Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 20197:ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti
author | goetz |
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date | Tue, 29 Apr 2014 15:17:27 +0200 |
parents | bd4d69d9cb7d |
children | 27188ae8bbbb |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/metadataFactory.hpp" |
1972 | 39 #include "memory/oopFactory.hpp" |
3938 | 40 #include "oops/fieldStreams.hpp" |
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41 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 42 #include "oops/instanceKlass.hpp" |
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43 #include "oops/instanceMirrorKlass.hpp" |
1972 | 44 #include "oops/instanceOop.hpp" |
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45 #include "oops/klass.inline.hpp" |
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46 #include "oops/method.hpp" |
1972 | 47 #include "oops/oop.inline.hpp" |
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48 #include "oops/symbol.hpp" |
1972 | 49 #include "prims/jvmtiExport.hpp" |
50 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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51 #include "prims/jvmtiRedefineClasses.hpp" |
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52 #include "prims/methodComparator.hpp" |
1972 | 53 #include "runtime/fieldDescriptor.hpp" |
54 #include "runtime/handles.inline.hpp" | |
55 #include "runtime/javaCalls.hpp" | |
56 #include "runtime/mutexLocker.hpp" | |
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57 #include "runtime/orderAccess.inline.hpp" |
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58 #include "runtime/thread.inline.hpp" |
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59 #include "services/classLoadingService.hpp" |
1972 | 60 #include "services/threadService.hpp" |
61 #include "utilities/dtrace.hpp" | |
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62 #include "utilities/macros.hpp" |
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63 #if INCLUDE_ALL_GCS |
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64 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 65 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
66 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
67 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
68 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
69 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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70 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 71 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
72 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
73 #include "oops/oop.pcgc.inline.hpp" | |
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74 #endif // INCLUDE_ALL_GCS |
1972 | 75 #ifdef COMPILER1 |
76 #include "c1/c1_Compiler.hpp" | |
77 #endif | |
0 | 78 |
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79 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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80 |
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81 #ifdef DTRACE_ENABLED |
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82 |
4006 | 83 #ifndef USDT2 |
84 | |
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85 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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86 char*, intptr_t, oop, intptr_t); |
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87 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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88 char*, intptr_t, oop, intptr_t, int); |
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89 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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90 char*, intptr_t, oop, intptr_t, int); |
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91 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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92 char*, intptr_t, oop, intptr_t, int); |
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93 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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94 char*, intptr_t, oop, intptr_t, int); |
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95 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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96 char*, intptr_t, oop, intptr_t, int); |
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97 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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98 char*, intptr_t, oop, intptr_t, int); |
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99 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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100 char*, intptr_t, oop, intptr_t, int); |
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101 |
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102 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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103 { \ |
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104 char* data = NULL; \ |
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105 int len = 0; \ |
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106 Symbol* name = (clss)->name(); \ |
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107 if (name != NULL) { \ |
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108 data = (char*)name->bytes(); \ |
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109 len = name->utf8_length(); \ |
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110 } \ |
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111 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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112 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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113 } |
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114 |
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115 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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116 { \ |
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117 char* data = NULL; \ |
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118 int len = 0; \ |
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119 Symbol* name = (clss)->name(); \ |
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120 if (name != NULL) { \ |
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121 data = (char*)name->bytes(); \ |
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122 len = name->utf8_length(); \ |
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123 } \ |
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124 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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125 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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126 } |
4006 | 127 #else /* USDT2 */ |
128 | |
129 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
130 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
131 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
132 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
133 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
134 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
135 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
136 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
137 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
138 { \ | |
139 char* data = NULL; \ | |
140 int len = 0; \ | |
141 Symbol* name = (clss)->name(); \ | |
142 if (name != NULL) { \ | |
143 data = (char*)name->bytes(); \ | |
144 len = name->utf8_length(); \ | |
145 } \ | |
146 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
147 data, len, (clss)->class_loader(), thread_type); \ | |
148 } | |
149 | |
150 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
151 { \ | |
152 char* data = NULL; \ | |
153 int len = 0; \ | |
154 Symbol* name = (clss)->name(); \ | |
155 if (name != NULL) { \ | |
156 data = (char*)name->bytes(); \ | |
157 len = name->utf8_length(); \ | |
158 } \ | |
159 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
160 data, len, (clss)->class_loader(), thread_type, wait); \ | |
161 } | |
162 #endif /* USDT2 */ | |
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163 |
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164 #else // ndef DTRACE_ENABLED |
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165 |
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166 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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167 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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168 |
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169 #endif // ndef DTRACE_ENABLED |
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170 |
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171 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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172 |
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173 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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174 ClassLoaderData* loader_data, |
8031 | 175 int vtable_len, |
176 int itable_len, | |
177 int static_field_size, | |
178 int nonstatic_oop_map_size, | |
179 ReferenceType rt, | |
180 AccessFlags access_flags, | |
181 Symbol* name, | |
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182 Klass* super_klass, |
8031 | 183 bool is_anonymous, |
184 TRAPS) { | |
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185 |
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186 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 187 access_flags.is_interface(), is_anonymous); |
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188 |
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189 // Allocation |
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190 InstanceKlass* ik; |
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191 if (rt == REF_NONE) { |
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192 if (name == vmSymbols::java_lang_Class()) { |
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193 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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194 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 195 access_flags, is_anonymous); |
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196 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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197 (SystemDictionary::ClassLoader_klass_loaded() && |
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198 super_klass != NULL && |
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199 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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200 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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201 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 202 access_flags, is_anonymous); |
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203 } else { |
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204 // normal class |
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205 ik = new (loader_data, size, THREAD) InstanceKlass( |
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206 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 207 access_flags, is_anonymous); |
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208 } |
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209 } else { |
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210 // reference klass |
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211 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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212 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 213 access_flags, is_anonymous); |
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214 } |
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215 |
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216 // Check for pending exception before adding to the loader data and incrementing |
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217 // class count. Can get OOM here. |
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218 if (HAS_PENDING_EXCEPTION) { |
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219 return NULL; |
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220 } |
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221 |
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222 // Add all classes to our internal class loader list here, |
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223 // including classes in the bootstrap (NULL) class loader. |
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224 loader_data->add_class(ik); |
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225 |
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226 Atomic::inc(&_total_instanceKlass_count); |
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227 return ik; |
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228 } |
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229 |
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230 |
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231 // copy method ordering from resource area to Metaspace |
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232 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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233 if (m != NULL) { |
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234 // allocate a new array and copy contents (memcpy?) |
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235 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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236 for (int i = 0; i < m->length(); i++) { |
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237 _method_ordering->at_put(i, m->at(i)); |
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238 } |
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239 } else { |
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240 _method_ordering = Universe::the_empty_int_array(); |
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241 } |
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242 } |
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243 |
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244 // create a new array of vtable_indices for default methods |
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245 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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246 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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247 assert(default_vtable_indices() == NULL, "only create once"); |
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248 set_default_vtable_indices(vtable_indices); |
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249 return vtable_indices; |
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250 } |
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251 |
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252 InstanceKlass::InstanceKlass(int vtable_len, |
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253 int itable_len, |
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254 int static_field_size, |
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255 int nonstatic_oop_map_size, |
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256 ReferenceType rt, |
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257 AccessFlags access_flags, |
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258 bool is_anonymous) { |
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259 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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260 |
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261 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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262 access_flags.is_interface(), is_anonymous); |
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263 |
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264 set_vtable_length(vtable_len); |
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265 set_itable_length(itable_len); |
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266 set_static_field_size(static_field_size); |
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267 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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268 set_access_flags(access_flags); |
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269 _misc_flags = 0; // initialize to zero |
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270 set_is_anonymous(is_anonymous); |
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271 assert(size() == iksize, "wrong size for object"); |
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272 |
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273 set_array_klasses(NULL); |
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274 set_methods(NULL); |
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275 set_method_ordering(NULL); |
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276 set_default_methods(NULL); |
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277 set_default_vtable_indices(NULL); |
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278 set_local_interfaces(NULL); |
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279 set_transitive_interfaces(NULL); |
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280 init_implementor(); |
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281 set_fields(NULL, 0); |
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282 set_constants(NULL); |
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283 set_class_loader_data(NULL); |
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284 set_source_file_name_index(0); |
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285 set_source_debug_extension(NULL, 0); |
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286 set_array_name(NULL); |
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287 set_inner_classes(NULL); |
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288 set_static_oop_field_count(0); |
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289 set_nonstatic_field_size(0); |
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290 set_is_marked_dependent(false); |
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291 set_init_state(InstanceKlass::allocated); |
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292 set_init_thread(NULL); |
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293 set_reference_type(rt); |
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294 set_oop_map_cache(NULL); |
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295 set_jni_ids(NULL); |
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296 set_osr_nmethods_head(NULL); |
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297 set_breakpoints(NULL); |
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298 init_previous_versions(); |
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299 set_generic_signature_index(0); |
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300 release_set_methods_jmethod_ids(NULL); |
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301 set_annotations(NULL); |
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302 set_jvmti_cached_class_field_map(NULL); |
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303 set_initial_method_idnum(0); |
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304 _dependencies = NULL; |
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305 set_jvmti_cached_class_field_map(NULL); |
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306 set_cached_class_file(NULL); |
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307 set_initial_method_idnum(0); |
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308 set_minor_version(0); |
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309 set_major_version(0); |
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310 NOT_PRODUCT(_verify_count = 0;) |
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311 |
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312 // initialize the non-header words to zero |
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313 intptr_t* p = (intptr_t*)this; |
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314 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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315 p[index] = NULL_WORD; |
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316 } |
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317 |
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318 // Set temporary value until parseClassFile updates it with the real instance |
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319 // size. |
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320 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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321 } |
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322 |
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323 |
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324 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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325 Array<Method*>* methods) { |
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326 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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327 !methods->is_shared()) { |
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328 for (int i = 0; i < methods->length(); i++) { |
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329 Method* method = methods->at(i); |
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330 if (method == NULL) continue; // maybe null if error processing |
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331 // Only want to delete methods that are not executing for RedefineClasses. |
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332 // The previous version will point to them so they're not totally dangling |
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333 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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334 MetadataFactory::free_metadata(loader_data, method); |
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335 } |
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336 MetadataFactory::free_array<Method*>(loader_data, methods); |
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337 } |
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338 } |
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339 |
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340 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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341 Klass* super_klass, |
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342 Array<Klass*>* local_interfaces, |
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343 Array<Klass*>* transitive_interfaces) { |
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344 // Only deallocate transitive interfaces if not empty, same as super class |
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345 // or same as local interfaces. See code in parseClassFile. |
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346 Array<Klass*>* ti = transitive_interfaces; |
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347 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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348 // check that the interfaces don't come from super class |
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349 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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350 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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351 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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352 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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353 } |
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354 } |
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355 |
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356 // local interfaces can be empty |
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357 if (local_interfaces != Universe::the_empty_klass_array() && |
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358 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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359 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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360 } |
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361 } |
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362 |
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363 // This function deallocates the metadata and C heap pointers that the |
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364 // InstanceKlass points to. |
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365 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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366 |
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367 // Orphan the mirror first, CMS thinks it's still live. |
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368 if (java_mirror() != NULL) { |
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369 java_lang_Class::set_klass(java_mirror(), NULL); |
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370 } |
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371 |
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372 // Need to take this class off the class loader data list. |
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373 loader_data->remove_class(this); |
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374 |
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375 // The array_klass for this class is created later, after error handling. |
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376 // For class redefinition, we keep the original class so this scratch class |
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377 // doesn't have an array class. Either way, assert that there is nothing |
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378 // to deallocate. |
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379 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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380 |
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381 // Release C heap allocated data that this might point to, which includes |
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382 // reference counting symbol names. |
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383 release_C_heap_structures(); |
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384 |
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385 deallocate_methods(loader_data, methods()); |
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386 set_methods(NULL); |
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387 |
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388 if (method_ordering() != NULL && |
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389 method_ordering() != Universe::the_empty_int_array() && |
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390 !method_ordering()->is_shared()) { |
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391 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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392 } |
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393 set_method_ordering(NULL); |
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394 |
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395 // default methods can be empty |
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396 if (default_methods() != NULL && |
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397 default_methods() != Universe::the_empty_method_array() && |
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398 !default_methods()->is_shared()) { |
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399 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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400 } |
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401 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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402 set_default_methods(NULL); |
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403 |
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404 // default methods vtable indices can be empty |
