2 * Copyright 2016 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include <sys/types.h>
21 #include <folly/portability/Sockets.h>
23 namespace folly { namespace detail {
25 std::string familyNameStrDefault(sa_family_t family);
27 inline std::string familyNameStr(sa_family_t family) {
38 return familyNameStrDefault(family);
42 [[noreturn]] void getNthMSBitImplThrow(size_t bitCount, sa_family_t family);
44 template <typename IPAddrType>
46 getNthMSBitImpl(const IPAddrType& ip, uint8_t bitIndex, sa_family_t family) {
47 if (bitIndex >= ip.bitCount()) {
48 getNthMSBitImplThrow(ip.bitCount(), family);
50 //Underlying bytes are in n/w byte order
51 return (ip.getNthMSByte(bitIndex / 8) & (0x80 >> (bitIndex % 8))) != 0;