Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlass.cpp @ 23905:cb4af293fe70 jdk8u101-b07
8153312: Constrain AppCDS behavior
Reviewed-by: iklam, acorn, mschoene
author | jiangli |
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date | Wed, 27 Apr 2016 14:41:55 -0400 |
parents | 50e62b688ddc |
children | f13e777eb255 |
rev | line source |
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0 | 1 /* |
23893 | 2 * Copyright (c) 1997, 2016, 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" | |
23893 | 28 #include "classfile/systemDictionaryShared.hpp" |
1972 | 29 #include "classfile/verifier.hpp" |
30 #include "classfile/vmSymbols.hpp" | |
31 #include "compiler/compileBroker.hpp" | |
32 #include "gc_implementation/shared/markSweep.inline.hpp" | |
33 #include "gc_interface/collectedHeap.inline.hpp" | |
34 #include "interpreter/oopMapCache.hpp" | |
35 #include "interpreter/rewriter.hpp" | |
36 #include "jvmtifiles/jvmti.h" | |
37 #include "memory/genOopClosures.inline.hpp" | |
7956 | 38 #include "memory/heapInspection.hpp" |
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39 #include "memory/iterator.inline.hpp" |
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40 #include "memory/metadataFactory.hpp" |
1972 | 41 #include "memory/oopFactory.hpp" |
3938 | 42 #include "oops/fieldStreams.hpp" |
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43 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 44 #include "oops/instanceKlass.hpp" |
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45 #include "oops/instanceMirrorKlass.hpp" |
1972 | 46 #include "oops/instanceOop.hpp" |
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47 #include "oops/klass.inline.hpp" |
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48 #include "oops/method.hpp" |
1972 | 49 #include "oops/oop.inline.hpp" |
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50 #include "oops/symbol.hpp" |
1972 | 51 #include "prims/jvmtiExport.hpp" |
52 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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53 #include "prims/jvmtiRedefineClasses.hpp" |
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54 #include "prims/jvmtiThreadState.hpp" |
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55 #include "prims/methodComparator.hpp" |
1972 | 56 #include "runtime/fieldDescriptor.hpp" |
57 #include "runtime/handles.inline.hpp" | |
58 #include "runtime/javaCalls.hpp" | |
59 #include "runtime/mutexLocker.hpp" | |
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60 #include "runtime/orderAccess.inline.hpp" |
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61 #include "runtime/thread.inline.hpp" |
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62 #include "services/classLoadingService.hpp" |
1972 | 63 #include "services/threadService.hpp" |
64 #include "utilities/dtrace.hpp" | |
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65 #include "utilities/macros.hpp" |
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66 #if INCLUDE_ALL_GCS |
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67 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 68 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
69 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
70 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
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71 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
1972 | 72 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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73 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 74 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
75 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
76 #include "oops/oop.pcgc.inline.hpp" | |
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77 #endif // INCLUDE_ALL_GCS |
1972 | 78 #ifdef COMPILER1 |
79 #include "c1/c1_Compiler.hpp" | |
80 #endif | |
0 | 81 |
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82 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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83 |
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84 #ifdef DTRACE_ENABLED |
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85 |
4006 | 86 #ifndef USDT2 |
87 | |
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88 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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89 char*, intptr_t, oop, intptr_t); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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103 char*, intptr_t, oop, intptr_t, int); |
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104 |
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105 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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106 { \ |
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107 char* data = NULL; \ |
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108 int len = 0; \ |
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109 Symbol* name = (clss)->name(); \ |
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110 if (name != NULL) { \ |
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111 data = (char*)name->bytes(); \ |
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112 len = name->utf8_length(); \ |
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113 } \ |
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114 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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115 data, len, (void *)(clss)->class_loader(), thread_type); \ |
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116 } |
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117 |
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118 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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119 { \ |
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120 char* data = NULL; \ |
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121 int len = 0; \ |
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122 Symbol* name = (clss)->name(); \ |
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123 if (name != NULL) { \ |
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124 data = (char*)name->bytes(); \ |
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125 len = name->utf8_length(); \ |
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126 } \ |
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127 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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128 data, len, (void *)(clss)->class_loader(), thread_type, wait); \ |
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129 } |
4006 | 130 #else /* USDT2 */ |
131 | |
132 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
133 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
134 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
135 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
136 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
137 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
138 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
139 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
140 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
141 { \ | |
142 char* data = NULL; \ | |
143 int len = 0; \ | |
144 Symbol* name = (clss)->name(); \ | |
145 if (name != NULL) { \ | |
146 data = (char*)name->bytes(); \ | |
147 len = name->utf8_length(); \ | |
148 } \ | |
149 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
150 data, len, (clss)->class_loader(), thread_type); \ | |
151 } | |
152 | |
153 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
154 { \ | |
155 char* data = NULL; \ | |
156 int len = 0; \ | |
157 Symbol* name = (clss)->name(); \ | |
158 if (name != NULL) { \ | |
159 data = (char*)name->bytes(); \ | |
160 len = name->utf8_length(); \ | |
161 } \ | |
162 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
163 data, len, (clss)->class_loader(), thread_type, wait); \ | |
164 } | |
165 #endif /* USDT2 */ | |
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166 |
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167 #else // ndef DTRACE_ENABLED |
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168 |
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169 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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170 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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171 |
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172 #endif // ndef DTRACE_ENABLED |
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173 |
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174 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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175 |
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176 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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177 ClassLoaderData* loader_data, |
8031 | 178 int vtable_len, |
179 int itable_len, | |
180 int static_field_size, | |
181 int nonstatic_oop_map_size, | |
182 ReferenceType rt, | |
183 AccessFlags access_flags, | |
184 Symbol* name, | |
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185 Klass* super_klass, |
8031 | 186 bool is_anonymous, |
187 TRAPS) { | |
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188 |
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189 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 190 access_flags.is_interface(), is_anonymous); |
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191 |
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192 // Allocation |
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193 InstanceKlass* ik; |
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194 if (rt == REF_NONE) { |
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195 if (name == vmSymbols::java_lang_Class()) { |
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196 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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197 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 198 access_flags, is_anonymous); |
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199 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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200 (SystemDictionary::ClassLoader_klass_loaded() && |
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201 super_klass != NULL && |
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202 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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203 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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204 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 205 access_flags, is_anonymous); |
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206 } else { |
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207 // normal class |
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208 ik = new (loader_data, size, THREAD) InstanceKlass( |
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209 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 210 access_flags, is_anonymous); |
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211 } |
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212 } else { |
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213 // reference klass |
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214 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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215 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 216 access_flags, is_anonymous); |
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217 } |
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218 |
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219 // Check for pending exception before adding to the loader data and incrementing |
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220 // class count. Can get OOM here. |
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221 if (HAS_PENDING_EXCEPTION) { |
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222 return NULL; |
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223 } |
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224 |
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225 // Add all classes to our internal class loader list here, |
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226 // including classes in the bootstrap (NULL) class loader. |
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227 loader_data->add_class(ik); |
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228 |
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229 Atomic::inc(&_total_instanceKlass_count); |
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230 return ik; |
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231 } |
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232 |
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233 |
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234 // copy method ordering from resource area to Metaspace |
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235 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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236 if (m != NULL) { |
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237 // allocate a new array and copy contents (memcpy?) |
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238 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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239 for (int i = 0; i < m->length(); i++) { |
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240 _method_ordering->at_put(i, m->at(i)); |
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241 } |
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242 } else { |
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243 _method_ordering = Universe::the_empty_int_array(); |
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244 } |
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245 } |
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246 |
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247 // create a new array of vtable_indices for default methods |
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248 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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249 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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250 assert(default_vtable_indices() == NULL, "only create once"); |
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251 set_default_vtable_indices(vtable_indices); |
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252 return vtable_indices; |
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253 } |
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254 |
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255 InstanceKlass::InstanceKlass(int vtable_len, |
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256 int itable_len, |
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257 int static_field_size, |
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258 int nonstatic_oop_map_size, |
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259 ReferenceType rt, |
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260 AccessFlags access_flags, |
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261 bool is_anonymous) { |
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262 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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263 |
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264 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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265 access_flags.is_interface(), is_anonymous); |
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266 |
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267 set_vtable_length(vtable_len); |
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268 set_itable_length(itable_len); |
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269 set_static_field_size(static_field_size); |
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270 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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271 set_access_flags(access_flags); |
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272 _misc_flags = 0; // initialize to zero |
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273 set_is_anonymous(is_anonymous); |
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274 assert(size() == iksize, "wrong size for object"); |
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275 |
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276 set_array_klasses(NULL); |
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277 set_methods(NULL); |
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278 set_method_ordering(NULL); |
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279 set_default_methods(NULL); |
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280 set_default_vtable_indices(NULL); |
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281 set_local_interfaces(NULL); |
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282 set_transitive_interfaces(NULL); |
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283 init_implementor(); |
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284 set_fields(NULL, 0); |
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285 set_constants(NULL); |
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286 set_class_loader_data(NULL); |
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287 set_source_file_name_index(0); |
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288 set_source_debug_extension(NULL, 0); |
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289 set_array_name(NULL); |
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290 set_inner_classes(NULL); |
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291 set_static_oop_field_count(0); |
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292 set_nonstatic_field_size(0); |
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293 set_is_marked_dependent(false); |
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294 set_has_unloaded_dependent(false); |
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295 set_init_state(InstanceKlass::allocated); |
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296 set_init_thread(NULL); |
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297 set_reference_type(rt); |
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298 set_oop_map_cache(NULL); |
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299 set_jni_ids(NULL); |
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300 set_osr_nmethods_head(NULL); |
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301 set_breakpoints(NULL); |
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302 init_previous_versions(); |
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303 set_generic_signature_index(0); |
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304 release_set_methods_jmethod_ids(NULL); |
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305 set_annotations(NULL); |
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306 set_jvmti_cached_class_field_map(NULL); |
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307 set_initial_method_idnum(0); |
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308 _dependencies = NULL; |
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309 set_jvmti_cached_class_field_map(NULL); |
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310 set_cached_class_file(NULL); |
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311 set_initial_method_idnum(0); |
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312 set_minor_version(0); |
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313 set_major_version(0); |
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314 NOT_PRODUCT(_verify_count = 0;) |
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315 |
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316 // initialize the non-header words to zero |
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317 intptr_t* p = (intptr_t*)this; |
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318 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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319 p[index] = NULL_WORD; |
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320 } |
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321 |
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322 // Set temporary value until parseClassFile updates it with the real instance |
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323 // size. |
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324 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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325 } |
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326 |
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327 |
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328 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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329 Array<Method*>* methods) { |
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330 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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331 !methods->is_shared()) { |
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332 for (int i = 0; i < methods->length(); i++) { |
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333 Method* method = methods->at(i); |
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334 if (method == NULL) continue; // maybe null if error processing |
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335 // Only want to delete methods that are not executing for RedefineClasses. |
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336 // The previous version will point to them so they're not totally dangling |
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337 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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338 MetadataFactory::free_metadata(loader_data, method); |
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339 } |
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340 MetadataFactory::free_array<Method*>(loader_data, methods); |
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341 } |
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342 } |
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343 |
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344 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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345 Klass* super_klass, |
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346 Array<Klass*>* local_interfaces, |
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347 Array<Klass*>* transitive_interfaces) { |
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348 // Only deallocate transitive interfaces if not empty, same as super class |
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349 // or same as local interfaces. See code in parseClassFile. |
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350 Array<Klass*>* ti = transitive_interfaces; |
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351 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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352 // check that the interfaces don't come from super class |
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353 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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354 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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355 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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356 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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357 } |
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358 } |
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359 |
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360 // local interfaces can be empty |
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361 if (local_interfaces != Universe::the_empty_klass_array() && |
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362 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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363 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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364 } |
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365 } |
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366 |
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367 // This function deallocates the metadata and C heap pointers that the |
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368 // InstanceKlass points to. |
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369 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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370 |
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371 // Orphan the mirror first, CMS thinks it's still live. |
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372 if (java_mirror() != NULL) { |
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373 java_lang_Class::set_klass(java_mirror(), NULL); |
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374 } |
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375 |
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376 // Need to take this class off the class loader data list. |
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377 loader_data->remove_class(this); |
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378 |
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379 // The array_klass for this class is created later, after error handling. |
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380 // For class redefinition, we keep the original class so this scratch class |
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381 // doesn't have an array class. Either way, assert that there is nothing |
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382 // to deallocate. |
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383 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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384 |
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385 // Release C heap allocated data that this might point to, which includes |
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386 // reference counting symbol names. |
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387 release_C_heap_structures(); |
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388 |
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389 deallocate_methods(loader_data, methods()); |
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390 set_methods(NULL); |
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391 |
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392 if (method_ordering() != NULL && |
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393 method_ordering() != Universe::the_empty_int_array() && |
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394 !method_ordering()->is_shared()) { |
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395 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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396 } |
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397 set_method_ordering(NULL); |
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398 |
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399 // default methods can be empty |
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400 if (default_methods() != NULL && |
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401 default_methods() != Universe::the_empty_method_array() && |
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402 !default_methods()->is_shared()) { |
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403 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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404 } |
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405 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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406 set_default_methods(NULL); |
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407 |
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408 // default methods vtable indices can be empty |
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409 if (default_vtable_indices() != NULL && |
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410 !default_vtable_indices()->is_shared()) { |
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411 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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412 } |
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413 set_default_vtable_indices(NULL); |
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414 |
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415 |
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416 // This array is in Klass, but remove it with the InstanceKlass since |
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417 // this place would be the only caller and it can share memory with transitive |
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418 // interfaces. |
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419 if (secondary_supers() != NULL && |
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420 secondary_supers() != Universe::the_empty_klass_array() && |
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421 secondary_supers() != transitive_interfaces() && |
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422 !secondary_supers()->is_shared()) { |
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423 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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424 } |
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425 set_secondary_supers(NULL); |
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426 |
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427 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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428 set_transitive_interfaces(NULL); |
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429 set_local_interfaces(NULL); |
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430 |
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431 if (fields() != NULL && !fields()->is_shared()) { |
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432 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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433 } |
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434 set_fields(NULL, 0); |
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435 |
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436 // If a method from a redefined class is using this constant pool, don't |
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437 // delete it, yet. The new class's previous version will point to this. |
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438 if (constants() != NULL) { |
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439 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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440 if (!constants()->is_shared()) { |
