1 /*
2 * Copyright (c) 1997, 2011, 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 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "gc_implementation/shared/markSweep.inline.hpp"
28 #include "oops/arrayKlassKlass.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/handles.inline.hpp"
31
32
33 klassOop arrayKlassKlass::create_klass(TRAPS) {
34 arrayKlassKlass o;
35 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
36 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
37 // Make sure size calculation is right
38 assert(k()->size() == align_object_size(header_size()), "wrong size for object");
39 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror, make links
40 return k();
41 }
42
43 bool arrayKlassKlass::oop_is_parsable(oop obj) const {
44 assert(obj->is_klass(), "must be klass");
45 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
46 return (!ak->null_vtbl()) && ak->object_is_parsable();
47 }
48
49 void arrayKlassKlass::oop_follow_contents(oop obj) {
50 assert(obj->is_klass(), "must be klass");
51 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
52 MarkSweep::mark_and_push(ak->adr_component_mirror());
53 MarkSweep::mark_and_push(ak->adr_lower_dimension());
54 MarkSweep::mark_and_push(ak->adr_higher_dimension());
55 {
56 HandleMark hm;
57 ak->vtable()->oop_follow_contents();
58 }
59 klassKlass::oop_follow_contents(obj);
60 }
61
62 #ifndef SERIALGC
63 void arrayKlassKlass::oop_follow_contents(ParCompactionManager* cm,
64 oop obj) {
65 assert(obj->is_klass(), "must be klass");
66 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
67 PSParallelCompact::mark_and_push(cm, ak->adr_component_mirror());
68 PSParallelCompact::mark_and_push(cm, ak->adr_lower_dimension());
69 PSParallelCompact::mark_and_push(cm, ak->adr_higher_dimension());
70 {
71 HandleMark hm;
72 ak->vtable()->oop_follow_contents(cm);
73 }
74 klassKlass::oop_follow_contents(cm, obj);
75 }
76 #endif // SERIALGC
77
78
79 int arrayKlassKlass::oop_adjust_pointers(oop obj) {
80 assert(obj->is_klass(), "must be klass");
81 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
82 MarkSweep::adjust_pointer(ak->adr_component_mirror());
83 MarkSweep::adjust_pointer(ak->adr_lower_dimension());
84 MarkSweep::adjust_pointer(ak->adr_higher_dimension());
85 {
86 HandleMark hm;
87 ak->vtable()->oop_adjust_pointers();
88 }
89 return klassKlass::oop_adjust_pointers(obj);
90 }
91
92
93 int arrayKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
94 assert(obj->is_klass(), "must be klass");
95 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
96 blk->do_oop(ak->adr_component_mirror());
97 blk->do_oop(ak->adr_lower_dimension());
98 blk->do_oop(ak->adr_higher_dimension());
99 ak->vtable()->oop_oop_iterate(blk);
100 return klassKlass::oop_oop_iterate(obj, blk);
101 }
102
103
104 int arrayKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
105 assert(obj->is_klass(), "must be klass");
106 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
107 oop* addr;
108 addr = ak->adr_component_mirror();
109 if (mr.contains(addr)) { blk->do_oop(addr); }
110 addr = ak->adr_lower_dimension();
111 if (mr.contains(addr)) { blk->do_oop(addr); }
112 addr = ak->adr_higher_dimension();
113 if (mr.contains(addr)) { blk->do_oop(addr); }
114 ak->vtable()->oop_oop_iterate_m(blk, mr);
115 return klassKlass::oop_oop_iterate_m(obj, blk, mr);
116 }
117
118 #ifndef SERIALGC
119 void arrayKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
120 assert(obj->blueprint()->oop_is_arrayKlass(),"must be an array klass");
121 }
122
123 int arrayKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
124 assert(obj->is_klass(), "must be klass");
125 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
126 PSParallelCompact::adjust_pointer(ak->adr_component_mirror());
127 PSParallelCompact::adjust_pointer(ak->adr_lower_dimension());
128 PSParallelCompact::adjust_pointer(ak->adr_higher_dimension());
129 {
130 HandleMark hm;
131 ak->vtable()->oop_update_pointers(cm);
132 }
133 return klassKlass::oop_update_pointers(cm, obj);
134 }
135 #endif // SERIALGC
136
137 // Printing
138
139 void arrayKlassKlass::oop_print_on(oop obj, outputStream* st) {
140 assert(obj->is_klass(), "must be klass");
141 klassKlass::oop_print_on(obj, st);
142 }
143
144 void arrayKlassKlass::oop_print_value_on(oop obj, outputStream* st) {
145 assert(obj->is_klass(), "must be klass");
146 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
147 for(int index = 0; index < ak->dimension(); index++) {
148 st->print("[]");
149 }
150 }
151
152
153 const char* arrayKlassKlass::internal_name() const {
154 return "{array class}";
155 }
156
157 void arrayKlassKlass::oop_verify_on(oop obj, outputStream* st) {
158 klassKlass::oop_verify_on(obj, st);
159
160 arrayKlass* ak = arrayKlass::cast(klassOop(obj));
161 if (!obj->partially_loaded()) {
162 if (ak->component_mirror() != NULL)
163 guarantee(ak->component_mirror()->klass(), "should have a class");
164 if (ak->lower_dimension() != NULL)
165 guarantee(ak->lower_dimension()->klass(), "should have a class");
166 if (ak->higher_dimension() != NULL)
167 guarantee(ak->higher_dimension()->klass(), "should have a class");
168 }
169 }