Proper refcounting for Minikin objects

This patch introduces proper lifecycle maintenance (based on reference
counting) for Minkin objects, particularly FontFamily and
FontCollection. The patch depends on the corresponding Ref and Unref
methods being available in Minikin.

Change-Id: I91935e953d5a522e1adc496f2ce3a598be35de2b

1 files changed, 10 insertions, 2 deletions

diff --git a/graphics/java/android/graphics/FontFamily.java b/graphics/java/android/graphics/FontFamily.java
index 7c55ae8..a759a79 100644
--- a/graphics/java/android/graphics/FontFamily.java
+++ b/graphics/java/android/graphics/FontFamily.java
@@ -36,13 +36,21 @@ public class FontFamily {
             throw new RuntimeException();
         }
     }
-    // TODO: finalization
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            nUnrefFamily(mNativePtr);
+        } finally {
+            super.finalize();
+        }
+    }
 
     public boolean addFont(File path) {
         return nAddFont(mNativePtr, path.getAbsolutePath());
     }
 
     static native long nCreateFamily();
-    static native void nDestroyFamily(long nativePtr);
+    static native void nUnrefFamily(long nativePtr);
     static native boolean nAddFont(long nativeFamily, String path);
 }