/*

 * Copyright (c) 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.

 *

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 */

/*

 * @test

 * @bug 8174749

 * @summary MemberNameTable should reuse entries

 * @library /test/lib

 * @run main MemberNameLeak

 */

import java.lang.invoke.*;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

public class MemberNameLeak {

    static class Leak {

      public void callMe() {

      }

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

        Leak leak = new Leak();

        for (int i = 0; i < 10; i++) {

          MethodHandles.Lookup lookup = MethodHandles.lookup();

          MethodType mt = MethodType.fromMethodDescriptorString("()V", Leak.class.getClassLoader());

          // findSpecial leaks some native mem

          MethodHandle mh = lookup.findSpecial(Leak.class, "callMe", mt, Leak.class);

          mh.invokeExact(leak);

        }

        System.gc();  // make mh unused

      }

    }

    public static void test(String gc) throws Throwable {

       // Run this Leak class with logging

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

                                      "-Xlog:membername+table=trace",

                                      gc, Leak.class.getName());

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldContain("ResolvedMethod entry added for MemberNameLeak$Leak.callMe()V");

        output.shouldContain("ResolvedMethod entry found for MemberNameLeak$Leak.callMe()V");

        output.shouldContain("ResolvedMethod entry removed for MemberNameLeak$Leak.callMe()V");

        output.shouldHaveExitValue(0);

    }

    public static void main(java.lang.String[] unused) throws Throwable {

        test("-XX:+UseG1GC");

        test("-XX:+UseParallelGC");

        test("-XX:+UseSerialGC");

        test("-XX:+UseConcMarkSweepGC");

    }

}