1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2014-2020 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 #ifdef USE_THREADS 19 20 #include <unistd.h> 21 #include <pthread.h> 22 23 #define NUM 5 24 25 pthread_barrier_t barrier; 26 27 void * 28 thread_function (void *arg) 29 { 30 volatile unsigned int counter = 1; 31 32 pthread_barrier_wait (&barrier); 33 34 while (counter > 0) 35 { 36 counter++; 37 usleep (1); 38 } 39 40 pthread_exit (NULL); 41 } 42 43 #endif /* USE_THREADS */ 44 45 void 46 setup (void) 47 { 48 #ifdef USE_THREADS 49 pthread_t threads[NUM]; 50 int i; 51 52 pthread_barrier_init (&barrier, NULL, NUM + 1); 53 for (i = 0; i < NUM; i++) 54 pthread_create (&threads[i], NULL, thread_function, NULL); 55 pthread_barrier_wait (&barrier); 56 #endif /* USE_THREADS */ 57 } 58 59 int 60 main (void) 61 { 62 setup (); 63 return 0; /* set break here */ 64 } 65