139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef DISK_CACHE_OS_H
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#define DISK_CACHE_OS_H
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#include "util/u_queue.h"
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#if DETECT_OS_WINDOWS
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/* TODO: implement disk cache support on windows */
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#else
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#include "util/fossilize_db.h"
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/* Number of bits to mask off from a cache key to get an index. */
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#define CACHE_INDEX_KEY_BITS 16
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/* Mask for computing an index from a key. */
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#define CACHE_INDEX_KEY_MASK ((1 << CACHE_INDEX_KEY_BITS) - 1)
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/* The number of keys that can be stored in the index. */
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#define CACHE_INDEX_MAX_KEYS (1 << CACHE_INDEX_KEY_BITS)
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struct disk_cache {
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/* The path to the cache directory. */
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char *path;
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bool path_init_failed;
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/* Thread queue for compressing and writing cache entries to disk */
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struct util_queue cache_queue;
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struct foz_db foz_db;
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/* Seed for rand, which is used to pick a random directory */
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uint64_t seed_xorshift128plus[2];
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/* A pointer to the mmapped index file within the cache directory. */
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uint8_t *index_mmap;
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size_t index_mmap_size;
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/* Pointer to total size of all objects in cache (within index_mmap) */
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uint64_t *size;
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/* Pointer to stored keys, (within index_mmap). */
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uint8_t *stored_keys;
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/* Maximum size of all cached objects (in bytes). */
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uint64_t max_size;
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/* Driver cache keys. */
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uint8_t *driver_keys_blob;
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size_t driver_keys_blob_size;
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disk_cache_put_cb blob_put_cb;
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disk_cache_get_cb blob_get_cb;
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};
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struct disk_cache_put_job {
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struct util_queue_fence fence;
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struct disk_cache *cache;
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cache_key key;
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/* Copy of cache data to be compressed and written. */
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void *data;
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/* Size of data to be compressed and written. */
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size_t size;
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struct cache_item_metadata cache_item_metadata;
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};
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char *
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disk_cache_generate_cache_dir(void *mem_ctx, const char *gpu_name,
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const char *driver_id);
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void
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disk_cache_evict_lru_item(struct disk_cache *cache);
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void
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disk_cache_evict_item(struct disk_cache *cache, char *filename);
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void *
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disk_cache_load_item_foz(struct disk_cache *cache, const cache_key key,
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size_t *size);
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void *
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disk_cache_load_item(struct disk_cache *cache, char *filename, size_t *size);
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char *
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disk_cache_get_cache_filename(struct disk_cache *cache, const cache_key key);
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bool
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disk_cache_write_item_to_disk_foz(struct disk_cache_put_job *dc_job);
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void
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disk_cache_write_item_to_disk(struct disk_cache_put_job *dc_job,
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char *filename);
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bool
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disk_cache_enabled(void);
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bool
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disk_cache_load_cache_index(void *mem_ctx, struct disk_cache *cache);
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bool
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disk_cache_mmap_cache_index(void *mem_ctx, struct disk_cache *cache,
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char *path);
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void
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disk_cache_destroy_mmap(struct disk_cache *cache);
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#endif
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#endif /* DISK_CACHE_OS_H */
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