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441 MetadataFactory::free_metadata(loader_data, constants()); |
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442 } |
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443 // Delete any cached resolution errors for the constant pool |
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444 SystemDictionary::delete_resolution_error(constants()); |
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445 |
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446 set_constants(NULL); |
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447 } |
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448 |
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449 if (inner_classes() != NULL && |
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450 inner_classes() != Universe::the_empty_short_array() && |
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451 !inner_classes()->is_shared()) { |
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452 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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453 } |
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454 set_inner_classes(NULL); |
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455 |
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456 // We should deallocate the Annotations instance if it's not in shared spaces. |
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457 if (annotations() != NULL && !annotations()->is_shared()) { |
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458 MetadataFactory::free_metadata(loader_data, annotations()); |
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459 } |
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460 set_annotations(NULL); |
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461 } |
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462 |
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463 bool InstanceKlass::should_be_initialized() const { |
0 | 464 return !is_initialized(); |
465 } | |
466 | |
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467 klassVtable* InstanceKlass::vtable() const { |
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468 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 469 } |
470 | |
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471 klassItable* InstanceKlass::itable() const { |
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472 return new klassItable(instanceKlassHandle(this)); |
0 | 473 } |
474 | |
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475 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 476 if (!EagerInitialization) return; |
477 | |
478 if (this->is_not_initialized()) { | |
479 // abort if the the class has a class initializer | |
480 if (this->class_initializer() != NULL) return; | |
481 | |
482 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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483 Klass* super = this->super(); |
0 | 484 if (super == NULL) return; |
485 | |
486 // abort if the super class should be initialized | |
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487 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 488 |
489 // call body to expose the this pointer | |
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490 instanceKlassHandle this_oop(thread, this); |
0 | 491 eager_initialize_impl(this_oop); |
492 } | |
493 } | |
494 | |
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495 // JVMTI spec thinks there are signers and protection domain in the |
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496 // instanceKlass. These accessors pretend these fields are there. |
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497 // The hprof specification also thinks these fields are in InstanceKlass. |
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498 oop InstanceKlass::protection_domain() const { |
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499 // return the protection_domain from the mirror |
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500 return java_lang_Class::protection_domain(java_mirror()); |
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501 } |
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502 |
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503 // To remove these from requires an incompatible change and CCC request. |
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504 objArrayOop InstanceKlass::signers() const { |
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505 // return the signers from the mirror |
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506 return java_lang_Class::signers(java_mirror()); |
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507 } |
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508 |
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509 oop InstanceKlass::init_lock() const { |
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510 // return the init lock from the mirror |
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511 oop lock = java_lang_Class::init_lock(java_mirror()); |
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512 // Prevent reordering with any access of initialization state |
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513 OrderAccess::loadload(); |
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514 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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515 "only fully initialized state can have a null lock"); |
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516 return lock; |
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517 } |
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518 |
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519 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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520 // threads to get this lock will see a null lock and will not lock. |
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521 // That's okay because they all check for initialized state after getting |
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522 // the lock and return. |
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523 void InstanceKlass::fence_and_clear_init_lock() { |
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524 // make sure previous stores are all done, notably the init_state. |
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525 OrderAccess::storestore(); |
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526 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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527 assert(!is_not_initialized(), "class must be initialized now"); |
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528 } |
0 | 529 |
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530 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 531 EXCEPTION_MARK; |
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532 oop init_lock = this_oop->init_lock(); |
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533 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 534 |
535 // abort if someone beat us to the initialization | |
536 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
537 | |
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538 ClassState old_state = this_oop->init_state(); |
0 | 539 link_class_impl(this_oop, true, THREAD); |
540 if (HAS_PENDING_EXCEPTION) { | |
541 CLEAR_PENDING_EXCEPTION; | |
542 // Abort if linking the class throws an exception. | |
543 | |
544 // Use a test to avoid redundantly resetting the state if there's | |
545 // no change. Set_init_state() asserts that state changes make | |
546 // progress, whereas here we might just be spinning in place. | |
547 if( old_state != this_oop->_init_state ) | |
548 this_oop->set_init_state (old_state); | |
549 } else { | |
550 // linking successfull, mark class as initialized | |
551 this_oop->set_init_state (fully_initialized); | |
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552 this_oop->fence_and_clear_init_lock(); |
0 | 553 // trace |
554 if (TraceClassInitialization) { | |
555 ResourceMark rm(THREAD); | |
556 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
557 } | |
558 } | |
559 } | |
560 | |
561 | |
562 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
563 // process. The step comments refers to the procedure described in that section. | |
564 // Note: implementation moved to static method to expose the this pointer. | |
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565 void InstanceKlass::initialize(TRAPS) { |
0 | 566 if (this->should_be_initialized()) { |
567 HandleMark hm(THREAD); | |
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568 instanceKlassHandle this_oop(THREAD, this); |
0 | 569 initialize_impl(this_oop, CHECK); |
570 // Note: at this point the class may be initialized | |
571 // OR it may be in the state of being initialized | |
572 // in case of recursive initialization! | |
573 } else { | |
574 assert(is_initialized(), "sanity check"); | |
575 } | |
576 } | |
577 | |
578 | |
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579 bool InstanceKlass::verify_code( |
0 | 580 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
581 // 1) Verify the bytecodes | |
582 Verifier::Mode mode = | |
583 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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584 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 585 } |
586 | |
587 | |
588 // Used exclusively by the shared spaces dump mechanism to prevent | |
589 // classes mapped into the shared regions in new VMs from appearing linked. | |
590 | |
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591 void InstanceKlass::unlink_class() { |
0 | 592 assert(is_linked(), "must be linked"); |
593 _init_state = loaded; | |
594 } | |
595 | |
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596 void InstanceKlass::link_class(TRAPS) { |
0 | 597 assert(is_loaded(), "must be loaded"); |
598 if (!is_linked()) { | |
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599 HandleMark hm(THREAD); |
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600 instanceKlassHandle this_oop(THREAD, this); |
0 | 601 link_class_impl(this_oop, true, CHECK); |
602 } | |
603 } | |
604 | |
605 // Called to verify that a class can link during initialization, without | |
606 // throwing a VerifyError. | |
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607 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 608 assert(is_loaded(), "must be loaded"); |
609 if (!is_linked()) { | |
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610 HandleMark hm(THREAD); |
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611 instanceKlassHandle this_oop(THREAD, this); |
0 | 612 link_class_impl(this_oop, false, CHECK_false); |
613 } | |
614 return is_linked(); | |
615 } | |
616 | |
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617 bool InstanceKlass::link_class_impl( |
0 | 618 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
619 // check for error state | |
620 if (this_oop->is_in_error_state()) { | |
621 ResourceMark rm(THREAD); | |
622 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
623 this_oop->external_name(), false); | |
624 } | |
625 // return if already verified | |
626 if (this_oop->is_linked()) { | |
627 return true; | |
628 } | |
629 | |
630 // Timing | |
631 // timer handles recursion | |
632 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
633 JavaThread* jt = (JavaThread*)THREAD; | |
634 | |
635 // link super class before linking this class | |
636 instanceKlassHandle super(THREAD, this_oop->super()); | |
637 if (super.not_null()) { | |
638 if (super->is_interface()) { // check if super class is an interface | |
639 ResourceMark rm(THREAD); | |
640 Exceptions::fthrow( | |
641 THREAD_AND_LOCATION, | |
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642 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 643 "class %s has interface %s as super class", |
644 this_oop->external_name(), | |
645 super->external_name() | |
646 ); | |
647 return false; | |
648 } | |
649 | |
650 link_class_impl(super, throw_verifyerror, CHECK_false); | |
651 } | |
652 | |
653 // link all interfaces implemented by this class before linking this class | |
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654 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 655 int num_interfaces = interfaces->length(); |
656 for (int index = 0; index < num_interfaces; index++) { | |
657 HandleMark hm(THREAD); | |
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658 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 659 link_class_impl(ih, throw_verifyerror, CHECK_false); |
660 } | |
661 | |
662 // in case the class is linked in the process of linking its superclasses | |
663 if (this_oop->is_linked()) { | |
664 return true; | |
665 } | |
666 | |
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667 // trace only the link time for this klass that includes |
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668 // the verification time |
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669 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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670 ClassLoader::perf_class_link_selftime(), |
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671 ClassLoader::perf_classes_linked(), |
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672 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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673 jt->get_thread_stat()->perf_timers_addr(), |
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674 PerfClassTraceTime::CLASS_LINK); |
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675 |
0 | 676 // verification & rewriting |
677 { | |
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678 oop init_lock = this_oop->init_lock(); |
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679 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 680 // rewritten will have been set if loader constraint error found |
681 // on an earlier link attempt | |
682 // don't verify or rewrite if already rewritten | |
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683 |
0 | 684 if (!this_oop->is_linked()) { |
685 if (!this_oop->is_rewritten()) { | |
686 { | |
687 // Timer includes any side effects of class verification (resolution, | |
688 // etc), but not recursive entry into verify_code(). | |
875
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689 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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690 ClassLoader::perf_class_verify_selftime(), |
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691 ClassLoader::perf_classes_verified(), |
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692 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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693 jt->get_thread_stat()->perf_timers_addr(), |
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694 PerfClassTraceTime::CLASS_VERIFY); |
0 | 695 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
696 if (!verify_ok) { | |
697 return false; | |
698 } | |
699 } | |
700 | |
701 // Just in case a side-effect of verify linked this class already | |
702 // (which can sometimes happen since the verifier loads classes | |
703 // using custom class loaders, which are free to initialize things) | |
704 if (this_oop->is_linked()) { | |
705 return true; | |
706 } | |
707 | |
708 // also sets rewritten | |
709 this_oop->rewrite_class(CHECK_false); | |
23893 | 710 } else if (this_oop()->is_shared()) { |
711 ResourceMark rm(THREAD); | |
712 char* message_buffer; // res-allocated by check_verification_dependencies | |
713 Handle loader = this_oop()->class_loader(); | |
714 Handle pd = this_oop()->protection_domain(); | |
715 bool verified = SystemDictionaryShared::check_verification_dependencies(this_oop(), | |
716 loader, pd, &message_buffer, THREAD); | |
717 if (!verified) { | |
718 THROW_MSG_(vmSymbols::java_lang_VerifyError(), message_buffer, false); | |
719 } | |
0 | 720 } |
721 | |
3748 | 722 // relocate jsrs and link methods after they are all rewritten |
7459
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723 this_oop->link_methods(CHECK_false); |
3748 | 724 |
0 | 725 // Initialize the vtable and interface table after |
726 // methods have been rewritten since rewrite may | |
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727 // fabricate new Method*s. |
0 | 728 // also does loader constraint checking |
23905 | 729 // |
730 // Initialize_vtable and initialize_itable need to be rerun for | |
731 // a shared class if the class is not loaded by the NULL classloader. | |
732 ClassLoaderData * loader_data = this_oop->class_loader_data(); | |
733 if (!(this_oop()->is_shared() && | |
734 loader_data->is_the_null_class_loader_data())) { | |
0 | 735 ResourceMark rm(THREAD); |
736 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
737 this_oop->itable()->initialize_itable(true, CHECK_false); | |
738 } | |
739 #ifdef ASSERT | |
740 else { | |
741 ResourceMark rm(THREAD); | |
742 this_oop->vtable()->verify(tty, true); | |
743 // In case itable verification is ever added. | |
744 // this_oop->itable()->verify(tty, true); | |
745 } | |
746 #endif | |
747 this_oop->set_init_state(linked); | |
748 if (JvmtiExport::should_post_class_prepare()) { | |
749 Thread *thread = THREAD; | |
750 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
751 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
752 } | |
753 } | |
754 } | |
755 return true; | |
756 } | |
757 | |
758 | |
759 // Rewrite the byte codes of all of the methods of a class. | |
760 // The rewriter must be called exactly once. Rewriting must happen after | |
761 // verification but before the first method of the class is executed. | |
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762 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 763 assert(is_loaded(), "must be loaded"); |
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764 instanceKlassHandle this_oop(THREAD, this); |
0 | 765 if (this_oop->is_rewritten()) { |
766 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
767 return; | |
768 } | |
3748 | 769 Rewriter::rewrite(this_oop, CHECK); |
0 | 770 this_oop->set_rewritten(); |
771 } | |
772 | |
3748 | 773 // Now relocate and link method entry points after class is rewritten. |
774 // This is outside is_rewritten flag. In case of an exception, it can be | |
775 // executed more than once. | |
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776 void InstanceKlass::link_methods(TRAPS) { |
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777 int len = methods()->length(); |
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778 for (int i = len-1; i >= 0; i--) { |
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779 methodHandle m(THREAD, methods()->at(i)); |
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780 |
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781 // Set up method entry points for compiler and interpreter . |
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782 m->link_method(m, CHECK); |
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783 |
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784 // This is for JVMTI and unrelated to relocator but the last thing we do |
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785 #ifdef ASSERT |
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786 if (StressMethodComparator) { |
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787 ResourceMark rm(THREAD); |
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788 static int nmc = 0; |
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789 for (int j = i; j >= 0 && j >= i-4; j--) { |
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790 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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791 bool z = MethodComparator::methods_EMCP(m(), |
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792 methods()->at(j)); |
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793 if (j == i && !z) { |
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794 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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795 assert(z, "method must compare equal to itself"); |
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796 } |
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797 } |
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798 } |
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799 #endif //ASSERT |
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800 } |
3748 | 801 } |
802 | |
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803 // Eagerly initialize superinterfaces that declare default methods (concrete instance: any access) |
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804 void InstanceKlass::initialize_super_interfaces(instanceKlassHandle this_oop, TRAPS) { |
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805 if (this_oop->has_default_methods()) { |
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806 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { |
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807 Klass* iface = this_oop->local_interfaces()->at(i); |
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808 InstanceKlass* ik = InstanceKlass::cast(iface); |
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809 if (ik->should_be_initialized()) { |
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810 if (ik->has_default_methods()) { |
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811 ik->initialize_super_interfaces(ik, THREAD); |
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812 } |
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813 // Only initialize() interfaces that "declare" concrete methods. |
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814 // has_default_methods drives searching superinterfaces since it |
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815 // means has_default_methods in its superinterface hierarchy |
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816 if (!HAS_PENDING_EXCEPTION && ik->declares_default_methods()) { |
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817 ik->initialize(THREAD); |
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818 } |
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819 if (HAS_PENDING_EXCEPTION) { |
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820 Handle e(THREAD, PENDING_EXCEPTION); |
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821 CLEAR_PENDING_EXCEPTION; |
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822 { |
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823 EXCEPTION_MARK; |
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824 // Locks object, set state, and notify all waiting threads |
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825 this_oop->set_initialization_state_and_notify( |
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826 initialization_error, THREAD); |
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827 |
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828 // ignore any exception thrown, superclass initialization error is |
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829 // thrown below |
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830 CLEAR_PENDING_EXCEPTION; |
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831 } |
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832 THROW_OOP(e()); |
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833 } |
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834 } |
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835 } |
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836 } |
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837 } |
0 | 838 |
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839 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 840 // Make sure klass is linked (verified) before initialization |
841 // A class could already be verified, since it has been reflected upon. | |
842 this_oop->link_class(CHECK); | |
843 | |
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844 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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845 |
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846 bool wait = false; |
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847 |
0 | 848 // refer to the JVM book page 47 for description of steps |
849 // Step 1 | |
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850 { |
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851 oop init_lock = this_oop->init_lock(); |
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852 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 853 |
854 Thread *self = THREAD; // it's passed the current thread | |
855 | |
856 // Step 2 | |
857 // If we were to use wait() instead of waitInterruptibly() then | |
858 // we might end up throwing IE from link/symbol resolution sites | |
859 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
860 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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861 wait = true; |
0 | 862 ol.waitUninterruptibly(CHECK); |
863 } | |
864 | |
865 // Step 3 | |
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866 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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867 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 868 return; |
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869 } |
0 | 870 |
871 // Step 4 | |
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872 if (this_oop->is_initialized()) { |
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873 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 874 return; |
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875 } |
0 | 876 |
877 // Step 5 | |
878 if (this_oop->is_in_error_state()) { | |
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879 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 880 ResourceMark rm(THREAD); |
881 const char* desc = "Could not initialize class "; | |
882 const char* className = this_oop->external_name(); | |
883 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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884 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 885 if (NULL == message) { |
886 // Out of memory: can't create detailed error message | |
887 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
888 } else { | |
889 jio_snprintf(message, msglen, "%s%s", desc, className); | |
890 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
891 } | |
892 } | |
893 | |
894 // Step 6 | |
895 this_oop->set_init_state(being_initialized); | |
896 this_oop->set_init_thread(self); | |
897 } | |
898 | |
899 // Step 7 | |
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900 Klass* super_klass = this_oop->super(); |
6983 | 901 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
902 super_klass->initialize(THREAD); | |
0 | 903 |
904 if (HAS_PENDING_EXCEPTION) { | |
905 Handle e(THREAD, PENDING_EXCEPTION); | |
906 CLEAR_PENDING_EXCEPTION; | |
907 { | |
908 EXCEPTION_MARK; | |
909 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
910 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
911 } | |
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912 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 913 THROW_OOP(e()); |
914 } | |
915 } | |
916 | |
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917 // Recursively initialize any superinterfaces that declare default methods |
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918 // Only need to recurse if has_default_methods which includes declaring and |
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919 // inheriting default methods |
6934 | 920 if (this_oop->has_default_methods()) { |
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921 this_oop->initialize_super_interfaces(this_oop, CHECK); |
6934 | 922 } |
923 | |
0 | 924 // Step 8 |
925 { | |
926 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
927 JavaThread* jt = (JavaThread*)THREAD; | |
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928 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 929 // Timer includes any side effects of class initialization (resolution, |
930 // etc), but not recursive entry into call_class_initializer(). | |
875
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931 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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932 ClassLoader::perf_class_init_selftime(), |
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933 ClassLoader::perf_classes_inited(), |
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934 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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935 jt->get_thread_stat()->perf_timers_addr(), |
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936 PerfClassTraceTime::CLASS_CLINIT); |
0 | 937 this_oop->call_class_initializer(THREAD); |
938 } | |
939 | |
940 // Step 9 | |
941 if (!HAS_PENDING_EXCEPTION) { | |
942 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
943 { ResourceMark rm(THREAD); | |
944 debug_only(this_oop->vtable()->verify(tty, true);) | |
945 } | |
946 } | |
947 else { | |
948 // Step 10 and 11 | |
949 Handle e(THREAD, PENDING_EXCEPTION); | |
950 CLEAR_PENDING_EXCEPTION; | |
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951 // JVMTI has already reported the pending exception |
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952 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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953 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 954 { |
955 EXCEPTION_MARK; | |
956 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
957 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
23007
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958 // JVMTI has already reported the pending exception |
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959 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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960 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 961 } |
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962 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 963 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 964 THROW_OOP(e()); |
965 } else { | |
966 JavaCallArguments args(e); | |
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967 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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968 vmSymbols::throwable_void_signature(), |
0 | 969 &args); |
970 } | |
971 } | |
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972 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 973 } |
974 | |
975 | |
976 // Note: implementation moved to static method to expose the this pointer. | |
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977 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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978 instanceKlassHandle kh(THREAD, this); |
0 | 979 set_initialization_state_and_notify_impl(kh, state, CHECK); |
980 } | |
981 | |
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982 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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983 oop init_lock = this_oop->init_lock(); |
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984 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 985 this_oop->set_init_state(state); |
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986 this_oop->fence_and_clear_init_lock(); |
0 | 987 ol.notify_all(CHECK); |
988 } | |
989 | |
