gdb/testsuite/gdb.multi/multi-target.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2017-2020 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 <stdlib.h>
  19 #include <stdio.h>
  20 #include <unistd.h>
  21 #include <limits.h>
  22 #include <string.h>
  23 #include <pthread.h>
  24
  25 #define NUM_THREADS 1
  26
  27 static pthread_barrier_t barrier;
  28
  29 volatile int exit_thread;
  30
  31 static void *
  32 thread_start (void *arg)
  33 {
  34   pthread_barrier_wait (&barrier);
  35
  36   while (!exit_thread)
  37     sleep (1);
  38   return NULL;
  39 }
  40
  41 static void
  42 all_started (void)
  43 {
  44 }
  45
  46 int wait_for_gdb;
  47
  48 static void
  49 function1 (void)
  50 {
  51   while (wait_for_gdb)
  52     sleep (1);
  53 }
  54
  55 static void
  56 function2 (void)
  57 {
  58   while (wait_for_gdb)
  59     sleep (1);
  60 }
  61
  62 static void
  63 function3 (void)
  64 {
  65 }
  66
  67 static void
  68 function4 (void)
  69 {
  70 }
  71
  72 static void
  73 function5 (void)
  74 {
  75 }
  76
  77 int
  78 main (int argc, char ** argv)
  79 {
  80   pthread_t thread;
  81   int len;
  82
  83   alarm (360);
  84
  85   pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1);
  86   pthread_create (&thread, NULL, thread_start, NULL);
  87
  88   pthread_barrier_wait (&barrier);
  89   all_started ();
  90
  91   while (1)
  92     {
  93       function1 (); /* set break 1 here */
  94       function2 (); /* set break 2 here */
  95       function3 ();
  96       function4 ();
  97       function5 ();
  98       sleep (1);
  99     }
 100
 101   return 0;
 102 }