1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // UNSUPPORTED: libcpp-has-no-threads 11 12 // <condition_variable> 13 14 // class condition_variable; 15 16 // ~condition_variable(); 17 18 #include <condition_variable> 19 #include <mutex> 20 #include <thread> 21 #include <cassert> 22 23 std::condition_variable* cv; 24 std::mutex m; 25 typedef std::unique_lock<std::mutex> Lock; 26 27 bool f_ready = false; 28 bool g_ready = false; 29 30 void f() 31 { 32 Lock lk(m); 33 f_ready = true; 34 cv->notify_one(); 35 delete cv; 36 } 37 38 void g() 39 { 40 Lock lk(m); 41 g_ready = true; 42 cv->notify_one(); 43 while (!f_ready) 44 cv->wait(lk); 45 } 46 47 int main() 48 { 49 cv = new std::condition_variable; 50 std::thread th2(g); 51 Lock lk(m); 52 while (!g_ready) 53 cv->wait(lk); 54 lk.unlock(); 55 std::thread th1(f); 56 th1.join(); 57 th2.join(); 58 } 59
