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

    26  * @summary Check to make sure that shared strings in the bootstrap CDS archive

    27  *          are actually shared

    28  * Feature support: G1GC only, compressed oops/kptrs, 64-bit os, not on windows

    29  * @requires (sun.arch.data.model != "32") & (os.family != "windows")

    30  * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)

    31  * @requires (vm.gc=="G1" | vm.gc=="null")

    32  * @library /testlibrary /../../test/lib

    33  * @modules java.base/sun.misc

    34  *          java.management

    35  * @build SharedStringsWb SharedStrings BasicJarBuilder

    36  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    37  * @run main SharedStrings

    38  */

    39 

    40 import jdk.test.lib.*;

    41 

    42 public class SharedStrings {

    43     public static void main(String[] args) throws Exception {

    44         BasicJarBuilder.build("whitebox", "sun/hotspot/WhiteBox");

    45 

    46         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    47             "-XX:+UnlockDiagnosticVMOptions",

    48             "-XX:SharedArchiveFile=./SharedStrings.jsa",

    49             "-XX:+PrintSharedSpaces",

    50             // Needed for bootclasspath match, for CDS to work with WhiteBox API

    51             "-Xbootclasspath/a:" + BasicJarBuilder.getTestJar("whitebox.jar"),

    52             "-Xshare:dump");

    53 

    54         new OutputAnalyzer(pb.start())

    55             .shouldContain("Loading classes to share")

    56             .shouldContain("Shared string table stats")

    57             .shouldHaveExitValue(0);

    58 

    59         pb = ProcessTools.createJavaProcessBuilder(

    60             "-XX:+UnlockDiagnosticVMOptions",

    61             "-XX:SharedArchiveFile=./SharedStrings.jsa",

    62             // these are required modes for shared strings

    63             "-XX:+UseCompressedOops", "-XX:+UseG1GC",

    64             // needed for access to white box test API

    65             "-Xbootclasspath/a:" + BasicJarBuilder.getTestJar("whitebox.jar"),

    66             "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",

    67             "-Xshare:on", "-showversion", "SharedStringsWb");

    68 

    69         OutputAnalyzer output = new OutputAnalyzer(pb.start());

    70 

    71         try {

    72             output.shouldContain("sharing");

    73             output.shouldHaveExitValue(0);

    74         } catch (RuntimeException e) {

    75             output.shouldContain("Unable to use shared archive");

    76             output.shouldHaveExitValue(1);

    77         }

    78     }

    79 }