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// <thread> 13 14// class thread 15 16// void detach(); 17 18#include <thread> 19#include <new> 20#include <cstdlib> 21#include <cassert> 22 23class G 24{ 25 int alive_; 26public: 27 static int n_alive; 28 static bool op_run; 29 30 G() : alive_(1) {++n_alive;} 31 G(const G& g) : alive_(g.alive_) {++n_alive;} 32 ~G() {alive_ = 0; --n_alive;} 33 34 void operator()() 35 { 36 assert(alive_ == 1); 37 assert(n_alive >= 1); 38 op_run = true; 39 } 40}; 41 42int G::n_alive = 0; 43bool G::op_run = false; 44 45int main() 46{ 47 { 48 std::thread t0((G())); 49 assert(t0.joinable()); 50 t0.detach(); 51 assert(!t0.joinable()); 52 std::this_thread::sleep_for(std::chrono::milliseconds(250)); 53 assert(G::op_run); 54 assert(G::n_alive == 0); 55 } 56} 57