gdb/testsuite/gdb.python/py-evthreads.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2010-2019 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 <stdio.h>
  19 #include <pthread.h>
  20 #include <unistd.h>
  21 #include <signal.h>
  22
  23 pthread_t thread2_id;
  24 pthread_t thread3_id;
  25
  26 void* thread3 (void* d)
  27 {
  28   raise (SIGUSR1);
  29
  30   return NULL;
  31 }
  32
  33 void* thread2 (void* d)
  34 {
  35   /* Do not quit thread3 asynchronously wrt thread2 stop - wait first on
  36      thread3_id to stop.  It would complicate testcase reception of the
  37      events.  */
  38
  39   pthread_create (&thread3_id, NULL, thread3, NULL); pthread_join (thread3_id, NULL);
  40
  41   return NULL;
  42 }
  43
  44 int main (void)
  45 {
  46   /* Use single line to not to race whether `thread2' breakpoint or `next' over
  47      pthread_create will stop first.  */
  48
  49   pthread_create (&thread2_id, NULL, thread2, NULL); pthread_join (thread2_id, NULL);
  50
  51   return 12;
  52 }