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405 if (default_vtable_indices() != NULL && |
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406 !default_vtable_indices()->is_shared()) { |
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407 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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408 } |
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409 set_default_vtable_indices(NULL); |
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410 |
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411 |
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412 // This array is in Klass, but remove it with the InstanceKlass since |
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413 // this place would be the only caller and it can share memory with transitive |
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414 // interfaces. |
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415 if (secondary_supers() != NULL && |
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416 secondary_supers() != Universe::the_empty_klass_array() && |
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417 secondary_supers() != transitive_interfaces() && |
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418 !secondary_supers()->is_shared()) { |
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419 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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420 } |
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421 set_secondary_supers(NULL); |
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422 |
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423 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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424 set_transitive_interfaces(NULL); |
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425 set_local_interfaces(NULL); |
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426 |
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427 if (fields() != NULL && !fields()->is_shared()) { |
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428 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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429 } |
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430 set_fields(NULL, 0); |
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431 |
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432 // If a method from a redefined class is using this constant pool, don't |
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433 // delete it, yet. The new class's previous version will point to this. |
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434 if (constants() != NULL) { |
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435 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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436 if (!constants()->is_shared()) { |
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437 MetadataFactory::free_metadata(loader_data, constants()); |
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438 } |
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439 set_constants(NULL); |
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440 } |
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441 |
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442 if (inner_classes() != NULL && |
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443 inner_classes() != Universe::the_empty_short_array() && |
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444 !inner_classes()->is_shared()) { |
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445 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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446 } |
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447 set_inner_classes(NULL); |
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448 |
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449 // We should deallocate the Annotations instance if it's not in shared spaces. |
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450 if (annotations() != NULL && !annotations()->is_shared()) { |
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451 MetadataFactory::free_metadata(loader_data, annotations()); |
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452 } |
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453 set_annotations(NULL); |
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454 } |
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455 |
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456 bool InstanceKlass::should_be_initialized() const { |
0 | 457 return !is_initialized(); |
458 } | |
459 | |
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460 klassVtable* InstanceKlass::vtable() const { |
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461 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 462 } |
463 | |
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464 klassItable* InstanceKlass::itable() const { |
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465 return new klassItable(instanceKlassHandle(this)); |
0 | 466 } |
467 | |
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468 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 469 if (!EagerInitialization) return; |
470 | |
471 if (this->is_not_initialized()) { | |
472 // abort if the the class has a class initializer | |
473 if (this->class_initializer() != NULL) return; | |
474 | |
475 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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476 Klass* super = this->super(); |
0 | 477 if (super == NULL) return; |
478 | |
479 // abort if the super class should be initialized | |
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480 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 481 |
482 // call body to expose the this pointer | |
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483 instanceKlassHandle this_oop(thread, this); |
0 | 484 eager_initialize_impl(this_oop); |
485 } | |
486 } | |
487 | |
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488 // JVMTI spec thinks there are signers and protection domain in the |
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489 // instanceKlass. These accessors pretend these fields are there. |
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490 // The hprof specification also thinks these fields are in InstanceKlass. |
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491 oop InstanceKlass::protection_domain() const { |
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492 // return the protection_domain from the mirror |
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493 return java_lang_Class::protection_domain(java_mirror()); |
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494 } |
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495 |
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496 // To remove these from requires an incompatible change and CCC request. |
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497 objArrayOop InstanceKlass::signers() const { |
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498 // return the signers from the mirror |
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499 return java_lang_Class::signers(java_mirror()); |
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500 } |
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501 |
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502 oop InstanceKlass::init_lock() const { |
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503 // return the init lock from the mirror |
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504 oop lock = java_lang_Class::init_lock(java_mirror()); |
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505 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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506 "only fully initialized state can have a null lock"); |
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507 return lock; |
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508 } |
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509 |
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510 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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511 // threads to get this lock will see a null lock and will not lock. |
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512 // That's okay because they all check for initialized state after getting |
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513 // the lock and return. |
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514 void InstanceKlass::fence_and_clear_init_lock() { |
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515 // make sure previous stores are all done, notably the init_state. |
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516 OrderAccess::storestore(); |
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517 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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518 assert(!is_not_initialized(), "class must be initialized now"); |
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519 } |
0 | 520 |
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521 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 522 EXCEPTION_MARK; |
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523 oop init_lock = this_oop->init_lock(); |
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524 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 525 |
526 // abort if someone beat us to the initialization | |
527 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
528 | |
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529 ClassState old_state = this_oop->init_state(); |
0 | 530 link_class_impl(this_oop, true, THREAD); |
531 if (HAS_PENDING_EXCEPTION) { | |
532 CLEAR_PENDING_EXCEPTION; | |
533 // Abort if linking the class throws an exception. | |
534 | |
535 // Use a test to avoid redundantly resetting the state if there's | |
536 // no change. Set_init_state() asserts that state changes make | |
537 // progress, whereas here we might just be spinning in place. | |
538 if( old_state != this_oop->_init_state ) | |
539 this_oop->set_init_state (old_state); | |
540 } else { | |
541 // linking successfull, mark class as initialized | |
542 this_oop->set_init_state (fully_initialized); | |
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543 this_oop->fence_and_clear_init_lock(); |
0 | 544 // trace |
545 if (TraceClassInitialization) { | |
546 ResourceMark rm(THREAD); | |
547 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
548 } | |
549 } | |
550 } | |
551 | |
552 | |
553 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
554 // process. The step comments refers to the procedure described in that section. | |
555 // Note: implementation moved to static method to expose the this pointer. | |
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556 void InstanceKlass::initialize(TRAPS) { |
0 | 557 if (this->should_be_initialized()) { |
558 HandleMark hm(THREAD); | |
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559 instanceKlassHandle this_oop(THREAD, this); |
0 | 560 initialize_impl(this_oop, CHECK); |
561 // Note: at this point the class may be initialized | |
562 // OR it may be in the state of being initialized | |
563 // in case of recursive initialization! | |
564 } else { | |
565 assert(is_initialized(), "sanity check"); | |
566 } | |
567 } | |
568 | |
569 | |
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570 bool InstanceKlass::verify_code( |
0 | 571 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
572 // 1) Verify the bytecodes | |
573 Verifier::Mode mode = | |
574 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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575 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 576 } |
577 | |
578 | |
579 // Used exclusively by the shared spaces dump mechanism to prevent | |
580 // classes mapped into the shared regions in new VMs from appearing linked. | |
581 | |
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582 void InstanceKlass::unlink_class() { |
0 | 583 assert(is_linked(), "must be linked"); |
584 _init_state = loaded; | |
585 } | |
586 | |
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587 void InstanceKlass::link_class(TRAPS) { |
0 | 588 assert(is_loaded(), "must be loaded"); |
589 if (!is_linked()) { | |
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590 HandleMark hm(THREAD); |
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591 instanceKlassHandle this_oop(THREAD, this); |
0 | 592 link_class_impl(this_oop, true, CHECK); |
593 } | |
594 } | |
595 | |
596 // Called to verify that a class can link during initialization, without | |
597 // throwing a VerifyError. | |
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598 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 599 assert(is_loaded(), "must be loaded"); |
600 if (!is_linked()) { | |
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601 HandleMark hm(THREAD); |
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602 instanceKlassHandle this_oop(THREAD, this); |
0 | 603 link_class_impl(this_oop, false, CHECK_false); |
604 } | |
605 return is_linked(); | |
606 } | |
607 | |
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608 bool InstanceKlass::link_class_impl( |
0 | 609 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
610 // check for error state | |
611 if (this_oop->is_in_error_state()) { | |
612 ResourceMark rm(THREAD); | |
613 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
614 this_oop->external_name(), false); | |
615 } | |
616 // return if already verified | |
617 if (this_oop->is_linked()) { | |
618 return true; | |
619 } | |
620 | |
621 // Timing | |
622 // timer handles recursion | |
623 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
624 JavaThread* jt = (JavaThread*)THREAD; | |
625 | |
626 // link super class before linking this class | |
627 instanceKlassHandle super(THREAD, this_oop->super()); | |
628 if (super.not_null()) { | |
629 if (super->is_interface()) { // check if super class is an interface | |
630 ResourceMark rm(THREAD); | |
631 Exceptions::fthrow( | |
632 THREAD_AND_LOCATION, | |
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633 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 634 "class %s has interface %s as super class", |
635 this_oop->external_name(), | |
636 super->external_name() | |
637 ); | |
638 return false; | |
639 } | |
640 | |
641 link_class_impl(super, throw_verifyerror, CHECK_false); | |
642 } | |
643 | |
644 // link all interfaces implemented by this class before linking this class | |
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645 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 646 int num_interfaces = interfaces->length(); |
647 for (int index = 0; index < num_interfaces; index++) { | |
648 HandleMark hm(THREAD); | |
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649 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 650 link_class_impl(ih, throw_verifyerror, CHECK_false); |
651 } | |
652 | |
653 // in case the class is linked in the process of linking its superclasses | |
654 if (this_oop->is_linked()) { | |
655 return true; | |
656 } | |
657 | |
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658 // trace only the link time for this klass that includes |
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659 // the verification time |
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660 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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661 ClassLoader::perf_class_link_selftime(), |
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662 ClassLoader::perf_classes_linked(), |
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663 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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664 jt->get_thread_stat()->perf_timers_addr(), |
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665 PerfClassTraceTime::CLASS_LINK); |
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666 |
0 | 667 // verification & rewriting |
668 { | |
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669 oop init_lock = this_oop->init_lock(); |
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670 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 671 // rewritten will have been set if loader constraint error found |
672 // on an earlier link attempt | |
673 // don't verify or rewrite if already rewritten | |
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674 |
0 | 675 if (!this_oop->is_linked()) { |
676 if (!this_oop->is_rewritten()) { | |
677 { | |
678 // Timer includes any side effects of class verification (resolution, | |
679 // etc), but not recursive entry into verify_code(). | |
875
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680 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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681 ClassLoader::perf_class_verify_selftime(), |
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682 ClassLoader::perf_classes_verified(), |
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683 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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684 jt->get_thread_stat()->perf_timers_addr(), |
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685 PerfClassTraceTime::CLASS_VERIFY); |
0 | 686 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
687 if (!verify_ok) { | |
688 return false; | |
689 } | |
690 } | |
691 | |
692 // Just in case a side-effect of verify linked this class already | |
693 // (which can sometimes happen since the verifier loads classes | |
694 // using custom class loaders, which are free to initialize things) | |
695 if (this_oop->is_linked()) { | |
696 return true; | |
697 } | |
698 | |
699 // also sets rewritten | |
700 this_oop->rewrite_class(CHECK_false); | |
701 } | |
702 | |
3748 | 703 // relocate jsrs and link methods after they are all rewritten |
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704 this_oop->link_methods(CHECK_false); |
3748 | 705 |
0 | 706 // Initialize the vtable and interface table after |
707 // methods have been rewritten since rewrite may | |
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708 // fabricate new Method*s. |
0 | 709 // also does loader constraint checking |
710 if (!this_oop()->is_shared()) { | |
711 ResourceMark rm(THREAD); | |
712 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
713 this_oop->itable()->initialize_itable(true, CHECK_false); | |
714 } | |
715 #ifdef ASSERT | |
716 else { | |
717 ResourceMark rm(THREAD); | |
718 this_oop->vtable()->verify(tty, true); | |
719 // In case itable verification is ever added. | |
720 // this_oop->itable()->verify(tty, true); | |
721 } | |
722 #endif | |
723 this_oop->set_init_state(linked); | |
724 if (JvmtiExport::should_post_class_prepare()) { | |
725 Thread *thread = THREAD; | |
726 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
727 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
728 } | |
729 } | |
730 } | |
731 return true; | |
732 } | |
733 | |
734 | |
735 // Rewrite the byte codes of all of the methods of a class. | |
736 // The rewriter must be called exactly once. Rewriting must happen after | |
737 // verification but before the first method of the class is executed. | |
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738 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 739 assert(is_loaded(), "must be loaded"); |
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740 instanceKlassHandle this_oop(THREAD, this); |
0 | 741 if (this_oop->is_rewritten()) { |
742 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
743 return; | |
744 } | |
3748 | 745 Rewriter::rewrite(this_oop, CHECK); |
0 | 746 this_oop->set_rewritten(); |
747 } | |
748 | |
3748 | 749 // Now relocate and link method entry points after class is rewritten. |
750 // This is outside is_rewritten flag. In case of an exception, it can be | |
751 // executed more than once. | |
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752 void InstanceKlass::link_methods(TRAPS) { |
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753 int len = methods()->length(); |
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754 for (int i = len-1; i >= 0; i--) { |
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755 methodHandle m(THREAD, methods()->at(i)); |
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756 |
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757 // Set up method entry points for compiler and interpreter . |
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758 m->link_method(m, CHECK); |
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759 |
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760 // This is for JVMTI and unrelated to relocator but the last thing we do |
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761 #ifdef ASSERT |
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762 if (StressMethodComparator) { |
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763 ResourceMark rm(THREAD); |
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764 static int nmc = 0; |
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765 for (int j = i; j >= 0 && j >= i-4; j--) { |
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766 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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767 bool z = MethodComparator::methods_EMCP(m(), |
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768 methods()->at(j)); |
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769 if (j == i && !z) { |
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770 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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771 assert(z, "method must compare equal to itself"); |
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772 } |
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773 } |
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774 } |
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775 #endif //ASSERT |
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776 } |
3748 | 777 } |
778 | |
0 | 779 |
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780 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 781 // Make sure klass is linked (verified) before initialization |
782 // A class could already be verified, since it has been reflected upon. | |
783 this_oop->link_class(CHECK); | |
784 | |
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785 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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786 |
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787 bool wait = false; |
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788 |
0 | 789 // refer to the JVM book page 47 for description of steps |
790 // Step 1 | |
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791 { |
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792 oop init_lock = this_oop->init_lock(); |
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793 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 794 |
795 Thread *self = THREAD; // it's passed the current thread | |
796 | |
797 // Step 2 | |
798 // If we were to use wait() instead of waitInterruptibly() then | |
799 // we might end up throwing IE from link/symbol resolution sites | |
800 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
801 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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802 wait = true; |
0 | 803 ol.waitUninterruptibly(CHECK); |
804 } | |
805 | |
806 // Step 3 | |
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807 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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808 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 809 return; |
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810 } |
0 | 811 |
812 // Step 4 | |
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813 if (this_oop->is_initialized()) { |
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814 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 815 return; |
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816 } |
0 | 817 |
818 // Step 5 | |
819 if (this_oop->is_in_error_state()) { | |
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820 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 821 ResourceMark rm(THREAD); |
822 const char* desc = "Could not initialize class "; | |
823 const char* className = this_oop->external_name(); | |
824 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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825 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 826 if (NULL == message) { |
827 // Out of memory: can't create detailed error message | |
828 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
829 } else { | |
830 jio_snprintf(message, msglen, "%s%s", desc, className); | |
831 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
832 } | |
833 } | |
834 | |
835 // Step 6 | |
836 this_oop->set_init_state(being_initialized); | |
837 this_oop->set_init_thread(self); | |
838 } | |
839 | |
840 // Step 7 | |
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841 Klass* super_klass = this_oop->super(); |
6983 | 842 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
843 super_klass->initialize(THREAD); | |
0 | 844 |
845 if (HAS_PENDING_EXCEPTION) { | |
846 Handle e(THREAD, PENDING_EXCEPTION); | |
847 CLEAR_PENDING_EXCEPTION; | |
848 { | |
849 EXCEPTION_MARK; | |
850 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
851 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
852 } | |
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853 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 854 THROW_OOP(e()); |
855 } | |
856 } | |
857 | |
6934 | 858 if (this_oop->has_default_methods()) { |
859 // Step 7.5: initialize any interfaces which have default methods | |
860 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
861 Klass* iface = this_oop->local_interfaces()->at(i); | |
862 InstanceKlass* ik = InstanceKlass::cast(iface); | |
863 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
864 ik->initialize(THREAD); | |
865 | |
866 if (HAS_PENDING_EXCEPTION) { | |
867 Handle e(THREAD, PENDING_EXCEPTION); | |
868 CLEAR_PENDING_EXCEPTION; | |
869 { | |
870 EXCEPTION_MARK; | |
871 // Locks object, set state, and notify all waiting threads | |
872 this_oop->set_initialization_state_and_notify( | |
873 initialization_error, THREAD); | |
874 | |
875 // ignore any exception thrown, superclass initialization error is | |
876 // thrown below | |
877 CLEAR_PENDING_EXCEPTION; | |
878 } | |
879 DTRACE_CLASSINIT_PROBE_WAIT( | |
880 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
881 THROW_OOP(e()); | |
882 } | |
883 } | |
884 } | |
885 } | |
886 | |
0 | 887 // Step 8 |
888 { | |
889 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
890 JavaThread* jt = (JavaThread*)THREAD; | |
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891 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 892 // Timer includes any side effects of class initialization (resolution, |
893 // etc), but not recursive entry into call_class_initializer(). | |
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894 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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895 ClassLoader::perf_class_init_selftime(), |
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896 ClassLoader::perf_classes_inited(), |
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897 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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898 jt->get_thread_stat()->perf_timers_addr(), |
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899 PerfClassTraceTime::CLASS_CLINIT); |
0 | 900 this_oop->call_class_initializer(THREAD); |
901 } | |
902 | |
903 // Step 9 | |
904 if (!HAS_PENDING_EXCEPTION) { | |
905 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
906 { ResourceMark rm(THREAD); | |
907 debug_only(this_oop->vtable()->verify(tty, true);) | |
908 } | |
909 } | |
910 else { | |
911 // Step 10 and 11 | |
912 Handle e(THREAD, PENDING_EXCEPTION); | |
913 CLEAR_PENDING_EXCEPTION; | |
914 { | |
915 EXCEPTION_MARK; | |
916 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
917 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
918 } | |
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919 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 920 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 921 THROW_OOP(e()); |
922 } else { | |
923 JavaCallArguments args(e); | |
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924 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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925 vmSymbols::throwable_void_signature(), |
0 | 926 &args); |
927 } | |
928 } | |
