| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <condition_variable> |
| |
| // class condition_variable; |
| |
| // ~condition_variable(); |
| |
| #include <condition_variable> |
| #include <mutex> |
| #include <thread> |
| #include <cassert> |
| |
| std::condition_variable* cv; |
| std::mutex m; |
| typedef std::unique_lock<std::mutex> Lock; |
| |
| bool f_ready = false; |
| bool g_ready = false; |
| |
| void f() |
| { |
| Lock lk(m); |
| f_ready = true; |
| cv->notify_one(); |
| delete cv; |
| } |
| |
| void g() |
| { |
| Lock lk(m); |
| g_ready = true; |
| cv->notify_one(); |
| while (!f_ready) |
| cv->wait(lk); |
| } |
| |
| int main() |
| { |
| cv = new std::condition_variable; |
| std::thread th2(g); |
| Lock lk(m); |
| while (!g_ready) |
| cv->wait(lk); |
| lk.unlock(); |
| std::thread th1(f); |
| th1.join(); |
| th2.join(); |
| } |