1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2014-2023 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 <unistd.h> 20 #include <stdlib.h> 21 #include <pthread.h> 22 #include <signal.h> 23 24 pthread_barrier_t barrier; 25 26 void 27 handler (int sig) 28 { 29 } 30 31 void * 32 thread_function (void *arg) 33 { 34 pthread_barrier_wait (&barrier); 35 36 while (1) 37 usleep (1); 38 } 39 40 int 41 main (void) 42 { 43 pthread_t child_thread[2]; 44 int i; 45 46 signal (SIGUSR1, handler); 47 48 pthread_barrier_init (&barrier, NULL, 3); 49 50 for (i = 0; i < 2; i++) 51 pthread_create (&child_thread[i], NULL, thread_function, NULL); 52 53 pthread_barrier_wait (&barrier); 54 55 pthread_kill (child_thread[0], SIGUSR1); 56 57 for (i = 0; i < 2; i++) 58 pthread_join (child_thread[i], NULL); 59 60 return 0; 61 } 62