1 /*
2 * Copyright (c) 2014, 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
25 #ifndef SHARE_VM_MEMORY_ITERATOR_INLINE_HPP
26 #define SHARE_VM_MEMORY_ITERATOR_INLINE_HPP
27
28 #include "classfile/classLoaderData.hpp"
29 #include "memory/iterator.hpp"
30 #include "oops/klass.hpp"
31 #include "oops/instanceKlass.inline.hpp"
32 #include "oops/instanceMirrorKlass.inline.hpp"
33 #include "oops/instanceClassLoaderKlass.inline.hpp"
34 #include "oops/instanceRefKlass.inline.hpp"
35 #include "oops/objArrayKlass.inline.hpp"
36 #include "oops/typeArrayKlass.inline.hpp"
37 #include "utilities/debug.hpp"
38
39 inline void MetadataAwareOopClosure::do_cld_nv(ClassLoaderData* cld) {
40 assert(_klass_closure._oop_closure == this, "Must be");
41
42 bool claim = true; // Must claim the class loader data before processing.
43 cld->oops_do(_klass_closure._oop_closure, &_klass_closure, claim);
44 }
45
46 inline void MetadataAwareOopClosure::do_klass_nv(Klass* k) {
47 ClassLoaderData* cld = k->class_loader_data();
48 do_cld_nv(cld);
49 }
50
51 inline void MetadataAwareOopClosure::do_klass(Klass* k) {
52 do_klass_nv(k);
53 }
54
55 #ifdef ASSERT
56 // This verification is applied to all visited oops.
57 // The closures can turn is off by overriding should_verify_oops().
58 template <typename T>
59 void ExtendedOopClosure::verify(T* p) {
60 if (should_verify_oops()) {
61 T heap_oop = oopDesc::load_heap_oop(p);
62 if (!oopDesc::is_null(heap_oop)) {
63 oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
64 assert(Universe::heap()->is_in_closed_subset(o),
65 err_msg("should be in closed *p " PTR_FORMAT " " PTR_FORMAT, p2i(p), p2i(o)));
66 }
67 }
68 }
69 #endif
70
71 // Implementation of the non-virtual do_oop dispatch.
72
73 template <class OopClosureType, typename T>
74 inline void Devirtualizer<true>::do_oop(OopClosureType* closure, T* p) {
75 debug_only(closure->verify(p));
76 closure->do_oop_nv(p);
77 }
78 template <class OopClosureType>
79 inline void Devirtualizer<true>::do_klass(OopClosureType* closure, Klass* k) {
80 closure->do_klass_nv(k);
81 }
82 template <class OopClosureType>
83 void Devirtualizer<true>::do_cld(OopClosureType* closure, ClassLoaderData* cld) {
84 closure->do_cld_nv(cld);
85 }
86 template <class OopClosureType>
87 inline bool Devirtualizer<true>::do_metadata(OopClosureType* closure) {
88 // Make sure the non-virtual and the virtual versions match.
89 assert(closure->do_metadata_nv() == closure->do_metadata(), "Inconsistency in do_metadata");
90 return closure->do_metadata_nv();
91 }
92
93 // Implementation of the virtual do_oop dispatch.
94
95 template <class OopClosureType, typename T>
96 void Devirtualizer<false>::do_oop(OopClosureType* closure, T* p) {
97 debug_only(closure->verify(p));
98 closure->do_oop(p);
99 }
100 template <class OopClosureType>
101 void Devirtualizer<false>::do_klass(OopClosureType* closure, Klass* k) {
102 closure->do_klass(k);
103 }
104 template <class OopClosureType>
105 void Devirtualizer<false>::do_cld(OopClosureType* closure, ClassLoaderData* cld) {
106 closure->do_cld(cld);
107 }
108 template <class OopClosureType>
109 bool Devirtualizer<false>::do_metadata(OopClosureType* closure) {
110 return closure->do_metadata();
111 }
112
113 // The list of all "specializable" oop_oop_iterate function definitions.
114 #define ALL_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
115 ALL_INSTANCE_KLASS_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix) \
116 ALL_INSTANCE_REF_KLASS_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix) \
117 ALL_INSTANCE_MIRROR_KLASS_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix) \
118 ALL_INSTANCE_CLASS_LOADER_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
119 ALL_OBJ_ARRAY_KLASS_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix) \
120 ALL_TYPE_ARRAY_KLASS_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix)
121
122 #endif // SHARE_VM_MEMORY_ITERATOR_INLINE_HPP