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6d6fd57e09
We now handle compression in the shared cache item creation code. Compressing the cache item header with the already compressed blob doesn't help much so lets just remove it. Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9593>
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
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* Copyright © 2020 Valve 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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/* This is a basic c implementation of a fossilize db like format intended for
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* use with the Mesa shader cache.
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*
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* The format is compatible enough to allow the fossilize db tools to be used
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* to do things like merge db collections, but unlike fossilize db which uses
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* a zlib implementation for compression of data entries, we use zstd for
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* compression.
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*/
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#ifndef FOSSILIZE_DB_H
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#define FOSSILIZE_DB_H
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#ifdef HAVE_FLOCK
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#define FOZ_DB_UTIL 1
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#endif
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "simple_mtx.h"
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/* Max number of DBs our implementation can read from at once */
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#define FOZ_MAX_DBS 9 /* Default DB + 8 Read only DBs */
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#define FOSSILIZE_BLOB_HASH_LENGTH 40
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enum {
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FOSSILIZE_COMPRESSION_NONE = 1,
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FOSSILIZE_COMPRESSION_DEFLATE = 2
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};
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enum {
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FOSSILIZE_FORMAT_VERSION = 6,
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FOSSILIZE_FORMAT_MIN_COMPAT_VERSION = 5
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};
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struct foz_payload_header {
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uint32_t payload_size;
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uint32_t format;
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uint32_t crc;
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uint32_t uncompressed_size;
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};
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struct foz_db_entry {
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uint8_t file_idx;
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uint8_t key[20];
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uint64_t offset;
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struct foz_payload_header header;
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};
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struct foz_db {
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FILE *file[FOZ_MAX_DBS]; /* An array of all foz dbs */
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FILE *db_idx; /* The default writable foz db idx */
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simple_mtx_t mtx; /* Mutex for file/hash table read/writes */
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void *mem_ctx;
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struct hash_table_u64 *index_db; /* Hash table of all foz db entries */
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bool alive;
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};
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bool
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foz_prepare(struct foz_db *foz_db, char *cache_path);
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void
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foz_destroy(struct foz_db *foz_db);
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void *
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foz_read_entry(struct foz_db *foz_db, const uint8_t *cache_key_160bit,
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size_t *size);
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bool
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foz_write_entry(struct foz_db *foz_db, const uint8_t *cache_key_160bit,
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const void *blob, size_t size);
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#endif /* FOSSILIZE_DB_H */
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