Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlass.cpp @ 23893:50e62b688ddc
8150752: Share Class Data
Reviewed-by: acorn, hseigel, mschoene
author | iklam |
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date | Thu, 24 Mar 2016 21:38:15 -0700 |
parents | 5cece4584b8e |
children | cb4af293fe70 |
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 |
729 if (!this_oop()->is_shared()) { | |
730 ResourceMark rm(THREAD); | |
731 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
732 this_oop->itable()->initialize_itable(true, CHECK_false); | |
733 } | |
734 #ifdef ASSERT | |
735 else { | |
736 ResourceMark rm(THREAD); | |
737 this_oop->vtable()->verify(tty, true); | |
738 // In case itable verification is ever added. | |
739 // this_oop->itable()->verify(tty, true); | |
740 } | |
741 #endif | |
742 this_oop->set_init_state(linked); | |
743 if (JvmtiExport::should_post_class_prepare()) { | |
744 Thread *thread = THREAD; | |
745 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
746 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
747 } | |
748 } | |
749 } | |
750 return true; | |
751 } | |
752 | |
753 | |
754 // Rewrite the byte codes of all of the methods of a class. | |
755 // The rewriter must be called exactly once. Rewriting must happen after | |
756 // verification but before the first method of the class is executed. | |
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757 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 758 assert(is_loaded(), "must be loaded"); |
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759 instanceKlassHandle this_oop(THREAD, this); |
0 | 760 if (this_oop->is_rewritten()) { |
761 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
762 return; | |
763 } | |
3748 | 764 Rewriter::rewrite(this_oop, CHECK); |
0 | 765 this_oop->set_rewritten(); |
766 } | |
767 | |
3748 | 768 // Now relocate and link method entry points after class is rewritten. |
769 // This is outside is_rewritten flag. In case of an exception, it can be | |
770 // executed more than once. | |
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771 void InstanceKlass::link_methods(TRAPS) { |
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772 int len = methods()->length(); |
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773 for (int i = len-1; i >= 0; i--) { |
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774 methodHandle m(THREAD, methods()->at(i)); |
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775 |
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776 // Set up method entry points for compiler and interpreter . |
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777 m->link_method(m, CHECK); |
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778 |
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779 // This is for JVMTI and unrelated to relocator but the last thing we do |
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780 #ifdef ASSERT |
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781 if (StressMethodComparator) { |
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782 ResourceMark rm(THREAD); |
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783 static int nmc = 0; |
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784 for (int j = i; j >= 0 && j >= i-4; j--) { |
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785 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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786 bool z = MethodComparator::methods_EMCP(m(), |
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787 methods()->at(j)); |
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788 if (j == i && !z) { |
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789 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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790 assert(z, "method must compare equal to itself"); |
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791 } |
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792 } |
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793 } |
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794 #endif //ASSERT |
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795 } |
3748 | 796 } |
797 | |
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798 // Eagerly initialize superinterfaces that declare default methods (concrete instance: any access) |
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799 void InstanceKlass::initialize_super_interfaces(instanceKlassHandle this_oop, TRAPS) { |
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800 if (this_oop->has_default_methods()) { |
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801 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { |
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802 Klass* iface = this_oop->local_interfaces()->at(i); |
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803 InstanceKlass* ik = InstanceKlass::cast(iface); |
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804 if (ik->should_be_initialized()) { |
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805 if (ik->has_default_methods()) { |
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806 ik->initialize_super_interfaces(ik, THREAD); |
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807 } |
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808 // Only initialize() interfaces that "declare" concrete methods. |
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809 // has_default_methods drives searching superinterfaces since it |
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810 // means has_default_methods in its superinterface hierarchy |
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811 if (!HAS_PENDING_EXCEPTION && ik->declares_default_methods()) { |
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812 ik->initialize(THREAD); |
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813 } |
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814 if (HAS_PENDING_EXCEPTION) { |
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815 Handle e(THREAD, PENDING_EXCEPTION); |
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816 CLEAR_PENDING_EXCEPTION; |
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817 { |
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818 EXCEPTION_MARK; |
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819 // Locks object, set state, and notify all waiting threads |
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820 this_oop->set_initialization_state_and_notify( |
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821 initialization_error, THREAD); |
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822 |
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823 // ignore any exception thrown, superclass initialization error is |
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824 // thrown below |
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825 CLEAR_PENDING_EXCEPTION; |
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826 } |
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827 THROW_OOP(e()); |
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828 } |
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829 } |
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830 } |
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831 } |
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832 } |
0 | 833 |
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834 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 835 // Make sure klass is linked (verified) before initialization |
836 // A class could already be verified, since it has been reflected upon. | |
837 this_oop->link_class(CHECK); | |
838 | |
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839 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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840 |
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841 bool wait = false; |
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842 |
0 | 843 // refer to the JVM book page 47 for description of steps |
844 // Step 1 | |
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845 { |
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846 oop init_lock = this_oop->init_lock(); |
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847 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 848 |
849 Thread *self = THREAD; // it's passed the current thread | |
850 | |
851 // Step 2 | |
852 // If we were to use wait() instead of waitInterruptibly() then | |
853 // we might end up throwing IE from link/symbol resolution sites | |
854 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
855 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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856 wait = true; |
0 | 857 ol.waitUninterruptibly(CHECK); |
858 } | |
859 | |
860 // Step 3 | |
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861 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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862 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 863 return; |
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864 } |
0 | 865 |
866 // Step 4 | |
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867 if (this_oop->is_initialized()) { |
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868 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 869 return; |
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870 } |
0 | 871 |
872 // Step 5 | |
873 if (this_oop->is_in_error_state()) { | |
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874 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 875 ResourceMark rm(THREAD); |
876 const char* desc = "Could not initialize class "; | |
877 const char* className = this_oop->external_name(); | |
878 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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879 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 880 if (NULL == message) { |
881 // Out of memory: can't create detailed error message | |
882 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
883 } else { | |
884 jio_snprintf(message, msglen, "%s%s", desc, className); | |
885 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
886 } | |
887 } | |
888 | |
889 // Step 6 | |
890 this_oop->set_init_state(being_initialized); | |
891 this_oop->set_init_thread(self); | |
892 } | |
893 | |
894 // Step 7 | |
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895 Klass* super_klass = this_oop->super(); |
6983 | 896 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
897 super_klass->initialize(THREAD); | |
0 | 898 |
899 if (HAS_PENDING_EXCEPTION) { | |
900 Handle e(THREAD, PENDING_EXCEPTION); | |
901 CLEAR_PENDING_EXCEPTION; | |
902 { | |
903 EXCEPTION_MARK; | |
904 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
905 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
906 } | |
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907 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 908 THROW_OOP(e()); |
909 } | |
910 } | |
911 | |
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912 // Recursively initialize any superinterfaces that declare default methods |
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913 // Only need to recurse if has_default_methods which includes declaring and |
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914 // inheriting default methods |
6934 | 915 if (this_oop->has_default_methods()) { |
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916 this_oop->initialize_super_interfaces(this_oop, CHECK); |
6934 | 917 } |
918 | |
0 | 919 // Step 8 |
920 { | |
921 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
922 JavaThread* jt = (JavaThread*)THREAD; | |
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923 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 924 // Timer includes any side effects of class initialization (resolution, |
925 // etc), but not recursive entry into call_class_initializer(). | |
875
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926 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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927 ClassLoader::perf_class_init_selftime(), |
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928 ClassLoader::perf_classes_inited(), |
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929 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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930 jt->get_thread_stat()->perf_timers_addr(), |
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931 PerfClassTraceTime::CLASS_CLINIT); |
0 | 932 this_oop->call_class_initializer(THREAD); |
933 } | |
934 | |
935 // Step 9 | |
936 if (!HAS_PENDING_EXCEPTION) { | |
937 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
938 { ResourceMark rm(THREAD); | |
939 debug_only(this_oop->vtable()->verify(tty, true);) | |
940 } | |
941 } | |
942 else { | |
943 // Step 10 and 11 | |
944 Handle e(THREAD, PENDING_EXCEPTION); | |
945 CLEAR_PENDING_EXCEPTION; | |
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946 // JVMTI has already reported the pending exception |
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947 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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948 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 949 { |
950 EXCEPTION_MARK; | |
951 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
952 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
23007
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953 // JVMTI has already reported the pending exception |
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954 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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955 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 956 } |
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957 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 958 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 959 THROW_OOP(e()); |
960 } else { | |
961 JavaCallArguments args(e); | |
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962 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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963 vmSymbols::throwable_void_signature(), |
0 | 964 &args); |
965 } | |
966 } | |
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967 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 968 } |
969 | |
970 | |
971 // Note: implementation moved to static method to expose the this pointer. | |
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972 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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973 instanceKlassHandle kh(THREAD, this); |
0 | 974 set_initialization_state_and_notify_impl(kh, state, CHECK); |
975 } | |
976 | |
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977 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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978 oop init_lock = this_oop->init_lock(); |
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979 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 980 this_oop->set_init_state(state); |
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981 this_oop->fence_and_clear_init_lock(); |
0 | 982 ol.notify_all(CHECK); |
983 } | |
984 | |
5998
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985 // The embedded _implementor field can only record one implementor. |
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986 // When there are more than one implementors, the _implementor field |
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987 // is set to the interface Klass* itself. Following are the possible |
5998
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988 // values for the _implementor field: |
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989 // NULL - no implementor |
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990 // implementor Klass* - one implementor |
5998
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991 // self - more than one implementor |
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992 // |
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993 // The _implementor field only exists for interfaces. |
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994 void InstanceKlass::add_implementor(Klass* k) { |
0 | 995 assert(Compile_lock->owned_by_self(), ""); |
5998
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996 assert(is_interface(), "not interface"); |
0 | 997 // Filter out my subinterfaces. |
998 // (Note: Interfaces are never on the subklass list.) | |
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999 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 1000 |
1001 // Filter out subclasses whose supers already implement me. | |
1002 // (Note: CHA must walk subclasses of direct implementors | |
1003 // in order to locate indirect implementors.) | |
