Mercurial > hg > graal-jvmci-8

annotate src/share/vm/oops/klass.cpp @ 20197:ce8f6bb717c9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8042195: Introduce umbrella header orderAccess.inline.hpp. Reviewed-by: dholmes, kvn, stefank, twisti
author goetz
date Tue, 29 Apr 2014 15:17:27 +0200
parents 7384f6a12fc1
children 76b588255908
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1 /*
17674
85318d1fe8fe 8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents: 17663
diff changeset
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load
duke
parents:
diff changeset
4 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load
duke
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load
duke
parents:
diff changeset
7 * published by the Free Software Foundation.
a61af66fc99e Initial load
duke
parents:
diff changeset
8 *
a61af66fc99e Initial load
duke
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load
duke
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load
duke
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load
duke
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load
duke
parents:
diff changeset
13 * accompanied this code).
a61af66fc99e Initial load
duke
parents:
diff changeset
14 *
a61af66fc99e Initial load
duke
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load
duke
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load
duke
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load
duke
parents:
diff changeset
18 *
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1155
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1155
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1155
diff changeset
21 * questions.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
22 *
a61af66fc99e Initial load
duke
parents:
diff changeset
23 */
a61af66fc99e Initial load
duke
parents:
diff changeset
24
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
25 #include "precompiled.hpp"
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
26 #include "classfile/javaClasses.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
27 #include "classfile/dictionary.hpp"
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
28 #include "classfile/systemDictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
29 #include "classfile/vmSymbols.hpp"
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
30 #include "gc_implementation/shared/markSweep.inline.hpp"
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
31 #include "gc_interface/collectedHeap.inline.hpp"
7956
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
32 #include "memory/heapInspection.hpp"
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
33 #include "memory/metadataFactory.hpp"
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
34 #include "memory/oopFactory.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
35 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
36 #include "oops/instanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
37 #include "oops/klass.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1681
diff changeset
38 #include "oops/oop.inline2.hpp"
20197
ce8f6bb717c9 8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
parents: 17935
diff changeset
39 #include "runtime/atomic.inline.hpp"
ce8f6bb717c9 8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
parents: 17935
diff changeset
40 #include "runtime/orderAccess.inline.hpp"
10405
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 10376
diff changeset
41 #include "trace/traceMacros.hpp"
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
42 #include "utilities/stack.hpp"
8001
db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 7185
diff changeset
43 #include "utilities/macros.hpp"
db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 7185
diff changeset
44 #if INCLUDE_ALL_GCS
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
45 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
46 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
47 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
8001
db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 7185
diff changeset
48 #endif // INCLUDE_ALL_GCS
0
a61af66fc99e Initial load
duke
parents:
diff changeset
49
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
50 void Klass::set_name(Symbol* n) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
51 _name = n;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
52 if (_name != NULL) _name->increment_refcount();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
53 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
54
10265
92ef81e2f571 8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents: 8751
diff changeset
55 bool Klass::is_subclass_of(const Klass* k) const {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
56 // Run up the super chain and check
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
57 if (this == k) return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
58
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
59 Klass* t = const_cast<Klass*>(this)->super();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
60
a61af66fc99e Initial load
duke
parents:
diff changeset
61 while (t != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
62 if (t == k) return true;
6983
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
63 t = t->super();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
64 }
a61af66fc99e Initial load
duke
parents:
diff changeset
65 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
66 }
a61af66fc99e Initial load
duke
parents:
diff changeset
67
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
68 bool Klass::search_secondary_supers(Klass* k) const {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
69 // Put some extra logic here out-of-line, before the search proper.
a61af66fc99e Initial load
duke
parents:
diff changeset
70 // This cuts down the size of the inline method.
a61af66fc99e Initial load
duke
parents:
diff changeset
71
a61af66fc99e Initial load
duke
parents:
diff changeset
72 // This is necessary, since I am never in my own secondary_super list.
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
73 if (this == k)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
74 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
75 // Scan the array-of-objects for a match
a61af66fc99e Initial load
duke
parents:
diff changeset
76 int cnt = secondary_supers()->length();
a61af66fc99e Initial load
duke
parents:
diff changeset
77 for (int i = 0; i < cnt; i++) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
78 if (secondary_supers()->at(i) == k) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
79 ((Klass*)this)->set_secondary_super_cache(k);
a61af66fc99e Initial load
duke
parents:
diff changeset
80 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
81 }
a61af66fc99e Initial load
duke
parents:
diff changeset
82 }
a61af66fc99e Initial load
duke
parents:
diff changeset
83 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
84 }
a61af66fc99e Initial load
duke
parents:
diff changeset
85
a61af66fc99e Initial load
duke
parents:
diff changeset
86 // Return self, except for abstract classes with exactly 1
a61af66fc99e Initial load
duke
parents:
diff changeset
87 // implementor. Then return the 1 concrete implementation.
a61af66fc99e Initial load
duke
parents:
diff changeset
88 Klass *Klass::up_cast_abstract() {
a61af66fc99e Initial load
duke
parents:
diff changeset
89 Klass *r = this;
a61af66fc99e Initial load
duke
parents:
diff changeset
90 while( r->is_abstract() ) { // Receiver is abstract?
