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 static void *
  30 thread_start (void *arg)
  31 {
  32   pthread_barrier_wait (&barrier);
  33
  34   while (1)
  35     sleep (1);
  36   return NULL;
  37 }
  38
  39 static void
  40 all_started (void)
  41 {
  42 }
  43
  44 int wait_for_gdb;
  45
  46 static void
  47 function1 (void)
  48 {
  49   while (wait_for_gdb)
  50     sleep (1);
  51 }
  52
  53 static void
  54 function2 (void)
  55 {
  56   while (wait_for_gdb)
  57     sleep (1);
  58 }
  59
  60 static void
  61 function3 (void)
  62 {
  63 }
  64
  65 static void
  66 function4 (void)
  67 {
  68 }
  69
  70 static void
  71 function5 (void)
  72 {
  73 }
  74
  75 int
  76 main (int argc, char ** argv)
  77 {
  78   pthread_t thread;
  79   int len;
  80
  81   alarm (360);
  82
  83   pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1);
  84   pthread_create (&thread, NULL, thread_start, NULL);
  85
  86   pthread_barrier_wait (&barrier);
  87   all_started ();
  88
  89   while (1)
  90     {
  91       function1 (); /* set break 1 here */
  92       function2 (); /* set break 2 here */
  93       function3 ();
  94       function4 ();
  95       function5 ();
  96       sleep (1);
  97     }
  98
  99   return 0;
 100 }