/usr/include/boost/asio/impl
Edit: /usr/include/boost/asio/impl/use_awaitable.hpp (7244B)
//
// impl/use_awaitable.hpp
// ~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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)
//
#ifndef BOOST_ASIO_IMPL_USE_AWAITABLE_HPP
#define BOOST_ASIO_IMPL_USE_AWAITABLE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include
#include
#include
namespace boost {
namespace asio {
namespace detail {
template
class awaitable_handler_base
: public awaitable_thread
{
public:
typedef void result_type;
typedef awaitable awaitable_type;
// Construct from the entry point of a new thread of execution.
awaitable_handler_base(awaitable a, const Executor& ex)
: awaitable_thread(std::move(a), ex)
{
}
// Transfer ownership from another awaitable_thread.
explicit awaitable_handler_base(awaitable_thread* h)
: awaitable_thread(std::move(*h))
{
}
protected:
awaitable_frame* frame() noexcept
{
return static_cast*>(this->top_of_stack_);
}
};
template
class awaitable_handler;
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
void operator()()
{
this->frame()->attach_thread(this);
this->frame()->return_void();
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
void operator()(const boost::system::error_code& ec)
{
this->frame()->attach_thread(this);
if (ec)
this->frame()->set_error(ec);
else
this->frame()->return_void();
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
void operator()(std::exception_ptr ex)
{
this->frame()->attach_thread(this);
if (ex)
this->frame()->set_except(ex);
else
this->frame()->return_void();
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
template
void operator()(Arg&& arg)
{
this->frame()->attach_thread(this);
this->frame()->return_value(std::forward(arg));
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
template
void operator()(const boost::system::error_code& ec, Arg&& arg)
{
this->frame()->attach_thread(this);
if (ec)
this->frame()->set_error(ec);
else
this->frame()->return_value(std::forward(arg));
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base
{
public:
using awaitable_handler_base::awaitable_handler_base;
template
void operator()(std::exception_ptr ex, Arg&& arg)
{
this->frame()->attach_thread(this);
if (ex)
this->frame()->set_except(ex);
else
this->frame()->return_value(std::forward(arg));
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base>
{
public:
using awaitable_handler_base>::awaitable_handler_base;
template
void operator()(Args&&... args)
{
this->frame()->attach_thread(this);
this->frame()->return_values(std::forward(args)...);
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base>
{
public:
using awaitable_handler_base>::awaitable_handler_base;
template
void operator()(const boost::system::error_code& ec, Args&&... args)
{
this->frame()->attach_thread(this);
if (ec)
this->frame()->set_error(ec);
else
this->frame()->return_values(std::forward(args)...);
this->frame()->pop_frame();
this->pump();
}
};
template
class awaitable_handler
: public awaitable_handler_base>
{
public:
using awaitable_handler_base>::awaitable_handler_base;
template
void operator()(std::exception_ptr ex, Args&&... args)
{
this->frame()->attach_thread(this);
if (ex)
this->frame()->set_except(ex);
else
this->frame()->return_values(std::forward(args)...);
this->frame()->pop_frame();
this->pump();
}
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template
class async_result, R(Args...)>
{
public:
typedef typename detail::awaitable_handler<
Executor, typename decay::type...> handler_type;
typedef typename handler_type::awaitable_type return_type;
#if defined(_MSC_VER)
template
static T dummy_return()
{
return std::move(*static_cast(nullptr));
}
template <>
static void dummy_return()
{
}
#endif // defined(_MSC_VER)
template
static return_type initiate(Initiation initiation,
use_awaitable_t u, InitArgs... args)
{
(void)u;
co_await [&](auto* frame)
{
BOOST_ASIO_HANDLER_LOCATION((u.file_name_, u.line_, u.function_name_));
handler_type handler(frame->detach_thread());
std::move(initiation)(std::move(handler), std::move(args)...);
return static_cast(nullptr);
};
for (;;) {} // Never reached.
#if defined(_MSC_VER)
co_return dummy_return();
#endif // defined(_MSC_VER)
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
} // namespace asio
} // namespace boost
#include
#endif // BOOST_ASIO_IMPL_USE_AWAITABLE_HPP