thread.c
/*
* Copyright (c) 2002, 2017 Jens Keiner, Stefan Kunis, Daniel Potts
*
* This program 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.
*
* This program 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
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "infft.h"
#ifdef _OPENMP
#include <omp.h>
#endif
INT Y(get_num_threads)(void)
{
#ifdef _OPENMP
INT nthreads;
#pragma omp parallel default(shared)
{
INT n = (INT)omp_get_num_threads();
#pragma omp master
{
nthreads = n;
}
}
return nthreads;
#else
return 1;
#endif
}
void Y(set_num_threads)(INT nthreads)
{
#ifdef _OPENMP
/* Already created plans may still use old number of threads for FFT step! */
omp_set_num_threads(nthreads);
#endif
}
INT Y(has_threads_enabled)(void)
{
#ifdef _OPENMP
return 1;
#else
return 0;
#endif
}
infft.h
Internal header file for auxiliary definitions and functions.