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 // <thread> 11 12 // class thread 13 14 // void join(); 15 16 #include <thread> 17 #include <new> 18 #include <cstdlib> 19 #include <cassert> 20 21 class G 22 { 23 int alive_; 24 public: 25 static int n_alive; 26 static bool op_run; 27 28 G() : alive_(1) {++n_alive;} 29 G(const G& g) : alive_(g.alive_) {++n_alive;} 30 ~G() {alive_ = 0; --n_alive;} 31 32 void operator()() 33 { 34 assert(alive_ == 1); 35 assert(n_alive == 1); 36 op_run = true; 37 } 38 }; 39 40 int G::n_alive = 0; 41 bool G::op_run = false; 42 43 int main() 44 { 45 { 46 std::thread t0((G())); 47 assert(t0.joinable()); 48 t0.join(); 49 assert(!t0.joinable()); 50 } 51 } 52
