| 649 | } |
| 650 | |
| 651 | bool |
| 652 | tcache_boot(tsdn_t *tsdn) { |
| 653 | /* If necessary, clamp opt_lg_tcache_max. */ |
| 654 | if (opt_lg_tcache_max < 0 || (ZU(1) << opt_lg_tcache_max) < |
| 655 | SMALL_MAXCLASS) { |
| 656 | tcache_maxclass = SMALL_MAXCLASS; |
| 657 | } else { |
| 658 | tcache_maxclass = (ZU(1) << opt_lg_tcache_max); |
| 659 | } |
| 660 | |
| 661 | if (malloc_mutex_init(&tcaches_mtx, "tcaches", WITNESS_RANK_TCACHES, |
| 662 | malloc_mutex_rank_exclusive)) { |
| 663 | return true; |
| 664 | } |
| 665 | |
| 666 | nhbins = sz_size2index(tcache_maxclass) + 1; |
| 667 | |
| 668 | /* Initialize tcache_bin_info. */ |
| 669 | tcache_bin_info = (cache_bin_info_t *)base_alloc(tsdn, b0get(), nhbins |
| 670 | * sizeof(cache_bin_info_t), CACHELINE); |
| 671 | if (tcache_bin_info == NULL) { |
| 672 | return true; |
| 673 | } |
| 674 | stack_nelms = 0; |
| 675 | unsigned i; |
| 676 | for (i = 0; i < NBINS; i++) { |
| 677 | if ((bin_infos[i].nregs << 1) <= TCACHE_NSLOTS_SMALL_MIN) { |
| 678 | tcache_bin_info[i].ncached_max = |
| 679 | TCACHE_NSLOTS_SMALL_MIN; |
| 680 | } else if ((bin_infos[i].nregs << 1) <= |
| 681 | TCACHE_NSLOTS_SMALL_MAX) { |
| 682 | tcache_bin_info[i].ncached_max = |
| 683 | (bin_infos[i].nregs << 1); |
| 684 | } else { |
| 685 | tcache_bin_info[i].ncached_max = |
| 686 | TCACHE_NSLOTS_SMALL_MAX; |
| 687 | } |
| 688 | stack_nelms += tcache_bin_info[i].ncached_max; |
| 689 | } |
| 690 | for (; i < nhbins; i++) { |
| 691 | tcache_bin_info[i].ncached_max = TCACHE_NSLOTS_LARGE; |
| 692 | stack_nelms += tcache_bin_info[i].ncached_max; |
| 693 | } |
| 694 | |
| 695 | return false; |
| 696 | } |
| 697 | |
| 698 | void |
| 699 | tcache_prefork(tsdn_t *tsdn) { |
no test coverage detected