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// template <class Lock, class Predicate> 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// void wait(Lock& lock, Predicate pred); 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <condition_variable> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <mutex> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <thread> 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <functional> 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstd::condition_variable_any cv; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttypedef std::timed_mutex L0; 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttypedef std::unique_lock<L0> L1; 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard HinnantL0 m0; 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint test1 = 0; 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint test2 = 0; 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantclass Pred 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int& i_; 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant explicit Pred(int& i) : i_(i) {} 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant bool operator()() {return i_ != 0;} 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid f() 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant L1 lk(m0); 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(test2 == 0); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test1 = 1; 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv.notify_one(); 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv.wait(lk, Pred(test2)); 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(test2 != 0); 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant L1 lk(m0); 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::thread t(f); 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(test1 == 0); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant while (test1 == 0) 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv.wait(lk); 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(test1 != 0); 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test2 = 1; 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant lk.unlock(); 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant cv.notify_one(); 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant t.join(); 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 67