1 /* Check if the thread created by POSIX timer using SIGEV_THREAD is
2 cancellable.
3 Copyright (C) 2020-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20 #include <stdio.h>
21 #include <time.h>
22 #include <signal.h>
23 #include <unistd.h>
24 #include <stdbool.h>
25
26 #include <support/check.h>
27 #include <support/test-driver.h>
28 #include <support/xthread.h>
29
30 static pthread_barrier_t barrier;
31 static pthread_t timer_thread;
32
33 static void
cl(void * arg)34 cl (void *arg)
35 {
36 xpthread_barrier_wait (&barrier);
37 }
38
39 static void
thread_handler(union sigval sv)40 thread_handler (union sigval sv)
41 {
42 timer_thread = pthread_self ();
43
44 xpthread_barrier_wait (&barrier);
45
46 pthread_cleanup_push (cl, NULL);
47 while (1)
48 clock_nanosleep (CLOCK_REALTIME, 0, &(struct timespec) { 1, 0 }, NULL);
49 pthread_cleanup_pop (0);
50 }
51
52 static int
do_test(void)53 do_test (void)
54 {
55 struct sigevent sev = { 0 };
56 sev.sigev_notify = SIGEV_THREAD;
57 sev.sigev_notify_function = &thread_handler;
58
59 timer_t timerid;
60 TEST_COMPARE (timer_create (CLOCK_REALTIME, &sev, &timerid), 0);
61
62 xpthread_barrier_init (&barrier, NULL, 2);
63
64 struct itimerspec trigger = { 0 };
65 trigger.it_value.tv_nsec = 1000000;
66 TEST_COMPARE (timer_settime (timerid, 0, &trigger, NULL), 0);
67
68 xpthread_barrier_wait (&barrier);
69
70 xpthread_cancel (timer_thread);
71
72 xpthread_barrier_wait (&barrier);
73
74 return 0;
75 }
76
77 /* A stall in cancellation is a regression. */
78 #include <support/test-driver.c>
79