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 join(); 17 18 #include <thread> 19 #include <new> 20 #include <cstdlib> 21 #include <cassert> 22 #include <system_error> 23 24 #include "test_macros.h" 25 26 class G 27 { 28 int alive_; 29 public: 30 static int n_alive; 31 static bool op_run; 32 G()33 G() : alive_(1) {++n_alive;} G(const G & g)34 G(const G& g) : alive_(g.alive_) {++n_alive;} ~G()35 ~G() {alive_ = 0; --n_alive;} 36 operator ()()37 void operator()() 38 { 39 assert(alive_ == 1); 40 assert(n_alive >= 1); 41 op_run = true; 42 } 43 }; 44 45 int G::n_alive = 0; 46 bool G::op_run = false; 47 foo()48void foo() {} 49 main()50int main() 51 { 52 { 53 G g; 54 std::thread t0(g); 55 assert(t0.joinable()); 56 t0.join(); 57 assert(!t0.joinable()); 58 #ifndef TEST_HAS_NO_EXCEPTIONS 59 try { 60 t0.join(); 61 assert(false); 62 } catch (std::system_error const&) { 63 } 64 #endif 65 } 66 #ifndef TEST_HAS_NO_EXCEPTIONS 67 { 68 std::thread t0(foo); 69 t0.detach(); 70 try { 71 t0.join(); 72 assert(false); 73 } catch (std::system_error const&) { 74 } 75 } 76 #endif 77 } 78