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Side by Side Diff: cc/base/rolling_time_delta_history.h

Issue 2748263002: Move cc::DisplayItemList and related classes into cc/paint/ (Closed)
Patch Set: Merge branch 'master' into ccpaint Created 3 years, 9 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_ 5 #ifndef CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_
6 #define CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_ 6 #define CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 9
10 #include <deque> 10 #include <deque>
11 #include <set> 11 #include <set>
12 12
13 #include "base/macros.h" 13 #include "base/macros.h"
14 #include "base/time/time.h" 14 #include "base/time/time.h"
15 #include "cc/base/cc_export.h" 15 #include "cc/base/base_export.h"
16 16
17 namespace cc { 17 namespace cc {
18 18
19 // Stores a limited number of samples. When the maximum size is reached, each 19 // Stores a limited number of samples. When the maximum size is reached, each
20 // insertion results in the deletion of the oldest remaining sample. 20 // insertion results in the deletion of the oldest remaining sample.
21 class CC_EXPORT RollingTimeDeltaHistory { 21 class CC_BASE_EXPORT RollingTimeDeltaHistory {
22 public: 22 public:
23 explicit RollingTimeDeltaHistory(size_t max_size); 23 explicit RollingTimeDeltaHistory(size_t max_size);
24 24
25 ~RollingTimeDeltaHistory(); 25 ~RollingTimeDeltaHistory();
26 26
27 void InsertSample(base::TimeDelta time); 27 void InsertSample(base::TimeDelta time);
28 28
29 void Clear(); 29 void Clear();
30 30
31 // Returns the smallest sample that is greater than or equal to the specified 31 // Returns the smallest sample that is greater than or equal to the specified
32 // percent of samples. If there aren't any samples, returns base::TimeDelta(). 32 // percent of samples. If there aren't any samples, returns base::TimeDelta().
33 base::TimeDelta Percentile(double percent) const; 33 base::TimeDelta Percentile(double percent) const;
34 34
35 private: 35 private:
36 typedef std::multiset<base::TimeDelta> TimeDeltaMultiset; 36 typedef std::multiset<base::TimeDelta> TimeDeltaMultiset;
37 37
38 TimeDeltaMultiset sample_set_; 38 TimeDeltaMultiset sample_set_;
39 std::deque<TimeDeltaMultiset::iterator> chronological_sample_deque_; 39 std::deque<TimeDeltaMultiset::iterator> chronological_sample_deque_;
40 size_t max_size_; 40 size_t max_size_;
41 41
42 DISALLOW_COPY_AND_ASSIGN(RollingTimeDeltaHistory); 42 DISALLOW_COPY_AND_ASSIGN(RollingTimeDeltaHistory);
43 }; 43 };
44 44
45 } // namespace cc 45 } // namespace cc
46 46
47 #endif // CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_ 47 #endif // CC_BASE_ROLLING_TIME_DELTA_HISTORY_H_
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