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 * Copyright (c) 2017, 2018, 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_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 ExtendedOopClosure {

  template <class T> static inline void adjust_pointer(T* p);

public:

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

  virtual void do_oop(oop* p);

  virtual void do_oop(narrowOop* p);

  virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }

};

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