project-base/server-skynet-source-3rd-jemalloc
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Fix prof regressions.

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Don't use atomic_add_uint64(), because it isn't available on 32-bit
platforms.

Fix forking support functions to manage all prof-related mutexes.

These regressions were introduced by
602c8e0971 (Implement per thread heap
profiling.), which did not make it into any releases prior to these
fixes.
This commit is contained in:
Jason Evans 2014-09-11 18:06:30 -07:00
parent c3e9e7b041
commit 9d8f3d2033
1 changed files with 22 additions and 1 deletions
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23
src/prof.c
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@ -68,6 +68,7 @@ static prof_tdata_tree_t tdatas;
static malloc_mutex_t tdatas_mtx;
static uint64_t next_thr_uid;
static malloc_mutex_t next_thr_uid_mtx;
static malloc_mutex_t prof_dump_seq_mtx;
static uint64_t prof_dump_seq;
@ -1498,8 +1499,14 @@ prof_bt_keycomp(const void *k1, const void *k2)
JEMALLOC_INLINE_C uint64_t
prof_thr_uid_alloc(void)
{
uint64_t thr_uid;
return (atomic_add_uint64(&next_thr_uid, 1) - 1);
malloc_mutex_lock(&next_thr_uid_mtx);
thr_uid = next_thr_uid;
next_thr_uid++;
malloc_mutex_unlock(&next_thr_uid_mtx);
return (thr_uid);
}
static prof_tdata_t *
@ -1785,6 +1792,8 @@ prof_boot2(void)
return (true);
next_thr_uid = 0;
if (malloc_mutex_init(&next_thr_uid_mtx))
return (true);
if (malloc_mutex_init(&prof_dump_seq_mtx))
return (true);
@ -1836,10 +1845,14 @@ prof_prefork(void)
if (opt_prof) {
unsigned i;
malloc_mutex_prefork(&tdatas_mtx);
malloc_mutex_prefork(&bt2gctx_mtx);
malloc_mutex_prefork(&next_thr_uid_mtx);
malloc_mutex_prefork(&prof_dump_seq_mtx);
for (i = 0; i < PROF_NCTX_LOCKS; i++)
malloc_mutex_prefork(&gctx_locks[i]);
for (i = 0; i < PROF_NTDATA_LOCKS; i++)
malloc_mutex_prefork(&tdata_locks[i]);
}
}
@ -1850,10 +1863,14 @@ prof_postfork_parent(void)
if (opt_prof) {
unsigned i;
for (i = 0; i < PROF_NTDATA_LOCKS; i++)
malloc_mutex_postfork_parent(&tdata_locks[i]);
for (i = 0; i < PROF_NCTX_LOCKS; i++)
malloc_mutex_postfork_parent(&gctx_locks[i]);
malloc_mutex_postfork_parent(&prof_dump_seq_mtx);
malloc_mutex_postfork_parent(&next_thr_uid_mtx);
malloc_mutex_postfork_parent(&bt2gctx_mtx);
malloc_mutex_postfork_parent(&tdatas_mtx);
}
}
@ -1864,10 +1881,14 @@ prof_postfork_child(void)
if (opt_prof) {
unsigned i;
for (i = 0; i < PROF_NTDATA_LOCKS; i++)
malloc_mutex_postfork_child(&tdata_locks[i]);
for (i = 0; i < PROF_NCTX_LOCKS; i++)
malloc_mutex_postfork_child(&gctx_locks[i]);
malloc_mutex_postfork_child(&prof_dump_seq_mtx);
malloc_mutex_postfork_child(&next_thr_uid_mtx);
malloc_mutex_postfork_child(&bt2gctx_mtx);
malloc_mutex_postfork_child(&tdatas_mtx);
}
}