1/*
2 * Copyright 2016-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#ifndef _WIN32
20#include <sys/time.h>
21#else
22// Someone decided this was a good place to define timeval.....
23#include <folly/portability/Windows.h>
24struct timezone {
25 int tz_minuteswest;
26 int tz_dsttime;
27};
28
29extern "C" {
30// Note that this needs to explicitly be `struct timezone` due to the fact that
31// the python 3 headers `#define timezone _timezone` on Windows. `_timezone` is
32// a global field that contains information on the current timezone. By
33// explicitly specifying that this is a `struct`, we ensure that it's treated as
34// a type, regardless of what name that type actually is :)
35// Note that this will break if `gettimeofday` ever becomes declared as anything
36// other than `extern "C"`, as the mangled name would be dependent on whether
37// python had been included before this header.
38int gettimeofday(timeval* tv, struct timezone*);
39void timeradd(timeval* a, timeval* b, timeval* res);
40void timersub(timeval* a, timeval* b, timeval* res);
41}
42#endif
43