--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutAddress.java Fri Jan 23 11:44:21 2015 -0800
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * Verify behaviour of Unsafe.get/putAddress and Unsafe.addressSize
+ * @library /testlibrary
+ * @run main GetPutAddress
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.misc.Unsafe;
+import static com.oracle.java.testlibrary.Asserts.*;
+
+public class GetPutAddress {
+ public static void main(String args[]) throws Exception {
+ Unsafe unsafe = Utils.getUnsafe();
+ int addressSize = unsafe.addressSize();
+ // Ensure the size returned from Unsafe.addressSize is correct
+ assertEquals(unsafe.addressSize(), Platform.is32bit() ? 4 : 8);
+
+ // Write the address, read it back and make sure it's the same value
+ long address = unsafe.allocateMemory(addressSize);
+ unsafe.putAddress(address, address);
+ long readAddress = unsafe.getAddress(address);
+ if (addressSize == 4) {
+ readAddress &= 0x00000000FFFFFFFFL;
+ }
+ assertEquals(address, readAddress);
+ unsafe.freeMemory(address);
+ }
+}