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authorErlang/OTP <[email protected]>2017-06-07 15:19:26 +0200
committerErlang/OTP <[email protected]>2017-06-07 15:19:26 +0200
commitc64686a632a550b7c227307ec9af43857c2fd6d9 (patch)
tree5c0972d701fb19f85d6cc567bb4d04e0001cd90c /erts/emulator/beam
parent4310a9d387999ada6135082961350b6f4324dcb7 (diff)
parent39a41b0472f275e71ae9bb6abf3bb8b3c995b8e3 (diff)
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Merge branch 'rickard/purge-hibernated-19/ERIERL-24/OTP-14444' into maint-19
* rickard/purge-hibernated-19/ERIERL-24/OTP-14444: Update testcase to check that purge handle hibernated process correct Do not GC hibernated process from other processes Fix check_process_code() on hibernated process
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/beam_bif_load.c46
-rw-r--r--erts/emulator/beam/erl_gc.c5
-rw-r--r--erts/emulator/beam/erl_process.c3
-rw-r--r--erts/emulator/beam/erl_process.h1
4 files changed, 41 insertions, 14 deletions
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 27d6823d3c..b664532c1c 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -1051,23 +1051,32 @@ erts_proc_copy_literal_area(Process *c_p, int *redsp, int fcalls, int gc_allowed
return am_ok;
-literal_gc:
+literal_gc: {
+ int hibernated = !!(c_p->flags & F_HIBERNATED);
+ int gc_cost;
- if (!gc_allowed)
- return am_need_gc;
+ if (!gc_allowed)
+ return am_need_gc;
- if (c_p->flags & F_DISABLE_GC)
- return THE_NON_VALUE;
+ if (c_p->flags & F_DISABLE_GC)
+ return THE_NON_VALUE;
- FLAGS(c_p) |= F_NEED_FULLSWEEP;
+ FLAGS(c_p) |= F_NEED_FULLSWEEP;
- *redsp += erts_garbage_collect_nobump(c_p, 0, c_p->arg_reg, c_p->arity, fcalls);
+ gc_cost = erts_garbage_collect_nobump(c_p, 0, c_p->arg_reg, c_p->arity, fcalls);
+ *redsp += gc_cost;
- erts_garbage_collect_literals(c_p, (Eterm *) literals, lit_bsize, oh);
+ erts_garbage_collect_literals(c_p, (Eterm *) literals, lit_bsize, oh);
- *redsp += lit_bsize / 64; /* Need, better value... */
+ *redsp += lit_bsize / 64; /* Need, better value... */
- return am_ok;
+ if (hibernated) {
+ erts_garbage_collect_hibernate(c_p);
+ *redsp += gc_cost;
+ }
+
+ return am_ok;
+ }
}
static Eterm
@@ -1154,6 +1163,8 @@ check_process_code(Process* rp, Module* modp, Uint flags, int *redsp, int fcalls
Eterm* sp;
int done_gc = 0;
int need_gc = 0;
+ int hibernated = !!(rp->flags & F_HIBERNATED);
+ int gc_cost = 0;
ErtsMessage *msgp;
ErlHeapFragment *hfrag;
@@ -1288,8 +1299,13 @@ check_process_code(Process* rp, Module* modp, Uint flags, int *redsp, int fcalls
while (1) {
/* Check heap, stack etc... */
- if (check_mod_funs(rp, &rp->off_heap, mod_start, mod_size))
+ if (check_mod_funs(rp, &rp->off_heap, mod_start, mod_size)) {
+ if (hibernated) {
+ /* GC wont help; everything on heap is live... */
+ return am_true;
+ }
goto try_gc;
+ }
if (any_heap_ref_ptrs(&rp->fvalue, &rp->fvalue+1, literals, lit_bsize)) {
rp->freason = EXC_NULL;
rp->fvalue = NIL;
@@ -1379,7 +1395,9 @@ check_process_code(Process* rp, Module* modp, Uint flags, int *redsp, int fcalls
if (need_gc & ERTS_ORDINARY_GC__) {
FLAGS(rp) |= F_NEED_FULLSWEEP;
- *redsp += erts_garbage_collect_nobump(rp, 0, rp->arg_reg, rp->arity, fcalls);
+ gc_cost = erts_garbage_collect_nobump(rp, 0, rp->arg_reg, rp->arity, fcalls);
+ ASSERT(!hibernated || (need_gc & ERTS_LITERAL_GC__));
+ *redsp += gc_cost;
done_gc |= ERTS_ORDINARY_GC__;
}
if (need_gc & ERTS_LITERAL_GC__) {
@@ -1388,6 +1406,10 @@ check_process_code(Process* rp, Module* modp, Uint flags, int *redsp, int fcalls
*redsp += lit_bsize / 64; /* Need, better value... */
erts_garbage_collect_literals(rp, (Eterm*)literals, lit_bsize, oh);
done_gc |= ERTS_LITERAL_GC__;
+ if (hibernated) {
+ erts_garbage_collect_hibernate(rp);
+ *redsp += gc_cost;
+ }
}
need_gc = 0;
}
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index bb36be0848..d2560cfb49 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -764,7 +764,7 @@ do_major_collection:
esdp->gc_info.reclaimed += reclaimed_now;
}
- FLAGS(p) &= ~F_FORCE_GC;
+ FLAGS(p) &= ~(F_FORCE_GC|F_HIBERNATED);
p->live_hf_end = ERTS_INVALID_HFRAG_PTR;
ERTS_MSACC_POP_STATE_M();
@@ -929,6 +929,8 @@ erts_garbage_collect_hibernate(Process* p)
ErtsGcQuickSanityCheck(p);
+ p->flags |= F_HIBERNATED;
+
erts_smp_atomic32_read_band_nob(&p->state, ~ERTS_PSFLG_GC);
reds = gc_cost(actual_size, actual_size);
@@ -1158,6 +1160,7 @@ erts_garbage_collect_literals(Process* p, Eterm* literals,
/*
* Restore status.
*/
+ p->flags &= ~F_HIBERNATED;
erts_smp_atomic32_read_band_nob(&p->state, ~ERTS_PSFLG_GC);
}
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 5c0322a7f6..54724fd62d 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -10476,7 +10476,8 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds)
reds--;
}
else {
- if (!garbage_collected) {
+ if (!garbage_collected
+ && !(c_p->flags & F_HIBERNATED)) {
FLAGS(c_p) |= F_NEED_FULLSWEEP;
reds -= scheduler_gc_proc(c_p, reds);
garbage_collected = 1;
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 68fbb10602..b8755fe948 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1395,6 +1395,7 @@ extern int erts_system_profile_ts_type;
#define F_HAVE_BLCKD_NMSCHED (1 << 18) /* Process has blocked normal multi-scheduling */
#define F_HIPE_MODE (1 << 19)
#define F_DELAYED_DEL_PROC (1 << 20) /* Delay delete process (dirty proc exit case) */
+#define F_HIBERNATED (1 << 21) /* Hibernated */
/*
* F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent