1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/* $OpenBSD: getaddrinfo.c,v 1.3 2003/01/18 01:48:21 marc Exp $ */
/*
* Copyright (c) 2002 Todd T. Fries <todd@OpenBSD.org>
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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 <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <pthread.h>
#include <netdb.h>
#include <resolv.h>
#include "test.h"
#define STACK_SIZE (2 * 1024 * 1024)
void *func(void *);
int
main(argc, argv)
int argc;
char **argv;
{
pthread_attr_t attr;
pthread_t threads[2];
int i;
CHECKr(pthread_attr_init(&attr));
CHECKr(pthread_attr_setstacksize(&attr, (size_t) STACK_SIZE));
for (i = 0; i < 2; i++) {
CHECKr(pthread_create(&threads[i], &attr, func, NULL));
}
pthread_yield();
for (i = 0; i < 2; i++) {
CHECKr(pthread_join(threads[i], NULL));
}
SUCCEED;
}
void *
func(arg)
void *arg;
{
struct addrinfo hints, *res;
char h[NI_MAXHOST];
int i;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_CANONNAME;
printf("Starting thread %p\n", pthread_self());
for(i = 0; i < 50; i++) {
if (getaddrinfo("www.openbsd.org", "0", &hints, &res))
printf("error on thread %p\n", pthread_self());
else {
getnameinfo(res->ai_addr, res->ai_addrlen, h, sizeof h,
NULL, 0, NI_NUMERICHOST);
printf("success on thread %p: %s is %s\n",
pthread_self(), res->ai_canonname, h);
freeaddrinfo(res);
}
}
return (NULL);
}
|