a61af66fc99e Initial load
duke
parents:
diff changeset
91 Klass *s = r->subklass(); // Check for exactly 1 subklass
a61af66fc99e Initial load
duke
parents:
diff changeset
92 if( !s || s->next_sibling() ) // Oops; wrong count; give up
a61af66fc99e Initial load
duke
parents:
diff changeset
93 return this; // Return 'this' as a no-progress flag
a61af66fc99e Initial load
duke
parents:
diff changeset
94 r = s; // Loop till find concrete class
a61af66fc99e Initial load
duke
parents:
diff changeset
95 }
a61af66fc99e Initial load
duke
parents:
diff changeset
96 return r; // Return the 1 concrete class
a61af66fc99e Initial load
duke
parents:
diff changeset
97 }
a61af66fc99e Initial load
duke
parents:
diff changeset
98
605
98cb887364d3 6810672: Comment typos
twisti
parents: 431
diff changeset
99 // Find LCA in class hierarchy
0
a61af66fc99e Initial load
duke
parents:
diff changeset
100 Klass *Klass::LCA( Klass *k2 ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
101 Klass *k1 = this;
a61af66fc99e Initial load
duke
parents:
diff changeset
102 while( 1 ) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
103 if( k1->is_subtype_of(k2) ) return k2;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
104 if( k2->is_subtype_of(k1) ) return k1;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
105 k1 = k1->super();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
106 k2 = k2->super();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
107 }
a61af66fc99e Initial load
duke
parents:
diff changeset
108 }
a61af66fc99e Initial load
duke
parents:
diff changeset
109
a61af66fc99e Initial load
duke
parents:
diff changeset
110
a61af66fc99e Initial load
duke
parents:
diff changeset
111 void Klass::check_valid_for_instantiation(bool throwError, TRAPS) {
a61af66fc99e Initial load
duke
parents:
diff changeset
112 ResourceMark rm(THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
113 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError()
a61af66fc99e Initial load
duke
parents:
diff changeset
114 : vmSymbols::java_lang_InstantiationException(), external_name());
a61af66fc99e Initial load
duke
parents:
diff changeset
115 }
a61af66fc99e Initial load
duke
parents:
diff changeset
116
a61af66fc99e Initial load
duke
parents:
diff changeset
117
a61af66fc99e Initial load
duke
parents:
diff changeset
118 void Klass::copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS) {
a61af66fc99e Initial load
duke
parents:
diff changeset
119 THROW(vmSymbols::java_lang_ArrayStoreException());
a61af66fc99e Initial load
duke
parents:
diff changeset
120 }
a61af66fc99e Initial load
duke
parents:
diff changeset
121
a61af66fc99e Initial load
duke
parents:
diff changeset
122
a61af66fc99e Initial load
duke
parents:
diff changeset
123 void Klass::initialize(TRAPS) {
a61af66fc99e Initial load
duke
parents:
diff changeset
124 ShouldNotReachHere();
a61af66fc99e Initial load
duke
parents:
diff changeset
125 }
a61af66fc99e Initial load
duke
parents:
diff changeset
126
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
127 bool Klass::compute_is_subtype_of(Klass* k) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
128 assert(k->is_klass(), "argument must be a class");
a61af66fc99e Initial load
duke
parents:
diff changeset
129 return is_subclass_of(k);
a61af66fc99e Initial load
duke
parents:
diff changeset
130 }
a61af66fc99e Initial load
duke
parents:
diff changeset
131
a61af66fc99e Initial load
duke
parents:
diff changeset
132
17889
386dd1c71858 8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
parents: 17883
diff changeset
133 Method* Klass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
134 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
135 tty->print_cr("Error: uncached_lookup_method called on a klass oop."
a61af66fc99e Initial load
duke
parents:
diff changeset
136 " Likely error: reflection method does not correctly"
a61af66fc99e Initial load
duke
parents:
diff changeset
137 " wrap return value in a mirror object.");
a61af66fc99e Initial load
duke
parents:
diff changeset
138 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
139 ShouldNotReachHere();
a61af66fc99e Initial load
duke
parents:
diff changeset
140 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
141 }
a61af66fc99e Initial load
duke
parents:
diff changeset
142
12146
9758d9f36299 8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
coleenp
parents: 11096
diff changeset
143 void* Klass::operator new(size_t size, ClassLoaderData* loader_data, size_t word_size, TRAPS) throw() {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
144 return Metaspace::allocate(loader_data, word_size, /*read_only*/false,
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10343
diff changeset
145 MetaspaceObj::ClassType, CHECK_NULL);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
146 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
147
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
148 Klass::Klass() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
149 Klass* k = this;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
150
8712
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
151 // Preinitialize supertype information.
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
152 // A later call to initialize_supers() may update these settings:
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
153 set_super(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
154 for (juint i = 0; i < Klass::primary_super_limit(); i++) {
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
155 _primary_supers[i] = NULL;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
156 }
8712
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
157 set_secondary_supers(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
158 set_secondary_super_cache(NULL);
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
159 _primary_supers[0] = k;
3efdfd6ddbf2 8003553: NPG: metaspace objects should be zeroed in constructors
coleenp
parents: 8003
diff changeset
160 set_super_check_offset(in_bytes(primary_supers_offset()));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
161
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
162 set_java_mirror(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
163 set_modifier_flags(0);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
164 set_layout_helper(Klass::_lh_neutral_value);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
165 set_name(NULL);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
166 AccessFlags af;
a61af66fc99e Initial load
duke
parents:
diff changeset
167 af.set_flags(0);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
168 set_access_flags(af);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
169 set_subklass(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
170 set_next_sibling(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
171 set_next_link(NULL);
10405
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 10376
diff changeset
172 TRACE_INIT_ID(this);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
173
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
174 set_prototype_header(markOopDesc::prototype());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
175 set_biased_lock_revocation_count(0);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
176 set_last_biased_lock_bulk_revocation_time(0);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
177
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
178 // The klass doesn't have any references at this point.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
179 clear_modified_oops();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
180 clear_accumulated_modified_oops();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
181 }
a61af66fc99e Initial load
duke
parents:
diff changeset
182
a61af66fc99e Initial load
duke
parents:
diff changeset
183 jint Klass::array_layout_helper(BasicType etype) {
a61af66fc99e Initial load
duke
parents:
diff changeset
184 assert(etype >= T_BOOLEAN && etype <= T_OBJECT, "valid etype");
a61af66fc99e Initial load
duke
parents:
diff changeset
185 // Note that T_ARRAY is not allowed here.
