[Mesa-dev] [PATCH] disk_cache: make the thread queue resizable and low priority

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/util/disk_cache.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c
index b789a45..33e4dc8 100644
--- a/src/util/disk_cache.c
+++ b/src/util/disk_cache.c
@@ -351,27 +351,29 @@ disk_cache_create(const char *gpu_name, const char *timestamp,
       }
    }
 
    /* Default to 1GB for maximum cache size. */
    if (max_size == 0) {
       max_size = 1024*1024*1024;
    }
 
    cache->max_size = max_size;
 
-   /* A limit of 32 jobs was choosen as observations of Deus Ex start-up times
-    * showed that we reached at most 11 jobs on an Intel i5-6400 CPU at 2.70GHz
-    * (a fairly modest desktop CPU). 1 thread was chosen because we don't
-    * really care about getting things to disk quickly just that it's not
-    * blocking other tasks.
+   /* 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, 0);
+   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;
 
    /* Create driver id keys */
    size_t ts_size = strlen(timestamp) + 1;
    size_t gpu_name_size = strlen(gpu_name) + 1;
    cache->driver_keys_blob_size += ts_size;
    cache->driver_keys_blob_size += gpu_name_size;
-- 
2.7.4