mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-12-27 05:55:02 +03:00
7093d2e2cd
- Add a high resolution timing function to measure the wall-clock time by gettimeofday(). - Now the Timer class use getrusage() to measure the elapsed CPU time as KenLM does. - Revive Timer::restart(). - Add Timer::ToString() for reporting the detail statistics as well as for debugging. - Add a simple unit test for Timer.
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include "Timer.h"
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#include "Util.h"
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#include <cstdio>
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#if !defined(_WIN32) && !defined(_WIN64)
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#include <sys/resource.h>
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#include <sys/time.h>
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#endif
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namespace {
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#if !defined(_WIN32) && !defined(_WIN64)
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uint64_t GetMicroSeconds(const struct timeval& tv) {
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return static_cast<uint64_t>(tv.tv_sec) * 1000000 + tv.tv_usec;
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}
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uint64_t GetTimeOfDayMicroSeconds() {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return static_cast<uint64_t>(tv.tv_sec) * 1000000 + tv.tv_usec;
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}
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#endif
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} // namespace
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Timer::CPUTime Timer::GetCPUTimeMicroSeconds() const {
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#if !defined(_WIN32) && !defined(_WIN64)
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struct rusage usage;
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if (getrusage(RUSAGE_SELF, &usage)) {
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TRACE_ERR("Error occurred: getrusage().\n");
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exit(1);
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}
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CPUTime t;
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t.user_time = GetMicroSeconds(usage.ru_utime);
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t.sys_time = GetMicroSeconds(usage.ru_stime);
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return t;
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#else // Windows
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// Not implemented yet.
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// TODO: implement the Windows version using native APIs.
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CPUTime t;
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return t;
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#endif
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}
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double Timer::get_elapsed_cpu_time() const {
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return static_cast<double>(get_elapsed_cpu_time_microseconds()) * 1e-6;
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}
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uint64_t Timer::get_elapsed_cpu_time_microseconds() const {
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const CPUTime e = GetCPUTimeMicroSeconds();
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return (e.user_time - m_start_time.user_time) +
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(e.sys_time - m_start_time.sys_time);
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}
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double Timer::get_elapsed_wall_time() const {
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return static_cast<double>(get_elapsed_wall_time_microseconds()) * 1e-6;
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}
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uint64_t Timer::get_elapsed_wall_time_microseconds() const {
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return GetTimeOfDayMicroSeconds() - m_wall;
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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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if (m_is_running) return;
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m_is_running = true;
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m_wall = GetTimeOfDayMicroSeconds();
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m_start_time = GetCPUTimeMicroSeconds();
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}
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void Timer::restart(const char* msg)
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{
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if (msg) {
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TRACE_ERR(msg << std::endl);
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}
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m_wall = GetTimeOfDayMicroSeconds();
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m_start_time = GetCPUTimeMicroSeconds();
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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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if (m_is_running) {
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TRACE_ERR("[Wall " << get_elapsed_wall_time()
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<< " CPU " << get_elapsed_cpu_time() << "] seconds.\n");
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} else {
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TRACE_ERR("WARNING: the timer is not running.\n");
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}
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}
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std::string Timer::ToString() const {
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std::string res;
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char tmp[64];
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const double wall = get_elapsed_wall_time();
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const CPUTime e = GetCPUTimeMicroSeconds();
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const double utime = (e.user_time - m_start_time.user_time) * 1e-6;
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const double stime = (e.sys_time - m_start_time.sys_time) * 1e-6;
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std::snprintf(tmp, sizeof(tmp), "wall %f user %f sec. sys %f sec. total %f sec.",
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wall, utime, stime, utime + stime);
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res.append(tmp);
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return res;
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}
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