c4335c49f6
This way zero-copy supporting code can put data directly to packet object and pass it through all layers efficiently.
121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*/
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#ifndef NET_NATIVE_STACK_IMPL_HH_
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#define NET_NATIVE_STACK_IMPL_HH_
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#include "core/reactor.hh"
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namespace net {
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template <typename Protocol>
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class native_server_socket_impl;
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template <typename Protocol>
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class native_connected_socket_impl;
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class native_network_stack;
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// native_server_socket_impl
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template <typename Protocol>
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class native_server_socket_impl : public server_socket_impl {
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typename Protocol::listener _listener;
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public:
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native_server_socket_impl(Protocol& proto, uint16_t port, listen_options opt);
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virtual future<connected_socket, socket_address> accept() override;
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};
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template <typename Protocol>
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native_server_socket_impl<Protocol>::native_server_socket_impl(Protocol& proto, uint16_t port, listen_options opt)
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: _listener(proto.listen(port)) {
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}
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template <typename Protocol>
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future<connected_socket, socket_address>
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native_server_socket_impl<Protocol>::accept() {
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return _listener.accept().then([this] (typename Protocol::connection conn) {
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return make_ready_future<connected_socket, socket_address>(
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connected_socket(std::make_unique<native_connected_socket_impl<Protocol>>(std::move(conn))),
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socket_address()); // FIXME: don't fake it
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});
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}
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// native_connected_socket_impl
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template <typename Protocol>
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class native_connected_socket_impl : public connected_socket_impl {
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typename Protocol::connection _conn;
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class native_data_source_impl;
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class native_data_sink_impl;
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public:
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explicit native_connected_socket_impl(typename Protocol::connection conn)
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: _conn(std::move(conn)) {}
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virtual input_stream<char> input() override;
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virtual output_stream<char> output() override;
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};
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template <typename Protocol>
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class native_connected_socket_impl<Protocol>::native_data_source_impl final
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: public data_source_impl {
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typename Protocol::connection& _conn;
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size_t _cur_frag = 0;
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bool _eof = false;
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packet _buf;
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public:
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explicit native_data_source_impl(typename Protocol::connection& conn)
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: _conn(conn) {}
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virtual future<temporary_buffer<char>> get() override {
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if (_eof) {
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return make_ready_future<temporary_buffer<char>>(temporary_buffer<char>(0));
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}
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if (_cur_frag != _buf.nr_frags()) {
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auto& f = _buf.fragments()[_cur_frag++];
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return make_ready_future<temporary_buffer<char>>(
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temporary_buffer<char>(f.base, f.size,
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make_deleter(deleter(), [p = _buf.share()] () mutable {})));
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}
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return _conn.wait_for_data().then([this] {
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_buf = _conn.read();
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_cur_frag = 0;
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_eof = !_buf.len();
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return get();
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});
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}
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};
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template <typename Protocol>
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class native_connected_socket_impl<Protocol>::native_data_sink_impl final
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: public data_sink_impl {
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typename Protocol::connection& _conn;
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public:
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explicit native_data_sink_impl(typename Protocol::connection& conn)
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: _conn(conn) {}
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virtual future<> put(packet p) override {
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return _conn.send(std::move(p));
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}
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virtual future<> close() override {
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_conn.close_write();
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return make_ready_future<>();
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}
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};
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template <typename Protocol>
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input_stream<char>
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native_connected_socket_impl<Protocol>::input() {
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data_source ds(std::make_unique<native_data_source_impl>(_conn));
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return input_stream<char>(std::move(ds));
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}
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template <typename Protocol>
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output_stream<char>
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native_connected_socket_impl<Protocol>::output() {
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data_sink ds(std::make_unique<native_data_sink_impl>(_conn));
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return output_stream<char>(std::move(ds), 8192);
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}
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}
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#endif /* NET_NATIVE_STACK_IMPL_HH_ */
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