1/*
2 * Copyright 2014-present Facebook, Inc.
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17#pragma once
18
19#include <folly/net/NetworkSocket.h>
20
21namespace folly {
22
23class SocketPair {
24 public:
25 enum Mode { BLOCKING, NONBLOCKING };
26
27 explicit SocketPair(Mode mode = NONBLOCKING);
28 ~SocketPair();
29
30 int operator[](int index) const {
31 return fds_[index].toFd();
32 }
33
34 void closeFD0();
35 void closeFD1();
36
37 int extractFD0() {
38 return extractFD(0);
39 }
40 int extractFD1() {
41 return extractFD(1);
42 }
43 int extractFD(int index) {
44 auto fd = fds_[index];
45 fds_[index] = NetworkSocket();
46 return fd.toFd();
47 }
48
49 private:
50 NetworkSocket fds_[2];
51};
52
53} // namespace folly
54