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
10 
11 // <thread>
12 
13 // class thread
14 
15 // bool joinable() const;
16 
17 #include <thread>
18 #include <new>
19 #include <cstdlib>
20 #include <cassert>
21 
22 #include "make_test_thread.h"
23 #include "test_macros.h"
24 
25 class G
26 {
27     int alive_;
28 public:
29     static int n_alive;
30     static bool op_run;
31 
G()32     G() : alive_(1) {++n_alive;}
G(const G & g)33     G(const G& g) : alive_(g.alive_) {++n_alive;}
~G()34     ~G() {alive_ = 0; --n_alive;}
35 
operator ()()36     void operator()()
37     {
38         assert(alive_ == 1);
39         assert(n_alive >= 1);
40         op_run = true;
41     }
42 };
43 
44 int G::n_alive = 0;
45 bool G::op_run = false;
46 
main(int,char **)47 int main(int, char**)
48 {
49     {
50         G g;
51         std::thread t0 = support::make_test_thread(g);
52         assert(t0.joinable());
53         t0.join();
54         assert(!t0.joinable());
55     }
56 
57   return 0;
58 }
59