1 /* Test pthread_kill.c.
2 Copyright (C) 2000-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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/>. */
18
19 #define _GNU_SOURCE
20
21 #include <pthread.h>
22 #include <signal.h>
23 #include <stdio.h>
24 #include <assert.h>
25 #include <error.h>
26 #include <errno.h>
27 #include <hurd/signal.h>
28
29 pthread_t testthread;
30
31 int i;
32
33 void *
test(void * arg)34 test (void *arg)
35 {
36 error_t err;
37
38 printf ("test: %d\n", pthread_self ());
39
40 err = pthread_kill (pthread_self (), SIGINFO);
41 if (err)
42 error (1, err, "pthread_kill");
43
44 /* To avoid using condition variables in a signal handler. */
45 while (i == 0)
46 sched_yield ();
47
48 return 0;
49 }
50
51 static void
handler(int sig)52 handler (int sig)
53 {
54 assert (pthread_equal (pthread_self (), testthread));
55 printf ("handler: %d\n", pthread_self ());
56 i = 1;
57 }
58
59 int
main(int argc,char ** argv)60 main (int argc, char **argv)
61 {
62 error_t err;
63 struct sigaction sa;
64 void *ret;
65
66 printf ("main: %d\n", pthread_self ());
67
68 sa.sa_handler = handler;
69 sa.sa_mask = 0;
70 sa.sa_flags = 0;
71
72 err = sigaction (SIGINFO, &sa, 0);
73 if (err)
74 error (1, err, "sigaction");
75
76 err = pthread_create (&testthread, 0, test, 0);
77 if (err)
78 error (1, err, "pthread_create");
79
80 err = pthread_join (testthread, &ret);
81 if (err)
82 error (1, err, "pthread_join");
83
84 assert (ret == 0);
85
86 return 0;
87 }
88