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929 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 930 } |
931 | |
932 | |
933 // Note: implementation moved to static method to expose the this pointer. | |
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934 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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935 instanceKlassHandle kh(THREAD, this); |
0 | 936 set_initialization_state_and_notify_impl(kh, state, CHECK); |
937 } | |
938 | |
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939 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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940 oop init_lock = this_oop->init_lock(); |
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941 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 942 this_oop->set_init_state(state); |
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943 this_oop->fence_and_clear_init_lock(); |
0 | 944 ol.notify_all(CHECK); |
945 } | |
946 | |
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947 // The embedded _implementor field can only record one implementor. |
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948 // When there are more than one implementors, the _implementor field |
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949 // is set to the interface Klass* itself. Following are the possible |
5998
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950 // values for the _implementor field: |
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951 // NULL - no implementor |
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952 // implementor Klass* - one implementor |
5998
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953 // self - more than one implementor |
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954 // |
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955 // The _implementor field only exists for interfaces. |
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956 void InstanceKlass::add_implementor(Klass* k) { |
0 | 957 assert(Compile_lock->owned_by_self(), ""); |
5998
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958 assert(is_interface(), "not interface"); |
0 | 959 // Filter out my subinterfaces. |
960 // (Note: Interfaces are never on the subklass list.) | |
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961 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 962 |
963 // Filter out subclasses whose supers already implement me. | |
964 // (Note: CHA must walk subclasses of direct implementors | |
965 // in order to locate indirect implementors.) | |
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966 Klass* sk = InstanceKlass::cast(k)->super(); |
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967 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 968 // We only need to check one immediate superclass, since the |
969 // implements_interface query looks at transitive_interfaces. | |
970 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
971 return; | |
972 | |
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973 Klass* ik = implementor(); |
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974 if (ik == NULL) { |
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975 set_implementor(k); |
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976 } else if (ik != this) { |
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977 // There is already an implementor. Use itself as an indicator of |
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978 // more than one implementors. |
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979 set_implementor(this); |
0 | 980 } |
981 | |
982 // The implementor also implements the transitive_interfaces | |
983 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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984 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 985 } |
986 } | |
987 | |
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988 void InstanceKlass::init_implementor() { |
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989 if (is_interface()) { |
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990 set_implementor(NULL); |
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991 } |
0 | 992 } |
993 | |
994 | |
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995 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 996 // link this class into the implementors list of every interface it implements |
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997 Klass* this_as_klass_oop = this; |
0 | 998 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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999 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1000 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1001 assert(interf->is_interface(), "expected interface"); |
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1002 interf->add_implementor(this_as_klass_oop); |
0 | 1003 } |
1004 } | |
1005 | |
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1006 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1007 if (is_interface()) |
1008 return false; | |
1009 else | |
1010 return Klass::can_be_primary_super_slow(); | |
1011 } | |
1012 | |
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1013 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1014 // The secondaries are the implemented interfaces. |
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1015 InstanceKlass* ik = InstanceKlass::cast(this); |
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1016 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1017 int num_secondaries = num_extra_slots + interfaces->length(); |
1018 if (num_secondaries == 0) { | |
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1019 // Must share this for correct bootstrapping! |
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1020 set_secondary_supers(Universe::the_empty_klass_array()); |
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1021 return NULL; |
0 | 1022 } else if (num_extra_slots == 0) { |
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1023 // The secondary super list is exactly the same as the transitive interfaces. |
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1024 // Redefine classes has to be careful not to delete this! |
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1025 set_secondary_supers(interfaces); |
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1026 return NULL; |
0 | 1027 } else { |
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1028 // Copy transitive interfaces to a temporary growable array to be constructed |
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1029 // into the secondary super list with extra slots. |
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1030 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1031 for (int i = 0; i < interfaces->length(); i++) { |
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1032 secondaries->push(interfaces->at(i)); |
0 | 1033 } |
1034 return secondaries; | |
1035 } | |
1036 } | |
1037 | |
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1038 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1039 if (k->is_interface()) { |
0 | 1040 return implements_interface(k); |
1041 } else { | |
1042 return Klass::compute_is_subtype_of(k); | |
1043 } | |
1044 } | |
1045 | |
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1046 bool InstanceKlass::implements_interface(Klass* k) const { |
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1047 if (this == k) return true; |
6983 | 1048 assert(k->is_interface(), "should be an interface class"); |
0 | 1049 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1050 if (transitive_interfaces()->at(i) == k) { |
0 | 1051 return true; |
1052 } | |
1053 } | |
1054 return false; | |
1055 } | |
1056 | |
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1057 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1058 // Verify direct super interface |
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1059 if (this == k) return true; |
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1060 assert(k->is_interface(), "should be an interface class"); |
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1061 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1062 if (local_interfaces()->at(i) == k) { |
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1063 return true; |
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1064 } |
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1065 } |
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1066 return false; |
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1067 } |
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1068 |
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1069 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1070 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1071 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1072 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1073 JvmtiExport::post_array_size_exhausted(); |
0 | 1074 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1075 } | |
1076 int size = objArrayOopDesc::object_size(length); | |
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1077 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1078 KlassHandle h_ak (THREAD, ak); |
1079 objArrayOop o = | |
1080 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1081 return o; | |
1082 } | |
1083 | |
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1084 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1085 if (TraceFinalizerRegistration) { |
1086 tty->print("Registered "); | |
1087 i->print_value_on(tty); | |
1088 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1089 } | |
1090 instanceHandle h_i(THREAD, i); | |
1091 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1092 JavaValue result(T_VOID); | |
1093 JavaCallArguments args(h_i); | |
1094 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1095 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1096 return h_i(); | |
1097 } | |
1098 | |
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1099 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1100 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1101 int size = size_helper(); // Query before forming handle. | |
1102 | |
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1103 KlassHandle h_k(THREAD, this); |
0 | 1104 |
1105 instanceOop i; | |
1106 | |
1107 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1108 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1109 i = register_finalizer(i, CHECK_NULL); | |
1110 } | |
1111 return i; | |
1112 } | |
1113 | |
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1114 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1115 if (is_interface() || is_abstract()) { |
1116 ResourceMark rm(THREAD); | |
1117 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1118 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1119 } | |
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1120 if (this == SystemDictionary::Class_klass()) { |
0 | 1121 ResourceMark rm(THREAD); |
1122 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1123 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1124 } | |
1125 } | |
1126 | |
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1127 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1128 instanceKlassHandle this_oop(THREAD, this); |
0 | 1129 return array_klass_impl(this_oop, or_null, n, THREAD); |
1130 } | |
1131 | |
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1132 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1133 if (this_oop->array_klasses() == NULL) { |
1134 if (or_null) return NULL; | |
1135 | |
1136 ResourceMark rm; | |
1137 JavaThread *jt = (JavaThread *)THREAD; | |
1138 { | |
1139 // Atomic creation of array_klasses | |
1140 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1141 MutexLocker ma(MultiArray_lock, THREAD); | |
1142 | |
1143 // Check if update has already taken place | |
1144 if (this_oop->array_klasses() == NULL) { | |
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1145 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1146 this_oop->set_array_klasses(k); |
1147 } | |
1148 } | |
1149 } | |
1150 // _this will always be set at this point | |
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1151 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1152 if (or_null) { |
1153 return oak->array_klass_or_null(n); | |
1154 } | |
1155 return oak->array_klass(n, CHECK_NULL); | |
1156 } | |
1157 | |
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1158 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1159 return array_klass_impl(or_null, 1, THREAD); |
1160 } | |
1161 | |
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1162 void InstanceKlass::call_class_initializer(TRAPS) { |
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1163 instanceKlassHandle ik (THREAD, this); |
0 | 1164 call_class_initializer_impl(ik, THREAD); |
1165 } | |
1166 | |
1167 static int call_class_initializer_impl_counter = 0; // for debugging | |
1168 | |
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1169 Method* InstanceKlass::class_initializer() { |
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1170 Method* clinit = find_method( |
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1171 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1172 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1173 return clinit; |
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1174 } |
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1175 return NULL; |
0 | 1176 } |
1177 | |
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1178 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1179 if (ReplayCompiles && |
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1180 (ReplaySuppressInitializers == 1 || |
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1181 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1182 // Hide the existence of the initializer for the purpose of replaying the compile |
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1183 return; |
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1184 } |
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1185 |
0 | 1186 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1187 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1188 if (TraceClassInitialization) { | |
1189 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1190 this_oop->name()->print_value(); | |
1191 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1192 } | |
1193 if (h_method() != NULL) { | |
1194 JavaCallArguments args; // No arguments | |
1195 JavaValue result(T_VOID); | |
1196 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1197 } | |
1198 } | |
1199 | |
1200 | |
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1201 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1202 InterpreterOopMap* entry_for) { |
1203 // Dirty read, then double-check under a lock. | |
1204 if (_oop_map_cache == NULL) { | |
1205 // Otherwise, allocate a new one. | |
1206 MutexLocker x(OopMapCacheAlloc_lock); | |
1207 // First time use. Allocate a cache in C heap | |
1208 if (_oop_map_cache == NULL) { | |
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1209 // Release stores from OopMapCache constructor before assignment |
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1210 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1211 // required memory barrier only because of the volatile |
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1212 // qualifier of _oop_map_cache. |
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1213 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1214 } |
1215 } | |
1216 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1217 _oop_map_cache->lookup(method, bci, entry_for); | |
1218 } | |
1219 | |
1220 | |
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1221 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1222 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1223 Symbol* f_name = fs.name(); |
1224 Symbol* f_sig = fs.signature(); | |
0 | 1225 if (f_name == name && f_sig == sig) { |
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1226 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1227 return true; |
1228 } | |
1229 } | |
1230 return false; | |
1231 } | |
1232 | |
1233 | |
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1234 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1235 const int n = local_interfaces()->length(); |
1236 for (int i = 0; i < n; i++) { | |
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1237 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1238 assert(intf1->is_interface(), "just checking type"); |
0 | 1239 // search for field in current interface |
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1240 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1241 assert(fd->is_static(), "interface field must be static"); |
1242 return intf1; | |
1243 } | |
1244 // search for field in direct superinterfaces | |
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1245 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1246 if (intf2 != NULL) return intf2; |
1247 } | |
1248 // otherwise field lookup fails | |
1249 return NULL; | |
1250 } | |
1251 | |
1252 | |
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1253 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1254 // search order according to newest JVM spec (5.4.3.2, p.167). |
1255 // 1) search for field in current klass | |
1256 if (find_local_field(name, sig, fd)) { | |
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1257 return const_cast<InstanceKlass*>(this); |
0 | 1258 } |
1259 // 2) search for field recursively in direct superinterfaces | |
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1260 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1261 if (intf != NULL) return intf; |
1262 } | |
1263 // 3) apply field lookup recursively if superclass exists | |
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1264 { Klass* supr = super(); |
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1265 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1266 } |
1267 // 4) otherwise field lookup fails | |
1268 return NULL; | |
1269 } | |
1270 | |
1271 | |
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1272 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1273 // search order according to newest JVM spec (5.4.3.2, p.167). |
1274 // 1) search for field in current klass | |
1275 if (find_local_field(name, sig, fd)) { | |
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1276 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1277 } |
1278 // 2) search for field recursively in direct superinterfaces | |
1279 if (is_static) { | |
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1280 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1281 if (intf != NULL) return intf; |
1282 } | |
1283 // 3) apply field lookup recursively if superclass exists | |
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1284 { Klass* supr = super(); |
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1285 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1286 } |
1287 // 4) otherwise field lookup fails | |
1288 return NULL; | |
1289 } | |
1290 | |
1291 | |
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1292 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1293 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1294 if (fs.offset() == offset) { |
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1295 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1296 if (fd->is_static() == is_static) return true; |
1297 } | |
1298 } | |
1299 return false; | |
1300 } | |
1301 | |
1302 | |
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1303 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1304 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1305 while (klass != NULL) { |
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1306 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1307 return true; |
1308 } | |
6983 | 1309 klass = klass->super(); |
0 | 1310 } |
1311 return false; | |
1312 } | |
1313 | |
1314 | |
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1315 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1316 int len = methods()->length(); |
1317 for (int index = 0; index < len; index++) { | |
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1318 Method* m = methods()->at(index); |
0 | 1319 assert(m->is_method(), "must be method"); |
1320 f(m); | |
1321 } | |
1322 } | |
1323 | |
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1324 |
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1325 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1326 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1327 if (fs.access_flags().is_static()) { | |
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1328 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1329 cl->do_field(&fd); |
1330 } | |
0 | 1331 } |
1332 } | |
1333 | |
1334 | |
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1335 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1336 instanceKlassHandle h_this(THREAD, this); |
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1337 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1338 } |
1339 | |
1340 | |
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1341 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1342 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1343 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1344 if (fs.access_flags().is_static()) { |
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1345 fieldDescriptor& fd = fs.field_descriptor(); |
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1346 f(&fd, mirror, CHECK); |
3938 | 1347 } |
0 | 1348 } |
1349 } | |
1350 | |
1351 | |
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1352 static int compare_fields_by_offset(int* a, int* b) { |
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1353 return a[0] - b[0]; |
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1354 } |
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1355 |
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1356 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1357 InstanceKlass* super = superklass(); |
0 | 1358 if (super != NULL) { |
1359 super->do_nonstatic_fields(cl); | |
1360 } | |
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1361 fieldDescriptor fd; |
3938 | 1362 int length = java_fields_count(); |
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1363 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1364 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1365 int j = 0; |
3938 | 1366 for (int i = 0; i < length; i += 1) { |
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1367 fd.reinitialize(this, i); |
44
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1368 if (!fd.is_static()) { |
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1369 fields_sorted[j + 0] = fd.offset(); |
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1370 fields_sorted[j + 1] = i; |
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1371 j += 2; |
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1372 } |
0 | 1373 } |
44
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1374 if (j > 0) { |
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1375 length = j; |
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1376 // _sort_Fn is defined in growableArray.hpp. |
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1377 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1378 for (int i = 0; i < length; i += 2) { |
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1379 fd.reinitialize(this, fields_sorted[i + 1]); |
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1380 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1381 cl->do_field(&fd); |
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1382 } |
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1383 } |
6197 | 1384 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1385 } |
1386 | |
1387 | |
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1388 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1389 if (array_klasses() != NULL) |
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1390 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1391 } |
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1392 |
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1393 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1394 if (array_klasses() != NULL) |
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1395 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1396 } |
1397 | |
1398 #ifdef ASSERT | |
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1399 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1400 int len = methods->length(); |
1401 for (int index = 0; index < len; index++) { | |
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1402 Method* m = methods->at(index); |
0 | 1403 assert(m->is_method(), "must be method"); |
1404 if (m->signature() == signature && m->name() == name) { | |
1405 return index; | |
1406 } | |
1407 } | |
1408 return -1; | |
1409 } | |
1410 #endif | |
1411 | |
6934 | 1412 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1413 int len = methods->length(); |
1414 // methods are sorted, so do binary search | |
1415 int l = 0; | |
1416 int h = len - 1; | |
1417 while (l <= h) { | |
1418 int mid = (l + h) >> 1; | |
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1419 Method* m = methods->at(mid); |
0 | 1420 assert(m->is_method(), "must be method"); |
1421 int res = m->name()->fast_compare(name); | |
1422 if (res == 0) { | |
6934 | 1423 return mid; |
0 | 1424 } else if (res < 0) { |
1425 l = mid + 1; | |
1426 } else { | |
1427 h = mid - 1; | |
1428 } | |
1429 } | |
6934 | 1430 return -1; |
1431 } | |
1432 | |
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1433 // find_method looks up the name/signature in the local methods array |
6934 | 1434 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1435 return find_method_impl(name, signature, false); |
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1436 } |
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1437 |
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1438 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
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1439 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass); |
6934 | 1440 } |
1441 | |
13414
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1442 // find_instance_method looks up the name/signature in the local methods array |
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|
1443 // and skips over static methods |
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|
1444 Method* InstanceKlass::find_instance_method( |
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1445 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1446 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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|
1447 if (meth != NULL && meth->is_static()) { |
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|
1448 meth = NULL; |
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|
1449 } |
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|
1450 return meth; |
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|
1451 } |
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|
1452 |
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1453 // find_method looks up the name/signature in the local methods array |
6934 | 1454 Method* InstanceKlass::find_method( |
1455 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1456 return InstanceKlass::find_method_impl(methods, name, signature, false); |
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1457 } |
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1458 |
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1459 Method* InstanceKlass::find_method_impl( |
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1460 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
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1461 int hit = find_method_index(methods, name, signature, skipping_overpass); |
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1462 return hit >= 0 ? methods->at(hit): NULL; |
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|
1463 } |
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|
1464 |
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1465 // Used directly for default_methods to find the index into the |
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1466 // default_vtable_indices, and indirectly by find_method |
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|
1467 // find_method_index looks in the local methods array to return the index |
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1468 // of the matching name/signature. If, overpass methods are being ignored, |
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1469 // the search continues to find a potential non-overpass match. This capability |
