1 /* Copyright (C) 2002-2014 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/>. */
26 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
34 if (flock (fd, LOCK_SH | LOCK_NB) != 0)
36 puts ("second flock failed");
40 pthread_mutex_unlock (&lock);
49 char tmp[] = "/tmp/tst-flock1-XXXXXX";
54 puts ("mkstemp failed");
60 write (fd, "foobar xyzzy", 12);
62 if (flock (fd, LOCK_EX | LOCK_NB) != 0)
64 puts ("first flock failed");
68 pthread_mutex_lock (&lock);
71 if (pthread_create (&th, NULL, tf, NULL) != 0)
73 puts ("pthread_create failed");
77 pthread_mutex_lock (&lock);
80 if (pthread_join (th, &result) != 0)
82 puts ("pthread_join failed");
88 return result != NULL;
91 #define TEST_FUNCTION do_test ()
92 #include "../test-skeleton.c"