| //===-- main.c --------------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| char *pointer; |
| |
| void *nothing(void *p) { |
| return NULL; |
| } |
| |
| void *f1(void *p) { |
| pointer[0] = 'x'; |
| sleep(100); |
| return NULL; |
| } |
| |
| void *f2(void *p) { |
| pointer[0] = 'y'; |
| sleep(100); |
| return NULL; |
| } |
| |
| int main (int argc, char const *argv[]) |
| { |
| pointer = (char *)malloc(10); |
| |
| for (int i = 0; i < 3; i++) { |
| pthread_t t; |
| pthread_create(&t, NULL, nothing, NULL); |
| pthread_join(t, NULL); |
| } |
| |
| pthread_t t1; |
| pthread_create(&t1, NULL, f1, NULL); |
| |
| for (int i = 0; i < 3; i++) { |
| pthread_t t; |
| pthread_create(&t, NULL, nothing, NULL); |
| pthread_join(t, NULL); |
| } |
| |
| pthread_t t2; |
| pthread_create(&t2, NULL, f2, NULL); |
| |
| pthread_join(t1, NULL); |
| pthread_join(t2, NULL); |
| |
| return 0; |
| } |