1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2013-2023 Free Software Foundation, Inc. 4 5 Contributed by Intel Corp. <markus.t.metzger@intel.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include <pthread.h> 21 22 static pthread_barrier_t barrier; 23 static int global; 24 25 static void * 26 test (void *arg) 27 { 28 pthread_barrier_wait (&barrier); 29 30 global = 42; /* bp.1 */ 31 32 pthread_barrier_wait (&barrier); 33 34 global = 42; /* bp.2 */ 35 36 return arg; 37 } 38 39 int 40 main (void) 41 { 42 pthread_t th; 43 44 pthread_barrier_init (&barrier, NULL, 2); 45 pthread_create (&th, NULL, test, NULL); 46 47 test (NULL); 48 49 pthread_join (th, NULL); 50 pthread_barrier_destroy (&barrier); 51 52 return 0; /* bp.3 */ 53 } 54