1/* Check if the thread created by POSIX timer using SIGEV_THREAD is
2 cancellable.
3 Copyright (C) 2020-2024 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
30static pthread_barrier_t barrier;
31static pthread_t timer_thread;
32
33static void
34cl (void *arg)
35{
36 xpthread_barrier_wait (barrier: &barrier);
37}
38
39static void
40thread_handler (union sigval sv)
41{
42 timer_thread = pthread_self ();
43
44 xpthread_barrier_wait (barrier: &barrier);
45
46 pthread_cleanup_push (cl, NULL);
47 while (1)
48 clock_nanosleep (CLOCK_REALTIME, flags: 0, req: &(struct timespec) { 1, 0 }, NULL);
49 pthread_cleanup_pop (0);
50}
51
52static int
53do_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: &barrier, NULL, count: 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: &barrier);
69
70 xpthread_cancel (thr: timer_thread);
71
72 xpthread_barrier_wait (barrier: &barrier);
73
74 return 0;
75}
76
77/* A stall in cancellation is a regression. */
78#include <support/test-driver.c>
79

source code of glibc/sysdeps/pthread/tst-cancel28.c