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