1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 97112dae6acac544a0271a85d95342c583441e2d1Dan Albert// 107112dae6acac544a0271a85d95342c583441e2d1Dan Albert// UNSUPPORTED: libcpp-has-no-threads 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <condition_variable> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class condition_variable_any; 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// ~condition_variable_any(); 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <condition_variable> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <mutex> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <thread> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstd::condition_variable_any* cv; 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstd::mutex m; 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantbool f_ready = false; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantbool g_ready = false; 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid f() 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.lock(); 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f_ready = true; 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv->notify_one(); 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant delete cv; 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.unlock(); 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid g() 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.lock(); 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant g_ready = true; 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv->notify_one(); 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant while (!f_ready) 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv->wait(m); 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.unlock(); 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv = new std::condition_variable_any; 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::thread th2(g); 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.lock(); 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant while (!g_ready) 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv->wait(m); 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant m.unlock(); 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::thread th1(f); 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant th1.join(); 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant th2.join(); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 60