Add feature context

Currently only used by app-ops, but can be used by other modules too.

AppOps will collect app-ops based on feature. Only the most basic
parts of app-ops are supporting features yet. The rest will be added
later.

Test: atest CtsAppOpsTestCases
      atest RunSettingsLibRoboTests
      atest com.android.server.wm.ActivityStarterTests
      m -j doc-comment-check-docs
Bug: 136595429
Change-Id: Ia664f4ff1c1c2ceea721d76dc491ec50c237e9ce

1 files changed, 47 insertions, 0 deletions

diff --git a/core/java/android/util/LongSparseLongArray.java b/core/java/android/util/LongSparseLongArray.java
index 7b7eea09e884..9ffd4f05bd47 100644
--- a/core/java/android/util/LongSparseLongArray.java
+++ b/core/java/android/util/LongSparseLongArray.java
@@ -17,9 +17,11 @@
 package android.util;
 
 import android.annotation.UnsupportedAppUsage;
+import android.os.Parcel;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
+import com.android.internal.util.Preconditions;
 
 import libcore.util.EmptyArray;
 
@@ -283,4 +285,49 @@ public class LongSparseLongArray implements Cloneable {
         buffer.append('}');
         return buffer.toString();
     }
+
+    /**
+     * @hide
+     */
+    public static class Parcelling implements com.android.internal.util.Parcelling {
+        @Override
+        public void parcel(Object item, Parcel dest, int parcelFlags) {
+            if (item == null) {
+                dest.writeInt(-1);
+                return;
+            }
+
+            LongSparseLongArray array = (LongSparseLongArray) item;
+            dest.writeInt(array.mSize);
+            dest.writeLongArray(array.mKeys);
+            dest.writeLongArray(array.mValues);
+        }
+
+        @Override
+        public Object unparcel(Parcel source) {
+            int size = source.readInt();
+            if (size == -1) {
+                return null;
+            }
+
+            LongSparseLongArray array = new LongSparseLongArray(0);
+
+            array.mSize = size;
+            array.mKeys = source.createLongArray();
+            array.mValues = source.createLongArray();
+
+            // Make sure array is sane
+            Preconditions.checkArgument(array.mKeys.length >= size);
+            Preconditions.checkArgument(array.mValues.length >= size);
+
+            if (size > 0) {
+                long last = array.mKeys[0];
+                for (int i = 1; i < size; i++) {
+                    Preconditions.checkArgument(last < array.mKeys[i]);
+                }
+            }
+
+            return array;
+        }
+    }
 }