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/* $OpenBSD: pipe.c,v 1.2 2019/11/10 09:34:40 anton Exp $ */
/*
* Copyright (c) 2019 Anton Lindqvist <anton@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/wait.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pipe.h"
static void sighandler(int);
static __dead void usage(void);
sig_atomic_t gotsigpipe = 0;
int verbose = 0;
int
main(int argc, char *argv[])
{
struct {
const char *t_name;
int (*t_fn)(void);
} tests[] = {
{ "ping-pong", test_ping_pong },
{ "run-down-write-big", test_run_down_write_big },
{ "run-down-write-small", test_run_down_write_small },
{ "thundering-herd-read-signal", test_thundering_herd_read_signal },
{ "thundering-herd-read-wakeup", test_thundering_herd_read_wakeup },
{ "thundering-herd-write-signal", test_thundering_herd_write_signal },
{ "thundering-herd-write-wakeup", test_thundering_herd_write_wakeup },
{ NULL, NULL },
};
int ch, i;
while ((ch = getopt(argc, argv, "v")) != -1) {
switch (ch) {
case 'v':
verbose = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
if (signal(SIGPIPE, sighandler) == SIG_ERR)
err(1, "signal");
for (i = 0; tests[i].t_name != NULL; i++) {
if (strcmp(argv[0], tests[i].t_name))
continue;
return tests[i].t_fn();
}
warnx("%s: no such test", argv[0]);
return 1;
}
int
xwaitpid(pid_t pid)
{
int status;
if (waitpid(pid, &status, 0) == -1)
err(1, "waitpid");
if (WIFEXITED(status))
return WEXITSTATUS(status);
if (WIFSIGNALED(status))
return WTERMSIG(status);
return 0;
}
static void
sighandler(int signo)
{
gotsigpipe = signo;
}
static __dead void
usage(void)
{
fprintf(stderr, "usage: pipe test-case\n");
exit(1);
}
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