1 /*
   2  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #ifndef SHARE_GC_Z_ZOOPCLOSURES_HPP
  25 #define SHARE_GC_Z_ZOOPCLOSURES_HPP
  26 
  27 #include "memory/iterator.hpp"
  28 
  29 class ZLoadBarrierOopClosure : public ExtendedOopClosure {
  30 public:
  31   void do_oop_nv(oop* p);
  32   void do_oop_nv(narrowOop* p);
  33 
  34   virtual void do_oop(oop* p);
  35   virtual void do_oop(narrowOop* p);
  36 
  37 #ifdef ASSERT
  38   virtual bool should_verify_oops() {
  39     return false;
  40   }
  41 #endif
  42 };
  43 
  44 class ZMarkRootOopClosure : public OopClosure {
  45 public:
  46   virtual void do_oop(oop* p);
  47   virtual void do_oop(narrowOop* p);
  48 };
  49 
  50 class ZRelocateRootOopClosure : public OopClosure {
  51 public:
  52   virtual void do_oop(oop* p);
  53   virtual void do_oop(narrowOop* p);
  54 };
  55 
  56 template <bool finalizable>
  57 class ZMarkBarrierOopClosure : public ExtendedOopClosure {
  58 public:
  59   ZMarkBarrierOopClosure();
  60 
  61   void do_oop_nv(oop* p);
  62   void do_oop_nv(narrowOop* p);
  63 
  64   virtual void do_oop(oop* p);
  65   virtual void do_oop(narrowOop* p);
  66 
  67 #ifdef ASSERT
  68   virtual bool should_verify_oops() {
  69     return false;
  70   }
  71 #endif
  72 };
  73 
  74 class ZPhantomIsAliveObjectClosure : public BoolObjectClosure {
  75 public:
  76   virtual bool do_object_b(oop o);
  77 };
  78 
  79 class ZPhantomKeepAliveOopClosure : public OopClosure {
  80 public:
  81   virtual void do_oop(oop* p);
  82   virtual void do_oop(narrowOop* p);
  83 };
  84 
  85 class ZPhantomCleanOopClosure : public OopClosure {
  86 private:
  87   void clean(volatile oop* p);
  88 
  89 public:
  90   virtual void do_oop(oop* p);
  91   virtual void do_oop(narrowOop* p);
  92 };
  93 
  94 class ZVerifyHeapOopClosure : public ExtendedOopClosure {
  95 private:
  96   const oop _base;
  97 
  98 public:
  99   ZVerifyHeapOopClosure(oop base);
 100 
 101   virtual void do_oop(oop* p);
 102   virtual void do_oop(narrowOop* p);
 103 
 104 #ifdef ASSERT
 105   // Verification handled by the closure itself.
 106   virtual bool should_verify_oops() {
 107     return false;
 108   }
 109 #endif
 110 };
 111 
 112 class ZVerifyRootOopClosure : public OopClosure {
 113 public:
 114   virtual void do_oop(oop* p);
 115   virtual void do_oop(narrowOop* p);
 116 };
 117 
 118 class ZVerifyObjectClosure : public ObjectClosure {
 119 public:
 120   virtual void do_object(oop o);
 121 };
 122 
 123 #endif // SHARE_GC_Z_ZOOPCLOSURES_HPP