85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <ostream>
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#include <folly/net/detail/SocketFileDescriptorMap.h>
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#include <folly/portability/Windows.h>
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namespace folly {
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/**
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* This is just a very thin wrapper around either a file descriptor or
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* a SOCKET depending on platform, along with a couple of helper methods
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* for explicitly converting to/from file descriptors, even on Windows.
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*/
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struct NetworkSocket {
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#ifdef _WIN32
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using native_handle_type = SOCKET;
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static constexpr native_handle_type invalid_handle_value = INVALID_SOCKET;
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#else
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using native_handle_type = int;
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static constexpr native_handle_type invalid_handle_value = -1;
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#endif
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native_handle_type data;
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constexpr NetworkSocket() : data(invalid_handle_value) {}
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constexpr explicit NetworkSocket(native_handle_type d) : data(d) {}
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template <typename T>
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static NetworkSocket fromFd(T) = delete;
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static NetworkSocket fromFd(int fd) {
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return NetworkSocket(
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netops::detail::SocketFileDescriptorMap::fdToSocket(fd));
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}
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int toFd() const {
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return netops::detail::SocketFileDescriptorMap::socketToFd(data);
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}
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friend constexpr bool operator==(
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const NetworkSocket& a,
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const NetworkSocket& b) noexcept {
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return a.data == b.data;
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}
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friend constexpr bool operator!=(
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const NetworkSocket& a,
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const NetworkSocket& b) noexcept {
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return !(a == b);
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}
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};
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template <class CharT, class Traits>
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inline std::basic_ostream<CharT, Traits>& operator<<(
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std::basic_ostream<CharT, Traits>& os,
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const NetworkSocket& addr) {
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os << "folly::NetworkSocket(" << addr.data << ")";
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return os;
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}
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} // namespace folly
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namespace std {
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template <>
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struct hash<folly::NetworkSocket> {
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size_t operator()(const folly::NetworkSocket& s) const noexcept {
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return std::hash<folly::NetworkSocket::native_handle_type>()(s.data);
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}
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};
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} // namespace std
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