/*

 * Copyright (c) 2009, 2017, 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

 * @bug 6589834

 * @summary Safepoint placed between stack pointer increment and decrement leads

 *          to interpreter's stack corruption after deoptimization.

 * @library /test/lib /

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

 *          java.compiler

 *          java.management

 *          jdk.internal.jvmstat/sun.jvmstat.monitor

 *

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *      -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:+VerifyStack

 *      -XX:CompileCommand=compileonly,compiler.c2.cr6589834.InlinedArrayCloneTestCase::*

 *      -XX:CompileCommand=dontinline,compiler.c2.cr6589834.InlinedArrayCloneTestCase::invokeArrayClone

 *      -XX:CompileCommand=inline,compiler.c2.cr6589834.InlinedArrayCloneTestCase::verifyArguments

 *      compiler.c2.cr6589834.Test_ia32

 */

package compiler.c2.cr6589834;

import jdk.test.lib.Asserts;

import sun.hotspot.WhiteBox;

import java.lang.reflect.Method;

public class Test_ia32 {

    private static final int NUM_THREADS

            = Math.min(100, 2 * Runtime.getRuntime().availableProcessors());

    private static final int CLONE_LENGTH = 1000;

    private static WhiteBox wb = WhiteBox.getWhiteBox();

    private final LoadedClass[] ARRAY = new LoadedClass[Test_ia32.CLONE_LENGTH];

    private volatile boolean doSpin = true;

    private volatile boolean testFailed = false;

    public boolean continueExecution() {

        return doSpin;

    }

    public void stopExecution() {

        doSpin = false;

    }

    public boolean isTestFailed() {

        return testFailed;

    }

    public void setTestFailed() {

        this.testFailed = true;

        stopExecution();

    }

    public LoadedClass[] getArray() {

        return ARRAY;

    }

    public void runTest() {

        Thread[] threads = new Thread[Test_ia32.NUM_THREADS];

        Method method;

        try {

            method = InlinedArrayCloneTestCase.class.getDeclaredMethod(

                    "invokeArrayClone", LoadedClass[].class);

        } catch (NoSuchMethodException e) {

            throw new Error("Tested method not found", e);

        }

        Asserts.assertTrue(wb.isMethodCompilable(method),

                "Method " + method.getName() + " should be compilable.");

        for (int i = 0; i < threads.length; i++) {

            threads[i] = new Thread(new InlinedArrayCloneTestCase(this));

            threads[i].start();

        }

        /*

         * Wait until InlinedArrayCloneTestCase::invokeArrayClone is compiled.

         */

        while (!wb.isMethodCompiled(method)) {

            Thread.yield();

        }

        /*

         * Load NotLoadedClass to cause deoptimization of

         * InlinedArrayCloneTestCase::invokeArrayClone due to invalidated

         * dependency.

         */

        try {

            Class.forName(Test_ia32.class.getPackage().getName() + ".NotLoadedClass");

        } catch (ClassNotFoundException e) {

            throw new Error("Unable to load class that invalidates "

                    + "CHA-dependency for method " + method.getName(), e);

        }

        stopExecution();

        for (Thread thread : threads) {

            try {

                thread.join();

            } catch (InterruptedException e) {

                throw new Error("Fail to join thread " + thread, e);

            }

        }

        Asserts.assertFalse(isTestFailed(), "Test failed.");

    }

    public static void main(String[] args) {

        new Test_ia32().runTest();

    }

}

class LoadedClass {

}

@SuppressWarnings("unused")

class NotLoadedClass extends LoadedClass {

}