binutils-gdb/gdb/testsuite/gdb.python/py-record-btrace-threads.c

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2017-2018 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <pthread.h>

static pthread_barrier_t barrier;
static int dummy;

static void *
func1 (void *arg)
{
  pthread_barrier_wait (&barrier);
  dummy = 1; /* bp1 */
  pthread_barrier_wait (&barrier);
  dummy = 1;
  pthread_barrier_wait (&barrier);
  return arg;
}

static void *
func2 (void *arg)
{
  pthread_barrier_wait (&barrier);
  dummy = 2;
  pthread_barrier_wait (&barrier);
  dummy = 2;
  pthread_barrier_wait (&barrier); /* bp2 */
  return arg;
}

int
main (void)
{
  pthread_t thread;

  pthread_barrier_init (&barrier, NULL, 2);

  pthread_create (&thread, NULL, func2, NULL);
  func1 (NULL);

  pthread_join (thread, NULL);
  pthread_barrier_destroy (&barrier);
  return 0;
}