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990 // The embedded _implementor field can only record one implementor. |
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991 // When there are more than one implementors, the _implementor field |
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992 // is set to the interface Klass* itself. Following are the possible |
5998
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993 // values for the _implementor field: |
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994 // NULL - no implementor |
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995 // implementor Klass* - one implementor |
5998
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996 // self - more than one implementor |
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997 // |
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998 // The _implementor field only exists for interfaces. |
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999 void InstanceKlass::add_implementor(Klass* k) { |
0 | 1000 assert(Compile_lock->owned_by_self(), ""); |
5998
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1001 assert(is_interface(), "not interface"); |
0 | 1002 // Filter out my subinterfaces. |
1003 // (Note: Interfaces are never on the subklass list.) | |
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1004 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 1005 |
1006 // Filter out subclasses whose supers already implement me. | |
1007 // (Note: CHA must walk subclasses of direct implementors | |
1008 // in order to locate indirect implementors.) | |
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1009 Klass* sk = InstanceKlass::cast(k)->super(); |
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1010 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 1011 // We only need to check one immediate superclass, since the |
1012 // implements_interface query looks at transitive_interfaces. | |
1013 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
1014 return; | |
1015 | |
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1016 Klass* ik = implementor(); |
5998
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1017 if (ik == NULL) { |
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1018 set_implementor(k); |
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1019 } else if (ik != this) { |
5998
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1020 // There is already an implementor. Use itself as an indicator of |
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1021 // more than one implementors. |
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1022 set_implementor(this); |
0 | 1023 } |
1024 | |
1025 // The implementor also implements the transitive_interfaces | |
1026 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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1027 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 1028 } |
1029 } | |
1030 | |
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1031 void InstanceKlass::init_implementor() { |
5998
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1032 if (is_interface()) { |
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1033 set_implementor(NULL); |
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1034 } |
0 | 1035 } |
1036 | |
1037 | |
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1038 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1039 // link this class into the implementors list of every interface it implements |
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1040 Klass* this_as_klass_oop = this; |
0 | 1041 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1042 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1043 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1044 assert(interf->is_interface(), "expected interface"); |
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1045 interf->add_implementor(this_as_klass_oop); |
0 | 1046 } |
1047 } | |
1048 | |
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1049 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1050 if (is_interface()) |
1051 return false; | |
1052 else | |
1053 return Klass::can_be_primary_super_slow(); | |
1054 } | |
1055 | |
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1056 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1057 // The secondaries are the implemented interfaces. |
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1058 InstanceKlass* ik = InstanceKlass::cast(this); |
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1059 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1060 int num_secondaries = num_extra_slots + interfaces->length(); |
1061 if (num_secondaries == 0) { | |
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1062 // Must share this for correct bootstrapping! |
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1063 set_secondary_supers(Universe::the_empty_klass_array()); |
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1064 return NULL; |
0 | 1065 } else if (num_extra_slots == 0) { |
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1066 // The secondary super list is exactly the same as the transitive interfaces. |
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1067 // Redefine classes has to be careful not to delete this! |
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1068 set_secondary_supers(interfaces); |
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1069 return NULL; |
0 | 1070 } else { |
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1071 // Copy transitive interfaces to a temporary growable array to be constructed |
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1072 // into the secondary super list with extra slots. |
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1073 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1074 for (int i = 0; i < interfaces->length(); i++) { |
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1075 secondaries->push(interfaces->at(i)); |
0 | 1076 } |
1077 return secondaries; | |
1078 } | |
1079 } | |
1080 | |
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1081 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1082 if (k->is_interface()) { |
0 | 1083 return implements_interface(k); |
1084 } else { | |
1085 return Klass::compute_is_subtype_of(k); | |
1086 } | |
1087 } | |
1088 | |
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1089 bool InstanceKlass::implements_interface(Klass* k) const { |
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1090 if (this == k) return true; |
6983 | 1091 assert(k->is_interface(), "should be an interface class"); |
0 | 1092 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1093 if (transitive_interfaces()->at(i) == k) { |
0 | 1094 return true; |
1095 } | |
1096 } | |
1097 return false; | |
1098 } | |
1099 | |
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1100 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1101 // Verify direct super interface |
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1102 if (this == k) return true; |
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1103 assert(k->is_interface(), "should be an interface class"); |
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1104 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1105 if (local_interfaces()->at(i) == k) { |
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1106 return true; |
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1107 } |
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1108 } |
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1109 return false; |
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1110 } |
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1111 |
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1112 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1113 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1114 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1115 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1116 JvmtiExport::post_array_size_exhausted(); |
0 | 1117 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1118 } | |
1119 int size = objArrayOopDesc::object_size(length); | |
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1120 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1121 KlassHandle h_ak (THREAD, ak); |
1122 objArrayOop o = | |
1123 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1124 return o; | |
1125 } | |
1126 | |
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1127 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1128 if (TraceFinalizerRegistration) { |
1129 tty->print("Registered "); | |
1130 i->print_value_on(tty); | |
1131 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1132 } | |
1133 instanceHandle h_i(THREAD, i); | |
1134 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1135 JavaValue result(T_VOID); | |
1136 JavaCallArguments args(h_i); | |
1137 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1138 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1139 return h_i(); | |
1140 } | |
1141 | |
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1142 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1143 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1144 int size = size_helper(); // Query before forming handle. | |
1145 | |
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1146 KlassHandle h_k(THREAD, this); |
0 | 1147 |
1148 instanceOop i; | |
1149 | |
1150 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1151 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1152 i = register_finalizer(i, CHECK_NULL); | |
1153 } | |
1154 return i; | |
1155 } | |
1156 | |
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1157 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1158 if (is_interface() || is_abstract()) { |
1159 ResourceMark rm(THREAD); | |
1160 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1161 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1162 } | |
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1163 if (this == SystemDictionary::Class_klass()) { |
0 | 1164 ResourceMark rm(THREAD); |
1165 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1166 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1167 } | |
1168 } | |
1169 | |
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1170 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1171 instanceKlassHandle this_oop(THREAD, this); |
0 | 1172 return array_klass_impl(this_oop, or_null, n, THREAD); |
1173 } | |
1174 | |
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1175 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1176 if (this_oop->array_klasses() == NULL) { |
1177 if (or_null) return NULL; | |
1178 | |
1179 ResourceMark rm; | |
1180 JavaThread *jt = (JavaThread *)THREAD; | |
1181 { | |
1182 // Atomic creation of array_klasses | |
1183 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1184 MutexLocker ma(MultiArray_lock, THREAD); | |
1185 | |
1186 // Check if update has already taken place | |
1187 if (this_oop->array_klasses() == NULL) { | |
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1188 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1189 this_oop->set_array_klasses(k); |
1190 } | |
1191 } | |
1192 } | |
1193 // _this will always be set at this point | |
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1194 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1195 if (or_null) { |
1196 return oak->array_klass_or_null(n); | |
1197 } | |
1198 return oak->array_klass(n, CHECK_NULL); | |
1199 } | |
1200 | |
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1201 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1202 return array_klass_impl(or_null, 1, THREAD); |
1203 } | |
1204 | |
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1205 void InstanceKlass::call_class_initializer(TRAPS) { |
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1206 instanceKlassHandle ik (THREAD, this); |
0 | 1207 call_class_initializer_impl(ik, THREAD); |
1208 } | |
1209 | |
1210 static int call_class_initializer_impl_counter = 0; // for debugging | |
1211 | |
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1212 Method* InstanceKlass::class_initializer() { |
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1213 Method* clinit = find_method( |
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1214 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1215 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1216 return clinit; |
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1217 } |
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1218 return NULL; |
0 | 1219 } |
1220 | |
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1221 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1222 if (ReplayCompiles && |
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1223 (ReplaySuppressInitializers == 1 || |
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1224 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1225 // Hide the existence of the initializer for the purpose of replaying the compile |
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1226 return; |
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1227 } |
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1228 |
0 | 1229 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1230 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1231 if (TraceClassInitialization) { | |
1232 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1233 this_oop->name()->print_value(); | |
1234 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1235 } | |
1236 if (h_method() != NULL) { | |
1237 JavaCallArguments args; // No arguments | |
1238 JavaValue result(T_VOID); | |
1239 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1240 } | |
1241 } | |
1242 | |
1243 | |
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1244 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1245 InterpreterOopMap* entry_for) { |
1246 // Dirty read, then double-check under a lock. | |
1247 if (_oop_map_cache == NULL) { | |
1248 // Otherwise, allocate a new one. | |
1249 MutexLocker x(OopMapCacheAlloc_lock); | |
1250 // First time use. Allocate a cache in C heap | |
1251 if (_oop_map_cache == NULL) { | |
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1252 // Release stores from OopMapCache constructor before assignment |
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1253 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1254 // required memory barrier only because of the volatile |
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1255 // qualifier of _oop_map_cache. |
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1256 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1257 } |
1258 } | |
1259 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1260 _oop_map_cache->lookup(method, bci, entry_for); | |
1261 } | |
1262 | |
1263 | |
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1264 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1265 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1266 Symbol* f_name = fs.name(); |
1267 Symbol* f_sig = fs.signature(); | |
0 | 1268 if (f_name == name && f_sig == sig) { |
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1269 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1270 return true; |
1271 } | |
1272 } | |
1273 return false; | |
1274 } | |
1275 | |
1276 | |
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1277 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1278 const int n = local_interfaces()->length(); |
1279 for (int i = 0; i < n; i++) { | |
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1280 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1281 assert(intf1->is_interface(), "just checking type"); |
0 | 1282 // search for field in current interface |
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1283 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1284 assert(fd->is_static(), "interface field must be static"); |
1285 return intf1; | |
1286 } | |
1287 // search for field in direct superinterfaces | |
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1288 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1289 if (intf2 != NULL) return intf2; |
1290 } | |
1291 // otherwise field lookup fails | |
1292 return NULL; | |
1293 } | |
1294 | |
1295 | |
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1296 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1297 // search order according to newest JVM spec (5.4.3.2, p.167). |
1298 // 1) search for field in current klass | |
1299 if (find_local_field(name, sig, fd)) { | |
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1300 return const_cast<InstanceKlass*>(this); |
0 | 1301 } |
1302 // 2) search for field recursively in direct superinterfaces | |
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1303 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1304 if (intf != NULL) return intf; |
1305 } | |
1306 // 3) apply field lookup recursively if superclass exists | |
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1307 { Klass* supr = super(); |
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1308 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1309 } |
1310 // 4) otherwise field lookup fails | |
1311 return NULL; | |
1312 } | |
1313 | |
1314 | |
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1315 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1316 // search order according to newest JVM spec (5.4.3.2, p.167). |
1317 // 1) search for field in current klass | |
1318 if (find_local_field(name, sig, fd)) { | |
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1319 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1320 } |
1321 // 2) search for field recursively in direct superinterfaces | |
1322 if (is_static) { | |
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1323 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1324 if (intf != NULL) return intf; |
1325 } | |
1326 // 3) apply field lookup recursively if superclass exists | |
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1327 { Klass* supr = super(); |
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1328 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1329 } |
1330 // 4) otherwise field lookup fails | |
1331 return NULL; | |
1332 } | |
1333 | |
1334 | |
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1335 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1336 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1337 if (fs.offset() == offset) { |
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1338 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1339 if (fd->is_static() == is_static) return true; |
1340 } | |
1341 } | |
1342 return false; | |
1343 } | |
1344 | |
1345 | |
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1346 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1347 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1348 while (klass != NULL) { |
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1349 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1350 return true; |
1351 } | |
6983 | 1352 klass = klass->super(); |
0 | 1353 } |
1354 return false; | |
1355 } | |
1356 | |
1357 | |
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1358 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1359 int len = methods()->length(); |
1360 for (int index = 0; index < len; index++) { | |
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1361 Method* m = methods()->at(index); |
0 | 1362 assert(m->is_method(), "must be method"); |
1363 f(m); | |
1364 } | |
1365 } | |
1366 | |
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1367 |
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1368 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1369 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1370 if (fs.access_flags().is_static()) { | |
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1371 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1372 cl->do_field(&fd); |
1373 } | |
0 | 1374 } |
1375 } | |
1376 | |
1377 | |
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1378 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1379 instanceKlassHandle h_this(THREAD, this); |
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1380 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1381 } |
1382 | |
1383 | |
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1384 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1385 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1386 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1387 if (fs.access_flags().is_static()) { |
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1388 fieldDescriptor& fd = fs.field_descriptor(); |
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1389 f(&fd, mirror, CHECK); |
3938 | 1390 } |
0 | 1391 } |
1392 } | |
1393 | |
1394 | |
44
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1395 static int compare_fields_by_offset(int* a, int* b) { |
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1396 return a[0] - b[0]; |
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1397 } |
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1398 |
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1399 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1400 InstanceKlass* super = superklass(); |
0 | 1401 if (super != NULL) { |
1402 super->do_nonstatic_fields(cl); | |
1403 } | |
44
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1404 fieldDescriptor fd; |
3938 | 1405 int length = java_fields_count(); |
44
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1406 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1407 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1408 int j = 0; |
3938 | 1409 for (int i = 0; i < length; i += 1) { |
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1410 fd.reinitialize(this, i); |
44
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1411 if (!fd.is_static()) { |
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1412 fields_sorted[j + 0] = fd.offset(); |
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1413 fields_sorted[j + 1] = i; |
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1414 j += 2; |
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1415 } |
0 | 1416 } |
44
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1417 if (j > 0) { |
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1418 length = j; |
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1419 // _sort_Fn is defined in growableArray.hpp. |
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1420 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1421 for (int i = 0; i < length; i += 2) { |
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1422 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1423 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1424 cl->do_field(&fd); |
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1425 } |
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|
1426 } |
6197 | 1427 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1428 } |
1429 | |
1430 | |
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1431 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1432 if (array_klasses() != NULL) |
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1433 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1434 } |
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1435 |
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1436 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1437 if (array_klasses() != NULL) |
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1438 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1439 } |
1440 | |
1441 #ifdef ASSERT | |
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1442 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1443 int len = methods->length(); |
1444 for (int index = 0; index < len; index++) { | |
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1445 Method* m = methods->at(index); |
0 | 1446 assert(m->is_method(), "must be method"); |
1447 if (m->signature() == signature && m->name() == name) { | |
1448 return index; | |
1449 } | |
1450 } | |
1451 return -1; | |
1452 } | |
1453 #endif | |
1454 | |
6934 | 1455 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1456 int len = methods->length(); |
1457 // methods are sorted, so do binary search | |
1458 int l = 0; | |
1459 int h = len - 1; | |
1460 while (l <= h) { | |
1461 int mid = (l + h) >> 1; | |
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1462 Method* m = methods->at(mid); |
0 | 1463 assert(m->is_method(), "must be method"); |
1464 int res = m->name()->fast_compare(name); | |
1465 if (res == 0) { | |
6934 | 1466 return mid; |
0 | 1467 } else if (res < 0) { |
1468 l = mid + 1; | |
1469 } else { | |
1470 h = mid - 1; | |
1471 } | |
1472 } | |
6934 | 1473 return -1; |
1474 } | |
1475 | |
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1476 // find_method looks up the name/signature in the local methods array |
6934 | 1477 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1478 return find_method_impl(name, signature, false); |
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1479 } |
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1480 |
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1481 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
20785 | 1482 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass, false); |
6934 | 1483 } |
1484 | |
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1485 // find_instance_method looks up the name/signature in the local methods array |
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1486 // and skips over static methods |
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|
1487 Method* InstanceKlass::find_instance_method( |
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|
1488 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
20785 | 1489 Method* meth = InstanceKlass::find_method_impl(methods, name, signature, false, true); |
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1490 return meth; |
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|
1491 } |
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|
1492 |
20785 | 1493 // find_instance_method looks up the name/signature in the local methods array |
1494 // and skips over static methods | |
1495 Method* InstanceKlass::find_instance_method(Symbol* name, Symbol* signature) { | |
1496 return InstanceKlass::find_instance_method(methods(), name, signature); | |
1497 } | |
1498 | |
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1499 // find_method looks up the name/signature in the local methods array |
6934 | 1500 Method* InstanceKlass::find_method( |
1501 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
20785 | 1502 return InstanceKlass::find_method_impl(methods, name, signature, false, false); |
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1503 } |
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1504 |
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1505 Method* InstanceKlass::find_method_impl( |
20785 | 1506 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1507 int hit = find_method_index(methods, name, signature, skipping_overpass, skipping_static); | |
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1508 return hit >= 0 ? methods->at(hit): NULL; |
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|
1509 } |
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|
1510 |
20785 | 1511 bool InstanceKlass::method_matches(Method* m, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1512 return (m->signature() == signature) && | |
1513 (!skipping_overpass || !m->is_overpass()) && | |
1514 (!skipping_static || !m->is_static()); | |
1515 } | |
1516 | |
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1517 // Used directly for default_methods to find the index into the |
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1518 // default_vtable_indices, and indirectly by find_method |
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|
1519 // find_method_index looks in the local methods array to return the index |
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1520 // of the matching name/signature. If, overpass methods are being ignored, |
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1521 // the search continues to find a potential non-overpass match. This capability |
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|
1522 // is important during method resolution to prefer a static method, for example, |
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|
1523 // over an overpass method. |
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|
1524 int InstanceKlass::find_method_index( |
20785 | 1525 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
6934 | 1526 int hit = binary_search(methods, name); |
1527 if (hit != -1) { | |
1528 Method* m = methods->at(hit); | |
20785 | 1529 |
6934 | 1530 // Do linear search to find matching signature. First, quick check |
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|
1531 // for common case, ignoring overpasses if requested. |
20785 | 1532 if (method_matches(m, signature, skipping_overpass, skipping_static)) return hit; |
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1533 |
6934 | 1534 // search downwards through overloaded methods |
1535 int i; | |
1536 for (i = hit - 1; i >= 0; --i) { | |
1537 Method* m = methods->at(i); | |
1538 assert(m->is_method(), "must be method"); | |
1539 if (m->name() != name) break; | |
20785 | 1540 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1541 } |
1542 // search upwards | |
1543 for (i = hit + 1; i < methods->length(); ++i) { | |
1544 Method* m = methods->at(i); | |
1545 assert(m->is_method(), "must be method"); | |
1546 if (m->name() != name) break; | |
20785 | 1547 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1548 } |
1549 // not found | |
0 | 1550 #ifdef ASSERT |
20785 | 1551 int index = skipping_overpass || skipping_static ? -1 : linear_search(methods, name, signature); |
6934 | 1552 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1553 #endif |
6934 | 1554 } |
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1555 return -1; |
0 | 1556 } |
6934 | 1557 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1558 return find_method_by_name(methods(), name, end); | |
1559 } | |
1560 | |
1561 int InstanceKlass::find_method_by_name( | |
1562 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1563 assert(end_ptr != NULL, "just checking"); | |
1564 int start = binary_search(methods, name); | |
1565 int end = start + 1; | |
1566 if (start != -1) { | |
1567 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1568 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1569 *end_ptr = end; | |
1570 return start; | |
1571 } | |
1572 return -1; | |
1573 } | |
1574 | |
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|
1575 // uncached_lookup_method searches both the local class methods array and all |
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|
1576 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1577 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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|
1578 MethodLookupMode lookup_mode = mode; |
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1579 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1580 while (klass != NULL) { |
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|
1581 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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|
1582 if (method != NULL) { |
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1583 return method; |
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|
1584 } |
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1585 klass = InstanceKlass::cast(klass)->super(); |
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|
