From: Grazvydas Ignotas Date: Wed, 15 Mar 2017 23:09:29 +0000 (+0200) Subject: util/disk_cache: hash timestamps into the cache keys X-Git-Tag: upstream/17.1.0~1054 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=feb716239e1a318eb844fd3bcaca1ffd6903067c;p=platform%2Fupstream%2Fmesa.git util/disk_cache: hash timestamps into the cache keys Instead of using a directory, hash the timestamps into the cache keys themselves. Since there is no more timestamp directory, there is no more need for deleting the cache of other mesa versions and we rely on eviction to clean up the old cache entries. This solves the problem of using several incarnations of disk_cache at the same time, where one deletes a directory belonging to the other, like when both OpenGL and gallium nine are used simultaneously (or several different mesa installations). v2: using additional blob instead of trying to clone sha1 state v3: (Timothy Arceri) don't use an opaque data type to store timestamp. V4: (Timothy Arceri) use blob to store driver keys just make sure to store null terminator for strings, and make sure blob is defined by disk_cache and not it's users. Signed-off-by: Grazvydas Ignotas Reviewed-by: Nicolai Hähnle Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100091 --- diff --git a/src/compiler/glsl/tests/cache_test.c b/src/compiler/glsl/tests/cache_test.c index b1b3c33..b604943 100644 --- a/src/compiler/glsl/tests/cache_test.c +++ b/src/compiler/glsl/tests/cache_test.c @@ -128,7 +128,7 @@ rmrf_local(const char *path) } static void -check_timestamp_and_gpu_id_directories_created(char *cache_dir) +check_directories_created(char *cache_dir) { bool sub_dirs_created = false; @@ -184,13 +184,13 @@ test_disk_cache_create(void) /* Create string with expected directory hierarchy */ char expected_dir_h[255]; sprintf(expected_dir_h, "%s%s%s", CACHE_TEST_TMP "/xdg-cache-home/mesa/", - get_arch_bitness_str(), "/make_check/test"); + get_arch_bitness_str(), "/test"); mkdir(CACHE_TEST_TMP, 0755); cache = disk_cache_create("test", "make_check"); expect_non_null(cache, "disk_cache_create with XDG_CACHE_HOME set"); - check_timestamp_and_gpu_id_directories_created(expected_dir_h); + check_directories_created(expected_dir_h); disk_cache_destroy(cache); @@ -205,13 +205,13 @@ test_disk_cache_create(void) sprintf(expected_dir_h, "%s%s%s", CACHE_TEST_TMP "/mesa-glsl-cache-dir/mesa/", get_arch_bitness_str(), - "/make_check/test"); + "/test"); mkdir(CACHE_TEST_TMP, 0755); cache = disk_cache_create("test", "make_check"); expect_non_null(cache, "disk_cache_create with MESA_GLSL_CACHE_DIR set"); - check_timestamp_and_gpu_id_directories_created(expected_dir_h); + check_directories_created(expected_dir_h); disk_cache_destroy(cache); } diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c index 17a6b5e..a7f18fc 100644 --- a/src/util/disk_cache.c +++ b/src/util/disk_cache.c @@ -82,6 +82,10 @@ struct disk_cache { /* Maximum size of all cached objects (in bytes). */ uint64_t max_size; + + /* Driver cache keys. */ + uint8_t *driver_keys_blob; + size_t driver_keys_blob_size; }; struct disk_cache_put_job { @@ -158,45 +162,8 @@ concatenate_and_mkdir(void *ctx, const char *path, const char *name) return NULL; } -static int -remove_dir(const char *fpath, const struct stat *sb, - int typeflag, struct FTW *ftwbuf) -{ - if (S_ISREG(sb->st_mode)) - unlink(fpath); - else if (S_ISDIR(sb->st_mode)) - rmdir(fpath); - - return 0; -} - -static void -remove_old_cache_directories(void *mem_ctx, const char *path, - const char *timestamp) -{ - DIR *dir = opendir(path); - - struct dirent* d_entry; - while((d_entry = readdir(dir)) != NULL) - { - char *full_path = - ralloc_asprintf(mem_ctx, "%s/%s", path, d_entry->d_name); - - struct stat sb; - if (stat(full_path, &sb) == 0 && S_ISDIR(sb.st_mode) && - strcmp(d_entry->d_name, timestamp) != 0 && - strcmp(d_entry->d_name, "..") != 0 && - strcmp(d_entry->d_name, ".") != 0) { - nftw(full_path, remove_dir, 20, FTW_DEPTH); - } - } - - closedir(dir); -} - static char * -create_mesa_cache_dir(void *mem_ctx, const char *path, const char *timestamp, - const char *gpu_name) +create_mesa_cache_dir(void *mem_ctx, const char *path, const char *gpu_name) { char *new_path = concatenate_and_mkdir(mem_ctx, path, "mesa"); if (new_path == NULL) @@ -211,13 +178,6 @@ create_mesa_cache_dir(void *mem_ctx, const char *path, const char *timestamp, if (new_path == NULL) return NULL; - /* Remove cache directories for old Mesa versions */ - remove_old_cache_directories(mem_ctx, new_path, timestamp); - - new_path = concatenate_and_mkdir(mem_ctx, new_path, timestamp); - if (new_path == NULL) - return NULL; - new_path = concatenate_and_mkdir(mem_ctx, new_path, gpu_name); if (new_path == NULL) return NULL; @@ -261,8 +221,7 @@ disk_cache_create(const char *gpu_name, const char *timestamp) if (mkdir_if_needed(path) == -1) goto fail; - path = create_mesa_cache_dir(local, path, timestamp, - gpu_name); + path = create_mesa_cache_dir(local, path, gpu_name); if (path == NULL) goto fail; } @@ -274,8 +233,7 @@ disk_cache_create(const char *gpu_name, const char *timestamp) if (mkdir_if_needed(xdg_cache_home) == -1) goto fail; - path = create_mesa_cache_dir(local, xdg_cache_home, timestamp, - gpu_name); + path = create_mesa_cache_dir(local, xdg_cache_home, gpu_name); if (path == NULL) goto fail; } @@ -311,7 +269,7 @@ disk_cache_create(const char *gpu_name, const char *timestamp) if (path == NULL) goto fail; - path = create_mesa_cache_dir(local, path, timestamp, gpu_name); + path = create_mesa_cache_dir(local, path, gpu_name); if (path == NULL) goto fail; } @@ -412,6 +370,17 @@ disk_cache_create(const char *gpu_name, const char *timestamp) */ util_queue_init(&cache->cache_queue, "disk_cache", 32, 1); + /* Create driver id keys */ + size_t ts_size = strlen(timestamp) + 1; + cache->driver_keys_blob_size = ts_size; + + cache->driver_keys_blob = + ralloc_size(cache, cache->driver_keys_blob_size); + if (!cache->driver_keys_blob) + goto fail; + + memcpy(cache->driver_keys_blob, timestamp, ts_size); + /* Seed our rand function */ s_rand_xorshift128plus(cache->seed_xorshift128plus, true); @@ -1078,7 +1047,13 @@ void disk_cache_compute_key(struct disk_cache *cache, const void *data, size_t size, cache_key key) { - _mesa_sha1_compute(data, size, key); + struct mesa_sha1 ctx; + + _mesa_sha1_init(&ctx); + _mesa_sha1_update(&ctx, cache->driver_keys_blob, + cache->driver_keys_blob_size); + _mesa_sha1_update(&ctx, data, size); + _mesa_sha1_final(&ctx, key); } #endif /* ENABLE_SHADER_CACHE */