Warning: That file was not part of the compilation database. It may have many parsing errors.

1/* Multi-threaded test for resolver initialization.
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <netdb.h>
20#include <resolv.h>
21#include <stdlib.h>
22#include <support/check.h>
23#include <support/support.h>
24#include <support/xthread.h>
25
26/* Whether name lookups succeed does not really matter. We use this
27 to trigger initialization of the resolver. */
28static const char *test_hostname = "www.gnu.org";
29
30/* The different initialization methods. */
31enum test_type { init, byname, gai };
32enum { type_count = 3 };
33
34/* Thread function. Perform a few resolver options. */
35static void *
36thread_func (void *closure)
37{
38 enum test_type *ptype = closure;
39 /* Perform a few calls to the requested operation. */
40 TEST_VERIFY (*ptype >= 0);
41 TEST_VERIFY (*ptype < (int) type_count);
42 for (int i = 0; i < 3; ++i)
43 switch (*ptype)
44 {
45 case init:
46 res_init ();
47 break;
48 case byname:
49 gethostbyname (test_hostname);
50 break;
51 case gai:
52 {
53 struct addrinfo hints = { 0, };
54 struct addrinfo *ai = NULL;
55 if (getaddrinfo (test_hostname, "80", &hints, &ai) == 0)
56 freeaddrinfo (ai);
57 }
58 break;
59 }
60 free (ptype);
61 return NULL;
62}
63
64static int
65do_test (void)
66{
67 /* Start a small number of threads which perform resolver
68 operations. */
69 enum { thread_count = 30 };
70
71 pthread_t threads[thread_count];
72 for (int i = 0; i < thread_count; ++i)
73 {
74 enum test_type *ptype = xmalloc (sizeof (*ptype));
75 *ptype = i % type_count;
76 threads[i] = xpthread_create (NULL, thread_func, ptype);
77 }
78 for (int i = 0; i < type_count; ++i)
79 {
80 enum test_type *ptype = xmalloc (sizeof (*ptype));
81 *ptype = i;
82 thread_func (ptype);
83 }
84 for (int i = 0; i < thread_count; ++i)
85 xpthread_join (threads[i]);
86 return 0;
87}
88
89#include <support/test-driver.c>
90

Warning: That file was not part of the compilation database. It may have many parsing errors.