blob: 2616cb7b03841fc6f65d9278d599ee6e1d80cf50 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// @file mongo/util/timer-inl.h
/* Copyright 2010 10gen 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.
*/
/**
* Inline function implementations for the Timer class. This file simply selects
* the platform-appropriate inline functions to include.
*
* This file should only be included through timer-inl.h, which selects the
* particular implementation based on target platform.
*/
#pragma once
#if defined(MONGO_HAVE_HEADER_UNISTD_H)
#include <unistd.h>
#endif
#if defined(_WIN32)
// On Windows, prefer the Windows-specific implementation, which employs QueryPerformanceCounter.
#include "mongo/util/timer-win32-inl.h"
#elif defined(_POSIX_TIMERS) and _POSIX_TIMERS > 0 and defined(_POSIX_MONOTONIC_CLOCK) and _POSIX_MONOTONIC_CLOCK > 0
// On systems that support the POSIX clock_gettime function, and the "monotonic" clock,
// use those.
#include "mongo/util/timer-posixclock-inl.h"
#else
// If all else fails, fall back to a generic implementation. Performance may suffer.
#include "mongo/util/timer-generic-inl.h"
#endif
|
