51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
|
#ifndef JEMALLOC_INTERNAL_BIN_INFO_H
|
||
|
|
#define JEMALLOC_INTERNAL_BIN_INFO_H
|
||
|
|
|
||
|
|
#include "jemalloc/internal/bitmap.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Read-only information associated with each element of arena_t's bins array
|
||
|
|
* is stored separately, partly to reduce memory usage (only one copy, rather
|
||
|
|
* than one per arena), but mainly to avoid false cacheline sharing.
|
||
|
|
*
|
||
|
|
* Each slab has the following layout:
|
||
|
|
*
|
||
|
|
* /--------------------\
|
||
|
|
* | region 0 |
|
||
|
|
* |--------------------|
|
||
|
|
* | region 1 |
|
||
|
|
* |--------------------|
|
||
|
|
* | ... |
|
||
|
|
* | ... |
|
||
|
|
* | ... |
|
||
|
|
* |--------------------|
|
||
|
|
* | region nregs-1 |
|
||
|
|
* \--------------------/
|
||
|
|
*/
|
||
|
|
typedef struct bin_info_s bin_info_t;
|
||
|
|
struct bin_info_s {
|
||
|
|
/* Size of regions in a slab for this bin's size class. */
|
||
|
|
size_t reg_size;
|
||
|
|
|
||
|
|
/* Total size of a slab for this bin's size class. */
|
||
|
|
size_t slab_size;
|
||
|
|
|
||
|
|
/* Total number of regions in a slab for this bin's size class. */
|
||
|
|
uint32_t nregs;
|
||
|
|
|
||
|
|
/* Number of sharded bins in each arena for this size class. */
|
||
|
|
uint32_t n_shards;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Metadata used to manipulate bitmaps for slabs associated with this
|
||
|
|
* bin.
|
||
|
|
*/
|
||
|
|
bitmap_info_t bitmap_info;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern bin_info_t bin_infos[SC_NBINS];
|
||
|
|
|
||
|
|
void bin_info_boot(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS]);
|
||
|
|
|
||
|
|
#endif /* JEMALLOC_INTERNAL_BIN_INFO_H */
|