| #include "jemalloc/internal/jemalloc_preamble.h" |
| #include "jemalloc/internal/jemalloc_internal_includes.h" |
| |
| #include "jemalloc/internal/assert.h" |
| #include "jemalloc/internal/bin.h" |
| #include "jemalloc/internal/sc.h" |
| #include "jemalloc/internal/witness.h" |
| |
| bool |
| bin_update_shard_size(unsigned bin_shard_sizes[SC_NBINS], size_t start_size, |
| size_t end_size, size_t nshards) { |
| if (nshards > BIN_SHARDS_MAX || nshards == 0) { |
| return true; |
| } |
| |
| if (start_size > SC_SMALL_MAXCLASS) { |
| return false; |
| } |
| if (end_size > SC_SMALL_MAXCLASS) { |
| end_size = SC_SMALL_MAXCLASS; |
| } |
| |
| /* Compute the index since this may happen before sz init. */ |
| szind_t ind1 = sz_size2index_compute(start_size); |
| szind_t ind2 = sz_size2index_compute(end_size); |
| for (unsigned i = ind1; i <= ind2; i++) { |
| bin_shard_sizes[i] = (unsigned)nshards; |
| } |
| |
| return false; |
| } |
| |
| void |
| bin_shard_sizes_boot(unsigned bin_shard_sizes[SC_NBINS]) { |
| /* Load the default number of shards. */ |
| for (unsigned i = 0; i < SC_NBINS; i++) { |
| bin_shard_sizes[i] = N_BIN_SHARDS_DEFAULT; |
| } |
| } |
| |
| bool |
| bin_init(bin_t *bin) { |
| if (malloc_mutex_init(&bin->lock, "bin", WITNESS_RANK_BIN, |
| malloc_mutex_rank_exclusive)) { |
| return true; |
| } |
| bin->slabcur = NULL; |
| edata_heap_new(&bin->slabs_nonfull); |
| edata_list_active_init(&bin->slabs_full); |
| if (config_stats) { |
| memset(&bin->stats, 0, sizeof(bin_stats_t)); |
| } |
| return false; |
| } |
| |
| void |
| bin_prefork(tsdn_t *tsdn, bin_t *bin) { |
| malloc_mutex_prefork(tsdn, &bin->lock); |
| } |
| |
| void |
| bin_postfork_parent(tsdn_t *tsdn, bin_t *bin) { |
| malloc_mutex_postfork_parent(tsdn, &bin->lock); |
| } |
| |
| void |
| bin_postfork_child(tsdn_t *tsdn, bin_t *bin) { |
| malloc_mutex_postfork_child(tsdn, &bin->lock); |
| } |