/* * Copyright (c) Facebook, Inc. and its affiliates. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #pragma once #include <sys/types.h> #include <string> #include <folly/portability/Sockets.h> namespace folly { namespace detail { std::string familyNameStrDefault(sa_family_t family); inline std::string familyNameStr(sa_family_t family) { switch (family) { case AF_INET: return "AF_INET"; case AF_INET6: return "AF_INET6"; case AF_UNSPEC: return "AF_UNSPEC"; case AF_UNIX: return "AF_UNIX"; default: return familyNameStrDefault(family); } } [[noreturn]] void getNthMSBitImplThrow(size_t bitCount, sa_family_t family); template <typename IPAddrType> inline bool getNthMSBitImpl(const IPAddrType& ip, size_t bitIndex, sa_family_t family) { if (bitIndex >= ip.bitCount()) { getNthMSBitImplThrow(ip.bitCount(), family); } // Underlying bytes are in n/w byte order return (ip.getNthMSByte(bitIndex / 8) & (0x80 >> (bitIndex % 8))) != 0; } } // namespace detail } // namespace folly