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//
// compose.cpp
// ~~~~~~~~~~~
//
// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//
// Disable autolinking for unit tests.
#if !defined(BOOST_ALL_NO_LIB)
#define BOOST_ALL_NO_LIB 1
#endif // !defined(BOOST_ALL_NO_LIB)
// Test that header file is self-contained.
#include <boost/asio/compose.hpp>
#include "unit_test.hpp"
#include <boost/asio/io_context.hpp>
#include <boost/asio/post.hpp>
#if defined(BOOST_ASIO_HAS_BOOST_BIND)
# include <boost/bind.hpp>
#else // defined(BOOST_ASIO_HAS_BOOST_BIND)
# include <functional>
#endif // defined(BOOST_ASIO_HAS_BOOST_BIND)
//------------------------------------------------------------------------------
class impl_0_completion_args
{
public:
explicit impl_0_completion_args(boost::asio::io_context& ioc)
: ioc_(ioc),
state_(starting)
{
}
template <typename Self>
void operator()(Self& self)
{
switch (state_)
{
case starting:
state_ = posting;
boost::asio::post(ioc_, BOOST_ASIO_MOVE_CAST(Self)(self));
break;
case posting:
self.complete();
break;
default:
break;
}
}
private:
boost::asio::io_context& ioc_;
enum { starting, posting } state_;
};
template <typename CompletionToken>
BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void())
async_0_completion_args(boost::asio::io_context& ioc,
BOOST_ASIO_MOVE_ARG(CompletionToken) token)
{
return boost::asio::async_compose<CompletionToken, void()>(
impl_0_completion_args(ioc), token);
}
void compose_0_args_handler(int* count)
{
++(*count);
}
void compose_0_completion_args_test()
{
#if defined(BOOST_ASIO_HAS_BOOST_BIND)
namespace bindns = boost;
#else // defined(BOOST_ASIO_HAS_BOOST_BIND)
namespace bindns = std;
#endif // defined(BOOST_ASIO_HAS_BOOST_BIND)
boost::asio::io_context ioc;
int count = 0;
async_0_completion_args(ioc, bindns::bind(&compose_0_args_handler, &count));
// No handlers can be called until run() is called.
BOOST_ASIO_CHECK(!ioc.stopped());
BOOST_ASIO_CHECK(count == 0);
ioc.run();
// The run() call will not return until all work has finished.
BOOST_ASIO_CHECK(ioc.stopped());
BOOST_ASIO_CHECK(count == 1);
}
//------------------------------------------------------------------------------
class impl_1_completion_arg
{
public:
explicit impl_1_completion_arg(boost::asio::io_context& ioc)
: ioc_(ioc),
state_(starting)
{
}
template <typename Self>
void operator()(Self& self)
{
switch (state_)
{
case starting:
state_ = posting;
boost::asio::post(ioc_, BOOST_ASIO_MOVE_CAST(Self)(self));
break;
case posting:
self.complete(42);
break;
default:
break;
}
}
private:
boost::asio::io_context& ioc_;
enum { starting, posting } state_;
};
template <typename CompletionToken>
BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void(int))
async_1_completion_arg(boost::asio::io_context& ioc,
BOOST_ASIO_MOVE_ARG(CompletionToken) token)
{
return boost::asio::async_compose<CompletionToken, void(int)>(
impl_1_completion_arg(ioc), token);
}
void compose_1_args_handler(int* count, int* result_out, int result)
{
++(*count);
*result_out = result;
}
void compose_1_completion_arg_test()
{
#if defined(BOOST_ASIO_HAS_BOOST_BIND)
namespace bindns = boost;
#else // defined(BOOST_ASIO_HAS_BOOST_BIND)
namespace bindns = std;
using std::placeholders::_1;
#endif // defined(BOOST_ASIO_HAS_BOOST_BIND)
boost::asio::io_context ioc;
int count = 0;
int result = 0;
async_1_completion_arg(ioc,
bindns::bind(&compose_1_args_handler, &count, &result, _1));
// No handlers can be called until run() is called.
BOOST_ASIO_CHECK(!ioc.stopped());
BOOST_ASIO_CHECK(count == 0);
BOOST_ASIO_CHECK(result == 0);
ioc.run();
// The run() call will not return until all work has finished.
BOOST_ASIO_CHECK(ioc.stopped());
BOOST_ASIO_CHECK(count == 1);
BOOST_ASIO_CHECK(result == 42);
}
//------------------------------------------------------------------------------
BOOST_ASIO_TEST_SUITE
(
"compose",
BOOST_ASIO_TEST_CASE(compose_0_completion_args_test)
BOOST_ASIO_TEST_CASE(compose_1_completion_arg_test)
)
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