process_info_aux(Process *BIF_P,
break;
}
- case am_off_heap_message_queue:
- res = BIF_P->flags & F_OFF_HEAP_MSGQ ? am_true : am_false;
+ case am_message_queue_data:
+ switch (rp->flags & (F_OFF_HEAP_MSGQ|F_ON_HEAP_MSGQ)) {
+ case F_OFF_HEAP_MSGQ:
+ res = am_off_heap;
+ break;
+ case F_ON_HEAP_MSGQ:
+ res = am_on_heap;
+ break;
+ case 0:
+ res = am_mixed;
+ break;
+ default:
+ res = am_error;
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ break;
+ }
hp = HAlloc(BIF_P, 3);
break;
@@ -2665,9 +2679,18 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
BIF_RET(am_true);
}
#endif
- else if (BIF_ARG_1 == am_off_heap_message_queue) {
- BIF_RET(erts_default_spo_flags & SPO_OFF_HEAP_MSGQ
- ? am_true : am_false);
+ else if (BIF_ARG_1 == am_message_queue_data) {
+ switch (erts_default_spo_flags & (SPO_ON_HEAP_MSGQ|SPO_OFF_HEAP_MSGQ)) {
+ case SPO_OFF_HEAP_MSGQ:
+ BIF_RET(am_off_heap);
+ case SPO_ON_HEAP_MSGQ:
+ BIF_RET(am_on_heap);
+ case 0:
+ BIF_RET(am_mixed);
+ default:
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ BIF_RET(am_error);
+ }
}
else if (ERTS_IS_ATOM_STR("compile_info",BIF_ARG_1)) {
Uint sz;
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index c50756d56b..15226074c3 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -145,6 +145,7 @@ static void offset_rootset(Process *p, Sint offs, char* area, Uint area_size,
Eterm* objv, int nobj);
static void offset_off_heap(Process* p, Sint offs, char* area, Uint area_size);
static void offset_mqueue(Process *p, Sint offs, char* area, Uint area_size);
+static void move_msgq_to_heap(Process *p);
static void init_gc_info(ErtsGCInfo *gcip);
@@ -440,8 +441,15 @@ delay_garbage_collection(Process *p, ErlHeapFragment *live_hf_end, int need)
ERTS_HOLE_CHECK(p);
- if (p->live_hf_end == ERTS_INVALID_HFRAG_PTR)
+ if ((p->flags & F_DISABLE_GC)
+ && p->live_hf_end == ERTS_INVALID_HFRAG_PTR) {
+ /*
+ * A BIF yielded with disabled GC. Remember
+ * heap fragments created by the BIF until we
+ * do next GC.
+ */
p->live_hf_end = live_hf_end;
+ }
if (need == 0)
return 1;
@@ -513,6 +521,14 @@ young_gen_usage(Process *p)
Eterm *aheap;
hsz = p->mbuf_sz;
+
+ if (p->flags & F_ON_HEAP_MSGQ) {
+ ErtsMessage *mp;
+ for (mp = p->msg.first; mp; mp = mp->next)
+ if (mp->data.attached)
+ hsz += erts_msg_attached_data_size(mp);
+ }
+
aheap = p->abandoned_heap;
if (!aheap)
hsz += p->htop - p->heap;
@@ -564,10 +580,12 @@ garbage_collect(Process* p, ErlHeapFragment *live_hf_end,
DTRACE_CHARBUF(pidbuf, DTRACE_TERM_BUF_SIZE);
#endif
- if (p->flags & F_DISABLE_GC)
+ if (p->flags & (F_DISABLE_GC|F_DELAY_GC))
return delay_garbage_collection(p, live_hf_end, need);
- if (p->live_hf_end != ERTS_INVALID_HFRAG_PTR)
+ if (p->abandoned_heap)
+ live_hf_end = ERTS_INVALID_HFRAG_PTR;
+ else if (p->live_hf_end != ERTS_INVALID_HFRAG_PTR)
live_hf_end = p->live_hf_end;
esdp = erts_get_scheduler_data();
@@ -734,6 +752,12 @@ erts_garbage_collect_hibernate(Process* p)
p->arg_reg,
p->arity);
+ ERTS_HEAP_FREE(ERTS_ALC_T_HEAP,
+ (p->abandoned_heap
+ ? p->abandoned_heap
+ : p->heap),
+ p->heap_sz * sizeof(Eterm));
+
p->heap = heap;
p->high_water = htop;
p->htop = htop;
@@ -1025,10 +1049,13 @@ minor_collection(Process* p, ErlHeapFragment *live_hf_end,
do_minor(p, live_hf_end, (char *) mature, mature_size*sizeof(Eterm),
new_sz, objv, nobj);
+ if (p->flags & F_ON_HEAP_MSGQ)
+ move_msgq_to_heap(p);
+
new_mature = p->old_htop - prev_old_htop;
size_after = new_mature;
- size_after += HEAP_TOP(p) - HEAP_START(p);
+ size_after += HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz;