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1004 Klass* sk = InstanceKlass::cast(k)->super(); |
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1005 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 1006 // We only need to check one immediate superclass, since the |
1007 // implements_interface query looks at transitive_interfaces. | |
1008 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
1009 return; | |
1010 | |
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1011 Klass* ik = implementor(); |
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1012 if (ik == NULL) { |
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1013 set_implementor(k); |
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1014 } else if (ik != this) { |
5998
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1015 // There is already an implementor. Use itself as an indicator of |
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1016 // more than one implementors. |
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1017 set_implementor(this); |
0 | 1018 } |
1019 | |
1020 // The implementor also implements the transitive_interfaces | |
1021 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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1022 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 1023 } |
1024 } | |
1025 | |
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1026 void InstanceKlass::init_implementor() { |
5998
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1027 if (is_interface()) { |
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1028 set_implementor(NULL); |
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1029 } |
0 | 1030 } |
1031 | |
1032 | |
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1033 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1034 // link this class into the implementors list of every interface it implements |
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1035 Klass* this_as_klass_oop = this; |
0 | 1036 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1037 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1038 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1039 assert(interf->is_interface(), "expected interface"); |
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1040 interf->add_implementor(this_as_klass_oop); |
0 | 1041 } |
1042 } | |
1043 | |
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1044 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1045 if (is_interface()) |
1046 return false; | |
1047 else | |
1048 return Klass::can_be_primary_super_slow(); | |
1049 } | |
1050 | |
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1051 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1052 // The secondaries are the implemented interfaces. |
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1053 InstanceKlass* ik = InstanceKlass::cast(this); |
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1054 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1055 int num_secondaries = num_extra_slots + interfaces->length(); |
1056 if (num_secondaries == 0) { | |
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1057 // Must share this for correct bootstrapping! |
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1058 set_secondary_supers(Universe::the_empty_klass_array()); |
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1059 return NULL; |
0 | 1060 } else if (num_extra_slots == 0) { |
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1061 // The secondary super list is exactly the same as the transitive interfaces. |
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1062 // Redefine classes has to be careful not to delete this! |
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1063 set_secondary_supers(interfaces); |
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1064 return NULL; |
0 | 1065 } else { |
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1066 // Copy transitive interfaces to a temporary growable array to be constructed |
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1067 // into the secondary super list with extra slots. |
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1068 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1069 for (int i = 0; i < interfaces->length(); i++) { |
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1070 secondaries->push(interfaces->at(i)); |
0 | 1071 } |
1072 return secondaries; | |
1073 } | |
1074 } | |
1075 | |
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1076 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1077 if (k->is_interface()) { |
0 | 1078 return implements_interface(k); |
1079 } else { | |
1080 return Klass::compute_is_subtype_of(k); | |
1081 } | |
1082 } | |
1083 | |
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1084 bool InstanceKlass::implements_interface(Klass* k) const { |
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1085 if (this == k) return true; |
6983 | 1086 assert(k->is_interface(), "should be an interface class"); |
0 | 1087 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1088 if (transitive_interfaces()->at(i) == k) { |
0 | 1089 return true; |
1090 } | |
1091 } | |
1092 return false; | |
1093 } | |
1094 | |
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1095 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1096 // Verify direct super interface |
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1097 if (this == k) return true; |
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1098 assert(k->is_interface(), "should be an interface class"); |
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1099 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1100 if (local_interfaces()->at(i) == k) { |
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1101 return true; |
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1102 } |
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1103 } |
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1104 return false; |
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1105 } |
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1106 |
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1107 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1108 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1109 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1110 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1111 JvmtiExport::post_array_size_exhausted(); |
0 | 1112 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1113 } | |
1114 int size = objArrayOopDesc::object_size(length); | |
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1115 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1116 KlassHandle h_ak (THREAD, ak); |
1117 objArrayOop o = | |
1118 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1119 return o; | |
1120 } | |
1121 | |
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1122 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1123 if (TraceFinalizerRegistration) { |
1124 tty->print("Registered "); | |
1125 i->print_value_on(tty); | |
1126 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1127 } | |
1128 instanceHandle h_i(THREAD, i); | |
1129 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1130 JavaValue result(T_VOID); | |
1131 JavaCallArguments args(h_i); | |
1132 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1133 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1134 return h_i(); | |
1135 } | |
1136 | |
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1137 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1138 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1139 int size = size_helper(); // Query before forming handle. | |
1140 | |
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1141 KlassHandle h_k(THREAD, this); |
0 | 1142 |
1143 instanceOop i; | |
1144 | |
1145 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1146 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1147 i = register_finalizer(i, CHECK_NULL); | |
1148 } | |
1149 return i; | |
1150 } | |
1151 | |
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1152 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1153 if (is_interface() || is_abstract()) { |
1154 ResourceMark rm(THREAD); | |
1155 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1156 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1157 } | |
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1158 if (this == SystemDictionary::Class_klass()) { |
0 | 1159 ResourceMark rm(THREAD); |
1160 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1161 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1162 } | |
1163 } | |
1164 | |
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1165 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1166 instanceKlassHandle this_oop(THREAD, this); |
0 | 1167 return array_klass_impl(this_oop, or_null, n, THREAD); |
1168 } | |
1169 | |
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1170 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1171 if (this_oop->array_klasses() == NULL) { |
1172 if (or_null) return NULL; | |
1173 | |
1174 ResourceMark rm; | |
1175 JavaThread *jt = (JavaThread *)THREAD; | |
1176 { | |
1177 // Atomic creation of array_klasses | |
1178 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1179 MutexLocker ma(MultiArray_lock, THREAD); | |
1180 | |
1181 // Check if update has already taken place | |
1182 if (this_oop->array_klasses() == NULL) { | |
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1183 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1184 this_oop->set_array_klasses(k); |
1185 } | |
1186 } | |
1187 } | |
1188 // _this will always be set at this point | |
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1189 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1190 if (or_null) { |
1191 return oak->array_klass_or_null(n); | |
1192 } | |
1193 return oak->array_klass(n, CHECK_NULL); | |
1194 } | |
1195 | |
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1196 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1197 return array_klass_impl(or_null, 1, THREAD); |
1198 } | |
1199 | |
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1200 void InstanceKlass::call_class_initializer(TRAPS) { |
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1201 instanceKlassHandle ik (THREAD, this); |
0 | 1202 call_class_initializer_impl(ik, THREAD); |
1203 } | |
1204 | |
1205 static int call_class_initializer_impl_counter = 0; // for debugging | |
1206 | |
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1207 Method* InstanceKlass::class_initializer() { |
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1208 Method* clinit = find_method( |
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1209 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1210 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1211 return clinit; |
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1212 } |
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1213 return NULL; |
0 | 1214 } |
1215 | |
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1216 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1217 if (ReplayCompiles && |
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1218 (ReplaySuppressInitializers == 1 || |
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1219 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1220 // Hide the existence of the initializer for the purpose of replaying the compile |
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1221 return; |
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1222 } |
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1223 |
0 | 1224 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1225 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1226 if (TraceClassInitialization) { | |
1227 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1228 this_oop->name()->print_value(); | |
1229 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1230 } | |
1231 if (h_method() != NULL) { | |
1232 JavaCallArguments args; // No arguments | |
1233 JavaValue result(T_VOID); | |
1234 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1235 } | |
1236 } | |
1237 | |
1238 | |
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1239 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1240 InterpreterOopMap* entry_for) { |
1241 // Dirty read, then double-check under a lock. | |
1242 if (_oop_map_cache == NULL) { | |
1243 // Otherwise, allocate a new one. | |
1244 MutexLocker x(OopMapCacheAlloc_lock); | |
1245 // First time use. Allocate a cache in C heap | |
1246 if (_oop_map_cache == NULL) { | |
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1247 // Release stores from OopMapCache constructor before assignment |
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1248 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1249 // required memory barrier only because of the volatile |
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1250 // qualifier of _oop_map_cache. |
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1251 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1252 } |
1253 } | |
1254 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1255 _oop_map_cache->lookup(method, bci, entry_for); | |
1256 } | |
1257 | |
1258 | |
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1259 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1260 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1261 Symbol* f_name = fs.name(); |
1262 Symbol* f_sig = fs.signature(); | |
0 | 1263 if (f_name == name && f_sig == sig) { |
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1264 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1265 return true; |
1266 } | |
1267 } | |
1268 return false; | |
1269 } | |
1270 | |
1271 | |
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1272 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1273 const int n = local_interfaces()->length(); |
1274 for (int i = 0; i < n; i++) { | |
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1275 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1276 assert(intf1->is_interface(), "just checking type"); |
0 | 1277 // search for field in current interface |
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1278 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1279 assert(fd->is_static(), "interface field must be static"); |
1280 return intf1; | |
1281 } | |
1282 // search for field in direct superinterfaces | |
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1283 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1284 if (intf2 != NULL) return intf2; |
1285 } | |
1286 // otherwise field lookup fails | |
1287 return NULL; | |
1288 } | |
1289 | |
1290 | |
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1291 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1292 // search order according to newest JVM spec (5.4.3.2, p.167). |
1293 // 1) search for field in current klass | |
1294 if (find_local_field(name, sig, fd)) { | |
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1295 return const_cast<InstanceKlass*>(this); |
0 | 1296 } |
1297 // 2) search for field recursively in direct superinterfaces | |
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1298 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1299 if (intf != NULL) return intf; |
1300 } | |
1301 // 3) apply field lookup recursively if superclass exists | |
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1302 { Klass* supr = super(); |
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1303 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1304 } |
1305 // 4) otherwise field lookup fails | |
1306 return NULL; | |
1307 } | |
1308 | |
1309 | |
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1310 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1311 // search order according to newest JVM spec (5.4.3.2, p.167). |
1312 // 1) search for field in current klass | |
1313 if (find_local_field(name, sig, fd)) { | |
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1314 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1315 } |
1316 // 2) search for field recursively in direct superinterfaces | |
1317 if (is_static) { | |
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1318 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1319 if (intf != NULL) return intf; |
1320 } | |
1321 // 3) apply field lookup recursively if superclass exists | |
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1322 { Klass* supr = super(); |
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1323 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1324 } |
1325 // 4) otherwise field lookup fails | |
1326 return NULL; | |
1327 } | |
1328 | |
1329 | |
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1330 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1331 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1332 if (fs.offset() == offset) { |
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1333 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1334 if (fd->is_static() == is_static) return true; |
