9ec430adae
A window is created and the browser is about to render into it the very first time, at that point it does an IPC to SF to request a new buffer. Meanwhile, the window manager removes that window from the list and the shared memory block it uses is marked as invalid. However, at that point, another window is created and is given the same index (that just go freed), but a different identity and resets the "invalid" bit in the shared block. When we go back to the buffer allocation code, we're stuck because the surface we're allocating for is gone and we don't detect it's invalid because the invalid bit has been reset. It is not sufficient to check for the invalid bit, I should also check that identities match.
132 lines
4.1 KiB
C++
132 lines
4.1 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_LAYER_H
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#define ANDROID_LAYER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <pixelflinger/pixelflinger.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include "LayerBase.h"
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#include "Transform.h"
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namespace android {
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// ---------------------------------------------------------------------------
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class Client;
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class FreezeLock;
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// ---------------------------------------------------------------------------
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const size_t NUM_BUFFERS = 2;
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class Layer : public LayerBaseClient
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{
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public:
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static const uint32_t typeInfo;
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static const char* const typeID;
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virtual char const* getTypeID() const { return typeID; }
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virtual uint32_t getTypeInfo() const { return typeInfo; }
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Layer(SurfaceFlinger* flinger, DisplayID display,
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const sp<Client>& client, int32_t i);
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virtual ~Layer();
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status_t setBuffers(uint32_t w, uint32_t h,
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PixelFormat format, uint32_t flags=0);
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void setDrawingSize(uint32_t w, uint32_t h);
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virtual void onDraw(const Region& clip) const;
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virtual uint32_t doTransaction(uint32_t transactionFlags);
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virtual void lockPageFlip(bool& recomputeVisibleRegions);
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virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
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virtual void finishPageFlip();
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virtual bool needsBlending() const { return mNeedsBlending; }
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virtual bool needsDithering() const { return mNeedsDithering; }
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virtual bool isSecure() const { return mSecure; }
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virtual sp<Surface> createSurface() const;
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virtual status_t ditch();
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// only for debugging
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inline sp<GraphicBuffer> getBuffer(int i) { return mBuffers[i]; }
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// only for debugging
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inline const sp<FreezeLock>& getFreezeLock() const { return mFreezeLock; }
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// only for debugging
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inline PixelFormat pixelFormat() const { return mFormat; }
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private:
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inline sp<GraphicBuffer> getFrontBufferLocked() {
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return mBuffers[mFrontBufferIndex];
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}
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void reloadTexture(const Region& dirty);
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uint32_t getEffectiveUsage(uint32_t usage) const;
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sp<GraphicBuffer> requestBuffer(int index, int usage);
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void destroy();
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class SurfaceLayer : public LayerBaseClient::Surface {
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public:
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SurfaceLayer(const sp<SurfaceFlinger>& flinger,
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SurfaceID id, const sp<Layer>& owner);
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~SurfaceLayer();
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private:
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virtual sp<GraphicBuffer> requestBuffer(int index, int usage);
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sp<Layer> getOwner() const {
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return static_cast<Layer*>(Surface::getOwner().get());
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}
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};
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friend class SurfaceLayer;
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sp<Surface> mSurface;
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bool mSecure;
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bool mNoEGLImageForSwBuffers;
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int32_t mFrontBufferIndex;
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bool mNeedsBlending;
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bool mNeedsDithering;
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Region mPostedDirtyRegion;
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sp<FreezeLock> mFreezeLock;
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PixelFormat mFormat;
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// protected by mLock
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sp<GraphicBuffer> mBuffers[NUM_BUFFERS];
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Texture mTextures[NUM_BUFFERS];
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uint32_t mWidth;
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uint32_t mHeight;
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mutable Mutex mLock;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_LAYER_H
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