Disk cache v3 ref2

net/disk_cache/v3/eviction_v3.h

 // Copyright (c) 2012 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.
 
-#ifndef NET_DISK_CACHE_EVICTION_H_
-#define NET_DISK_CACHE_EVICTION_H_
+#ifndef NET_DISK_CACHE_V3_EVICTION_V3_H_
+#define NET_DISK_CACHE_V3_EVICTION_V3_H_
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
-#include "net/disk_cache/disk_format.h"
-#include "net/disk_cache/rankings.h"
+#include "net/base/completion_callback.h"
+#include "net/disk_cache/v3/disk_format_v3.h"
+#include "net/disk_cache/v3/index_table.h"
 
 namespace disk_cache {
 
-class BackendImpl;
-class EntryImpl;
+class BackendImplV3;
+class EntryImplV3;
 
 // This class implements the eviction algorithm for the cache and it is tightly
 // integrated with BackendImpl.
-class Eviction {
+class EvictionV3 {
  public:
-  Eviction();
-  ~Eviction();
+  EvictionV3();
+  ~EvictionV3();
 
-  void Init(BackendImpl* backend);
+  void Init(BackendImplV3* backend);
   void Stop();
 
   // Deletes entries from the cache until the current size is below the limit.
   // If empty is true, the whole cache will be trimmed, regardless of being in
   // use.
-  void TrimCache(bool empty);
+  void TrimCache();
+  int TrimAllCache(const net::CompletionCallback& callback);
 
   // Notifications of interesting events for a given entry.
-  void OnOpenEntry(EntryImpl* entry);
-  void OnCreateEntry(EntryImpl* entry);
+  void OnOpenEntry(EntryImplV3* entry);
+  void OnCreateEntry(EntryImplV3* entry);
+  void OnResurrectEntry(EntryImplV3* entry);
+  void OnEvictEntryComplete();
 
   // Testing interface.
   void SetTestMode();
   void TrimDeletedList(bool empty);
 
  private:
   void PostDelayedTrim();
   void DelayedTrim();
   bool ShouldTrim();
   bool ShouldTrimDeleted();
-  bool EvictEntry(CacheRankingsBlock* node, bool empty, Rankings::List list);
+  int EvictEntry(uint32 hash, Addr address);
 
-  void TrimCacheV2(bool empty);
+  // Returns false when done trimming the cache.
+  bool TrimCacheImpl();
   void TrimDeleted(bool empty);
 
-  bool NodeIsOldEnough(CacheRankingsBlock* node, int list);
-  int SelectListByLength(Rankings::ScopedRankingsBlock* next);
-  void ReportListStats();
+  int GetTimestampForGoup(int group);
 
-  BackendImpl* backend_;
-  Rankings* rankings_;
-  IndexHeader* header_;
+  bool EvictionV3::CellIsOldEnough(const CellList& cells, int multiplier);
+  EntryGroup SelectListByLength();
+  void ReportListStats(int time1, int time2, int time3);
+
+  BackendImplV3* backend_;
+  IndexTable* index_;
+  IndexHeaderV3* header_;
   int max_size_;
   int trim_delays_;
   int index_size_;
-  bool new_eviction_;
+  bool lru_;
   bool first_trim_;
   bool trimming_;
   bool delay_trim_;
   bool init_;
   bool test_mode_;
-  base::WeakPtrFactory<Eviction> ptr_factory_;
+  bool empty_;
+  base::WeakPtrFactory<EvictionV3> ptr_factory_;
+  CellList no_use_cells_;
+  CellList low_use_cells_;
+  CellList high_use_cells_;
+  CellList* cells_to_evict_;
+  net::CompletionCallback callback_;
 
-  DISALLOW_COPY_AND_ASSIGN(Eviction);
+  DISALLOW_COPY_AND_ASSIGN(EvictionV3);
 };
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_EVICTION_H_
+#endif  // NET_DISK_CACHE_V3_EVICTION_V3_H_