*recl += (size_before - size_after);
ErtsGcQuickSanityCheck(p);
@@ -1441,7 +1468,7 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
(p->abandoned_heap
? p->abandoned_heap
: HEAP_START(p)),
- (HEAP_END(p) - HEAP_START(p)) * sizeof(Eterm));
+ p->heap_sz * sizeof(Eterm));
p->abandoned_heap = NULL;
p->flags &= ~F_ABANDONED_HEAP_USE;
HEAP_START(p) = n_heap;
@@ -1452,9 +1479,14 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
HIGH_WATER(p) = HEAP_TOP(p);
+ remove_message_buffers(p);
+
+ if (p->flags & F_ON_HEAP_MSGQ)
+ move_msgq_to_heap(p);
+
ErtsGcQuickSanityCheck(p);
- size_after = HEAP_TOP(p) - HEAP_START(p);
+ size_after = HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz;
*recl += size_before - size_after;
adjusted = adjust_after_fullsweep(p, need, objv, nobj);
@@ -1462,8 +1494,6 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
#ifdef HARDDEBUG
disallow_heap_frag_ref_in_heap(p);
#endif
- remove_message_buffers(p);
-
ErtsGcQuickSanityCheck(p);
return gc_cost(size_after, adjusted ? size_after : 0);
@@ -1991,6 +2021,173 @@ collect_live_heap_frags(Process* p, ErlHeapFragment *live_hf_end,
return n_htop;
}
+static ERTS_INLINE void
+copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
+ ErlHeapFragment *bp, Eterm *refs, int nrefs)
+{
+ Uint sz;
+ int i;
+ Sint offs;
+ struct erl_off_heap_header* oh;
+ Eterm *fhp, *hp;
+
+ OH_OVERHEAD(off_heap, bp->off_heap.overhead);
+ sz = bp->used_size;
+
+ fhp = bp->mem;
+ hp = *hpp;
+ offs = hp - fhp;
+
+ oh = NULL;
+ while (sz--) {
+ Uint cpy_sz;
+ Eterm val = *fhp++;
+
+ switch (primary_tag(val)) {
+ case TAG_PRIMARY_IMMED1:
+ *hp++ = val;
+ break;
+ case TAG_PRIMARY_LIST:
+ case TAG_PRIMARY_BOXED:
+ *hp++ = offset_ptr(val, offs);
+ break;
+ case TAG_PRIMARY_HEADER:
+ *hp++ = val;
+ switch (val & _HEADER_SUBTAG_MASK) {
+ case ARITYVAL_SUBTAG:
+ break;
+ case REFC_BINARY_SUBTAG:
+ case FUN_SUBTAG:
+ case EXTERNAL_PID_SUBTAG:
+ case EXTERNAL_PORT_SUBTAG:
+ case EXTERNAL_REF_SUBTAG:
+ oh = (struct erl_off_heap_header*) (hp-1);
+ cpy_sz = thing_arityval(val);
+ goto cpy_words;
+ default:
+ cpy_sz = header_arity(val);
+
+ cpy_words:
+ ASSERT(sz >= cpy_sz);
+ sz -= cpy_sz;
+ while (cpy_sz >= 8) {
+ cpy_sz -= 8;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ }
+ switch (cpy_sz) {
+ case 7: *hp++ = *fhp++;
+ case 6: *hp++ = *fhp++;
+ case 5: *hp++ = *fhp++;
+ case 4: *hp++ = *fhp++;
+ case 3: *hp++ = *fhp++;
+ case 2: *hp++ = *fhp++;
+ case 1: *hp++ = *fhp++;
+ default: break;
+ }
+ if (oh) {
+ /* Add to offheap list */
+ oh->next = off_heap->first;
+ off_heap->first = oh;
+ ASSERT(*hpp <= (Eterm*)oh);
+ ASSERT(hp > (Eterm*)oh);
+ oh = NULL;
+ }
+ break;
+ }
+ break;
+ }
+ }
+
+ ASSERT(bp->used_size == hp - *hpp);
+ *hpp = hp;
+
+ for (i = 0; i < nrefs; i++) {
+ if (is_not_immed(refs[i]))
+ refs[i] = offset_ptr(refs[i], offs);
+ }
+ bp->off_heap.first = NULL;
+}
+
+static void
+move_msgq_to_heap(Process *p)
+{
+ ErtsMessage **mpp = &p->msg.first;
+
+ while (*mpp) {
+ ErtsMessage *mp = *mpp;
+
+ if (mp->data.attached) {
+ ErlHeapFragment *bp;
+ ErtsHeapFactory factory;
+
+ erts_factory_proc_prealloc_init(&factory, p,
+ erts_msg_attached_data_size(mp));
+
+ if (is_non_value(ERL_MESSAGE_TERM(mp))) {
+ if (mp->data.dist_ext) {
+ ASSERT(mp->data.dist_ext->heap_size >= 0);
+ if (is_not_nil(ERL_MESSAGE_TOKEN(mp))) {
+ bp = erts_dist_ext_trailer(mp->data.dist_ext);
+ ERL_MESSAGE_TOKEN(mp) = copy_struct(ERL_MESSAGE_TOKEN(mp),
+ bp->used_size,
+ &factory.hp,
+ factory.off_heap);
+ erts_cleanup_offheap(&bp->off_heap);
+ }
+ ERL_MESSAGE_TERM(mp) = erts_decode_dist_ext(&factory,