1335 } | |
1336 } | |
1337 return false; | |
1338 } | |
1339 | |
1340 | |
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1341 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1342 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1343 while (klass != NULL) { |
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1344 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1345 return true; |
1346 } | |
6983 | 1347 klass = klass->super(); |
0 | 1348 } |
1349 return false; | |
1350 } | |
1351 | |
1352 | |
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1353 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1354 int len = methods()->length(); |
1355 for (int index = 0; index < len; index++) { | |
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1356 Method* m = methods()->at(index); |
0 | 1357 assert(m->is_method(), "must be method"); |
1358 f(m); | |
1359 } | |
1360 } | |
1361 | |
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1362 |
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1363 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1364 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1365 if (fs.access_flags().is_static()) { | |
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1366 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1367 cl->do_field(&fd); |
1368 } | |
0 | 1369 } |
1370 } | |
1371 | |
1372 | |
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1373 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1374 instanceKlassHandle h_this(THREAD, this); |
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1375 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1376 } |
1377 | |
1378 | |
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1379 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1380 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1381 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1382 if (fs.access_flags().is_static()) { |
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1383 fieldDescriptor& fd = fs.field_descriptor(); |
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1384 f(&fd, mirror, CHECK); |
3938 | 1385 } |
0 | 1386 } |
1387 } | |
1388 | |
1389 | |
44
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1390 static int compare_fields_by_offset(int* a, int* b) { |
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1391 return a[0] - b[0]; |
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|
1392 } |
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|
1393 |
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1394 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1395 InstanceKlass* super = superklass(); |
0 | 1396 if (super != NULL) { |
1397 super->do_nonstatic_fields(cl); | |
1398 } | |
44
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1399 fieldDescriptor fd; |
3938 | 1400 int length = java_fields_count(); |
44
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1401 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1402 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1403 int j = 0; |
3938 | 1404 for (int i = 0; i < length; i += 1) { |
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1405 fd.reinitialize(this, i); |
44
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1406 if (!fd.is_static()) { |
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1407 fields_sorted[j + 0] = fd.offset(); |
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1408 fields_sorted[j + 1] = i; |
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1409 j += 2; |
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1410 } |
0 | 1411 } |
44
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1412 if (j > 0) { |
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1413 length = j; |
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1414 // _sort_Fn is defined in growableArray.hpp. |
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1415 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1416 for (int i = 0; i < length; i += 2) { |
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1417 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1418 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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|
1419 cl->do_field(&fd); |
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|
1420 } |
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|
1421 } |
6197 | 1422 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1423 } |
1424 | |
1425 | |
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1426 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1427 if (array_klasses() != NULL) |
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1428 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1429 } |
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1430 |
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1431 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1432 if (array_klasses() != NULL) |
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1433 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1434 } |
1435 | |
1436 #ifdef ASSERT | |
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1437 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1438 int len = methods->length(); |
1439 for (int index = 0; index < len; index++) { | |
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1440 Method* m = methods->at(index); |
0 | 1441 assert(m->is_method(), "must be method"); |
1442 if (m->signature() == signature && m->name() == name) { | |
1443 return index; | |
1444 } | |
1445 } | |
1446 return -1; | |
1447 } | |
1448 #endif | |
1449 | |
6934 | 1450 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1451 int len = methods->length(); |
1452 // methods are sorted, so do binary search | |
1453 int l = 0; | |
1454 int h = len - 1; | |
1455 while (l <= h) { | |
1456 int mid = (l + h) >> 1; | |
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1457 Method* m = methods->at(mid); |
0 | 1458 assert(m->is_method(), "must be method"); |
1459 int res = m->name()->fast_compare(name); | |
1460 if (res == 0) { | |
6934 | 1461 return mid; |
0 | 1462 } else if (res < 0) { |
1463 l = mid + 1; | |
1464 } else { | |
1465 h = mid - 1; | |
1466 } | |
1467 } | |
6934 | 1468 return -1; |
1469 } | |
1470 | |
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1471 // find_method looks up the name/signature in the local methods array |
6934 | 1472 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1473 return find_method_impl(name, signature, false); |
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1474 } |
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1475 |
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1476 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
20785 | 1477 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass, false); |
6934 | 1478 } |
1479 | |
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1480 // find_instance_method looks up the name/signature in the local methods array |
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1481 // and skips over static methods |
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|
1482 Method* InstanceKlass::find_instance_method( |
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|
1483 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
20785 | 1484 Method* meth = InstanceKlass::find_method_impl(methods, name, signature, false, true); |
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1485 return meth; |
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|
1486 } |
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|
1487 |
20785 | 1488 // find_instance_method looks up the name/signature in the local methods array |
1489 // and skips over static methods | |
1490 Method* InstanceKlass::find_instance_method(Symbol* name, Symbol* signature) { | |
1491 return InstanceKlass::find_instance_method(methods(), name, signature); | |
1492 } | |
1493 | |
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1494 // find_method looks up the name/signature in the local methods array |
6934 | 1495 Method* InstanceKlass::find_method( |
1496 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
20785 | 1497 return InstanceKlass::find_method_impl(methods, name, signature, false, false); |
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1498 } |
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1499 |
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1500 Method* InstanceKlass::find_method_impl( |
20785 | 1501 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1502 int hit = find_method_index(methods, name, signature, skipping_overpass, skipping_static); | |
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1503 return hit >= 0 ? methods->at(hit): NULL; |
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|
1504 } |
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|
1505 |
20785 | 1506 bool InstanceKlass::method_matches(Method* m, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1507 return (m->signature() == signature) && | |
1508 (!skipping_overpass || !m->is_overpass()) && | |
1509 (!skipping_static || !m->is_static()); | |
1510 } | |
1511 | |
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1512 // Used directly for default_methods to find the index into the |
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|
1513 // default_vtable_indices, and indirectly by find_method |
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|
1514 // find_method_index looks in the local methods array to return the index |
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1515 // of the matching name/signature. If, overpass methods are being ignored, |
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1516 // the search continues to find a potential non-overpass match. This capability |
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|
1517 // is important during method resolution to prefer a static method, for example, |
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|
1518 // over an overpass method. |
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1519 int InstanceKlass::find_method_index( |
20785 | 1520 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
6934 | 1521 int hit = binary_search(methods, name); |
1522 if (hit != -1) { | |
1523 Method* m = methods->at(hit); | |
20785 | 1524 |
6934 | 1525 // Do linear search to find matching signature. First, quick check |
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|
1526 // for common case, ignoring overpasses if requested. |
20785 | 1527 if (method_matches(m, signature, skipping_overpass, skipping_static)) return hit; |
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1528 |
6934 | 1529 // search downwards through overloaded methods |
1530 int i; | |
1531 for (i = hit - 1; i >= 0; --i) { | |
1532 Method* m = methods->at(i); | |
1533 assert(m->is_method(), "must be method"); | |
1534 if (m->name() != name) break; | |
20785 | 1535 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1536 } |
1537 // search upwards | |
1538 for (i = hit + 1; i < methods->length(); ++i) { | |
1539 Method* m = methods->at(i); | |
1540 assert(m->is_method(), "must be method"); | |
1541 if (m->name() != name) break; | |
20785 | 1542 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1543 } |
1544 // not found | |
0 | 1545 #ifdef ASSERT |
20785 | 1546 int index = skipping_overpass || skipping_static ? -1 : linear_search(methods, name, signature); |
6934 | 1547 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1548 #endif |
6934 | 1549 } |
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1550 return -1; |
0 | 1551 } |
6934 | 1552 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1553 return find_method_by_name(methods(), name, end); | |
1554 } | |
1555 | |
1556 int InstanceKlass::find_method_by_name( | |
1557 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1558 assert(end_ptr != NULL, "just checking"); | |
1559 int start = binary_search(methods, name); | |
1560 int end = start + 1; | |
1561 if (start != -1) { | |
1562 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1563 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1564 *end_ptr = end; | |
1565 return start; | |
1566 } | |
1567 return -1; | |
1568 } | |
1569 | |
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|
1570 // uncached_lookup_method searches both the local class methods array and all |
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1571 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1572 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1573 MethodLookupMode lookup_mode = mode; |
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1574 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1575 while (klass != NULL) { |
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|
1576 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1577 if (method != NULL) { |
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|
1578 return method; |
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1579 } |
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1580 klass = InstanceKlass::cast(klass)->super(); |
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|
1581 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1582 } |
1583 return NULL; | |
1584 } | |
1585 | |
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1586 #ifdef ASSERT |
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1587 // search through class hierarchy and return true if this class or |
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|
1588 // one of the superclasses was redefined |
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|
1589 bool InstanceKlass::has_redefined_this_or_super() const { |
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|
1590 const InstanceKlass* klass = this; |
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|
1591 while (klass != NULL) { |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
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|
1592 if (klass->has_been_redefined()) { |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
changeset
|
1593 return true; |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
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|
1594 } |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
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23175
diff
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|
1595 klass = InstanceKlass::cast(klass->super()); |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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23175
diff
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|
1596 } |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
changeset
|
1597 return false; |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
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23175
diff
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|
1598 } |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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diff
changeset
|
1599 #endif |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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23175
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|
1600 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1601 // lookup a method in the default methods list then in all transitive interfaces |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
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|
1602 // Do NOT return private or static methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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12811
diff
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|
1603 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
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|
1604 Symbol* signature) const { |
12828
d25557d03ec0
8026185: nsk/jvmit/GetMethodDeclaringClass/declcls001 failed
acorn
parents:
12823
diff
changeset
|
1605 Method* m = NULL; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1606 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
1607 m = find_method(default_methods(), name, signature); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
1608 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1609 // Look up interfaces |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
changeset
|
1610 if (m == NULL) { |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
parents:
17883
diff
changeset
|
1611 m = lookup_method_in_all_interfaces(name, signature, normal); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
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|
1612 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1613 return m; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1614 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
1615 |
0 | 1616 // lookup a method in all the interfaces that this class implements |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
changeset
|
1617 // 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.