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|
1470 // is important during method resolution to prefer a static method, for example, |
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|
1471 // over an overpass method. |
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|
1472 int InstanceKlass::find_method_index( |
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|
1473 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
6934 | 1474 int hit = binary_search(methods, name); |
1475 if (hit != -1) { | |
1476 Method* m = methods->at(hit); | |
1477 // Do linear search to find matching signature. First, quick check | |
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|
1478 // for common case, ignoring overpasses if requested. |
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|
1479 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return hit; |
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|
1480 |
6934 | 1481 // search downwards through overloaded methods |
1482 int i; | |
1483 for (i = hit - 1; i >= 0; --i) { | |
1484 Method* m = methods->at(i); | |
1485 assert(m->is_method(), "must be method"); | |
1486 if (m->name() != name) break; | |
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|
1487 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1488 } |
1489 // search upwards | |
1490 for (i = hit + 1; i < methods->length(); ++i) { | |
1491 Method* m = methods->at(i); | |
1492 assert(m->is_method(), "must be method"); | |
1493 if (m->name() != name) break; | |
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|
1494 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1495 } |
1496 // not found | |
0 | 1497 #ifdef ASSERT |
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|
1498 int index = skipping_overpass ? -1 : linear_search(methods, name, signature); |
6934 | 1499 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1500 #endif |
6934 | 1501 } |
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1502 return -1; |
0 | 1503 } |
6934 | 1504 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1505 return find_method_by_name(methods(), name, end); | |
1506 } | |
1507 | |
1508 int InstanceKlass::find_method_by_name( | |
1509 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1510 assert(end_ptr != NULL, "just checking"); | |
1511 int start = binary_search(methods, name); | |
1512 int end = start + 1; | |
1513 if (start != -1) { | |
1514 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1515 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1516 *end_ptr = end; | |
1517 return start; | |
1518 } | |
1519 return -1; | |
1520 } | |
1521 | |
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|
1522 // uncached_lookup_method searches both the local class methods array and all |
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|
1523 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1524 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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|
1525 MethodLookupMode lookup_mode = mode; |
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1526 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1527 while (klass != NULL) { |
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|
1528 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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|
1529 if (method != NULL) { |
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|
1530 return method; |
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|
1531 } |
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1532 klass = InstanceKlass::cast(klass)->super(); |
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|
1533 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1534 } |
1535 return NULL; | |
1536 } | |
1537 | |
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|
1538 // lookup a method in the default methods list then in all transitive interfaces |
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|
1539 // Do NOT return private or static methods |
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|
1540 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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|
1541 Symbol* signature) const { |
12828
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|
1542 Method* m = NULL; |
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|
1543 if (default_methods() != NULL) { |
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|
1544 m = find_method(default_methods(), name, signature); |
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|
1545 } |
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|
1546 // Look up interfaces |
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|
1547 if (m == NULL) { |
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|
1548 m = lookup_method_in_all_interfaces(name, signature, normal); |
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|
1549 } |
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|
1550 return m; |
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|
1551 } |
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|
1552 |
0 | 1553 // lookup a method in all the interfaces that this class implements |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1554 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
36b97be47bde
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|
1555 // They should only be found in the initial InterfaceMethodRef |
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|
1556 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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|
1557 Symbol* signature, |
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|
1558 MethodLookupMode mode) const { |
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|
1559 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1560 int num_ifs = all_ifs->length(); |
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|
1561 InstanceKlass *ik = NULL; |
0 | 1562 for (int i = 0; i < num_ifs; i++) { |
6725
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|
1563 ik = InstanceKlass::cast(all_ifs->at(i)); |
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|
1564 Method* m = ik->lookup_method(name, signature); |
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|
1565 if (m != NULL && m->is_public() && !m->is_static() && |
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|
1566 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1567 return m; |
1568 } | |
1569 } | |
1570 return NULL; | |
1571 } | |
1572 | |
1573 /* jni_id_for_impl for jfieldIds only */ | |
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|
1574 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1575 MutexLocker ml(JfieldIdCreation_lock); |
1576 // Retry lookup after we got the lock | |
1577 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1578 if (probe == NULL) { | |
1579 // Slow case, allocate new static field identifier | |
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|
1580 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1581 this_oop->set_jni_ids(probe); |
1582 } | |
1583 return probe; | |
1584 } | |
1585 | |
1586 | |
1587 /* jni_id_for for jfieldIds only */ | |
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|
1588 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1589 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1590 if (probe == NULL) { | |
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|
1591 probe = jni_id_for_impl(this, offset); |
0 | 1592 } |
1593 return probe; | |
1594 } | |
1595 | |
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1596 u2 InstanceKlass::enclosing_method_data(int offset) { |
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|
1597 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
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|
1598 if (inner_class_list == NULL) { |
f7c4174b33ba
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|
1599 return 0; |
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|
1600 } |
f7c4174b33ba
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|
1601 int length = inner_class_list->length(); |
f7c4174b33ba
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|
1602 if (length % inner_class_next_offset == 0) { |
f7c4174b33ba
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|
1603 return 0; |
f7c4174b33ba
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|
1604 } else { |
f7c4174b33ba
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4739
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|
1605 int index = length - enclosing_method_attribute_size; |
f7c4174b33ba
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4739
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|
1606 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1607 return inner_class_list->at(index + offset); |
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1608 } |
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1609 } |
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1610 |
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1611 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1612 u2 method_index) { |
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1613 Array<jushort>* inner_class_list = inner_classes(); |
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1614 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1615 int length = inner_class_list->length(); |
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1616 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1617 int index = length - enclosing_method_attribute_size; |
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1618 inner_class_list->at_put( |
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1619 index + enclosing_method_class_index_offset, class_index); |
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1620 inner_class_list->at_put( |
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1621 index + enclosing_method_method_index_offset, method_index); |
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1622 } |
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1623 } |
0 | 1624 |
1625 // Lookup or create a jmethodID. | |
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1626 // This code is called by the VMThread and JavaThreads so the |
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1627 // locking has to be done very carefully to avoid deadlocks |
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1628 // and/or other cache consistency problems. |
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1629 // |
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1630 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1631 size_t idnum = (size_t)method_h->method_idnum(); |
1632 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1633 size_t length = 0; | |
1634 jmethodID id = NULL; | |
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1635 |
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1636 // We use a double-check locking idiom here because this cache is |
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1637 // performance sensitive. In the normal system, this cache only |
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1638 // transitions from NULL to non-NULL which is safe because we use |
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1639 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1640 // A partially constructed cache should never be seen by a racing |
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1641 // thread. We also use release_store_ptr() to save a new jmethodID |
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1642 // in the cache so a partially constructed jmethodID should never be |
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1643 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1644 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1645 // creation of the cache itself requires no leaks so a lock is |
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1646 // generally acquired in those two cases. |
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1647 // |
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1648 // If the RedefineClasses() API has been used, then this cache can |
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1649 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1650 // Cache creation requires no leaks and we require safety between all |
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1651 // cache accesses and freeing of the old cache so a lock is generally |
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1652 // acquired when the RedefineClasses() API has been used. |
0 | 1653 |
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1654 if (jmeths != NULL) { |
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1655 // the cache already exists |
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1656 if (!ik_h->idnum_can_increment()) { |
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1657 // the cache can't grow so we can just get the current values |
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1658 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1659 } else { |
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1660 // cache can grow so we have to be more careful |
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1661 if (Threads::number_of_threads() == 0 || |
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1662 SafepointSynchronize::is_at_safepoint()) { |
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1663 // we're single threaded or at a safepoint - no locking needed |
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1664 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1665 } else { |
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1666 MutexLocker ml(JmethodIdCreation_lock); |
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1667 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1668 } |
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|
1669 } |
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|
1670 } |
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1671 // implied else: |
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1672 // we need to allocate a cache so default length and id values are good |
0 | 1673 |
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1674 if (jmeths == NULL || // no cache yet |
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1675 length <= idnum || // cache is too short |
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1676 id == NULL) { // cache doesn't contain entry |
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1677 |
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1678 // This function can be called by the VMThread so we have to do all |
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1679 // things that might block on a safepoint before grabbing the lock. |
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1680 // Otherwise, we can deadlock with the VMThread or have a cache |
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1681 // consistency issue. These vars keep track of what we might have |
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1682 // to free after the lock is dropped. |
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1683 jmethodID to_dealloc_id = NULL; |
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1684 jmethodID* to_dealloc_jmeths = NULL; |
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1685 |
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1686 // may not allocate new_jmeths or use it if we allocate it |
0 | 1687 jmethodID* new_jmeths = NULL; |
1688 if (length <= idnum) { | |
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1689 // allocate a new cache that might be used |
0 | 1690 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1691 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1692 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1693 // cache size is stored in element[0], other elements offset by one |
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1694 new_jmeths[0] = (jmethodID)size; |
0 | 1695 } |
1696 | |
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1697 // allocate a new jmethodID that might be used |
0 | 1698 jmethodID new_id = NULL; |
1699 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1700 // The method passed in is old (but not obsolete), we need to use the current version | |
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1701 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1702 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1703 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1704 } else { |
1705 // It is the current version of the method or an obsolete method, | |
1706 // use the version passed in | |
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1707 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1708 } |
1709 | |
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1710 if (Threads::number_of_threads() == 0 || |
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1711 SafepointSynchronize::is_at_safepoint()) { |
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1712 // we're single threaded or at a safepoint - no locking needed |
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1713 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1714 &to_dealloc_id, &to_dealloc_jmeths); |
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1715 } else { |
0 | 1716 MutexLocker ml(JmethodIdCreation_lock); |
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1717 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1718 &to_dealloc_id, &to_dealloc_jmeths); |
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1719 } |
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1720 |
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1721 // The lock has been dropped so we can free resources. |
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1722 // Free up either the old cache or the new cache if we allocated one. |
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1723 if (to_dealloc_jmeths != NULL) { |
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1724 FreeHeap(to_dealloc_jmeths); |
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1725 } |
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1726 // free up the new ID since it wasn't needed |
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1727 if (to_dealloc_id != NULL) { |
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1728 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1729 } |
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|
1730 } |
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|
1731 return id; |
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1732 } |
0 | 1733 |
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1734 |
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1735 // Common code to fetch the jmethodID from the cache or update the |
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1736 // cache with the new jmethodID. This function should never do anything |
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1737 // that causes the caller to go to a safepoint or we can deadlock with |
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1738 // the VMThread or have cache consistency issues. |
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|
1739 // |
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1740 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1741 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1742 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1743 jmethodID** to_dealloc_jmeths_p) { |
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1744 assert(new_id != NULL, "sanity check"); |
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1745 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1746 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1747 assert(Threads::number_of_threads() == 0 || |
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1748 SafepointSynchronize::is_at_safepoint() || |
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1749 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1750 |
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1751 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1752 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
977
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1753 jmethodID id = NULL; |
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1754 size_t length = 0; |
0 | 1755 |
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1756 if (jmeths == NULL || // no cache yet |
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1757 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1758 if (jmeths != NULL) { |
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1759 // copy any existing entries from the old cache |
49
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1760 for (size_t index = 0; index < length; index++) { |
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1761 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1762 } |
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1763 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1764 } |
49
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1765 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1766 } else { |
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1767 // fetch jmethodID (if any) from the existing cache |
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1768 id = jmeths[idnum+1]; |
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1769 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
49
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1770 } |
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1771 if (id == NULL) { |
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1772 // No matching jmethodID in the existing cache or we have a new |
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1773 // cache or we just grew the cache. This cache write is done here |
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1774 // by the first thread to win the foot race because a jmethodID |
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1775 // needs to be unique once it is generally available. |
49
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1776 id = new_id; |
977
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1777 |
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1778 // The jmethodID cache can be read while unlocked so we have to |
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1779 // make sure the new jmethodID is complete before installing it |
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1780 // in the cache. |
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1781 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1782 } else { |
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1783 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1784 } |
1785 return id; | |
1786 } | |
1787 | |
1788 | |
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1789 // Common code to get the jmethodID cache length and the jmethodID |
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1790 // value at index idnum if there is one. |
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1791 // |
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1792 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1793 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1794 assert(cache != NULL, "sanity check"); |
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1795 assert(length_p != NULL, "sanity check"); |
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1796 assert(id_p != NULL, "sanity check"); |
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1797 |
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1798 // cache size is stored in element[0], other elements offset by one |
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1799 *length_p = (size_t)cache[0]; |
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1800 if (*length_p <= idnum) { // cache is too short |
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1801 *id_p = NULL; |
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1802 } else { |
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1803 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1804 } |
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1805 } |
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1806 |
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1807 |
0 | 1808 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1809 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1810 size_t idnum = (size_t)method->method_idnum(); |
1811 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1812 size_t length; // length assigned as debugging crumb | |
1813 jmethodID id = NULL; | |
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1814 if (jmeths != NULL && // If there is a cache |
0 | 1815 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1816 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1817 } | |
1818 return id; | |
1819 } | |
1820 | |
1821 | |
1822 // | |
1823 // Walk the list of dependent nmethods searching for nmethods which | |
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1824 // are dependent on the changes that were passed in and mark them for |
0 | 1825 // deoptimization. Returns the number of nmethods found. |
1826 // | |
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1827 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1828 assert_locked_or_safepoint(CodeCache_lock); |
1829 int found = 0; | |
1830 nmethodBucket* b = _dependencies; | |
1831 while (b != NULL) { | |
1832 nmethod* nm = b->get_nmethod(); | |
1833 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1834 // the dependency list may contain nmethods which aren't alive. | |
1835 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1836 if (TraceDependencies) { | |
1837 ResourceMark rm; | |
1838 tty->print_cr("Marked for deoptimization"); | |
1839 tty->print_cr(" context = %s", this->external_name()); | |
1840 changes.print(); | |
1841 nm->print(); | |
1842 nm->print_dependencies(); | |
1843 } | |
1844 nm->mark_for_deoptimization(); | |
1845 found++; | |
1846 } | |
1847 b = b->next(); | |
1848 } | |
1849 return found; | |
1850 } | |
1851 | |
1852 | |
1853 // | |
1854 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1855 // It's possible that an nmethod has multiple dependencies on this klass | |
1856 // so a count is kept for each bucket to guarantee that creation and | |
1857 // deletion of dependencies is consistent. | |
1858 // | |
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1859 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1860 assert_locked_or_safepoint(CodeCache_lock); |
1861 nmethodBucket* b = _dependencies; | |
1862 nmethodBucket* last = NULL; | |
1863 while (b != NULL) { | |
1864 if (nm == b->get_nmethod()) { | |
1865 b->increment(); | |
1866 return; | |
1867 } | |
1868 b = b->next(); | |
1869 } | |
1870 _dependencies = new nmethodBucket(nm, _dependencies); | |
1871 } | |
1872 | |
1873 | |
1874 // | |
1875 // Decrement count of the nmethod in the dependency list and remove | |
1876 // the bucket competely when the count goes to 0. This method must | |
1877 // find a corresponding bucket otherwise there's a bug in the | |
1878 // recording of dependecies. | |
1879 // | |
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1880 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1881 assert_locked_or_safepoint(CodeCache_lock); |
1882 nmethodBucket* b = _dependencies; | |
1883 nmethodBucket* last = NULL; | |
1884 while (b != NULL) { | |
1885 if (nm == b->get_nmethod()) { | |
1886 if (b->decrement() == 0) { | |
1887 if (last == NULL) { | |
1888 _dependencies = b->next(); | |
1889 } else { | |
1890 last->set_next(b->next()); | |
1891 } | |
1892 delete b; | |
1893 } | |
1894 return; | |
1895 } | |
1896 last = b; | |
1897 b = b->next(); | |
1898 } | |
1899 #ifdef ASSERT | |
1900 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1901 nm->print(); | |
1902 #endif // ASSERT | |
1903 ShouldNotReachHere(); | |
1904 } | |
1905 | |
1906 | |
1907 #ifndef PRODUCT | |
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1908 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1909 nmethodBucket* b = _dependencies; |
1910 int idx = 0; | |
1911 while (b != NULL) { | |
1912 nmethod* nm = b->get_nmethod(); | |
1913 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1914 if (!verbose) { | |
1915 nm->print_on(tty, "nmethod"); | |
1916 tty->print_cr(" } "); | |
1917 } else { | |
1918 nm->print(); | |
1919 nm->print_dependencies(); | |
1920 tty->print_cr("--- } "); | |
1921 } | |
1922 b = b->next(); | |
1923 } | |
1924 } | |
1925 | |
1926 | |
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1927 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1928 nmethodBucket* b = _dependencies; |
