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| author | Qi Wang <interwq@gwu.edu> | 2022-05-06 11:28:25 -0700 |
|---|---|---|
| committer | Qi Wang <interwq@gwu.edu> | 2022-05-06 11:28:25 -0700 |
| commit | 54eaed1d8b56b1aa528be3bdd1877e59c56fa90c (patch) | |
| tree | e79620e0c00b1f8b6b698fbe74df6bae7d812ae2 /include/jemalloc/internal/bin_info.h | |
| parent | ea6b3e973b477b8061e0076bb257dbd7f3faa756 (diff) | |
| parent | 304c919829f9f340669b61fa64867cfe5dba8021 (diff) | |
| download | jemalloc-master.tar.gz | |
Diffstat (limited to 'include/jemalloc/internal/bin_info.h')
| -rw-r--r-- | include/jemalloc/internal/bin_info.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/jemalloc/internal/bin_info.h b/include/jemalloc/internal/bin_info.h new file mode 100644 index 00000000..7fe65c86 --- /dev/null +++ b/include/jemalloc/internal/bin_info.h @@ -0,0 +1,50 @@ +#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 */ |