New disk cache eviction algorithm.

net/disk_cache/stats.h

 // Copyright (c) 2006-2008 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_STATS_H_
 #define NET_DISK_CACHE_STATS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 10 matching lines @@
 // This class stores cache-specific usage information, for tunning purposes.
 class Stats {
  public:
   static const int kDataSizesLength = 28;
   enum Counters {
     MIN_COUNTER = 0,
     OPEN_MISS = MIN_COUNTER,
     OPEN_HIT,
     CREATE_MISS,
     CREATE_HIT,
+    RESURRECT_HIT,
     CREATE_ERROR,
     TRIM_ENTRY,
     DOOM_ENTRY,
     DOOM_CACHE,
     INVALID_ENTRY,
     OPEN_ENTRIES,  // Average number of open entries.
     MAX_ENTRIES,  // Maximum number of open entries.
     TIMER,
     READ_DATA,
     WRITE_DATA,
@@ skipping 32 matching lines @@
   int64 counters_[MAX_COUNTER];
   scoped_ptr<StatsHistogram> size_histogram_;
 
   DISALLOW_COPY_AND_ASSIGN(Stats);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_STATS_H_