1 /* Test sem_wait cancellation for contended case.
2 Copyright (C) 2003-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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 <https://www.gnu.org/licenses/>. */
21 #include <semaphore.h>
28 static pthread_barrier_t bar
;
39 puts ("second call to cleanup");
48 pthread_cleanup_push (cleanup
, NULL
);
50 int e
= pthread_barrier_wait (&bar
);
51 if (e
!= 0 && e
!= PTHREAD_BARRIER_SERIAL_THREAD
)
53 puts ("error: tf: 1st barrier_wait failed");
57 /* This call should block and be cancelable. */
60 pthread_cleanup_pop (0);
71 if (pthread_barrier_init (&bar
, NULL
, 2) != 0)
73 puts ("error: barrier_init failed");
77 /* A value equal to 0 will check for contended pthread cancellation,
78 where the sem_wait operation will block. */
79 if (sem_init (&sem
, 0, 0) != 0)
81 puts ("error: sem_init failed");
85 if (pthread_create (&th
, NULL
, tf
, NULL
) != 0)
87 puts ("error: create failed");
91 int e
= pthread_barrier_wait (&bar
);
92 if (e
!= 0 && e
!= PTHREAD_BARRIER_SERIAL_THREAD
)
94 puts ("error: 1st barrier_wait failed");
98 /* Give the child a chance to go to sleep in sem_wait. */
101 /* Check whether cancellation is honored when waiting in sem_wait. */
102 if (pthread_cancel (th
) != 0)
104 puts ("error: 1st cancel failed");
109 if (pthread_join (th
, &r
) != 0)
111 puts ("error: join failed");
115 if (r
!= PTHREAD_CANCELED
)
117 puts ("thread not canceled");
125 #define TEST_FUNCTION do_test ()
126 #include "../test-skeleton.c"