minix/tests/lib/libc/stdlib/t_getenv_thread.c

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/* $NetBSD: t_getenv_thread.c,v 1.2 2012/03/15 02:02:23 joerg Exp $ */
/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matthias Scheler.
*
* 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_getenv_thread.c,v 1.2 2012/03/15 02:02:23 joerg Exp $");
#include <atf-c.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define THREADED_NUM_THREADS 8
#define THREADED_NUM_VARS 16
#define THREADED_VAR_NAME "THREADED%zu"
#define THREADED_RUN_TIME 10
static void *thread_getenv_r(void *);
static void *thread_putenv(void *);
static void *thread_setenv(void *);
static void *thread_unsetenv(void *);
static void *
thread_getenv_r(void *arg)
{
time_t endtime;
endtime = *(time_t *)arg;
do {
size_t i;
char name[32], value[128];
i = lrand48() % THREADED_NUM_VARS;
(void)snprintf(name, sizeof(name), THREADED_VAR_NAME, i);
if (getenv_r(name, value, sizeof(value)) == -1) {
ATF_CHECK(errno == ENOENT);
}
} while (time(NULL) < endtime);
return NULL;
}
static void *
thread_putenv(void *arg)
{
time_t endtime;
size_t i;
static char vars[THREADED_NUM_VARS][128];
for (i = 0; i < THREADED_NUM_VARS; i++) {
(void)snprintf(vars[i], sizeof(vars[i]),
THREADED_VAR_NAME "=putenv %ld", i, lrand48());
}
endtime = *(time_t *)arg;
do {
char name[128];
i = lrand48() % THREADED_NUM_VARS;
(void)strlcpy(name, vars[i], sizeof(name));
*strchr(name, '=') = '\0';
ATF_CHECK(unsetenv(name) != -1);
ATF_CHECK(putenv(vars[i]) != -1);
} while (time(NULL) < endtime);
return NULL;
}
static void *
thread_setenv(void *arg)
{
time_t endtime;
endtime = *(time_t *)arg;
do {
size_t i;
char name[32], value[64];
i = lrand48() % THREADED_NUM_VARS;
(void)snprintf(name, sizeof(name), THREADED_VAR_NAME, i);
(void)snprintf(value, sizeof(value), "setenv %ld", lrand48());
ATF_CHECK(setenv(name, value, 1) != -1);
} while (time(NULL) < endtime);
return NULL;
}
static void *
thread_unsetenv(void *arg)
{
time_t endtime;
endtime = *(time_t *)arg;
do {
size_t i;
char name[32];
i = lrand48() % THREADED_NUM_VARS;
(void)snprintf(name, sizeof(name), THREADED_VAR_NAME, i);
ATF_CHECK(unsetenv(name) != -1);
} while (time(NULL) < endtime);
return NULL;
}
ATF_TC(getenv_r_thread);
ATF_TC_HEAD(getenv_r_thread, tc)
{
atf_tc_set_md_var(tc, "descr", "Test getenv_r(3) with threads");
atf_tc_set_md_var(tc, "timeout", "%d", THREADED_RUN_TIME + 5);
}
ATF_TC_BODY(getenv_r_thread, tc)
{
pthread_t threads[THREADED_NUM_THREADS];
time_t endtime;
size_t i, j;
endtime = time(NULL) + THREADED_RUN_TIME;
for (i = j = 0; j < 2; j++) {
ATF_CHECK(pthread_create(&threads[i++], NULL, thread_getenv_r,
&endtime) == 0);
}
for (j = 0; j < i; j++)
ATF_CHECK(pthread_join(threads[j], NULL) == 0);
}
ATF_TC(putenv_thread);
ATF_TC_HEAD(putenv_thread, tc)
{
atf_tc_set_md_var(tc, "descr", "Test concurrent access by putenv(3)");
atf_tc_set_md_var(tc, "timeout", "%d", THREADED_RUN_TIME + 5);
}
ATF_TC_BODY(putenv_thread, tc)
{
pthread_t threads[THREADED_NUM_THREADS];
time_t endtime;
size_t i, j;
endtime = time(NULL) + THREADED_RUN_TIME;
for (i = j = 0; j < 2; j++) {
ATF_CHECK(pthread_create(&threads[i++], NULL, thread_putenv,
&endtime) == 0);
}
for (j = 0; j < i; j++)
ATF_CHECK(pthread_join(threads[j], NULL) == 0);
}
ATF_TC(setenv_thread);
ATF_TC_HEAD(setenv_thread, tc)
{
atf_tc_set_md_var(tc, "descr", "Test concurrent access by setenv(3)");
atf_tc_set_md_var(tc, "timeout", "%d", THREADED_RUN_TIME + 5);
}
ATF_TC_BODY(setenv_thread, tc)
{
pthread_t threads[THREADED_NUM_THREADS];
time_t endtime;
size_t i, j;
endtime = time(NULL) + THREADED_RUN_TIME;
for (i = j = 0; j < 2; j++) {
ATF_CHECK(pthread_create(&threads[i++], NULL, thread_setenv,
&endtime) == 0);
}
for (j = 0; j < i; j++)
ATF_CHECK(pthread_join(threads[j], NULL) == 0);
}
ATF_TC(unsetenv_thread);
ATF_TC_HEAD(unsetenv_thread, tc)
{
atf_tc_set_md_var(tc, "descr", "Test unsetenv(3) with threads");
atf_tc_set_md_var(tc, "timeout", "%d", THREADED_RUN_TIME + 5);
}
ATF_TC_BODY(unsetenv_thread, tc)
{
pthread_t threads[THREADED_NUM_THREADS];
time_t endtime;
size_t i, j;
endtime = time(NULL) + THREADED_RUN_TIME;
for (i = j = 0; j < 2; j++) {
ATF_CHECK(pthread_create(&threads[i++], NULL, thread_unsetenv,
&endtime) == 0);
}
for (j = 0; j < i; j++)
ATF_CHECK(pthread_join(threads[j], NULL) == 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, getenv_r_thread);
ATF_TP_ADD_TC(tp, putenv_thread);
ATF_TP_ADD_TC(tp, setenv_thread);
ATF_TP_ADD_TC(tp, unsetenv_thread);
return atf_no_error();
}