/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8067247

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

 * @library /test/lib

 *

 * @run main/bootclasspath/othervm -Xcomp -Xbatch

 *      -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *      -XX:CompileCommand=compileonly,compiler.jsr292.InvokerGC::test

 *      compiler.jsr292.InvokerGC

 */

package compiler.jsr292;

import sun.hotspot.WhiteBox;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import java.lang.invoke.MethodType;

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");

    }

}