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495e6367af
This adds experimental::channel and experimental::concurrent_channel.
Channels may be used to send completions as messages. For example:
// Create a channel with no buffer space.
channel<void(error_code, size_t)> ch(ctx);
// The call to try_send fails as there is no buffer
// space and no waiting receive operations.
bool ok = ch.try_send(asio::error::eof, 123);
assert(!ok);
// The async_send operation blocks until a receive
// operation consumes the message.
ch.async_send(asio::error::eof, 123,
[](error_code ec)
{
// ...
});
// The async_receive consumes the message. Both the
// async_send and async_receive operations complete
// immediately.
ch.async_receive(
[](error_code ec, size_t n)
{
// ...
});
26 lines
711 B
C++
26 lines
711 B
C++
//
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// experimental/basic_concurrent_channel.cpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Disable autolinking for unit tests.
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#if !defined(BOOST_ALL_NO_LIB)
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#define BOOST_ALL_NO_LIB 1
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#endif // !defined(BOOST_ALL_NO_LIB)
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// Test that header file is self-contained.
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#include <boost/asio/experimental/basic_concurrent_channel.hpp>
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#include "../unit_test.hpp"
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BOOST_ASIO_TEST_SUITE
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(
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"experimental/basic_concurrent_channel",
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BOOST_ASIO_TEST_CASE(null_test)
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)
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