Merge "Introduce MeasuredText related perf tests"

core/java/android/text/MeasuredParagraph.java

@@ -672,6 +672,13 @@ public class MeasuredParagraph {
         return width;
     }
 
+    /**
+     * This only works if the MeasuredParagraph is computed with buildForStaticLayout.
+     */
+    @IntRange(from = 0) int getMemoryUsage() {
+        return nGetMemoryUsage(mNativePtr);
+    }
+
     private static native /* Non Zero */ long nInitBuilder();
 
     /**
@@ -718,4 +725,7 @@ public class MeasuredParagraph {
 
     @CriticalNative
     private static native /* Non Zero */ long nGetReleaseFunc();
+
+    @CriticalNative
+    private static native int nGetMemoryUsage(/* Non Zero */ long nativePtr);
 }

core/java/android/text/MeasuredText.java

@@ -333,6 +333,20 @@ public class MeasuredText implements Spanned {
         return getMeasuredParagraph(paraIndex).getWidth(start - paraStart, end - paraStart);
     }
 
+    /**
+     * Returns the size of native MeasuredText memory usage
+     *
+     * Note that this may not be aculate. Must be used only for testing purposes.
+     * @hide
+     */
+    public int getMemoryUsage() {
+        int r = 0;
+        for (int i = 0; i < getParagraphCount(); ++i) {
+            r += getMeasuredParagraph(i).getMemoryUsage();
+        }
+        return r;
+    }
+
     ///////////////////////////////////////////////////////////////////////////////////////////////
     // Spanned overrides
     //