util/disk_cache: Use queue state to skip put

If we move the blob-cache path into the async queue, then
path_init_failed is no longer a good way to check if puts
should be a no-op.  But fortunately checking if the queue
is initialized is, and is a more obvious check because
what it is guarding is a util_queue_add_job().

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22248>

src/util/disk_cache.c

@@ -317,7 +317,7 @@ disk_cache_destroy(struct disk_cache *cache)
              cache->stats.misses);
    }
 
-   if (cache && !cache->path_init_failed) {
+   if (cache && util_queue_is_initialized(&cache->cache_queue)) {
       util_queue_finish(&cache->cache_queue);
       util_queue_destroy(&cache->cache_queue);
 
@@ -551,7 +551,7 @@ disk_cache_put(struct disk_cache *cache, const cache_key key,
       return;
    }
 
-   if (cache->path_init_failed)
+   if (!util_queue_is_initialized(&cache->cache_queue))
       return;
 
    struct disk_cache_put_job *dc_job =
@@ -575,7 +575,7 @@ disk_cache_put_nocopy(struct disk_cache *cache, const cache_key key,
       return;
    }
 
-   if (cache->path_init_failed) {
+   if (!util_queue_is_initialized(&cache->cache_queue)) {
       free(data);
       return;
    }