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 // UNSUPPORTED: libcpp-has-no-threads 11 // UNSUPPORTED: c++98, c++03 12 13 // <future> 14 15 // class packaged_task<R(ArgTypes...)> 16 17 // packaged_task& operator=(packaged_task&& other); 18 19 #include <future> 20 #include <cassert> 21 22 class A 23 { 24 long data_; 25 26 public: 27 explicit A(long i) : data_(i) {} 28 29 long operator()(long i, long j) const {return data_ + i + j;} 30 }; 31 32 int main() 33 { 34 { 35 std::packaged_task<double(int, char)> p0(A(5)); 36 std::packaged_task<double(int, char)> p; 37 p = std::move(p0); 38 assert(!p0.valid()); 39 assert(p.valid()); 40 std::future<double> f = p.get_future(); 41 p(3, 'a'); 42 assert(f.get() == 105.0); 43 } 44 { 45 std::packaged_task<double(int, char)> p0; 46 std::packaged_task<double(int, char)> p; 47 p = std::move(p0); 48 assert(!p0.valid()); 49 assert(!p.valid()); 50 } 51 } 52
