Optimize for kernels which are known to have the vfork syscall.
[glibc/pb-stable.git] / nptl / tst-rwlock3.c
blobc1cac876d63e7894c8a7686b1855b892b4a30779
1 /* Copyright (C) 2002 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 /* This test case checks more than standard compliance. An
21 implementation may provide this service but it is not required to
22 do so. */
24 #include <errno.h>
25 #include <pthread.h>
26 #include <stdio.h>
29 static int
30 do_test (void)
32 pthread_rwlock_t r;
33 int e;
35 if (pthread_rwlock_init (&r, NULL) != 0)
37 puts ("rwlock_init failed");
38 return 1;
40 puts ("rwlock_init succeeded");
42 if (pthread_rwlock_trywrlock (&r) != 0)
44 puts ("rwlock_trywrlock on unlocked rwlock failed");
45 return 1;
47 puts ("rwlock_trywrlock on unlocked rwlock succeeded");
49 e = pthread_rwlock_rdlock (&r);
50 if (e == 0)
52 puts ("rwlock_rdlock on rwlock with writer succeeded");
53 return 1;
55 if (e != EDEADLK)
57 puts ("rwlock_rdlock on rwlock with writer failed != EDEADLK");
58 return 1;
60 puts ("rwlock_rdlock on rwlock with writer failed with EDEADLK");
62 e = pthread_rwlock_wrlock (&r);
63 if (e == 0)
65 puts ("rwlock_wrlock on rwlock with writer succeeded");
66 return 1;
68 if (e != EDEADLK)
70 puts ("rwlock_wrlock on rwlock with writer failed != EDEADLK");
71 return 1;
73 puts ("rwlock_wrlock on rwlock with writer failed with EDEADLK");
75 if (pthread_rwlock_unlock (&r) != 0)
77 puts ("rwlock_unlock failed");
78 return 1;
80 puts ("rwlock_unlock succeeded");
82 if (pthread_rwlock_destroy (&r) != 0)
84 puts ("rwlock_destroy failed");
85 return 1;
87 puts ("rwlock_destroy succeeded");
89 return 0;
92 #define TEST_FUNCTION do_test ()
93 #include "../test-skeleton.c"