1 /* 2 * Copyright (c) 2015, 2018, 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 #include "gc/z/zRootsIterator.hpp" 29 30 class ZLoadBarrierOopClosure : public BasicOopIterateClosure { 31 public: 32 virtual void do_oop(oop* p); 33 virtual void do_oop(narrowOop* p); 34 35 #ifdef ASSERT 36 virtual bool should_verify_oops() { 37 return false; 38 } 39 #endif 40 }; 41 42 template <bool finalizable> 43 class ZMarkBarrierOopClosure : public BasicOopIterateClosure { 44 public: 45 ZMarkBarrierOopClosure(); 46 47 virtual void do_oop(oop* p); 48 virtual void do_oop(narrowOop* p); 49 50 #ifdef ASSERT 51 virtual bool should_verify_oops() { 52 return false; 53 } 54 #endif 55 }; 56 57 class ZPhantomIsAliveObjectClosure : public BoolObjectClosure { 58 public: 59 virtual bool do_object_b(oop o); 60 }; 61 62 class ZPhantomKeepAliveOopClosure : public ZRootsIteratorClosure { 63 public: 64 virtual void do_oop(oop* p); 65 virtual void do_oop(narrowOop* p); 66 }; 67 68 class ZPhantomCleanOopClosure : public ZRootsIteratorClosure { 69 public: 70 virtual void do_oop(oop* p); 71 virtual void do_oop(narrowOop* p); 72 }; 73 74 class ZVerifyHeapOopClosure : public BasicOopIterateClosure { 75 public: 76 virtual ReferenceIterationMode reference_iteration_mode(); 77 78 virtual void do_oop(oop* p); 79 virtual void do_oop(narrowOop* p); 80 81 #ifdef ASSERT 82 // Verification handled by the closure itself. 83 virtual bool should_verify_oops() { 84 return false; 85 } 86 #endif 87 }; 88 89 class ZVerifyRootOopClosure : public ZRootsIteratorClosure { 90 public: 91 ZVerifyRootOopClosure(); 92 93 virtual void do_oop(oop* p); 94 virtual void do_oop(narrowOop* p); 95 }; 96 97 class ZVerifyObjectClosure : public ObjectClosure { 98 public: 99 virtual void do_object(oop o); 100 }; 101 102 #endif // SHARE_GC_Z_ZOOPCLOSURES_HPP