| 1 | /* This testcase is part of GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright 2002, 2003, 2004, 2007 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 | int all_started; |
| 36 | pthread_t threads[NUM]; |
| 37 | void *thread_result; |
| 38 | long i; |
| 39 | |
| 40 | for (i = 0; i < NUM; i++) |
| 41 | { |
| 42 | args[i] = 1; /* Init value. */ |
| 43 | res = pthread_create(&threads[i], |
| 44 | NULL, |
| 45 | thread_function, |
| 46 | (void *) i); |
| 47 | } |
| 48 | |
| 49 | all_started = 0; |
| 50 | while (!all_started) |
| 51 | { |
| 52 | all_started = 1; |
| 53 | for (i = 0; i < NUM; i++) |
| 54 | { |
| 55 | if (args[i] == 1) |
| 56 | { |
| 57 | all_started = 0; |
| 58 | break; |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | args[i] = 1; |
| 64 | /* Break here */ |
| 65 | thread_function ((void *) i); |
| 66 | |
| 67 | exit(EXIT_SUCCESS); |
| 68 | } |
| 69 | |
| 70 | void *thread_function(void *arg) { |
| 71 | int my_number = (long) arg; |
| 72 | int *myp = (int *) &args[my_number]; |
| 73 | |
| 74 | /* Don't run forever. Run just short of it :) */ |
| 75 | while (*myp > 0) |
| 76 | { |
| 77 | (*myp) ++; /* Loop increment. */ |
| 78 | } |
| 79 | |
| 80 | pthread_exit(NULL); |
| 81 | } |
| 82 | |