/*

 * 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

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 */

package nsk.jvmti.ClassFileLoadHook;

import java.io.*;

import jdk.test.lib.Utils;

import nsk.share.*;

import nsk.share.jvmti.*;

/**

 * Debuggee class of JVMTI test.

 */

public class classfloadhk002 extends DebugeeClass {

    /** Load native library if required. */

    static {

        System.loadLibrary("classfloadhk002");

    }

    /** Run test from command line. */

    public static void main(String argv[]) {

        argv = nsk.share.jvmti.JVMTITest.commonInit(argv);

        // JCK-compatible exit

        System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);

    }

    /** Run test from JCK-compatible environment. */

    public static int run(String argv[], PrintStream out) {

        return new classfloadhk002().runIt(argv, out);

    }

    /* =================================================================== */

    /* constant names */

    public static final String PACKAGE_NAME = "nsk.jvmti.ClassFileLoadHook";

    public static final String TESTED_CLASS_NAME = PACKAGE_NAME + ".classfloadhk002r";

    /* scaffold objects */

    ArgumentHandler argHandler = null;

    Log log = null;

    long timeout = 0;

    int status = Consts.TEST_PASSED;

    /* original bytecode of tested class */

    public static byte origClassBytes[] = null;

    /** Run debuggee code. */

    public int runIt(String argv[], PrintStream out) {

        argHandler = new ArgumentHandler(argv);

        log = new Log(out, argHandler);

        timeout = argHandler.getWaitTime() * 60 * 1000; // milliseconds

        String args[] = argHandler.getArguments();

        if (args.length <= 0) {

            throw new Failure("Path for tested class file to load not specified");

        }

        log.display("Reading original bytecode of tested class: \n\t" + TESTED_CLASS_NAME);

        try {

            origClassBytes = readBytes(TESTED_CLASS_NAME);

        } catch (IOException e) {

            throw new Failure("IOException in reading bytecode of tested class file:\n\t" + e);

        }

        log.display("Sync: debugee ready to load tested class");

        status = checkStatus(status);

        try {

            log.display("Loading tested class: " + TESTED_CLASS_NAME);

            Class testedClass = Class.forName(TESTED_CLASS_NAME);

        } catch (ClassNotFoundException e) {

            throw new Failure("No tested class file found: \n\t" + e);

        }

        log.display("Sync: tested class loaded");

        status = checkStatus(status);

        return status;

    }

    /** Read classfile for class name. */

    public static byte[] readBytes(String classname) throws IOException {

        String filename = ClassFileFinder.findClassFile(classname, Utils.TEST_CLASS_PATH).toString();

        FileInputStream in = new FileInputStream(filename);

        byte[] bytes = new byte[in.available()];

        in.read(bytes);

        in.close();

        return bytes;

    }

}