+ mp->data.dist_ext);
+ erts_free_dist_ext_copy(mp->data.dist_ext);
+ mp->data.dist_ext = NULL;
+ }
+ }
+ else {
+
+ if (mp->data.attached == ERTS_MSG_COMBINED_HFRAG)
+ bp = &mp->hfrag;
+ else
+ bp = mp->data.heap_frag;
+
+ if (bp->next)
+ erts_move_multi_frags(&factory.hp, factory.off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ, 0);
+ else
+ copy_one_frag(&factory.hp, factory.off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ);
+
+ if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ mp->data.heap_frag = NULL;
+ free_message_buffer(bp);
+ }
+ else {
+ ErtsMessage *tmp = erts_alloc_message(0, NULL);
+ sys_memcpy((void *) tmp->m, (void *) mp->m,
+ sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ);
+ tmp->next = mp->next;
+ if (p->msg.save == &mp->next)
+ p->msg.save = &tmp->next;
+ if (p->msg.last == &mp->next)
+ p->msg.last = &tmp->next;
+ *mpp = tmp;
+ mp->next = NULL;
+ erts_cleanup_messages(mp);
+ mp = tmp;
+ }
+ }
+
+ erts_factory_close(&factory);
+ }
+
+ mpp = &(*mpp)->next;
+ }
+}
+
static Uint
setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
{
@@ -2080,9 +2277,8 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
case F_OFF_HEAP_MSGQ_CHNG:
case 0: {
/*
- * Off heap message queue disabled, i.e. we may
- * have references from the message queue to the
- * heap...
+ * We do not have off heap message queue enabled, i.e. we
+ * need to add message queue to rootset...
*/
ErtsMessage *mp;
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 296cfdabc3..99d8a2a987 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -630,7 +630,8 @@ void erts_usage(void)
erts_fprintf(stderr, "-W<i|w|e> set error logger warnings mapping,\n");
erts_fprintf(stderr, " see error_logger documentation for details\n");
- erts_fprintf(stderr, "-xohmq bool set default off_heap_message_queue flag for processes\n");
+ erts_fprintf(stderr, "-xmqd val set default message queue data flag for processes,\n");
+ erts_fprintf(stderr, " valid values are: off_heap | on_heap | mixed\n");
erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
erts_fprintf(stderr, "-zdntgc time set delayed node table gc in seconds\n");
@@ -2020,15 +2021,21 @@ erl_start(int argc, char **argv)
case 'x': {
char *sub_param = argv[i]+2;
- if (has_prefix("ohmq", sub_param)) {
- arg = get_arg(sub_param+4, argv[i+1], &i);
- if (sys_strcmp(arg, "true") == 0)
- erts_default_spo_flags |= SPO_OFF_HEAP_MSGQ;
- else if (sys_strcmp(arg, "false") == 0)
+ if (has_prefix("mqd", sub_param)) {
+ arg = get_arg(sub_param+3, argv[i+1], &i);
+ if (sys_strcmp(arg, "mixed") == 0)
+ erts_default_spo_flags &= ~(SPO_ON_HEAP_MSGQ|SPO_OFF_HEAP_MSGQ);
+ else if (sys_strcmp(arg, "on_heap") == 0) {
erts_default_spo_flags &= ~SPO_OFF_HEAP_MSGQ;
+ erts_default_spo_flags |= SPO_ON_HEAP_MSGQ;
+ }
+ else if (sys_strcmp(arg, "off_heap") == 0) {
+ erts_default_spo_flags &= ~SPO_ON_HEAP_MSGQ;
+ erts_default_spo_flags |= SPO_OFF_HEAP_MSGQ;
+ }
else {
erts_fprintf(stderr,
- "Invalid off_heap_message_queue flag: %s\n", arg);
+ "Invalid message_queue_data flag: %s\n", arg);
erts_usage();
}
} else {
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index 1811651a58..766e0bf52a 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -630,9 +630,24 @@ erts_try_alloc_message_on_heap(Process *pp,
#endif
else {
in_message_fragment:
-
- mp = erts_alloc_message(sz, hpp);
- *ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
+ if (!((*psp) & ERTS_PSFLG_ON_HEAP_MSGQ)) {
+ mp = erts_alloc_message(sz, hpp);
+ *ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
+ }
+ else {
