83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_TaskSignal_h
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#define mozilla_dom_TaskSignal_h
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/AbortSignal.h"
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#include "mozilla/dom/WebTaskSchedulingBinding.h"
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namespace mozilla::dom {
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class TaskSignal final : public AbortSignal {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TaskSignal, AbortSignal)
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IMPL_EVENT_HANDLER(prioritychange);
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static already_AddRefed<TaskSignal> Create(nsIGlobalObject* aGlobalObject,
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TaskPriority aPriority);
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static already_AddRefed<TaskSignal> Any(
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GlobalObject& aGlobal,
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const Sequence<OwningNonNull<AbortSignal>>& aSignals,
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const TaskSignalAnyInit& aInit);
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TaskPriority Priority() const { return mPriority; }
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override {
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return TaskSignal_Binding::Wrap(aCx, this, aGivenProto);
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}
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void SetPriority(TaskPriority aPriority) { mPriority = aPriority; }
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bool IsTaskSignal() const override { return true; }
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bool PriorityChanging() const { return mPriorityChanging; }
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void SetPriorityChanging(bool aPriorityChanging) {
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mPriorityChanging = aPriorityChanging;
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}
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void RunPriorityChangeAlgorithms();
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void SetWebTaskScheduler(WebTaskScheduler* aScheduler);
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// https://wicg.github.io/scheduling-apis/#tasksignal-has-fixed-priority
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bool HasFixedPriority() const { return mDependent && !mSourceTaskSignal; }
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nsTArray<RefPtr<TaskSignal>>& DependentTaskSignals() {
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return mDependentTaskSignals;
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}
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private:
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TaskSignal(nsIGlobalObject* aGlobal, TaskPriority aPriority)
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: AbortSignal(aGlobal, SignalAborted::No, JS::UndefinedHandleValue),
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mPriority(aPriority),
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mPriorityChanging(false) {
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AbortSignal::Init();
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}
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TaskPriority mPriority;
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// https://wicg.github.io/scheduling-apis/#tasksignal-priority-changing
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bool mPriorityChanging;
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nsTArray<WeakPtr<WebTaskScheduler>> mSchedulers;
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// https://wicg.github.io/scheduling-apis/#tasksignal-source-signal
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WeakPtr<TaskSignal> mSourceTaskSignal;
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// https://wicg.github.io/scheduling-apis/#tasksignal-dependent-signals
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nsTArray<RefPtr<TaskSignal>> mDependentTaskSignals;
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~TaskSignal() = default;
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};
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} // namespace mozilla::dom
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#endif
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