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Java example source code file (XShareAuto.java)

This example Java source code file (XShareAuto.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

loading, outputanalyzer, processbuilder, runtimeexception, unable, xshare:dump, xshare\:auto, xshare\:on, xshareauto, xx:+unlockdiagnosticvmoptions

The XShareAuto.java Java example source code

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @ignore 8026154
 * @test
 * @bug 8005933
 * @summary Test that -Xshare:auto uses CDS when explicitly specified with -server.
 * @library /testlibrary
 * @run main XShareAuto
 */

import com.oracle.java.testlibrary.*;

public class XShareAuto {
    public static void main(String[] args) throws Exception {
        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-server", "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./sample.jsa", "-Xshare:dump");
        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        output.shouldContain("Loading classes to share");
        output.shouldHaveExitValue(0);

        pb = ProcessTools.createJavaProcessBuilder(
            "-server", "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./sample.jsa", "-version");
        output = new OutputAnalyzer(pb.start());
        output.shouldNotContain("sharing");
        output.shouldHaveExitValue(0);

        pb = ProcessTools.createJavaProcessBuilder(
            "-server", "-Xshare:auto", "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./sample.jsa", "-version");
        output = new OutputAnalyzer(pb.start());
        try {
            output.shouldContain("sharing");
            output.shouldHaveExitValue(0);
        } catch (RuntimeException e) {
            // If this failed then check that it would also be unable
            // to share even if -Xshare:on is specified.  If so, then
            // return a success status.
            pb = ProcessTools.createJavaProcessBuilder(
                "-server", "-Xshare:on", "-XX:+UnlockDiagnosticVMOptions",
                "-XX:SharedArchiveFile=./sample.jsa", "-version");
            output = new OutputAnalyzer(pb.start());
            output.shouldContain("Unable to use shared archive");
            output.shouldHaveExitValue(1);
        }
    }
}

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