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      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