1929 while (b != NULL) { | |
1930 if (nm == b->get_nmethod()) { | |
1931 return true; | |
1932 } | |
1933 b = b->next(); | |
1934 } | |
1935 return false; | |
1936 } | |
1937 #endif //PRODUCT | |
1938 | |
1939 | |
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1940 // Garbage collection |
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1941 |
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1942 #ifdef ASSERT |
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1943 template <class T> void assert_is_in(T *p) { |
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1944 T heap_oop = oopDesc::load_heap_oop(p); |
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1945 if (!oopDesc::is_null(heap_oop)) { |
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1946 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1947 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1948 } |
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1949 } |
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1950 template <class T> void assert_is_in_closed_subset(T *p) { |
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1951 T heap_oop = oopDesc::load_heap_oop(p); |
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1952 if (!oopDesc::is_null(heap_oop)) { |
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1953 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1954 assert(Universe::heap()->is_in_closed_subset(o), |
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1955 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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1956 } |
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1957 } |
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1958 template <class T> void assert_is_in_reserved(T *p) { |
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1959 T heap_oop = oopDesc::load_heap_oop(p); |
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1960 if (!oopDesc::is_null(heap_oop)) { |
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1961 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1962 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1963 } |
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1964 } |
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1965 template <class T> void assert_nothing(T *p) {} |
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1966 |
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1967 #else |
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1968 template <class T> void assert_is_in(T *p) {} |
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1969 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1970 template <class T> void assert_is_in_reserved(T *p) {} |
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1971 template <class T> void assert_nothing(T *p) {} |
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1972 #endif // ASSERT |
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1973 |
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1974 // |
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1975 // Macros that iterate over areas of oops which are specialized on type of |
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1976 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1977 // |
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1978 // Parameters are: |
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1979 // T - type of oop to point to (either oop or narrowOop) |
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1980 // start_p - starting pointer for region to iterate over |
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1981 // count - number of oops or narrowOops to iterate over |
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1982 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1983 // makes it more efficient to put in a macro rather than making |
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1984 // it a template function) |
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1985 // assert_fn - assert function which is template function because performance |
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1986 // doesn't matter when enabled. |
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1987 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1988 T, start_p, count, do_oop, \ |
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1989 assert_fn) \ |
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1990 { \ |
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1991 T* p = (T*)(start_p); \ |
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1992 T* const end = p + (count); \ |
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1993 while (p < end) { \ |
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1994 (assert_fn)(p); \ |
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1995 do_oop; \ |
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1996 ++p; \ |
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1997 } \ |
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1998 } |
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1999 |
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2000 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2001 T, start_p, count, do_oop, \ |
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2002 assert_fn) \ |
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2003 { \ |
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2004 T* const start = (T*)(start_p); \ |
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2005 T* p = start + (count); \ |
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2006 while (start < p) { \ |
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2007 --p; \ |
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2008 (assert_fn)(p); \ |
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2009 do_oop; \ |
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2010 } \ |
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2011 } |
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2012 |
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2013 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2014 T, start_p, count, low, high, \ |
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2015 do_oop, assert_fn) \ |
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2016 { \ |
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2017 T* const l = (T*)(low); \ |
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2018 T* const h = (T*)(high); \ |
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2019 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2020 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2021 "bounded region must be properly aligned"); \ |
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2022 T* p = (T*)(start_p); \ |
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2023 T* end = p + (count); \ |
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2024 if (p < l) p = l; \ |
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2025 if (end > h) end = h; \ |
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2026 while (p < end) { \ |
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2027 (assert_fn)(p); \ |
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2028 do_oop; \ |
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2029 ++p; \ |
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2030 } \ |
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2031 } |
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2032 |
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2033 |
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2034 // The following macros call specialized macros, passing either oop or |
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2035 // narrowOop as the specialization type. These test the UseCompressedOops |
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2036 // flag. |
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2037 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2038 { \ |
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2039 /* Compute oopmap block range. The common case \ |
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2040 is nonstatic_oop_map_size == 1. */ \ |
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2041 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2042 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2043 if (UseCompressedOops) { \ |
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2044 while (map < end_map) { \ |
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2045 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2046 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2047 do_oop, assert_fn) \ |
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2048 ++map; \ |
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2049 } \ |
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2050 } else { \ |
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2051 while (map < end_map) { \ |
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2052 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2053 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2054 do_oop, assert_fn) \ |
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2055 ++map; \ |
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2056 } \ |
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2057 } \ |
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2058 } |
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2059 |
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2060 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2061 { \ |
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2062 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2063 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
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2064 if (UseCompressedOops) { \ |
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2065 while (start_map < map) { \ |
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2066 --map; \ |
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2067 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2068 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2069 do_oop, assert_fn) \ |
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2070 } \ |
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2071 } else { \ |
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2072 while (start_map < map) { \ |
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2073 --map; \ |
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2074 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2075 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2076 do_oop, assert_fn) \ |
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2077 } \ |
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2078 } \ |
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2079 } |
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2080 |
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2081 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2082 assert_fn) \ |
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2083 { \ |
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2084 /* Compute oopmap block range. The common case is \ |
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2085 nonstatic_oop_map_size == 1, so we accept the \ |
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2086 usually non-existent extra overhead of examining \ |
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2087 all the maps. */ \ |
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2088 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2089 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2090 if (UseCompressedOops) { \ |
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2091 while (map < end_map) { \ |
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2092 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2093 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2094 low, high, \ |
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2095 do_oop, assert_fn) \ |
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2096 ++map; \ |
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2097 } \ |
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2098 } else { \ |
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2099 while (map < end_map) { \ |
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2100 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2101 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2102 low, high, \ |
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2103 do_oop, assert_fn) \ |
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2104 ++map; \ |
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2105 } \ |
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2106 } \ |
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2107 } |
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2108 |
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2109 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2110 assert(obj != NULL, "can't follow the content of NULL object"); |
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2111 MarkSweep::follow_klass(obj->klass()); |
113
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2112 InstanceKlass_OOP_MAP_ITERATE( \ |
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2113 obj, \ |
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2114 MarkSweep::mark_and_push(p), \ |
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2115 assert_is_in_closed_subset) |
0 | 2116 } |
2117 | |
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2118 #if INCLUDE_ALL_GCS |
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2119 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2120 oop obj) { |
113
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2121 assert(obj != NULL, "can't follow the content of NULL object"); |
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2122 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2123 // Only mark the header and let the scan of the meta-data mark |
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2124 // everything else. |
113
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2125 InstanceKlass_OOP_MAP_ITERATE( \ |
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2126 obj, \ |
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2127 PSParallelCompact::mark_and_push(cm, p), \ |
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2128 assert_is_in) |
0 | 2129 } |
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2130 #endif // INCLUDE_ALL_GCS |
0 | 2131 |
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2132 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2133 // applied to the klass ptr in the object header. |
2134 | |
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2135 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2136 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2137 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2138 "Inconsistency in do_metadata"); \ |
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2139 if (closure->do_metadata##nv_suffix()) |
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2140 |
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2141 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2142 \ |
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2143 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2144 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2145 /* header */ \ |
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2146 if_do_metadata_checked(closure, nv_suffix) { \ |
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2147 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2148 } \ |
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2149 InstanceKlass_OOP_MAP_ITERATE( \ |
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2150 obj, \ |
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2151 SpecializationStats:: \ |
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2152 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2153 (closure)->do_oop##nv_suffix(p), \ |
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2154 assert_is_in_closed_subset) \ |
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2155 return size_helper(); \ |
0 | 2156 } |
2157 | |
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2158 #if INCLUDE_ALL_GCS |
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2159 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2160 \ |
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2161 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2162 OopClosureType* closure) { \ |
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2163 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2164 /* header */ \ |
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2165 if_do_metadata_checked(closure, nv_suffix) { \ |
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2166 closure->do_klass##nv_suffix(obj->klass()); \ |
342
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2167 } \ |
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2168 /* instance variables */ \ |
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2169 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2170 obj, \ |
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2171 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2172 (closure)->do_oop##nv_suffix(p), \ |
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2173 assert_is_in_closed_subset) \ |
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2174 return size_helper(); \ |
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2175 } |
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2176 #endif // INCLUDE_ALL_GCS |
342
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2177 |
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2178 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2179 \ |
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2180 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2181 OopClosureType* closure, \ |
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2182 MemRegion mr) { \ |
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2183 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2184 if_do_metadata_checked(closure, nv_suffix) { \ |
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2185 if (mr.contains(obj)) { \ |
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2186 closure->do_klass##nv_suffix(obj->klass()); \ |
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2187 } \ |
113
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2188 } \ |
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2189 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2190 obj, mr.start(), mr.end(), \ |
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2191 (closure)->do_oop##nv_suffix(p), \ |
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2192 assert_is_in_closed_subset) \ |
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2193 return size_helper(); \ |
0 | 2194 } |
2195 | |
2196 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
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2197 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2198 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2199 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2200 #if INCLUDE_ALL_GCS |
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2201 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2202 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2203 #endif // INCLUDE_ALL_GCS |
0 | 2204 |
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2205 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2206 int size = size_helper(); |
113
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2207 InstanceKlass_OOP_MAP_ITERATE( \ |
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2208 obj, \ |
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2209 MarkSweep::adjust_pointer(p), \ |
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2210 assert_is_in) |
0 | 2211 return size; |
2212 } | |
2213 | |
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2214 #if INCLUDE_ALL_GCS |
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2215 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2216 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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|
2217 obj, \ |
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2218 if (PSScavenge::should_scavenge(p)) { \ |
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2219 pm->claim_or_forward_depth(p); \ |
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2220 }, \ |
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|
2221 assert_nothing ) |
0 | 2222 } |
2223 | |
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2224 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2225 int size = size_helper(); |
113
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2226 InstanceKlass_OOP_MAP_ITERATE( \ |
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2227 obj, \ |
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2228 PSParallelCompact::adjust_pointer(p), \ |
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2229 assert_is_in) |
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2230 return size; |
0 | 2231 } |
2232 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
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2233 #endif // INCLUDE_ALL_GCS |
0 | 2234 |
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2235 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2236 assert(is_loader_alive(is_alive), "this klass should be live"); |
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2237 if (is_interface()) { |
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|
2238 if (ClassUnloading) { |
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2239 Klass* impl = implementor(); |
5998
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2240 if (impl != NULL) { |
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2241 if (!impl->is_loader_alive(is_alive)) { |
5998
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|
2242 // remove this guy |
8693
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|
2243 Klass** klass = adr_implementor(); |
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|
2244 assert(klass != NULL, "null klass"); |
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|
2245 if (klass != NULL) { |
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|
2246 *klass = NULL; |
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|
2247 } |
5998
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|
2248 } |
0 | 2249 } |
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|
2250 } |
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|
2251 } |
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|
2252 } |
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|
2253 |
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2254 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2255 for (int m = 0; m < methods()->length(); m++) { |
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2256 MethodData* mdo = methods()->at(m)->method_data(); |
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|
2257 if (mdo != NULL) { |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
2258 mdo->clean_method_data(is_alive); |
0 | 2259 } |
2260 } | |
6725
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2261 } |
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|
2262 |
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|
2263 |
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|
2264 static void remove_unshareable_in_class(Klass* k) { |
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|
2265 // remove klass's unshareable info |
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|
2266 k->remove_unshareable_info(); |
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|
2267 } |
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|
2268 |
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|
2269 void InstanceKlass::remove_unshareable_info() { |
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|
2270 Klass::remove_unshareable_info(); |
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|
2271 // Unlink the class |
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|
2272 if (is_linked()) { |
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|
2273 unlink_class(); |
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|
2274 } |
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|
2275 init_implementor(); |
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|
2276 |
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|
2277 constants()->remove_unshareable_info(); |
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|
2278 |
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|
2279 for (int i = 0; i < methods()->length(); i++) { |
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|
2280 Method* m = methods()->at(i); |
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|
2281 m->remove_unshareable_info(); |
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|
2282 } |
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|
2283 |
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|
2284 // do array classes also. |
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|
2285 array_klasses_do(remove_unshareable_in_class); |
0 | 2286 } |
2287 | |
6725
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|
2288 void restore_unshareable_in_class(Klass* k, TRAPS) { |
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|
2289 k->restore_unshareable_info(CHECK); |
0 | 2290 } |
2291 | |
6725
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|
2292 void InstanceKlass::restore_unshareable_info(TRAPS) { |
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|
2293 Klass::restore_unshareable_info(CHECK); |
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|
2294 instanceKlassHandle ik(THREAD, this); |
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|
2295 |
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|
2296 Array<Method*>* methods = ik->methods(); |
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|
2297 int num_methods = methods->length(); |
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|
2298 for (int index2 = 0; index2 < num_methods; ++index2) { |
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|
2299 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
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17810
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|
2300 m->restore_unshareable_info(CHECK); |
6725
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|
2301 } |
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|
2302 if (JvmtiExport::has_redefined_a_class()) { |
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|
2303 // Reinitialize vtable because RedefineClasses may have changed some |
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|
2304 // entries in this vtable for super classes so the CDS vtable might |
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|
2305 // point to old or obsolete entries. RedefineClasses doesn't fix up |
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|
2306 // vtables in the shared system dictionary, only the main one. |
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|
2307 // It also redefines the itable too so fix that too. |
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|
2308 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2309 ik->vtable()->initialize_vtable(false, CHECK); |
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|
2310 ik->itable()->initialize_itable(false, CHECK); |
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|
2311 } |
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|
2312 |
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|
2313 // restore constant pool resolved references |
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|
2314 ik->constants()->restore_unshareable_info(CHECK); |
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|
2315 |
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|
2316 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
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|
2317 } |
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|
2318 |
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|
2319 static void clear_all_breakpoints(Method* m) { |
0 | 2320 m->clear_all_breakpoints(); |
2321 } | |
2322 | |
10149
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8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2323 |
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|
2324 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
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8011803: release_C_heap_structures is never called for anonymous classes.
