Don't hardcode object layout in Unsafe and space_test.

Add a test for Unsafe.arrayBaseOffset() and Unsafe.arrayIndexScale().

Change-Id: I9cbdb79a4a7ee055129f41811a117910c8b2febd

1 files changed, 78 insertions, 0 deletions

diff --git a/test/UnsafeTest/UnsafeTest.java b/test/UnsafeTest/UnsafeTest.java
new file mode 100644
index 0000000000..f3d5289627
--- /dev/null
+++ b/test/UnsafeTest/UnsafeTest.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+import java.lang.reflect.Field;
+import sun.misc.Unsafe;
+
+public class UnsafeTest {
+  static {
+    System.loadLibrary("arttest");
+  }
+
+  private static void check(int actual, int expected, String msg) {
+    if (actual != expected) {
+      System.logE(msg + " : " + actual + " != " + expected);
+      System.exit(-1);
+    }
+  }
+
+  private static Unsafe getUnsafe() throws Exception {
+    Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
+    Field f = unsafeClass.getDeclaredField("theUnsafe");
+    f.setAccessible(true);
+    return (Unsafe) f.get(null);
+  }
+
+  public static void main(String[] args) throws Exception {
+    Unsafe unsafe = getUnsafe();
+    check(unsafe.arrayBaseOffset(boolean[].class), vmArrayBaseOffset(boolean[].class),
+        "Unsafe.arrayBaseOffset(boolean[])");
+    check(unsafe.arrayBaseOffset(byte[].class), vmArrayBaseOffset(byte[].class),
+        "Unsafe.arrayBaseOffset(byte[])");
+    check(unsafe.arrayBaseOffset(char[].class), vmArrayBaseOffset(char[].class),
+        "Unsafe.arrayBaseOffset(char[])");
+    check(unsafe.arrayBaseOffset(double[].class), vmArrayBaseOffset(double[].class),
+        "Unsafe.arrayBaseOffset(double[])");
+    check(unsafe.arrayBaseOffset(float[].class), vmArrayBaseOffset(float[].class),
+        "Unsafe.arrayBaseOffset(float[])");
+    check(unsafe.arrayBaseOffset(int[].class), vmArrayBaseOffset(int[].class),
+        "Unsafe.arrayBaseOffset(int[])");
+    check(unsafe.arrayBaseOffset(long[].class), vmArrayBaseOffset(long[].class),
+        "Unsafe.arrayBaseOffset(long[])");
+    check(unsafe.arrayBaseOffset(Object[].class), vmArrayBaseOffset(Object[].class),
+        "Unsafe.arrayBaseOffset(Object[])");
+
+    check(unsafe.arrayIndexScale(boolean[].class), vmArrayIndexScale(boolean[].class),
+        "Unsafe.arrayIndexScale(boolean[])");
+    check(unsafe.arrayIndexScale(byte[].class), vmArrayIndexScale(byte[].class),
+        "Unsafe.arrayIndexScale(byte[])");
+    check(unsafe.arrayIndexScale(char[].class), vmArrayIndexScale(char[].class),
+        "Unsafe.arrayIndexScale(char[])");
+    check(unsafe.arrayIndexScale(double[].class), vmArrayIndexScale(double[].class),
+        "Unsafe.arrayIndexScale(double[])");
+    check(unsafe.arrayIndexScale(float[].class), vmArrayIndexScale(float[].class),
+        "Unsafe.arrayIndexScale(float[])");
+    check(unsafe.arrayIndexScale(int[].class), vmArrayIndexScale(int[].class),
+        "Unsafe.arrayIndexScale(int[])");
+    check(unsafe.arrayIndexScale(long[].class), vmArrayIndexScale(long[].class),
+        "Unsafe.arrayIndexScale(long[])");
+    check(unsafe.arrayIndexScale(Object[].class), vmArrayIndexScale(Object[].class),
+        "Unsafe.arrayIndexScale(Object[])");
+  }
+
+  private static native int vmArrayBaseOffset(Class clazz);
+  private static native int vmArrayIndexScale(Class clazz);
+}