gdb/testsuite/gdb.threads/pending-step.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2002-2015 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 <unistd.h>
  19 #include <stdlib.h>
  20 #include <pthread.h>
  21
  22 void *thread_function(void *arg); /* Pointer to function executed by each thread */
  23
  24 #define NUM 1
  25
  26 unsigned int args[NUM+1];
  27
  28 int main() {
  29     int res;
  30     pthread_t threads[NUM];
  31     void *thread_result;
  32     long i;
  33
  34     for (i = 1; i <= NUM; i++)
  35       {
  36         args[i] = 1;
  37         res = pthread_create(&threads[i - 1],
  38                              NULL,
  39                              thread_function,
  40                              (void *) i);
  41       }
  42
  43     /* schedlock.exp: last thread start.  */
  44     args[0] = 1;
  45     thread_function ((void *) 0);
  46
  47     exit(EXIT_SUCCESS);
  48 }
  49
  50 void *thread_function(void *arg) {
  51     int my_number =  (long) arg;
  52     int *myp = (int *) &args[my_number];
  53
  54     /* Don't run forever.  Run just short of it :)  */
  55     while (*myp > 0)
  56       {
  57         (*myp) ++; /* insert breakpoint here */
  58       }
  59
  60     pthread_exit(NULL);
  61 }