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    /*  | 
    
    
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    Copyright (c) 2010-2013 Tommaso Urli  | 
    
    
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    Tommaso Urli    tommaso.urli@uniud.it   University of Udine  | 
    
    
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    Permission is hereby granted, free of charge, to any person obtaining  | 
    
    
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    a copy of this software and associated documentation files (the  | 
    
    
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    "Software"), to deal in the Software without restriction, including  | 
    
    
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    without limitation the rights to use, copy, modify, merge, publish,  | 
    
    
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    distribute, sublicense, and/or sell copies of the Software, and to  | 
    
    
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    permit persons to whom the Software is furnished to do so, subject to  | 
    
    
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    the following conditions:  | 
    
    
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    The above copyright notice and this permission notice shall be  | 
    
    
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    included in all copies or substantial portions of the Software.  | 
    
    
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    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,  | 
    
    
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    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF  | 
    
    
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    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND  | 
    
    
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    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE  | 
    
    
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    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION  | 
    
    
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    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION  | 
    
    
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    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  | 
    
    
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    */  | 
    
    
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    #include "tsid/utils/Stdafx.hh"  | 
    
    
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    #ifndef WIN32  | 
    
    
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    #include <sys/time.h>  | 
    
    
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    #else  | 
    
    
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    #include <Windows.h>  | 
    
    
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    #include <iomanip>  | 
    
    
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    #endif  | 
    
    
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    #include <iomanip>  // std::setprecision  | 
    
    
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    #include "tsid/utils/stop-watch.hpp"  | 
    
    
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    using std::map;  | 
    
    
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    using std::ostringstream;  | 
    
    
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    using std::string;  | 
    
    
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    Stopwatch& getProfiler() { | 
    
    
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      static Stopwatch s(REAL_TIME);  // alternatives are CPU_TIME and REAL_TIME  | 
    
    
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      return s;  | 
    
    
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    }  | 
    
    
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    Stopwatch::Stopwatch(StopwatchMode _mode) : active(true), mode(_mode) { | 
    
    
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      records_of = new map<string, PerformanceData>();  | 
    
    
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    }  | 
    
    
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    Stopwatch::~Stopwatch() { delete records_of; } | 
    
    
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    void Stopwatch::set_mode(StopwatchMode new_mode) { mode = new_mode; } | 
    
    
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    bool Stopwatch::performance_exists(string perf_name) { | 
    
    
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      return (records_of->find(perf_name) != records_of->end());  | 
    
    
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    }  | 
    
    
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    long double Stopwatch::take_time() { | 
    
    
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      if (mode == CPU_TIME) { | 
    
    
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        // Use ctime  | 
    
    
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        return clock();  | 
    
    
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      } else if (mode == REAL_TIME) { | 
    
    
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        // Query operating system  | 
    
    
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    #ifdef WIN32  | 
    
    
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        /*	In case of usage under Windows */  | 
    
    
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        FILETIME ft;  | 
    
    
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        LARGE_INTEGER intervals;  | 
    
    
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        // Get the amount of 100 nanoseconds intervals elapsed since January 1, 1601  | 
    
    
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        // (UTC)  | 
    
    
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        GetSystemTimeAsFileTime(&ft);  | 
    
    
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        intervals.LowPart = ft.dwLowDateTime;  | 
    
    
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        intervals.HighPart = ft.dwHighDateTime;  | 
    
    
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        long double measure = intervals.QuadPart;  | 
    
    
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        measure -= 116444736000000000.0;  // Convert to UNIX epoch time  | 
    
    
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        measure /= 10000000.0;            // Convert to seconds  | 
    
    
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        return measure;  | 
    
    
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    #else  | 
    
    
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        /* Linux, MacOS, ... */  | 
    
    
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        struct timeval tv;  | 
    
    
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        gettimeofday(&tv, NULL);  | 
    
    
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        long double measure = tv.tv_usec;  | 
    
    
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        measure /= 1000000.0;  // Convert to seconds  | 
    
    
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        measure += tv.tv_sec;  // Add seconds part  | 
    
    
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        return measure;  | 
    
    
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    #endif  | 
    
    
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      } else { | 
    
    
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        // If mode == NONE, clock has not been initialized, then throw exception  | 
    
    
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        throw StopwatchException("Clock not initialized to a time taking mode!"); | 
    
    
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      }  | 
    
    
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    }  | 
    
    
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    void Stopwatch::start(string perf_name) { | 
    
    
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      if (!active) return;  | 
    
    
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      // Just works if not already present  | 
    
    
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      records_of->insert(make_pair(perf_name, PerformanceData()));  | 
    
    
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
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      // Take ctime  | 
    
    
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      perf_info.clock_start = take_time();  | 
    
    
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      // If this is a new start (i.e. not a restart)  | 
    