a61af66fc99e Initial load
duke
parents:
diff changeset
186 int hsize = arrayOopDesc::base_offset_in_bytes(etype);
29
d5fc211aea19 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 0
diff changeset
187 int esize = type2aelembytes(etype);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
188 bool isobj = (etype == T_OBJECT);
a61af66fc99e Initial load
duke
parents:
diff changeset
189 int tag = isobj ? _lh_array_tag_obj_value : _lh_array_tag_type_value;
a61af66fc99e Initial load
duke
parents:
diff changeset
190 int lh = array_layout_helper(tag, hsize, etype, exact_log2(esize));
a61af66fc99e Initial load
duke
parents:
diff changeset
191
a61af66fc99e Initial load
duke
parents:
diff changeset
192 assert(lh < (int)_lh_neutral_value, "must look like an array layout");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
193 assert(layout_helper_is_array(lh), "correct kind");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
194 assert(layout_helper_is_objArray(lh) == isobj, "correct kind");
a61af66fc99e Initial load
duke
parents:
diff changeset
195 assert(layout_helper_is_typeArray(lh) == !isobj, "correct kind");
a61af66fc99e Initial load
duke
parents:
diff changeset
196 assert(layout_helper_header_size(lh) == hsize, "correct decode");
a61af66fc99e Initial load
duke
parents:
diff changeset
197 assert(layout_helper_element_type(lh) == etype, "correct decode");
a61af66fc99e Initial load
duke
parents:
diff changeset
198 assert(1 << layout_helper_log2_element_size(lh) == esize, "correct decode");
a61af66fc99e Initial load
duke
parents:
diff changeset
199
a61af66fc99e Initial load
duke
parents:
diff changeset
200 return lh;
a61af66fc99e Initial load
duke
parents:
diff changeset
201 }
a61af66fc99e Initial load
duke
parents:
diff changeset
202
a61af66fc99e Initial load
duke
parents:
diff changeset
203 bool Klass::can_be_primary_super_slow() const {
a61af66fc99e Initial load
duke
parents:
diff changeset
204 if (super() == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
205 return true;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
206 else if (super()->super_depth() >= primary_super_limit()-1)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
207 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
208 else
a61af66fc99e Initial load
duke
parents:
diff changeset
209 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
210 }
a61af66fc99e Initial load
duke
parents:
diff changeset
211
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
212 void Klass::initialize_supers(Klass* k, TRAPS) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
213 if (FastSuperclassLimit == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
214 // None of the other machinery matters.
a61af66fc99e Initial load
duke
parents:
diff changeset
215 set_super(k);
a61af66fc99e Initial load
duke
parents:
diff changeset
216 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
217 }
a61af66fc99e Initial load
duke
parents:
diff changeset
218 if (k == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
219 set_super(NULL);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
220 _primary_supers[0] = this;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
221 assert(super_depth() == 0, "Object must already be initialized properly");
1142
4ce7240d622c 6914300: ciEnv should export all well known classes
never
parents: 1039
diff changeset
222 } else if (k != super() || k == SystemDictionary::Object_klass()) {
4ce7240d622c 6914300: ciEnv should export all well known classes
never
parents: 1039
diff changeset
223 assert(super() == NULL || super() == SystemDictionary::Object_klass(),
0
a61af66fc99e Initial load
duke
parents:
diff changeset
224 "initialize this only once to a non-trivial value");
a61af66fc99e Initial load
duke
parents:
diff changeset
225 set_super(k);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
226 Klass* sup = k;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
227 int sup_depth = sup->super_depth();
a61af66fc99e Initial load
duke
parents:
diff changeset
228 juint my_depth = MIN2(sup_depth + 1, (int)primary_super_limit());
a61af66fc99e Initial load
duke
parents:
diff changeset
229 if (!can_be_primary_super_slow())
a61af66fc99e Initial load
duke
parents:
diff changeset
230 my_depth = primary_super_limit();
a61af66fc99e Initial load
duke
parents:
diff changeset
231 for (juint i = 0; i < my_depth; i++) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
232 _primary_supers[i] = sup->_primary_supers[i];
0
a61af66fc99e Initial load
duke
parents:
diff changeset
233 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
234 Klass* *super_check_cell;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
235 if (my_depth < primary_super_limit()) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
236 _primary_supers[my_depth] = this;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
237 super_check_cell = &_primary_supers[my_depth];
a61af66fc99e Initial load
duke
parents:
diff changeset
238 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
239 // Overflow of the primary_supers array forces me to be secondary.
