minix/tests/lib/libc/sys/t_getpid.c

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/* $NetBSD: t_getpid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_getpid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
#include <sys/wait.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <atf-c.h>
static int maxiter = 10;
static void *threadfunc(void *);
static void *
threadfunc(void *arg)
{
*(pid_t *)arg = getpid();
return NULL;
}
ATF_TC(getpid_process);
ATF_TC_HEAD(getpid_process, tc)
{
atf_tc_set_md_var(tc, "descr", "Test getpid(2) with processes");
}
ATF_TC_BODY(getpid_process, tc)
{
pid_t ppid, fpid, cpid, tpid, wpid;
int i, sta;
for (i = 0; i < maxiter; i++) {
tpid = getpid();
fpid = fork();
ATF_REQUIRE(fpid >= 0);
if (fpid == 0) {
cpid = getpid();
ppid = getppid();
if (tpid != ppid)
_exit(EXIT_FAILURE);
if (cpid == ppid)
_exit(EXIT_FAILURE);
if (tpid == fpid)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);
}
wpid = wait(&sta);
if (wpid != fpid)
atf_tc_fail("PID mismatch");
ATF_REQUIRE(WIFEXITED(sta) != 0);
if (WEXITSTATUS(sta) != EXIT_SUCCESS)
atf_tc_fail("PID mismatch");
}
}
ATF_TC(getpid_thread);
ATF_TC_HEAD(getpid_thread, tc)
{
atf_tc_set_md_var(tc, "descr", "Test getpid(2) with threads");
}
ATF_TC_BODY(getpid_thread, tc)
{
pid_t pid, tpid;
pthread_t tid;
int i, rv;
for (i = 0; i < maxiter; i++) {
pid = getpid();
rv = pthread_create(&tid, NULL, threadfunc, &tpid);
ATF_REQUIRE(rv == 0);
rv = pthread_join(tid, NULL);
ATF_REQUIRE(rv == 0);
if (pid != tpid)
atf_tc_fail("Unequal PIDs");
}
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, getpid_process);
ATF_TP_ADD_TC(tp, getpid_thread);
return atf_no_error();
}