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