1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2002, 2003, 2004 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 2 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, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, 18 Boston, MA 02111-1307, USA. 19 20 This file is copied from schedlock.c. */ 21 22 #include <stdio.h> 23 #include <unistd.h> 24 #include <stdlib.h> 25 #include <pthread.h> 26 27 void *thread_function(void *arg); /* Pointer to function executed by each thread */ 28 29 #define NUM 5 30 31 unsigned int args[NUM+1]; 32 33 int main() { 34 int res; 35 pthread_t threads[NUM]; 36 void *thread_result; 37 long i; 38 39 for (i = 0; i < NUM; i++) 40 { 41 args[i] = 1; /* Init value. */ 42 res = pthread_create(&threads[i], 43 NULL, 44 thread_function, 45 (void *) i); 46 } 47 48 args[i] = 1; 49 thread_function ((void *) i); 50 51 exit(EXIT_SUCCESS); 52 } 53 54 void *thread_function(void *arg) { 55 int my_number = (long) arg; 56 int *myp = (int *) &args[my_number]; 57 58 /* Don't run forever. Run just short of it :) */ 59 while (*myp > 0) 60 { 61 (*myp) ++; /* Loop increment. */ 62 } 63 64 pthread_exit(NULL); 65 } 66 67