a61af66fc99e Initial load
duke
parents:
diff changeset
240 super_check_cell = &_secondary_super_cache;
a61af66fc99e Initial load
duke
parents:
diff changeset
241 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
242 set_super_check_offset((address)super_check_cell - (address) this);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
243
a61af66fc99e Initial load
duke
parents:
diff changeset
244 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
245 {
a61af66fc99e Initial load
duke
parents:
diff changeset
246 juint j = super_depth();
a61af66fc99e Initial load
duke
parents:
diff changeset
247 assert(j == my_depth, "computed accessor gets right answer");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
248 Klass* t = this;
6983
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
249 while (!t->can_be_primary_super()) {
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
250 t = t->super();
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
251 j = t->super_depth();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
252 }
a61af66fc99e Initial load
duke
parents:
diff changeset
253 for (juint j1 = j+1; j1 < primary_super_limit(); j1++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
254 assert(primary_super_of_depth(j1) == NULL, "super list padding");
a61af66fc99e Initial load
duke
parents:
diff changeset
255 }
a61af66fc99e Initial load
duke
parents:
diff changeset
256 while (t != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
257 assert(primary_super_of_depth(j) == t, "super list initialization");
6983
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
258 t = t->super();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
259 --j;
a61af66fc99e Initial load
duke
parents:
diff changeset
260 }
a61af66fc99e Initial load
duke
parents:
diff changeset
261 assert(j == (juint)-1, "correct depth count");
a61af66fc99e Initial load
duke
parents:
diff changeset
262 }
a61af66fc99e Initial load
duke
parents:
diff changeset
263 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
264 }
a61af66fc99e Initial load
duke
parents:
diff changeset
265
a61af66fc99e Initial load
duke
parents:
diff changeset
266 if (secondary_supers() == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
267 KlassHandle this_kh (THREAD, this);
a61af66fc99e Initial load
duke
parents:
diff changeset
268
a61af66fc99e Initial load
duke
parents:
diff changeset
269 // Now compute the list of secondary supertypes.
a61af66fc99e Initial load
duke
parents:
diff changeset
270 // Secondaries can occasionally be on the super chain,
a61af66fc99e Initial load
duke
parents:
diff changeset
271 // if the inline "_primary_supers" array overflows.
a61af66fc99e Initial load
duke
parents:
diff changeset
272 int extras = 0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
273 Klass* p;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
274 for (p = super(); !(p == NULL || p->can_be_primary_super()); p = p->super()) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
275 ++extras;
a61af66fc99e Initial load
duke
parents:
diff changeset
276 }
a61af66fc99e Initial load
duke
parents:
diff changeset
277
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
278 ResourceMark rm(THREAD); // need to reclaim GrowableArrays allocated below
0
a61af66fc99e Initial load
duke
parents:
diff changeset
279
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
280 // Compute the "real" non-extra secondaries.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
281 GrowableArray<Klass*>* secondaries = compute_secondary_supers(extras);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
282 if (secondaries == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
283 // secondary_supers set by compute_secondary_supers
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
284 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
285 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
286
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
287 GrowableArray<Klass*>* primaries = new GrowableArray<Klass*>(extras);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
288
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
289 for (p = this_kh->super(); !(p == NULL || p->can_be_primary_super()); p = p->super()) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
290 int i; // Scan for overflow primaries being duplicates of 2nd'arys
a61af66fc99e Initial load
duke
parents:
diff changeset
291
a61af66fc99e Initial load
duke
parents:
diff changeset
292 // This happens frequently for very deeply nested arrays: the
a61af66fc99e Initial load
duke
parents:
diff changeset
293 // primary superclass chain overflows into the secondary. The
a61af66fc99e Initial load
duke
parents:
diff changeset
294 // secondary list contains the element_klass's secondaries with
a61af66fc99e Initial load
duke
parents:
diff changeset
295 // an extra array dimension added. If the element_klass's
a61af66fc99e Initial load
duke
parents:
diff changeset
296 // secondary list already contains some primary overflows, they
a61af66fc99e Initial load
duke
parents:
diff changeset
297 // (with the extra level of array-ness) will collide with the
a61af66fc99e Initial load
duke
parents:
diff changeset
298 // normal primary superclass overflows.
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
299 for( i = 0; i < secondaries->length(); i++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
300 if( secondaries->at(i) == p )
0
a61af66fc99e Initial load
duke
parents:
diff changeset
301 break;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
302 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
303 if( i < secondaries->length() )
a61af66fc99e Initial load
duke
parents:
diff changeset
304 continue; // It's a dup, don't put it in
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
305 primaries->push(p);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
306 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
307 // Combine the two arrays into a metadata object to pack the array.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
308 // The primaries are added in the reverse order, then the secondaries.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
309 int new_length = primaries->length() + secondaries->length();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
310 Array<Klass*>* s2 = MetadataFactory::new_array<Klass*>(
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
311 class_loader_data(), new_length, CHECK);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
312 int fill_p = primaries->length();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
313 for (int j = 0; j < fill_p; j++) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
314 s2->at_put(j, primaries->pop()); // add primaries in reverse order.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
315 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
316 for( int j = 0; j < secondaries->length(); j++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
317 s2->at_put(j+fill_p, secondaries->at(j)); // add secondaries on the end.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
318 }
a61af66fc99e Initial load
duke
parents:
diff changeset
319
a61af66fc99e Initial load
duke
parents:
diff changeset
320 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
321 // We must not copy any NULL placeholders left over from bootstrap.
