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- /*
- * Copyright 2014-present Facebook, Inc.
- *
- * 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
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