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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 <unistd.h>
     19 #include <assert.h>
     20 
     21 #ifndef WITH_THREADS
     22 # error "WITH_THREADS must be defined."
     23 #endif
     24 
     25 #if WITH_THREADS
     26 # include <pthread.h>
     27 
     28 static pthread_barrier_t barrier;
     29 
     30 static void *
     31 thread_func (void *p)
     32 {
     33   pthread_barrier_wait (&barrier);
     34 
     35   for (int i = 0; i < 30; i++)
     36     sleep (1);
     37 
     38   return NULL;
     39 }
     40 
     41 #endif /* WITH_THREADS */
     42 
     43 static void
     44 all_started (void)
     45 {}
     46 
     47 int
     48 main (void)
     49 {
     50   alarm (30);
     51 
     52 #if WITH_THREADS
     53   int ret = pthread_barrier_init (&barrier, NULL, 2);
     54   assert (ret == 0);
     55 
     56   pthread_t thread;
     57   ret = pthread_create (&thread, NULL, thread_func, NULL);
     58   assert (ret == 0);
     59 
     60   pthread_barrier_wait (&barrier);
     61 #endif /* WITH_THREADS */
     62 
     63   all_started ();
     64 
     65   for (int i = 0; i < 30; i++)
     66     sleep (1);
     67 
     68   return 0;
     69 }
     70