romenskiy2012/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-08-24 08:03:32 +03:00
Code Issues Projects Releases Packages Wiki Activity

Extent refactor: Introduce ecache module.

Browse source 
This will eventually completely wrap the eset, and handle concurrency,
allocation, and deallocation.  For now, we only pull out the mutex from the
eset.
This commit is contained in:
David Goldblatt 2019-12-12 16:25:24 -08:00 • committed by David Goldblatt
parent 0704516245
commit bb70df8e5b
15 changed files with 354 additions and 295 deletions
Download patch file Download diff file Expand all files Collapse all files

59
include/jemalloc/internal/ecache.h Normal file
View file

@ -0,0 +1,59 @@
#ifndef JEMALLOC_INTERNAL_ECACHE_H
#define JEMALLOC_INTERNAL_ECACHE_H
#include "jemalloc/internal/eset.h"
#include "jemalloc/internal/mutex.h"
typedef struct ecache_s ecache_t;
struct ecache_s {
malloc_mutex_t mtx;
eset_t eset;
};
typedef struct ecache_grow_s ecache_grow_t;
struct ecache_grow_s {
/*
* Next extent size class in a growing series to use when satisfying a
* request via the extent hooks (only if opt_retain). This limits the
* number of disjoint virtual memory ranges so that extent merging can
* be effective even if multiple arenas' extent allocation requests are
* highly interleaved.
*
* retain_grow_limit is the max allowed size ind to expand (unless the
* required size is greater). Default is no limit, and controlled
* through mallctl only.
*
* Synchronization: extent_grow_mtx
*/
pszind_t next;
pszind_t limit;
malloc_mutex_t mtx;
};
static inline size_t
ecache_npages_get(ecache_t *ecache) {
return eset_npages_get(&ecache->eset);
}
/* Get the number of extents in the given page size index. */
static inline size_t
ecache_nextents_get(ecache_t *ecache, pszind_t ind) {
return eset_nextents_get(&ecache->eset, ind);
}
/* Get the sum total bytes of the extents in the given page size index. */
static inline size_t
ecache_nbytes_get(ecache_t *ecache, pszind_t ind) {
return eset_nbytes_get(&ecache->eset, ind);
}
bool ecache_init(tsdn_t *tsdn, ecache_t *ecache, extent_state_t state,
bool delay_coalesce);
void ecache_prefork(tsdn_t *tsdn, ecache_t *ecache);
void ecache_postfork_parent(tsdn_t *tsdn, ecache_t *ecache);
void ecache_postfork_child(tsdn_t *tsdn, ecache_t *ecache);
bool ecache_grow_init(tsdn_t *tsdn, ecache_grow_t *ecache_grow);
void ecache_grow_prefork(tsdn_t *tsdn, ecache_grow_t *ecache_grow);
void ecache_grow_postfork_parent(tsdn_t *tsdn, ecache_grow_t *ecache_grow);
void ecache_grow_postfork_child(tsdn_t *tsdn, ecache_grow_t *ecache_grow);
#endif /* JEMALLOC_INTERNAL_ECACHE_H */