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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) 2011,2014 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 promise<R>
- // template <class ...Args>
- // void promise::emplace(Args&& ... args);
- #define BOOST_THREAD_VERSION 3
- #include <boost/thread/future.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/static_assert.hpp>
- struct A
- {
- A() :
- value(0)
- {
- }
- A(int i) :
- value(i)
- {
- }
- A(int i, int j) :
- value(i+j)
- {
- }
- BOOST_THREAD_MOVABLE_ONLY(A)
- A(BOOST_THREAD_RV_REF(A) rhs)
- {
- if(rhs.value==0)
- throw 9;
- else
- {
- value=rhs.value;
- rhs.value=0;
- }
- }
- A& operator=(BOOST_THREAD_RV_REF(A) rhs)
- {
- if(rhs.value==0)
- throw 9;
- else
- {
- value=rhs.value;
- rhs.value=0;
- }
- return *this;
- }
- int value;
- };
- A make(int i) {
- return A(i);
- }
- A make(int i, int j) {
- return A(i, j);
- }
- struct movable2
- {
- int value_;
- BOOST_THREAD_MOVABLE_ONLY(movable2)
- movable2() : value_(1){}
- movable2(int i) : value_(i){}
- movable2(int i, int j) : value_(i+j){}
- //Move constructor and assignment
- movable2(BOOST_RV_REF(movable2) m)
- { value_ = m.value_; m.value_ = 0; }
- movable2 & operator=(BOOST_THREAD_RV_REF(movable2) m)
- { value_ = m.value_; m.value_ = 0; return *this; }
- bool moved() const //Observer
- { return !value_; }
- int value() const //Observer
- { return value_; }
- };
- movable2 move_return_function2(int i) {
- return movable2(i);
- }
- int main()
- {
- #if defined BOOST_NO_CXX11_RVALUE_REFERENCES
- BOOST_STATIC_ASSERT((boost::is_copy_constructible<movable2>::value == false));
- BOOST_STATIC_ASSERT((boost::has_move_emulation_enabled<movable2>::value == true));
- BOOST_STATIC_ASSERT((boost::is_copy_constructible<A>::value == false));
- BOOST_STATIC_ASSERT((boost::has_move_emulation_enabled<A>::value == true));
- #endif
- #if ! defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
- {
- typedef A T;
- T i;
- boost::promise<T> p;
- boost::future<T> f = p.get_future();
- p.emplace();
- try
- {
- T a = f.get(); (void)a;
- BOOST_TEST(false);
- }
- catch (int j)
- {
- BOOST_TEST(j == 9);
- }
- catch (...)
- {
- BOOST_TEST(false);
- }
- }
- {
- typedef A T;
- boost::promise<T> p;
- boost::future<T> f = p.get_future();
- p.emplace(3);
- BOOST_TEST(f.get().value == 3);
- try
- {
- T j(3);
- p.set_value(boost::move(j));
- BOOST_TEST(false);
- }
- catch (const boost::future_error& e)
- {
- BOOST_TEST(e.code() == boost::system::make_error_code(boost::future_errc::promise_already_satisfied));
- }
- catch (...)
- {
- BOOST_TEST(false);
- }
- }
- {
- boost::promise<movable2> p;
- boost::future<movable2> f = p.get_future();
- p.emplace(3);
- BOOST_TEST(f.get().value_ == 3);
- try
- {
- p.emplace(3);
- BOOST_TEST(false);
- }
- catch (const boost::future_error& e)
- {
- BOOST_TEST(e.code() == boost::system::make_error_code(boost::future_errc::promise_already_satisfied));
- }
- catch (...)
- {
- BOOST_TEST(false);
- }
- }
- {
- boost::promise<A> p;
- boost::future<A> f = p.get_future();
- p.emplace(1,2);
- BOOST_TEST(f.get().value == 3);
- try
- {
- p.emplace(1,2);
- BOOST_TEST(false);
- }
- catch (const boost::future_error& e)
- {
- BOOST_TEST(e.code() == boost::system::make_error_code(boost::future_errc::promise_already_satisfied));
- }
- catch (...)
- {
- BOOST_TEST(false);
- }
- }
- {
- typedef A T;
- boost::promise<T> p;
- boost::future<T> f = p.get_future();
- p.emplace(3);
- boost::promise<T> p2(boost::move(p));
- BOOST_TEST(f.get().value == 3);
- }
- #endif
- return boost::report_errors();
- }
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