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// Copyright (C) 2013 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 future<R>
// R future::get_or(R&&);
// R& future<R&>::get_or(R&);
#define BOOST_THREAD_VERSION 4
//#define BOOST_THREAD_USES_LOG
#define BOOST_THREAD_USES_LOG_THREAD_ID
#include <boost/thread/detail/log.hpp>
#include <boost/thread/future.hpp>
#include <boost/thread/thread.hpp>
#include <boost/core/ref.hpp>
#include <boost/detail/lightweight_test.hpp>
#if defined BOOST_THREAD_USES_CHRONO
#ifdef BOOST_MSVC
#pragma warning(disable: 4127) // conditional expression is constant
#endif
namespace boost
{
template <typename T>
struct wrap
{
wrap(T const& v) : value(v){}
T value;
};
template <typename T>
exception_ptr make_exception_ptr(T v) {
return copy_exception(wrap<T>(v));
}
}
void func1(boost::promise<int> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
p.set_value(3);
}
void func2(boost::promise<int> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
p.set_exception(boost::make_exception_ptr(3));
}
int j = 0;
void func3(boost::promise<int&> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
j = 5;
p.set_value(j);
}
void func4(boost::promise<int&> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
p.set_exception(boost::make_exception_ptr(3.5));
}
void func5(boost::promise<void> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
p.set_value();
}
void func6(boost::promise<void> p)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
p.set_exception(boost::make_exception_ptr(4));
}
int main()
{
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
{
typedef int T;
{
boost::promise<T> p;
boost::future<T> f = p.get_future();
#if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
boost::thread(func1, boost::move(p)).detach();
#else
p.set_value(3);
#endif
BOOST_TEST(f.valid());
BOOST_TEST(f.get_or(4) == 3);
#ifdef BOOST_THREAD_PROVIDES_FUTURE_INVALID_AFTER_GET
BOOST_TEST(!f.valid());
#endif
}
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
{
boost::promise<T> p;
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
boost::future<T> f = p.get_future();
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
#if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
boost::thread(func2, boost::move(p)).detach();
#else
p.set_exception(boost::make_exception_ptr(3));
#endif
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
try
{
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
BOOST_TEST(f.valid());
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
BOOST_TEST(f.get_or(4) == 4);
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
}
catch (...)
{
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
BOOST_TEST(false);
}
#ifdef BOOST_THREAD_PROVIDES_FUTURE_INVALID_AFTER_GET
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
BOOST_TEST(!f.valid());
#endif
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
}
}
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
{
typedef int& T;
{
boost::promise<T> p;
boost::future<T> f = p.get_future();
#if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
boost::thread(func3, boost::move(p)).detach();
#else
int j=5;
p.set_value(j);
#endif
BOOST_TEST(f.valid());
int k=4;
BOOST_TEST(f.get_or(boost::ref(k)) == 5);
#ifdef BOOST_THREAD_PROVIDES_FUTURE_INVALID_AFTER_GET
BOOST_TEST(!f.valid());
#endif
}
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
{
boost::promise<T> p;
boost::future<T> f = p.get_future();
#if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
boost::thread(func4, boost::move(p)).detach();
#else
p.set_exception(boost::make_exception_ptr(3.5));
#endif
try
{
BOOST_TEST(f.valid());
int j=4;
BOOST_TEST(f.get_or(boost::ref(j)) == 4);
}
catch (...)
{
BOOST_TEST(false);
}
#ifdef BOOST_THREAD_PROVIDES_FUTURE_INVALID_AFTER_GET
BOOST_TEST(!f.valid());
#endif
}
}
BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
return boost::report_errors();
}
#else
#error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
#endif
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