acorn
parents:
12316
diff
changeset
|
1618 // They should only be found in the initial InterfaceMethodRef |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
1619 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13438
diff
changeset
|
1620 Symbol* signature, |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
parents:
17883
diff
changeset
|
1621 MethodLookupMode mode) const { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
1622 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1623 int num_ifs = all_ifs->length(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1624 InstanceKlass *ik = NULL; |
0 | 1625 for (int i = 0; i < num_ifs; i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1626 ik = InstanceKlass::cast(all_ifs->at(i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1627 Method* m = ik->lookup_method(name, signature); |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13438
diff
changeset
|
1628 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.
lfoltan
parents:
17883
diff
changeset
|
1629 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1630 return m; |
1631 } | |
1632 } | |
1633 return NULL; | |
1634 } | |
1635 | |
1636 /* jni_id_for_impl for jfieldIds only */ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1637 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1638 MutexLocker ml(JfieldIdCreation_lock); |
1639 // Retry lookup after we got the lock | |
1640 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1641 if (probe == NULL) { | |
1642 // Slow case, allocate new static field identifier | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1643 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1644 this_oop->set_jni_ids(probe); |
1645 } | |
1646 return probe; | |
1647 } | |
1648 | |
1649 | |
1650 /* jni_id_for for jfieldIds only */ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1651 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1652 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1653 if (probe == NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1654 probe = jni_id_for_impl(this, offset); |
0 | 1655 } |
1656 return probe; | |
1657 } | |
1658 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1659 u2 InstanceKlass::enclosing_method_data(int offset) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1660 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
|
1661 if (inner_class_list == NULL) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1662 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1663 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1664 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
changeset
|
1665 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
changeset
|
1666 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1667 } else { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1668 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
|
1669 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1670 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
|
1671 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1672 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1673 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1674 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
changeset
|
1675 u2 method_index) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1676 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
|
1677 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
changeset
|
1678 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
changeset
|
1679 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
|
1680 int index = length - enclosing_method_attribute_size; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1681 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
|
1682 index + enclosing_method_class_index_offset, class_index); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1683 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
|
1684 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
|
1685 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1686 } |
0 | 1687 |
1688 // Lookup or create a jmethodID. | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1689 // 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
changeset
|
1690 // 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
changeset
|
1691 // and/or other cache consistency problems. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1692 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1693 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1694 size_t idnum = (size_t)method_h->method_idnum(); |
1695 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1696 size_t length = 0; | |
1697 jmethodID id = NULL; | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1698 |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1699 // 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
changeset
|
1700 // 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
|
1701 // transitions from NULL to non-NULL which is safe because we use |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1702 // release_set_methods_jmethod_ids() to advertise the new cache. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1703 // A partially constructed cache should never be seen by a racing |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1704 // thread. We also use release_store_ptr() to save a new jmethodID |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1705 // in the cache so a partially constructed jmethodID should never be |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1706 // 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
|
1707 // 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
|
1708 // creation of the cache itself requires no leaks so a lock is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1709 // generally acquired in those two cases. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1710 // |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1711 // If the RedefineClasses() API has been used, then this cache can |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1712 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1713 // Cache creation requires no leaks and we require safety between all |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1714 // 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
parents:
974
diff
changeset
|
1715 // acquired when the RedefineClasses() API has been used. |
0 | 1716 |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
changeset
|
1717 if (jmeths != NULL) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1718 // the cache already exists |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1719 if (!ik_h->idnum_can_increment()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1720 // 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
dcubed
parents:
974
diff
changeset
|
1721 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
changeset
|
1722 } else { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
changeset
|
1723 // cache can grow so we have to be more careful |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1724 if (Threads::number_of_threads() == 0 || |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
changeset
|
1725 SafepointSynchronize::is_at_safepoint()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1726 // we're single threaded or at a safepoint - no locking needed |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1727 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
changeset
|
1728 } else { |
74a5db69c1fe
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dcubed
parents:
974
diff
changeset
|
1729 MutexLocker ml(JmethodIdCreation_lock); |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1730 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
changeset
|
1731 } |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1732 } |
74a5db69c1fe
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974
diff
changeset
|
1733 } |
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1734 // implied else: |
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1735 // we need to allocate a cache so default length and id values are good |
0 | 1736 |
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1737 if (jmeths == NULL || // no cache yet |
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1738 length <= idnum || // cache is too short |
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1739 id == NULL) { // cache doesn't contain entry |
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1740 |
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1741 // This function can be called by the VMThread so we have to do all |
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1742 // things that might block on a safepoint before grabbing the lock. |
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1743 // Otherwise, we can deadlock with the VMThread or have a cache |
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1744 // consistency issue. These vars keep track of what we might have |
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1745 // to free after the lock is dropped. |
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1746 jmethodID to_dealloc_id = NULL; |
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1747 jmethodID* to_dealloc_jmeths = NULL; |
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1748 |
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1749 // may not allocate new_jmeths or use it if we allocate it |
0 | 1750 jmethodID* new_jmeths = NULL; |
1751 if (length <= idnum) { | |
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1752 // allocate a new cache that might be used |
0 | 1753 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1754 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1755 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1756 // cache size is stored in element[0], other elements offset by one |
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1757 new_jmeths[0] = (jmethodID)size; |
0 | 1758 } |
1759 | |
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1760 // allocate a new jmethodID that might be used |
0 | 1761 jmethodID new_id = NULL; |
1762 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1763 // The method passed in is old (but not obsolete), we need to use the current version | |
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1764 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1765 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1766 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1767 } else { |
1768 // It is the current version of the method or an obsolete method, | |
1769 // use the version passed in | |
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1770 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1771 } |
1772 | |
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1773 if (Threads::number_of_threads() == 0 || |
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1774 SafepointSynchronize::is_at_safepoint()) { |
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1775 // we're single threaded or at a safepoint - no locking needed |
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1776 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1777 &to_dealloc_id, &to_dealloc_jmeths); |
49
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1778 } else { |
0 | 1779 MutexLocker ml(JmethodIdCreation_lock); |
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1780 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1781 &to_dealloc_id, &to_dealloc_jmeths); |
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1782 } |
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1783 |
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1784 // The lock has been dropped so we can free resources. |
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1785 // Free up either the old cache or the new cache if we allocated one. |
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1786 if (to_dealloc_jmeths != NULL) { |
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1787 FreeHeap(to_dealloc_jmeths); |
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1788 } |
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1789 // free up the new ID since it wasn't needed |
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1790 if (to_dealloc_id != NULL) { |
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1791 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1792 } |
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1793 } |
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1794 return id; |
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1795 } |
0 | 1796 |
49
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1797 |
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1798 // Common code to fetch the jmethodID from the cache or update the |
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1799 // cache with the new jmethodID. This function should never do anything |
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1800 // that causes the caller to go to a safepoint or we can deadlock with |
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1801 // the VMThread or have cache consistency issues. |
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1802 // |
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1803 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1804 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1805 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1806 jmethodID** to_dealloc_jmeths_p) { |
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1807 assert(new_id != NULL, "sanity check"); |
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1808 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1809 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1810 assert(Threads::number_of_threads() == 0 || |
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1811 SafepointSynchronize::is_at_safepoint() || |
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1812 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1813 |
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1814 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1815 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1816 jmethodID id = NULL; |
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1817 size_t length = 0; |
0 | 1818 |
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1819 if (jmeths == NULL || // no cache yet |
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1820 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1821 if (jmeths != NULL) { |
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1822 // copy any existing entries from the old cache |
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1823 for (size_t index = 0; index < length; index++) { |
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1824 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1825 } |
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1826 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1827 } |
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1828 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1829 } else { |
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1830 // fetch jmethodID (if any) from the existing cache |
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1831 id = jmeths[idnum+1]; |
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1832 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1833 } |
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1834 if (id == NULL) { |
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1835 // No matching jmethodID in the existing cache or we have a new |
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1836 // cache or we just grew the cache. This cache write is done here |
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1837 // by the first thread to win the foot race because a jmethodID |
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1838 // needs to be unique once it is generally available. |
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1839 id = new_id; |
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1840 |
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1841 // The jmethodID cache can be read while unlocked so we have to |
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1842 // make sure the new jmethodID is complete before installing it |
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1843 // in the cache. |
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1844 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1845 } else { |
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1846 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1847 } |
1848 return id; | |
1849 } | |
1850 | |
1851 | |
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1852 // Common code to get the jmethodID cache length and the jmethodID |
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1853 // value at index idnum if there is one. |
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1854 // |
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1855 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1856 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1857 assert(cache != NULL, "sanity check"); |
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1858 assert(length_p != NULL, "sanity check"); |
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1859 assert(id_p != NULL, "sanity check"); |
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1860 |
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1861 // cache size is stored in element[0], other elements offset by one |
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1862 *length_p = (size_t)cache[0]; |
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1863 if (*length_p <= idnum) { // cache is too short |
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1864 *id_p = NULL; |
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1865 } else { |
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1866 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1867 } |
