Re-jigger layers

 Bug: 15185239
 Bug: 15238382

 Make DeferredLayerUpdater ref counted so that
 HardwareLayer:finalizer() works non-crashily on
 leaked layers
 Give DeferredLayerUpdater the ability to have a layer destroyer
 set so that leaked layers can still be recycled on the
 RenderThread
 Order layer updates based off of pushLayerUpdate() calls to fix
 issue with nested layers

Change-Id: I4449cee607f7e5126e02fed7464cf48038e3dfdf

1 files changed, 19 insertions, 14 deletions

diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 77c0aa7..0901963 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -229,10 +229,21 @@ void RenderProxy::runWithGlContext(RenderTask* gltask) {
     postAndWait(task);
 }
 
+CREATE_BRIDGE1(destroyLayer, Layer* layer) {
+    LayerRenderer::destroyLayer(args->layer);
+    return NULL;
+}
+
+static void enqueueDestroyLayer(Layer* layer) {
+    SETUP_TASK(destroyLayer);
+    args->layer = layer;
+    RenderThread::getInstance().queue(task);
+}
+
 CREATE_BRIDGE3(createDisplayListLayer, CanvasContext* context, int width, int height) {
     Layer* layer = args->context->createRenderLayer(args->width, args->height);
     if (!layer) return 0;
-    return new DeferredLayerUpdater(layer);
+    return new DeferredLayerUpdater(layer, enqueueDestroyLayer);
 }
 
 DeferredLayerUpdater* RenderProxy::createDisplayListLayer(int width, int height) {
@@ -242,14 +253,13 @@ DeferredLayerUpdater* RenderProxy::createDisplayListLayer(int width, int height)
     args->context = mContext;
     void* retval = postAndWait(task);
     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
-    mDrawFrameTask.addLayer(layer);
     return layer;
 }
 
 CREATE_BRIDGE1(createTextureLayer, CanvasContext* context) {
     Layer* layer = args->context->createTextureLayer();
     if (!layer) return 0;
-    return new DeferredLayerUpdater(layer);
+    return new DeferredLayerUpdater(layer, enqueueDestroyLayer);
 }
 
 DeferredLayerUpdater* RenderProxy::createTextureLayer() {
@@ -257,15 +267,9 @@ DeferredLayerUpdater* RenderProxy::createTextureLayer() {
     args->context = mContext;
     void* retval = postAndWait(task);
     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
-    mDrawFrameTask.addLayer(layer);
     return layer;
 }
 
-CREATE_BRIDGE1(destroyLayer, Layer* layer) {
-    LayerRenderer::destroyLayer(args->layer);
-    return NULL;
-}
-
 CREATE_BRIDGE3(copyLayerInto, CanvasContext* context, DeferredLayerUpdater* layer,
         SkBitmap* bitmap) {
     bool success = args->context->copyLayerInto(args->layer, args->bitmap);
@@ -280,11 +284,12 @@ bool RenderProxy::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
     return (bool) postAndWait(task);
 }
 
-void RenderProxy::destroyLayer(DeferredLayerUpdater* layer) {
-    mDrawFrameTask.removeLayer(layer);
-    SETUP_TASK(destroyLayer);
-    args->layer = layer->detachBackingLayer();
-    post(task);
+void RenderProxy::pushLayerUpdate(DeferredLayerUpdater* layer) {
+    mDrawFrameTask.pushLayerUpdate(layer);
+}
+
+void RenderProxy::cancelLayerUpdate(DeferredLayerUpdater* layer) {
+    mDrawFrameTask.removeLayerUpdate(layer);
 }
 
 CREATE_BRIDGE2(flushCaches, CanvasContext* context, Caches::FlushMode flushMode) {