Add the code.google.com/p/dalvik benchmarks to libcore.

I'll remove them from code.google.com afterwards.

Change-Id: I369a301ed0e116c7971caebc607c5a86d06d4ee2

1 files changed, 46 insertions, 0 deletions

diff --git a/benchmarks/regression/StringBenchmark.java b/benchmarks/regression/StringBenchmark.java
new file mode 100644
index 0000000..e09ee8b
--- /dev/null
+++ b/benchmarks/regression/StringBenchmark.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * 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 benchmarks.regression;
+
+import com.google.caliper.Param;
+import com.google.caliper.SimpleBenchmark;
+
+public class StringBenchmark extends SimpleBenchmark {
+    enum StringLengths {
+        EMPTY(""),
+        SHORT("short"),
+        EIGHTY(makeString(80)),
+        EIGHT_KI(makeString(8192));
+        final String value;
+        private StringLengths(String value) { this.value = value; }
+    }
+    @Param private StringLengths s;
+
+    private static String makeString(int length) {
+        StringBuilder result = new StringBuilder(length);
+        for (int i = 0; i < length; ++i) {
+            result.append((char) i);
+        }
+        return result.toString();
+    }
+
+    public void timeHashCode(int reps) {
+        for (int i = 0; i < reps; ++i) {
+            s.value.hashCode();
+        }
+    }
+}