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Use try_flush first in tcache_dalloc.

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Only do must_flush if try_flush didn't manage to free anything.
This commit is contained in:
Qi Wang 2017-04-25 14:10:31 -07:00 • committed by Qi Wang
parent 8584adc451
commit b0c2a28280
1 changed files with 10 additions and 4 deletions
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14
include/jemalloc/internal/tcache_inlines.h
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@ -201,8 +201,11 @@ tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
tbin = tcache_small_bin_get(tcache, binind);
tbin_info = &tcache_bin_info[binind];
if (unlikely(tbin->ncached == tbin_info->ncached_max)) {
tcache_bin_flush_small(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1));
if (tcache_bin_try_flush_small(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1)) == 0) {
tcache_bin_flush_small(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1));
}
}
assert(tbin->ncached < tbin_info->ncached_max);
tbin->ncached++;
@ -227,8 +230,11 @@ tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
tbin = tcache_large_bin_get(tcache, binind);
tbin_info = &tcache_bin_info[binind];
if (unlikely(tbin->ncached == tbin_info->ncached_max)) {
tcache_bin_flush_large(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1));
if (tcache_bin_try_flush_large(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1)) == 0) {
tcache_bin_flush_large(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1));
}
}
assert(tbin->ncached < tbin_info->ncached_max);
tbin->ncached++;