manual: complete example in error message documentation
[glibc.git] / nptl / tst-mutex1.c
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1 /* Copyright (C) 2002-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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/>. */
19 #include <pthread.h>
20 #include <stdio.h>
21 #include <errno.h>
22 #include <stdbool.h>
25 #ifndef ATTR
26 # define ATTR NULL
27 # define ATTR_NULL true
28 #endif
31 static int
32 do_test (void)
34 pthread_mutex_t m;
36 int e = pthread_mutex_init (&m, ATTR);
37 if (!ATTR_NULL && e == ENOTSUP)
39 puts ("cannot support selected type of mutexes");
40 return 0;
42 else if (e != 0)
44 puts ("mutex_init failed");
45 return 1;
48 if (!ATTR_NULL && pthread_mutexattr_destroy (ATTR) != 0)
50 puts ("mutexattr_destroy failed");
51 return 1;
54 if (pthread_mutex_lock (&m) != 0)
56 puts ("mutex_lock failed");
57 return 1;
60 if (pthread_mutex_unlock (&m) != 0)
62 puts ("mutex_unlock failed");
63 return 1;
66 if (pthread_mutex_destroy (&m) != 0)
68 puts ("mutex_destroy failed");
69 return 1;
72 return 0;
75 #ifndef TEST_FUNCTION
76 # define TEST_FUNCTION do_test ()
77 #endif
78 #include "../test-skeleton.c"