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1868 } |
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1869 |
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1870 |
0 | 1871 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1872 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1873 size_t idnum = (size_t)method->method_idnum(); |
1874 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1875 size_t length; // length assigned as debugging crumb | |
1876 jmethodID id = NULL; | |
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1877 if (jmeths != NULL && // If there is a cache |
0 | 1878 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1879 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1880 } | |
1881 return id; | |
1882 } | |
1883 | |
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1884 int nmethodBucket::decrement() { |
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1885 return Atomic::add(-1, (volatile int *)&_count); |
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1886 } |
0 | 1887 |
1888 // | |
1889 // Walk the list of dependent nmethods searching for nmethods which | |
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1890 // are dependent on the changes that were passed in and mark them for |
0 | 1891 // deoptimization. Returns the number of nmethods found. |
1892 // | |
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1893 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1894 assert_locked_or_safepoint(CodeCache_lock); |
1895 int found = 0; | |
1896 nmethodBucket* b = _dependencies; | |
1897 while (b != NULL) { | |
1898 nmethod* nm = b->get_nmethod(); | |
1899 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1900 // the dependency list may contain nmethods which aren't alive. | |
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1901 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1902 if (TraceDependencies) { |
1903 ResourceMark rm; | |
1904 tty->print_cr("Marked for deoptimization"); | |
1905 tty->print_cr(" context = %s", this->external_name()); | |
1906 changes.print(); | |
1907 nm->print(); | |
1908 nm->print_dependencies(); | |
1909 } | |
1910 nm->mark_for_deoptimization(); | |
1911 found++; | |
1912 } | |
1913 b = b->next(); | |
1914 } | |
1915 return found; | |
1916 } | |
1917 | |
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1918 void InstanceKlass::clean_dependent_nmethods() { |
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1919 assert_locked_or_safepoint(CodeCache_lock); |
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1920 |
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1921 if (has_unloaded_dependent()) { |
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1922 nmethodBucket* b = _dependencies; |
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1923 nmethodBucket* last = NULL; |
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1924 while (b != NULL) { |
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1925 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1926 |
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1927 nmethodBucket* next = b->next(); |
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1928 |
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1929 if (b->count() == 0) { |
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1930 if (last == NULL) { |
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1931 _dependencies = next; |
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1932 } else { |
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1933 last->set_next(next); |
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1934 } |
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1935 delete b; |
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1936 // last stays the same. |
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1937 } else { |
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1938 last = b; |
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1939 } |
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1940 |
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1941 b = next; |
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1942 } |
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1943 set_has_unloaded_dependent(false); |
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1944 } |
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1945 #ifdef ASSERT |
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1946 else { |
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1947 // Verification |
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1948 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1949 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1950 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1951 } |
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1952 } |
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1953 #endif |
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1954 } |
0 | 1955 |
1956 // | |
1957 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1958 // It's possible that an nmethod has multiple dependencies on this klass | |
1959 // so a count is kept for each bucket to guarantee that creation and | |
1960 // deletion of dependencies is consistent. | |
1961 // | |
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1962 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1963 assert_locked_or_safepoint(CodeCache_lock); |
1964 nmethodBucket* b = _dependencies; | |
1965 nmethodBucket* last = NULL; | |
1966 while (b != NULL) { | |
1967 if (nm == b->get_nmethod()) { | |
1968 b->increment(); | |
1969 return; | |
1970 } | |
1971 b = b->next(); | |
1972 } | |
1973 _dependencies = new nmethodBucket(nm, _dependencies); | |
1974 } | |
1975 | |
1976 | |
1977 // | |
1978 // Decrement count of the nmethod in the dependency list and remove | |
1979 // the bucket competely when the count goes to 0. This method must | |
1980 // find a corresponding bucket otherwise there's a bug in the | |
1981 // recording of dependecies. | |
1982 // | |
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1983 void InstanceKlass::remove_dependent_nmethod(nmethod* nm, bool delete_immediately) { |
0 | 1984 assert_locked_or_safepoint(CodeCache_lock); |
1985 nmethodBucket* b = _dependencies; | |
1986 nmethodBucket* last = NULL; | |
1987 while (b != NULL) { | |
1988 if (nm == b->get_nmethod()) { | |
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1989 int val = b->decrement(); |
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1990 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1991 if (val == 0) { |
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1992 if (delete_immediately) { |
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1993 if (last == NULL) { |
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1994 _dependencies = b->next(); |
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1995 } else { |
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1996 last->set_next(b->next()); |
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1997 } |
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1998 delete b; |
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1999 } else { |
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2000 // The deletion of this entry is deferred until a later, potentially parallel GC phase. |
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2001 set_has_unloaded_dependent(true); |
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2002 } |
0 | 2003 } |
2004 return; | |
2005 } | |
2006 last = b; | |
2007 b = b->next(); | |
2008 } | |
2009 #ifdef ASSERT | |
2010 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
2011 nm->print(); | |
2012 #endif // ASSERT | |
2013 ShouldNotReachHere(); | |
2014 } | |
2015 | |
2016 | |
2017 #ifndef PRODUCT | |
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2018 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 2019 nmethodBucket* b = _dependencies; |
2020 int idx = 0; | |
2021 while (b != NULL) { | |
2022 nmethod* nm = b->get_nmethod(); | |
2023 tty->print("[%d] count=%d { ", idx++, b->count()); | |
2024 if (!verbose) { | |
2025 nm->print_on(tty, "nmethod"); | |
2026 tty->print_cr(" } "); | |
2027 } else { | |
2028 nm->print(); | |
2029 nm->print_dependencies(); | |
2030 tty->print_cr("--- } "); | |
2031 } | |
2032 b = b->next(); | |
2033 } | |
2034 } | |
2035 | |
2036 | |
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2037 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 2038 nmethodBucket* b = _dependencies; |
2039 while (b != NULL) { | |
2040 if (nm == b->get_nmethod()) { | |
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2041 #ifdef ASSERT |
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2042 int count = b->count(); |
20279 | 2043 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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2044 #endif |
0 | 2045 return true; |
2046 } | |
2047 b = b->next(); | |
2048 } | |
2049 return false; | |
2050 } | |
2051 #endif //PRODUCT | |
2052 | |
2053 | |
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2054 // Garbage collection |
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2055 |
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2056 #ifdef ASSERT |
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2057 template <class T> void assert_is_in(T *p) { |
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2058 T heap_oop = oopDesc::load_heap_oop(p); |
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2059 if (!oopDesc::is_null(heap_oop)) { |
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2060 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2061 assert(Universe::heap()->is_in(o), "should be in heap"); |
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2062 } |
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2063 } |
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2064 template <class T> void assert_is_in_closed_subset(T *p) { |
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2065 T heap_oop = oopDesc::load_heap_oop(p); |
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2066 if (!oopDesc::is_null(heap_oop)) { |
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2067 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2068 assert(Universe::heap()->is_in_closed_subset(o), |
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2069 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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2070 } |
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2071 } |
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2072 template <class T> void assert_is_in_reserved(T *p) { |
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2073 T heap_oop = oopDesc::load_heap_oop(p); |
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2074 if (!oopDesc::is_null(heap_oop)) { |
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2075 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2076 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2077 } |
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2078 } |
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2079 template <class T> void assert_nothing(T *p) {} |
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2080 |
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2081 #else |
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2082 template <class T> void assert_is_in(T *p) {} |
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2083 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2084 template <class T> void assert_is_in_reserved(T *p) {} |
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2085 template <class T> void assert_nothing(T *p) {} |
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2086 #endif // ASSERT |
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2087 |
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2088 // |
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2089 // Macros that iterate over areas of oops which are specialized on type of |
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2090 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2091 // |
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2092 // Parameters are: |
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2093 // T - type of oop to point to (either oop or narrowOop) |
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2094 // start_p - starting pointer for region to iterate over |
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2095 // count - number of oops or narrowOops to iterate over |
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2096 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2097 // makes it more efficient to put in a macro rather than making |
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2098 // it a template function) |
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2099 // assert_fn - assert function which is template function because performance |
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2100 // doesn't matter when enabled. |
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2101 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2102 T, start_p, count, do_oop, \ |
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2103 assert_fn) \ |
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2104 { \ |
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2105 T* p = (T*)(start_p); \ |
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2106 T* const end = p + (count); \ |
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2107 while (p < end) { \ |
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2108 (assert_fn)(p); \ |
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2109 do_oop; \ |
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2110 ++p; \ |
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2111 } \ |
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2112 } |
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2113 |
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2114 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2115 T, start_p, count, do_oop, \ |
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2116 assert_fn) \ |
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2117 { \ |
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2118 T* const start = (T*)(start_p); \ |
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2119 T* p = start + (count); \ |
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2120 while (start < p) { \ |
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2121 --p; \ |
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2122 (assert_fn)(p); \ |
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2123 do_oop; \ |
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2124 } \ |
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2125 } |
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2126 |
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2127 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2128 T, start_p, count, low, high, \ |
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2129 do_oop, assert_fn) \ |
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2130 { \ |
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2131 T* const l = (T*)(low); \ |
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2132 T* const h = (T*)(high); \ |
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2133 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2134 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2135 "bounded region must be properly aligned"); \ |
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2136 T* p = (T*)(start_p); \ |
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2137 T* end = p + (count); \ |
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2138 if (p < l) p = l; \ |
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2139 if (end > h) end = h; \ |
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2140 while (p < end) { \ |
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2141 (assert_fn)(p); \ |
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2142 do_oop; \ |
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2143 ++p; \ |
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2144 } \ |
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2145 } |
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2146 |
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2147 |
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2148 // The following macros call specialized macros, passing either oop or |
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2149 // narrowOop as the specialization type. These test the UseCompressedOops |
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2150 // flag. |
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2151 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2152 { \ |
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2153 /* Compute oopmap block range. The common case \ |
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2154 is nonstatic_oop_map_size == 1. */ \ |
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2155 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2156 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2157 if (UseCompressedOops) { \ |
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2158 while (map < end_map) { \ |
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2159 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2160 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2161 do_oop, assert_fn) \ |
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2162 ++map; \ |
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2163 } \ |
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2164 } else { \ |
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2165 while (map < end_map) { \ |
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2166 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2167 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2168 do_oop, assert_fn) \ |
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2169 ++map; \ |
