1 /* $OpenBSD: getaddrinfo.c,v 1.3 2003/01/18 01:48:21 marc Exp $ */
2 /*
3 * Copyright (c) 2002 Todd T. Fries <todd@OpenBSD.org>
4 * 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. The name of the author may not be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
15 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
16 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
17 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include <unistd.h>
27 #include <sys/types.h>
28 #include <sys/socket.h>
29 #include <netinet/in.h>
30 #include <pthread.h>
31 #include <netdb.h>
32 #include <resolv.h>
33
34 #include "test.h"
35
36 #define STACK_SIZE (2 * 1024 * 1024)
37
38 void *func(void *);
39
40 int
main(argc,argv)41 main(argc, argv)
42 int argc;
43 char **argv;
44 {
45 pthread_attr_t attr;
46 pthread_t threads[2];
47 int i;
48
49 CHECKr(pthread_attr_init(&attr));
50 CHECKr(pthread_attr_setstacksize(&attr, (size_t) STACK_SIZE));
51 for (i = 0; i < 2; i++) {
52 CHECKr(pthread_create(&threads[i], &attr, func, NULL));
53 }
54
55 pthread_yield();
56 for (i = 0; i < 2; i++) {
57 CHECKr(pthread_join(threads[i], NULL));
58 }
59
60 SUCCEED;
61 }
62
63 void *
func(arg)64 func(arg)
65 void *arg;
66 {
67 struct addrinfo hints, *res;
68 char h[NI_MAXHOST];
69 int i;
70
71 memset(&hints, 0, sizeof(hints));
72 hints.ai_family = PF_UNSPEC;
73 hints.ai_socktype = SOCK_DGRAM;
74 hints.ai_flags = AI_CANONNAME;
75
76 printf("Starting thread %p\n", pthread_self());
77
78 for(i = 0; i < 50; i++) {
79 if (getaddrinfo("www.openbsd.org", "0", &hints, &res))
80 printf("error on thread %p\n", pthread_self());
81 else {
82 getnameinfo(res->ai_addr, res->ai_addrlen, h, sizeof h,
83 NULL, 0, NI_NUMERICHOST);
84 printf("success on thread %p: %s is %s\n",
85 pthread_self(), res->ai_canonname, h);
86 freeaddrinfo(res);
87 }
88 }
89 return (NULL);
90 }
91
92