1586 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1587 } |
1588 return NULL; | |
1589 } | |
1590 | |
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|
1591 #ifdef ASSERT |
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1592 // search through class hierarchy and return true if this class or |
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|
1593 // one of the superclasses was redefined |
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|
1594 bool InstanceKlass::has_redefined_this_or_super() const { |
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|
1595 const InstanceKlass* klass = this; |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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|
1596 while (klass != NULL) { |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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|
1597 if (klass->has_been_redefined()) { |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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|
1598 return true; |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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|
1599 } |
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|
1600 klass = InstanceKlass::cast(klass->super()); |
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|
1601 } |
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|
1602 return false; |
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|
1603 } |
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|
1604 #endif |
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|
1605 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
1606 // lookup a method in the default methods list then in all transitive interfaces |
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8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
1607 // Do NOT return private or static methods |
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|
1608 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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|
1609 Symbol* signature) const { |
12828
d25557d03ec0
8026185: nsk/jvmit/GetMethodDeclaringClass/declcls001 failed
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12823
diff
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|
1610 Method* m = NULL; |
12823
ac9cb1d5a202
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diff
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|
1611 if (default_methods() != NULL) { |
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|
1612 m = find_method(default_methods(), name, signature); |
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diff
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|
1613 } |
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diff
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|
1614 // Look up interfaces |
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|
1615 if (m == NULL) { |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
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|
1616 m = lookup_method_in_all_interfaces(name, signature, normal); |
12823
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|
1617 } |
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diff
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|
1618 return m; |
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12811
diff
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|
1619 } |
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|
1620 |
0 | 1621 // 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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12316
diff
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|
1622 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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12316
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|
1623 // They should only be found in the initial InterfaceMethodRef |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1624 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
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|
1625 Symbol* signature, |
17889
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8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
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|
1626 MethodLookupMode mode) const { |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1627 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1628 int num_ifs = all_ifs->length(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1629 InstanceKlass *ik = NULL; |
0 | 1630 for (int i = 0; i < num_ifs; i++) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1631 ik = InstanceKlass::cast(all_ifs->at(i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1632 Method* m = ik->lookup_method(name, signature); |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
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13438
diff
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|
1633 if (m != NULL && m->is_public() && !m->is_static() && |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
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parents:
17883
diff
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|
1634 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1635 return m; |
1636 } | |
1637 } | |
1638 return NULL; | |
1639 } | |
1640 | |
1641 /* jni_id_for_impl for jfieldIds only */ | |
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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|
1642 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1643 MutexLocker ml(JfieldIdCreation_lock); |
1644 // Retry lookup after we got the lock | |
1645 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1646 if (probe == NULL) { | |
1647 // Slow case, allocate new static field identifier | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1648 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1649 this_oop->set_jni_ids(probe); |
1650 } | |
1651 return probe; | |
1652 } | |
1653 | |
1654 | |
1655 /* jni_id_for for jfieldIds only */ | |
6725
da91efe96a93
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|
1656 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1657 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1658 if (probe == NULL) { | |
6725
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coleenp
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diff
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|
1659 probe = jni_id_for_impl(this, offset); |
0 | 1660 } |
1661 return probe; | |
1662 } | |
1663 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1664 u2 InstanceKlass::enclosing_method_data(int offset) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1665 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4739
diff
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|
1666 if (inner_class_list == NULL) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4739
diff
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|
1667 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
1668 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1669 int length = inner_class_list->length(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1670 if (length % inner_class_next_offset == 0) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1671 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1672 } else { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1673 int index = length - enclosing_method_attribute_size; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1674 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1675 return inner_class_list->at(index + offset); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1676 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1677 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1678 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1679 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1680 u2 method_index) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1681 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1682 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1683 int length = inner_class_list->length(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1684 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1685 int index = length - enclosing_method_attribute_size; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1686 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1687 index + enclosing_method_class_index_offset, class_index); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1688 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1689 index + enclosing_method_method_index_offset, method_index); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1690 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1691 } |
0 | 1692 |
1693 // Lookup or create a jmethodID. | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1694 // This code is called by the VMThread and JavaThreads so the |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1695 // locking has to be done very carefully to avoid deadlocks |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1696 // and/or other cache consistency problems. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1697 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1698 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1699 size_t idnum = (size_t)method_h->method_idnum(); |
1700 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1701 size_t length = 0; | |
1702 jmethodID id = NULL; | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
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|
1703 |
74a5db69c1fe
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|
1704 // We use a double-check locking idiom here because this cache is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1705 // performance sensitive. In the normal system, this cache only |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1706 // transitions from NULL to non-NULL which is safe because we use |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
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|
1707 // release_set_methods_jmethod_ids() to advertise the new cache. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
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|
1708 // A partially constructed cache should never be seen by a racing |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
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|
1709 // thread. We also use release_store_ptr() to save a new jmethodID |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
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|
1710 // in the cache so a partially constructed jmethodID should never be |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
changeset
|
1711 // seen either. Cache reads of existing jmethodIDs proceed without a |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1712 // lock, but cache writes of a new jmethodID requires uniqueness and |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1713 // creation of the cache itself requires no leaks so a lock is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
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|
1714 // generally acquired in those two cases. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
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|
1715 // |
74a5db69c1fe
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diff
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|
1716 // If the RedefineClasses() API has been used, then this cache can |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
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|
1717 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1718 // Cache creation requires no leaks and we require safety between all |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1719 // cache accesses and freeing of the old cache so a lock is generally |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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diff
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|
1720 // acquired when the RedefineClasses() API has been used. |
0 | 1721 |
977
74a5db69c1fe
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974
diff
changeset
|
1722 if (jmeths != NULL) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1723 // the cache already exists |
74a5db69c1fe
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diff
changeset
|
1724 if (!ik_h->idnum_can_increment()) { |
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diff
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|
1725 // the cache can't grow so we can just get the current values |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
changeset
|
1726 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1727 } else { |
74a5db69c1fe
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974
diff
changeset
|
1728 // cache can grow so we have to be more careful |
74a5db69c1fe
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diff
changeset
|
1729 if (Threads::number_of_threads() == 0 || |
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974
diff
changeset
|
1730 SafepointSynchronize::is_at_safepoint()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
changeset
|
1731 // we're single threaded or at a safepoint - no locking needed |
74a5db69c1fe
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974
diff
changeset
|
1732 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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diff
changeset
|
1733 } else { |
74a5db69c1fe
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974
diff
changeset
|
1734 MutexLocker ml(JmethodIdCreation_lock); |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1735 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
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diff
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|
1736 } |
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1737 } |
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1738 } |
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1739 // implied else: |
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1740 // we need to allocate a cache so default length and id values are good |
0 | 1741 |
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1742 if (jmeths == NULL || // no cache yet |
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1743 length <= idnum || // cache is too short |
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1744 id == NULL) { // cache doesn't contain entry |
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1745 |
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1746 // This function can be called by the VMThread so we have to do all |
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1747 // things that might block on a safepoint before grabbing the lock. |
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1748 // Otherwise, we can deadlock with the VMThread or have a cache |
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1749 // consistency issue. These vars keep track of what we might have |
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1750 // to free after the lock is dropped. |
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1751 jmethodID to_dealloc_id = NULL; |
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1752 jmethodID* to_dealloc_jmeths = NULL; |
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1753 |
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1754 // may not allocate new_jmeths or use it if we allocate it |
0 | 1755 jmethodID* new_jmeths = NULL; |
1756 if (length <= idnum) { | |
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1757 // allocate a new cache that might be used |
0 | 1758 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1759 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1760 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1761 // cache size is stored in element[0], other elements offset by one |
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1762 new_jmeths[0] = (jmethodID)size; |
0 | 1763 } |
1764 | |
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1765 // allocate a new jmethodID that might be used |
0 | 1766 jmethodID new_id = NULL; |
1767 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1768 // The method passed in is old (but not obsolete), we need to use the current version | |
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1769 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1770 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1771 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1772 } else { |
1773 // It is the current version of the method or an obsolete method, | |
1774 // use the version passed in | |
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1775 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1776 } |
1777 | |
977
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1778 if (Threads::number_of_threads() == 0 || |
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1779 SafepointSynchronize::is_at_safepoint()) { |
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1780 // we're single threaded or at a safepoint - no locking needed |
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1781 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1782 &to_dealloc_id, &to_dealloc_jmeths); |
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1783 } else { |
0 | 1784 MutexLocker ml(JmethodIdCreation_lock); |
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1785 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1786 &to_dealloc_id, &to_dealloc_jmeths); |
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1787 } |
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1788 |
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1789 // The lock has been dropped so we can free resources. |
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1790 // Free up either the old cache or the new cache if we allocated one. |
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1791 if (to_dealloc_jmeths != NULL) { |
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1792 FreeHeap(to_dealloc_jmeths); |
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1793 } |
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1794 // free up the new ID since it wasn't needed |
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1795 if (to_dealloc_id != NULL) { |
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1796 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1797 } |
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1798 } |
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1799 return id; |
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1800 } |
0 | 1801 |
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1802 |
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1803 // Common code to fetch the jmethodID from the cache or update the |
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1804 // cache with the new jmethodID. This function should never do anything |
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1805 // that causes the caller to go to a safepoint or we can deadlock with |
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1806 // the VMThread or have cache consistency issues. |
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1807 // |
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1808 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1809 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1810 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1811 jmethodID** to_dealloc_jmeths_p) { |
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1812 assert(new_id != NULL, "sanity check"); |
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1813 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1814 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1815 assert(Threads::number_of_threads() == 0 || |
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1816 SafepointSynchronize::is_at_safepoint() || |
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1817 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1818 |
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1819 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1820 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1821 jmethodID id = NULL; |
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1822 size_t length = 0; |
0 | 1823 |
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1824 if (jmeths == NULL || // no cache yet |
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1825 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1826 if (jmeths != NULL) { |
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1827 // copy any existing entries from the old cache |
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1828 for (size_t index = 0; index < length; index++) { |
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1829 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1830 } |
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1831 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1832 } |
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1833 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1834 } else { |
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1835 // fetch jmethodID (if any) from the existing cache |
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1836 id = jmeths[idnum+1]; |
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1837 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1838 } |
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1839 if (id == NULL) { |
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1840 // No matching jmethodID in the existing cache or we have a new |
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1841 // cache or we just grew the cache. This cache write is done here |
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1842 // by the first thread to win the foot race because a jmethodID |
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1843 // needs to be unique once it is generally available. |
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1844 id = new_id; |
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1845 |
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1846 // The jmethodID cache can be read while unlocked so we have to |
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1847 // make sure the new jmethodID is complete before installing it |
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1848 // in the cache. |
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1849 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1850 } else { |
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1851 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1852 } |
1853 return id; | |
1854 } | |
1855 | |
1856 | |
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1857 // Common code to get the jmethodID cache length and the jmethodID |
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1858 // value at index idnum if there is one. |
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1859 // |
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1860 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1861 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1862 assert(cache != NULL, "sanity check"); |
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1863 assert(length_p != NULL, "sanity check"); |
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1864 assert(id_p != NULL, "sanity check"); |
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1865 |
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1866 // cache size is stored in element[0], other elements offset by one |
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1867 *length_p = (size_t)cache[0]; |
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1868 if (*length_p <= idnum) { // cache is too short |
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1869 *id_p = NULL; |
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1870 } else { |
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1871 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1872 } |
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1873 } |
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1874 |
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1875 |
0 | 1876 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1877 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1878 size_t idnum = (size_t)method->method_idnum(); |
1879 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1880 size_t length; // length assigned as debugging crumb | |
1881 jmethodID id = NULL; | |
977
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1882 if (jmeths != NULL && // If there is a cache |
0 | 1883 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1884 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1885 } | |
1886 return id; | |
1887 } | |
1888 | |
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1889 int nmethodBucket::decrement() { |
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1890 return Atomic::add(-1, (volatile int *)&_count); |
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1891 } |
0 | 1892 |
1893 // | |
1894 // Walk the list of dependent nmethods searching for nmethods which | |
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1895 // are dependent on the changes that were passed in and mark them for |
0 | 1896 // deoptimization. Returns the number of nmethods found. |
1897 // | |
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1898 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1899 assert_locked_or_safepoint(CodeCache_lock); |
1900 int found = 0; | |
1901 nmethodBucket* b = _dependencies; | |
1902 while (b != NULL) { | |
1903 nmethod* nm = b->get_nmethod(); | |
1904 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1905 // the dependency list may contain nmethods which aren't alive. | |
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1906 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1907 if (TraceDependencies) { |
1908 ResourceMark rm; | |
1909 tty->print_cr("Marked for deoptimization"); | |
1910 tty->print_cr(" context = %s", this->external_name()); | |
1911 changes.print(); | |
1912 nm->print(); | |
1913 nm->print_dependencies(); | |
1914 } | |
1915 nm->mark_for_deoptimization(); | |
1916 found++; | |
1917 } | |
1918 b = b->next(); | |
1919 } | |
1920 return found; | |
1921 } | |
1922 | |
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1923 void InstanceKlass::clean_dependent_nmethods() { |
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1924 assert_locked_or_safepoint(CodeCache_lock); |
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1925 |
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1926 if (has_unloaded_dependent()) { |
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1927 nmethodBucket* b = _dependencies; |
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1928 nmethodBucket* last = NULL; |
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1929 while (b != NULL) { |
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1930 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1931 |
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1932 nmethodBucket* next = b->next(); |
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1933 |
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1934 if (b->count() == 0) { |
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1935 if (last == NULL) { |
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1936 _dependencies = next; |
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1937 } else { |
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1938 last->set_next(next); |
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1939 } |
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1940 delete b; |
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1941 // last stays the same. |
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1942 } else { |
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1943 last = b; |
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1944 } |
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1945 |
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1946 b = next; |
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1947 } |
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1948 set_has_unloaded_dependent(false); |
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1949 } |
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1950 #ifdef ASSERT |
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1951 else { |
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1952 // Verification |
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1953 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1954 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1955 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1956 } |
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1957 } |
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1958 #endif |
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1959 } |
0 | 1960 |
1961 // | |
1962 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1963 // It's possible that an nmethod has multiple dependencies on this klass | |
1964 // so a count is kept for each bucket to guarantee that creation and | |
1965 // deletion of dependencies is consistent. | |
1966 // | |
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1967 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1968 assert_locked_or_safepoint(CodeCache_lock); |
1969 nmethodBucket* b = _dependencies; | |
1970 nmethodBucket* last = NULL; | |
1971 while (b != NULL) { | |
1972 if (nm == b->get_nmethod()) { | |
1973 b->increment(); | |
1974 return; | |
1975 } | |
1976 b = b->next(); | |
1977 } | |
1978 _dependencies = new nmethodBucket(nm, _dependencies); | |
1979 } | |
1980 | |
1981 | |
1982 // | |
1983 // Decrement count of the nmethod in the dependency list and remove | |
1984 // the bucket competely when the count goes to 0. This method must | |
1985 // find a corresponding bucket otherwise there's a bug in the | |
1986 // recording of dependecies. | |
1987 // | |
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1988 void InstanceKlass::remove_dependent_nmethod(nmethod* nm, bool delete_immediately) { |
0 | 1989 assert_locked_or_safepoint(CodeCache_lock); |
1990 nmethodBucket* b = _dependencies; | |
1991 nmethodBucket* last = NULL; | |
1992 while (b != NULL) { | |
1993 if (nm == b->get_nmethod()) { | |
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1994 int val = b->decrement(); |
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1995 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1996 if (val == 0) { |
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1997 if (delete_immediately) { |
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1998 if (last == NULL) { |
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1999 _dependencies = b->next(); |
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2000 } else { |
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2001 last->set_next(b->next()); |
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2002 } |
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2003 delete b; |
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2004 } else { |
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2005 // The deletion of this entry is deferred until a later, potentially parallel GC phase. |
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2006 set_has_unloaded_dependent(true); |
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2007 } |
0 | 2008 } |
2009 return; | |
2010 } | |
2011 last = b; | |
2012 b = b->next(); | |
2013 } | |
2014 #ifdef ASSERT | |