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
322 for (int j = 0; j < s2->length(); j++) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
323 assert(s2->at(j) != NULL, "correct bootstrapping order");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
324 }
a61af66fc99e Initial load
duke
parents:
diff changeset
325 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
326
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
327 this_kh->set_secondary_supers(s2);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
328 }
a61af66fc99e Initial load
duke
parents:
diff changeset
329 }
a61af66fc99e Initial load
duke
parents:
diff changeset
330
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
331 GrowableArray<Klass*>* Klass::compute_secondary_supers(int num_extra_slots) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
332 assert(num_extra_slots == 0, "override for complex klasses");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
333 set_secondary_supers(Universe::the_empty_klass_array());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
334 return NULL;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
335 }
a61af66fc99e Initial load
duke
parents:
diff changeset
336
a61af66fc99e Initial load
duke
parents:
diff changeset
337
a61af66fc99e Initial load
duke
parents:
diff changeset
338 Klass* Klass::subklass() const {
6983
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
339 return _subklass == NULL ? NULL : _subklass;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
340 }
a61af66fc99e Initial load
duke
parents:
diff changeset
341
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
342 InstanceKlass* Klass::superklass() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
343 assert(super() == NULL || super()->oop_is_instance(), "must be instance klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
344 return _super == NULL ? NULL : InstanceKlass::cast(_super);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
345 }
a61af66fc99e Initial load
duke
parents:
diff changeset
346
a61af66fc99e Initial load
duke
parents:
diff changeset
347 Klass* Klass::next_sibling() const {
6983
070d523b96a7 8001471: Klass::cast() does nothing
hseigel
parents: 6867
diff changeset
348 return _next_sibling == NULL ? NULL : _next_sibling;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
349 }
a61af66fc99e Initial load
duke
parents:
diff changeset
350
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
351 void Klass::set_subklass(Klass* s) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
352 assert(s != this, "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
353 _subklass = s;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
354 }
a61af66fc99e Initial load
duke
parents:
diff changeset
355
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
356 void Klass::set_next_sibling(Klass* s) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
357 assert(s != this, "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
358 _next_sibling = s;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
359 }
a61af66fc99e Initial load
duke
parents:
diff changeset
360
a61af66fc99e Initial load
duke
parents:
diff changeset
361 void Klass::append_to_sibling_list() {
6867
bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless
coleenp
parents: 6831
diff changeset
362 debug_only(verify();)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
363 // add ourselves to superklass' subklass list
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
364 InstanceKlass* super = superklass();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
365 if (super == NULL) return; // special case: class Object
6867
bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless
coleenp
parents: 6831
diff changeset
366 assert((!super->is_interface() // interfaces cannot be supers
0
a61af66fc99e Initial load
duke
parents:
diff changeset
367 && (super->superklass() == NULL || !is_interface())),
a61af66fc99e Initial load
duke
parents:
diff changeset
368 "an interface can only be a subklass of Object");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
369 Klass* prev_first_subklass = super->subklass_oop();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
370 if (prev_first_subklass != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
371 // set our sibling to be the superklass' previous first subklass
a61af66fc99e Initial load
duke
parents:
diff changeset
372 set_next_sibling(prev_first_subklass);
a61af66fc99e Initial load
duke
parents:
diff changeset
373 }
a61af66fc99e Initial load
duke
parents:
diff changeset
374 // make ourselves the superklass' first subklass
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
375 super->set_subklass(this);
6867
bdb5f8c9978b 7199068: NPG: SharedSkipVerify is meaningless
coleenp
parents: 6831
diff changeset
376 debug_only(verify();)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
377 }
a61af66fc99e Initial load
duke
parents:
diff changeset
378
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
379 bool Klass::is_loader_alive(BoolObjectClosure* is_alive) {
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
380 #ifdef ASSERT
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
381 // The class is alive iff the class loader is alive.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
382 oop loader = class_loader();
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
383 bool loader_alive = (loader == NULL) || is_alive->do_object_b(loader);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
384 #endif // ASSERT
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
385
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
386 // The class is alive if it's mirror is alive (which should be marked if the
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
387 // loader is alive) unless it's an anoymous class.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
388 bool mirror_alive = is_alive->do_object_b(java_mirror());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
389 assert(!mirror_alive || loader_alive, "loader must be alive if the mirror is"
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
390 " but not the other way around with anonymous classes");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
391 return mirror_alive;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
392 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
393
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
394 void Klass::clean_weak_klass_links(BoolObjectClosure* is_alive) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
395 if (!ClassUnloading) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
396 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
397 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
398
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
399 Klass* root = SystemDictionary::Object_klass();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
400 Stack<Klass*, mtGC> stack;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
401
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
402 stack.push(root);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
403 while (!stack.is_empty()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
404 Klass* current = stack.pop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
405
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
406 assert(current->is_loader_alive(is_alive), "just checking, this should be live");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
407
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
408 // Find and set the first alive subklass
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
409 Klass* sub = current->subklass_oop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
410 while (sub != NULL && !sub->is_loader_alive(is_alive)) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
411 #ifndef PRODUCT
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
412 if (TraceClassUnloading && WizardMode) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
413 ResourceMark rm;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
414 tty->print_cr("[Unlinking class (subclass) %s]", sub->external_name());
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
415 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
416 #endif
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
417 sub = sub->next_sibling_oop();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
418 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
419 current->set_subklass(sub);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
420 if (sub != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
421 stack.push(sub);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
422 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
423
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
424 // Find and set the first alive sibling
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
425 Klass* sibling = current->next_sibling_oop();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
426 while (sibling != NULL && !sibling->is_loader_alive(is_alive)) {
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
427 if (TraceClassUnloading && WizardMode) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
428 ResourceMark rm;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
429 tty->print_cr("[Unlinking class (sibling) %s]", sibling->external_name());
