Disk Cache: New interface that enables asynchronous completion...

net/disk_cache/mem_backend_impl.h

 // Copyright (c) 2006-2009 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_MEM_BACKEND_IMPL_H__
 #define NET_DISK_CACHE_MEM_BACKEND_IMPL_H__
 
 #include "base/hash_tables.h"
@@ skipping 11 matching lines @@
  public:
   MemBackendImpl() : max_size_(0), current_size_(0) {}
   ~MemBackendImpl();
 
   // Performs general initialization for this current instance of the cache.
   bool Init();
 
   // Backend interface.
   virtual int32 GetEntryCount() const;
   virtual bool OpenEntry(const std::string& key, Entry** entry);
+  virtual int OpenEntry(const std::string& key, Entry** entry,
+                        CompletionCallback* callback);
   virtual bool CreateEntry(const std::string& key, Entry** entry);
+  virtual int CreateEntry(const std::string& key, Entry** entry,
+                          CompletionCallback* callback);
   virtual bool DoomEntry(const std::string& key);
   virtual bool DoomAllEntries();
+  virtual int DoomAllEntries(CompletionCallback* callback);
   virtual bool DoomEntriesBetween(const base::Time initial_time,
                                   const base::Time end_time);
+  virtual int DoomEntriesBetween(const base::Time initial_time,
+                                 const base::Time end_time,
+                                 CompletionCallback* callback);
   virtual bool DoomEntriesSince(const base::Time initial_time);
+  virtual int DoomEntriesSince(const base::Time initial_time,
+                               CompletionCallback* callback);
   virtual bool OpenNextEntry(void** iter, Entry** next_entry);
+  virtual int OpenNextEntry(void** iter, Entry** next_entry,
+                            CompletionCallback* callback);
   virtual void EndEnumeration(void** iter);
   virtual void GetStats(
       std::vector<std::pair<std::string, std::string> >* stats) {}
 
   // Sets the maximum size for the total amount of data stored by this instance.
   bool SetMaxSize(int max_bytes);
 
   // Permanently deletes an entry.
   void InternalDoomEntry(MemEntryImpl* entry);
 
@@ skipping 31 matching lines @@
   MemRankings rankings_;  // Rankings to be able to trim the cache.
   int32 max_size_;        // Maximum data size for this instance.
   int32 current_size_;
 
   DISALLOW_EVIL_CONSTRUCTORS(MemBackendImpl);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_MEM_BACKEND_IMPL_H__