    
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      //  if (!perf_info.paused)  | 
    
    
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      //    perf_info.last_time = 0;  | 
    
    
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      perf_info.paused = false;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::stop(string perf_name) { | 
    
    
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      if (!active) return;  | 
    
    
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      long double clock_end = take_time();  | 
    
    
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      // Try to recover performance data  | 
    
    
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      if (!performance_exists(perf_name))  | 
    
    
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        throw StopwatchException("Performance not initialized."); | 
    
    
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
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      // check whether the performance has been reset  | 
    
    
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      if (perf_info.clock_start == 0) return;  | 
    
    
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      perf_info.stops++;  | 
    
    
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      long double lapse = clock_end - perf_info.clock_start;  | 
    
    
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      if (mode == CPU_TIME) lapse /= (double)CLOCKS_PER_SEC;  | 
    
    
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      // Update last time  | 
    
    
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      perf_info.last_time = lapse;  | 
    
    
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      // Update min/max time  | 
    
    
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      if (lapse >= perf_info.max_time) perf_info.max_time = lapse;  | 
    
    
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      if (lapse <= perf_info.min_time || perf_info.min_time == 0)  | 
    
    
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        perf_info.min_time = lapse;  | 
    
    
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      // Update total time  | 
    
    
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      perf_info.total_time += lapse;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::pause(string perf_name) { | 
    
    
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      if (!active) return;  | 
    
    
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      long double clock_end = clock();  | 
    
    
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      // Try to recover performance data  | 
    
    
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      if (!performance_exists(perf_name))  | 
    
    
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        throw StopwatchException("Performance not initialized."); | 
    
    
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
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      // check whether the performance has been reset  | 
    
    
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      if (perf_info.clock_start == 0) return;  | 
    
    
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      long double lapse = clock_end - perf_info.clock_start;  | 
    
    
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      // Update total time  | 
    
    
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      perf_info.last_time += lapse;  | 
    
    
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      perf_info.total_time += lapse;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::reset_all() { | 
    
    
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      if (!active) return;  | 
    
    
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      map<string, PerformanceData>::iterator it;  | 
    
    
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      for (it = records_of->begin(); it != records_of->end(); ++it) { | 
    
    
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        reset(it->first);  | 
    
    
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      }  | 
    
    
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    }  | 
    
    
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    void Stopwatch::report_all(int precision, std::ostream& output) { | 
    
    
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      if (!active) return;  | 
    
    
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      output << "\n"  | 
    
    
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             << std::setw(STOP_WATCH_MAX_NAME_LENGTH) << std::left  | 
    
    
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             << "*** PROFILING RESULTS [ms] ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "min"  | 
    
    
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             << " ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "avg"  | 
    
    
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             << " ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "max"  | 
    
    
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             << " ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "lastTime"  | 
    
    
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             << " ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "nSamples"  | 
    
    
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             << " ";  | 
    
    
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      output << std::setw(STOP_WATCH_TIME_WIDTH) << "totalTime"  | 
    
    
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             << " ***\n";  | 
    
    
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      map<string, PerformanceData>::iterator it;  | 
    
    
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      for (it = records_of->begin(); it != records_of->end(); ++it) { | 
    
    
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        if (it->second.stops > 0) report(it->first, precision, output);  | 
    
    
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      }  | 
    
    
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    }  | 
    
    
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    void Stopwatch::reset(string perf_name) { | 
    
    
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      if (!active) return;  | 
    
    
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      // Try to recover performance data  | 
    
    
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      if (!performance_exists(perf_name))  | 
    
    
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        throw StopwatchException("Performance not initialized."); | 
    
    
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
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      perf_info.clock_start = 0;  | 
    
    
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      perf_info.total_time = 0;  | 
    
    
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      perf_info.min_time = 0;  | 
    
    
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      perf_info.max_time = 0;  | 
    
    
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      perf_info.last_time = 0;  | 
    
    
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      perf_info.paused = false;  | 
    
    
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      perf_info.stops = 0;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::turn_on() { | 
    
    
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      std::cout << "Stopwatch active." << std::endl;  | 
    
    
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      active = true;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::turn_off() { | 
    
    
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      std::cout << "Stopwatch inactive." << std::endl;  | 
    
    
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      active = false;  | 
    
    
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    }  | 
    
    
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    void Stopwatch::report(string perf_name, int precision, std::ostream& output) { | 
    
    
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      if (!active) return;  | 
    
    
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      // Try to recover performance data  | 
    
    
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      if (!performance_exists(perf_name))  | 
    
    
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        throw StopwatchException("Performance not initialized."); | 
    
    
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
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      output << std::setw(STOP_WATCH_MAX_NAME_LENGTH) << std::left << perf_name;  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH) << (perf_info.min_time * 1e3)  | 
    
    
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             << " ";  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH)  | 
    
