user-selected-context-sync.c revision 1.1.1.4
1/* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2016-2020 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*/ 19 20#include <pthread.h> 21#include <unistd.h> 22 23#define NUM_THREADS 2 24 25static pthread_barrier_t barrier; 26 27static void 28child_sub_function (void) 29{ 30 while (1); /* thread loop line */ 31} 32 33static void * 34child_function (void *args) 35{ 36 pthread_barrier_wait (&barrier); 37 38 child_sub_function (); /* thread caller line */ 39 40 return NULL; 41} 42 43int 44main (void) 45{ 46 int i = 0; 47 pthread_t threads[NUM_THREADS]; 48 49 /* Make the test exit eventually. */ 50 alarm (20); 51 52 /* Initialize the barrier, NUM_THREADS plus the main thread. */ 53 pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1); 54 55 for (i = 0; i < NUM_THREADS; i++) 56 pthread_create (&threads[i], NULL, child_function, NULL); 57 58 pthread_barrier_wait (&barrier); 59 60 while (1); /* main break line */ 61 62 return 0; 63} 64