62 строки
1.8 KiB
C
62 строки
1.8 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include "ompi/include/constants.h"
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#include "opal/runtime/opal.h"
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#include "opal/memory/memory.h"
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#define iters 10000
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static void* ptrs[iters];
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int
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main(int argc, char *argv[])
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{
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int i;
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struct timeval start, end;
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long time;
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gettimeofday(&start, NULL);
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for (i = 0 ; i < iters ; ++i) {
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/* malloc out a random size from 1 to 256 bytes */
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ptrs[i] = malloc((rand() & 0xff) + 1);
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}
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gettimeofday(&end, NULL);
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time = ((end.tv_sec - start.tv_sec) * 1000 * 1000) +
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(end.tv_usec - start.tv_usec);
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printf("malloc: %d calls in %ld microseconds. %lf microseconds/call\n",
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iters, time, (double) time / iters);
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gettimeofday(&start, NULL);
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for (i = 0 ; i < iters ; ++i) {
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free(ptrs[i]);
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}
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gettimeofday(&end, NULL);
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time = ((end.tv_sec - start.tv_sec) * 1000 * 1000) +
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(end.tv_usec - start.tv_usec);
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printf("free: %d calls in %ld microseconds. %lf microseconds/call\n",
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iters, time, (double) time / iters);
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return 0;
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}
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