1 // Copyright 2021 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_FUCHSIA_SCHEDULER_H_ 6 #define BASE_FUCHSIA_SCHEDULER_H_ 7 8 #include "base/strings/string_piece.h" 9 #include "base/time/time.h" 10 11 namespace base { 12 13 // Scheduling interval to use for realtime audio threads. 14 // TODO(crbug.com/1224707): Add scheduling period to Thread::Options and remove 15 // this constants. 16 constexpr TimeDelta kAudioSchedulingPeriod = Milliseconds(10); 17 18 // Request 30% max CPU deadline utilization for an audio thread. 19 // TODO(crbug.com/1174811): A different value may need to be used for WebAudio 20 // threads (see media::FuchsiaAudioOutputDevice). A higher capacity may need to 21 // be allocated in that case. 22 constexpr float kAudioSchedulingCapacity = 0.3; 23 24 // Scheduling interval to use for display threads. 25 // TODO(crbug.com/1224707): Add scheduling period to Thread::Options and remove 26 // this constants. 27 constexpr TimeDelta kDisplaySchedulingPeriod = Seconds(1) / 60; 28 29 // Request 50% max CPU deadline utilization for a display thread. 30 // TODO(crbug.com/1181421): Currently DISPLAY priority is not enabled for any 31 // thread on Fuchsia. The value below will need to be fine-tuned when it's 32 // enabled. 33 const float kDisplaySchedulingCapacity = 0.5; 34 35 } // namespace base 36 37 #endif // BASE_FUCHSIA_SCHEDULER_H_ 38