mirror of
https://github.com/moses-smt/mosesdecoder.git
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126 lines
3.1 KiB
C++
126 lines
3.1 KiB
C++
#include <ctime>
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#include <iostream>
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#include <iomanip>
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#include "Util.h"
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#include "Timer.h"
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namespace Moses
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{
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/***
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* Return the total time that the timer has been in the "running"
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* state since it was first "started" or last "restarted". For
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* "short" time periods (less than an hour), the actual cpu time
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* used is reported instead of the elapsed time.
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*/
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double Timer::elapsed_time()
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{
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#ifdef CLOCK_MONOTONIC
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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double elapsed = (now.tv_sec - start_time.tv_sec);
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elapsed += (now.tv_nsec - start_time.tv_nsec) / 1000000000.0;
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return elapsed;
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#else
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time_t now;
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time(&now);
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return difftime(now, start_time);
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#endif
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}
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/***
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* Return the total time that the timer has been in the "running"
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* state since it was first "started" or last "restarted". For
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* "short" time periods (less than an hour), the actual cpu time
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* used is reported instead of the elapsed time.
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* This function is the public version of elapsed_time()
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*/
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double Timer::get_elapsed_time()
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{
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return elapsed_time();
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}
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/***
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* Start a timer. If it is already running, let it continue running.
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* Print an optional message.
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*/
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void Timer::start(const char* msg)
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{
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// Print an optional message, something like "Starting timer t";
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if (msg) TRACE_ERR( msg << std::endl);
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// Return immediately if the timer is already running
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if (running) return;
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// Change timer status to running
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running = true;
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// Set the start time;
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#ifdef CLOCK_MONOTONIC
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clock_gettime(CLOCK_MONOTONIC, &start_time);
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#else
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time(&start_time);
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#endif
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}
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/***
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* Turn the timer off and start it again from 0. Print an optional message.
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*/
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/*
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inline void Timer::restart(const char* msg)
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{
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// Print an optional message, something like "Restarting timer t";
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if (msg) TRACE_ERR( msg << std::endl;
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// Set the timer status to running
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running = true;
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// Set the accumulated time to 0 and the start time to now
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acc_time = 0;
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start_clock = clock();
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start_time = time(0);
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}
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*/
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/***
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* Stop the timer and print an optional message.
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*/
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/*
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inline void Timer::stop(const char* msg)
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{
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// Print an optional message, something like "Stopping timer t";
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check(msg);
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// Recalculate and store the total accumulated time up until now
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if (running) acc_time += elapsed_time();
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running = false;
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}
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*/
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/***
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* Print out an optional message followed by the current timer timing.
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*/
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void Timer::check(const char* msg)
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{
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// Print an optional message, something like "Checking timer t";
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if (msg) TRACE_ERR( msg << " : ");
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// TRACE_ERR( "[" << std::setiosflags(std::ios::fixed) << std::setprecision(2) << (running ? elapsed_time() : 0) << "] seconds\n");
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TRACE_ERR( "[" << (running ? elapsed_time() : 0) << "] seconds\n");
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}
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/***
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* Allow timers to be printed to ostreams using the syntax 'os << t'
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* for an ostream 'os' and a timer 't'. For example, "cout << t" will
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* print out the total amount of time 't' has been "running".
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*/
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std::ostream& operator<<(std::ostream& os, Timer& t)
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{
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//os << std::setprecision(2) << std::setiosflags(std::ios::fixed) << (t.running ? t.elapsed_time() : 0);
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os << (t.running ? t.elapsed_time() : 0);
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return os;
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}
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}
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