97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* sty.c
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*
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* Run a bunch of cpu pigs.
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*
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* This test should itself run correctly when the basic system calls
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* are complete. It may be helpful for scheduler performance analysis.
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*/
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#include <unistd.h>
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#include <err.h>
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static char *hargv[2] = { (char *)"hog", NULL };
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#define MAXPROCS 6
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static int pids[MAXPROCS], npids;
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static
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void
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hog(void)
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{
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int pid = fork();
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switch (pid) {
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case -1:
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err(1, "fork");
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case 0:
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/* child */
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execv("/testbin/hog", hargv);
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err(1, "/testbin/hog");
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default:
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/* parent */
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pids[npids++] = pid;
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break;
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}
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}
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static
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void
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waitall(void)
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{
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int i, status;
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for (i=0; i<npids; i++) {
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if (waitpid(pids[i], &status, 0)<0) {
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warn("waitpid for %d", pids[i]);
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}
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else if (WIFSIGNALED(status)) {
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warnx("pid %d: signal %d", pids[i], WTERMSIG(status));
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}
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else if (WEXITSTATUS(status) != 0) {
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warnx("pid %d: exit %d", pids[i], WEXITSTATUS(status));
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}
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}
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}
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int
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main(void)
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{
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hog();
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hog();
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hog();
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hog();
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hog();
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hog();
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waitall();
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return 0;
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}
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