1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2014-2023 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program 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
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <stdio.h>
19#include <unistd.h>
20#include <stdlib.h>
21#include <pthread.h>
22#include <signal.h>
23
24pthread_barrier_t barrier;
25sig_atomic_t got_sigusr1;
26sig_atomic_t got_sigusr2;
27
28void
29handler_sigusr1 (int sig)
30{
31  got_sigusr1 = 1;
32}
33
34void
35handler_sigusr2 (int sig)
36{
37  got_sigusr2 = 1;
38}
39
40void *
41thread_function (void *arg)
42{
43  volatile unsigned int count = 1;
44
45  pthread_barrier_wait (&barrier);
46
47  while (count++ != 0)
48    {
49      if (got_sigusr1 && got_sigusr2)
50	break;
51      usleep (1);
52    }
53}
54
55void
56all_threads_started (void)
57{
58}
59
60void
61all_threads_signalled (void)
62{
63}
64
65void
66end (void)
67{
68}
69
70int
71main (void)
72{
73  pthread_t child_thread[2];
74  int i;
75
76  signal (SIGUSR1, handler_sigusr1);
77  signal (SIGUSR2, handler_sigusr2);
78
79  for (i = 0; i < 2; i++)
80    {
81      pthread_barrier_init (&barrier, NULL, 2);
82      pthread_create (&child_thread[i], NULL, thread_function, NULL);
83      pthread_barrier_wait (&barrier);
84      pthread_barrier_destroy (&barrier);
85    }
86
87  all_threads_started ();
88
89  pthread_kill (child_thread[0], SIGUSR1);
90  pthread_kill (child_thread[1], SIGUSR2);
91
92  all_threads_signalled ();
93
94  for (i = 0; i < 2; i++)
95    pthread_join (child_thread[i], NULL);
96
97  end ();
98  return 0;
99}
100