add PurgeResourceCache to track leaks

include/core/SkGraphics.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkGraphics_DEFINED
@@ skipping 79 matching lines @@
 
     /**
      *  These functions get/set the memory usage limit for the resource cache, used for temporary
      *  bitmaps and other resources. Entries are purged from the cache when the memory useage
      *  exceeds this limit.
      */
     static size_t GetResourceCacheTotalByteLimit();
     static size_t SetResourceCacheTotalByteLimit(size_t newLimit);
 
     /**
+     *  For debugging purposes, this will attempt to purge the resource cache. It
+     *  does not change the limit.
+     */
+    static void PurgeResourceCache();
+
+    /**
      *  When the cachable entry is very lage (e.g. a large scaled bitmap), adding it to the cache
      *  can cause most/all of the existing entries to be purged. To avoid the, the client can set
      *  a limit for a single allocation. If a cacheable entry would have been cached, but its size
      *  exceeds this limit, then we do not attempt to cache it at all.
      *
      *  Zero is the default value, meaning we always attempt to cache entries.
      */
     static size_t GetResourceCacheSingleAllocationByteLimit();
     static size_t SetResourceCacheSingleAllocationByteLimit(size_t newLimit);
 
@@ skipping 66 matching lines @@
 public:
     SkAutoGraphics() {
         SkGraphics::Init();
     }
     ~SkAutoGraphics() {
         SkGraphics::Term();
     }
 };
 
 #endif