2015 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
2016 nm->print(); | |
2017 #endif // ASSERT | |
2018 ShouldNotReachHere(); | |
2019 } | |
2020 | |
2021 | |
2022 #ifndef PRODUCT | |
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2023 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 2024 nmethodBucket* b = _dependencies; |
2025 int idx = 0; | |
2026 while (b != NULL) { | |
2027 nmethod* nm = b->get_nmethod(); | |
2028 tty->print("[%d] count=%d { ", idx++, b->count()); | |
2029 if (!verbose) { | |
2030 nm->print_on(tty, "nmethod"); | |
2031 tty->print_cr(" } "); | |
2032 } else { | |
2033 nm->print(); | |
2034 nm->print_dependencies(); | |
2035 tty->print_cr("--- } "); | |
2036 } | |
2037 b = b->next(); | |
2038 } | |
2039 } | |
2040 | |
2041 | |
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2042 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 2043 nmethodBucket* b = _dependencies; |
2044 while (b != NULL) { | |
2045 if (nm == b->get_nmethod()) { | |
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2046 #ifdef ASSERT |
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2047 int count = b->count(); |
20279 | 2048 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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2049 #endif |
0 | 2050 return true; |
2051 } | |
2052 b = b->next(); | |
2053 } | |
2054 return false; | |
2055 } | |
2056 #endif //PRODUCT | |
2057 | |
2058 | |
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2059 // Garbage collection |
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2060 |
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2061 #ifdef ASSERT |
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2062 template <class T> void assert_is_in(T *p) { |
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2063 T heap_oop = oopDesc::load_heap_oop(p); |
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2064 if (!oopDesc::is_null(heap_oop)) { |
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2065 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2066 assert(Universe::heap()->is_in(o), "should be in heap"); |
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2067 } |
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2068 } |
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2069 template <class T> void assert_is_in_closed_subset(T *p) { |
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2070 T heap_oop = oopDesc::load_heap_oop(p); |
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2071 if (!oopDesc::is_null(heap_oop)) { |
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2072 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2073 assert(Universe::heap()->is_in_closed_subset(o), |
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2074 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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2075 } |
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2076 } |
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2077 template <class T> void assert_is_in_reserved(T *p) { |
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2078 T heap_oop = oopDesc::load_heap_oop(p); |
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2079 if (!oopDesc::is_null(heap_oop)) { |
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2080 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2081 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2082 } |
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2083 } |
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2084 template <class T> void assert_nothing(T *p) {} |
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2085 |
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2086 #else |
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2087 template <class T> void assert_is_in(T *p) {} |
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2088 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2089 template <class T> void assert_is_in_reserved(T *p) {} |
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2090 template <class T> void assert_nothing(T *p) {} |
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2091 #endif // ASSERT |
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2092 |
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2093 // |
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2094 // Macros that iterate over areas of oops which are specialized on type of |
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2095 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2096 // |
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2097 // Parameters are: |
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2098 // T - type of oop to point to (either oop or narrowOop) |
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2099 // start_p - starting pointer for region to iterate over |
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2100 // count - number of oops or narrowOops to iterate over |
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2101 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2102 // makes it more efficient to put in a macro rather than making |
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2103 // it a template function) |
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2104 // assert_fn - assert function which is template function because performance |
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2105 // doesn't matter when enabled. |
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2106 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2107 T, start_p, count, do_oop, \ |
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2108 assert_fn) \ |
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2109 { \ |
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2110 T* p = (T*)(start_p); \ |
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2111 T* const end = p + (count); \ |
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2112 while (p < end) { \ |
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2113 (assert_fn)(p); \ |
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2114 do_oop; \ |
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2115 ++p; \ |
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2116 } \ |
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2117 } |
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2118 |
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2119 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2120 T, start_p, count, do_oop, \ |
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2121 assert_fn) \ |
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2122 { \ |
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2123 T* const start = (T*)(start_p); \ |
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2124 T* p = start + (count); \ |
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2125 while (start < p) { \ |
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2126 --p; \ |
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2127 (assert_fn)(p); \ |
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2128 do_oop; \ |
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2129 } \ |
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2130 } |
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2131 |
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2132 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2133 T, start_p, count, low, high, \ |
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2134 do_oop, assert_fn) \ |
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2135 { \ |
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2136 T* const l = (T*)(low); \ |
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2137 T* const h = (T*)(high); \ |
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2138 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2139 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2140 "bounded region must be properly aligned"); \ |
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2141 T* p = (T*)(start_p); \ |
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2142 T* end = p + (count); \ |
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2143 if (p < l) p = l; \ |
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2144 if (end > h) end = h; \ |
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2145 while (p < end) { \ |
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2146 (assert_fn)(p); \ |
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2147 do_oop; \ |
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2148 ++p; \ |
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2149 } \ |
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2150 } |
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2151 |
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2152 |
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2153 // The following macros call specialized macros, passing either oop or |
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2154 // narrowOop as the specialization type. These test the UseCompressedOops |
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2155 // flag. |
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2156 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2157 { \ |
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2158 /* Compute oopmap block range. The common case \ |
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2159 is nonstatic_oop_map_size == 1. */ \ |
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2160 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2161 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2162 if (UseCompressedOops) { \ |
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2163 while (map < end_map) { \ |
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2164 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2165 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2166 do_oop, assert_fn) \ |
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2167 ++map; \ |
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2168 } \ |
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2169 } else { \ |
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2170 while (map < end_map) { \ |
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2171 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2172 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2173 do_oop, assert_fn) \ |
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2174 ++map; \ |
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2175 } \ |
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2176 } \ |
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2177 } |
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2178 |
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2179 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2180 { \ |
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2181 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2182 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2183 if (UseCompressedOops) { \ |
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2184 while (start_map < map) { \ |
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2185 --map; \ |
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2186 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2187 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2188 do_oop, assert_fn) \ |
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2189 } \ |
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2190 } else { \ |
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2191 while (start_map < map) { \ |
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2192 --map; \ |
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2193 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2194 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2195 do_oop, assert_fn) \ |
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2196 } \ |
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2197 } \ |
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2198 } |
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2199 |
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2200 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2201 assert_fn) \ |
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2202 { \ |
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2203 /* Compute oopmap block range. The common case is \ |
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2204 nonstatic_oop_map_size == 1, so we accept the \ |
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2205 usually non-existent extra overhead of examining \ |
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2206 all the maps. */ \ |
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2207 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2208 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2209 if (UseCompressedOops) { \ |
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2210 while (map < end_map) { \ |
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2211 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2212 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2213 low, high, \ |
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2214 do_oop, assert_fn) \ |
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2215 ++map; \ |
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2216 } \ |
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2217 } else { \ |
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2218 while (map < end_map) { \ |
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2219 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2220 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2221 low, high, \ |
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2222 do_oop, assert_fn) \ |
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2223 ++map; \ |
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2224 } \ |
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2225 } \ |
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2226 } |
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2227 |
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2228 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2229 assert(obj != NULL, "can't follow the content of NULL object"); |
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2230 MarkSweep::follow_klass(obj->klass()); |
113
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2231 InstanceKlass_OOP_MAP_ITERATE( \ |
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2232 obj, \ |
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2233 MarkSweep::mark_and_push(p), \ |
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2234 assert_is_in_closed_subset) |
0 | 2235 } |
2236 | |
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2237 #if INCLUDE_ALL_GCS |
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2238 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2239 oop obj) { |
113
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2240 assert(obj != NULL, "can't follow the content of NULL object"); |
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2241 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2242 // Only mark the header and let the scan of the meta-data mark |
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2243 // everything else. |
113
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2244 InstanceKlass_OOP_MAP_ITERATE( \ |
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2245 obj, \ |
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2246 PSParallelCompact::mark_and_push(cm, p), \ |
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2247 assert_is_in) |
0 | 2248 } |
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2249 #endif // INCLUDE_ALL_GCS |
0 | 2250 |
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2251 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2252 // applied to the klass ptr in the object header. |
2253 | |
342
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2254 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2255 \ |
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2256 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2257 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2258 /* header */ \ |
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2259 if_do_metadata_checked(closure, nv_suffix) { \ |
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2260 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2261 } \ |
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2262 InstanceKlass_OOP_MAP_ITERATE( \ |
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2263 obj, \ |
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2264 SpecializationStats:: \ |
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2265 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2266 (closure)->do_oop##nv_suffix(p), \ |
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2267 assert_is_in_closed_subset) \ |
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2268 return size_helper(); \ |
0 | 2269 } |
2270 | |
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2271 #if INCLUDE_ALL_GCS |
342
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2272 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2273 \ |
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2274 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2275 OopClosureType* closure) { \ |
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2276 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2277 \ |
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2278 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2279 \ |
342
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2280 /* instance variables */ \ |
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2281 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2282 obj, \ |
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2283 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2284 (closure)->do_oop##nv_suffix(p), \ |
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2285 assert_is_in_closed_subset) \ |
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2286 return size_helper(); \ |
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2287 } |
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2288 #endif // INCLUDE_ALL_GCS |
342
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2289 |
113
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2290 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2291 \ |
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2292 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2293 OopClosureType* closure, \ |
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2294 MemRegion mr) { \ |
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2295 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2296 if_do_metadata_checked(closure, nv_suffix) { \ |
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2297 if (mr.contains(obj)) { \ |
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2298 closure->do_klass##nv_suffix(obj->klass()); \ |
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2299 } \ |
113
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2300 } \ |
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2301 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2302 obj, mr.start(), mr.end(), \ |
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2303 (closure)->do_oop##nv_suffix(p), \ |
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2304 assert_is_in_closed_subset) \ |
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2305 return size_helper(); \ |
0 | 2306 } |
2307 | |
2308 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2309 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2310 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2311 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2312 #if INCLUDE_ALL_GCS |
342
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2313 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2314 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2315 #endif // INCLUDE_ALL_GCS |
0 | 2316 |
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2317 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2318 int size = size_helper(); |
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2319 InstanceKlass_OOP_MAP_ITERATE( \ |
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2320 obj, \ |
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2321 MarkSweep::adjust_pointer(p), \ |
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2322 assert_is_in) |
0 | 2323 return size; |
2324 } | |
2325 | |
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2326 #if INCLUDE_ALL_GCS |
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2327 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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2328 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2329 obj, \ |
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2330 if (PSScavenge::should_scavenge(p)) { \ |
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2331 pm->claim_or_forward_depth(p); \ |
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2332 }, \ |
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2333 assert_nothing ) |
0 | 2334 } |
2335 | |
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2336 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2337 int size = size_helper(); |
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2338 InstanceKlass_OOP_MAP_ITERATE( \ |
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2339 obj, \ |
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2340 PSParallelCompact::adjust_pointer(p), \ |
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2341 assert_is_in) |
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2342 return size; |
0 | 2343 } |
2344 | |
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|
2345 #endif // INCLUDE_ALL_GCS |
0 | 2346 |
23463
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2347 void InstanceKlass::clean_weak_instanceklass_links(BoolObjectClosure* is_alive) { |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2348 clean_implementors_list(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2349 clean_method_data(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2350 |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2351 clean_dependent_nmethods(); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2352 } |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2353 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2354 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20268
diff
changeset
|
2355 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2356 if (is_interface()) { |
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2357 if (ClassUnloading) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 Klass* impl = implementor(); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2359 if (impl != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2360 if (!impl->is_loader_alive(is_alive)) { |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2361 // remove this guy |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2362 Klass** klass = adr_implementor(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2363 assert(klass != NULL, "null klass"); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2364 if (klass != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2365 *klass = NULL; |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2366 } |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2367 } |
0 | 2368 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2369 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2370 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2371 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2372 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2373 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2374 for (int m = 0; m < methods()->length(); m++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2375 MethodData* mdo = methods()->at(m)->method_data(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 if (mdo != NULL) { |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
17674
diff
changeset
|
2377 mdo->clean_method_data(is_alive); |
0 | 2378 } |
2379 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2380 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2381 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2382 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2383 static void remove_unshareable_in_class(Klass* k) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2384 // remove klass's unshareable info |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2385 k->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2386 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2387 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2388 void InstanceKlass::remove_unshareable_info() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2389 Klass::remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2390 // Unlink the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2391 if (is_linked()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2392 unlink_class(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2393 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2394 init_implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2395 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2396 constants()->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2397 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2398 for (int i = 0; i < methods()->length(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2399 Method* m = methods()->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2400 m->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2401 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2402 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2403 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2404 array_klasses_do(remove_unshareable_in_class); |
0 | 2405 } |
2406 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2407 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2408 // Array classes have null protection domain. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2409 // --> see ArrayKlass::complete_create_array_klass() |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2410 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2411 } |
2412 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2413 void InstanceKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2414 Klass::restore_unshareable_info(loader_data, protection_domain, CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2415 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2416 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2417 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2418 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2419 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2420 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2421 m->restore_unshareable_info(CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2422 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2423 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2424 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2425 // entries in this vtable for super classes so the CDS vtable might |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2426 // point to old or obsolete entries. RedefineClasses doesn't fix up |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2427 // vtables in the shared system dictionary, only the main one. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2428 // It also redefines the itable too so fix that too. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2429 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2430 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2431 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2432 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2433 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2434 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2435 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2436 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2437 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2438 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2439 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2440 // returns true IFF is_in_error_state() has been changed as a result of this call. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2441 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2442 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2443 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2444 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2445 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2446 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2447 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2448 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2449 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2450 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2451 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2452 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2453 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2454 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2455 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2456 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2457 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2458 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2459 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2460 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2461 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2462 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2463 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2464 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2465 set_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2466 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2467 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2468 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2469 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2470 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2471 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2472 static void clear_all_breakpoints(Method* m) { |
0 | 2473 m->clear_all_breakpoints(); |
2474 } | |
2475 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2476 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2477 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2478 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2479 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2480 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2481 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2482 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2483 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2484 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2485 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2486 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2487 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2488 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2489 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2490 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2491 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2492 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2493 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2494 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2495 // 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.
