gdb/testsuite/gdb.threads/kill.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2014-2019 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 #ifdef USE_THREADS
  19
  20 #include <unistd.h>
  21 #include <pthread.h>
  22
  23 #define NUM 5
  24
  25 pthread_barrier_t barrier;
  26
  27 void *
  28 thread_function (void *arg)
  29 {
  30   volatile unsigned int counter = 1;
  31
  32   pthread_barrier_wait (&barrier);
  33
  34   while (counter > 0)
  35     {
  36       counter++;
  37       usleep (1);
  38     }
  39
  40   pthread_exit (NULL);
  41 }
  42
  43 #endif /* USE_THREADS */
  44
  45 void
  46 setup (void)
  47 {
  48 #ifdef USE_THREADS
  49   pthread_t threads[NUM];
  50   int i;
  51
  52   pthread_barrier_init (&barrier, NULL, NUM + 1);
  53   for (i = 0; i < NUM; i++)
  54     pthread_create (&threads[i], NULL, thread_function, NULL);
  55   pthread_barrier_wait (&barrier);
  56 #endif /* USE_THREADS */
  57 }
  58
  59 int
  60 main (void)
  61 {
  62   setup ();
  63   return 0; /* set break here */
  64 }