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|
2325 // notify the debugger |
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|
2326 if (JvmtiExport::should_post_class_unload()) { |
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8011803: release_C_heap_structures is never called for anonymous classes.
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|
2327 JvmtiExport::post_class_unload(ik); |
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|
2328 } |
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|
2329 |
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8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2330 // notify ClassLoadingService of class unload |
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|
2331 ClassLoadingService::notify_class_unloaded(ik); |
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8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2332 } |
d587a5c30bd8
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|
2333 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2334 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2335 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2336 ik->release_C_heap_structures(); |
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|
2337 ik->constants()->release_C_heap_structures(); |
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diff
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|
2338 } |
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|
2339 |
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|
2340 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2341 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2342 // Can't release the constant pool here because the constant pool can be |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2343 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
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10133
diff
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|
2344 // redefine classes. |
d587a5c30bd8
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|
2345 |
0 | 2346 // Deallocate oop map cache |
2347 if (_oop_map_cache != NULL) { | |
2348 delete _oop_map_cache; | |
2349 _oop_map_cache = NULL; | |
2350 } | |
2351 | |
2352 // Deallocate JNI identifiers for jfieldIDs | |
2353 JNIid::deallocate(jni_ids()); | |
2354 set_jni_ids(NULL); | |
2355 | |
2356 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2357 if (jmeths != (jmethodID*)NULL) { | |
2358 release_set_methods_jmethod_ids(NULL); | |
2359 FreeHeap(jmeths); | |
2360 } | |
2361 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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10345
diff
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|
2362 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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diff
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|
2363 { |
6c138b9851fb
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sspitsyn
parents:
10345
diff
changeset
|
2364 Mutex* lock_or_null = SafepointSynchronize::is_at_safepoint() ? NULL : MemberNameTable_lock; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2365 MutexLockerEx ml(lock_or_null, Mutex::_no_safepoint_check_flag); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2366 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2367 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2368 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2369 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2370 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2371 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2372 |
0 | 2373 // release dependencies |
2374 nmethodBucket* b = _dependencies; | |
2375 _dependencies = NULL; | |
2376 while (b != NULL) { | |
2377 nmethodBucket* next = b->next(); | |
2378 delete b; | |
2379 b = next; | |
2380 } | |
2381 | |
2382 // Deallocate breakpoint records | |
2383 if (breakpoints() != 0x0) { | |
2384 methods_do(clear_all_breakpoints); | |
2385 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2386 } | |
2387 | |
2388 // deallocate information about previous versions | |
2389 if (_previous_versions != NULL) { | |
2390 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2391 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2392 delete pv_node; | |
2393 } | |
2394 delete _previous_versions; | |
2395 _previous_versions = NULL; | |
2396 } | |
2397 | |
2398 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2399 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2400 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2401 _cached_class_file = NULL; |
0 | 2402 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2403 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2404 // Decrement symbol reference counts associated with the unloaded class. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2405 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2406 // unreference array name derived from this class name (arrays of an unloaded |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2407 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2408 if (_array_name != NULL) _array_name->decrement_refcount(); |
6203
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2409 if (_source_debug_extension != NULL) FREE_C_HEAP_ARRAY(char, _source_debug_extension, mtClass); |
7464
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2410 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2411 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2412 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2413 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2414 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2415 void InstanceKlass::set_source_debug_extension(char* array, int length) { |
6203
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2416 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2417 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2418 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2419 // Adding one to the attribute length in order to store a null terminator |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2420 // character could cause an overflow because the attribute length is |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2421 // already coded with an u4 in the classfile, but in practice, it's |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2422 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2423 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2424 char* sde = NEW_C_HEAP_ARRAY(char, (length + 1), mtClass); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2425 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2426 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2427 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2428 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2429 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2430 } |
0 | 2431 } |
2432 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2433 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2434 return (address)(offset + InstanceMirrorKlass::offset_of_static_fields() + cast_from_oop<intptr_t>(java_mirror())); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2435 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2436 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2437 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2438 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2439 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2440 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2441 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2442 // If this is an anonymous class, append a hash to make the name unique |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2443 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2444 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2445 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2446 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2447 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2448 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2449 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2450 // Get the internal name as a c string |
0 | 2451 const char* src = (const char*) (name()->as_C_string()); |
2452 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2453 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2454 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2455 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2456 // Add L as type indicator |
0 | 2457 int dest_index = 0; |
2458 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2459 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2460 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2461 for (int src_index = 0; src_index < src_length; ) { |
0 | 2462 dest[dest_index++] = src[src_index++]; |
2463 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2464 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2465 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2466 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2467 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2468 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2469 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2470 // Add the semicolon and the NULL |
0 | 2471 dest[dest_index++] = ';'; |
2472 dest[dest_index] = '\0'; | |
2473 return dest; | |
2474 } | |
2475 | |
2476 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2477 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2478 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2479 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2480 Symbol* classname1 = class1->name(); |
2481 | |
2482 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2483 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2484 } |
2485 oop classloader2; | |
6983 | 2486 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2487 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2488 } else { |
6983 | 2489 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2490 classloader2 = NULL; |
2491 } | |
6983 | 2492 Symbol* classname2 = class2->name(); |
0 | 2493 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2494 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2495 classloader2, classname2); |
2496 } | |
2497 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2498 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2499 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2500 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2501 Symbol* classname1 = class1->name(); |
0 | 2502 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2503 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2504 classloader2, classname2); |
2505 } | |
2506 | |
2507 // return true if two classes are in the same package, classloader | |
2508 // and classname information is enough to determine a class's package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2509 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2510 oop class_loader2, Symbol* class_name2) { |
0 | 2511 if (class_loader1 != class_loader2) { |
2512 return false; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2513 } else if (class_name1 == class_name2) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2514 return true; // skip painful bytewise comparison |
0 | 2515 } else { |
2516 ResourceMark rm; | |
2517 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2518 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2519 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2520 // Otherwise, we just compare jbyte values between the strings. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2521 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2522 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2523 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2524 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2525 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2526 |
2527 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2528 // One of the two doesn't have a package. Only return true | |
2529 // if the other one also doesn't have a package. | |
2530 return last_slash1 == last_slash2; | |
2531 } else { | |
2532 // Skip over '['s | |
2533 if (*name1 == '[') { | |
2534 do { | |
2535 name1++; | |
2536 } while (*name1 == '['); | |
2537 if (*name1 != 'L') { | |
2538 // Something is terribly wrong. Shouldn't be here. | |
2539 return false; | |
2540 } | |
2541 } | |
2542 if (*name2 == '[') { | |
2543 do { | |
2544 name2++; | |
2545 } while (*name2 == '['); | |
2546 if (*name2 != 'L') { | |
2547 // Something is terribly wrong. Shouldn't be here. | |
2548 return false; | |
2549 } | |
2550 } | |
2551 | |
2552 // Check that package part is identical | |
2553 int length1 = last_slash1 - name1; | |
2554 int length2 = last_slash2 - name2; | |
2555 | |
2556 return UTF8::equal(name1, length1, name2, length2); | |
2557 } | |
2558 } | |
2559 } | |
2560 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2561 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2562 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2563 // Assumes name-signature match |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2564 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2565 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2566 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2567 // Private methods can not be overridden |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2568 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2569 return false; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2570 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2571 // If super method is accessible, then override |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2572 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2573 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2574 return true; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2575 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2576 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2577 assert(super_method->is_package_private(), "must be package private"); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2578 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2579 } |
0 | 2580 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2581 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2582 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2583 Symbol*& simple_name_result, TRAPS) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2584 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2585 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2586 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2587 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2588 // tell if two classes have the same enclosing class (at package level) |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2589 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2590 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2591 if (class2_oop == class1()) return true; |
6983 | 2592 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2593 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2594 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2595 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2596 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2597 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2598 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2599 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2600 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2601 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2602 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2603 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2604 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2605 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2606 bool ignore_inner_is_member; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2607 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
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|
2608 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2609 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2610 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2611 outer1 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2612 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2613 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2614 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2615 instanceKlassHandle outer2 = class2; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2616 for (;;) { |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2617 bool ignore_inner_is_member; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2618 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2619 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2620 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2621 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2622 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2623 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2624 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2625 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2626 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2627 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2628 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2629 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2630 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2631 |
0 | 2632 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2633 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2634 jint access = access_flags().as_int(); |
2635 | |
2636 // But check if it happens to be member class. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2637 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2638 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2639 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2640 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2641 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2642 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2643 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2644 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2645 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2646 // since we are looking for the flags for our self. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2647 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2648 if ((ik->name() == inner_name)) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2649 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2650 access = iter.inner_access_flags(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2651 break; |
0 | 2652 } |
2653 } | |
2654 // Remember to strip ACC_SUPER bit | |
2655 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2656 } | |
2657 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2658 jint InstanceKlass::jvmti_class_status() const { |
0 | 2659 jint result = 0; |
2660 | |
2661 if (is_linked()) { | |
2662 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2663 } | |
2664 | |
2665 if (is_initialized()) { | |
2666 assert(is_linked(), "Class status is not consistent"); | |
2667 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2668 } | |
2669 if (is_in_error_state()) { | |
2670 result |= JVMTI_CLASS_STATUS_ERROR; | |
2671 } | |
2672 return result; | |
2673 } | |
2674 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2675 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2676 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2677 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2678 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2679 / itableOffsetEntry::size(); | |
2680 | |
2681 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2682 // If the interface isn't implemented by the receiver class, |
0 | 2683 // the VM should throw IncompatibleClassChangeError. |
2684 if (cnt >= nof_interfaces) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2685 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2686 } |
2687 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2688 Klass* ik = ioe->interface_klass(); |
0 | 2689 if (ik == holder) break; |
2690 } | |
2691 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2692 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2693 Method* m = ime[index].method(); |
0 | 2694 if (m == NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2695 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2696 } |
2697 return m; | |
2698 } | |
2699 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2700 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2701 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2702 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2703 // not yet in the vtable due to concurrent subclass define and superinterface |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2704 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2705 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2706 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2707 int methods_length, bool* trace_name_printed) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2708 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2709 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2710 for (int j = 0; j < methods_length; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2711 Method* old_method = old_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2712 Method* new_method = new_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2713 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2714 for (int index = 0; index < default_methods()->length(); index ++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2715 if (default_methods()->at(index) == old_method) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2716 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2717 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2718 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2719 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2720 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2721 external_name(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2722 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2723 *trace_name_printed = true; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2724 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2725 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
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8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
2726 new_method->name()->as_C_string(), |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
changeset
|
2727 new_method->signature()->as_C_string())); |
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
changeset
|
2728 } |
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parents:
12811
diff
changeset
|
2729 } |
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12811
diff
changeset
|
2730 } |
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parents:
12811
diff
changeset
|
2731 } |
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parents:
12811
diff
changeset
|
2732 } |
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12811
diff
changeset
|
2733 } |
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parents:
12811
diff
changeset
|
2734 #endif // INCLUDE_JVMTI |
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|
2735 |
0 | 2736 // On-stack replacement stuff |
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2737 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2738 // only one compilation can be active |
2739 NEEDS_CLEANUP | |
2740 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2741 OsrList_lock->lock_without_safepoint_check(); | |
2742 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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|
2743 n->set_osr_link(osr_nmethods_head()); |
0 | 2744 set_osr_nmethods_head(n); |
1783 | 2745 // Raise the highest osr level if necessary |
2746 if (TieredCompilation) { | |
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2747 Method* m = n->method(); |
1783 | 2748 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2749 } | |
0 | 2750 // Remember to unlock again |
2751 OsrList_lock->unlock(); | |
1783 | 2752 |
2753 // Get rid of the osr methods for the same bci that have lower levels. | |
2754 if (TieredCompilation) { | |
2755 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2756 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2757 if (inv != NULL && inv->is_in_use()) { | |
2758 inv->make_not_entrant(); | |
2759 } | |
2760 } | |
2761 } | |
0 | 2762 } |
2763 | |
2764 | |
6725
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|
2765 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2766 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2767 OsrList_lock->lock_without_safepoint_check(); | |
2768 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2769 nmethod* last = NULL; | |
2770 nmethod* cur = osr_nmethods_head(); | |
1783 | 2771 int max_level = CompLevel_none; // Find the max comp level excluding n |
6725
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|
2772 Method* m = n->method(); |
0 | 2773 // Search for match |
2774 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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diff
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|
2775 if (TieredCompilation && m == cur->method()) { |
1783 | 2776 // Find max level before n |
2777 max_level = MAX2(max_level, cur->comp_level()); | |
2778 } | |
0 | 2779 last = cur; |
989
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|
2780 cur = cur->osr_link(); |
0 | 2781 } |
1783 | 2782 nmethod* next = NULL; |
0 | 2783 if (cur == n) { |
1783 | 2784 next = cur->osr_link(); |
0 | 2785 if (last == NULL) { |
2786 // Remove first element | |
1783 | 2787 set_osr_nmethods_head(next); |
0 | 2788 } else { |
1783 | 2789 last->set_osr_link(next); |
0 | 2790 } |
2791 } | |
989
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|
2792 n->set_osr_link(NULL); |
1783 | 2793 if (TieredCompilation) { |
2794 cur = next; | |
2795 while (cur != NULL) { | |
2796 // Find max level after n | |
17975
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8034188: OSR methods may not be recompiled at proper compilation level
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|
2797 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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|
2798 max_level = MAX2(max_level, cur->comp_level()); |
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8034188: OSR methods may not be recompiled at proper compilation level
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|
2799 } |
1783 | 2800 cur = cur->osr_link(); |
2801 } | |
2802 m->set_highest_osr_comp_level(max_level); | |
2803 } | |
0 | 2804 // Remember to unlock again |
2805 OsrList_lock->unlock(); | |
2806 } | |
2807 | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2808 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2809 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2810 OsrList_lock->lock_without_safepoint_check(); | |
2811 nmethod* osr = osr_nmethods_head(); | |
1783 | 2812 nmethod* best = NULL; |
0 | 2813 while (osr != NULL) { |
2814 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2815 // There can be a time when a c1 osr method exists but we are waiting |
2816 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2817 // the c1 version and only be able to find the c2 version. However | |
2818 // while we overflow in the c1 code at back branches we don't want to | |
2819 // try and switch to the same code as we are already running | |
2820 | |
0 | 2821 if (osr->method() == m && |
2822 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2823 if (match_level) { |
2824 if (osr->comp_level() == comp_level) { | |
2825 // Found a match - return it. | |
2826 OsrList_lock->unlock(); | |
2827 return osr; | |
2828 } | |
2829 } else { | |
2830 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2831 if (osr->comp_level() == CompLevel_highest_tier) { | |
2832 // Found the best possible - return it. | |
2833 OsrList_lock->unlock(); | |
2834 return osr; | |
2835 } | |
2836 best = osr; | |
2837 } | |
2838 } | |
0 | 2839 } |
989
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jrose
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diff
changeset
|
2840 osr = osr->osr_link(); |
0 | 2841 } |
2842 OsrList_lock->unlock(); | |
1783 | 2843 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2844 return best; | |
2845 } | |
0 | 2846 return NULL; |
2847 } | |
2848 | |
10345
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sspitsyn
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diff
changeset
|
2849 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2850 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2851 MutexLocker ml(MemberNameTable_lock); |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2852 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2853 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2854 |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2855 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2856 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2857 } |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2858 _member_names->add_member_name(index, mem_name_wref); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2859 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2860 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2861 oop InstanceKlass::get_member_name(int index) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2862 MutexLocker ml(MemberNameTable_lock); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2863 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2864 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2865 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2866 if (_member_names == NULL) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2867 return NULL; |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2868 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2869 oop mem_name =_member_names->get_member_name(index); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2870 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2871 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2872 |