coleenp
parents:
10133
diff
changeset
|
2496 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2497 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2498 |
0 | 2499 // Deallocate oop map cache |
2500 if (_oop_map_cache != NULL) { | |
2501 delete _oop_map_cache; | |
2502 _oop_map_cache = NULL; | |
2503 } | |
2504 | |
2505 // Deallocate JNI identifiers for jfieldIDs | |
2506 JNIid::deallocate(jni_ids()); | |
2507 set_jni_ids(NULL); | |
2508 | |
2509 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2510 if (jmeths != (jmethodID*)NULL) { | |
2511 release_set_methods_jmethod_ids(NULL); | |
2512 FreeHeap(jmeths); | |
2513 } | |
2514 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2515 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2516 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2517 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
|
2518 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
|
2519 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2520 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2521 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2522 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2523 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2524 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2525 |
0 | 2526 // release dependencies |
2527 nmethodBucket* b = _dependencies; | |
2528 _dependencies = NULL; | |
2529 while (b != NULL) { | |
2530 nmethodBucket* next = b->next(); | |
2531 delete b; | |
2532 b = next; | |
2533 } | |
2534 | |
2535 // Deallocate breakpoint records | |
2536 if (breakpoints() != 0x0) { | |
2537 methods_do(clear_all_breakpoints); | |
2538 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2539 } | |
2540 | |
2541 // deallocate information about previous versions | |
2542 if (_previous_versions != NULL) { | |
2543 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2544 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2545 delete pv_node; | |
2546 } | |
2547 delete _previous_versions; | |
2548 _previous_versions = NULL; | |
2549 } | |
2550 | |
2551 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2552 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2553 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2554 _cached_class_file = NULL; |
0 | 2555 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2556 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2557 // 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
|
2558 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2559 // 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
|
2560 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2561 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
|
2562 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
|
2563 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2564 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2565 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2566 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2567 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2568 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
|
2569 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2570 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2571 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2572 // 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
|
2573 // 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
|
2574 // 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
|
2575 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2576 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2577 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
|
2578 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2579 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2580 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2581 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2582 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2583 } |
0 | 2584 } |
2585 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2586 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2587 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
|
2588 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2589 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2590 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2591 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2592 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2593 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2594 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2595 // 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
|
2596 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2597 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2598 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
|
2599 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2600 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2601 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2602 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2603 // Get the internal name as a c string |
0 | 2604 const char* src = (const char*) (name()->as_C_string()); |
2605 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2606 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2607 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
|
2608 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2609 // Add L as type indicator |
0 | 2610 int dest_index = 0; |
2611 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2612 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2613 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2614 for (int src_index = 0; src_index < src_length; ) { |
0 | 2615 dest[dest_index++] = src[src_index++]; |
2616 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2617 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2618 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2619 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2620 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2621 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2622 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2623 // Add the semicolon and the NULL |
0 | 2624 dest[dest_index++] = ';'; |
2625 dest[dest_index] = '\0'; | |
2626 return dest; | |
2627 } | |
2628 | |
2629 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2630 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2631 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2632 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2633 Symbol* classname1 = class1->name(); |
2634 | |
2635 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2636 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2637 } |
2638 oop classloader2; | |
6983 | 2639 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2640 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2641 } else { |
6983 | 2642 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2643 classloader2 = NULL; |
2644 } | |
6983 | 2645 Symbol* classname2 = class2->name(); |
0 | 2646 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2647 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2648 classloader2, classname2); |
2649 } | |
2650 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2651 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
|
2652 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2653 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2654 Symbol* classname1 = class1->name(); |
0 | 2655 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2656 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2657 classloader2, classname2); |
2658 } | |
2659 | |
2660 // return true if two classes are in the same package, classloader | |
2661 // 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
|
2662 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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2663 oop class_loader2, Symbol* class_name2) { |
0 | 2664 if (class_loader1 != class_loader2) { |
2665 return false; | |
665
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2666 } else if (class_name1 == class_name2) { |
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2667 return true; // skip painful bytewise comparison |
0 | 2668 } else { |
2669 ResourceMark rm; | |
2670 | |
2177
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|
2671 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2672 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2673 // Otherwise, we just compare jbyte values between the strings. | |
2177
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2674 const jbyte *name1 = class_name1->base(); |
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|
2675 const jbyte *name2 = class_name2->base(); |
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|
2676 |
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|
2677 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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|
2678 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2679 |
2680 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2681 // One of the two doesn't have a package. Only return true | |
2682 // if the other one also doesn't have a package. | |
2683 return last_slash1 == last_slash2; | |
2684 } else { | |
2685 // Skip over '['s | |
2686 if (*name1 == '[') { | |
2687 do { | |
2688 name1++; | |
2689 } while (*name1 == '['); | |
2690 if (*name1 != 'L') { | |
2691 // Something is terribly wrong. Shouldn't be here. | |
2692 return false; | |
2693 } | |
2694 } | |
2695 if (*name2 == '[') { | |
2696 do { | |
2697 name2++; | |
2698 } while (*name2 == '['); | |
2699 if (*name2 != 'L') { | |
2700 // Something is terribly wrong. Shouldn't be here. | |
2701 return false; | |
2702 } | |
2703 } | |
2704 | |
2705 // Check that package part is identical | |
2706 int length1 = last_slash1 - name1; | |
2707 int length2 = last_slash2 - name2; | |
2708 | |
2709 return UTF8::equal(name1, length1, name2, length2); | |
2710 } | |
2711 } | |
2712 } | |
2713 | |
652
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|
2714 // Returns true iff super_method can be overridden by a method in targetclassname |
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2715 // See JSL 3rd edition 8.4.6.1 |
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2716 // Assumes name-signature match |
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2717 // "this" is InstanceKlass of super_method which must exist |
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2718 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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2719 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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2720 // Private methods can not be overridden |
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2721 if (super_method->is_private()) { |
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2722 return false; |
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|
2723 } |
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|
2724 // If super method is accessible, then override |
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|
2725 if ((super_method->is_protected()) || |
4aaa9f5e02a8
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|
2726 (super_method->is_public())) { |
4aaa9f5e02a8
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|
2727 return true; |
4aaa9f5e02a8
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acorn
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diff
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|
2728 } |
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diff
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|
2729 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
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|
2730 assert(super_method->is_package_private(), "must be package private"); |
2177
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|
2731 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
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|
2732 } |
0 | 2733 |
665
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|
2734 /* defined for now in jvm.cpp, for historical reasons *-- |
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2735 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
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diff
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|
2736 Symbol*& simple_name_result, TRAPS) { |
665
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diff
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|
2737 ... |
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|
2738 } |
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diff
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|
2739 */ |
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|
2740 |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2741 // tell if two classes have the same enclosing class (at package level) |
6725
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2742 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
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2743 Klass* class2_oop, TRAPS) { |
da91efe96a93
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2744 if (class2_oop == class1()) return true; |
6983 | 2745 if (!class2_oop->oop_is_instance()) return false; |
665
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|
2746 instanceKlassHandle class2(THREAD, class2_oop); |
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|
2747 |
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diff
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|
2748 // must be in same package before we try anything else |
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|
2749 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
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|
2750 return false; |
c89f86385056
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|
2751 |
c89f86385056
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|
2752 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
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jrose
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diff
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|
2753 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2754 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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|
2755 for (;;) { |
c89f86385056
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diff
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|
2756 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2757 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
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jrose
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diff
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|
2758 // 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
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|
2759 bool ignore_inner_is_member; |
6725
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2760 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
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1039
diff
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|
2761 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2762 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2763 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2764 outer1 = instanceKlassHandle(THREAD, next); |
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6814659: separable cleanups and subroutines for 6655638
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|
2765 } |
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|
2766 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2767 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2768 instanceKlassHandle outer2 = class2; |
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|
2769 for (;;) { |
1126
933a3e806ce6
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xlu
parents:
1039
diff
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|
2770 bool ignore_inner_is_member; |
6725
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|
2771 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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1039
diff
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|
2772 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2773 if (next == NULL) break; |
c89f86385056
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jrose
parents:
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diff
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|
2774 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2775 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2776 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2777 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2778 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2779 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2780 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2781 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2782 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2783 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2784 |
0 | 2785 |
6725
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|
2786 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2787 jint access = access_flags().as_int(); |
2788 | |
2789 // But check if it happens to be member class. | |
6725
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|
2790 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2791 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2792 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2793 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
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|
2794 // 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
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|
2795 // 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
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|
2796 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
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|
2797 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2798 // 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
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|
2799 // 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
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4739
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|
2800 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
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|
2801 if ((ik->name() == inner_name)) { |
f7c4174b33ba
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4739
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|
2802 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2803 access = iter.inner_access_flags(); |
f7c4174b33ba
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|
2804 break; |
0 | 2805 } |
2806 } | |
2807 // Remember to strip ACC_SUPER bit | |
2808 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2809 } | |
2810 | |
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2811 jint InstanceKlass::jvmti_class_status() const { |
0 | 2812 jint result = 0; |
2813 | |
2814 if (is_linked()) { | |
2815 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2816 } | |
2817 | |
2818 if (is_initialized()) { | |
2819 assert(is_linked(), "Class status is not consistent"); | |
2820 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2821 } | |
2822 if (is_in_error_state()) { | |
2823 result |= JVMTI_CLASS_STATUS_ERROR; | |
2824 } | |
2825 return result; | |
2826 } | |
2827 | |
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|
2828 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2829 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2830 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2831 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2832 / itableOffsetEntry::size(); | |
2833 | |
2834 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2835 // If the interface isn't implemented by the receiver class, |
0 | 2836 // the VM should throw IncompatibleClassChangeError. |
2837 if (cnt >= nof_interfaces) { | |
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|
2838 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2839 } |
2840 | |
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|
2841 Klass* ik = ioe->interface_klass(); |
0 | 2842 if (ik == holder) break; |
2843 } | |
2844 | |
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|
2845 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
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|
2846 Method* m = ime[index].method(); |
0 | 2847 if (m == NULL) { |
6725
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changeset
|
2848 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2849 } |
2850 return m; | |
2851 } | |
2852 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2853 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2854 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2855 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2856 // 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
|
2857 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2858 // Note: those in the vtable, should have been updated via adjust_method_entries |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2859 void InstanceKlass::adjust_default_methods(InstanceKlass* holder, bool* trace_name_printed) { |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2860 // 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
|
2861 if (default_methods() != NULL) { |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2862 for (int index = 0; index < default_methods()->length(); index ++) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2863 Method* old_method = default_methods()->at(index); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2864 if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2865 continue; // skip uninteresting entries |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2866 } |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2867 assert(!old_method->is_deleted(), "default methods may not be deleted"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2868 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2869 Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum()); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2870 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2871 assert(new_method != NULL, "method_with_idnum() should not be NULL"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2872 assert(old_method != new_method, "sanity check"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2873 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2874 default_methods()->at_put(index, new_method); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2875 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2876 if (!(*trace_name_printed)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2877 // RC_TRACE_MESG macro has an embedded ResourceMark |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2878 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2879 external_name(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2880 old_method->method_holder()->external_name())); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2881 *trace_name_printed = true; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2882 } |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2883 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2884 new_method->name()->as_C_string(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2885 new_method->signature()->as_C_string())); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2886 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2887 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2888 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2889 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2890 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2891 |
0 | 2892 // On-stack replacement stuff |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2893 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2894 // only one compilation can be active |
2895 NEEDS_CLEANUP | |
2896 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2897 OsrList_lock->lock_without_safepoint_check(); | |
2898 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2899 n->set_osr_link(osr_nmethods_head()); |
0 | 2900 set_osr_nmethods_head(n); |
1783 | 2901 // Raise the highest osr level if necessary |
2902 if (TieredCompilation) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2903 Method* m = n->method(); |
1783 | 2904 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2905 } | |
0 | 2906 // Remember to unlock again |
2907 OsrList_lock->unlock(); | |
1783 | 2908 |
2909 // Get rid of the osr methods for the same bci that have lower levels. | |
2910 if (TieredCompilation) { | |
2911 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2912 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2913 if (inv != NULL && inv->is_in_use()) { | |
2914 inv->make_not_entrant(); | |
2915 } | |
2916 } | |
2917 } | |
0 | 2918 } |
2919 | |
2920 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2921 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2922 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2923 OsrList_lock->lock_without_safepoint_check(); | |
2924 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2925 nmethod* last = NULL; | |
2926 nmethod* cur = osr_nmethods_head(); | |
1783 | 2927 int max_level = CompLevel_none; // Find the max comp level excluding n |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2928 Method* m = n->method(); |
0 | 2929 // Search for match |
2930 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2931 if (TieredCompilation && m == cur->method()) { |
1783 | 2932 // Find max level before n |
2933 max_level = MAX2(max_level, cur->comp_level()); | |
2934 } | |
0 | 2935 last = cur; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2936 cur = cur->osr_link(); |
0 | 2937 } |
1783 | 2938 nmethod* next = NULL; |
0 | 2939 if (cur == n) { |
1783 | 2940 next = cur->osr_link(); |
0 | 2941 if (last == NULL) { |
2942 // Remove first element | |
1783 | 2943 set_osr_nmethods_head(next); |
0 | 2944 } else { |
1783 | 2945 last->set_osr_link(next); |
0 | 2946 } |
2947 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2948 n->set_osr_link(NULL); |
1783 | 2949 if (TieredCompilation) { |
2950 cur = next; | |
2951 while (cur != NULL) { | |
2952 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2953 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2954 max_level = MAX2(max_level, cur->comp_level()); |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2955 } |
1783 | 2956 cur = cur->osr_link(); |
2957 } | |
2958 m->set_highest_osr_comp_level(max_level); | |
2959 } | |
0 | 2960 // Remember to unlock again |
2961 OsrList_lock->unlock(); | |
2962 } | |
2963 | |
20611
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2964 int InstanceKlass::mark_osr_nmethods(const Method* m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2965 // This is a short non-blocking critical region, so the no safepoint check is ok. |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2966 MutexLockerEx ml(OsrList_lock, Mutex::_no_safepoint_check_flag); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2967 nmethod* osr = osr_nmethods_head(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2968 int found = 0; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2969 while (osr != NULL) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2970 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2971 if (osr->method() == m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2972 osr->mark_for_deoptimization(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2973 found++; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2974 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2975 osr = osr->osr_link(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2976 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2977 return found; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2978 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2979 |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2980 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2981 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2982 OsrList_lock->lock_without_safepoint_check(); | |
2983 nmethod* osr = osr_nmethods_head(); | |
1783 | 2984 nmethod* best = NULL; |
0 | 2985 while (osr != NULL) { |
2986 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2987 // There can be a time when a c1 osr method exists but we are waiting |
2988 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2989 // the c1 version and only be able to find the c2 version. However | |
2990 // while we overflow in the c1 code at back branches we don't want to | |
2991 // try and switch to the same code as we are already running | |
2992 | |
0 | 2993 if (osr->method() == m && |
2994 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2995 if (match_level) { |
2996 if (osr->comp_level() == comp_level) { | |
2997 // Found a match - return it. | |
2998 OsrList_lock->unlock(); | |
2999 return osr; | |
3000 } | |
3001 } else { | |
3002 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
3003 if (osr->comp_level() == CompLevel_highest_tier) { | |
3004 // Found the best possible - return it. | |
3005 OsrList_lock->unlock(); | |
3006 return osr; | |
3007 } | |
3008 best = osr; | |
3009 } | |
3010 } | |
0 | 3011 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
3012 osr = osr->osr_link(); |
0 | 3013 } |
3014 OsrList_lock->unlock(); | |
1783 | 3015 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
3016 return best; | |
3017 } | |
0 | 3018 return NULL; |
3019 } | |
3020 | |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3021 bool InstanceKlass::add_member_name(Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3022 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
|
3023 MutexLocker ml(MemberNameTable_lock); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3024 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
|
3025 |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3026 // Check if method has been redefined while taking out MemberNameTable_lock, if so |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3027 // return false. We cannot cache obsolete methods. They will crash when the function |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3028 // is called! |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3029 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mem_name()); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3030 if (method->is_obsolete()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3031 return false; |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3032 } else if (method->is_old()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3033 // Replace method with redefined version |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3034 java_lang_invoke_MemberName::set_vmtarget(mem_name(), method_with_idnum(method->method_idnum())); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3035 } |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3036 |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3037 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
