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/*
* This file is part of libc_utils.
*
* libc_utils is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* libc_utils is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libc_utils; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* libc_utils is being developed at the Max-Planck-Institut fuer Astrophysik */
/*
* Functionality for reading wall clock time
*
* Copyright (C) 2010-2019 Max-Planck-Society
* Author: Martin Reinecke
*/
#if defined (_OPENMP)
#include <omp.h>
#elif defined (USE_MPI)
#include "mpi.h"
#elif defined (_WIN32)
#include <Windows.h>
#else
#include <sys/time.h>
#include <stdlib.h>
#endif
#include "c_utils/walltime_c.h"
double wallTime(void)
{
#if defined (_OPENMP)
return omp_get_wtime();
#elif defined (USE_MPI)
return MPI_Wtime();
#elif defined (_WIN32)
static double inv_freq = -1.;
if (inv_freq<0)
{
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
inv_freq = 1. / double(freq.QuadPart);
}
LARGE_INTEGER count;
QueryPerformanceCounter(&count);
return count.QuadPart*inv_freq;
#else
struct timeval t;
gettimeofday(&t, NULL);
return t.tv_sec + 1e-6*t.tv_usec;
#endif
}
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