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2170 } \ |
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2171 } \ |
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2172 } |
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2173 |
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2174 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2175 { \ |
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2176 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2177 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2178 if (UseCompressedOops) { \ |
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2179 while (start_map < map) { \ |
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2180 --map; \ |
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2181 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2182 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2183 do_oop, assert_fn) \ |
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2184 } \ |
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2185 } else { \ |
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2186 while (start_map < map) { \ |
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2187 --map; \ |
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2188 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2189 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2190 do_oop, assert_fn) \ |
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2191 } \ |
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2192 } \ |
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2193 } |
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2194 |
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2195 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2196 assert_fn) \ |
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2197 { \ |
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2198 /* Compute oopmap block range. The common case is \ |
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2199 nonstatic_oop_map_size == 1, so we accept the \ |
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2200 usually non-existent extra overhead of examining \ |
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2201 all the maps. */ \ |
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2202 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2203 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
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2204 if (UseCompressedOops) { \ |
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2205 while (map < end_map) { \ |
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2206 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2207 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2208 low, high, \ |
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2209 do_oop, assert_fn) \ |
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2210 ++map; \ |
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2211 } \ |
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2212 } else { \ |
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2213 while (map < end_map) { \ |
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2214 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2215 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2216 low, high, \ |
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2217 do_oop, assert_fn) \ |
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2218 ++map; \ |
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2219 } \ |
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2220 } \ |
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2221 } |
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2222 |
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2223 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2224 assert(obj != NULL, "can't follow the content of NULL object"); |
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2225 MarkSweep::follow_klass(obj->klass()); |
113
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2226 InstanceKlass_OOP_MAP_ITERATE( \ |
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2227 obj, \ |
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2228 MarkSweep::mark_and_push(p), \ |
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2229 assert_is_in_closed_subset) |
0 | 2230 } |
2231 | |
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2232 #if INCLUDE_ALL_GCS |
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2233 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2234 oop obj) { |
113
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2235 assert(obj != NULL, "can't follow the content of NULL object"); |
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2236 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2237 // Only mark the header and let the scan of the meta-data mark |
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2238 // everything else. |
113
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2239 InstanceKlass_OOP_MAP_ITERATE( \ |
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2240 obj, \ |
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2241 PSParallelCompact::mark_and_push(cm, p), \ |
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2242 assert_is_in) |
0 | 2243 } |
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2244 #endif // INCLUDE_ALL_GCS |
0 | 2245 |
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2246 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2247 // applied to the klass ptr in the object header. |
2248 | |
342
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2249 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2250 \ |
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2251 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2252 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2253 /* header */ \ |
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2254 if_do_metadata_checked(closure, nv_suffix) { \ |
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2255 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2256 } \ |
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2257 InstanceKlass_OOP_MAP_ITERATE( \ |
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2258 obj, \ |
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2259 SpecializationStats:: \ |
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2260 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2261 (closure)->do_oop##nv_suffix(p), \ |
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2262 assert_is_in_closed_subset) \ |
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2263 return size_helper(); \ |
0 | 2264 } |
2265 | |
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2266 #if INCLUDE_ALL_GCS |
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2267 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2268 \ |
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2269 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2270 OopClosureType* closure) { \ |
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2271 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2272 \ |
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2273 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2274 \ |
342
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2275 /* instance variables */ \ |
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2276 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2277 obj, \ |
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2278 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2279 (closure)->do_oop##nv_suffix(p), \ |
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2280 assert_is_in_closed_subset) \ |
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2281 return size_helper(); \ |
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2282 } |
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2283 #endif // INCLUDE_ALL_GCS |
342
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2284 |
113
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2285 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2286 \ |
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2287 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2288 OopClosureType* closure, \ |
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2289 MemRegion mr) { \ |
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2290 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2291 if_do_metadata_checked(closure, nv_suffix) { \ |
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2292 if (mr.contains(obj)) { \ |
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2293 closure->do_klass##nv_suffix(obj->klass()); \ |
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2294 } \ |
113
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2295 } \ |
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2296 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2297 obj, mr.start(), mr.end(), \ |
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2298 (closure)->do_oop##nv_suffix(p), \ |
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2299 assert_is_in_closed_subset) \ |
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2300 return size_helper(); \ |
0 | 2301 } |
2302 | |
2303 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2304 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2305 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2306 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2307 #if INCLUDE_ALL_GCS |
342
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2308 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2309 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2310 #endif // INCLUDE_ALL_GCS |
0 | 2311 |
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2312 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2313 int size = size_helper(); |
113
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2314 InstanceKlass_OOP_MAP_ITERATE( \ |
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2315 obj, \ |
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2316 MarkSweep::adjust_pointer(p), \ |
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2317 assert_is_in) |
0 | 2318 return size; |
2319 } | |
2320 | |
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2321 #if INCLUDE_ALL_GCS |
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2322 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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2323 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2324 obj, \ |
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2325 if (PSScavenge::should_scavenge(p)) { \ |
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2326 pm->claim_or_forward_depth(p); \ |
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2327 }, \ |
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2328 assert_nothing ) |
0 | 2329 } |
2330 | |
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2331 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2332 int size = size_helper(); |
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2333 InstanceKlass_OOP_MAP_ITERATE( \ |
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2334 obj, \ |
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2335 PSParallelCompact::adjust_pointer(p), \ |
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2336 assert_is_in) |
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2337 return size; |
0 | 2338 } |
2339 | |
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2340 #endif // INCLUDE_ALL_GCS |
0 | 2341 |
23463
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2342 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
|
2343 clean_implementors_list(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2344 clean_method_data(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2345 |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2346 clean_dependent_nmethods(); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2347 } |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2348 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2349 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
|
2350 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
|
2351 if (is_interface()) { |
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2352 if (ClassUnloading) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2353 Klass* impl = implementor(); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2354 if (impl != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2355 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
|
2356 // remove this guy |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2357 Klass** klass = adr_implementor(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2358 assert(klass != NULL, "null klass"); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2359 if (klass != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2360 *klass = NULL; |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2361 } |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2362 } |
0 | 2363 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2364 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2365 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2366 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2367 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2368 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2369 for (int m = 0; m < methods()->length(); m++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2370 MethodData* mdo = methods()->at(m)->method_data(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2371 if (mdo != NULL) { |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
17674
diff
changeset
|
2372 mdo->clean_method_data(is_alive); |
0 | 2373 } |
2374 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2375 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2377 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2378 static void remove_unshareable_in_class(Klass* k) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2379 // remove klass's unshareable info |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2380 k->remove_unshareable_info(); |
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 void InstanceKlass::remove_unshareable_info() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2384 Klass::remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2385 // Unlink the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2386 if (is_linked()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2387 unlink_class(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2388 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2389 init_implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2390 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2391 constants()->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2392 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2393 for (int i = 0; i < methods()->length(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2394 Method* m = methods()->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2395 m->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2396 } |
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 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2399 array_klasses_do(remove_unshareable_in_class); |
0 | 2400 } |
2401 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2402 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2403 // Array classes have null protection domain. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2404 // --> see ArrayKlass::complete_create_array_klass() |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2405 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2406 } |
2407 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2408 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
|
2409 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
|
2410 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2411 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2412 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2413 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2414 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2415 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2416 m->restore_unshareable_info(CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2417 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2418 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2419 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2420 // 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
|
2421 // 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
|
2422 // 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
|
2423 // 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
|
2424 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2425 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2426 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2427 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2428 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2429 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2430 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2431 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2432 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
|
2433 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2434 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2435 // 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
|