3038 _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
|
3039 } |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3040 _member_names->add_member_name(mem_name_wref); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3041 return true; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3042 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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parents:
9062
diff
changeset
|
3043 |
0 | 3044 // ----------------------------------------------------------------------------------------------------- |
6725
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changeset
|
3045 // Printing |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3046 |
0 | 3047 #ifndef PRODUCT |
3048 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3049 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3050 |
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|
3051 static const char* state_names[] = { |
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diff
changeset
|
3052 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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6964458: Reimplement class meta-data storage to use native memory
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|
3053 }; |
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6964458: Reimplement class meta-data storage to use native memory
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|
3054 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
12067
diff
changeset
|
3055 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
|
3056 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
3057 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
3058 st->print("%d : " INTPTR_FORMAT, i, e); |
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
|
3059 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
|
3060 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3061 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
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drchase
parents:
12067
diff
changeset
|
3062 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
3063 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3064 } |
b2e698d2276c
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parents:
12067
diff
changeset
|
3065 } |
b2e698d2276c
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changeset
|
3066 |
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|
3067 void InstanceKlass::print_on(outputStream* st) const { |
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3068 assert(is_klass(), "must be klass"); |
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|
3069 Klass::print_on(st); |
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|
3070 |
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|
3071 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
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|
3072 st->print(BULLET"klass size: %d", size()); st->cr(); |
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|
3073 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
|
3074 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
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|
3075 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
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|
3076 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
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diff
changeset
|
3077 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3078 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3079 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3080 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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diff
changeset
|
3081 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3082 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3083 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3084 } |
da91efe96a93
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parents:
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diff
changeset
|
3085 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3086 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3087 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3088 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3089 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3090 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
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coleenp
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6266
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changeset
|
3091 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3092 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3093 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3094 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3095 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3096 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3097 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3098 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3099 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:
6266
diff
changeset
|
3100 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
drchase
parents:
12067
diff
changeset
|
3101 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3102 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3103 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3104 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3105 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3106 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3107 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3108 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3109 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3110 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3111 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3112 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
|
3113 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3114 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3115 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3116 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
|
3117 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3118 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3119 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3120 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3121 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3122 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3123 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3124 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3125 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3126 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
coleenp
parents:
6266
diff
changeset
|
3127 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3128 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3129 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3130 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3131 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3132 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3133 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3134 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3135 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3136 } |
8031 | 3137 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3138 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3139 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3140 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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6266
diff
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|
3141 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3142 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3143 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3144 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
|
3145 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
|
3146 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3147 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3148 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3149 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
|
3150 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3151 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3152 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3153 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3154 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3155 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3156 generic_signature()->print_value_on(st); |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3157 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3158 } |
da91efe96a93
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coleenp
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diff
changeset
|
3159 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3160 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3161 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
|
3162 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
|
3163 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
|
3164 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
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3165 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
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3166 FieldPrinter print_static_field(st); |
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changeset
|
3167 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
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changeset
|
3168 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
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|
3169 FieldPrinter print_nonstatic_field(st); |
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changeset
|
3170 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
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changeset
|
3171 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3172 st->print(BULLET"non-static oop maps: "); |
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changeset
|
3173 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
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|
3174 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
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|
3175 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3176 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3177 map++; |
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diff
changeset
|
3178 } |
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changeset
|
3179 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3180 } |
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|
3181 |
da91efe96a93
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changeset
|
3182 #endif //PRODUCT |
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|
3183 |
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changeset
|
3184 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3185 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
|
3186 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
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changeset
|
3187 name()->print_value_on(st); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3188 } |
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|
3189 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3190 #ifndef PRODUCT |
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|
3191 |
0 | 3192 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
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changeset
|
3193 _st->print(BULLET); |
2376
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changeset
|
3194 if (_obj == NULL) { |
0 | 3195 fd->print_on(_st); |
3196 _st->cr(); | |
3197 } else { | |
3198 fd->print_on_for(_st, _obj); | |
3199 _st->cr(); | |
3200 } | |
3201 } | |
3202 | |
3203 | |
6725
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|
3204 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3205 Klass::oop_print_on(obj, st); |
3206 | |
6725
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changeset
|
3207 if (this == SystemDictionary::String_klass()) { |
0 | 3208 typeArrayOop value = java_lang_String::value(obj); |
3209 juint offset = java_lang_String::offset(obj); | |
3210 juint length = java_lang_String::length(obj); | |
3211 if (value != NULL && | |
3212 value->is_typeArray() && | |
3213 offset <= (juint) value->length() && | |
3214 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
3215 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3216 java_lang_String::print(obj, st); |
0 | 3217 st->cr(); |
3218 if (!WizardMode) return; // that is enough | |
3219 } | |
3220 } | |
3221 | |
665
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jrose
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changeset
|
3222 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
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parents:
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diff
changeset
|
3223 FieldPrinter print_field(st, 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
|
3224 do_nonstatic_fields(&print_field); |
0 | 3225 |
6725
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changeset
|
3226 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
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605
diff
changeset
|
3227 st->print(BULLET"signature: "); |
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diff
changeset
|
3228 java_lang_Class::print_signature(obj, st); |
c89f86385056
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diff
changeset
|
3229 st->cr(); |
6725
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|
3230 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
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diff
changeset
|
3231 st->print(BULLET"fake entry for mirror: "); |
6725
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changeset
|
3232 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3233 st->cr(); |
6725
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changeset
|
3234 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3235 st->print(BULLET"fake entry for array: "); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3236 array_klass->print_value_on_maybe_null(st); |
0 | 3237 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
3238 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
never
parents:
2357
diff
changeset
|
3239 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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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3240 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3241 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3242 InstanceKlass::cast(real_klass)->do_local_static_fields(&print_field); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3243 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
3244 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3245 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3246 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3247 st->cr(); |
0 | 3248 } |
3249 } | |
3250 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3251 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3252 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3253 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3254 st->print("a "); |
3255 name()->print_value_on(st); | |
3256 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3257 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3258 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3259 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3260 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3261 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3262 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3263 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3264 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3265 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3266 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3267 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3268 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3269 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3270 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3271 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3272 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3273 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3274 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3275 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3276 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3277 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3278 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3279 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3280 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3281 } else if (this == SystemDictionary::LambdaForm_klass()) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3282 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3283 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3284 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3285 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3286 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3287 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3288 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3289 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3290 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3291 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3292 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3293 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3294 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3295 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3296 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
3297 } |
0 | 3298 } |
3299 | |
6725
da91efe96a93
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coleenp
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|
3300 const char* InstanceKlass::internal_name() const { |
0 | 3301 return external_name(); |
3302 } | |
3303 | |
7956 | 3304 #if INCLUDE_SERVICES |
3305 // Size Statistics | |
3306 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3307 Klass::collect_statistics(sz); | |
3308 | |
3309 sz->_inst_size = HeapWordSize * size_helper(); | |
3310 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3311 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3312 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3313 ((is_interface() || is_anonymous()) ? | |
3314 align_object_offset(nonstatic_oop_map_size()) : | |
3315 nonstatic_oop_map_size()); | |
3316 | |
3317 int n = 0; | |
3318 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3319 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3320 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3321 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3322 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3323 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3324 sz->_ro_bytes += n; | |
3325 | |
3326 const ConstantPool* cp = constants(); | |
3327 if (cp) { | |
3328 cp->collect_statistics(sz); | |
3329 } | |
3330 | |
3331 const Annotations* anno = annotations(); | |
3332 if (anno) { | |
3333 anno->collect_statistics(sz); | |
3334 } | |
3335 | |
3336 const Array<Method*>* methods_array = methods(); | |
3337 if (methods()) { | |
3338 for (int i = 0; i < methods_array->length(); i++) { | |
3339 Method* method = methods_array->at(i); | |
3340 if (method) { | |
3341 sz->_method_count ++; | |
3342 method->collect_statistics(sz); | |
3343 } | |
3344 } | |
3345 } | |
3346 } | |
3347 #endif // INCLUDE_SERVICES | |
3348 | |
0 | 3349 // Verification |
3350 | |
3351 class VerifyFieldClosure: public OopClosure { | |
113
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3352 protected: |
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3353 template <class T> void do_oop_work(T* p) { |
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3354 oop obj = oopDesc::load_decode_heap_oop(p); |
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3355 if (!obj->is_oop_or_null()) { |
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3356 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3357 Universe::print(); |
3358 guarantee(false, "boom"); | |
3359 } | |
3360 } | |
113
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3361 public: |
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3362 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3363 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3364 }; |
3365 | |
17674
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|
3366 void InstanceKlass::verify_on(outputStream* st) { |
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3367 #ifndef PRODUCT |
11034 | 3368 // Avoid redundant verifies, this really should be in product. |
6725
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3369 if (_verify_count == Universe::verify_count()) return; |
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3370 _verify_count = Universe::verify_count(); |
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3371 #endif |
11034 | 3372 |
3373 // Verify Klass | |
17674
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3374 Klass::verify_on(st); |
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3375 |
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3376 // Verify that klass is present in ClassLoaderData |
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|
3377 guarantee(class_loader_data()->contains_klass(this), |
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3378 "this class isn't found in class loader data"); |
6725
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3379 |
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3380 // Verify vtables |
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3381 if (is_linked()) { |
11034 | 3382 ResourceMark rm; |
6725
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3383 // $$$ This used to be done only for m/s collections. Doing it |
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3384 // always seemed a valid generalization. (DLD -- 6/00) |
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3385 vtable()->verify(st); |
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|
3386 } |
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3387 |
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3388 // Verify first subklass |
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3389 if (subklass_oop() != NULL) { |
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3390 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3391 } |
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|
3392 |
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|
3393 // Verify siblings |
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3394 Klass* super = this->super(); |
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3395 Klass* sib = next_sibling(); |
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3396 if (sib != NULL) { |
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|
3397 if (sib == this) { |
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3398 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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3399 } |
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|
3400 |
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3401 guarantee(sib->is_klass(), "should be klass"); |
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3402 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3403 } |
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|
3404 |
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3405 // Verify implementor fields |
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|
3406 Klass* im = implementor(); |
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|
3407 if (im != NULL) { |
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|
3408 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3409 guarantee(im->is_klass(), "should be klass"); |
6983 | 3410 guarantee(!im->is_interface() || im == this, |
6725
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|
3411 "implementors cannot be interfaces"); |
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|
3412 } |
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|
3413 |
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3414 // Verify local interfaces |
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3415 if (local_interfaces()) { |
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3416 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3417 for (int j = 0; j < local_interfaces->length(); j++) { |
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3418 Klass* e = local_interfaces->at(j); |
6983 | 3419 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3420 } |
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|
3421 } |
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|
3422 |
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3423 // Verify transitive interfaces |
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|
3424 if (transitive_interfaces() != NULL) { |
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|
3425 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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3426 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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|
3427 Klass* e = transitive_interfaces->at(j); |
6983 | 3428 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3429 } |
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|
3430 } |
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|
3431 |
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|
3432 // Verify methods |
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|
3433 if (methods() != NULL) { |
da91efe96a93
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|
3434 Array<Method*>* methods = this->methods(); |
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|
3435 for (int j = 0; j < methods->length(); j++) { |
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|
3436 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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|
3437 } |
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|
3438 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3439 Method* m1 = methods->at(j); |
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3440 Method* m2 = methods->at(j + 1); |
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|
3441 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3442 } |
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|
3443 } |
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|
3444 |
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|
3445 // Verify method ordering |
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|
3446 if (method_ordering() != NULL) { |
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|
3447 Array<int>* method_ordering = this->method_ordering(); |
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|
3448 int length = method_ordering->length(); |
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|
3449 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3450 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
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|
3451 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3452 jlong sum = 0; |
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|
3453 for (int j = 0; j < length; j++) { |
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|
3454 int original_index = method_ordering->at(j); |
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|
3455 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3456 guarantee(original_index < length, "invalid method ordering index"); |
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|
3457 sum += original_index; |
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|
3458 } |
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|
3459 // Verify sum of indices 0,1,...,length-1 |
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|
3460 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3461 } else { |
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|
3462 guarantee(length == 0, "invalid method ordering length"); |
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|
3463 } |
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|
3464 } |
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|
3465 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3466 // Verify default methods |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3467 if (default_methods() != NULL) { |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3468 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3469 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3470 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3471 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3472 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3473 Method* m1 = methods->at(j); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3474 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3475 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
|
3476 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3477 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3478 |
6725
da91efe96a93
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|
3479 // Verify JNI static field identifiers |
da91efe96a93
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|
3480 if (jni_ids() != NULL) { |
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|
3481 jni_ids()->verify(this); |
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|
3482 } |
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|
3483 |
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|
3484 // Verify other fields |
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|
3485 if (array_klasses() != NULL) { |
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3486 guarantee(array_klasses()->is_klass(), "should be klass"); |
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3487 } |
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3488 if (constants() != NULL) { |
