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 // thread(thread&& t);
17 
18 #include <thread>
19 #include <new>
20 #include <cstdlib>
21 #include <cassert>
22 
23 class G
24 {
25     int alive_;
26 public:
27     static int n_alive;
28     static bool op_run;
29 
G()30     G() : alive_(1) {++n_alive;}
G(const G & g)31     G(const G& g) : alive_(g.alive_) {++n_alive;}
~G()32     ~G() {alive_ = 0; --n_alive;}
33 
operator ()()34     void operator()()
35     {
36         assert(alive_ == 1);
37         assert(n_alive >= 1);
38         op_run = true;
39     }
40 
operator ()(int i,double j)41     void operator()(int i, double j)
42     {
43         assert(alive_ == 1);
44         assert(n_alive >= 1);
45         assert(i == 5);
46         assert(j == 5.5);
47         op_run = true;
48     }
49 };
50 
51 int G::n_alive = 0;
52 bool G::op_run = false;
53 
main()54 int main()
55 {
56 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
57     {
58         G g;
59         assert(G::n_alive == 1);
60         assert(!G::op_run);
61         std::thread t0(g, 5, 5.5);
62         std::thread::id id = t0.get_id();
63         std::thread t1 = std::move(t0);
64         assert(t1.get_id() == id);
65         assert(t0.get_id() == std::thread::id());
66         t1.join();
67         assert(G::n_alive == 1);
68         assert(G::op_run);
69     }
70     assert(G::n_alive == 0);
71 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
72 }
73