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// id get_id() const; 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 std::thread::id id0 = t0.get_id(); 50 std::thread t1; 51 std::thread::id id1 = t1.get_id(); 52 assert(t0.get_id() != id1); 53 assert(t1.get_id() == std::thread::id()); 54 t0.join(); 55 } 56} 57