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 // <future>
11 
12 // class shared_future<R>
13 
14 // ~shared_future();
15 
16 #include <future>
17 #include <cassert>
18 
19 #include "../test_allocator.h"
20 
21 int main()
22 {
23     assert(test_alloc_base::count == 0);
24     {
25         typedef int T;
26         std::shared_future<T> f;
27         {
28             std::promise<T> p(std::allocator_arg, test_allocator<T>());
29             assert(test_alloc_base::count == 1);
30             f = p.get_future();
31             assert(test_alloc_base::count == 1);
32             assert(f.valid());
33         }
34         assert(test_alloc_base::count == 1);
35         assert(f.valid());
36     }
37     assert(test_alloc_base::count == 0);
38     {
39         typedef int& T;
40         std::shared_future<T> f;
41         {
42             std::promise<T> p(std::allocator_arg, test_allocator<int>());
43             assert(test_alloc_base::count == 1);
44             f = p.get_future();
45             assert(test_alloc_base::count == 1);
46             assert(f.valid());
47         }
48         assert(test_alloc_base::count == 1);
49         assert(f.valid());
50     }
51     assert(test_alloc_base::count == 0);
52     {
53         typedef void T;
54         std::shared_future<T> f;
55         {
56             std::promise<T> p(std::allocator_arg, test_allocator<T>());
57             assert(test_alloc_base::count == 1);
58             f = p.get_future();
59             assert(test_alloc_base::count == 1);
60             assert(f.valid());
61         }
62         assert(test_alloc_base::count == 1);
63         assert(f.valid());
64     }
65     assert(test_alloc_base::count == 0);
66 }
67