gdb/testsuite/gdb.server/stop-reply-no-thread-multi.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2021 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 <pthread.h>
  20 #include <unistd.h>
  21
  22 volatile int worker_blocked = 1;
  23 volatile int main_blocked = 1;
  24
  25 void
  26 unlock_worker (void)
  27 {
  28   worker_blocked = 0;
  29 }
  30
  31 void
  32 unlock_main (void)
  33 {
  34   main_blocked = 0;
  35 }
  36
  37 void
  38 breakpt (void)
  39 {
  40   /* Nothing.  */
  41 }
  42
  43 static void *
  44 worker (void *data)
  45 {
  46   unlock_main ();
  47
  48   while (worker_blocked)
  49     ;
  50
  51   breakpt ();
  52
  53   return NULL;
  54 }
  55
  56 int
  57 main (void)
  58 {
  59   pthread_t thr;
  60   void *retval;
  61
  62   /* Ensure the test doesn't run forever.  */
  63   alarm (99);
  64
  65   if (pthread_create (&thr, NULL, worker, NULL) != 0)
  66     abort ();
  67
  68   while (main_blocked)
  69     ;
  70
  71   unlock_worker ();
  72
  73   if (pthread_join (thr, &retval) != 0)
  74     abort ();
  75
  76   return 0;
  77 }