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 Thread; 31 32 class ShenandoahForwardedIsAliveClosure: public BoolObjectClosure { 33 private: 34 ShenandoahMarkingContext* const _mark_context; 35 public: 36 inline ShenandoahForwardedIsAliveClosure(); 37 inline bool do_object_b(oop obj); 38 }; 39 40 class ShenandoahIsAliveClosure: public BoolObjectClosure { 41 private: 42 ShenandoahMarkingContext* const _mark_context; 43 public: 44 inline ShenandoahIsAliveClosure(); 45 inline bool do_object_b(oop obj); 46 }; 47 48 class ShenandoahIsAliveSelector : public StackObj { 49 private: 50 ShenandoahIsAliveClosure _alive_cl; 51 ShenandoahForwardedIsAliveClosure _fwd_alive_cl; 52 public: 53 inline BoolObjectClosure* is_alive_closure(); 54 }; 55 56 class ShenandoahUpdateRefsClosure: public OopClosure { 57 private: 58 ShenandoahHeap* _heap; 59 public: 60 inline ShenandoahUpdateRefsClosure(); 61 inline void do_oop(oop* p); 62 inline void do_oop(narrowOop* p); 63 private: 64 template <class T> 65 inline void do_oop_work(T* p); 66 }; 67 68 class ShenandoahEvacuateUpdateRootsClosure: public BasicOopIterateClosure { 69 private: 70 ShenandoahHeap* _heap; 71 Thread* _thread; 72 public: 73 inline ShenandoahEvacuateUpdateRootsClosure(); 74 inline void do_oop(oop* p); 75 inline void do_oop(narrowOop* p); 76 77 private: 78 template <class T> 79 inline void do_oop_work(T* p); 80 }; 81 82 #ifdef ASSERT 83 class ShenandoahAssertNotForwardedClosure : public OopClosure { 84 private: 85 template <class T> 86 inline void do_oop_work(T* p); 87 88 public: 89 inline void do_oop(narrowOop* p); 90 inline void do_oop(oop* p); 91 }; 92 #endif // ASSERT 93 94 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHCLOSURES_HPP