xref: /netbsd-src/external/gpl3/gdb/dist/gdb/testsuite/gdb.threads/schedlock-new-thread.c (revision 4439cfd0acf9c7dc90625e5cd83b2317a9ab8967)
1 /* This testcase is part of GDB, the GNU debugger.
2 
3    Copyright 2021-2024 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 <pthread.h>
19 #include <assert.h>
20 #include <unistd.h>
21 
22 static void *
23 thread_func (void *arg)
24 {
25 #if !SCHEDLOCK
26   while (1)
27     sleep (1);
28 #endif
29 
30   return NULL;
31 }
32 
33 int
34 main (void)
35 {
36   pthread_t thread;
37   int ret;
38 
39   ret = pthread_create (&thread, NULL, thread_func, NULL); /* set break 1 here */
40   assert (ret == 0);
41 
42 #if SCHEDLOCK
43   /* When testing with schedlock enabled, the new thread won't run, so
44      we can't join it, as that would hang forever.  Instead, sleep for
45      a bit, enough that if the spawned thread is scheduled, it hits
46      the thread_func breakpoint before the main thread reaches the
47      "return 0" line below.  */
48   sleep (3);
49 #else
50   pthread_join (thread, NULL);
51 #endif
52 
53   return 0; /* set break 2 here */
54 }
55