/*

 * Copyright (c) 2019, 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.

 */

import sun.hotspot.WhiteBox;

import java.lang.reflect.Method;

import java.util.HashMap;

public class TestJIT {

    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();

    static void doSomething() {

        HashMap<String,String> map = new HashMap<>();

        for (int i=0; i<400; i++) {

            // Call these methods so that the class/field/method references used

            // by these methods are resolved. This allows C2 to compile more code.

            String x = "Hello" + i;

            map.put(x, x);

            map.get(x);

        }

    }

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

        Method put_method = HashMap.class.getDeclaredMethod("put", Object.class, Object.class);

        Method get_method = HashMap.class.getDeclaredMethod("get", Object.class);

        Method test_method = TestJIT.class.getDeclaredMethod("doSomething");

        doSomething();

        // 4 == CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION => C2

        WHITE_BOX.enqueueMethodForCompilation(get_method, 4);

        WHITE_BOX.enqueueMethodForCompilation(put_method, 4);

        WHITE_BOX.enqueueMethodForCompilation(test_method, 4);

        // Try to start dynamic dumping while the above compilations are still in progesss

        System.exit(0);

    }

}