+ mp = erts_alloc_message(0, NULL);
+ if (!sz) {
+ *hpp = NULL;
+ *ohpp = NULL;
+ }
+ else {
+ ErlHeapFragment *bp;
+ bp = new_message_buffer(sz);
+ *hpp = &bp->mem[0];
+ mp->data.heap_frag = bp;
+ *ohpp = &bp->off_heap;
+ }
+ }
*on_heap_p = 0;
}
@@ -1022,12 +1037,12 @@ erts_complete_off_heap_message_queue_change(Process *c_p)
ASSERT(erts_smp_atomic32_read_nob(&c_p->state) & ERTS_PSFLG_OFF_HEAP_MSGQ);
/*
- * This job was first initiated when the process changed
- * "off heap message queue" state from false to true. Since
- * then ERTS_PSFLG_OFF_HEAP_MSGQ has been set. However, the
- * state change might have been changed again (multiple times)
- * since then. Check users last requested state (the flag
- * F_OFF_HEAP_MSGQ), and make the state consistent with that.
+ * This job was first initiated when the process changed to off heap
+ * message queue management. Since then ERTS_PSFLG_OFF_HEAP_MSGQ
+ * has been set. However, the management state might have been changed
+ * again (multiple times) since then. Check users last requested state
+ * (the flags F_OFF_HEAP_MSGQ, and F_ON_HEAP_MSGQ), and make the state
+ * consistent with that.
*/
if (!(c_p->flags & F_OFF_HEAP_MSGQ))
@@ -1068,8 +1083,9 @@ change_off_heap_msgq(void *vcohmq)
}
Eterm
-erts_change_off_heap_message_queue_state(Process *c_p, int enable)
+erts_change_message_queue_management(Process *c_p, Eterm new_state)
{
+ Eterm res;
#ifdef DEBUG
if (c_p->flags & F_OFF_HEAP_MSGQ) {
@@ -1088,57 +1104,117 @@ erts_change_off_heap_message_queue_state(Process *c_p, int enable)
}
#endif
- if (c_p->flags & F_OFF_HEAP_MSGQ) {
- /* Off heap message queue is enabled */
+ switch (c_p->flags & (F_OFF_HEAP_MSGQ|F_ON_HEAP_MSGQ)) {
- if (!enable) {
+ case F_OFF_HEAP_MSGQ:
+ res = am_off_heap;
+
+ switch (new_state) {
+ case am_off_heap:
+ break;
+ case am_on_heap:
+ c_p->flags |= F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_ON_HEAP_MSGQ);
+ /* fall through */
+ case am_mixed:
c_p->flags &= ~F_OFF_HEAP_MSGQ;
/*
* We are not allowed to clear ERTS_PSFLG_OFF_HEAP_MSGQ
- * if a change is ongoing. It will be adjusted when the
- * change completes...
+ * if a off heap change is ongoing. It will be adjusted
+ * when the change completes...
*/
if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
/* Safe to clear ERTS_PSFLG_OFF_HEAP_MSGQ... */
erts_smp_atomic32_read_band_nob(&c_p->state,
~ERTS_PSFLG_OFF_HEAP_MSGQ);
}
+ break;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
}
+ break;
+
+ case F_ON_HEAP_MSGQ:
+ res = am_on_heap;
- return am_true; /* Old state */
+ switch (new_state) {
+ case am_on_heap:
+ break;
+ case am_mixed:
+ c_p->flags &= ~F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_ON_HEAP_MSGQ);
+ break;
+ case am_off_heap:
+ c_p->flags &= ~F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_ON_HEAP_MSGQ);
+ goto change_to_off_heap;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
+ }
+ break;
+
+ case 0:
+ res = am_mixed;
+
+ switch (new_state) {
+ case am_mixed:
+ break;
+ case am_on_heap:
+ c_p->flags |= F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_ON_HEAP_MSGQ);
+ break;
+ case am_off_heap:
+ goto change_to_off_heap;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
+ }
+ break;
+
+ default:
+ res = am_error;
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ break;
}
- /* Off heap message queue is disabled */
+ return res;
+
+change_to_off_heap:
- if (enable) {
- c_p->flags |= F_OFF_HEAP_MSGQ;
+ c_p->flags |= F_OFF_HEAP_MSGQ;
+
+ /*
+ * We do not have to schedule a change if
+ * we have an ongoing off heap change...
