1 | #include "jemalloc/internal/jemalloc_preamble.h" |
2 | #include "jemalloc/internal/jemalloc_internal_includes.h" |
3 | |
4 | #include "jemalloc/internal/assert.h" |
5 | #include "jemalloc/internal/bin.h" |
6 | #include "jemalloc/internal/sc.h" |
7 | #include "jemalloc/internal/witness.h" |
8 | |
9 | bool |
10 | bin_update_shard_size(unsigned bin_shard_sizes[SC_NBINS], size_t start_size, |
11 | size_t end_size, size_t nshards) { |
12 | if (nshards > BIN_SHARDS_MAX || nshards == 0) { |
13 | return true; |
14 | } |
15 | |
16 | if (start_size > SC_SMALL_MAXCLASS) { |
17 | return false; |
18 | } |
19 | if (end_size > SC_SMALL_MAXCLASS) { |
20 | end_size = SC_SMALL_MAXCLASS; |
21 | } |
22 | |
23 | /* Compute the index since this may happen before sz init. */ |
24 | szind_t ind1 = sz_size2index_compute(start_size); |
25 | szind_t ind2 = sz_size2index_compute(end_size); |
26 | for (unsigned i = ind1; i <= ind2; i++) { |
27 | bin_shard_sizes[i] = (unsigned)nshards; |
28 | } |
29 | |
30 | return false; |
31 | } |
32 | |
33 | void |
34 | bin_shard_sizes_boot(unsigned bin_shard_sizes[SC_NBINS]) { |
35 | /* Load the default number of shards. */ |
36 | for (unsigned i = 0; i < SC_NBINS; i++) { |
37 | bin_shard_sizes[i] = N_BIN_SHARDS_DEFAULT; |
38 | } |
39 | } |
40 | |
41 | bool |
42 | bin_init(bin_t *bin) { |
43 | if (malloc_mutex_init(&bin->lock, "bin" , WITNESS_RANK_BIN, |
44 | malloc_mutex_rank_exclusive)) { |
45 | return true; |
46 | } |
47 | bin->slabcur = NULL; |
48 | edata_heap_new(&bin->slabs_nonfull); |
49 | edata_list_active_init(&bin->slabs_full); |
50 | if (config_stats) { |
51 | memset(&bin->stats, 0, sizeof(bin_stats_t)); |
52 | } |
53 | return false; |
54 | } |
55 | |
56 | void |
57 | bin_prefork(tsdn_t *tsdn, bin_t *bin) { |
58 | malloc_mutex_prefork(tsdn, &bin->lock); |
59 | } |
60 | |
61 | void |
62 | bin_postfork_parent(tsdn_t *tsdn, bin_t *bin) { |
63 | malloc_mutex_postfork_parent(tsdn, &bin->lock); |
64 | } |
65 | |
66 | void |
67 | bin_postfork_child(tsdn_t *tsdn, bin_t *bin) { |
68 | malloc_mutex_postfork_child(tsdn, &bin->lock); |
69 | } |
70 | |