Howard Hinnant | 54da338 | 2010-08-30 18:46:21 +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 | 54da338 | 2010-08-30 18:46:21 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
Eric Fiselier | faa9a31 | 2015-08-19 04:10:15 +0000 | [diff] [blame] | 9 | |
Howard Hinnant | 54da338 | 2010-08-30 18:46:21 +0000 | [diff] [blame] | 10 | // <future> |
| 11 | |
| 12 | // class packaged_task<R(ArgTypes...)> |
| 13 | |
| 14 | // packaged_task& operator=(packaged_task&) = delete; |
| 15 | |
| 16 | #include <future> |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 17 | #include <cassert> |
| 18 | |
| 19 | class A |
| 20 | { |
| 21 | long data_; |
| 22 | |
| 23 | public: |
| 24 | explicit A(long i) : data_(i) {} |
| 25 | |
| 26 | long operator()(long i, long j) const {return data_ + i + j;} |
| 27 | }; |
Howard Hinnant | 54da338 | 2010-08-30 18:46:21 +0000 | [diff] [blame] | 28 | |
| 29 | int main() |
| 30 | { |
| 31 | { |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 32 | std::packaged_task<double(int, char)> p0(A(5)); |
| 33 | std::packaged_task<double(int, char)> p; |
| 34 | p = p0; |
| 35 | assert(!p0.valid()); |
| 36 | assert(p.valid()); |
| 37 | std::future<double> f = p.get_future(); |
| 38 | p(3, 'a'); |
| 39 | assert(f.get() == 105.0); |
| 40 | } |
| 41 | { |
| 42 | std::packaged_task<double(int, char)> p0; |
| 43 | std::packaged_task<double(int, char)> p; |
| 44 | p = p0; |
| 45 | assert(!p0.valid()); |
| 46 | assert(!p.valid()); |
Howard Hinnant | 54da338 | 2010-08-30 18:46:21 +0000 | [diff] [blame] | 47 | } |
| 48 | } |