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3489 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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3490 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
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|
3491 const Klass* host = host_klass(); |
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3492 if (host != NULL) { |
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|
3493 guarantee(host->is_klass(), "should be klass"); |
6725
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3494 } |
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|
3495 } |
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|
3496 |
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3497 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3498 Klass::oop_verify_on(obj, st); |
3499 VerifyFieldClosure blk; | |
6725
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3500 obj->oop_iterate_no_header(&blk); |
0 | 3501 } |
3502 | |
6725
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3503 |
113
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3504 // JNIid class for jfieldIDs only |
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3505 // Note to reviewers: |
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3506 // These JNI functions are just moved over to column 1 and not changed |
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3507 // in the compressed oops workspace. |
6725
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3508 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3509 _holder = holder; |
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3510 _offset = offset; |
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3511 _next = next; |
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3512 debug_only(_is_static_field_id = false;) |
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3513 } |
0 | 3514 |
3515 | |
113
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|
3516 JNIid* JNIid::find(int offset) { |
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3517 JNIid* current = this; |
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3518 while (current != NULL) { |
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3519 if (current->offset() == offset) return current; |
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3520 current = current->next(); |
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|
3521 } |
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|
3522 return NULL; |
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|
3523 } |
0 | 3524 |
3525 void JNIid::deallocate(JNIid* current) { | |
113
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|
3526 while (current != NULL) { |
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|
3527 JNIid* next = current->next(); |
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|
3528 delete current; |
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|
3529 current = next; |
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|
3530 } |
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|
3531 } |
0 | 3532 |
3533 | |
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3534 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
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|
3535 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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3536 int end_field_offset; |
6725
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3537 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3538 |
113
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3539 JNIid* current = this; |
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3540 while (current != NULL) { |
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|
3541 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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|
3542 #ifdef ASSERT |
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|
3543 int o = current->offset(); |
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3544 if (current->is_static_field_id()) { |
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|
3545 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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|
3546 } |
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|
3547 #endif |
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|
3548 current = current->next(); |
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|
3549 } |
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|
3550 } |
0 | 3551 |
3552 | |
3553 #ifdef ASSERT | |
6725
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3554 void InstanceKlass::set_init_state(ClassState state) { |
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3555 bool good_state = is_shared() ? (_init_state <= state) |
113
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3556 : (_init_state < state); |
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|
3557 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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|
3558 _init_state = (u1)state; |
113
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|
3559 } |
0 | 3560 #endif |
3561 | |
3562 | |
3563 // RedefineClasses() support for previous versions: | |
3564 | |
6725
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|
3565 // Purge previous versions |
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|
3566 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3567 if (ik->previous_versions() != NULL) { |
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3568 // This klass has previous versions so see what we can cleanup |
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|
3569 // while it is safe to do so. |
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|
3570 |
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|
3571 int deleted_count = 0; // leave debugging breadcrumbs |
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|
3572 int live_count = 0; |
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|
3573 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3574 ClassLoaderData::the_null_class_loader_data() : |
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|
3575 ik->class_loader_data(); |
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|
3576 |
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|
3577 // RC_TRACE macro has an embedded ResourceMark |
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|
3578 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3579 ik->external_name(), ik->previous_versions()->length())); |
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|
3580 |
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|
3581 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3582 // check the previous versions array |
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|
3583 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3584 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3585 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3586 |
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|
3587 ConstantPool* pvcp = cp_ref; |
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3588 if (!pvcp->on_stack()) { |
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|
3589 // If the constant pool isn't on stack, none of the methods |
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3590 // are executing. Delete all the methods, the constant pool and |
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|
3591 // and this previous version node. |
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|
3592 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3593 if (method_refs != NULL) { |
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3594 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3595 Method* method = method_refs->at(j); |
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|
3596 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3597 method_refs->remove_at(j); |
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|
3598 // method will be freed with associated class. |
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|
3599 } |
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|
3600 } |
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|
3601 // Remove the constant pool |
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|
3602 delete pv_node; |
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|
3603 // Since we are traversing the array backwards, we don't have to |
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|
3604 // do anything special with the index. |
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|
3605 ik->previous_versions()->remove_at(i); |
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|
3606 deleted_count++; |
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|
3607 continue; |
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|
3608 } else { |
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|
3609 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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|
3610 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3611 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3612 live_count++; |
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|
3613 } |
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|
3614 |
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|
3615 // At least one method is live in this previous version, clean out |
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3616 // the others or mark them as obsolete. |
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3617 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3618 if (method_refs != NULL) { |
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|
3619 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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|
3620 method_refs->length())); |
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|
3621 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3622 Method* method = method_refs->at(j); |
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|
3623 assert(method != NULL, "method ref was unexpectedly cleared"); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3624 |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3625 // Remove the emcp method if it's not executing |
da91efe96a93
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diff
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|
3626 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
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diff
changeset
|
3627 // method, mark it as obsolete but leave it to clean up later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3628 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3629 method_refs->remove_at(j); |
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diff
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|
3630 } else if (emcp_method_count == 0) { |
da91efe96a93
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diff
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|
3631 method->set_is_obsolete(); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3632 } else { |
da91efe96a93
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diff
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|
3633 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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diff
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|
3634 RC_TRACE(0x00000200, |
da91efe96a93
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diff
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|
3635 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3636 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3637 method->signature()->as_C_string(), j, i)); |
da91efe96a93
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diff
changeset
|
3638 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3639 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3640 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3641 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3642 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
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diff
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|
3643 RC_TRACE(0x00000200, |
da91efe96a93
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diff
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|
3644 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
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diff
changeset
|
3645 deleted_count)); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3646 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3647 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3648 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3649 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3650 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3651 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
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coleenp
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diff
changeset
|
3652 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3653 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3654 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3655 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3656 // Potentially add an information node that contains pointers to the |
0 | 3657 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3658 // This is also where we clean out any unused references. |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3659 // Note that while we delete nodes from the _previous_versions |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3660 // array, we never delete the array itself until the klass is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3661 // unloaded. The has_been_redefined() query depends on that fact. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3662 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3663 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3664 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3665 assert(Thread::current()->is_VM_thread(), |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3666 "only VMThread can add previous versions"); |
0 | 3667 |
3668 if (_previous_versions == NULL) { | |
3669 // This is the first previous version so make some space. | |
3670 // Start with 2 elements under the assumption that the class | |
3671 // won't be redefined much. | |
6197 | 3672 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3673 GrowableArray<PreviousVersionNode *>(2, true); |
3674 } | |
3675 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3676 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3677 |
0 | 3678 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3679 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3680 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3681 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3682 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3683 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3684 // If the constant pool for this previous version of the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3685 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3686 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3687 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3688 // we still need to examine older previous versions below. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3689 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3690 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3691 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3692 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3693 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3694 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3695 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3696 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3697 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3698 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3699 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3700 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3701 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3702 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
|
3703 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3704 // 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
parents:
12067
diff
changeset
|
3705 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3706 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3707 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3708 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3709 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3710 // 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
|
3711 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3712 } |
0 | 3713 } |
3714 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3715 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3716 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3717 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3718 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3719 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3720 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3721 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3722 // 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
parents:
6266
diff
changeset
|
3723 // is a good time to clear out unused references. |
0 | 3724 |
3725 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3726 _previous_versions->length())); | |
3727 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3728 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3729 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3730 |
3731 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3732 | |
3733 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
|
3734 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3735 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3736 // clear out any matching EMCP method entries the hard way. |
3737 int local_count = 0; | |
3738 for (int i = 0; i < old_methods->length(); i++) { | |
3739 if (!emcp_methods->at(i)) { | |
3740 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3741 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3742 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3743 Symbol* m_signature = old_method->signature(); |
0 | 3744 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3745 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3746 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
|
3747 // 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
|
3748 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3749 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3750 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3751 if (method_refs == NULL) { |
3752 // We have run into a PreviousVersion generation where | |
3753 // all methods were made obsolete during that generation's | |
3754 // RedefineClasses() operation. At the time of that | |
3755 // operation, all EMCP methods were flushed so we don't | |
3756 // have to go back any further. | |
3757 // | |
3758 // A NULL method_refs is different than an empty method_refs. | |
3759 // We cannot infer any optimizations about older generations | |
3760 // from an empty method_refs for the current generation. | |
3761 break; | |
3762 } | |
3763 | |
3764 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
|
3765 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3766 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3767 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3768 method->name() == m_name && |
0 | 3769 method->signature() == m_signature) { |
3770 // The current RedefineClasses() call has made all EMCP | |
3771 // 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
|
3772 // and remove the reference. |
0 | 3773 RC_TRACE(0x00000400, |
3774 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3775 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3776 | |
3777 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3778 // 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
|
3779 // clean up later. |
0 | 3780 break; |
3781 } | |
3782 } | |
3783 | |
3784 // The previous loop may not find a matching EMCP method, but | |
3785 // that doesn't mean that we can optimize and not go any | |
3786 // further back in the PreviousVersion generations. The EMCP | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3787 // method for this generation could have already been deleted, |
0 | 3788 // but there still may be an older EMCP method that has not |
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3789 // been deleted. |
0 | 3790 } |
3791 | |
3792 if (++local_count >= obsolete_method_count) { | |
3793 // no more obsolete methods so bail out now | |
3794 break; | |
3795 } | |
3796 } | |
3797 } | |
3798 } | |
3799 } // end add_previous_version() | |
3800 | |
3801 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3802 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3803 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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3804 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3805 } // end has_previous_version() |
3806 | |
6725
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|
3807 |
22933
1a9c5e6e13b7
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|
3808 InstanceKlass* InstanceKlass::get_klass_version(int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3809 if (constants()->version() == version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3810 return this; |
1a9c5e6e13b7
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|
3811 } |
1a9c5e6e13b7
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parents:
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|
3812 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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|
3813 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
1a9c5e6e13b7
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|
3814 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3815 ConstantPool* prev_cp = pv_node->prev_constant_pool(); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3816 if (prev_cp->version() == version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3817 return prev_cp->pool_holder(); |
1a9c5e6e13b7
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|
3818 } |
1a9c5e6e13b7
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diff
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|
3819 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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diff
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|
3820 return NULL; // None found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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diff
changeset
|
3821 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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diff
changeset
|
3822 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3823 |
6725
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|
3824 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3825 Method* m = NULL; |
0 | 3826 if (idnum < methods()->length()) { |
6725
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|
3827 m = methods()->at(idnum); |
0 | 3828 } |
3829 if (m == NULL || m->method_idnum() != idnum) { | |
3830 for (int index = 0; index < methods()->length(); ++index) { | |
6725
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|
3831 m = methods()->at(index); |
0 | 3832 if (m->method_idnum() == idnum) { |
3833 return m; | |
3834 } | |
3835 } | |
12281
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|
3836 // None found, return null for the caller to handle. |
4f9a42c33738
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changeset
|
3837 return NULL; |
0 | 3838 } |
3839 return m; | |
3840 } | |
3841 | |
22933
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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changeset
|
3842 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3843 Method* InstanceKlass::method_with_orig_idnum(int idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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diff
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|
3844 if (idnum >= methods()->length()) { |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
changeset
|
3845 return NULL; |
1a9c5e6e13b7
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sspitsyn
parents:
22886
diff
changeset
|
3846 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3847 Method* m = methods()->at(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
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|
3848 if (m != NULL && m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
changeset
|
3849 return m; |
1a9c5e6e13b7
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22886
diff
changeset
|
3850 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3851 // Obsolete method idnum does not match the original idnum |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3852 for (int index = 0; index < methods()->length(); ++index) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3853 m = methods()->at(index); |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
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|
3854 if (m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3855 return m; |
1a9c5e6e13b7
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sspitsyn
parents:
22886
diff
changeset
|
3856 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3857 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3858 // None found, return null for the caller to handle. |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3859 return NULL; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3860 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3861 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3862 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3863 Method* InstanceKlass::method_with_orig_idnum(int idnum, int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3864 InstanceKlass* holder = get_klass_version(version); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3865 if (holder == NULL) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3866 return NULL; // The version of klass is gone, no method is found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3867 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3868 Method* method = holder->method_with_orig_idnum(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3869 return method; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3870 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3871 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3872 |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3873 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3874 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3875 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3876 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3877 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3878 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3879 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
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11096
diff
changeset
|
3880 |
0 | 3881 |
3882 // Construct a PreviousVersionNode entry for the array hung off | |
6725
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|
3883 // the InstanceKlass. |
da91efe96a93
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|
3884 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
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coleenp
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|
3885 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3886 |
3887 _prev_constant_pool = prev_constant_pool; | |
3888 _prev_EMCP_methods = prev_EMCP_methods; | |
3889 } | |
3890 | |
3891 | |
3892 // Destroy a PreviousVersionNode | |
3893 PreviousVersionNode::~PreviousVersionNode() { | |
3894 if (_prev_constant_pool != NULL) { | |
6725
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|
3895 _prev_constant_pool = NULL; |
0 | 3896 } |
3897 | |
3898 if (_prev_EMCP_methods != NULL) { | |
3899 delete _prev_EMCP_methods; | |
3900 } | |
3901 } | |
3902 | |
3903 // Construct a helper for walking the previous versions array | |
12281
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|
3904 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
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coleenp
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|
3905 _thread = thread; |
0 | 3906 _previous_versions = ik->previous_versions(); |
3907 _current_index = 0; | |
3908 _current_p = NULL; | |
12281
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|
3909 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3910 } |
3911 | |
3912 | |
3913 // Return the interesting information for the next previous version | |
3914 // of the klass. Returns NULL if there are no more previous versions. | |
12281
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|
3915 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3916 if (_previous_versions == NULL) { |
3917 // no previous versions so nothing to return | |
3918 return NULL; | |
3919 } | |
3920 | |
12281
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|
3921 _current_p = NULL; // reset to NULL |
4f9a42c33738
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coleenp
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diff
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|
3922 _current_constant_pool_handle = NULL; |
0 | 3923 |
3924 int length = _previous_versions->length(); | |
3925 | |
3926 while (_current_index < length) { | |
3927 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
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|
3928 |
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changeset
|
3929 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
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|
3930 // which keeps all the methods from being deallocated. |
4f9a42c33738
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diff
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|
3931 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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|
3932 _current_p = pv_node; |
4f9a42c33738
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coleenp
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12067
diff
changeset
|
3933 return pv_node; |
0 | 3934 } |
3935 | |
3936 return NULL; | |
3937 } // end next_previous_version() |