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- //===----------------------------------------------------------------------===//
- //
- // The LLVM Compiler Infrastructure
- //
- // This file is dual licensed under the MIT and the University of Illinois Open
- // Source Licenses. See LICENSE.TXT for details.
- //
- //===----------------------------------------------------------------------===//
- // Copyright (C) 2011 Vicente J. Botet Escriba
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- // <boost/thread/future.hpp>
- // class packaged_task<R>
- // future<R> get_future();
- #define BOOST_THREAD_VERSION 4
- #if BOOST_THREAD_VERSION == 4
- #define BOOST_THREAD_DETAIL_SIGNATURE double()
- #else
- #define BOOST_THREAD_DETAIL_SIGNATURE double
- #endif
- #include <boost/thread/future.hpp>
- #include <boost/detail/lightweight_test.hpp>
- class A
- {
- long data_;
- public:
- explicit A(long i) : data_(i) {}
- long operator()() const {return data_;}
- long operator()(long i, long j) const {return data_ + i + j;}
- };
- int main()
- {
- {
- boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p(A(5));
- boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
- //p(3, 'a');
- p();
- BOOST_TEST(f.get() == 5.0);
- }
- {
- boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p(A(5));
- boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
- try
- {
- f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
- BOOST_TEST(false);
- }
- catch (const boost::future_error& e)
- {
- BOOST_TEST(e.code() == boost::system::make_error_code(boost::future_errc::future_already_retrieved));
- }
- }
- {
- boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
- try
- {
- boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
- BOOST_TEST(false);
- }
- catch (const boost::future_error& e)
- {
- BOOST_TEST(e.code() == boost::system::make_error_code(boost::future_errc::no_state));
- }
- }
- return boost::report_errors();
- }
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