Let's sprinkle some FastJNI into Resources.

Before:

               benchmark   us linear runtime
                GetColor 14.9 ===========
              GetInteger 19.9 ===============
    GetLayoutAndTraverse 38.4 =============================
               GetString 38.5 ==============================

After:

               benchmark   us linear runtime
                GetColor 13.9 ==========
              GetInteger 18.8 ==============
    GetLayoutAndTraverse 38.1 =============================
               GetString 38.2 ==============================

Change-Id: I8c20e14182d2645bc62a0e7fc6345e298b11933c

1 files changed, 84 insertions, 0 deletions

diff --git a/core/tests/benchmarks/src/android/content/res/ResourcesBenchmark.java b/core/tests/benchmarks/src/android/content/res/ResourcesBenchmark.java
new file mode 100644
index 000000000000..3638473aac03
--- /dev/null
+++ b/core/tests/benchmarks/src/android/content/res/ResourcesBenchmark.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.content.res;
+
+import android.util.AttributeSet;
+import android.util.Xml;
+
+import com.android.internal.R;
+import com.google.caliper.SimpleBenchmark;
+
+import org.xmlpull.v1.XmlPullParser;
+
+public class ResourcesBenchmark extends SimpleBenchmark {
+
+    private AssetManager mAsset;
+    private Resources mRes;
+
+    private int mTextId;
+    private int mColorId;
+    private int mIntegerId;
+    private int mLayoutId;
+
+    @Override
+    protected void setUp() {
+        mAsset = new AssetManager();
+        mAsset.addAssetPath("/system/framework/framework-res.apk");
+        mRes = new Resources(mAsset, null, null);
+
+        mTextId = mRes.getIdentifier("cancel", "string", "android");
+        mColorId = mRes.getIdentifier("transparent", "color", "android");
+        mIntegerId = mRes.getIdentifier("config_shortAnimTime", "integer", "android");
+        mLayoutId = mRes.getIdentifier("two_line_list_item", "layout", "android");
+    }
+
+    @Override
+    protected void tearDown() {
+        mAsset.close();
+    }
+
+    public void timeGetString(int reps) {
+        for (int i = 0; i < reps; i++) {
+            mRes.getText(mTextId);
+        }
+    }
+
+    public void timeGetColor(int reps) {
+        for (int i = 0; i < reps; i++) {
+            mRes.getColor(mColorId, null);
+        }
+    }
+
+    public void timeGetInteger(int reps) {
+        for (int i = 0; i < reps; i++) {
+            mRes.getInteger(mIntegerId);
+        }
+    }
+
+    public void timeGetLayoutAndTraverse(int reps) throws Exception {
+        for (int i = 0; i < reps; i++) {
+            final XmlResourceParser parser = mRes.getLayout(mLayoutId);
+            try {
+                while (parser.next() != XmlPullParser.END_DOCUMENT) {
+                    // Walk the entire tree
+                }
+            } finally {
+                parser.close();
+            }
+        }
+    }
+}