libhwui: make setSurface asynchronous

On the critical path of the cold launch of applications
the main thread of the started application tells the RenderThread
to create a surface. This process is synchronous and blocks
the main thread of the application until the creation
of the EGLContext is complete.
As a consequence the launch time of the application is delayed
by time spent allocating the EGL Context in the RenderThread.

With this optimization the launch time of the settings
application is reduced by 20 ms to 40 ms.

This optimization applies to the launch of all
applications.

Change-Id: Ibf47aaa0abb8dedf7aa00693073db3785d9d6b08
Signed-off-by: Thomas Buhot <thomas.buhot@intel.com>
Signed-off-by: Zhiquan Liu <zhiquan.liu@intel.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index f2fa9cd..91ac64e 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -117,6 +117,7 @@ private:
     // TODO: Replace with something better for layer & other GL object
     // lifecycle tracking
     friend class android::uirenderer::RenderState;
+    friend class RenderProxy;
 
     void setSurface(ANativeWindow* window);
     void swapBuffers(const SkRect& dirty, EGLint width, EGLint height);
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 6d9acd4..bad12bb 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -147,7 +147,9 @@ bool RenderProxy::initialize(const sp<ANativeWindow>& window) {
     SETUP_TASK(initialize);
     args->context = mContext;
     args->window = window.get();
-    return (bool) postAndWait(task);
+    bool ret = mContext->mCanvas == NULL;
+    post(task);
+    return ret;
 }
 
 CREATE_BRIDGE2(updateSurface, CanvasContext* context, ANativeWindow* window) {