gdb/testsuite/gdb.threads/step-over-trips-on-watchpoint.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2014-2015 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 <unistd.h>
  20 #include <stdlib.h>
  21
  22 pthread_barrier_t barrier;
  23 pthread_t child_thread;
  24
  25 volatile unsigned int counter = 1;
  26 volatile unsigned int watch_me;
  27 volatile unsigned int other;
  28
  29 void *
  30 child_function (void *arg)
  31 {
  32   pthread_barrier_wait (&barrier);
  33
  34   while (counter > 0)
  35     {
  36       counter++;
  37
  38       watch_me = 1; /* set breakpoint child here */
  39       other = 1;
  40       usleep (1);
  41     }
  42
  43   pthread_exit (NULL);
  44 }
  45
  46 static int
  47 wait_threads (void)
  48 {
  49   return 1; /* in wait_threads */
  50 }
  51
  52 int
  53 main ()
  54 {
  55   int res;
  56   long i;
  57
  58   pthread_barrier_init (&barrier, NULL, 2);
  59
  60   res = pthread_create (&child_thread, NULL, child_function, NULL);
  61   pthread_barrier_wait (&barrier);
  62   wait_threads (); /* set wait-thread breakpoint here */
  63
  64   pthread_join (child_thread, NULL);
  65
  66   exit (EXIT_SUCCESS);
  67 }