diff options
Diffstat (limited to 'deps/jemalloc/include/jemalloc/internal/edata_cache.h')
-rw-r--r-- | deps/jemalloc/include/jemalloc/internal/edata_cache.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/deps/jemalloc/include/jemalloc/internal/edata_cache.h b/deps/jemalloc/include/jemalloc/internal/edata_cache.h new file mode 100644 index 0000000..8b6c0ef --- /dev/null +++ b/deps/jemalloc/include/jemalloc/internal/edata_cache.h @@ -0,0 +1,49 @@ +#ifndef JEMALLOC_INTERNAL_EDATA_CACHE_H +#define JEMALLOC_INTERNAL_EDATA_CACHE_H + +#include "jemalloc/internal/base.h" + +/* For tests only. */ +#define EDATA_CACHE_FAST_FILL 4 + +/* + * A cache of edata_t structures allocated via base_alloc_edata (as opposed to + * the underlying extents they describe). The contents of returned edata_t + * objects are garbage and cannot be relied upon. + */ + +typedef struct edata_cache_s edata_cache_t; +struct edata_cache_s { + edata_avail_t avail; + atomic_zu_t count; + malloc_mutex_t mtx; + base_t *base; +}; + +bool edata_cache_init(edata_cache_t *edata_cache, base_t *base); +edata_t *edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache); +void edata_cache_put(tsdn_t *tsdn, edata_cache_t *edata_cache, edata_t *edata); + +void edata_cache_prefork(tsdn_t *tsdn, edata_cache_t *edata_cache); +void edata_cache_postfork_parent(tsdn_t *tsdn, edata_cache_t *edata_cache); +void edata_cache_postfork_child(tsdn_t *tsdn, edata_cache_t *edata_cache); + +/* + * An edata_cache_small is like an edata_cache, but it relies on external + * synchronization and avoids first-fit strategies. + */ + +typedef struct edata_cache_fast_s edata_cache_fast_t; +struct edata_cache_fast_s { + edata_list_inactive_t list; + edata_cache_t *fallback; + bool disabled; +}; + +void edata_cache_fast_init(edata_cache_fast_t *ecs, edata_cache_t *fallback); +edata_t *edata_cache_fast_get(tsdn_t *tsdn, edata_cache_fast_t *ecs); +void edata_cache_fast_put(tsdn_t *tsdn, edata_cache_fast_t *ecs, + edata_t *edata); +void edata_cache_fast_disable(tsdn_t *tsdn, edata_cache_fast_t *ecs); + +#endif /* JEMALLOC_INTERNAL_EDATA_CACHE_H */ |