65 строки
1.8 KiB
C
65 строки
1.8 KiB
C
/*
|
|
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2006 Cisco Systems, Inc. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
#include "ompi_config.h"
|
|
|
|
#ifdef HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
|
|
#include MCA_timer_IMPLEMENTATION_HEADER
|
|
#include "opal/prefetch.h"
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/runtime/mpiruntime.h"
|
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Wtime = PMPI_Wtime
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Wtime";
|
|
|
|
|
|
double MPI_Wtime(void)
|
|
{
|
|
double wtime;
|
|
|
|
#if OPAL_TIMER_USEC_NATIVE
|
|
/* We may or may not have native usec precision on Windows, so put
|
|
this #if before the #ifdef checking for Windows. */
|
|
wtime = ((double) opal_timer_base_get_usec()) / 1000000.0;
|
|
#elif defined(__WINDOWS__)
|
|
wtime = ((double) opal_timer_base_get_cycles()) /
|
|
((double) opal_timer_base_get_freq());
|
|
#else
|
|
/* Fall back to gettimeofday() if we have nothing else */
|
|
struct timeval tv;
|
|
gettimeofday(&tv, NULL);
|
|
wtime = tv.tv_sec;
|
|
wtime += (double)tv.tv_usec / 1000000.0;
|
|
#endif
|
|
|
|
OPAL_CR_NOOP_PROGRESS();
|
|
|
|
return wtime;
|
|
}
|