/*

 * 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

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 */

/*

 * @test

 * @bug 8067247

 * @library /test/lib /compiler/whitebox /

 * @run main/bootclasspath -Xcomp -Xbatch

 *      -XX:CompileCommand=compileonly,InvokerGC::test

 *      -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *      InvokerGC

 */

import java.lang.invoke.*;

import sun.hotspot.WhiteBox;

public class InvokerGC {

    static final WhiteBox WB = WhiteBox.getWhiteBox();

    static MethodHandle mh;

    static {

        try {

            mh = MethodHandles.lookup().findStatic(InvokerGC.class, "dummy", MethodType.methodType(void.class));

        } catch (Exception e) {

            throw new Error(e);

        }

    }

    static void dummy() {}

    static void test() {

        try {

            mh.invoke();

        } catch (Throwable e) {

            throw new Error(e);

        }

    }

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

        mh.invoke(); // Pre-generate an invoker for ()V signature

        test(); // trigger method compilation

        test();

        WB.fullGC(); // WB.fullGC has always clear softref policy.

        test();

        WB.clearInlineCaches(true); // Preserve static stubs.

        test(); // Trigger call site re-resolution. Invoker LambdaForm should stay the same.

        System.out.println("TEST PASSED");

    }

}