Page Speed Optimization Libraries
1.3.25.1
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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 ThreadSystem; 00039 class Writer; 00040 00043 class SplitVariable : public Variable { 00044 public: 00048 SplitVariable(Variable* rw, Variable* w); 00049 virtual ~SplitVariable(); 00050 virtual void Set(int64 new_value); 00051 virtual int64 SetReturningPreviousValue(int64 new_value); 00052 virtual int64 Get() const; 00053 virtual StringPiece GetName() const; 00054 virtual int64 Add(int delta); 00055 00056 private: 00057 Variable* rw_; 00058 Variable* w_; 00059 DISALLOW_COPY_AND_ASSIGN(SplitVariable); 00060 }; 00061 00062 class SplitConsoleStatisticsLogger : public ConsoleStatisticsLogger { 00063 public: 00065 SplitConsoleStatisticsLogger(ConsoleStatisticsLogger* a, 00066 ConsoleStatisticsLogger* b); 00067 virtual ~SplitConsoleStatisticsLogger(); 00068 virtual void UpdateAndDumpIfRequired(); 00069 00070 private: 00071 ConsoleStatisticsLogger* a_; 00072 ConsoleStatisticsLogger* b_; 00073 DISALLOW_COPY_AND_ASSIGN(SplitConsoleStatisticsLogger); 00074 }; 00075 00078 class SplitHistogram : public Histogram { 00079 public: 00083 SplitHistogram(ThreadSystem* thread_system, Histogram* rw, Histogram* w); 00084 virtual ~SplitHistogram(); 00085 00088 virtual void Add(double value); 00089 virtual void Clear(); 00090 virtual void Render(int index, Writer* writer, MessageHandler* handler); 00091 virtual int NumBuckets(); 00092 virtual void EnableNegativeBuckets(); 00093 virtual void SetMinValue(double value); 00094 virtual void SetMaxValue(double value); 00095 virtual void SetSuggestedNumBuckets(int i); 00096 virtual double BucketStart(int index); 00097 virtual double BucketLimit(int index); 00098 virtual double BucketCount(int index); 00099 00100 protected: 00101 virtual double AverageInternal(); 00102 virtual double PercentileInternal(const double perc); 00103 virtual double StandardDeviationInternal(); 00104 virtual double CountInternal(); 00105 virtual double MaximumInternal(); 00106 virtual double MinimumInternal(); 00107 00108 virtual AbstractMutex* lock(); 00109 00110 private: 00111 scoped_ptr<AbstractMutex> lock_; 00112 Histogram* rw_; 00113 Histogram* w_; 00114 00115 DISALLOW_COPY_AND_ASSIGN(SplitHistogram); 00116 }; 00117 00120 class SplitTimedVariable : public TimedVariable { 00121 public: 00125 SplitTimedVariable(TimedVariable* rw, TimedVariable* w); 00126 virtual ~SplitTimedVariable(); 00127 00128 virtual void IncBy(int64 delta); 00129 virtual int64 Get(int level); 00130 virtual void Clear(); 00131 00132 private: 00133 TimedVariable* rw_; 00134 TimedVariable* w_; 00135 00136 DISALLOW_COPY_AND_ASSIGN(SplitTimedVariable); 00137 }; 00138 00139 class SplitStatistics 00140 : public StatisticsTemplate<SplitVariable, SplitHistogram, 00141 SplitTimedVariable> { 00142 public: 00151 SplitStatistics(ThreadSystem* thread_system, 00152 Statistics* local, 00153 Statistics* global); 00154 00155 virtual ~SplitStatistics(); 00156 00157 protected: 00158 virtual SplitVariable* NewVariable(const StringPiece& name, int index); 00159 virtual SplitVariable* NewGlobalVariable(const StringPiece& name, int index); 00160 virtual SplitHistogram* NewHistogram(const StringPiece& name); 00161 virtual SplitTimedVariable* NewTimedVariable(const StringPiece& name, 00162 int index); 00164 00165 private: 00166 ThreadSystem* thread_system_; 00167 scoped_ptr<Statistics> local_; 00168 Statistics* global_; 00169 DISALLOW_COPY_AND_ASSIGN(SplitStatistics); 00170 }; 00171 00172 } 00173 00174 #endif ///< NET_INSTAWEB_UTIL_PUBLIC_SPLIT_STATISTICS_H_