baidu_measure_time.h

00001 #ifndef __MEASURETIME_H__
00002 #define __MEASURETIME_H__
00003 #include "us_ticker_api.h"
00004 
00005 #define ArraySize 20
00006 
00007 #define print_error printf
00008 
00009 namespace baidu{
00010 namespace os{
00011 
00012 typedef struct __MeasureValue{
00013     unsigned int total_cnt;
00014     unsigned int cur_cnt;
00015     unsigned int time_begin;
00016     unsigned int time_sum;
00017     unsigned int time_min;
00018     unsigned int time_max;
00019     unsigned int arg_value;
00020 }MeasureValue;
00021 
00022 typedef unsigned int (*TimeFuncPtr)(void);
00023 
00024 // this class is not thread-safe
00025 class MeasureTime{
00026 public:
00027     static MeasureTime* getInstMeasureTime(TimeFuncPtr time_func);
00028     void addMeasureValue(int key, int count);
00029     void updateMeasureValue(int key, int arg_value, int continuous_measure_flag);
00030     void outputResult();
00031 
00032 private:
00033     MeasureTime(TimeFuncPtr time_func);
00034     MeasureTime(const MeasureTime&);
00035     MeasureTime& operator=(const MeasureTime&);
00036     
00037 private:
00038     static MeasureTime* _instance;
00039     static TimeFuncPtr _time_func;
00040     MeasureValue MeasureArray[ArraySize];
00041 };
00042 
00043 } //namespace os
00044 } //namespace baidu
00045 #endif //~__MEASURETIME_H__