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
430 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
431 sibling = sibling->next_sibling_oop();
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
432 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
433 current->set_next_sibling(sibling);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
434 if (sibling != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
435 stack.push(sibling);
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
436 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
437
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
438 // Clean the implementors list and method data.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
439 if (current->oop_is_instance()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
440 InstanceKlass* ik = InstanceKlass::cast(current);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
441 ik->clean_implementors_list(is_alive);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
442 ik->clean_method_data(is_alive);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
443 }
a61af66fc99e Initial load
duke
parents:
diff changeset
444 }
a61af66fc99e Initial load
duke
parents:
diff changeset
445 }
a61af66fc99e Initial load
duke
parents:
diff changeset
446
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
447 void Klass::klass_update_barrier_set(oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
448 record_modified_oops();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
449 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
450
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
451 void Klass::klass_update_barrier_set_pre(void* p, oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
452 // This barrier used by G1, where it's used remember the old oop values,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
453 // so that we don't forget any objects that were live at the snapshot at
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
454 // the beginning. This function is only used when we write oops into
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
455 // Klasses. Since the Klasses are used as roots in G1, we don't have to
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
456 // do anything here.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
457 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
458
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
459 void Klass::klass_oop_store(oop* p, oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
460 assert(!Universe::heap()->is_in_reserved((void*)p), "Should store pointer into metadata");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
461 assert(v == NULL || Universe::heap()->is_in_reserved((void*)v), "Should store pointer to an object");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
462
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
463 // do the store
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
464 if (always_do_update_barrier) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
465 klass_oop_store((volatile oop*)p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
466 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
467 klass_update_barrier_set_pre((void*)p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
468 *p = v;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
469 klass_update_barrier_set(v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
470 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
471 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
472
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
473 void Klass::klass_oop_store(volatile oop* p, oop v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
474 assert(!Universe::heap()->is_in_reserved((void*)p), "Should store pointer into metadata");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
475 assert(v == NULL || Universe::heap()->is_in_reserved((void*)v), "Should store pointer to an object");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
476
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
477 klass_update_barrier_set_pre((void*)p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
478 OrderAccess::release_store_ptr(p, v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
479 klass_update_barrier_set(v);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
480 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
481
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
482 void Klass::oops_do(OopClosure* cl) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
483 cl->do_oop(&_java_mirror);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
484 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
485
a61af66fc99e Initial load
duke
parents:
diff changeset
486 void Klass::remove_unshareable_info() {
17883
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
487 assert (DumpSharedSpaces, "only called for DumpSharedSpaces");
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
488
0
a61af66fc99e Initial load
duke
parents:
diff changeset
489 set_subklass(NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
490 set_next_sibling(NULL);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
491 // Clear the java mirror
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
492 set_java_mirror(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
493 set_next_link(NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
494
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
495 // Null out class_loader_data because we don't share that yet.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
496 set_class_loader_data(NULL);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
497 }
a61af66fc99e Initial load
duke
parents:
diff changeset
498
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
499 void Klass::restore_unshareable_info(TRAPS) {
17916
34862ced4a87 8041723: Event Based tracing ids to be reassigned for CDS klasses
mgronlun
parents: 17889
diff changeset
500 TRACE_INIT_ID(this);
17883
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
501 // If an exception happened during CDS restore, some of these fields may already be
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
502 // set. We leave the class on the CLD list, even if incomplete so that we don't
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
503 // modify the CLD list outside a safepoint.
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
504 if (class_loader_data() == NULL) {
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
505 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data();
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
506 // Restore class_loader_data to the null class loader data
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
507 set_class_loader_data(loader_data);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
508
17883
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
509 // Add to null class loader list first before creating the mirror
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
510 // (same order as class file parsing)
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
511 loader_data->add_class(this);
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
512 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
513
10343
6bd680e9ea35 8003421: NPG: Move oops out of InstanceKlass into mirror
coleenp
parents: 10265
diff changeset
514 // Recreate the class mirror. The protection_domain is always null for
6bd680e9ea35 8003421: NPG: Move oops out of InstanceKlass into mirror
coleenp
parents: 10265
diff changeset
515 // boot loader, for now.
17883
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
516 // Only recreate it if not present. A previous attempt to restore may have
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
517 // gotten an OOM later but keep the mirror if it was created.
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
518 if (java_mirror() == NULL) {
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
519 java_lang_Class::create_mirror(this, Handle(NULL), CHECK);
9428a0b94204 8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents: 17674
diff changeset
520 }
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
521 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 1972
diff changeset
522
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
523 Klass* Klass::array_klass_or_null(int rank) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
524 EXCEPTION_MARK;
a61af66fc99e Initial load
duke
parents:
diff changeset
525 // No exception can be thrown by array_klass_impl when called with or_null == true.
a61af66fc99e Initial load
duke
parents:
diff changeset
526 // (In anycase, the execption mark will fail if it do so)
a61af66fc99e Initial load
duke
parents:
diff changeset
527 return array_klass_impl(true, rank, THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
528 }
a61af66fc99e Initial load
duke
parents:
diff changeset
529
a61af66fc99e Initial load
duke
parents:
diff changeset
530
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
531 Klass* Klass::array_klass_or_null() {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
532 EXCEPTION_MARK;
a61af66fc99e Initial load
duke
parents:
diff changeset
533 // No exception can be thrown by array_klass_impl when called with or_null == true.
