[Experiment] purge-and-suspend

third_party/WebKit/Source/core/fetch/MemoryCache.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 293 matching lines @@
             MemoryCacheEntry* previous = current->m_previousInAllResourcesList;
 
             // Decoded data may reference other resources. Skip |current| if
             // |current| somehow got kicked out of cache during
             // destroyDecodedData().
             if (!resource || !contains(resource)) {
                 current = previous;
                 continue;
             }
 
+            if (strategy == MaximalPrune && resource->isLoaded()) {
+                resource->prune();
+                current = previous;
+                continue;
+            }
+
             if (!resource->hasClientsOrObservers() && !resource->isPreloaded() && resource->isLoaded()) {
                 // Destroy our decoded data. This will remove us from
                 // m_liveDecodedResources, and possibly move us to a different
                 // LRU list in m_allResources.
                 resource->prune();
 
                 if (targetSize && m_deadSize <= targetSize)
                     return;
             }
             current = previous;
@@ skipping 457 matching lines @@
                 printf("(%.1fK, %.1fK, %uA, %dR, %d); ", currentResource->decodedSize() / 1024.0f, (currentResource->encodedSize() + currentResource->overheadSize()) / 1024.0f, current->m_accessCount, currentResource->hasClientsOrObservers(), currentResource->isPurgeable());
 
             current = current->m_previousInAllResourcesList;
         }
     }
 }
 
 #endif // MEMORY_CACHE_STATS
 
 } // namespace blink