1 /* $OpenBSD: pthread_join.c,v 1.5 2018/04/27 06:47:34 guenther Exp $ */
2 /*
3 * Copyright (c) 1993, 1994, 1995, 1996 by Chris Provenzano and contributors,
4 * proven@mit.edu All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Chris Provenzano,
17 * the University of California, Berkeley, and contributors.
18 * 4. Neither the name of Chris Provenzano, the University, nor the names of
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO, THE REGENTS OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 /* ==== test_pthread_join.c =================================================
36 * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
37 *
38 * Description : Test pthread_join(). Run this after test_create()
39 *
40 * 1.23 94/05/04 proven
41 * -Started coding this file.
42 */
43
44 #include <err.h>
45 #include <pthread.h>
46 #include <signal.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <unistd.h>
50 #include "test.h"
51
52 static void
handler(int sig)53 handler(int sig)
54 {
55 }
56
57 /* This thread yields so the creator has a live thread to wait on */
58 static void *
new_thread_1(void * new_buf)59 new_thread_1(void * new_buf)
60 {
61 int i;
62
63 snprintf((char *)new_buf, 512, "New thread %%d stack at %p\n", &i);
64 pthread_yield(); /* (ensure parent can wait on live thread) */
65 sleep(2);
66 return(new_buf);
67 PANIC("return");
68 }
69
70 /* This thread doesn't yield so the creator has a dead thread to wait on */
71 static void *
new_thread_2(void * new_buf)72 new_thread_2(void * new_buf)
73 {
74 int i;
75
76 snprintf((char *)new_buf, 512, "New thread %%d stack at %p\n", &i);
77 return(new_buf);
78 PANIC("return");
79 }
80
81 int
main(int argc,char * argv[])82 main(int argc, char *argv[])
83 {
84 struct sigaction sa;
85 sigset_t mask;
86 char buf[256], *status;
87 pthread_t thread;
88 int debug = 1;
89 int i = 0;
90
91 sa.sa_handler = &handler;
92 sigemptyset(&sa.sa_mask);
93 sa.sa_flags = 0;
94 if (sigaction(SIGALRM, &sa, NULL))
95 err(1, "sigaction");
96 sigemptyset(&mask);
97 sigaddset(&mask, SIGALRM);
98
99 if (debug)
100 printf("Original thread stack at %p\n", &i);
101
102 if (sigprocmask(SIG_BLOCK, &mask, NULL))
103 err(1, "sigprocmask");
104 CHECKr(pthread_create(&thread, NULL, new_thread_1, (void *)buf));
105 if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
106 err(1, "sigprocmask");
107 alarm(1);
108 CHECKr(pthread_join(thread, (void **)(&status)));
109 if (debug)
110 printf(status, ++i);
111
112 /* Now have the created thread finishing before the join. */
113 CHECKr(pthread_create(&thread, NULL, new_thread_2, (void *)buf));
114 pthread_yield();
115 sleep(1); /* (ensure thread is dead) */
116 CHECKr(pthread_join(thread, (void **)(&status)));
117
118 if (debug)
119 printf(status, ++i);
120
121 SUCCEED;
122 }
123
124