0 | 2873 // ----------------------------------------------------------------------------------------------------- |
6725
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6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2874 // Printing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2875 |
0 | 2876 #ifndef PRODUCT |
2877 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2878 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2879 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2880 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2881 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2882 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2883 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2884 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2885 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2886 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2887 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2888 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2889 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2890 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2891 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2892 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2893 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2894 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2895 |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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changeset
|
2896 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2897 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2898 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2899 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2900 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2901 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2902 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2903 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2904 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2905 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2906 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2907 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2908 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2909 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2910 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2911 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2912 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2913 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2914 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2915 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2916 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2917 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2918 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2919 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2920 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2921 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2922 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2923 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2924 st->cr(); |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2925 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2926 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2927 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2928 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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changeset
|
2929 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
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diff
changeset
|
2930 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2931 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2932 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2933 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2934 } |
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changeset
|
2935 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2936 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2937 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
changeset
|
2938 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2939 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2940 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2941 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2942 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2943 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2944 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2945 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2946 } |
6725
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|
2947 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
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|
2948 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
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coleenp
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|
2949 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
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coleenp
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|
2950 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2951 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2952 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2953 st->cr(); |
da91efe96a93
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parents:
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diff
changeset
|
2954 } |
da91efe96a93
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changeset
|
2955 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2956 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2957 st->print(BULLET"source file: "); |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2958 source_file_name()->print_value_on(st); |
da91efe96a93
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|
2959 st->cr(); |
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parents:
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diff
changeset
|
2960 } |
da91efe96a93
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diff
changeset
|
2961 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2962 st->print(BULLET"source debug extension: "); |
da91efe96a93
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changeset
|
2963 st->print("%s", source_debug_extension()); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2964 st->cr(); |
da91efe96a93
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diff
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|
2965 } |
8031 | 2966 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
2967 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
2968 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
2969 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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coleenp
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changeset
|
2970 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2971 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
2972 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2973 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2974 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2975 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2976 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2977 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2978 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2979 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2980 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2981 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2982 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2983 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2984 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2985 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2986 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2987 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2988 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2989 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2990 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2991 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2993 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2997 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2998 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3001 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3002 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3003 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3004 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3005 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3008 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3009 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3010 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3011 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3013 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3014 assert(is_klass(), "must be klass"); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3015 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3016 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3017 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3018 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3019 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
3020 |
0 | 3021 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3022 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3023 if (_obj == NULL) { |
0 | 3024 fd->print_on(_st); |
3025 _st->cr(); | |
3026 } else { | |
3027 fd->print_on_for(_st, _obj); | |
3028 _st->cr(); | |
3029 } | |
3030 } | |
3031 | |
3032 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3033 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3034 Klass::oop_print_on(obj, st); |
3035 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3036 if (this == SystemDictionary::String_klass()) { |
0 | 3037 typeArrayOop value = java_lang_String::value(obj); |
3038 juint offset = java_lang_String::offset(obj); | |
3039 juint length = java_lang_String::length(obj); | |
3040 if (value != NULL && | |
3041 value->is_typeArray() && | |
3042 offset <= (juint) value->length() && | |
3043 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3044 st->print(BULLET"string: "); |
0 | 3045 Handle h_obj(obj); |
3046 java_lang_String::print(h_obj, st); | |
3047 st->cr(); | |
3048 if (!WizardMode) return; // that is enough | |
3049 } | |
3050 } | |
3051 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3052 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3053 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3054 do_nonstatic_fields(&print_field); |
0 | 3055 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3056 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3057 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3058 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3059 st->cr(); |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
3060 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3061 st->print(BULLET"fake entry for mirror: "); |
6725
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coleenp
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6266
diff
changeset
|
3062 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3063 st->cr(); |
6725
da91efe96a93
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3064 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
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|
3065 st->print(BULLET"fake entry for array: "); |
6725
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|
3066 array_klass->print_value_on_maybe_null(st); |
0 | 3067 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
3068 st->print_cr(BULLET"fake entry for oop_size: %d", java_lang_Class::oop_size(obj)); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
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diff
changeset
|
3069 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
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|
3070 Klass* real_klass = java_lang_Class::as_Klass(obj); |
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3071 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
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|
3072 InstanceKlass::cast(real_klass)->do_local_static_fields(&print_field); |
2376
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parents:
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|
3073 } |
6725
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|
3074 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
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6815692: method handle code needs some cleanup (post-6655638)
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parents:
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diff
changeset
|
3075 st->print(BULLET"signature: "); |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
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|
3076 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
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|
3077 st->cr(); |
0 | 3078 } |
3079 } | |
3080 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1144
diff
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|
3081 #endif //PRODUCT |
4e6abf09f540
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|
3082 |
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3083 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3084 st->print("a "); |
3085 name()->print_value_on(st); | |
3086 obj->print_address_on(st); | |
6725
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3087 if (this == SystemDictionary::String_klass() |
665
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|
3088 && java_lang_String::value(obj) != NULL) { |
c89f86385056
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diff
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|
3089 ResourceMark rm; |
c89f86385056
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diff
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|
3090 int len = java_lang_String::length(obj); |
c89f86385056
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|
3091 int plen = (len < 24 ? len : 12); |
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|
3092 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
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|
3093 st->print(" = \"%s\"", str); |
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|
3094 if (len > plen) |
c89f86385056
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|
3095 st->print("...[%d]", len); |
6725
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3096 } else if (this == SystemDictionary::Class_klass()) { |
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3097 Klass* k = java_lang_Class::as_Klass(obj); |
665
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|
3098 st->print(" = "); |
c89f86385056
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|
3099 if (k != NULL) { |
c89f86385056
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|
3100 k->print_value_on(st); |
c89f86385056
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|
3101 } else { |
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|
3102 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
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|
3103 st->print("%s", tname ? tname : "type?"); |
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|
3104 } |
6725
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|
3105 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
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|
3106 st->print(" = "); |
2357
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|
3107 java_lang_invoke_MethodType::print_signature(obj, st); |
665
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|
3108 } else if (java_lang_boxing_object::is_instance(obj)) { |
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|
3109 st->print(" = "); |
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|
3110 java_lang_boxing_object::print(obj, st); |
6725
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|
3111 } else if (this == SystemDictionary::LambdaForm_klass()) { |
6266
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diff
changeset
|
3112 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
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|
3113 if (vmentry != NULL) { |
1d7922586cf6
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|
3114 st->print(" => "); |
1d7922586cf6
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|
3115 vmentry->print_value_on(st); |
1d7922586cf6
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|
3116 } |
6725
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|
3117 } else if (this == SystemDictionary::MemberName_klass()) { |
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|
3118 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
1d7922586cf6
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diff
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|
3119 if (vmtarget != NULL) { |
1d7922586cf6
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|
3120 st->print(" = "); |
1d7922586cf6
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|
3121 vmtarget->print_value_on(st); |
1d7922586cf6
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|
3122 } else { |
1d7922586cf6
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|
3123 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
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|
3124 st->print("."); |
1d7922586cf6
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|
3125 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
1d7922586cf6
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|
3126 } |
665
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|
3127 } |
0 | 3128 } |
3129 | |
6725
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|
3130 const char* InstanceKlass::internal_name() const { |
0 | 3131 return external_name(); |
3132 } | |
3133 | |
7956 | 3134 #if INCLUDE_SERVICES |
3135 // Size Statistics | |
3136 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3137 Klass::collect_statistics(sz); | |
3138 | |
3139 sz->_inst_size = HeapWordSize * size_helper(); | |
3140 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3141 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3142 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3143 ((is_interface() || is_anonymous()) ? | |
3144 align_object_offset(nonstatic_oop_map_size()) : | |
3145 nonstatic_oop_map_size()); | |
3146 | |
3147 int n = 0; | |
3148 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3149 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3150 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3151 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3152 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3153 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3154 sz->_ro_bytes += n; | |
3155 | |
3156 const ConstantPool* cp = constants(); | |
3157 if (cp) { | |
3158 cp->collect_statistics(sz); | |
3159 } | |
3160 | |
3161 const Annotations* anno = annotations(); | |
3162 if (anno) { | |
3163 anno->collect_statistics(sz); | |
3164 } | |
3165 | |
3166 const Array<Method*>* methods_array = methods(); | |
3167 if (methods()) { | |
3168 for (int i = 0; i < methods_array->length(); i++) { | |
3169 Method* method = methods_array->at(i); | |
3170 if (method) { | |
3171 sz->_method_count ++; | |
3172 method->collect_statistics(sz); | |
3173 } | |
3174 } | |
3175 } | |
3176 } | |
3177 #endif // INCLUDE_SERVICES | |
3178 | |
0 | 3179 // Verification |
3180 | |
3181 class VerifyFieldClosure: public OopClosure { | |
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3182 protected: |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3183 template <class T> void do_oop_work(T* p) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3184 oop obj = oopDesc::load_decode_heap_oop(p); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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|
3185 if (!obj->is_oop_or_null()) { |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3186 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3187 Universe::print(); |
3188 guarantee(false, "boom"); | |
3189 } | |
3190 } | |
113
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diff
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|
3191 public: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3192 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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diff
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|
3193 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3194 }; |
3195 | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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diff
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|
3196 void InstanceKlass::verify_on(outputStream* st) { |
6725
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|
3197 #ifndef PRODUCT |
11034 | 3198 // Avoid redundant verifies, this really should be in product. |
6725
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|
3199 if (_verify_count == Universe::verify_count()) return; |
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|
3200 _verify_count = Universe::verify_count(); |
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|
3201 #endif |
11034 | 3202 |
3203 // Verify Klass | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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|
3204 Klass::verify_on(st); |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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diff
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|
3205 |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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diff
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|
3206 // Verify that klass is present in ClassLoaderData |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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17464
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|
3207 guarantee(class_loader_data()->contains_klass(this), |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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17464
diff
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|
3208 "this class isn't found in class loader data"); |
6725
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|
3209 |
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|
3210 // Verify vtables |
da91efe96a93
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|
3211 if (is_linked()) { |
11034 | 3212 ResourceMark rm; |
6725
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|
3213 // $$$ This used to be done only for m/s collections. Doing it |
da91efe96a93
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diff
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|
3214 // always seemed a valid generalization. (DLD -- 6/00) |
da91efe96a93
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diff
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|
3215 vtable()->verify(st); |
da91efe96a93
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diff
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|
3216 } |
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|
3217 |
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|
3218 // Verify first subklass |
da91efe96a93
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|
3219 if (subklass_oop() != NULL) { |
da91efe96a93
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|
3220 guarantee(subklass_oop()->is_klass(), "should be klass"); |
da91efe96a93
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|
3221 } |
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|
3222 |
da91efe96a93
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|
3223 // Verify siblings |
da91efe96a93
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|
3224 Klass* super = this->super(); |
da91efe96a93
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|
3225 Klass* sib = next_sibling(); |
da91efe96a93
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diff
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|
3226 if (sib != NULL) { |
da91efe96a93
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diff
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|
3227 if (sib == this) { |
da91efe96a93
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diff
changeset
|
3228 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
da91efe96a93
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|
3229 } |
da91efe96a93
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|
3230 |
da91efe96a93
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|
3231 guarantee(sib->is_klass(), "should be klass"); |
da91efe96a93
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diff
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|
3232 guarantee(sib->super() == super, "siblings should have same superklass"); |
da91efe96a93
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|
3233 } |
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|
3234 |
da91efe96a93
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|
3235 // Verify implementor fields |
da91efe96a93
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diff
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|
3236 Klass* im = implementor(); |
da91efe96a93
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diff
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|
3237 if (im != NULL) { |
da91efe96a93
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|
3238 guarantee(is_interface(), "only interfaces should have implementor set"); |
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|
3239 guarantee(im->is_klass(), "should be klass"); |
6983 | 3240 guarantee(!im->is_interface() || im == this, |
6725
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|
3241 "implementors cannot be interfaces"); |
da91efe96a93
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|
3242 } |
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|
3243 |
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|
3244 // Verify local interfaces |
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|
3245 if (local_interfaces()) { |
da91efe96a93
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|
3246 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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|
3247 for (int j = 0; j < local_interfaces->length(); j++) { |
da91efe96a93
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|
3248 Klass* e = local_interfaces->at(j); |
6983 | 3249 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3250 } |
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|
3251 } |
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|
3252 |
da91efe96a93
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|
3253 // Verify transitive interfaces |
da91efe96a93
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|
3254 if (transitive_interfaces() != NULL) { |
da91efe96a93
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|
3255 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
da91efe96a93
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|
3256 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
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|
3257 Klass* e = transitive_interfaces->at(j); |
6983 | 3258 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
da91efe96a93
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|
3259 } |
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|
3260 } |
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|
3261 |
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|
3262 // Verify methods |
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|
3263 if (methods() != NULL) { |
da91efe96a93
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|
3264 Array<Method*>* methods = this->methods(); |
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|
3265 for (int j = 0; j < methods->length(); j++) { |
da91efe96a93
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|
3266 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
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|
3267 } |
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|
3268 for (int j = 0; j < methods->length() - 1; j++) { |
da91efe96a93
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|
3269 Method* m1 = methods->at(j); |
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|
3270 Method* m2 = methods->at(j + 1); |
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|
3271 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3272 } |
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diff
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|
3273 } |
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|
3274 |
da91efe96a93
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|
3275 // Verify method ordering |
da91efe96a93
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|
3276 if (method_ordering() != NULL) { |
da91efe96a93
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|
3277 Array<int>* method_ordering = this->method_ordering(); |
da91efe96a93
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|
3278 int length = method_ordering->length(); |
da91efe96a93
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|
3279 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3280 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
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|
3281 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3282 jlong sum = 0; |
da91efe96a93