    
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             << (perf_info.total_time * 1e3 / (long double)perf_info.stops) << " ";  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH) << (perf_info.max_time * 1e3)  | 
    
    
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             << " ";  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH) << (perf_info.last_time * 1e3)  | 
    
    
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             << " ";  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH) << perf_info.stops << " ";  | 
    
    
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      output << std::fixed << std::setprecision(precision)  | 
    
    
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             << std::setw(STOP_WATCH_TIME_WIDTH) << perf_info.total_time * 1e3  | 
    
    
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             << std::endl;  | 
    
    
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    }  | 
    
    
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    long double Stopwatch::get_time_so_far(string perf_name) { | 
    
    
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      // Try to recover performance data  | 
    
    
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      if (!performance_exists(perf_name))  | 
    
    
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        throw StopwatchException("Performance not initialized."); | 
    
    
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    268  | 
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      long double lapse =  | 
    
    
    269  | 
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          (take_time() - (records_of->find(perf_name)->second).clock_start);  | 
    
    
    270  | 
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    271  | 
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      if (mode == CPU_TIME) lapse /= (double)CLOCKS_PER_SEC;  | 
    
    
    272  | 
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    273  | 
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      return lapse;  | 
    
    
    274  | 
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    }  | 
    
    
    275  | 
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    276  | 
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    long double Stopwatch::get_total_time(string perf_name) { | 
    
    
    277  | 
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      // Try to recover performance data  | 
    
    
    278  | 
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      if (!performance_exists(perf_name))  | 
    
    
    279  | 
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        throw StopwatchException("Performance not initialized."); | 
    
    
    280  | 
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     | 
    
    
    281  | 
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      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
    282  | 
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    283  | 
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      return perf_info.total_time;  | 
    
    
    284  | 
     | 
     | 
    }  | 
    
    
    285  | 
     | 
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     | 
    
    
    286  | 
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     | 
    long double Stopwatch::get_average_time(string perf_name) { | 
    
    
    287  | 
     | 
     | 
      // Try to recover performance data  | 
    
    
    288  | 
     | 
     | 
      if (!performance_exists(perf_name))  | 
    
    
    289  | 
     | 
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        throw StopwatchException("Performance not initialized."); | 
    
    
    290  | 
     | 
     | 
     | 
    
    
    291  | 
     | 
     | 
      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
    292  | 
     | 
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     | 
    
    
    293  | 
     | 
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      return (perf_info.total_time / (long double)perf_info.stops);  | 
    
    
    294  | 
     | 
     | 
    }  | 
    
    
    295  | 
     | 
     | 
     | 
    
    
    296  | 
     | 
     | 
    long double Stopwatch::get_min_time(string perf_name) { | 
    
    
    297  | 
     | 
     | 
      // Try to recover performance data  | 
    
    
    298  | 
     | 
     | 
      if (!performance_exists(perf_name))  | 
    
    
    299  | 
     | 
     | 
        throw StopwatchException("Performance not initialized."); | 
    
    
    300  | 
     | 
     | 
     | 
    
    
    301  | 
     | 
     | 
      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
    302  | 
     | 
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     | 
    
    
    303  | 
     | 
     | 
      return perf_info.min_time;  | 
    
    
    304  | 
     | 
     | 
    }  | 
    
    
    305  | 
     | 
     | 
     | 
    
    
    306  | 
     | 
     | 
    long double Stopwatch::get_max_time(string perf_name) { | 
    
    
    307  | 
     | 
     | 
      // Try to recover performance data  | 
    
    
    308  | 
     | 
     | 
      if (!performance_exists(perf_name))  | 
    
    
    309  | 
     | 
     | 
        throw StopwatchException("Performance not initialized."); | 
    
    
    310  | 
     | 
     | 
     | 
    
    
    311  | 
     | 
     | 
      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
    312  | 
     | 
     | 
     | 
    
    
    313  | 
     | 
     | 
      return perf_info.max_time;  | 
    
    
    314  | 
     | 
     | 
    }  | 
    
    
    315  | 
     | 
     | 
     | 
    
    
    316  | 
     | 
     | 
    long double Stopwatch::get_last_time(string perf_name) { | 
    
    
    317  | 
     | 
     | 
      // Try to recover performance data  | 
    
    
    318  | 
     | 
     | 
      if (!performance_exists(perf_name))  | 
    
    
    319  | 
     | 
     | 
        throw StopwatchException("Performance not initialized."); | 
    
    
    320  | 
     | 
     | 
     | 
    
    
    321  | 
     | 
     | 
      PerformanceData& perf_info = records_of->find(perf_name)->second;  | 
    
    
    322  | 
     | 
     | 
     | 
    
    
    323  | 
     | 
     | 
      return perf_info.last_time;  | 
    
    
    324  | 
     | 
     | 
    }  |