1 /*
   2  * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_HPP
  25 #define SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_HPP
  26 
  27 #include "gc/shared/workgroup.hpp"
  28 #include "gc/shenandoah/parallelCleaning.hpp"
  29 #include "gc/shenandoah/shenandoahRootProcessor.hpp"
  30 #include "memory/iterator.hpp"
  31 
  32 // Perform weak root cleaning at a pause
  33 template <typename IsAlive, typename KeepAlive>
  34 class ShenandoahParallelWeakRootsCleaningTask : public AbstractGangTask {
  35 protected:
  36   ShenandoahPhaseTimings::Phase _phase;
  37   ShenandoahWeakRoots     _weak_roots;
  38   IsAlive*                _is_alive;
  39   KeepAlive*              _keep_alive;
  40 public:
  41   ShenandoahParallelWeakRootsCleaningTask(ShenandoahPhaseTimings::Phase phase,
  42                                           IsAlive* is_alive,
  43                                           KeepAlive* keep_alive,
  44                                           uint num_workers);
  45   ~ShenandoahParallelWeakRootsCleaningTask();
  46 
  47   void work(uint worker_id);
  48 };
  49 
  50 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_HPP