1 /*

     2  * Copyright (c) 2016, 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  * @bug 8159262

    27  * @summary layers over the boot layer are repeatedly created, during this iteration, GCs are forced to verify correct walk of module and package lists.

    28  * @modules java.base/jdk.internal.misc

    29  * @library /testlibrary /test/lib

    30  * @compile ../CompilerUtils.java

    31  * @build ModuleStressGC

    32  * @run main/othervm ModuleStressGC

    33  */

    34 

    35 import java.nio.file.Path;

    36 import java.nio.file.Paths;

    37 import jdk.test.lib.*;

    38 

    39 public class ModuleStressGC {

    40 

    41     private static final String TEST_SRC = System.getProperty("test.src");

    42     private static final String TEST_CLASSES = System.getProperty("test.classes");

    43 

    44     private static final Path SRC_DIR = Paths.get(TEST_SRC, "src");

    45     private static final Path MODS_DIR = Paths.get(TEST_CLASSES, "mods");

    46 

    47     /**

    48      * Compile two module definitions used by the test, jdk.test and jdk.translet.

    49      */

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

    51 

    52         boolean compiled;

    53         // Compile module jdk.test declaration

    54         compiled = CompilerUtils.compile(

    55             SRC_DIR.resolve("jdk.test"),

    56             MODS_DIR.resolve("jdk.test"));

    57         if (!compiled) {

    58             throw new RuntimeException("Test failed to compile module jdk.test");

    59         }

    60 

    61         // Compile module jdk.translet declaration

    62         compiled = CompilerUtils.compile(

    63             SRC_DIR.resolve("jdk.translet"),

    64             MODS_DIR.resolve("jdk.translet"),

    65             "-XaddExports:jdk.test/test=jdk.translet",

    66             "-mp", MODS_DIR.toString());

    67         if (!compiled) {

    68             throw new RuntimeException("Test failed to compile module jdk.translet");

    69         }

    70 

    71         // Sanity check that the test, jdk.test/test/MainGC.java,

    72         // correctly walks module jdk.test's reads list and package

    73         // test's, defined to module jdk.translet, export list at

    74         // GC safepoints.

    75         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    76             "-Xlog:modules=trace",

    77             "-mp", MODS_DIR.toString(),

    78             "-m", "jdk.test/test.MainGC");

    79         OutputAnalyzer oa = new OutputAnalyzer(pb.start());

    80         oa.shouldContain("package test defined in module jdk.test, exports list being walked")

    81           .shouldContain("module jdk.test reads list being walked")

    82           .shouldHaveExitValue(0);

    83     }

    84 }