+ */
+ if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
+ ErtsChangeOffHeapMessageQueue *cohmq;
/*
- * We do not have to schedule a change if
- * we have an ongoing change...
+ * Need to set ERTS_PSFLG_OFF_HEAP_MSGQ and wait
+ * thread progress before completing the change in
+ * order to ensure that all senders observe that
+ * messages should be passed off heap. When the
+ * change has completed, GC does not need to inspect
+ * the message queue at all.
*/
- if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
- ErtsChangeOffHeapMessageQueue *cohmq;
- /*
- * Need to set ERTS_PSFLG_OFF_HEAP_MSGQ and wait
- * thread progress before completing the change in
- * order to ensure that all senders observe that
- * messages should be passed off heap. When the
- * change has completed, GC does not need to inspect
- * the message queue at all.
- */
- erts_smp_atomic32_read_bor_nob(&c_p->state,
- ERTS_PSFLG_OFF_HEAP_MSGQ);
- c_p->flags |= F_OFF_HEAP_MSGQ_CHNG;
- cohmq = erts_alloc(ERTS_ALC_T_MSGQ_CHNG,
- sizeof(ErtsChangeOffHeapMessageQueue));
- cohmq->pid = c_p->common.id;
- erts_schedule_thr_prgr_later_op(change_off_heap_msgq,
- (void *) cohmq,
- &cohmq->lop);
- }
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_OFF_HEAP_MSGQ);
+ c_p->flags |= F_OFF_HEAP_MSGQ_CHNG;
+ cohmq = erts_alloc(ERTS_ALC_T_MSGQ_CHNG,
+ sizeof(ErtsChangeOffHeapMessageQueue));
+ cohmq->pid = c_p->common.id;
+ erts_schedule_thr_prgr_later_op(change_off_heap_msgq,
+ (void *) cohmq,
+ &cohmq->lop);
}
- return am_false; /* Old state */
+ return res;
}
int
diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h
index 76387bc34c..fa9bb2ecde 100644
--- a/erts/emulator/beam/erl_message.h
+++ b/erts/emulator/beam/erl_message.h
@@ -284,7 +284,7 @@ void erts_cleanup_offheap(ErlOffHeap *offheap);
void erts_save_message_in_proc(Process *p, ErtsMessage *msg);
Sint erts_move_messages_off_heap(Process *c_p);
Sint erts_complete_off_heap_message_queue_change(Process *c_p);
-Eterm erts_change_off_heap_message_queue_state(Process *c_p, int enable);
+Eterm erts_change_message_queue_management(Process *c_p, Eterm new_state);
int erts_decode_dist_message(Process *, ErtsProcLocks, ErtsMessage *, int);
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index a714068314..6c132a7e3d 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -335,7 +335,6 @@ static ErtsAlignedSchedulerSleepInfo *aligned_dirty_io_sched_sleep_info;
static Uint last_reductions;
static Uint last_exact_reductions;
-Uint erts_default_process_flags;
Eterm erts_system_monitor;
Eterm erts_system_monitor_long_gc;
Uint erts_system_monitor_long_schedule;
@@ -677,7 +676,6 @@ erts_init_process(int ncpu, int proc_tab_size, int legacy_proc_tab)
last_reductions = 0;
last_exact_reductions = 0;
- erts_default_process_flags = 0;
}
void
@@ -9259,6 +9257,8 @@ Process *schedule(Process *p, int calls)
} else {
sched_out_proc:
+ ASSERT(!(p->flags & F_DELAY_GC));
+
#ifdef ERTS_SMP
ERTS_SMP_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
esdp = p->scheduler_data;
@@ -10732,7 +10732,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
Eterm args, /* Arguments for function (must be well-formed list). */
ErlSpawnOpts* so) /* Options for spawn. */
{
- Uint flags = erts_default_process_flags;
+ Uint flags = 0;
ErtsRunQueue *rq = NULL;
Process *p;
Sint arity; /* Number of arguments. */
@@ -10778,6 +10778,10 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
state |= ERTS_PSFLG_OFF_HEAP_MSGQ;
flags |= F_OFF_HEAP_MSGQ;
}
+ else if (so->flags & SPO_ON_HEAP_MSGQ) {
+ state |= ERTS_PSFLG_ON_HEAP_MSGQ;
+ flags |= F_ON_HEAP_MSGQ;
+ }
if (!rq)
rq = erts_get_runq_proc(parent);
@@ -11267,6 +11271,7 @@ erts_cleanup_empty_process(Process* p)
static void
delete_process(Process* p)
{
+ Eterm *heap;
VERBOSE(DEBUG_PROCESSES, ("Removing process: %T\n",p->common.id));
VERBOSE(DEBUG_SHCOPY, ("[pid=%T] delete process: %p %p %p %p\n", p->common.id,
HEAP_START(p), HEAP_END(p), OLD_HEAP(p), OLD_HEND(p)));
@@ -11293,16 +11298,17 @@ delete_process(Process* p)
* Release heaps. Clobber contents in DEBUG build.
