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Bundle 3 branches on fast path into tsd_state.

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Added tsd_state_nominal_slow, which on fast path malloc() incorporates
tcache_enabled check, and on fast path free() bundles both malloc_slow and
tcache_enabled branches.
This commit is contained in:
Qi Wang
2017-04-11 23:13:45 -07:00
committed by Qi Wang
parent ccfe68a916
commit b348ba29bb
10 changed files with 170 additions and 78 deletions
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40
src/tsd.c
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@@ -12,6 +12,40 @@ malloc_tsd_data(, , tsd_t, TSD_INITIALIZER)
/******************************************************************************/
void
tsd_slow_update(tsd_t *tsd) {
if (tsd_nominal(tsd)) {
if (malloc_slow || !tsd->tcache_enabled) {
tsd->state = tsd_state_nominal_slow;
} else {
tsd->state = tsd_state_nominal;
}
}
}
tsd_t *
tsd_fetch_slow(tsd_t *tsd) {
if (tsd->state == tsd_state_nominal_slow) {
/* On slow path but no work needed. */
assert(malloc_slow || !tsd_tcache_enabled_get(tsd) ||
*tsd_arenas_tdata_bypassp_get(tsd));
} else if (tsd->state == tsd_state_uninitialized) {
tsd->state = tsd_state_nominal;
tsd_slow_update(tsd);
/* Trigger cleanup handler registration. */
tsd_set(tsd);
tsd_data_init(tsd);
} else if (tsd->state == tsd_state_purgatory) {
tsd->state = tsd_state_reincarnated;
tsd_set(tsd);
tsd_data_init(tsd);
} else {
assert(tsd->state == tsd_state_reincarnated);
}
return tsd;
}
void *
malloc_tsd_malloc(size_t size) {
return a0malloc(CACHELINE_CEILING(size));
@@ -82,6 +116,7 @@ tsd_cleanup(void *arg) {
/* Do nothing. */
break;
case tsd_state_nominal:
case tsd_state_nominal_slow:
case tsd_state_reincarnated:
/*
* Reincarnated means another destructor deallocated memory
@@ -129,7 +164,10 @@ malloc_tsd_boot0(void) {
void
malloc_tsd_boot1(void) {
tsd_boot1();
*tsd_arenas_tdata_bypassp_get(tsd_fetch()) = false;
tsd_t *tsd = tsd_fetch();
/* malloc_slow has been set properly. Update tsd_slow. */
tsd_slow_update(tsd);
*tsd_arenas_tdata_bypassp_get(tsd) = false;
}
#ifdef _WIN32