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Convert arena->prof_accumbytes synchronization to atomics.

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This commit is contained in:
Jason Evans 2017-02-12 17:03:46 -08:00
parent b779522b9b
commit fa2d64c94b
15 changed files with 128 additions and 59 deletions
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18
src/arena.c
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@ -1148,19 +1148,7 @@ arena_prof_promote(tsdn_t *tsdn, extent_t *extent, const void *ptr,
extent_usize_set(extent, usize);
/*
* Cancel out as much of the excessive prof_accumbytes increase as
* possible without underflowing. Interval-triggered dumps occur
* slightly more often than intended as a result of incomplete
* canceling.
*/
malloc_mutex_lock(tsdn, &arena->lock);
if (arena->prof_accumbytes >= LARGE_MINCLASS - usize) {
arena->prof_accumbytes -= LARGE_MINCLASS - usize;
} else {
arena->prof_accumbytes = 0;
}
malloc_mutex_unlock(tsdn, &arena->lock);
prof_accum_cancel(tsdn, &arena->prof_accum, usize);
assert(isalloc(tsdn, extent, ptr) == usize);
}
@ -1574,7 +1562,9 @@ arena_new(tsdn_t *tsdn, unsigned ind, extent_hooks_t *extent_hooks) {
}
if (config_prof) {
arena->prof_accumbytes = 0;
if (prof_accum_init(tsdn, &arena->prof_accum)) {
goto label_error;
}
}
if (config_cache_oblivious) {