2436 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2437 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2438 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2439 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2440 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2441 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2442 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2443 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2444 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2445 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2446 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2447 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2448 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2449 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2450 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2451 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2452 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2453 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2454 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2455 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2456 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2457 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2458 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2459 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2460 set_in_error_state(); |
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 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2465 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2466 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2467 static void clear_all_breakpoints(Method* m) { |
0 | 2468 m->clear_all_breakpoints(); |
2469 } | |
2470 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2471 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2472 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2473 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2474 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2475 JvmtiExport::post_class_unload(ik); |
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 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2478 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2479 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2480 } |
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 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
|
2483 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2484 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2485 ik->constants()->release_C_heap_structures(); |
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 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2488 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2489 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2490 // 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
|
2491 // 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
|
2492 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2493 |
0 | 2494 // Deallocate oop map cache |
2495 if (_oop_map_cache != NULL) { | |
2496 delete _oop_map_cache; | |
2497 _oop_map_cache = NULL; | |
2498 } | |
2499 | |
2500 // Deallocate JNI identifiers for jfieldIDs | |
2501 JNIid::deallocate(jni_ids()); | |
2502 set_jni_ids(NULL); | |
2503 | |
2504 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2505 if (jmeths != (jmethodID*)NULL) { | |
2506 release_set_methods_jmethod_ids(NULL); | |
2507 FreeHeap(jmeths); | |
2508 } | |
2509 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2510 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2511 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2512 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
|
2513 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
|
2514 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2515 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2516 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2517 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2518 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2519 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2520 |
0 | 2521 // release dependencies |
2522 nmethodBucket* b = _dependencies; | |
2523 _dependencies = NULL; | |
2524 while (b != NULL) { | |
2525 nmethodBucket* next = b->next(); | |
2526 delete b; | |
2527 b = next; | |
2528 } | |
2529 | |
2530 // Deallocate breakpoint records | |
2531 if (breakpoints() != 0x0) { | |
2532 methods_do(clear_all_breakpoints); | |
2533 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2534 } | |
2535 | |
2536 // deallocate information about previous versions | |
2537 if (_previous_versions != NULL) { | |
2538 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2539 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2540 delete pv_node; | |
2541 } | |
2542 delete _previous_versions; | |
2543 _previous_versions = NULL; | |
2544 } | |
2545 | |
2546 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2547 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2548 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2549 _cached_class_file = NULL; |
0 | 2550 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2551 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2552 // 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
|
2553 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2554 // 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
|
2555 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2556 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
|
2557 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
|
2558 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2559 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2560 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2561 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2562 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2563 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
|
2564 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2565 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2566 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2567 // 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
|
2568 // 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
|
2569 // 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
|
2570 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2571 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2572 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
|
2573 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2574 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2575 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2576 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2577 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2578 } |
0 | 2579 } |
2580 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2581 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2582 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
|
2583 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2584 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2585 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2586 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2587 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2588 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2589 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2590 // 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
|
2591 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2592 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2593 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
|
2594 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2595 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2596 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2597 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2598 // Get the internal name as a c string |
0 | 2599 const char* src = (const char*) (name()->as_C_string()); |
2600 const int src_length = (int)strlen(src); | |
12995
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 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
|
2603 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2604 // Add L as type indicator |
0 | 2605 int dest_index = 0; |
2606 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2607 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2608 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2609 for (int src_index = 0; src_index < src_length; ) { |
0 | 2610 dest[dest_index++] = src[src_index++]; |
2611 } | |
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 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2614 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2615 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2616 } |
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 // Add the semicolon and the NULL |
0 | 2619 dest[dest_index++] = ';'; |
2620 dest[dest_index] = '\0'; | |
2621 return dest; | |
2622 } | |
2623 | |
2624 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2625 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2626 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2627 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2628 Symbol* classname1 = class1->name(); |
2629 | |
2630 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2631 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2632 } |
2633 oop classloader2; | |
6983 | 2634 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2635 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2636 } else { |
6983 | 2637 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2638 classloader2 = NULL; |
2639 } | |
6983 | 2640 Symbol* classname2 = class2->name(); |
0 | 2641 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2642 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2643 classloader2, classname2); |
2644 } | |
2645 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2646 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
|
2647 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2648 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2649 Symbol* classname1 = class1->name(); |
0 | 2650 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2651 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2652 classloader2, classname2); |
2653 } | |
2654 | |
2655 // return true if two classes are in the same package, classloader | |
2656 // 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
|
2657 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2658 oop class_loader2, Symbol* class_name2) { |
0 | 2659 if (class_loader1 != class_loader2) { |
2660 return false; | |
665
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2661 } else if (class_name1 == class_name2) { |
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2662 return true; // skip painful bytewise comparison |
0 | 2663 } else { |
2664 ResourceMark rm; | |
2665 | |
2177
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diff
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|
2666 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2667 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2668 // Otherwise, we just compare jbyte values between the strings. | |
2177
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diff
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|
2669 const jbyte *name1 = class_name1->base(); |
3582bf76420e
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diff
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|
2670 const jbyte *name2 = class_name2->base(); |
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diff
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|
2671 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2672 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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diff
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|
2673 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2674 |
2675 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2676 // One of the two doesn't have a package. Only return true | |
2677 // if the other one also doesn't have a package. | |
2678 return last_slash1 == last_slash2; | |
2679 } else { | |
2680 // Skip over '['s | |
2681 if (*name1 == '[') { | |
2682 do { | |
2683 name1++; | |
2684 } while (*name1 == '['); | |
2685 if (*name1 != 'L') { | |
2686 // Something is terribly wrong. Shouldn't be here. | |
2687 return false; | |
2688 } | |
2689 } | |
2690 if (*name2 == '[') { | |
2691 do { | |
2692 name2++; | |
2693 } while (*name2 == '['); | |
2694 if (*name2 != 'L') { | |
2695 // Something is terribly wrong. Shouldn't be here. | |
2696 return false; | |
2697 } | |
2698 } | |
2699 | |
2700 // Check that package part is identical | |
2701 int length1 = last_slash1 - name1; | |
2702 int length2 = last_slash2 - name2; | |
2703 | |
2704 return UTF8::equal(name1, length1, name2, length2); | |
2705 } | |
2706 } | |
2707 } | |
2708 | |
652
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|
2709 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
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|
2710 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
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|
2711 // Assumes name-signature match |
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2712 // "this" is InstanceKlass of super_method which must exist |
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2713 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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2714 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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|
2715 // Private methods can not be overridden |
4aaa9f5e02a8
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|
2716 if (super_method->is_private()) { |
4aaa9f5e02a8
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|
2717 return false; |
4aaa9f5e02a8
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acorn
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diff
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|
2718 } |
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diff
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|
2719 // If super method is accessible, then override |
4aaa9f5e02a8
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|
2720 if ((super_method->is_protected()) || |
4aaa9f5e02a8
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parents:
605
diff
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|
2721 (super_method->is_public())) { |
4aaa9f5e02a8
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diff
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|
2722 return true; |
4aaa9f5e02a8
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acorn
parents:
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diff
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|
2723 } |
4aaa9f5e02a8
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acorn
parents:
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diff
changeset
|
2724 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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diff
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|
2725 assert(super_method->is_package_private(), "must be package private"); |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2726 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
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4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
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|
2727 } |
0 | 2728 |
665
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2729 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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|
2730 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
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|
2731 Symbol*& simple_name_result, TRAPS) { |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2732 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2733 } |
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6814659: separable cleanups and subroutines for 6655638
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parents:
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diff
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|
2734 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2735 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2736 // tell if two classes have the same enclosing class (at package level) |
6725
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|
2737 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
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|
2738 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2739 if (class2_oop == class1()) return true; |
6983 | 2740 if (!class2_oop->oop_is_instance()) return false; |
665
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2741 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2742 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2743 // must be in same package before we try anything else |
c89f86385056
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|
2744 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2745 return false; |
c89f86385056
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jrose
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diff
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|
2746 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2747 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2748 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2749 instanceKlassHandle outer1 = class1; |
c89f86385056
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jrose
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diff
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|
2750 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2751 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
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|
2752 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2753 // 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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|
2754 bool ignore_inner_is_member; |
6725
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coleenp
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|
2755 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
parents:
1039
diff
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|
2756 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2757 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2758 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2759 outer1 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2760 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2761 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2762 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2763 instanceKlassHandle outer2 = class2; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2764 for (;;) { |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
