gdb/testsuite/gdb.mi/nsmoribund.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2002-2023 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    This file is based on schedlock.c.  */
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <stdlib.h>
  23 #include <pthread.h>
  24
  25 int THREADS = 10;
  26 unsigned int *args;
  27 volatile int done = 0;
  28
  29 void *
  30 thread_function (void *arg)
  31 {
  32   int my_number = (long) arg;
  33   volatile int *myp = (volatile int *) &args[my_number];
  34
  35   /* Don't run forever.  Run just short of it :)  */
  36   while (*myp > 0 && !done)
  37     {
  38       (*myp)++; /* set breakpoint here */
  39     }
  40
  41   if (done)
  42     usleep (100); /* Some time to make sure we don't mask any bad
  43                      SIGTRAP handling.  */
  44
  45   pthread_exit (NULL);
  46 }
  47
  48 int
  49 main (int argc, char **argv)
  50 {
  51   int res;
  52   pthread_t *threads;
  53   void *thread_result;
  54   long i = 0;
  55
  56   threads = malloc (THREADS * sizeof (pthread_t));
  57   args = malloc (THREADS * sizeof (unsigned int));
  58
  59   for (i = 0; i < THREADS; i++)
  60     {
  61       args[i] = 1; /* Init value.  */
  62       res = pthread_create (&threads[i],
  63                             NULL,
  64                             thread_function,
  65                             (void *) i);
  66     }
  67
  68   for (i = 0; i < THREADS; i++)
  69     pthread_join (threads[i], &thread_result);
  70
  71   exit(EXIT_SUCCESS);
  72 }