1 files changed, 85 insertions, 0 deletions
diff --git a/test/998-scoped-primitive-array/src/Main.java b/test/998-scoped-primitive-array/src/Main.java
new file mode 100644
index 0000000000..630e0dc1b6
--- /dev/null
+++ b/test/998-scoped-primitive-array/src/Main.java
@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+
+public class Main {
+  public Main() {}
+
+  // Measure adds the first and last element of the array by using ScopedPrimitiveArray.
+  static native long measureByteArray(long reps, byte[] arr);
+  static native long measureShortArray(long reps, short[] arr);
+  static native long measureIntArray(long reps, int[] arr);
+  static native long measureLongArray(long reps, long[] arr);
+
+  static void checkEq(long expected, long value) {
+    if (expected != value) {
+      System.out.println("error: Expected " + expected + " but got " + value);
+    }
+  }
+
+  static void runPerfTest(long reps) {
+    for (int length = 1; length <= 8192; length *= 8) {
+      byte[] bytes = new byte[length];
+      bytes[0] = 1;
+      bytes[length - 1] = 2;
+      short[] shorts = new short[length];
+      shorts[0] = 1;
+      shorts[length - 1] = 2;
+      int[] ints = new int[length];
+      ints[0] = 1;
+      ints[length - 1] = 2;
+      long[] longs = new long[length];
+      longs[0] = 1;
+      longs[length - 1] = 2;
+      long value = 0;
+      long elapsed = 0;
+      long start = 0;
+
+      start = System.nanoTime();
+      value = measureByteArray(reps, bytes);
+      elapsed = System.nanoTime() - start;
+      System.out.println("Byte length=" + length + " ns/op=" + (double) elapsed / reps);
+      checkEq(value, reps * (long) (bytes[0] + bytes[length - 1]));
+
+      start = System.nanoTime();
+      value = measureShortArray(reps, shorts);
+      elapsed = System.nanoTime() - start;
+      System.out.println("Short length=" + length + " ns/op=" + (double) elapsed / reps);
+      checkEq(value, reps * (long) (shorts[0] + shorts[length - 1]));
+
+      start = System.nanoTime();
+      value = measureIntArray(reps, ints);
+      elapsed = System.nanoTime() - start;
+      System.out.println("Int length=" + length + " ns/op=" + (double) elapsed / reps);
+      checkEq(value, reps * (ints[0] + ints[length - 1]));
+
+      start = System.nanoTime();
+      value = measureLongArray(reps, longs);
+      elapsed = System.nanoTime() - start;
+      System.out.println("Long length=" + length + " ns/op=" + (double) elapsed / reps);
+      checkEq(value, reps * (longs[0] + longs[length - 1]));
+    }
+  }
+
+  public static void main(String[] args) {
+    System.loadLibrary(args[0]);
+    long iterations = 2000000;
+    if (args.length > 1) {
+      iterations = Long.parseLong(args[1], 10);
+    }
+    runPerfTest(iterations);
+    System.out.println("Done");
+  }
+}