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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHCLOSURES_HPP
  24 #define SHARE_GC_SHENANDOAH_SHENANDOAHCLOSURES_HPP
  25 
  26 #include "memory/iterator.hpp"
  27 
  28 class ShenandoahHeap;
  29 class ShenandoahMarkingContext;
  30 class ShenandoahHeapRegionSet;
  31 class Thread;
  32 
  33 class ShenandoahForwardedIsAliveClosure: public BoolObjectClosure {
  34 private:
  35   ShenandoahMarkingContext* const _mark_context;
  36 public:
  37   inline ShenandoahForwardedIsAliveClosure();
  38   inline bool do_object_b(oop obj);
  39 };
  40 
  41 class ShenandoahIsAliveClosure: public BoolObjectClosure {
  42 private:
  43   ShenandoahMarkingContext* const _mark_context;
  44 public:
  45   inline ShenandoahIsAliveClosure();
  46   inline bool do_object_b(oop obj);
  47 };
  48 
  49 class ShenandoahIsAliveSelector : public StackObj {
  50 private:
  51   ShenandoahIsAliveClosure _alive_cl;
  52   ShenandoahForwardedIsAliveClosure _fwd_alive_cl;
  53 public:
  54   inline BoolObjectClosure* is_alive_closure();
  55 };
  56 
  57 class ShenandoahUpdateRefsClosure: public OopClosure {
  58 private:
  59   ShenandoahHeap* _heap;
  60 public:
  61   inline ShenandoahUpdateRefsClosure();
  62   inline void do_oop(oop* p);
  63   inline void do_oop(narrowOop* p);
  64 private:
  65   template <class T>
  66   inline void do_oop_work(T* p);
  67 };
  68 
  69 class ShenandoahTraversalUpdateRefsClosure: public OopClosure {
  70 private:
  71   ShenandoahHeap* const           _heap;
  72   ShenandoahHeapRegionSet* const  _traversal_set;
  73 
  74 public:
  75   inline ShenandoahTraversalUpdateRefsClosure();
  76   inline void do_oop(oop* p);
  77   inline void do_oop(narrowOop* p);
  78 private:
  79   template <class T>
  80   inline void do_oop_work(T* p);
  81 };
  82 
  83 class ShenandoahEvacuateUpdateRootsClosure: public BasicOopIterateClosure {
  84 private:
  85   ShenandoahHeap* _heap;
  86   Thread* _thread;
  87 public:
  88   inline ShenandoahEvacuateUpdateRootsClosure();
  89   inline void do_oop(oop* p);
  90   inline void do_oop(narrowOop* p);
  91 
  92 private:
  93   template <class T>
  94   inline void do_oop_work(T* p);
  95 };
  96 
  97 class ShenandoahEvacUpdateOopStorageRootsClosure : public BasicOopIterateClosure {
  98 private:
  99   ShenandoahHeap* _heap;
 100   Thread* _thread;
 101 public:
 102   inline ShenandoahEvacUpdateOopStorageRootsClosure();
 103   inline void do_oop(oop* p);
 104   inline void do_oop(narrowOop* p);
 105 };
 106 
 107 #ifdef ASSERT
 108 class ShenandoahAssertNotForwardedClosure : public OopClosure {
 109 private:
 110   template <class T>
 111   inline void do_oop_work(T* p);
 112 
 113 public:
 114   inline void do_oop(narrowOop* p);
 115   inline void do_oop(oop* p);
 116 };
 117 #endif // ASSERT
 118 
 119 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHCLOSURES_HPP