1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * Test accessing the data address of a jimage. This only makes sense when the 26 * entire jimage is mapped into memory. 27 * @test ImageGetDataAddressTest 28 * @summary Unit test for JVM_ImageGetDataAddress() method 29 * @library /testlibrary /../../test/lib 30 * @build ImageGetDataAddressTest 31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * sun.hotspot.WhiteBox$WhiteBoxPermission 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+MemoryMapImage ImageGetDataAddressTest + 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-MemoryMapImage ImageGetDataAddressTest - 35 */ 36 37 import java.io.File; 38 import java.nio.ByteOrder; 39 import sun.hotspot.WhiteBox; 40 import static jdk.test.lib.Asserts.*; 41 42 public class ImageGetDataAddressTest { 43 44 public static final WhiteBox wb = WhiteBox.getWhiteBox(); 45 46 public static void main(String... args) throws Exception { 47 String javaHome = System.getProperty("java.home"); 48 String imageFile = javaHome + File.separator + "lib" + File.separator 49 + "modules" + File.separator + "bootmodules.jimage"; 50 51 if (!(new File(imageFile)).exists()) { 52 System.out.printf("Test skipped."); 53 return; 54 } 55 56 boolean isMMap = args[0].equals("+"); 57 58 boolean bigEndian = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN; 59 long id = wb.imageOpenImage(imageFile, bigEndian); 60 61 // get data for valid id 62 long dataAddr = wb.imageGetDataAddress(id); 63 assertFalse((dataAddr == 0) && isMMap, "Failed. Data address is " + dataAddr + " for valid id\n"); 64 65 // get data for invalid id == 0 66 dataAddr = wb.imageGetDataAddress(0); 67 assertTrue(dataAddr == 0, "Failed. Data address is " + dataAddr + " for zero id\n"); 68 69 wb.imageCloseImage(id); 70 } 71 }