Merge "SF: Add GL texture pool" into pi-dev
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index fda7906..12267ad 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -63,7 +63,7 @@
mRefreshPending(false) {
ALOGV("Creating Layer %s", name.string());
- mFlinger->getRenderEngine().genTextures(1, &mTextureName);
+ mTextureName = mFlinger->getNewTexture();
mTexture.init(Texture::TEXTURE_EXTERNAL, mTextureName);
if (flags & ISurfaceComposerClient::eNonPremultiplied) mPremultipliedAlpha = false;
@@ -706,8 +706,12 @@
sp<IGraphicBufferConsumer> consumer;
BufferQueue::createBufferQueue(&producer, &consumer, true);
mProducer = new MonitoredProducer(producer, mFlinger, this);
- mConsumer = new BufferLayerConsumer(consumer,
- mFlinger->getRenderEngine(), mTextureName, this);
+ {
+ // Grab the SF state lock during this since it's the only safe way to access RenderEngine
+ Mutex::Autolock lock(mFlinger->mStateLock);
+ mConsumer = new BufferLayerConsumer(consumer, mFlinger->getRenderEngine(), mTextureName,
+ this);
+ }
mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
mConsumer->setContentsChangedListener(this);
mConsumer->setName(mName);
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
index 077469b..0b59147 100644
--- a/services/surfaceflinger/Client.cpp
+++ b/services/surfaceflinger/Client.cpp
@@ -170,48 +170,8 @@
}
}
- /*
- * createSurface must be called from the GL thread so that it can
- * have access to the GL context.
- */
- class MessageCreateLayer : public MessageBase {
- SurfaceFlinger* flinger;
- Client* client;
- sp<IBinder>* handle;
- sp<IGraphicBufferProducer>* gbp;
- status_t result;
- const String8& name;
- uint32_t w, h;
- PixelFormat format;
- uint32_t flags;
- sp<Layer>* parent;
- int32_t windowType;
- int32_t ownerUid;
- public:
- MessageCreateLayer(SurfaceFlinger* flinger,
- const String8& name, Client* client,
- uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
- sp<IBinder>* handle, int32_t windowType, int32_t ownerUid,
- sp<IGraphicBufferProducer>* gbp,
- sp<Layer>* parent)
- : flinger(flinger), client(client),
- handle(handle), gbp(gbp), result(NO_ERROR),
- name(name), w(w), h(h), format(format), flags(flags),
- parent(parent), windowType(windowType), ownerUid(ownerUid) {
- }
- status_t getResult() const { return result; }
- virtual bool handler() {
- result = flinger->createLayer(name, client, w, h, format, flags,
- windowType, ownerUid, handle, gbp, parent);
- return true;
- }
- };
-
- sp<MessageBase> msg = new MessageCreateLayer(mFlinger.get(),
- name, this, w, h, format, flags, handle,
- windowType, ownerUid, gbp, &parent);
- mFlinger->postMessageSync(msg);
- return static_cast<MessageCreateLayer*>( msg.get() )->getResult();
+ return mFlinger->createLayer(name, this, w, h, format, flags, windowType,
+ ownerUid, handle, gbp, &parent);
}
status_t Client::destroySurface(const sp<IBinder>& handle) {
diff --git a/services/surfaceflinger/ContainerLayer.h b/services/surfaceflinger/ContainerLayer.h
index 543f60a..b352b96 100644
--- a/services/surfaceflinger/ContainerLayer.h
+++ b/services/surfaceflinger/ContainerLayer.h
@@ -35,6 +35,8 @@
bool isVisible() const override;
void setPerFrameData(const sp<const DisplayDevice>& displayDevice) override;
+
+ bool isCreatedFromMainThread() const override { return true; }
};
} // namespace android
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 9150c3f..a14bb98 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -130,17 +130,26 @@
// drawing state & current state are identical
mDrawingState = mCurrentState;
- const auto& hwc = flinger->getHwComposer();
- const auto& activeConfig = hwc.getActiveConfig(HWC_DISPLAY_PRIMARY);
- nsecs_t displayPeriod = activeConfig->getVsyncPeriod();
- mFrameTracker.setDisplayRefreshPeriod(displayPeriod);
-
CompositorTiming compositorTiming;
flinger->getCompositorTiming(&compositorTiming);
mFrameEventHistory.initializeCompositorTiming(compositorTiming);
}
-void Layer::onFirstRef() {}
+void Layer::onFirstRef() NO_THREAD_SAFETY_ANALYSIS {
