jdk-24/test/hotspot/jtreg/vmTestbase/nsk/jvmti/GetStackTrace/getstacktr007.java

/*
 * Copyright (c) 2003, 2018, 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.
 */

package nsk.jvmti.GetStackTrace;

import java.io.*;

public class getstacktr007 {

    final static int FAILED = 2;
    final static int JCK_STATUS_BASE = 95;
    final static String fileName =
        TestThread.class.getName().replace('.', File.separatorChar) + ".class";

    static {
        try {
            System.loadLibrary("getstacktr007");
        } catch (UnsatisfiedLinkError ule) {
            System.err.println("Could not load getstacktr007 library");
            System.err.println("java.library.path:"
                + System.getProperty("java.library.path"));
            throw ule;
        }
    }

    native static void getReady(Class clazz, byte bytes[]);
    native static int getRes();

    public static void main(String args[]) {
        args = nsk.share.jvmti.JVMTITest.commonInit(args);

        // produce JCK-like exit status.
        System.exit(run(args, System.out) + JCK_STATUS_BASE);
    }

    public static int run(String args[], PrintStream out) {
        ClassLoader cl = getstacktr007.class.getClassLoader();
        TestThread thr = new TestThread();

        // Read data from class
        byte[] bytes;
        try {
            InputStream in = cl.getSystemResourceAsStream(fileName);
            if (in == null) {
                out.println("# Class file \"" + fileName + "\" not found");
                return FAILED;
            }
            bytes = new byte[in.available()];
            in.read(bytes);
            in.close();
        } catch (Exception ex) {
            out.println("# Unexpected exception while reading class file:");
            out.println("# " + ex);
            return FAILED;
        }

        getReady(TestThread.class, bytes);

        thr.start();
        try {
            thr.join();
        } catch (InterruptedException ex) {
            out.println("# Unexpected " + ex);
            return FAILED;
        }

        return getRes();
    }

    static class TestThread extends Thread {
        public void run() {
            chain1();
        }

        void chain1() {
            chain2();
        }

        void chain2() {
            chain3();
        }

        void chain3() {
            chain4();
        }

        void chain4() {
            checkPoint();
        }

        // dummy method to be breakpointed in agent
        void checkPoint() {
        }
    }
}