blob: f98da458ee2595c4b1c7e2e15d6364e23d7f05c0 (
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
49
50
51
|
// Copyright 2020 The Pigweed Authors
//
// 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
//
// https://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 <algorithm>
#include <thread>
#include "pw_chrono/system_clock.h"
#include "pw_thread/sleep.h"
namespace pw::this_thread {
inline void sleep_for(chrono::SystemClock::duration sleep_duration) {
sleep_duration =
std::max(sleep_duration, chrono::SystemClock::duration::zero());
// Although many implementations do yield with sleep_for(0), it is not
// required, ergo we explicitly add handling.
if (sleep_duration == chrono::SystemClock::duration::zero()) {
return std::this_thread::yield();
}
#if defined(_WIN32)
// For some reason MinGW's implementation for sleep_for doesn't work
// correctly, however sleep_until does.
return std::this_thread::sleep_until(
chrono::SystemClock::TimePointAfterAtLeast(sleep_duration));
#else
return std::this_thread::sleep_for(sleep_duration);
#endif // defined(_WIN32)
}
inline void sleep_until(chrono::SystemClock::time_point wakeup_time) {
// Although many implementations do yield with deadlines in the past until
// the current time, it is not required, ergo we explicitly add handling.
if (chrono::SystemClock::now() >= wakeup_time) {
return std::this_thread::yield();
}
return std::this_thread::sleep_until(wakeup_time);
}
} // namespace pw::this_thread
|
