Reduce PackageManager RAM usage: ArrayMap/Set.

Transition PackageManager internals away from heavier HashMap/HashSet
to use drop-in ArrayMap/ArraySet replacements.  Saves ~38% RAM and
thousands of objects on a typical device.

Bug: 18115729
Change-Id: Ie107d2fee4b7baa4e3c3923231b4be877d1a5d2f

1 files changed, 8 insertions, 1 deletions

diff --git a/core/java/android/util/ArraySet.java b/core/java/android/util/ArraySet.java
index 423e48b610a7..68f725e688bd 100644
--- a/core/java/android/util/ArraySet.java
+++ b/core/java/android/util/ArraySet.java
@@ -245,13 +245,20 @@ public final class ArraySet<E> implements Collection<E>, Set<E> {
     /**
      * Create a new ArraySet with the mappings from the given ArraySet.
      */
-    public ArraySet(ArraySet set) {
+    public ArraySet(ArraySet<E> set) {
         this();
         if (set != null) {
             addAll(set);
         }
     }
 
+    /** {@hide} */
+    public ArraySet(Collection<E> set) {
+        this();
+        if (set != null) {
+            addAll(set);
+        }
+    }
 
     /**
      * Make the array map empty.  All storage is released.