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edata_cache: Remember the associated base_t.

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This will save us some trouble down the line when we stop passing arena pointers
everywhere; we won't have to pass around a base_t pointer either.
This commit is contained in:
David Goldblatt 2019-12-12 18:28:37 -08:00 • committed by David Goldblatt
parent ae23e5f426
commit c792f3e4ab
5 changed files with 20 additions and 16 deletions
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16
src/edata_cache.c
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@ -2,23 +2,29 @@
#include "jemalloc/internal/jemalloc_internal_includes.h"
bool
edata_cache_init(edata_cache_t *edata_cache) {
edata_cache_init(edata_cache_t *edata_cache, base_t *base) {
edata_avail_new(&edata_cache->avail);
/*
* This is not strictly necessary, since the edata_cache_t is only
* created inside an arena, which is zeroed on creation. But this is
* handy as a safety measure.
*/
atomic_store_zu(&edata_cache->count, 0, ATOMIC_RELAXED);
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);
edata_cache->base = base;
return false;
}
edata_t *
edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache, base_t *base) {
edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache) {
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);
return base_alloc_edata(tsdn, edata_cache->base);
}
edata_avail_remove(&edata_cache->avail, edata);
atomic_fetch_sub_zu(&edata_cache->count, 1, ATOMIC_RELAXED);