+ if (!isCreatedFromMainThread()) {
+ // Grab the SF state lock during this since it's the only way to safely access HWC
+ mFlinger->mStateLock.lock();
+ }
+
+ const auto& hwc = mFlinger->getHwComposer();
+ const auto& activeConfig = hwc.getActiveConfig(HWC_DISPLAY_PRIMARY);
+ nsecs_t displayPeriod = activeConfig->getVsyncPeriod();
+ mFrameTracker.setDisplayRefreshPeriod(displayPeriod);
+
+ if (!isCreatedFromMainThread()) {
+ mFlinger->mStateLock.unlock();
+ }
+}
Layer::~Layer() {
sp<Client> c(mClientRef.promote());
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index f4ae21a..2239679 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -360,6 +360,11 @@
*/
virtual bool isFixedSize() const { return true; }
+ // Most layers aren't created from the main thread, and therefore need to
+ // grab the SF state lock to access HWC, but ContainerLayer does, so we need
+ // to avoid grabbing the lock again to avoid deadlock
+ virtual bool isCreatedFromMainThread() const { return false; }
+
bool isPendingRemoval() const { return mPendingRemoval; }
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 6859466..cf53930 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -503,6 +503,27 @@
postMessageAsync(readProperties);
}
+uint32_t SurfaceFlinger::getNewTexture() {
+ {
+ std::lock_guard lock(mTexturePoolMutex);
+ if (!mTexturePool.empty()) {
+ uint32_t name = mTexturePool.back();
+ mTexturePool.pop_back();
+ ATRACE_INT("TexturePoolSize", mTexturePool.size());
+ return name;
+ }
+
+ // The pool was too small, so increase it for the future
+ ++mTexturePoolSize;
+ }
+
+ // The pool was empty, so we need to get a new texture name directly using a
+ // blocking call to the main thread
+ uint32_t name = 0;
+ postMessageSync(new LambdaMessage([&]() { getRenderEngine().genTextures(1, &name); }));
+ return name;
+}
+
void SurfaceFlinger::deleteTextureAsync(uint32_t texture) {
class MessageDestroyGLTexture : public MessageBase {
RE::RenderEngine& engine;
@@ -1841,6 +1862,17 @@
getBE().mTotalTime += elapsedTime;
}
getBE().mLastSwapTime = currentTime;
+
+ {
+ std::lock_guard lock(mTexturePoolMutex);
+ const size_t refillCount = mTexturePoolSize - mTexturePool.size();
+ if (refillCount > 0) {
+ const size_t offset = mTexturePool.size();
+ mTexturePool.resize(mTexturePoolSize);
+ getRenderEngine().genTextures(refillCount, mTexturePool.data() + offset);
+ ATRACE_INT("TexturePoolSize", mTexturePool.size());
+ }
+ }
}
void SurfaceFlinger::rebuildLayerStacks() {
@@ -3632,10 +3664,13 @@
// Tack on our counter whether there is a hit or not, so everyone gets a tag
String8 uniqueName = name + "#" + String8(std::to_string(dupeCounter).c_str());
+ // Grab the state lock since we're accessing mCurrentState
+ Mutex::Autolock lock(mStateLock);
+
// Loop over layers until we're sure there is no matching name
while (matchFound) {
matchFound = false;
- mDrawingState.traverseInZOrder([&](Layer* layer) {
+ mCurrentState.traverseInZOrder([&](Layer* layer) {
if (layer->getName() == uniqueName) {
matchFound = true;
uniqueName = name + "#" + String8(std::to_string(++dupeCounter).c_str());
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index afcefdb..8f724e9 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -320,6 +320,10 @@
return getDefaultDisplayDeviceLocked();
}
+ // Obtains a name from the texture pool, or, if the pool is empty, posts a
+ // synchronous message to the main thread to obtain one on the fly
+ uint32_t getNewTexture();
+
// utility function to delete a texture on the main thread
void deleteTextureAsync(uint32_t texture);
@@ -864,6 +868,13 @@
std::atomic<bool> mRefreshPending{false};
+ // We maintain a pool of pre-generated texture names to hand out to avoid
+ // layer creation needing to run on the main thread (which it would
+ // otherwise need to do to access RenderEngine).
+ std::mutex mTexturePoolMutex;
+ uint32_t mTexturePoolSize = 0;
+ std::vector<uint32_t> mTexturePool;
+
/* ------------------------------------------------------------------------
* Feature prototyping
*/
