summaryrefslogtreecommitdiff
path: root/chromium/base/fuchsia/scheduler.h
blob: 9f20ba8223f275057c6729f3369e9d1be184ca34 (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
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_FUCHSIA_SCHEDULER_H_
#define BASE_FUCHSIA_SCHEDULER_H_

#include "base/strings/string_piece.h"
#include "base/time/time.h"

namespace base {

// Scheduling interval to use for realtime audio threads.
// TODO(crbug.com/1224707): Add scheduling period to Thread::Options and remove
// this constants.
constexpr TimeDelta kAudioSchedulingPeriod = Milliseconds(10);

// Request 30% max CPU deadline utilization for an audio thread.
// TODO(crbug.com/1174811): A different value may need to be used for WebAudio
// threads (see media::FuchsiaAudioOutputDevice). A higher capacity may need to
// be allocated in that case.
constexpr float kAudioSchedulingCapacity = 0.3;

// Scheduling interval to use for display threads.
// TODO(crbug.com/1224707): Add scheduling period to Thread::Options and remove
// this constants.
constexpr TimeDelta kDisplaySchedulingPeriod = Seconds(1) / 60;

// Request 50% max CPU deadline utilization for a display thread.
// TODO(crbug.com/1181421): Currently DISPLAY priority is not enabled for any
// thread on Fuchsia. The value below will need to be fine-tuned when it's
// enabled.
const float kDisplaySchedulingCapacity = 0.5;

}  // namespace base

#endif  // BASE_FUCHSIA_SCHEDULER_H_