This patch makes disk_cache initialize path and index lazily so
that we can utilize disk_cache without a path using callback
functionality introduced by next patch.
Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
src/util/disk_cache.c | 114 ++++++++++++++++++++++++++++++++------------------
1 file changed, 73 insertions(+), 41 deletions(-)
diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c
index 2884d3c9c1..2fb07699b5 100644
--- a/src/util/disk_cache.c
+++ b/src/util/disk_cache.c
@@ -77,6 +77,7 @@
struct disk_cache {
/* The path to the cache directory. */
char *path;
+ bool path_init_failed;
/* Thread queue for compressing and writing cache entries to disk */
struct util_queue cache_queue;
@@ -178,27 +179,18 @@ concatenate_and_mkdir(void *ctx, const char *path, const
char *name)
return NULL;
}
-#define DRV_KEY_CPY(_dst, _src, _src_size) \
-do { \
- memcpy(_dst, _src, _src_size); \
- _dst += _src_size; \
-} while (0);
-
-struct disk_cache *
-disk_cache_create(const char *gpu_name, const char *timestamp,
- uint64_t driver_flags)
+static bool
+disk_cache_path_init(struct disk_cache *cache)
{
- void *local;
- struct disk_cache *cache = NULL;
- char *path, *max_size_str;
- uint64_t max_size;
+ void *local = NULL;
+ char *path;
int fd = -1;
struct stat sb;
size_t size;
/* If running as a users other than the real user disable cache */
if (geteuid() != getuid())
- return NULL;
+ goto fail;
/* A ralloc context for transient data during this invocation. */
local = ralloc_context(NULL);
@@ -273,10 +265,6 @@ disk_cache_create(const char *gpu_name, const char
*timestamp,
goto fail;
}
- cache = ralloc(NULL, struct disk_cache);
- if (cache == NULL)
- goto fail;
-
cache->path = ralloc_strdup(cache, path);
if (cache->path == NULL)
goto fail;
@@ -325,6 +313,58 @@ disk_cache_create(const char *gpu_name, const char
*timestamp,
cache->size = (uint64_t *) cache->index_mmap;
cache->stored_keys = cache->index_mmap + sizeof(uint64_t);
+ /* 1 thread was chosen because we don't really care about getting things
+ * to disk quickly just that it's not blocking other tasks.
+ *
+ * The queue will resize automatically when it's full, so adding new jobs
+ * doesn't stall.
+ */
+ util_queue_init(&cache->cache_queue, "disk_cache", 32, 1,
+ UTIL_QUEUE_INIT_RESIZE_IF_FULL |
+ UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY);
+
+ ralloc_free(local);
+
+ return true;
+
+ fail:
+ if (fd != -1)
+ close(fd);
+
+ if (local)
+ ralloc_free(local);
+
+ cache->path_init_failed = true;
+
+ return false;
+}
+
+#define DRV_KEY_CPY(_dst, _src, _src_size) \
+do { \
+ memcpy(_dst, _src, _src_size); \
+ _dst += _src_size; \
+} while (0);
+
+struct disk_cache *
+disk_cache_create(const char *gpu_name, const char *timestamp,
+ uint64_t driver_flags)
+{
+ struct disk_cache *cache = NULL;
+ char *max_size_str;
+ uint64_t max_size;
+
+ /* If running as a users other than the real user disable cache */
+ if (geteuid() != getuid())
+ return NULL;
+
+ /* At user request, disable shader cache entirely. */
+ if (env_var_as_boolean("MESA_GLSL_CACHE_DISABLE", false))
+ return NULL;
+
+ cache = rzalloc(NULL, struct disk_cache);
+ if (cache == NULL)
+ return NULL;
+
max_size = 0;
max_size_str = getenv("MESA_GLSL_CACHE_MAX_SIZE");
@@ -360,16 +400,6 @@ disk_cache_create(const char *gpu_name, const char
*timestamp,
cache->max_size = max_size;
- /* 1 thread was chosen because we don't really care about getting things
- * to disk quickly just that it's not blocking other tasks.
- *
- * The queue will resize automatically when it's full, so adding new jobs
- * doesn't stall.
- */
- util_queue_init(&cache->cache_queue, "disk_cache", 32, 1,
- UTIL_QUEUE_INIT_RESIZE_IF_FULL |
- UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY);
-
uint8_t cache_version = CACHE_VERSION;
size_t cv_size = sizeof(cache_version);
cache->driver_keys_blob_size = cv_size;
@@ -392,8 +422,10 @@ disk_cache_create(const char *gpu_name, const char
*timestamp,
cache->driver_keys_blob =
ralloc_size(cache, cache->driver_keys_blob_size);
- if (!cache->driver_keys_blob)
- goto fail;
+ if (!cache->driver_keys_blob) {
+ ralloc_free(cache);
+ return NULL;
+ }
uint8_t *drv_key_blob = cache->driver_keys_blob;
DRV_KEY_CPY(drv_key_blob, &cache_version, cv_size)
@@ -405,18 +437,7 @@ disk_cache_create(const char *gpu_name, const char
*timestamp,
/* Seed our rand function */
s_rand_xorshift128plus(cache->seed_xorshift128plus, true);
- ralloc_free(local);
-
return cache;
-
- fail:
- if (fd != -1)
- close(fd);
- if (cache)
- ralloc_free(cache);
- ralloc_free(local);
-
- return NULL;
}
void
@@ -441,6 +462,9 @@ get_cache_file(struct disk_cache *cache, const cache_key
key)
char buf[41];
char *filename;
+ if (!cache->path)
+ return NULL;
+
_mesa_sha1_format(buf, key);
if (asprintf(&filename, "%s/%c%c/%s", cache->path, buf[0],
buf[1], buf + 2) == -1)
@@ -1173,6 +1197,9 @@ disk_cache_put_key(struct disk_cache *cache, const
cache_key key)
int i = CPU_TO_LE32(*key_chunk) & CACHE_INDEX_KEY_MASK;
unsigned char *entry;
+ if (!cache->path)
+ return;
+
entry = &cache->stored_keys[i * CACHE_KEY_SIZE];
memcpy(entry, key, CACHE_KEY_SIZE);
@@ -1192,6 +1219,11 @@ disk_cache_has_key(struct disk_cache *cache, const
cache_key key)
int i = CPU_TO_LE32(*key_chunk) & CACHE_INDEX_KEY_MASK;
unsigned char *entry;
+ /* Try initializing path only once. */
+ if (cache->path_init_failed ||
+ (!cache->path && !disk_cache_path_init(cache)))
+ return false;
+
entry = &cache->stored_keys[i * CACHE_KEY_SIZE];
return memcmp(entry, key, CACHE_KEY_SIZE) == 0;
--
2.14.3
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