1 /*

     2  * Copyright (c) 2014, 2019, 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

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    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

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    23  */

    24 

    25 /*

    26  * @test

    27  * @summary If -Djava.system.class.loader=xxx is specified in command-line, disable archived non-system classes

    28  * @requires vm.cds

    29  * @library /test/lib

    30  * @modules jdk.jartool/sun.tools.jar

    31  * @compile test-classes/TestClassLoader.java

    32  * @compile test-classes/ReportMyLoader.java

    33  * @compile test-classes/TrySwitchMyLoader.java

    34  * @run driver SpecifySysLoaderProp

    35  */

    36 

    37 import java.io.*;

    38 import jdk.test.lib.process.OutputAnalyzer;

    39 

    40 public class SpecifySysLoaderProp {

    41 

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

    43     JarBuilder.build("sysloader", "TestClassLoader", "ReportMyLoader", "TrySwitchMyLoader");

    44 

    45     String jarFileName = "sysloader.jar";

    46     String appJar = TestCommon.getTestJar(jarFileName);

    47     TestCommon.testDump(appJar, TestCommon.list("ReportMyLoader"));

    48     String warning = "VM warning: Archived non-system classes are disabled because the java.system.class.loader property is specified";

    49 

    50 

    51     // (0) Baseline. Do not specify -Djava.system.class.loader

    52     //     The test class should be loaded from archive

    53     TestCommon.run(

    54         "-verbose:class",

    55         "-cp", appJar,

    56         "ReportMyLoader")

    57       .assertNormalExit("[class,load] ReportMyLoader source: shared objects file",

    58                         "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@");

    59 

    60     // (1) Try to execute the archive with -Djava.system.class.loader=no.such.Klass,

    61     //     it should fail

    62     TestCommon.run(

    63         "-cp", appJar,

    64         "-Djava.system.class.loader=no.such.Klass",

    65         "ReportMyLoader")

    66       .assertAbnormalExit(output -> {

    67           output.shouldContain(warning);

    68           output.shouldContain("ClassNotFoundException: no.such.Klass");

    69         });

    70 

    71     // (2) Try to execute the archive with -Djava.system.class.loader=TestClassLoader,

    72     //     it should run, but archived non-system classes should be disabled

    73     TestCommon.run(

    74         "-verbose:class",

    75         "-cp", appJar,

    76         "-Djava.system.class.loader=TestClassLoader",

    77         "ReportMyLoader")

    78       .assertNormalExit("ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@", //<-this is still printed because TestClassLoader simply delegates to Launcher$AppLoader, but ...

    79              "TestClassLoader.called = true", //<-but this proves that TestClassLoader was indeed called.

    80              "TestClassLoader: loadClass(\"ReportMyLoader\",") //<- this also proves that TestClassLoader was indeed called.

    81       .assertNormalExit(output -> {

    82         output.shouldMatch(".class,load. TestClassLoader source: file:");

    83         output.shouldMatch(".class,load. ReportMyLoader source: file:.*" + jarFileName);

    84         });

    85 

    86     // (3) Try to change the java.system.class.loader programmatically after

    87     //     the app's main method is executed. This should have no effect in terms of

    88     //     changing or switching the actual system class loader that's already in use.

    89     TestCommon.run(

    90         "-verbose:class",

    91         "-cp", appJar,

    92         "TrySwitchMyLoader")

    93       .assertNormalExit("[class,load] ReportMyLoader source: shared objects file",

    94              "TrySwitchMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",

    95              "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",

    96              "TestClassLoader.called = false");

    97   }

    98 }