Disk cache: Stop evictions while performing final cleanup....

net/disk_cache/backend_impl.h

 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // See net/disk_cache/disk_cache.h for the public interface of the cache.
 
 #ifndef NET_DISK_CACHE_BACKEND_IMPL_H_
 #define NET_DISK_CACHE_BACKEND_IMPL_H_
 
 #include "base/file_path.h"
@@ skipping 66 matching lines @@
                                  CompletionCallback* callback);
   virtual int DoomEntriesSince(const base::Time initial_time,
                                CompletionCallback* callback);
   virtual int OpenNextEntry(void** iter, Entry** next_entry,
                             CompletionCallback* callback);
   virtual void EndEnumeration(void** iter);
   virtual void GetStats(StatsItems* stats);
 
   // Performs the actual initialization and final cleanup on destruction.
   int SyncInit();
+  void StartCleanup();

[gavinp, 2010/07/19 22:20:31]

Can we document the distinction between StartCleanup() and CleanupCache() here? 
They're really similar.

   void CleanupCache();
 
   // Same bahavior as OpenNextEntry but walks the list from back to front.
   int OpenPrevEntry(void** iter, Entry** prev_entry,
                     CompletionCallback* callback);
 
   // Synchronous implementation of the asynchronous interface.
   int SyncOpenEntry(const std::string& key, Entry** entry);
   int SyncCreateEntry(const std::string& key, Entry** entry);
   int SyncDoomEntry(const std::string& key);
@@ skipping 243 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(BackendImpl);
 };
 
 // Returns the prefered max cache size given the available disk space.
 int PreferedCacheSize(int64 available);
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_BACKEND_IMPL_H_