/*

 * Copyright (c) 2016, 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.

 */

/*

 * @test SASymbolTableTest

 * @summary Walk symbol table using SA, with and without CDS.

 * @library /testlibrary

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

 *          jdk.hotspot.agent/sun.jvm.hotspot.oops

 *          jdk.hotspot.agent/sun.jvm.hotspot.memory

 *          jdk.hotspot.agent/sun.jvm.hotspot.runtime

 *          jdk.hotspot.agent/sun.jvm.hotspot.tools

 *          java.management

 * @build SASymbolTableTestAgent SASymbolTableTestAttachee jdk.test.lib.*

 * @run main SASymbolTableTest

 */

import jdk.test.lib.*;

/*

 * The purpose of this test is to validate that we can use SA to

 * attach a process and walk its SymbolTable, regardless whether

 * the attachee process runs in CDS mode or not.

 *

 * SASymbolTableTest Just sets up the agent and attachee processes.

 * The SymbolTable walking is done in the SASymbolTableTestAgent class.

 */

public class SASymbolTableTest {

    static String jsaName = "./SASymbolTableTest.jsa";

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

        if (!Platform.shouldSAAttach()) {

            System.out.println("SA attach not expected to work - test skipped.");

            return;

        }

        createArchive();

        run(true);

        run(false);

    }

    private static void createArchive()  throws Exception {

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

            "-XX:+UnlockDiagnosticVMOptions",

            "-XX:SharedArchiveFile=" + jsaName,

            "-Xshare:dump");

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

        output.shouldContain("Loading classes to share");

        output.shouldHaveExitValue(0);

    }

    private static void run(boolean useArchive) throws Exception {

        String flag = useArchive ? "auto" : "off";

        // (1) Launch the attachee process

        ProcessBuilder attachee = ProcessTools.createJavaProcessBuilder(

            "-XX:+UnlockDiagnosticVMOptions",

            "-XX:SharedArchiveFile=" + jsaName,

            "-Xshare:" + flag,

            "-showversion",                // so we can see "sharing" in the output

            "SASymbolTableTestAttachee");

        final Process p = attachee.start();

        // (2) Launch the agent process

        long pid = p.getPid();

        System.out.println("Attaching agent " + pid);

        ProcessBuilder tool = ProcessTools.createJavaProcessBuilder(

            "-XaddExports:jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED",

            "-XaddExports:jdk.hotspot.agent/sun.jvm.hotspot.memory=ALL-UNNAMED",

            "-XaddExports:jdk.hotspot.agent/sun.jvm.hotspot.runtime=ALL-UNNAMED",

            "-XaddExports:jdk.hotspot.agent/sun.jvm.hotspot.tools=ALL-UNNAMED",

            "SASymbolTableTestAgent",

            Long.toString(pid));

        OutputAnalyzer output = ProcessTools.executeProcess(tool);

        System.out.println(output.getOutput());

        output.shouldHaveExitValue(0);

        Thread t = new Thread() {

                public void run() {

                    try {

                        OutputAnalyzer output = new OutputAnalyzer(p);

                        System.out.println("STDOUT[");

                        System.out.print(output.getStdout());

                        System.out.println("]");

                        System.out.println("STDERR[");

                        System.out.print(output.getStderr());

                        System.out.println("]");

                    } catch (Throwable t) {

                        t.printStackTrace();

                    }

                }

            };

        t.start();

        Thread.sleep(2 * 1000);

        p.destroy();

        t.join();

    }

}