1 /* 2 * Copyright © 2014 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #ifndef DISK_CACHE_OS_H 25 #define DISK_CACHE_OS_H 26 27 #include "util/u_queue.h" 28 29 #if DETECT_OS_WINDOWS 30 31 /* TODO: implement disk cache support on windows */ 32 33 #else 34 35 #include "util/fossilize_db.h" 36 37 /* Number of bits to mask off from a cache key to get an index. */ 38 #define CACHE_INDEX_KEY_BITS 16 39 40 /* Mask for computing an index from a key. */ 41 #define CACHE_INDEX_KEY_MASK ((1 << CACHE_INDEX_KEY_BITS) - 1) 42 43 /* The number of keys that can be stored in the index. */ 44 #define CACHE_INDEX_MAX_KEYS (1 << CACHE_INDEX_KEY_BITS) 45 46 struct disk_cache { 47 /* The path to the cache directory. */ 48 char *path; 49 bool path_init_failed; 50 51 /* Thread queue for compressing and writing cache entries to disk */ 52 struct util_queue cache_queue; 53 54 struct foz_db foz_db; 55 56 /* Seed for rand, which is used to pick a random directory */ 57 uint64_t seed_xorshift128plus[2]; 58 59 /* A pointer to the mmapped index file within the cache directory. */ 60 uint8_t *index_mmap; 61 size_t index_mmap_size; 62 63 /* Pointer to total size of all objects in cache (within index_mmap) */ 64 uint64_t *size; 65 66 /* Pointer to stored keys, (within index_mmap). */ 67 uint8_t *stored_keys; 68 69 /* Maximum size of all cached objects (in bytes). */ 70 uint64_t max_size; 71 72 /* Driver cache keys. */ 73 uint8_t *driver_keys_blob; 74 size_t driver_keys_blob_size; 75 76 disk_cache_put_cb blob_put_cb; 77 disk_cache_get_cb blob_get_cb; 78 }; 79 80 struct disk_cache_put_job { 81 struct util_queue_fence fence; 82 83 struct disk_cache *cache; 84 85 cache_key key; 86 87 /* Copy of cache data to be compressed and written. */ 88 void *data; 89 90 /* Size of data to be compressed and written. */ 91 size_t size; 92 93 struct cache_item_metadata cache_item_metadata; 94 }; 95 96 char * 97 disk_cache_generate_cache_dir(void *mem_ctx, const char *gpu_name, 98 const char *driver_id); 99 100 void 101 disk_cache_evict_lru_item(struct disk_cache *cache); 102 103 void 104 disk_cache_evict_item(struct disk_cache *cache, char *filename); 105 106 void * 107 disk_cache_load_item_foz(struct disk_cache *cache, const cache_key key, 108 size_t *size); 109 110 void * 111 disk_cache_load_item(struct disk_cache *cache, char *filename, size_t *size); 112 113 char * 114 disk_cache_get_cache_filename(struct disk_cache *cache, const cache_key key); 115 116 bool 117 disk_cache_write_item_to_disk_foz(struct disk_cache_put_job *dc_job); 118 119 void 120 disk_cache_write_item_to_disk(struct disk_cache_put_job *dc_job, 121 char *filename); 122 123 bool 124 disk_cache_enabled(void); 125 126 bool 127 disk_cache_load_cache_index(void *mem_ctx, struct disk_cache *cache); 128 129 bool 130 disk_cache_mmap_cache_index(void *mem_ctx, struct disk_cache *cache, 131 char *path); 132 133 void 134 disk_cache_destroy_mmap(struct disk_cache *cache); 135 136 #endif 137 138 #endif /* DISK_CACHE_OS_H */ 139