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7d637a9788
In particular remove unused dependency on rtc::TaskQueue Bug: webrtc:14169 Change-Id: Iaddf661bb0abcefb7d69608ab4f0dfe431732c9a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/334900 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Henrik Boström <hbos@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41562}
47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/*
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* Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_METRONOME_METRONOME_H_
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#define API_METRONOME_METRONOME_H_
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#include "absl/functional/any_invocable.h"
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#include "api/units/time_delta.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// The Metronome posts OnTick() calls requested with RequestCallOnNextTick.
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// The API is designed to be fully used from a single task queue. Scheduled
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// callbacks are executed on the same sequence as they were requested on. There
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// are no features implemented for cancellation. When that's needed, use e.g.
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// ScopedTaskSafety from the client.
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//
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// The metronome concept is still under experimentation, and may not be availble
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// in all platforms or applications. See https://crbug.com/1253787 for more
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// details.
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//
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// Metronome implementations must be thread-compatible.
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class RTC_EXPORT Metronome {
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public:
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virtual ~Metronome() = default;
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// Requests a call to `callback` on the next tick. Scheduled callbacks are
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// executed on the same sequence as they were requested on. There are no
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// features for cancellation. When that's needed, use e.g. ScopedTaskSafety
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// from the client.
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virtual void RequestCallOnNextTick(absl::AnyInvocable<void() &&> callback) {}
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// Returns the current tick period of the metronome.
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virtual TimeDelta TickPeriod() const = 0;
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};
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} // namespace webrtc
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#endif // API_METRONOME_METRONOME_H_
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