view src/hotspot/share/gc/g1/g1FullGCOopClosures.hpp @ 49273:216c2aabbf1f

8196602: Change HeapRegionClosure to comply to naming conventions Reviewed-by: kbarrett, sjohanss
author tschatzl
date Fri, 09 Feb 2018 11:51:40 +0100
parents
children acffe6ff3ae7
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/*
 * 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.
 *
 * 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.
 *
 */

#ifndef SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP
#define SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP

#include "memory/iterator.hpp"
#include "memory/universe.hpp"

class G1CollectedHeap;
class G1FullCollector;
class G1CMBitMap;
class G1FullGCMarker;

// Below are closures used by the G1 Full GC.
class G1IsAliveClosure : public BoolObjectClosure {
  G1CMBitMap* _bitmap;

public:
  G1IsAliveClosure(G1CMBitMap* bitmap) : _bitmap(bitmap) { }

  virtual bool do_object_b(oop p);
};

class G1FullKeepAliveClosure: public OopClosure {
  G1FullGCMarker* _marker;
  template <class T>
  inline void do_oop_work(T* p);

public:
  G1FullKeepAliveClosure(G1FullGCMarker* pm) : _marker(pm) { }

  virtual void do_oop(oop* p);
  virtual void do_oop(narrowOop* p);
};

class G1MarkAndPushClosure : public ExtendedOopClosure {
  G1FullGCMarker* _marker;
  uint _worker_id;

public:
  G1MarkAndPushClosure(uint worker, G1FullGCMarker* marker, ReferenceProcessor* ref) :
    _marker(marker),
    _worker_id(worker),
    ExtendedOopClosure(ref) { }

  template <class T> inline void do_oop_nv(T* p);
  virtual void do_oop(oop* p);
  virtual void do_oop(narrowOop* p);

  virtual bool do_metadata();
  bool do_metadata_nv();

  virtual void do_klass(Klass* k);
  void do_klass_nv(Klass* k);

  virtual void do_cld(ClassLoaderData* cld);
  void do_cld_nv(ClassLoaderData* cld);
};

class G1AdjustClosure : public OopClosure {
public:
  template <class T> static inline oop adjust_pointer(T* p);
  virtual void do_oop(oop* p);
  virtual void do_oop(narrowOop* p);
};

class G1AdjustAndRebuildClosure : public ExtendedOopClosure {
  uint _worker_id;
  size_t _compaction_delta;
  G1CollectedHeap* _g1h;

  inline size_t calculate_compaction_delta(oop current, oop forwardee);
  template <class T> inline T* add_compaction_delta(T* p);

public:
  G1AdjustAndRebuildClosure(uint worker_id);

  void update_compaction_delta(oop obj);

  template <class T> inline void add_reference(T* from_field, oop reference, uint worker_id);
  template <class T> void do_oop_nv(T* p);
  virtual void do_oop(oop* p);
  virtual void do_oop(narrowOop* p);

  virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
};

class G1AdjustObjectClosure {
  G1AdjustAndRebuildClosure* _closure;

public:
  G1AdjustObjectClosure(G1AdjustAndRebuildClosure* cl) : _closure(cl) { }

  inline int adjust_object(oop obj);
};

class G1VerifyOopClosure: public OopClosure {
private:
  G1CollectedHeap* _g1h;
  bool             _failures;
  oop              _containing_obj;
  VerifyOption     _verify_option;

public:
  int _cc;
  G1VerifyOopClosure(VerifyOption option);

  void set_containing_obj(oop obj) {
    _containing_obj = obj;
  }

  bool failures() { return _failures; }
  void print_object(outputStream* out, oop obj);

  template <class T> void do_oop_nv(T* p);

  void do_oop(oop* p)       { do_oop_nv(p); }
  void do_oop(narrowOop* p) { do_oop_nv(p); }
};

class G1FollowStackClosure: public VoidClosure {
  G1FullGCMarker* _marker;

public:
  G1FollowStackClosure(G1FullGCMarker* marker) : _marker(marker) {}
  virtual void do_void();
};

#endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP