1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 // class packaged_task<R(ArgTypes...)>
15 // explicit packaged_task(F&& f);
28 explicit A(long i) : data_(i) {}
29 A(A&& a) : data_(a.data_) {++n_moves; a.data_ = -1;}
30 A(const A& a) : data_(a.data_) {++n_copies;}
32 long operator()(long i, long j) const {return data_ + i + j;}
41 std::packaged_task<double(int, char)> p(A(5));
43 std::future<double> f = p.get_future();
45 assert(f.get() == 105.0);
46 assert(A::n_copies == 0);
47 assert(A::n_moves > 0);
53 std::packaged_task<double(int, char)> p(a);
55 std::future<double> f = p.get_future();
57 assert(f.get() == 105.0);
58 assert(A::n_copies > 0);
59 assert(A::n_moves > 0);