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 <stdio.h> 19#include <unistd.h> 20#include <stdlib.h> 21#include <pthread.h> 22#include <signal.h> 23 24pthread_barrier_t barrier; 25 26void 27handler (int sig) 28{ 29} 30 31void * 32thread_function (void *arg) 33{ 34 pthread_barrier_wait (&barrier); 35 36 while (1) 37 usleep (1); 38} 39 40int 41main (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