зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.7 KiB
C++
116 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 ts=8 et 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 SharedBufferManagerPARENT_H_
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#define SharedBufferManagerPARENT_H_
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#include "mozilla/Atomics.h" // for Atomic
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#include "mozilla/layers/PSharedBufferManagerParent.h"
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#include "mozilla/StaticPtr.h"
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#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
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#include "mozilla/ipc/ProtocolUtils.h"
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#include "mozilla/Mutex.h" // for Mutex
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namespace android {
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class GraphicBuffer;
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}
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#endif
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namespace base {
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class Thread;
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} // namespace base
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namespace mozilla {
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#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
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class Mutex;
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#endif
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namespace layers {
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class SharedBufferManagerParent : public PSharedBufferManagerParent
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{
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friend class GrallocReporter;
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public:
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/**
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* Create a SharedBufferManagerParent for child process, and link to the child side before leaving
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*/
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static PSharedBufferManagerParent* Create(Transport* aTransport, ProcessId aOtherProcess);
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#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
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android::sp<android::GraphicBuffer> GetGraphicBuffer(int64_t key);
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static android::sp<android::GraphicBuffer> GetGraphicBuffer(GrallocBufferRef aRef);
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#endif
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/**
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* Create a SharedBufferManagerParent but do not open the link
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*/
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SharedBufferManagerParent(ProcessId aOwner, base::Thread* aThread);
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virtual ~SharedBufferManagerParent();
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/**
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* When the IPC channel down or something bad make this Manager die, clear all the buffer reference!
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*/
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virtual void ActorDestroy(ActorDestroyReason aWhy) override;
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virtual bool RecvAllocateGrallocBuffer(const IntSize&, const uint32_t&, const uint32_t&, mozilla::layers::MaybeMagicGrallocBufferHandle*) override;
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virtual bool RecvDropGrallocBuffer(const mozilla::layers::MaybeMagicGrallocBufferHandle& handle) override;
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/**
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* Break the buffer's sharing state, decrease buffer reference for both side
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*/
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static void DropGrallocBuffer(ProcessId id, mozilla::layers::SurfaceDescriptor aDesc);
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// Overriden from IToplevelProtocol
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IToplevelProtocol*
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CloneToplevel(const InfallibleTArray<ProtocolFdMapping>& aFds,
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base::ProcessHandle aPeerProcess,
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mozilla::ipc::ProtocolCloneContext* aCtx) override;
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MessageLoop* GetMessageLoop();
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protected:
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/**
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* Break the buffer's sharing state, decrease buffer reference for both side
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*
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* Must be called from SharedBufferManagerParent's thread
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*/
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void DropGrallocBufferImpl(mozilla::layers::SurfaceDescriptor aDesc);
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// dispatched function
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static void DropGrallocBufferSync(SharedBufferManagerParent* mgr, mozilla::layers::SurfaceDescriptor aDesc);
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/**
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* Function for find the buffer owner, most buffer passing on IPC contains only owner/key pair.
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* Use these function to access the real buffer.
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* Caller needs to hold sManagerMonitor.
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*/
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static SharedBufferManagerParent* GetInstance(ProcessId id);
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/**
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* All living SharedBufferManager instances used to find the buffer owner, and parent->child IPCs
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*/
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static std::map<base::ProcessId, SharedBufferManagerParent*> sManagers;
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#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
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/**
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* Buffers owned by this SharedBufferManager pair
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*/
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std::map<int64_t, android::sp<android::GraphicBuffer> > mBuffers;
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#endif
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base::ProcessId mOwner;
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base::Thread* mThread;
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bool mDestroyed;
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Mutex mLock;
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static uint64_t sBufferKey;
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static StaticAutoPtr<Monitor> sManagerMonitor;
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};
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} /* namespace layers */
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} /* namespace mozilla */
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#endif /* SharedBufferManagerPARENT_H_ */
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