gdb/testsuite/gdb.threads/signal-sigtrap.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2014-2024 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 #include <signal.h>
  22
  23 static pthread_barrier_t barrier;
  24
  25 void
  26 sigtrap_handler (int sig)
  27 {
  28 }
  29
  30 void *
  31 thread_function (void *arg)
  32 {
  33   return NULL;
  34 }
  35
  36 void *
  37 thread_function_sync (void *arg)
  38 {
  39   pthread_barrier_wait (&barrier);
  40   return thread_function (arg);
  41 }
  42
  43 int
  44 main (void)
  45 {
  46   pthread_t child_thread;
  47
  48   signal (SIGTRAP, sigtrap_handler);
  49
  50   pthread_barrier_init (&barrier, NULL, 2);
  51
  52   pthread_create (&child_thread, NULL, thread_function_sync, NULL);
  53
  54   /* Make sure that pthread_create is done once the breakpoint on
  55      thread_function triggers.  */
  56   pthread_barrier_wait (&barrier);
  57
  58   pthread_join (child_thread, NULL);
  59
  60   return 0;
  61 }