54da338f59
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@112500 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.0 KiB
C++
47 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <future>
|
|
|
|
// class packaged_task<R(ArgTypes...)>
|
|
|
|
// packaged_task(packaged_task&) = delete;
|
|
|
|
#include <future>
|
|
#include <cassert>
|
|
|
|
class A
|
|
{
|
|
long data_;
|
|
|
|
public:
|
|
explicit A(long i) : data_(i) {}
|
|
|
|
long operator()(long i, long j) const {return data_ + i + j;}
|
|
};
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::packaged_task<double(int, char)> p0(A(5));
|
|
std::packaged_task<double(int, char)> p(p0);
|
|
assert(!p0);
|
|
assert(p);
|
|
std::future<double> f = p.get_future();
|
|
p(3, 'a');
|
|
assert(f.get() == 105.0);
|
|
}
|
|
{
|
|
std::packaged_task<double(int, char)> p0;
|
|
std::packaged_task<double(int, char)> p(p0);
|
|
assert(!p0);
|
|
assert(!p);
|
|
}
|
|
}
|