Howard Hinnant | f39daa8 | 2010-08-28 21:01:06 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Howard Hinnant | b64f8b0 | 2010-11-16 22:09:02 +0000 | [diff] [blame] | 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
Howard Hinnant | f39daa8 | 2010-08-28 21:01:06 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
Jonathan Roelofs | 8d86b2e | 2014-09-05 19:45:05 +0000 | [diff] [blame] | 9 | // |
| 10 | // UNSUPPORTED: libcpp-has-no-threads |
Howard Hinnant | f39daa8 | 2010-08-28 21:01:06 +0000 | [diff] [blame] | 11 | |
| 12 | // <future> |
| 13 | |
| 14 | // class promise<R> |
| 15 | |
| 16 | // ~promise(); |
| 17 | |
| 18 | #include <future> |
| 19 | #include <cassert> |
| 20 | |
| 21 | int main() |
| 22 | { |
| 23 | { |
| 24 | typedef int T; |
| 25 | std::future<T> f; |
| 26 | { |
| 27 | std::promise<T> p; |
| 28 | f = p.get_future(); |
| 29 | p.set_value(3); |
| 30 | } |
| 31 | assert(f.get() == 3); |
| 32 | } |
| 33 | { |
| 34 | typedef int T; |
| 35 | std::future<T> f; |
| 36 | { |
| 37 | std::promise<T> p; |
| 38 | f = p.get_future(); |
| 39 | } |
| 40 | try |
| 41 | { |
| 42 | T i = f.get(); |
| 43 | assert(false); |
| 44 | } |
| 45 | catch (const std::future_error& e) |
| 46 | { |
| 47 | assert(e.code() == make_error_code(std::future_errc::broken_promise)); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | { |
| 52 | typedef int& T; |
| 53 | int i = 4; |
| 54 | std::future<T> f; |
| 55 | { |
| 56 | std::promise<T> p; |
| 57 | f = p.get_future(); |
| 58 | p.set_value(i); |
| 59 | } |
| 60 | assert(&f.get() == &i); |
| 61 | } |
| 62 | { |
| 63 | typedef int& T; |
| 64 | std::future<T> f; |
| 65 | { |
| 66 | std::promise<T> p; |
| 67 | f = p.get_future(); |
| 68 | } |
| 69 | try |
| 70 | { |
| 71 | T i = f.get(); |
| 72 | assert(false); |
| 73 | } |
| 74 | catch (const std::future_error& e) |
| 75 | { |
| 76 | assert(e.code() == make_error_code(std::future_errc::broken_promise)); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | { |
| 81 | typedef void T; |
| 82 | std::future<T> f; |
| 83 | { |
| 84 | std::promise<T> p; |
| 85 | f = p.get_future(); |
| 86 | p.set_value(); |
| 87 | } |
| 88 | f.get(); |
| 89 | assert(true); |
| 90 | } |
| 91 | { |
| 92 | typedef void T; |
| 93 | std::future<T> f; |
| 94 | { |
| 95 | std::promise<T> p; |
| 96 | f = p.get_future(); |
| 97 | } |
| 98 | try |
| 99 | { |
| 100 | f.get(); |
| 101 | assert(false); |
| 102 | } |
| 103 | catch (const std::future_error& e) |
| 104 | { |
Justin Bogner | 5fda833 | 2014-05-15 01:57:42 +0000 | [diff] [blame] | 105 | // LWG 2056 changed the values of future_errc, so if we're using new |
| 106 | // headers with an old library the error codes won't line up. |
| 107 | // |
| 108 | // Note that this particular check only applies to promise<void> |
| 109 | // since the other specializations happen to be implemented in the |
| 110 | // header rather than the library. |
| 111 | assert( |
| 112 | e.code() == make_error_code(std::future_errc::broken_promise) || |
| 113 | e.code() == std::error_code(0, std::future_category())); |
Howard Hinnant | f39daa8 | 2010-08-28 21:01:06 +0000 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | } |