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/**
* Standin for C++0x's std::async
* (C) 2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_ASYNC_H__
#define BOTAN_ASYNC_H__
#include <future>
#include <thread>
namespace Botan {
/**
* A simple version of std::async (as it is not in GCC 4.5)
* Will be removed once GCC supports it natively
*/
template<typename F>
auto std_async(F f) -> std::unique_future<decltype(f())>
{
typedef decltype(f()) result_type;
std::packaged_task<result_type ()> task(std::move(f));
std::unique_future<result_type> future = task.get_future();
std::thread thread(std::move(task));
thread.detach();
return future;
}
}
#endif
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