a61af66fc99e Initial load
duke
parents:
diff changeset
534 // (In anycase, the execption mark will fail if it do so)
a61af66fc99e Initial load
duke
parents:
diff changeset
535 return array_klass_impl(true, THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
536 }
a61af66fc99e Initial load
duke
parents:
diff changeset
537
a61af66fc99e Initial load
duke
parents:
diff changeset
538
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
539 Klass* Klass::array_klass_impl(bool or_null, int rank, TRAPS) {
6831
d8ce2825b193 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 6725
diff changeset
540 fatal("array_klass should be dispatched to InstanceKlass, ObjArrayKlass or TypeArrayKlass");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
541 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
542 }
a61af66fc99e Initial load
duke
parents:
diff changeset
543
a61af66fc99e Initial load
duke
parents:
diff changeset
544
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
545 Klass* Klass::array_klass_impl(bool or_null, TRAPS) {
6831
d8ce2825b193 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 6725
diff changeset
546 fatal("array_klass should be dispatched to InstanceKlass, ObjArrayKlass or TypeArrayKlass");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
547 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
548 }
a61af66fc99e Initial load
duke
parents:
diff changeset
549
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
550 oop Klass::class_loader() const { return class_loader_data()->class_loader(); }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
551
0
a61af66fc99e Initial load
duke
parents:
diff changeset
552 const char* Klass::external_name() const {
431
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
553 if (oop_is_instance()) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
554 InstanceKlass* ik = (InstanceKlass*) this;
431
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
555 if (ik->is_anonymous()) {
2416
38fea01eb669 6817525: turn on method handle functionality by default for JSR 292
twisti
parents: 2177
diff changeset
556 assert(EnableInvokeDynamic, "");
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
557 intptr_t hash = 0;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
558 if (ik->java_mirror() != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
559 // java_mirror might not be created yet, return 0 as hash.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
560 hash = ik->java_mirror()->identity_hash();
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6983
diff changeset
561 }
431
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
562 char hash_buf[40];
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
563 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
564 size_t hash_len = strlen(hash_buf);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
565
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
566 size_t result_len = name()->utf8_length();
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
567 char* result = NEW_RESOURCE_ARRAY(char, result_len + hash_len + 1);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
568 name()->as_klass_external_name(result, (int) result_len + 1);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
569 assert(strlen(result) == result_len, "");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
570 strcpy(result + result_len, hash_buf);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
571 assert(strlen(result) == result_len + hash_len, "");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
572 return result;
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
573 }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 196
diff changeset
574 }
1039
987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638)
jrose
parents: 605
diff changeset
575 if (name() == NULL) return "<unknown>";
0
a61af66fc99e Initial load
duke
parents:
diff changeset
576 return name()->as_klass_external_name();
a61af66fc99e Initial load
duke
parents:
diff changeset
577 }
a61af66fc99e Initial load
duke
parents:
diff changeset
578
a61af66fc99e Initial load
duke
parents:
diff changeset
579
1039
987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638)
jrose
parents: 605
diff changeset
580 const char* Klass::signature_name() const {
987e948ebbc8 6815692: method handle code needs some cleanup (post-6655638)
jrose
parents: 605
diff changeset
581 if (name() == NULL) return "<unknown>";
0
a61af66fc99e Initial load
duke
parents:
diff changeset
582 return name()->as_C_string();
a61af66fc99e Initial load
duke
parents:
diff changeset
583 }
a61af66fc99e Initial load
duke
parents:
diff changeset
584
a61af66fc99e Initial load
duke
parents:
diff changeset
585 // Unless overridden, modifier_flags is 0.
a61af66fc99e Initial load
duke
parents:
diff changeset
586 jint Klass::compute_modifier_flags(TRAPS) const {
a61af66fc99e Initial load
duke
parents:
diff changeset
587 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
588 }
a61af66fc99e Initial load
duke
parents:
diff changeset
589
a61af66fc99e Initial load
duke
parents:
diff changeset
590 int Klass::atomic_incr_biased_lock_revocation_count() {
a61af66fc99e Initial load
duke
parents:
diff changeset
591 return (int) Atomic::add(1, &_biased_lock_revocation_count);
a61af66fc99e Initial load
duke
parents:
diff changeset
592 }
a61af66fc99e Initial load
duke
parents:
diff changeset
593
a61af66fc99e Initial load
duke
parents:
diff changeset
594 // Unless overridden, jvmti_class_status has no flags set.
