67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*******************************************************************************
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* The BYTE UNIX Benchmarks - Release 3
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* Module: pipe.c SID: 3.3 5/15/91 19:30:20
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*
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*******************************************************************************
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* Bug reports, patches, comments, suggestions should be sent to:
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*
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* Ben Smith, Rick Grehan or Tom Yager
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* ben@bytepb.byte.com rick_g@bytepb.byte.com tyager@bytepb.byte.com
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*
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*******************************************************************************
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* Modification Log:
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* $Header: pipe.c,v 3.5 87/06/22 14:32:36 kjmcdonell Beta $
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* August 29, 1990 - modified timing routines (ty)
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* October 22, 1997 - code cleanup to remove ANSI C compiler warnings
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* Andy Kahn <kahn@zk3.dec.com>
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*
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******************************************************************************/
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char SCCSid[] = "@(#) @(#)pipe.c:3.3 -- 5/15/91 19:30:20";
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/*
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* pipe -- test single process pipe throughput (no context switching)
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "timeit.c"
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unsigned long iter;
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void report(int sig)
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{
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fprintf(stderr,"COUNT|%ld|1|lps\n", iter);
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exit(0);
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}
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int main(int argc, char *argv[])
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{
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char buf[512];
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int pvec[2], duration;
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if (argc != 2) {
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fprintf(stderr,"Usage: %s duration\n", argv[0]);
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exit(1);
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}
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duration = atoi(argv[1]);
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pipe(pvec);
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wake_me(duration, report);
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iter = 0;
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while (1) {
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if (write(pvec[1], buf, sizeof(buf)) != sizeof(buf)) {
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if ((errno != EINTR) && (errno != 0))
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fprintf(stderr,"write failed, error %d\n", errno);
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}
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if (read(pvec[0], buf, sizeof(buf)) != sizeof(buf)) {
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if ((errno != EINTR) && (errno != 0))
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fprintf(stderr,"read failed, error %d\n", errno);
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}
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iter++;
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}
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}
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