1 /*
   2  * Copyright (c) 2014, 2020, 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 SharedBaseAddress
  26  * @summary Test variety of values for SharedBaseAddress, making sure
  27  *          VM handles normal values as well as edge values w/o a crash.
  28  * @requires vm.cds
  29  * @library /test/lib
  30  * @run driver SharedBaseAddress
  31  */
  32 
  33 import jdk.test.lib.cds.CDSTestUtils;
  34 import jdk.test.lib.cds.CDSOptions;
  35 import jdk.test.lib.process.OutputAnalyzer;
  36 
  37 public class SharedBaseAddress {
  38 
  39     // shared base address test table
  40     private static final String[] testTable = {
  41         "1g", "8g", "64g","512g", "4t",
  42         "32t", "128t", "0",
  43         "1", "64k", "64M",
  44         "0xfffffffffff00000", // archive top wraps around 64-bit address space
  45         "0xfff80000",         // archive top wraps around 32-bit address space
  46         "0xffffffffffffffff", // archive bottom wraps around 64-bit address space -- due to align_up()
  47         "0xffffffff",         // archive bottom wraps around 32-bit address space -- due to align_up()
  48         "0x00007ffffff00000", // end of archive will go past the end of user space on linux/x64
  49         "0",                  // always let OS pick the base address at runtime (ASLR for CDS archive)
  50     };
  51 
  52     public static void main(String[] args) throws Exception {
  53 
  54         for (String testEntry : testTable) {
  55             String filename = "SharedBaseAddress" + testEntry + ".jsa";
  56             System.out.println("sharedBaseAddress = " + testEntry);
  57             CDSOptions opts = (new CDSOptions())
  58                 .setArchiveName(filename)
  59                 .addPrefix("-XX:SharedBaseAddress=" + testEntry)
  60                 .addPrefix("-Xlog:cds=debug")
  61                 .addPrefix("-Xlog:cds+reloc=debug")
  62                 .addPrefix("-XX:NativeMemoryTracking=detail");
  63 
  64             CDSTestUtils.createArchiveAndCheck(opts);
  65             OutputAnalyzer out = CDSTestUtils.runWithArchiveAndCheck(opts);
  66             if (testEntry.equals("0")) {
  67               out.shouldContain("Archive(s) were created with -XX:SharedBaseAddress=0. Always map at os-selected address.")
  68                  .shouldContain("Try to map archive(s) at an alternative address");
  69             }
  70         }
  71     }
  72 }