1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <pthread.h>
19 #include <signal.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <unistd.h>
23
24
25 static int do_test (void);
26
27 #define TEST_FUNCTION do_test ()
28 #include "../test-skeleton.c"
29
tf(void * a)30 static void *tf (void *a)
31 {
32 puts ("start tf");
33
34 /* Multiple locking, implicitly or explicitly, must be possible. */
35 flockfile (stdout);
36
37 puts ("after first flockfile");
38
39 flockfile (stdout);
40
41 puts ("foo");
42
43 funlockfile (stdout);
44
45 puts ("after first funlockfile");
46
47 funlockfile (stdout);
48
49 puts ("all done");
50
51 return a;
52 }
53
54
55 int
do_test(void)56 do_test (void)
57 {
58 pthread_t th;
59
60 if (pthread_create (&th, NULL, tf, NULL) != 0)
61 {
62 write_message ("create failed\n");
63 _exit (1);
64 }
65
66 void *result;
67 if (pthread_join (th, &result) != 0)
68 {
69 puts ("join failed");
70 exit (1);
71 }
72 else if (result != NULL)
73 {
74 printf ("wrong return value: %p, expected %p\n", result, NULL);
75 exit (1);
76 }
77
78 puts ("join returned succsefully");
79
80 return 0;
81 }
82