diff options
Diffstat (limited to '3rdparty/asio/include/asio/detail/descriptor_write_op.hpp')
-rw-r--r-- | 3rdparty/asio/include/asio/detail/descriptor_write_op.hpp | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/detail/descriptor_write_op.hpp b/3rdparty/asio/include/asio/detail/descriptor_write_op.hpp new file mode 100644 index 00000000000..c2bc8675f58 --- /dev/null +++ b/3rdparty/asio/include/asio/detail/descriptor_write_op.hpp @@ -0,0 +1,148 @@ +// +// detail/descriptor_write_op.hpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2021 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 ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP +#define ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include "asio/detail/config.hpp" + +#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__) + +#include "asio/detail/bind_handler.hpp" +#include "asio/detail/buffer_sequence_adapter.hpp" +#include "asio/detail/descriptor_ops.hpp" +#include "asio/detail/fenced_block.hpp" +#include "asio/detail/handler_work.hpp" +#include "asio/detail/memory.hpp" +#include "asio/detail/reactor_op.hpp" + +#include "asio/detail/push_options.hpp" + +namespace asio { +namespace detail { + +template <typename ConstBufferSequence> +class descriptor_write_op_base : public reactor_op +{ +public: + descriptor_write_op_base(const asio::error_code& success_ec, + int descriptor, const ConstBufferSequence& buffers, + func_type complete_func) + : reactor_op(success_ec, + &descriptor_write_op_base::do_perform, complete_func), + descriptor_(descriptor), + buffers_(buffers) + { + } + + static status do_perform(reactor_op* base) + { + descriptor_write_op_base* o(static_cast<descriptor_write_op_base*>(base)); + + typedef buffer_sequence_adapter<asio::const_buffer, + ConstBufferSequence> bufs_type; + + status result; + if (bufs_type::is_single_buffer) + { + result = descriptor_ops::non_blocking_write1(o->descriptor_, + bufs_type::first(o->buffers_).data(), + bufs_type::first(o->buffers_).size(), + o->ec_, o->bytes_transferred_) ? done : not_done; + } + else + { + bufs_type bufs(o->buffers_); + result = descriptor_ops::non_blocking_write(o->descriptor_, + bufs.buffers(), bufs.count(), o->ec_, o->bytes_transferred_) + ? done : not_done; + } + + ASIO_HANDLER_REACTOR_OPERATION((*o, "non_blocking_write", + o->ec_, o->bytes_transferred_)); + + return result; + } + +private: + int descriptor_; + ConstBufferSequence buffers_; +}; + +template <typename ConstBufferSequence, typename Handler, typename IoExecutor> +class descriptor_write_op + : public descriptor_write_op_base<ConstBufferSequence> +{ +public: + ASIO_DEFINE_HANDLER_PTR(descriptor_write_op); + + descriptor_write_op(const asio::error_code& success_ec, + int descriptor, const ConstBufferSequence& buffers, + Handler& handler, const IoExecutor& io_ex) + : descriptor_write_op_base<ConstBufferSequence>(success_ec, + descriptor, buffers, &descriptor_write_op::do_complete), + handler_(ASIO_MOVE_CAST(Handler)(handler)), + work_(handler_, io_ex) + { + } + + static void do_complete(void* owner, operation* base, + const asio::error_code& /*ec*/, + std::size_t /*bytes_transferred*/) + { + // Take ownership of the handler object. + descriptor_write_op* o(static_cast<descriptor_write_op*>(base)); + ptr p = { asio::detail::addressof(o->handler_), o, o }; + + ASIO_HANDLER_COMPLETION((*o)); + + // Take ownership of the operation's outstanding work. + handler_work<Handler, IoExecutor> w( + ASIO_MOVE_CAST2(handler_work<Handler, IoExecutor>)( + o->work_)); + + // Make a copy of the handler so that the memory can be deallocated before + // the upcall is made. Even if we're not about to make an upcall, a + // sub-object of the handler may be the true owner of the memory associated + // with the handler. Consequently, a local copy of the handler is required + // to ensure that any owning sub-object remains valid until after we have + // deallocated the memory here. + detail::binder2<Handler, asio::error_code, std::size_t> + handler(o->handler_, o->ec_, o->bytes_transferred_); + p.h = asio::detail::addressof(handler.handler_); + p.reset(); + + // Make the upcall if required. + if (owner) + { + fenced_block b(fenced_block::half); + ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_)); + w.complete(handler, handler.handler_); + ASIO_HANDLER_INVOCATION_END; + } + } + +private: + Handler handler_; + handler_work<Handler, IoExecutor> work_; +}; + +} // namespace detail +} // namespace asio + +#include "asio/detail/pop_options.hpp" + +#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__) + +#endif // ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP |