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Implement opt.cache_oblivious.

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Keep config.cache_oblivious for now to remain backward-compatible.
This commit is contained in:
Qi Wang
2021-02-09 22:24:35 -08:00
committed by Qi Wang
parent 8c5e5f50a2
commit a11be50332
12 changed files with 53 additions and 27 deletions
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17
src/jemalloc.c
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@@ -102,6 +102,14 @@ bool opt_trust_madvise =
#endif
;
bool opt_cache_oblivious =
#ifdef JEMALLOC_CACHE_OBLIVIOUS
true
#else
false
#endif
;
zero_realloc_action_t opt_zero_realloc_action =
zero_realloc_action_strict;
@@ -1697,7 +1705,7 @@ malloc_init_hard_a0_locked() {
prof_boot0();
}
malloc_conf_init(&sc_data, bin_shard_sizes);
sz_boot(&sc_data);
sz_boot(&sc_data, opt_cache_oblivious);
bin_info_boot(&sc_data, bin_shard_sizes);
if (opt_stats_print) {
@@ -2790,12 +2798,7 @@ isfree(tsd_t *tsd, void *ptr, size_t usize, tcache_t *tcache, bool slow_path) {
* usize can be trusted to determine szind and slab.
*/
alloc_ctx.szind = sz_size2index(usize);
if (config_cache_oblivious) {
alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
} else {
/* Non page aligned must be slab allocated. */
alloc_ctx.slab = true;
}
alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
} else if (opt_prof) {
emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global,
ptr, &alloc_ctx);