/*

 * 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

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 */

#ifndef SHARE_GC_G1_G1PARALLELCLEANING_HPP

#define SHARE_GC_G1_G1PARALLELCLEANING_HPP

#include "gc/shared/parallelCleaning.hpp"

#if INCLUDE_JVMCI

class JVMCICleaningTask : public StackObj {

  volatile int       _cleaning_claimed;

public:

  JVMCICleaningTask();

  // Clean JVMCI metadata handles.

  void work(bool unloading_occurred);

private:

  bool claim_cleaning_task();

};

#endif

// Do cleanup of some weakly held data in the same parallel task.

// Assumes a non-moving context.

class G1ParallelCleaningTask : public AbstractGangTask {

private:

  bool                    _unloading_occurred;

  StringDedupCleaningTask _string_dedup_task;

  CodeCacheUnloadingTask  _code_cache_task;

#if INCLUDE_JVMCI

  JVMCICleaningTask       _jvmci_cleaning_task;

#endif

  KlassCleaningTask       _klass_cleaning_task;

public:

  // The constructor is run in the VMThread.

  G1ParallelCleaningTask(BoolObjectClosure* is_alive,

                         uint num_workers,

                         bool unloading_occurred,

                         bool resize_dedup_table);

  void work(uint worker_id);

};

#endif // SHARE_GC_G1_G1PARALLELCLEANING_HPP