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|
3283 for (int j = 0; j < length; j++) { |
da91efe96a93
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|
3284 int original_index = method_ordering->at(j); |
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|
3285 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3286 guarantee(original_index < length, "invalid method ordering index"); |
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|
3287 sum += original_index; |
da91efe96a93
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|
3288 } |
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|
3289 // Verify sum of indices 0,1,...,length-1 |
da91efe96a93
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|
3290 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3291 } else { |
da91efe96a93
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|
3292 guarantee(length == 0, "invalid method ordering length"); |
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|
3293 } |
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|
3294 } |
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|
3295 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3296 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3297 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3298 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3299 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3300 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3301 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3302 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3303 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3304 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3305 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3306 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3307 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3308 |
6725
da91efe96a93
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diff
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|
3309 // Verify JNI static field identifiers |
da91efe96a93
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changeset
|
3310 if (jni_ids() != NULL) { |
da91efe96a93
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diff
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|
3311 jni_ids()->verify(this); |
da91efe96a93
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diff
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|
3312 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3313 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3314 // Verify other fields |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3315 if (array_klasses() != NULL) { |
da91efe96a93
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diff
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|
3316 guarantee(array_klasses()->is_klass(), "should be klass"); |
da91efe96a93
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|
3317 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3318 if (constants() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3319 guarantee(constants()->is_constantPool(), "should be constant pool"); |
da91efe96a93
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|
3320 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3321 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3322 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3323 guarantee(host->is_klass(), "should be klass"); |
6725
da91efe96a93
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6266
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|
3324 } |
da91efe96a93
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diff
changeset
|
3325 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3326 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
3327 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3328 Klass::oop_verify_on(obj, st); |
3329 VerifyFieldClosure blk; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3330 obj->oop_iterate_no_header(&blk); |
0 | 3331 } |
3332 | |
6725
da91efe96a93
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|
3333 |
113
ba764ed4b6f2
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52
diff
changeset
|
3334 // JNIid class for jfieldIDs only |
ba764ed4b6f2
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52
diff
changeset
|
3335 // Note to reviewers: |
ba764ed4b6f2
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coleenp
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52
diff
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|
3336 // These JNI functions are just moved over to column 1 and not changed |
ba764ed4b6f2
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52
diff
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|
3337 // in the compressed oops workspace. |
6725
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coleenp
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6266
diff
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|
3338 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
ba764ed4b6f2
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52
diff
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|
3339 _holder = holder; |
ba764ed4b6f2
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coleenp
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52
diff
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|
3340 _offset = offset; |
ba764ed4b6f2
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52
diff
changeset
|
3341 _next = next; |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3342 debug_only(_is_static_field_id = false;) |
ba764ed4b6f2
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52
diff
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|
3343 } |
0 | 3344 |
3345 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3346 JNIid* JNIid::find(int offset) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3347 JNIid* current = this; |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3348 while (current != NULL) { |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3349 if (current->offset() == offset) return current; |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3350 current = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3351 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3352 return NULL; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3353 } |
0 | 3354 |
3355 void JNIid::deallocate(JNIid* current) { | |
113
ba764ed4b6f2
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52
diff
changeset
|
3356 while (current != NULL) { |
ba764ed4b6f2
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52
diff
changeset
|
3357 JNIid* next = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3358 delete current; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3359 current = next; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3360 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3361 } |
0 | 3362 |
3363 | |
6725
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6266
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changeset
|
3364 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3365 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
ba764ed4b6f2
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52
diff
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|
3366 int end_field_offset; |
6725
da91efe96a93
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6266
diff
changeset
|
3367 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3368 |
113
ba764ed4b6f2
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52
diff
changeset
|
3369 JNIid* current = this; |
ba764ed4b6f2
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52
diff
changeset
|
3370 while (current != NULL) { |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3371 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3372 #ifdef ASSERT |
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3373 int o = current->offset(); |
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3374 if (current->is_static_field_id()) { |
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3375 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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3376 } |
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3377 #endif |
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3378 current = current->next(); |
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3379 } |
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3380 } |
0 | 3381 |
3382 | |
3383 #ifdef ASSERT | |
6725
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3384 void InstanceKlass::set_init_state(ClassState state) { |
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3385 bool good_state = is_shared() ? (_init_state <= state) |
113
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3386 : (_init_state < state); |
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3387 assert(good_state || state == allocated, "illegal state transition"); |
4739
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3388 _init_state = (u1)state; |
113
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3389 } |
0 | 3390 #endif |
3391 | |
3392 | |
3393 // RedefineClasses() support for previous versions: | |
3394 | |
6725
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3395 // Purge previous versions |
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3396 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3397 if (ik->previous_versions() != NULL) { |
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3398 // This klass has previous versions so see what we can cleanup |
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3399 // while it is safe to do so. |
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3400 |
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3401 int deleted_count = 0; // leave debugging breadcrumbs |
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3402 int live_count = 0; |
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3403 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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3404 ClassLoaderData::the_null_class_loader_data() : |
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3405 ik->class_loader_data(); |
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3406 |
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3407 // RC_TRACE macro has an embedded ResourceMark |
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3408 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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3409 ik->external_name(), ik->previous_versions()->length())); |
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3410 |
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3411 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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3412 // check the previous versions array |
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3413 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3414 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3415 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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3416 |
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3417 ConstantPool* pvcp = cp_ref; |
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3418 if (!pvcp->on_stack()) { |
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3419 // If the constant pool isn't on stack, none of the methods |
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3420 // are executing. Delete all the methods, the constant pool and |
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3421 // and this previous version node. |
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3422 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3423 if (method_refs != NULL) { |
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3424 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3425 Method* method = method_refs->at(j); |
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3426 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3427 method_refs->remove_at(j); |
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3428 // method will be freed with associated class. |
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3429 } |
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3430 } |
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3431 // Remove the constant pool |
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3432 delete pv_node; |
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3433 // Since we are traversing the array backwards, we don't have to |
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3434 // do anything special with the index. |
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3435 ik->previous_versions()->remove_at(i); |
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3436 deleted_count++; |
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|
3437 continue; |
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3438 } else { |
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3439 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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3440 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3441 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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3442 live_count++; |
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|
3443 } |
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3444 |
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3445 // At least one method is live in this previous version, clean out |
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3446 // the others or mark them as obsolete. |
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3447 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3448 if (method_refs != NULL) { |
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3449 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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3450 method_refs->length())); |
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3451 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3452 Method* method = method_refs->at(j); |
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3453 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3454 |
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3455 // Remove the emcp method if it's not executing |
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3456 // If it's been made obsolete by a redefinition of a non-emcp |
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3457 // method, mark it as obsolete but leave it to clean up later. |
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3458 if (!method->on_stack()) { |
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3459 method_refs->remove_at(j); |
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3460 } else if (emcp_method_count == 0) { |
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3461 method->set_is_obsolete(); |
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|
3462 } else { |
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3463 // RC_TRACE macro has an embedded ResourceMark |
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|
3464 RC_TRACE(0x00000200, |
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3465 ("purge: %s(%s): prev method @%d in version @%d is alive", |
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3466 method->name()->as_C_string(), |
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3467 method->signature()->as_C_string(), j, i)); |
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3468 } |
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|
3469 } |
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|
3470 } |
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|
3471 } |
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|
3472 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
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3473 RC_TRACE(0x00000200, |
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3474 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
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3475 deleted_count)); |
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|
3476 } |
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|
3477 } |
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|
3478 |
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|
3479 // External interface for use during class unloading. |
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3480 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
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3481 // Call with >0 emcp methods since they are not currently being redefined. |
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3482 purge_previous_versions_internal(ik, 1); |
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|
3483 } |
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|
3484 |
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|
3485 |
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3486 // Potentially add an information node that contains pointers to the |
0 | 3487 // interesting parts of the previous version of the_class. |
6725
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3488 // This is also where we clean out any unused references. |
977
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|
3489 // Note that while we delete nodes from the _previous_versions |
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|
3490 // array, we never delete the array itself until the klass is |
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|
3491 // unloaded. The has_been_redefined() query depends on that fact. |
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|
3492 // |
6725
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3493 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
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3494 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3495 assert(Thread::current()->is_VM_thread(), |
113
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|
3496 "only VMThread can add previous versions"); |
0 | 3497 |
3498 if (_previous_versions == NULL) { | |
3499 // This is the first previous version so make some space. | |
3500 // Start with 2 elements under the assumption that the class | |
3501 // won't be redefined much. | |
6197 | 3502 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3503 GrowableArray<PreviousVersionNode *>(2, true); |
3504 } | |
3505 | |
6725
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3506 ConstantPool* cp_ref = ikh->constants(); |
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3507 |
0 | 3508 // RC_TRACE macro has an embedded ResourceMark |
6725
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3509 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
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changeset
|
3510 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3511 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3512 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3513 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3514 // If the constant pool for this previous version of the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3515 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3516 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3517 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3518 // we still need to examine older previous versions below. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3519 Array<Method*>* old_methods = ikh->methods(); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3520 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3521 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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diff
changeset
|
3522 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3523 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3524 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3525 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
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|
3526 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3527 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3528 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3529 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3530 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
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8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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|
3531 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3532 for (int i = 0; i < old_methods->length(); i++) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3533 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3534 // this old method is EMCP. Save it only if it's on the stack |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
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|
3535 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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diff
changeset
|
3536 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3537 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
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|
3538 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3539 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3540 // no more EMCP methods so bail out now |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3541 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3542 } |
0 | 3543 } |
3544 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3545 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
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|
3546 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
3547 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3548 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3549 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
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|
3550 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3551 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3552 // Since the caller is the VMThread and we are at a safepoint, this |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3553 // is a good time to clear out unused references. |
0 | 3554 |
3555 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3556 _previous_versions->length())); | |
3557 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3558 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3559 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3560 |
3561 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3562 | |
3563 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3564 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3565 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3566 // clear out any matching EMCP method entries the hard way. |
3567 int local_count = 0; | |
3568 for (int i = 0; i < old_methods->length(); i++) { | |
3569 if (!emcp_methods->at(i)) { | |
3570 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3571 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3572 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3573 Symbol* m_signature = old_method->signature(); |
0 | 3574 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3575 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3576 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3577 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3578 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3579 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3580 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3581 if (method_refs == NULL) { |
3582 // We have run into a PreviousVersion generation where | |
3583 // all methods were made obsolete during that generation's | |
3584 // RedefineClasses() operation. At the time of that | |
3585 // operation, all EMCP methods were flushed so we don't | |
3586 // have to go back any further. | |
3587 // | |
3588 // A NULL method_refs is different than an empty method_refs. | |
3589 // We cannot infer any optimizations about older generations | |
3590 // from an empty method_refs for the current generation. | |
3591 break; | |
3592 } | |
3593 | |
3594 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3595 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3596 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3597 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3598 method->name() == m_name && |
0 | 3599 method->signature() == m_signature) { |
3600 // The current RedefineClasses() call has made all EMCP | |
3601 // versions of this method obsolete so mark it as obsolete | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3602 // and remove the reference. |
0 | 3603 RC_TRACE(0x00000400, |
3604 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3605 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3606 | |
3607 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3608 // Leave obsolete methods on the previous version list to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3609 // clean up later. |
0 | 3610 break; |
3611 } | |
3612 } | |
3613 | |
3614 // The previous loop may not find a matching EMCP method, but | |
3615 // that doesn't mean that we can optimize and not go any | |
3616 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3617 // method for this generation could have already been deleted, |
0 | 3618 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3619 // been deleted. |
0 | 3620 } |
3621 | |
3622 if (++local_count >= obsolete_method_count) { | |
3623 // no more obsolete methods so bail out now | |
3624 break; | |
3625 } | |
3626 } | |
3627 } | |
3628 } | |
3629 } // end add_previous_version() | |
3630 | |
3631 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3632 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3633 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3634 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3635 } // end has_previous_version() |
3636 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3637 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3638 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3639 Method* m = NULL; |
0 | 3640 if (idnum < methods()->length()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3641 m = methods()->at(idnum); |
0 | 3642 } |
3643 if (m == NULL || m->method_idnum() != idnum) { | |
3644 for (int index = 0; index < methods()->length(); ++index) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3645 m = methods()->at(index); |
0 | 3646 if (m->method_idnum() == idnum) { |
3647 return m; | |
3648 } | |
3649 } | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3650 // None found, return null for the caller to handle. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3651 return NULL; |
0 | 3652 } |
3653 return m; | |
3654 } | |
3655 | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3656 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3657 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3658 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3659 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3660 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3661 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3662 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3663 |
0 | 3664 |
3665 // Construct a PreviousVersionNode entry for the array hung off | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3666 // the InstanceKlass. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3667 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3668 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3669 |
3670 _prev_constant_pool = prev_constant_pool; | |
3671 _prev_EMCP_methods = prev_EMCP_methods; | |
3672 } | |
3673 | |
3674 | |
3675 // Destroy a PreviousVersionNode | |
3676 PreviousVersionNode::~PreviousVersionNode() { | |
3677 if (_prev_constant_pool != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3678 _prev_constant_pool = NULL; |
0 | 3679 } |
3680 | |
3681 if (_prev_EMCP_methods != NULL) { | |
3682 delete _prev_EMCP_methods; | |
3683 } | |
3684 } | |
3685 | |
3686 // Construct a helper for walking the previous versions array | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3687 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3688 _thread = thread; |
0 | 3689 _previous_versions = ik->previous_versions(); |
3690 _current_index = 0; | |
3691 _current_p = NULL; | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3692 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3693 } |
3694 | |
3695 | |
3696 // Return the interesting information for the next previous version | |
3697 // of the klass. Returns NULL if there are no more previous versions. | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3698 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3699 if (_previous_versions == NULL) { |
3700 // no previous versions so nothing to return | |
3701 return NULL; | |
3702 } | |
3703 | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3704 _current_p = NULL; // reset to NULL |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3705 _current_constant_pool_handle = NULL; |
0 | 3706 |
3707 int length = _previous_versions->length(); | |
3708 | |
3709 while (_current_index < length) { | |
3710 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3711 |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3712 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3713 // which keeps all the methods from being deallocated. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3714 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3715 _current_p = pv_node; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3716 return pv_node; |
0 | 3717 } |
3718 | |
3719 return NULL; | |
3720 } // end next_previous_version() |