Changeset 18681

Timestamp:

09/15/2011 08:23:00 PM (13 years ago)

Author:

duck_

Message:

Introduce wp_suspend_cache_addition() to allow reduced memory usage when cache additions aren't useful. Fixes #5389.

Location:

trunk/wp-includes

Files:

• cache.php (modified) (1 diff)
• functions.php (modified) (1 diff)

trunk/wp-includes/cache.php

@@ -295 +295 @@
      */
     function add( $key, $data, $group = 'default', $expire = '' ) {
+        if ( wp_suspend_cache_addition() )
+            return false;
+
         if ( empty ($group) )
             $group = 'default';

trunk/wp-includes/functions.php

@@ -3711 +3711 @@
 
 /**
+ * Temporarily suspend cache additions.
+ *
+ * Stops more data being added to the cache, but still allows cache retrieval.
+ * This is useful for actions, such as imports, when a lot of data would otherwise
+ * be almost uselessly added to the cache.
+ *
+ * Suspension lasts for a single page load at most. Remember to call this
+ * function again if you wish to re-enable cache adds earlier.
+ *
+ * @since 3.3.0
+ *
+ * @param bool $suspend Optional. Suspends additions if true, re-enables them if false.
+ * @return bool The current suspend setting
+ */
+function wp_suspend_cache_addition( $suspend = null ) {
+    static $_suspend = false;
+
+    if ( is_bool( $suspend ) )
+        $_suspend = $suspend;
+
+    return $_suspend;
+}
+
+/**
  * Suspend cache invalidation.
  *