tests/netbsd_getenv_thread.c

   1 /*      $NetBSD: t_getenv_thread.c,v 1.2 2012/03/15 02:02:23 joerg Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Matthias Scheler.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_getenv_thread.c,v 1.2 2012/03/15 02:02:23 joerg Exp $");
  33
  34 #include <darwintest.h>
  35
  36 #include <errno.h>
  37 #include <pthread.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <time.h>
  42
  43 #define THREADED_NUM_THREADS    8
  44 #define THREADED_NUM_VARS       16
  45 #define THREADED_VAR_NAME       "THREADED%zu"
  46 #define THREADED_RUN_TIME       10
  47
  48 static void      *thread_putenv(void *);
  49 static void      *thread_setenv(void *);
  50 static void      *thread_unsetenv(void *);
  51
  52 static void *
  53 thread_putenv(void *arg)
  54 {
  55         time_t endtime;
  56         size_t i;
  57         static char vars[THREADED_NUM_VARS][128];
  58
  59         for (i = 0; i < THREADED_NUM_VARS; i++) {
  60                 (void)snprintf(vars[i], sizeof(vars[i]),
  61                     THREADED_VAR_NAME "=putenv %ld", i, lrand48());
  62         }
  63
  64         endtime = *(time_t *)arg;
  65         do {
  66                 char name[128];
  67
  68                 i = lrand48() % THREADED_NUM_VARS;
  69                 (void)strlcpy(name, vars[i], sizeof(name));
  70                 *strchr(name, '=') = '\0';
  71
  72                 T_QUIET; T_ASSERT_POSIX_ZERO(unsetenv(name), NULL);
  73                 T_QUIET; T_ASSERT_POSIX_ZERO(putenv(vars[i]), NULL);
  74         } while (time(NULL) < endtime);
  75
  76         return NULL;
  77 }
  78
  79 static void *
  80 thread_setenv(void *arg)
  81 {
  82         time_t endtime;
  83
  84         endtime = *(time_t *)arg;
  85         do {
  86                 size_t i;
  87                 char name[32], value[64];
  88
  89                 i = lrand48() % THREADED_NUM_VARS;
  90                 (void)snprintf(name, sizeof(name), THREADED_VAR_NAME, i);
  91                 (void)snprintf(value, sizeof(value), "setenv %ld", lrand48());
  92
  93                 T_QUIET; T_ASSERT_POSIX_ZERO(setenv(name, value, 1), NULL);
  94         } while (time(NULL) < endtime);
  95
  96         return NULL;
  97 }
  98
  99 static void *
 100 thread_unsetenv(void *arg)
 101 {
 102         time_t endtime;
 103
 104         endtime = *(time_t *)arg;
 105         do {
 106                 size_t i;
 107                 char name[32];
 108
 109                 i = lrand48() % THREADED_NUM_VARS;
 110                 (void)snprintf(name, sizeof(name), THREADED_VAR_NAME, i);
 111
 112                 T_QUIET; T_ASSERT_POSIX_ZERO(unsetenv(name), NULL);
 113         } while (time(NULL) < endtime);
 114
 115         return NULL;
 116 }
 117
 118 T_DECL(putenv_thread, "Test concurrent access by putenv(3)")
 119 {
 120         pthread_t threads[THREADED_NUM_THREADS];
 121         time_t endtime = time(NULL) + THREADED_RUN_TIME;
 122
 123         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 124                 T_QUIET; T_ASSERT_POSIX_ZERO(
 125                                 pthread_create(&threads[i], NULL, thread_putenv, &endtime),
 126                                 NULL);
 127         }
 128         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 129                 T_QUIET; T_ASSERT_POSIX_ZERO(pthread_join(threads[i], NULL), NULL);
 130         }
 131         T_PASS("putenv_thread() completed successfully");
 132 }
 133
 134 T_DECL(setenv_thread, "Test concurrent access by setenv(3)")
 135 {
 136         pthread_t threads[THREADED_NUM_THREADS];
 137         time_t endtime = time(NULL) + THREADED_RUN_TIME;
 138
 139         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 140                 T_QUIET; T_ASSERT_POSIX_ZERO(
 141                                 pthread_create(&threads[i], NULL, thread_setenv, &endtime),
 142                                 NULL);
 143         }
 144         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 145                 T_QUIET; T_ASSERT_POSIX_ZERO(pthread_join(threads[i], NULL), NULL);
 146         }
 147         T_PASS("setenv_thread() completed successfully");
 148 }
 149
 150 T_DECL(unsetenv_thread, "Test unsetenv(3) with threads")
 151 {
 152         pthread_t threads[THREADED_NUM_THREADS];
 153         time_t endtime = time(NULL) + THREADED_RUN_TIME;
 154
 155         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 156                 T_QUIET; T_ASSERT_POSIX_ZERO(
 157                                 pthread_create(&threads[i], NULL, thread_unsetenv, &endtime),
 158                                 NULL);
 159         }
 160         for (int i = 0; i < THREADED_NUM_THREADS; i++) {
 161                 T_QUIET; T_ASSERT_POSIX_ZERO(pthread_join(threads[i], NULL), NULL);
 162         }
 163         T_PASS("unsetenv_thread() completed successfully");
 164 }
 165