a61af66fc99e Initial load
duke
parents:
diff changeset
595 jint Klass::jvmti_class_status() const {
a61af66fc99e Initial load
duke
parents:
diff changeset
596 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
597 }
a61af66fc99e Initial load
duke
parents:
diff changeset
598
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
599
0
a61af66fc99e Initial load
duke
parents:
diff changeset
600 // Printing
a61af66fc99e Initial load
duke
parents:
diff changeset
601
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
602 void Klass::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
603 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
604 // print title
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
605 st->print("%s", internal_name());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
606 print_address_on(st);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
607 st->cr();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
608 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
609
0
a61af66fc99e Initial load
duke
parents:
diff changeset
610 void Klass::oop_print_on(oop obj, outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
611 ResourceMark rm;
a61af66fc99e Initial load
duke
parents:
diff changeset
612 // print title
a61af66fc99e Initial load
duke
parents:
diff changeset
613 st->print_cr("%s ", internal_name());
a61af66fc99e Initial load
duke
parents:
diff changeset
614 obj->print_address_on(st);
a61af66fc99e Initial load
duke
parents:
diff changeset
615
a61af66fc99e Initial load
duke
parents:
diff changeset
616 if (WizardMode) {
a61af66fc99e Initial load
duke
parents:
diff changeset
617 // print header
a61af66fc99e Initial load
duke
parents:
diff changeset
618 obj->mark()->print_on(st);
a61af66fc99e Initial load
duke
parents:
diff changeset
619 }
a61af66fc99e Initial load
duke
parents:
diff changeset
620
a61af66fc99e Initial load
duke
parents:
diff changeset
621 // print class
a61af66fc99e Initial load
duke
parents:
diff changeset
622 st->print(" - klass: ");
a61af66fc99e Initial load
duke
parents:
diff changeset
623 obj->klass()->print_value_on(st);
a61af66fc99e Initial load
duke
parents:
diff changeset
624 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
625 }
a61af66fc99e Initial load
duke
parents:
diff changeset
626
a61af66fc99e Initial load
duke
parents:
diff changeset
627 void Klass::oop_print_value_on(oop obj, outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
628 // print title
a61af66fc99e Initial load
duke
parents:
diff changeset
629 ResourceMark rm; // Cannot print in debug mode without this
a61af66fc99e Initial load
duke
parents:
diff changeset
630 st->print("%s", internal_name());
a61af66fc99e Initial load
duke
parents:
diff changeset
631 obj->print_address_on(st);
a61af66fc99e Initial load
duke
parents:
diff changeset
632 }
a61af66fc99e Initial load
duke
parents:
diff changeset
633
7956
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
634 #if INCLUDE_SERVICES
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
635 // Size Statistics
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
636 void Klass::collect_statistics(KlassSizeStats *sz) const {
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
637 sz->_klass_bytes = sz->count(this);
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
638 sz->_mirror_bytes = sz->count(java_mirror());
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
639 sz->_secondary_supers_bytes = sz->count_array(secondary_supers());
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
640
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
641 sz->_ro_bytes += sz->_secondary_supers_bytes;
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
642 sz->_rw_bytes += sz->_klass_bytes + sz->_mirror_bytes;
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
643 }
16fb9f942703 6479360: PrintClassHistogram improvements
acorn
parents: 7185
diff changeset
644 #endif // INCLUDE_SERVICES
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
645
0
a61af66fc99e Initial load
duke
parents:
diff changeset
646 // Verification
a61af66fc99e Initial load
duke
parents:
diff changeset
647
17674
85318d1fe8fe 8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents: 17663
diff changeset
648 void Klass::verify_on(outputStream* st) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
649
11034
e0c9a1d29eb4 8016325: JVM hangs verifying system dictionary
coleenp
parents: 10405
diff changeset
650 // This can be expensive, but it is worth checking that this klass is actually
e0c9a1d29eb4 8016325: JVM hangs verifying system dictionary
coleenp
parents: 10405
diff changeset
651 // in the CLD graph but not in production.
17935
7384f6a12fc1 8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents: 17916
diff changeset
652 assert(Metaspace::contains((address)this), "Should be");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
653
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
654 guarantee(this->is_klass(),"should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
655
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
656 if (super() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
657 guarantee(super()->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
658 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
659 if (secondary_super_cache() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
660 Klass* ko = secondary_super_cache();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
661 guarantee(ko->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
662 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
663 for ( uint i = 0; i < primary_super_limit(); i++ ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
664 Klass* ko = _primary_supers[i];
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
665 if (ko != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
666 guarantee(ko->is_klass(), "should be klass");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
667 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
668 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
669
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
670 if (java_mirror() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
671 guarantee(java_mirror()->is_oop(), "should be instance");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
672 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
673 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
674
0
a61af66fc99e Initial load
duke
parents:
diff changeset
675 void Klass::oop_verify_on(oop obj, outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
676 guarantee(obj->is_oop(), "should be oop");
a61af66fc99e Initial load
duke
parents:
diff changeset
677 guarantee(obj->klass()->is_klass(), "klass field is not a klass");
a61af66fc99e Initial load
duke
parents:
diff changeset
678 }
a61af66fc99e Initial load
duke
parents:
diff changeset
679
a61af66fc99e Initial load
duke
parents:
diff changeset
680 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
681
12264
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
682 bool Klass::verify_vtable_index(int i) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
683 if (oop_is_instance()) {
12264
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
684 int limit = ((InstanceKlass*)this)->vtable_length()/vtableEntry::size();
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
685 assert(i >= 0 && i < limit, err_msg("index %d out of bounds %d", i, limit));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
686 } else {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6008
diff changeset
687 assert(oop_is_array(), "Must be");
12264
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
688 int limit = ((ArrayKlass*)this)->vtable_length()/vtableEntry::size();
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
689 assert(i >= 0 && i < limit, err_msg("index %d out of bounds %d", i, limit));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
690 }
12264
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
691 return true;
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
692 }
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
693
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
694 bool Klass::verify_itable_index(int i) {
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
695 assert(oop_is_instance(), "");
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
696 int method_count = klassItable::method_count_for_interface(this);
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
697 assert(i >= 0 && i < method_count, "index out of bounds");
b2e698d2276c 8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents: 12146
diff changeset
698 return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
699 }
a61af66fc99e Initial load
duke
parents:
diff changeset
700
a61af66fc99e Initial load
duke
parents:
diff changeset
701 #endif