1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // UNSUPPORTED: libcpp-has-no-threads, c++03
10 
11 // <thread>
12 
13 // class thread
14 
15 // thread(thread&& t);
16 
17 #include <thread>
18 #include <new>
19 #include <cstdlib>
20 #include <cassert>
21 
22 #include "test_macros.h"
23 
24 class G
25 {
26     int alive_;
27 public:
28     static int n_alive;
29     static bool op_run;
30 
31     G() : alive_(1) {++n_alive;}
32     G(const G& g) : alive_(g.alive_) {++n_alive;}
33     ~G() {alive_ = 0; --n_alive;}
34 
35     void operator()()
36     {
37         assert(alive_ == 1);
38         assert(n_alive >= 1);
39         op_run = true;
40     }
41 
42     void operator()(int i, double j)
43     {
44         assert(alive_ == 1);
45         assert(n_alive >= 1);
46         assert(i == 5);
47         assert(j == 5.5);
48         op_run = true;
49     }
50 };
51 
52 int G::n_alive = 0;
53 bool G::op_run = false;
54 
55 int main(int, char**)
56 {
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 
72   return 0;
73 }
74