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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_DISK_CACHE_STATS_H_ | 5 #ifndef NET_DISK_CACHE_STATS_H_ |
6 #define NET_DISK_CACHE_STATS_H_ | 6 #define NET_DISK_CACHE_STATS_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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73 | 73 |
74 void GetItems(StatsItems* items); | 74 void GetItems(StatsItems* items); |
75 int GetHitRatio() const; | 75 int GetHitRatio() const; |
76 int GetResurrectRatio() const; | 76 int GetResurrectRatio() const; |
77 void ResetRatios(); | 77 void ResetRatios(); |
78 | 78 |
79 // Returns the lower bound of the space used by entries bigger than 512 KB. | 79 // Returns the lower bound of the space used by entries bigger than 512 KB. |
80 int GetLargeEntriesSize(); | 80 int GetLargeEntriesSize(); |
81 | 81 |
82 // Writes the stats into |data|, to be stored at the given cache address. | 82 // Writes the stats into |data|, to be stored at the given cache address. |
83 bool SerializeStats(void* data, int num_bytes, Addr* address); | 83 // Returns the number of bytes copied. |
| 84 int SerializeStats(void* data, int num_bytes, Addr* address); |
84 | 85 |
85 // Support for StatsHistograms. Together, these methods allow StatsHistograms | 86 // Support for StatsHistograms. Together, these methods allow StatsHistograms |
86 // to take a snapshot of the data_sizes_ as the histogram data. | 87 // to take a snapshot of the data_sizes_ as the histogram data. |
87 int GetBucketRange(size_t i) const; | 88 int GetBucketRange(size_t i) const; |
88 void Snapshot(base::HistogramSamples* samples) const; | 89 void Snapshot(base::HistogramSamples* samples) const; |
89 | 90 |
90 private: | 91 private: |
91 int GetStatsBucket(int32 size); | 92 int GetStatsBucket(int32 size); |
92 int GetRatio(Counters hit, Counters miss) const; | 93 int GetRatio(Counters hit, Counters miss) const; |
93 | 94 |
94 Addr storage_addr_; | 95 Addr storage_addr_; |
95 int data_sizes_[kDataSizesLength]; | 96 int data_sizes_[kDataSizesLength]; |
96 int64 counters_[MAX_COUNTER]; | 97 int64 counters_[MAX_COUNTER]; |
97 StatsHistogram* size_histogram_; | 98 StatsHistogram* size_histogram_; |
98 | 99 |
99 DISALLOW_COPY_AND_ASSIGN(Stats); | 100 DISALLOW_COPY_AND_ASSIGN(Stats); |
100 }; | 101 }; |
101 | 102 |
102 } // namespace disk_cache | 103 } // namespace disk_cache |
103 | 104 |
104 #endif // NET_DISK_CACHE_STATS_H_ | 105 #endif // NET_DISK_CACHE_STATS_H_ |
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