Use spinlocks for main cache lock

Partly by Ripduman Sohan

Appears to significantly help prevent performance dropoff from additional
threads, but only when the locks are frequently contested and are short.

1 files changed, 2 insertions, 2 deletions

diff --git a/assoc.c b/assoc.c
index 9500b00..59cbb0f 100644
--- a/assoc.c
+++ b/assoc.c
@@ -205,7 +205,7 @@ static void *assoc_maintenance_thread(void *arg) {
 
         /* Lock the cache, and bulk move multiple buckets to the new
          * hash table. */
-        pthread_mutex_lock(&cache_lock);
+        mutex_lock(&cache_lock);
 
         for (ii = 0; ii < hash_bulk_move && expanding; ++ii) {
             item *it, *next;
@@ -264,7 +264,7 @@ int start_assoc_maintenance_thread() {
 }
 
 void stop_assoc_maintenance_thread() {
-    pthread_mutex_lock(&cache_lock);
+    mutex_lock(&cache_lock);
     do_run_maintenance_thread = 0;
     pthread_cond_signal(&maintenance_cond);
     pthread_mutex_unlock(&cache_lock);