Move BLAST flag to WindowManagerService

Querying flag property in preloaded class static initialization
removes it from preloading and increases boot time.  Move query
to WindowManagerService instead when constructed

Bug: 148614188
Test: build, boot, adb shell device_config put
window_manager_native_boot wm_use_blast_adapter true/false
check that BLAST adapter is turned on/off as expected

Change-Id: I02e2327b5c2cb11a231d02fc2c5c8c1ac200aaf0

1 files changed, 13 insertions, 7 deletions

diff --git a/core/java/android/view/WindowManagerGlobal.java b/core/java/android/view/WindowManagerGlobal.java
index f03c4e731283..c22b8921390c 100644
--- a/core/java/android/view/WindowManagerGlobal.java
+++ b/core/java/android/view/WindowManagerGlobal.java
@@ -56,13 +56,7 @@ import java.util.ArrayList;
 public final class WindowManagerGlobal {
     private static final String TAG = "WindowManager";
 
-    private static final String WM_USE_BLAST_ADAPTER_FLAG = "wm_use_blast_adapter";
-
-    /**
-     * This flag controls whether ViewRootImpl will utilize the Blast Adapter
-     * to send buffer updates to SurfaceFlinger
-     */
-    public static final boolean USE_BLAST_ADAPTER = false;
+    private final boolean mUseBLASTAdapter;
 
     /**
      * The user is navigating with keys (not the touch screen), so
@@ -165,6 +159,11 @@ public final class WindowManagerGlobal {
     private Runnable mSystemPropertyUpdater;
 
     private WindowManagerGlobal() {
+        try {
+            mUseBLASTAdapter = getWindowManagerService().useBLAST();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
     }
 
     @UnsupportedAppUsage
@@ -233,6 +232,13 @@ public final class WindowManagerGlobal {
         }
     }
 
+    /**
+     * Whether or not to use BLAST for ViewRootImpl
+     */
+    public boolean useBLAST() {
+        return mUseBLASTAdapter;
+    }
+
     @UnsupportedAppUsage
     public String[] getViewRootNames() {
         synchronized (mLock) {