1/*
2 * Copyright (c) 2017, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25#ifndef SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP
26#define SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP
27
28#include "gc/shared/verifyOption.hpp"
29#include "memory/iterator.hpp"
30
31class G1CollectedHeap;
32class G1FullCollector;
33class G1CMBitMap;
34class G1FullGCMarker;
35
36// Below are closures used by the G1 Full GC.
37class G1IsAliveClosure : public BoolObjectClosure {
38 G1CMBitMap* _bitmap;
39
40public:
41 G1IsAliveClosure(G1CMBitMap* bitmap) : _bitmap(bitmap) { }
42
43 virtual bool do_object_b(oop p);
44};
45
46class G1FullKeepAliveClosure: public OopClosure {
47 G1FullGCMarker* _marker;
48 template <class T>
49 inline void do_oop_work(T* p);
50
51public:
52 G1FullKeepAliveClosure(G1FullGCMarker* pm) : _marker(pm) { }
53
54 virtual void do_oop(oop* p);
55 virtual void do_oop(narrowOop* p);
56};
57
58class G1MarkAndPushClosure : public OopIterateClosure {
59 G1FullGCMarker* _marker;
60 uint _worker_id;
61
62public:
63 G1MarkAndPushClosure(uint worker, G1FullGCMarker* marker, ReferenceDiscoverer* ref) :
64 OopIterateClosure(ref),
65 _marker(marker),
66 _worker_id(worker) { }
67
68 template <class T> inline void do_oop_work(T* p);
69 virtual void do_oop(oop* p);
70 virtual void do_oop(narrowOop* p);
71
72 virtual bool do_metadata();
73 virtual void do_klass(Klass* k);
74 virtual void do_cld(ClassLoaderData* cld);
75};
76
77class G1AdjustClosure : public BasicOopIterateClosure {
78 template <class T> static inline void adjust_pointer(T* p);
79public:
80 template <class T> void do_oop_work(T* p) { adjust_pointer(p); }
81 virtual void do_oop(oop* p);
82 virtual void do_oop(narrowOop* p);
83
84 virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
85};
86
87class G1VerifyOopClosure: public BasicOopIterateClosure {
88private:
89 G1CollectedHeap* _g1h;
90 bool _failures;
91 oop _containing_obj;
92 VerifyOption _verify_option;
93
94public:
95 int _cc;
96 G1VerifyOopClosure(VerifyOption option);
97
98 void set_containing_obj(oop obj) {
99 _containing_obj = obj;
100 }
101
102 bool failures() { return _failures; }
103 void print_object(outputStream* out, oop obj);
104
105 template <class T> void do_oop_work(T* p);
106
107 void do_oop(oop* p) { do_oop_work(p); }
108 void do_oop(narrowOop* p) { do_oop_work(p); }
109};
110
111class G1FollowStackClosure: public VoidClosure {
112 G1FullGCMarker* _marker;
113
114public:
115 G1FollowStackClosure(G1FullGCMarker* marker) : _marker(marker) {}
116 virtual void do_void();
117};
118
119#endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_HPP
120