Distributed-Run-Time-Resource-Manager/RCCE_V2.0/apps/NPB/common/c_timers.c

// 
// Copyright 2010 Intel Corporation
// 
//    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
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
// 
#include "mpi.h"

double start[64], elapsed[64];

/*****************************************************************/
/******            T  I  M  E  R  _  C  L  E  A  R          ******/
/*****************************************************************/
void timer_clear( int n )
{
    elapsed[n] = 0.0;
}


/*****************************************************************/
/******            T  I  M  E  R  _  S  T  A  R  T          ******/
/*****************************************************************/
void timer_start( int n )
{
    start[n] = MPI_Wtime();
}


/*****************************************************************/
/******            T  I  M  E  R  _  S  T  O  P             ******/
/*****************************************************************/
void timer_stop( int n )
{
    double t, now;

    now = MPI_Wtime();
    t = now - start[n];
    elapsed[n] += t;

}


/*****************************************************************/
/******            T  I  M  E  R  _  R  E  A  D             ******/
/*****************************************************************/
double timer_read( int n )
{
    return( elapsed[n] );
}