Page Speed Optimization Libraries
1.6.29.3
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00001 /* 00002 * Copyright 2012 Google Inc. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http:///www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00024 00025 #ifndef NET_INSTAWEB_UTIL_PUBLIC_SPLIT_STATISTICS_H_ 00026 #define NET_INSTAWEB_UTIL_PUBLIC_SPLIT_STATISTICS_H_ 00027 00028 #include "net/instaweb/util/public/basictypes.h" 00029 #include "net/instaweb/util/public/scoped_ptr.h" 00030 #include "net/instaweb/util/public/statistics.h" 00031 #include "net/instaweb/util/public/statistics_template.h" 00032 #include "net/instaweb/util/public/string_util.h" 00033 00034 namespace net_instaweb { 00035 00036 class AbstractMutex; 00037 class MessageHandler; 00038 class StatisticsLogger; 00039 class ThreadSystem; 00040 class Writer; 00041 00044 class SplitVariable : public Variable { 00045 public: 00049 SplitVariable(Variable* rw, Variable* w); 00050 virtual ~SplitVariable(); 00051 virtual void Set(int64 new_value); 00052 virtual int64 SetReturningPreviousValue(int64 new_value); 00053 virtual int64 Get() const; 00054 virtual StringPiece GetName() const; 00055 virtual int64 Add(int delta); 00056 00057 private: 00058 Variable* rw_; 00059 Variable* w_; 00060 DISALLOW_COPY_AND_ASSIGN(SplitVariable); 00061 }; 00062 00065 class SplitHistogram : public Histogram { 00066 public: 00070 SplitHistogram(ThreadSystem* thread_system, Histogram* rw, Histogram* w); 00071 virtual ~SplitHistogram(); 00072 00075 virtual void Add(double value); 00076 virtual void Clear(); 00077 virtual void Render(int index, Writer* writer, MessageHandler* handler); 00078 virtual int NumBuckets(); 00079 virtual void EnableNegativeBuckets(); 00080 virtual void SetMinValue(double value); 00081 virtual void SetMaxValue(double value); 00082 virtual void SetSuggestedNumBuckets(int i); 00083 virtual double BucketStart(int index); 00084 virtual double BucketLimit(int index); 00085 virtual double BucketCount(int index); 00086 00087 protected: 00088 virtual double AverageInternal(); 00089 virtual double PercentileInternal(const double perc); 00090 virtual double StandardDeviationInternal(); 00091 virtual double CountInternal(); 00092 virtual double MaximumInternal(); 00093 virtual double MinimumInternal(); 00094 00095 virtual AbstractMutex* lock(); 00096 00097 private: 00098 scoped_ptr<AbstractMutex> lock_; 00099 Histogram* rw_; 00100 Histogram* w_; 00101 00102 DISALLOW_COPY_AND_ASSIGN(SplitHistogram); 00103 }; 00104 00107 class SplitTimedVariable : public TimedVariable { 00108 public: 00112 SplitTimedVariable(TimedVariable* rw, TimedVariable* w); 00113 virtual ~SplitTimedVariable(); 00114 00115 virtual void IncBy(int64 delta); 00116 virtual int64 Get(int level); 00117 virtual void Clear(); 00118 00119 private: 00120 TimedVariable* rw_; 00121 TimedVariable* w_; 00122 00123 DISALLOW_COPY_AND_ASSIGN(SplitTimedVariable); 00124 }; 00125 00126 class SplitStatistics 00127 : public StatisticsTemplate<SplitVariable, SplitHistogram, 00128 SplitTimedVariable> { 00129 public: 00138 SplitStatistics(ThreadSystem* thread_system, 00139 Statistics* local, 00140 Statistics* global); 00141 00142 virtual ~SplitStatistics(); 00143 00144 virtual StatisticsLogger* console_logger() { 00147 return local_->console_logger(); 00148 } 00149 00150 protected: 00151 virtual SplitVariable* NewVariable(const StringPiece& name, int index); 00152 virtual SplitVariable* NewGlobalVariable(const StringPiece& name, int index); 00153 virtual SplitHistogram* NewHistogram(const StringPiece& name); 00154 virtual SplitTimedVariable* NewTimedVariable(const StringPiece& name, 00155 int index); 00156 00157 private: 00158 ThreadSystem* thread_system_; 00159 scoped_ptr<Statistics> local_; 00160 Statistics* global_; 00161 DISALLOW_COPY_AND_ASSIGN(SplitStatistics); 00162 }; 00163 00164 } 00165 00166 #endif ///< NET_INSTAWEB_UTIL_PUBLIC_SPLIT_STATISTICS_H_