*/
-
-#ifdef DEBUG
- sys_memset(p->heap, DEBUG_BAD_BYTE, p->heap_sz*sizeof(Eterm));
-#endif
-
#ifdef HIPE
hipe_delete_process(&p->hipe);
#endif
- ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, (void*) p->heap, p->heap_sz*sizeof(Eterm));
+ heap = p->abandoned_heap ? p->abandoned_heap : p->heap;
+
+#ifdef DEBUG
+ sys_memset(heap, DEBUG_BAD_BYTE, p->heap_sz*sizeof(Eterm));
+#endif
+
+ ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, (void*) heap, p->heap_sz*sizeof(Eterm));
if (p->old_heap != NULL) {
#ifdef DEBUG
@@ -11321,6 +11327,9 @@ delete_process(Process* p)
free_message_buffer(p->mbuf);
}
+ if (p->msg_frag)
+ erts_cleanup_messages(p->msg_frag);
+
erts_erase_dicts(p);
/* free all pending messages */
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index a72c5b8ad4..71065d875a 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1141,14 +1141,15 @@ void erts_check_for_holes(Process* p);
#define ERTS_PSFLG_PROXY ERTS_PSFLG_BIT(16)
#define ERTS_PSFLG_DELAYED_SYS ERTS_PSFLG_BIT(17)
#define ERTS_PSFLG_OFF_HEAP_MSGQ ERTS_PSFLG_BIT(18)
+#define ERTS_PSFLG_ON_HEAP_MSGQ ERTS_PSFLG_BIT(19)
#ifdef ERTS_DIRTY_SCHEDULERS
-#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(19)
-#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(20)
-#define ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q ERTS_PSFLG_BIT(21)
-#define ERTS_PSFLG_DIRTY_IO_PROC_IN_Q ERTS_PSFLG_BIT(22)
-#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 23)
+#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(20)
+#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(21)
+#define ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q ERTS_PSFLG_BIT(22)
+#define ERTS_PSFLG_DIRTY_IO_PROC_IN_Q ERTS_PSFLG_BIT(23)
+#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 24)
#else
-#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 19)
+#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 20)
#endif
#define ERTS_PSFLGS_IN_PRQ_MASK (ERTS_PSFLG_IN_PRQ_MAX \
@@ -1197,6 +1198,7 @@ void erts_check_for_holes(Process* p);
#define SPO_MONITOR 4
#define SPO_SYSTEM_PROC 8
#define SPO_OFF_HEAP_MSGQ 16
+#define SPO_ON_HEAP_MSGQ 32
extern int erts_default_spo_flags;
@@ -1244,7 +1246,6 @@ Eterm* erts_heap_alloc(Process* p, Uint need, Uint xtra);
Eterm* erts_set_hole_marker(Eterm* ptr, Uint sz);
#endif
-extern Uint erts_default_process_flags;
extern erts_smp_rwmtx_t erts_cpu_bind_rwmtx;
/* If any of the erts_system_monitor_* variables are set (enabled),
** erts_system_monitor must be != NIL, to allow testing on just
@@ -1285,10 +1286,23 @@ extern struct erts_system_profile_flags_t erts_system_profile_flags;
#define F_HAVE_BLCKD_MSCHED (1 << 8) /* Process has blocked multi-scheduling */
#define F_P2PNR_RESCHED (1 << 9) /* Process has been rescheduled via erts_pid2proc_not_running() */
#define F_FORCE_GC (1 << 10) /* Force gc at process in-scheduling */
-#define F_DISABLE_GC (1 << 11) /* Disable GC */
+#define F_DISABLE_GC (1 << 11) /* Disable GC (see below) */
#define F_OFF_HEAP_MSGQ (1 << 12) /* Off heap msg queue */
-#define F_OFF_HEAP_MSGQ_CHNG (1 << 13) /* Off heap msg queue changing */
-#define F_ABANDONED_HEAP_USE (1 << 14) /* Have usage of abandoned heap */
+#define F_ON_HEAP_MSGQ (1 << 13) /* Off heap msg queue */
+#define F_OFF_HEAP_MSGQ_CHNG (1 << 14) /* Off heap msg queue changing */
+#define F_ABANDONED_HEAP_USE (1 << 15) /* Have usage of abandoned heap */
+#define F_DELAY_GC (1 << 16) /* Similar to disable GC (see below) */
+
+/*
+ * F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent
+ * GC of the process, but it is important to use the right
+ * one:
+ * - F_DISABLE_GC should *only* be used by BIFs. This when
+ * the BIF needs to yield while preventig a GC.
