1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2002-2013 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 23 void *thread_function(void *arg); /* Pointer to function executed by each thread */ 24 25 #define NUM 5 26 27 unsigned int args[NUM+1]; 28 main()29int main() { 30 int res; 31 pthread_t threads[NUM]; 32 void *thread_result; 33 long i; 34 35 for (i = 1; i <= NUM; i++) 36 { 37 args[i] = 1; 38 res = pthread_create(&threads[i - 1], 39 NULL, 40 thread_function, 41 (void *) i); 42 } 43 44 /* last thread start. */ 45 args[0] = 1; 46 thread_function ((void *) 0); 47 48 exit(EXIT_SUCCESS); 49 } 50 thread_function(void * arg)51void *thread_function(void *arg) { 52 int my_number = (long) arg; 53 int *myp = (int *) &args[my_number]; 54 55 /* Don't run forever. Run just short of it :) */ 56 while (*myp > 0) 57 { 58 /* main loop. */ 59 (*myp) ++; 60 usleep (1); 61 } 62 63 pthread_exit(NULL); 64 } 65