| | 1 | /********************************************************************* |
| | 2 | * free_all() |
| | 3 | * |
| | 4 | * Empties all memory regions so that their entire buffer space is |
| | 5 | * considered unused. This allows the client to restart without |
| | 6 | * having to reallocate memory for the allocator regions, which helps |
| | 7 | * performance when this package gets used serially. |
| | 8 | *********************************************************************/ |
| | 9 | __private_extern__ |
| | 10 | void free_all(void) { |
| | 11 | malloc_region * cur_region; |
| | 12 | |
| | 13 | queue_iterate(&malloc_region_list, cur_region, malloc_region *, links) { |
| | 14 | |
| | 15 | queue_init(&cur_region->block_list); |
| | 16 | cur_region->free_size = cur_region->region_size - sizeof(malloc_region); |
| | 17 | cur_region->free_address = &cur_region->buffer; |
| | 18 | |
| | 19 | } |
| | 20 | |
| | 21 | queue_init(&sorted_free_block_list); |
| | 22 | |
| | 23 | #ifdef CLIENT_DEBUG |
| | 24 | current_block_total = 0; |
| | 25 | #endif /* CLIENT_DEBUG */ |
| | 26 | |
| | 27 | return; |
| | 28 | |
| | 29 | } /* free_all() */ |
| | 30 | |
| | 31 | |
| | 32 | /********************************************************************* |
| | 33 | * malloc_size() |
| | 34 | * |
| | 35 | *********************************************************************/ |
| | 36 | __private_extern__ |
| | 37 | size_t malloc_size(void * address) { |
| | 38 | malloc_region * found_region = NULL; |
| | 39 | malloc_block * found_block = NULL; |
| | 40 | |
| | 41 | malloc_find_block(address, &found_block, &found_region); |
| | 42 | |
| | 43 | |
| | 44 | /* If we couldn't find the requested block, |
| | 45 | * the caller is in error so return 0. |
| | 46 | */ |
| | 47 | if (found_block == NULL) { |
| | 48 | return 0; |
| | 49 | // FIXME: panic? |
| | 50 | } |
| | 51 | |
| | 52 | return (found_block->block_size - sizeof(malloc_block)); |
| | 53 | |
| | 54 | } /* malloc_size() */ |
| | 55 | |
| | 56 | |
| | 57 | /********************************************************************* |
| | 58 | * malloc_is_valid() |
| | 59 | * |
| | 60 | *********************************************************************/ |
| | 61 | __private_extern__ |
| | 62 | int malloc_is_valid(void * address){ |
| | 63 | malloc_region * found_region = NULL; |
| | 64 | malloc_block * found_block = NULL; |
| | 65 | |
| | 66 | malloc_find_block(address, &found_block, &found_region); |
| | 67 | |
| | 68 | if (found_block != NULL) { |
| | 69 | return 1; |
| | 70 | } else { |
| | 71 | return 0; |
| | 72 | } |
| | 73 | |
| | 74 | } /* malloc_is_valid() */ |
| | 75 | |
| | 76 | |
projects / apple / xnu.git / blame_incremental