+ * - F_DELAY_GC should only be used when GC is temporarily
+ * disabled while the process is scheduled. A process must
+ * not be scheduled out while F_DELAY_GC is set.
+ */
/* process trace_flags */
#define F_SENSITIVE (1 << 0)
diff --git a/erts/emulator/hipe/hipe_native_bif.c b/erts/emulator/hipe/hipe_native_bif.c
index ad8fb685e5..1bfee94e9e 100644
--- a/erts/emulator/hipe/hipe_native_bif.c
+++ b/erts/emulator/hipe/hipe_native_bif.c
@@ -164,7 +164,7 @@ void hipe_select_msg(Process *p)
JOIN_MESSAGE(p);
CANCEL_TIMER(p); /* calls erts_cancel_proc_timer() */
erts_save_message_in_proc(p, msgp);
- p->flags &= ~F_DISABLE_GC;
+ p->flags &= ~F_DELAY_GC;
if (ERTS_IS_GC_DESIRED(p)) {
/*
* We want to GC soon but we leave a few
@@ -519,7 +519,7 @@ Eterm hipe_check_get_msg(Process *c_p)
{
ErtsMessage *msgp;
- c_p->flags |= F_DISABLE_GC;
+ c_p->flags |= F_DELAY_GC;
next_message:
@@ -541,7 +541,7 @@ Eterm hipe_check_get_msg(Process *c_p)
/* XXX: BEAM doesn't need this */
c_p->hipe_smp.have_receive_locks = 1;
#endif
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
return THE_NON_VALUE;
#ifdef ERTS_SMP
}
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index 77614d455c..8cc47937b7 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -79,6 +79,7 @@ MODULES= \
node_container_SUITE \
nofrag_SUITE \
num_bif_SUITE \
+ message_queue_data_SUITE \
op_SUITE \
port_SUITE \
port_bif_SUITE \
diff --git a/erts/emulator/test/message_queue_data_SUITE.erl b/erts/emulator/test/message_queue_data_SUITE.erl
new file mode 100644
index 0000000000..11481409aa
--- /dev/null
+++ b/erts/emulator/test/message_queue_data_SUITE.erl
@@ -0,0 +1,239 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 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%
+%%
+
+-module(message_queue_data_SUITE).
+
+-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
+ init_per_group/2,end_per_group/2,
+ init_per_testcase/2,end_per_testcase/2]).
+-export([basic/1, process_info_messages/1]).
+
+-export([basic_test/1]).
+
+-include_lib("test_server/include/test_server.hrl").
+
+init_per_testcase(Case, Config) ->
+ ?line Dog=test_server:timetrap(test_server:minutes(2)),
+ [{watchdog, Dog}, {testcase, Case}|Config].
+
+end_per_testcase(_, Config) ->
+ Dog=?config(watchdog, Config),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ [basic, process_info_messages].
+
+groups() ->
+ [].
+
+init_per_suite(Config) ->
+%% erts_debug:set_internal_state(available_internal_state, true),
+ Config.
+
+end_per_suite(_Config) ->
+%% erts_debug:set_internal_state(available_internal_state, false),
+ ok.
+
+init_per_group(_GroupName, Config) ->
+ Config.
+
+end_per_group(_GroupName, Config) ->
+ Config.
+
+%%
+%%
+%% Test cases
+%%
+%%
+
+basic(Config) when is_list(Config) ->
+
+ basic_test(erlang:system_info(message_queue_data)),
+
+ {ok, Node1} = start_node(Config, "+xmqd off_heap"),
+ ok = rpc:call(Node1, ?MODULE, basic_test, [off_heap]),
+ stop_node(Node1),
+
+ {ok, Node2} = start_node(Config, "+xmqd on_heap"),
+ ok = rpc:call(Node2, ?MODULE, basic_test, [on_heap]),
+ stop_node(Node2),
+
+ {ok, Node3} = start_node(Config, "+xmqd mixed"),
+ ok = rpc:call(Node3, ?MODULE, basic_test, [mixed]),
+ stop_node(Node3),
+
+ ok.
