gdb/testsuite/gdb.mi/nsmoribund.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010
   4    Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19    This file is based on schedlock.c.  */
  20
  21 #include <stdio.h>
  22 #include <unistd.h>
  23 #include <stdlib.h>
  24 #include <pthread.h>
  25
  26 int THREADS = 10;
  27 unsigned int *args;
  28 volatile int done = 0;
  29
  30 void *
  31 thread_function (void *arg)
  32 {
  33   int my_number = (long) arg;
  34   volatile int *myp = (volatile int *) &args[my_number];
  35
  36   /* Don't run forever.  Run just short of it :)  */
  37   while (*myp > 0 && !done)
  38     {
  39       (*myp)++; /* set breakpoint here */
  40     }
  41
  42   if (done)
  43     usleep (100); /* Some time to make sure we don't mask any bad
  44                      SIGTRAP handling.  */
  45
  46   pthread_exit (NULL);
  47 }
  48
  49 int
  50 main (int argc, char **argv)
  51 {
  52   int res;
  53   pthread_t *threads;
  54   void *thread_result;
  55   long i = 0;
  56
  57   threads = malloc (THREADS * sizeof (pthread_t));
  58   args = malloc (THREADS * sizeof (unsigned int));
  59
  60   for (i = 0; i < THREADS; i++)
  61     {
  62       args[i] = 1; /* Init value.  */
  63       res = pthread_create (&threads[i],
  64                             NULL,
  65                             thread_function,
  66                             (void *) i);
  67     }
  68
  69   for (i = 0; i < THREADS; i++)
  70     pthread_join (threads[i], &thread_result);
  71
  72   exit(EXIT_SUCCESS);
  73 }