projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
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 |