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