77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_ipc_IdleSchedulerChild_h__
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#define mozilla_ipc_IdleSchedulerChild_h__
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/ipc/PIdleSchedulerChild.h"
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#include "mozilla/ipc/SharedMemoryMapping.h"
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class nsIIdlePeriod;
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namespace mozilla {
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class IdlePeriodState;
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namespace ipc {
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class BackgroundChildImpl;
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class IdleSchedulerChild final : public PIdleSchedulerChild {
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public:
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IdleSchedulerChild() = default;
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NS_INLINE_DECL_REFCOUNTING(IdleSchedulerChild)
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IPCResult RecvIdleTime(uint64_t aId, TimeDuration aBudget);
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void Init(IdlePeriodState* aIdlePeriodState);
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void Disconnect() { mIdlePeriodState = nullptr; }
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// See similar methods on PrioritizedEventQueue.
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void SetActive();
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// Returns true if activity state dropped below cpu count.
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bool SetPaused();
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typedef MozPromise<bool, ResponseRejectReason, true> MayGCPromise;
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// Returns null if a GC or GC request is already in progress.
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RefPtr<MayGCPromise> MayGCNow();
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// Regardless of how a GC is started we get informed via these.
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void StartedGC();
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void DoneGC();
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// Returns nullptr if this is the parent process or the IdleSchedulerChild has
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// already been destroyed, eg if IPC is shutting down.
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static IdleSchedulerChild* GetMainThreadIdleScheduler();
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private:
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~IdleSchedulerChild();
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friend class BackgroundChildImpl;
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// See IdleScheduleParent::sActiveChildCounter
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SharedMemoryMapping mActiveCounter;
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IdlePeriodState* mIdlePeriodState = nullptr;
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uint32_t mChildId = 0;
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// These fields replicate those in IdleSchedulerParent. Tracking them here
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// ensures we don't send confusing information to the parent, while
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// nsJSEnvironment is free to tell us about any GCs.
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bool mIsRequestingGC = false;
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bool mIsDoingGC = false;
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};
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} // namespace ipc
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} // namespace mozilla
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#endif // mozilla_ipc_IdleSchedulerChild_h__
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