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Pull out edata_t caching into its own module.

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David Goldblatt 2019-12-11 11:17:19 -08:00 • committed by David Goldblatt
parent a7862df616
commit 7859184179
12 changed files with 106 additions and 60 deletions
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47
src/edata_cache.c Normal file
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#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"
bool
edata_cache_init(edata_cache_t *edata_cache) {
if (malloc_mutex_init(&edata_cache->mtx, "edata_cache",
WITNESS_RANK_EDATA_CACHE, malloc_mutex_rank_exclusive)) {
return true;
}
edata_avail_new(&edata_cache->avail);
return false;
}
edata_t *
edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache, base_t *base) {
malloc_mutex_lock(tsdn, &edata_cache->mtx);
edata_t *edata = edata_avail_first(&edata_cache->avail);
if (edata == NULL) {
malloc_mutex_unlock(tsdn, &edata_cache->mtx);
return base_alloc_edata(tsdn, base);
}
edata_avail_remove(&edata_cache->avail, edata);
atomic_fetch_sub_zu(&edata_cache->count, 1, ATOMIC_RELAXED);
malloc_mutex_unlock(tsdn, &edata_cache->mtx);
return edata;
}
void
edata_cache_put(tsdn_t *tsdn, edata_cache_t *edata_cache, edata_t *edata) {
malloc_mutex_lock(tsdn, &edata_cache->mtx);
edata_avail_insert(&edata_cache->avail, edata);
atomic_fetch_add_zu(&edata_cache->count, 1, ATOMIC_RELAXED);
malloc_mutex_unlock(tsdn, &edata_cache->mtx);
}
void edata_cache_prefork(tsdn_t *tsdn, edata_cache_t *edata_cache) {
malloc_mutex_prefork(tsdn, &edata_cache->mtx);
}
void edata_cache_postfork_parent(tsdn_t *tsdn, edata_cache_t *edata_cache) {
malloc_mutex_postfork_parent(tsdn, &edata_cache->mtx);
}
void edata_cache_postfork_child(tsdn_t *tsdn, edata_cache_t *edata_cache) {
malloc_mutex_postfork_child(tsdn, &edata_cache->mtx);
}