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// base/timer.h
// Copyright 2009-2011 Ondrej Glembek; Microsoft Corporation
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#ifndef KALDI_BASE_TIMER_H_
#define KALDI_BASE_TIMER_H_
#include "base/kaldi-utils.h"
// Note: Sleep(float secs) is included in base/kaldi-utils.h.
#if defined(_MSC_VER) || defined(MINGW)
namespace kaldi
{
class Timer {
public:
Timer() { Reset(); }
void Reset() {
QueryPerformanceCounter(&time_start_);
}
double Elapsed() {
LARGE_INTEGER time_end;
LARGE_INTEGER freq;
QueryPerformanceCounter(&time_end);
if (QueryPerformanceFrequency(&freq) == 0) return 0.0; // Hardware does not support this.
return ((double)time_end.QuadPart - (double)time_start_.QuadPart) /
((double)freq.QuadPart);
}
private:
LARGE_INTEGER time_start_;
};
}
#else
# include <sys/time.h>
# include <unistd.h>
namespace kaldi
{
class Timer
{
public:
Timer() { Reset(); }
void Reset() { gettimeofday(&this->time_start_, &time_zone_); }
/// Returns time in seconds.
double Elapsed() {
struct timeval time_end;
gettimeofday(&time_end, &time_zone_);
double t1, t2;
t1 = (double)time_start_.tv_sec +
(double)time_start_.tv_usec/(1000*1000);
t2 = (double)time_end.tv_sec + (double)time_end.tv_usec/(1000*1000);
return t2-t1;
}
private:
struct timeval time_start_;
struct timezone time_zone_;
};
}
#endif
#endif
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