+
+is_valid_mqd_value(off_heap) ->
+ true;
+is_valid_mqd_value(on_heap) ->
+ true;
+is_valid_mqd_value(mixed) ->
+ true;
+is_valid_mqd_value(_) ->
+ false.
+
+
+basic_test(Default) ->
+
+ Default = erlang:system_info(message_queue_data),
+ true = is_valid_mqd_value(Default),
+
+ {message_queue_data, Default} = process_info(self(), message_queue_data),
+ Default = process_flag(message_queue_data, off_heap),
+ {message_queue_data, off_heap} = process_info(self(), message_queue_data),
+ off_heap = process_flag(message_queue_data, on_heap),
+ {message_queue_data, on_heap} = process_info(self(), message_queue_data),
+ on_heap = process_flag(message_queue_data, mixed),
+ {message_queue_data, mixed} = process_info(self(), message_queue_data),
+ mixed = process_flag(message_queue_data, Default),
+ {'EXIT', _} = (catch process_flag(message_queue_data, blupp)),
+
+ P1 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link]),
+ {message_queue_data, Default} = process_info(P1, message_queue_data),
+ unlink(P1),
+ exit(P1, bye),
+
+ P2 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, off_heap}]),
+ {message_queue_data, off_heap} = process_info(P2, message_queue_data),
+ unlink(P2),
+ exit(P2, bye),
+
+ P3 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, on_heap}]),
+ {message_queue_data, on_heap} = process_info(P3, message_queue_data),
+ unlink(P3),
+ exit(P3, bye),
+
+ P4 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, mixed}]),
+ {message_queue_data, mixed} = process_info(P4, message_queue_data),
+ unlink(P4),
+ exit(P4, bye),
+
+ {'EXIT', _} = (catch spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, blapp}])),
+
+ ok.
+
+process_info_messages(Config) when is_list(Config) ->
+ Tester = self(),
+ P1 = spawn_opt(fun () ->
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! first,
+ receive after 500 -> ok end,
+ off_heap = process_flag(message_queue_data, on_heap),
+ Tester ! second,
+ receive after 500 -> ok end,
+ on_heap = process_flag(message_queue_data, mixed),
+ Tester ! third,
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! fourth,
+
+ receive after infinity -> ok end
+ end,
+ [link, {message_queue_data, mixed}]),
+
+ P1 ! "A",
+ receive first -> ok end,
+ P1 ! "B",
+ receive second -> ok end,
+ P1 ! "C",
+ receive third -> ok end,
+ P1 ! "D",
+ receive fourth -> ok end,
+ P1 ! "E",
+
+ {messages, ["A", "B", "C", "D", "E"]} = process_info(P1, messages),
+
+ P2 = spawn_opt(fun () ->
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! first,
+ receive after 500 -> ok end,
+ off_heap = process_flag(message_queue_data, on_heap),
+ Tester ! second,
+ receive after 500 -> ok end,
+ on_heap = process_flag(message_queue_data, mixed),
+ Tester ! third,
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! fourth,
+ receive after 500 -> ok end,
+
+ Tester ! process_info(self(), messages),
+
+ receive M1 -> M1 = "A" end,
+ receive M2 -> M2 = "B" end,
+ receive M3 -> M3 = "C" end,
+ receive M4 -> M4 = "D" end,
+ receive M5 -> M5 = "E" end,
+
+ Tester ! self()
+ end,
+ [link, {message_queue_data, mixed}]),
+
+ P2 ! "A",
+ receive first -> ok end,
+ P2 ! "B",
+ receive second -> ok end,
+ P2 ! "C",
+ receive third -> ok end,
+ P2 ! "D",
+ receive fourth -> ok end,
+ P2 ! "E",
+
+ receive
+ Msg ->
+ {messages, ["A", "B", "C", "D", "E"]} = Msg
+ end,
+
+ receive P2 -> ok end,
+
+ ok.
+
+%%
+%%
+%% helpers
+%%
+%%
+
+start_node(Config) ->
+ start_node(Config, []).
+start_node(Config, Opts) when is_list(Config), is_list(Opts) ->
+ Pa = filename:dirname(code:which(?MODULE)),
+ Name = list_to_atom(atom_to_list(?MODULE)
+ ++ "-"
+ ++ atom_to_list(?config(testcase, Config))
+ ++ "-"
+ ++ integer_to_list(erlang:system_time(seconds))
+ ++ "-"
+ ++ integer_to_list(erlang:unique_integer([positive]))),
+ ?t:start_node(Name, slave, [{args, Opts++" -pa "++Pa}]).
+
+stop_node(Node) ->
+ ?t:stop_node(Node).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 16:14:51 +0000