Page Speed Optimization Libraries
1.5.27.2
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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 00064 class SplitHistogram : public Histogram { 00065 public: 00069 SplitHistogram(ThreadSystem* thread_system, Histogram* rw, Histogram* w); 00070 virtual ~SplitHistogram(); 00071 00074 virtual void Add(double value); 00075 virtual void Clear(); 00076 virtual void Render(int index, Writer* writer, MessageHandler* handler); 00077 virtual int NumBuckets(); 00078 virtual void EnableNegativeBuckets(); 00079 virtual void SetMinValue(double value); 00080 virtual void SetMaxValue(double value); 00081 virtual void SetSuggestedNumBuckets(int i); 00082 virtual double BucketStart(int index); 00083 virtual double BucketLimit(int index); 00084 virtual double BucketCount(int index); 00085 00086 protected: 00087 virtual double AverageInternal(); 00088 virtual double PercentileInternal(const double perc); 00089 virtual double StandardDeviationInternal(); 00090 virtual double CountInternal(); 00091 virtual double MaximumInternal(); 00092 virtual double MinimumInternal(); 00093 00094 virtual AbstractMutex* lock(); 00095 00096 private: 00097 scoped_ptr<AbstractMutex> lock_; 00098 Histogram* rw_; 00099 Histogram* w_; 00100 00101 DISALLOW_COPY_AND_ASSIGN(SplitHistogram); 00102 }; 00103 00106 class SplitTimedVariable : public TimedVariable { 00107 public: 00111 SplitTimedVariable(TimedVariable* rw, TimedVariable* w); 00112 virtual ~SplitTimedVariable(); 00113 00114 virtual void IncBy(int64 delta); 00115 virtual int64 Get(int level); 00116 virtual void Clear(); 00117 00118 private: 00119 TimedVariable* rw_; 00120 TimedVariable* w_; 00121 00122 DISALLOW_COPY_AND_ASSIGN(SplitTimedVariable); 00123 }; 00124 00125 class SplitStatistics 00126 : public StatisticsTemplate<SplitVariable, SplitHistogram, 00127 SplitTimedVariable> { 00128 public: 00137 SplitStatistics(ThreadSystem* thread_system, 00138 Statistics* local, 00139 Statistics* global); 00140 00141 virtual ~SplitStatistics(); 00142 00143 virtual ConsoleStatisticsLogger* console_logger() { 00146 return local_->console_logger(); 00147 } 00148 00149 protected: 00150 virtual SplitVariable* NewVariable(const StringPiece& name, int index); 00151 virtual SplitVariable* NewGlobalVariable(const StringPiece& name, int index); 00152 virtual SplitHistogram* NewHistogram(const StringPiece& name); 00153 virtual SplitTimedVariable* NewTimedVariable(const StringPiece& name, 00154 int index); 00155 00156 private: 00157 ThreadSystem* thread_system_; 00158 scoped_ptr<Statistics> local_; 00159 Statistics* global_; 00160 DISALLOW_COPY_AND_ASSIGN(SplitStatistics); 00161 }; 00162 00163 } 00164 00165 #endif ///< NET_INSTAWEB_UTIL_PUBLIC_SPLIT_STATISTICS_H_