src/hotspot/share/gc/shenandoah/shenandoahSATBMarkQueueSet.hpp
author kbarrett
Wed, 26 Jun 2019 13:18:38 -0400
changeset 55498 e64383344f14
parent 54970 76d3d96a8bc2
child 58059 baa4dd528de0
permissions -rw-r--r--
8225255: Make SATB qset lock-free Summary: Refactor PtrQueueSet, use lock-free stack for SATB completed buffers Reviewed-by: tschatzl, shade
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/*
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 * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHSATBMARKQUEUESET_HPP
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#define SHARE_GC_SHENANDOAH_SHENANDOAHSATBMARKQUEUESET_HPP
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#include "gc/shared/satbMarkQueue.hpp"
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#include "gc/shenandoah/shenandoahHeap.hpp"
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#include "runtime/mutex.hpp"
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#include "runtime/thread.hpp"
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class ShenandoahSATBMarkQueue: public SATBMarkQueue {
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protected:
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  virtual void handle_completed_buffer();
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public:
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  ShenandoahSATBMarkQueue(SATBMarkQueueSet* qset) : SATBMarkQueue(qset) {}
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};
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class ShenandoahSATBMarkQueueSet : public SATBMarkQueueSet {
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private:
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  ShenandoahHeap* _heap;
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  BufferNode::Allocator _satb_mark_queue_buffer_allocator;
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  ShenandoahSATBMarkQueueSet();
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  void initialize(ShenandoahHeap* const heap,
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                  int process_completed_threshold,
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                  uint buffer_enqueue_threshold_percentage);
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  virtual SATBMarkQueue& satb_queue_for_thread(Thread* const t) const;
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  virtual void filter(SATBMarkQueue* queue);
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};
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#endif // SHARE_GC_SHENANDOAH_SHENANDOAHSATBMARKQUEUESET_HPP