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|
2765 bool ignore_inner_is_member; |
6725
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|
2766 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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xlu
parents:
1039
diff
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|
2767 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2768 if (next == NULL) break; |
c89f86385056
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jrose
parents:
605
diff
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|
2769 // 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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|
2770 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2771 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2772 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2773 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2774 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2775 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2776 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2777 return false; |
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
parents:
605
diff
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|
2779 |
0 | 2780 |
6725
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6266
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|
2781 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2782 jint access = access_flags().as_int(); |
2783 | |
2784 // But check if it happens to be member class. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2785 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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|
2786 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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|
2787 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2788 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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|
2789 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2790 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2791 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2792 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2793 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2794 // since we are looking for the flags for our self. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2795 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2796 if ((ik->name() == inner_name)) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2797 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2798 access = iter.inner_access_flags(); |
f7c4174b33ba
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jiangli
parents:
4739
diff
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|
2799 break; |
0 | 2800 } |
2801 } | |
2802 // Remember to strip ACC_SUPER bit | |
2803 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2804 } | |
2805 | |
6725
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|
2806 jint InstanceKlass::jvmti_class_status() const { |
0 | 2807 jint result = 0; |
2808 | |
2809 if (is_linked()) { | |
2810 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2811 } | |
2812 | |
2813 if (is_initialized()) { | |
2814 assert(is_linked(), "Class status is not consistent"); | |
2815 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2816 } | |
2817 if (is_in_error_state()) { | |
2818 result |= JVMTI_CLASS_STATUS_ERROR; | |
2819 } | |
2820 return result; | |
2821 } | |
2822 | |
6725
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coleenp
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|
2823 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2824 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2825 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2826 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2827 / itableOffsetEntry::size(); | |
2828 | |
2829 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2830 // If the interface isn't implemented by the receiver class, |
0 | 2831 // the VM should throw IncompatibleClassChangeError. |
2832 if (cnt >= nof_interfaces) { | |
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coleenp
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|
2833 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2834 } |
2835 | |
6725
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coleenp
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|
2836 Klass* ik = ioe->interface_klass(); |
0 | 2837 if (ik == holder) break; |
2838 } | |
2839 | |
6725
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coleenp
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|
2840 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
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coleenp
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|
2841 Method* m = ime[index].method(); |
0 | 2842 if (m == NULL) { |
6725
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coleenp
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|
2843 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2844 } |
2845 return m; | |
2846 } | |
2847 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2848 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2849 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2850 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2851 // 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
|
2852 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2853 // 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
|
2854 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
|
2855 // 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
|
2856 if (default_methods() != NULL) { |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2857 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
|
2858 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
|
2859 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
|
2860 continue; // skip uninteresting entries |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2861 } |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2862 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
|
2863 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2864 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
|
2865 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2866 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
|
2867 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
|
2868 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2869 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
|
2870 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
|
2871 if (!(*trace_name_printed)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2872 // 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
|
2873 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
|
2874 external_name(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2875 old_method->method_holder()->external_name())); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2876 *trace_name_printed = true; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2877 } |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2878 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
|
2879 new_method->name()->as_C_string(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2880 new_method->signature()->as_C_string())); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2881 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2882 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2883 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2884 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2885 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2886 |
0 | 2887 // On-stack replacement stuff |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2888 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2889 // only one compilation can be active |
2890 NEEDS_CLEANUP | |
2891 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2892 OsrList_lock->lock_without_safepoint_check(); | |
2893 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
|
2894 n->set_osr_link(osr_nmethods_head()); |
0 | 2895 set_osr_nmethods_head(n); |
1783 | 2896 // Raise the highest osr level if necessary |
2897 if (TieredCompilation) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2898 Method* m = n->method(); |
1783 | 2899 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2900 } | |
0 | 2901 // Remember to unlock again |
2902 OsrList_lock->unlock(); | |
1783 | 2903 |
2904 // Get rid of the osr methods for the same bci that have lower levels. | |
2905 if (TieredCompilation) { | |
2906 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2907 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2908 if (inv != NULL && inv->is_in_use()) { | |
2909 inv->make_not_entrant(); | |
2910 } | |
2911 } | |
2912 } | |
0 | 2913 } |
2914 | |
2915 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2916 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2917 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2918 OsrList_lock->lock_without_safepoint_check(); | |
2919 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2920 nmethod* last = NULL; | |
2921 nmethod* cur = osr_nmethods_head(); | |
1783 | 2922 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
|
2923 Method* m = n->method(); |
0 | 2924 // Search for match |
2925 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2926 if (TieredCompilation && m == cur->method()) { |
1783 | 2927 // Find max level before n |
2928 max_level = MAX2(max_level, cur->comp_level()); | |
2929 } | |
0 | 2930 last = cur; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2931 cur = cur->osr_link(); |
0 | 2932 } |
1783 | 2933 nmethod* next = NULL; |
0 | 2934 if (cur == n) { |
1783 | 2935 next = cur->osr_link(); |
0 | 2936 if (last == NULL) { |
2937 // Remove first element | |
1783 | 2938 set_osr_nmethods_head(next); |
0 | 2939 } else { |
1783 | 2940 last->set_osr_link(next); |
0 | 2941 } |
2942 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2943 n->set_osr_link(NULL); |
1783 | 2944 if (TieredCompilation) { |
2945 cur = next; | |
2946 while (cur != NULL) { | |
2947 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2948 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2949 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
|
2950 } |
1783 | 2951 cur = cur->osr_link(); |
2952 } | |
2953 m->set_highest_osr_comp_level(max_level); | |
2954 } | |
0 | 2955 // Remember to unlock again |
2956 OsrList_lock->unlock(); | |
2957 } | |
2958 | |
20611
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2959 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
|
2960 // 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
|
2961 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
|
2962 nmethod* osr = osr_nmethods_head(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2963 int found = 0; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2964 while (osr != NULL) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2965 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
|
2966 if (osr->method() == m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2967 osr->mark_for_deoptimization(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2968 found++; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2969 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2970 osr = osr->osr_link(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2971 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2972 return found; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2973 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2974 |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2975 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2976 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2977 OsrList_lock->lock_without_safepoint_check(); | |
2978 nmethod* osr = osr_nmethods_head(); | |
1783 | 2979 nmethod* best = NULL; |
0 | 2980 while (osr != NULL) { |
2981 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2982 // There can be a time when a c1 osr method exists but we are waiting |
2983 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2984 // the c1 version and only be able to find the c2 version. However | |
2985 // while we overflow in the c1 code at back branches we don't want to | |
2986 // try and switch to the same code as we are already running | |
2987 | |
0 | 2988 if (osr->method() == m && |
2989 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2990 if (match_level) { |
2991 if (osr->comp_level() == comp_level) { | |
2992 // Found a match - return it. | |
2993 OsrList_lock->unlock(); | |
2994 return osr; | |
2995 } | |
2996 } else { | |
2997 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2998 if (osr->comp_level() == CompLevel_highest_tier) { | |
2999 // Found the best possible - return it. | |
3000 OsrList_lock->unlock(); | |
3001 return osr; | |
3002 } | |
3003 best = osr; | |
3004 } | |
3005 } | |
0 | 3006 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
3007 osr = osr->osr_link(); |
0 | 3008 } |
3009 OsrList_lock->unlock(); | |
1783 | 3010 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
3011 return best; | |
3012 } | |
0 | 3013 return NULL; |
3014 } | |
3015 | |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3016 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
|
3017 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
|
3018 MutexLocker ml(MemberNameTable_lock); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3019 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
|
3020 |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3021 // 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
|
3022 // 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
|
3023 // is called! |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3024 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
|
3025 if (method->is_obsolete()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3026 return false; |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3027 } else if (method->is_old()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3028 // Replace method with redefined version |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3029 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
|
3030 } |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3031 |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3032 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
3033 _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
|
3034 } |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3035 _member_names->add_member_name(mem_name_wref); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3036 return true; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3037 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3038 |
0 | 3039 // ----------------------------------------------------------------------------------------------------- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3040 // Printing |
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3041 |
0 | 3042 #ifndef PRODUCT |
3043 | |
665
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3044 #define BULLET " - " |
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3045 |
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3046 static const char* state_names[] = { |
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3047 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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3048 }; |
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3049 |
12264
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3050 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
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3051 for (int i = 0; i < len; i++) { |
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3052 intptr_t e = start[i]; |
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3053 st->print("%d : " INTPTR_FORMAT, i, e); |
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3054 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
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3055 st->print(" "); |
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3056 ((Metadata*)e)->print_value_on(st); |
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3057 } |
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3058 st->cr(); |
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3059 } |
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3060 } |
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3061 |
6725
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3062 void InstanceKlass::print_on(outputStream* st) const { |
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3063 assert(is_klass(), "must be klass"); |
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3064 Klass::print_on(st); |
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3065 |
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3066 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
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3067 st->print(BULLET"klass size: %d", size()); st->cr(); |
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3068 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
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8037816: Fix for 8036122 breaks build with Xcode5/clang
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3069 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
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3070 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
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3071 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
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3072 st->print(BULLET"sub: "); |
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3073 Klass* sub = subklass(); |
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3074 int n; |
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3075 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
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3076 if (n < MaxSubklassPrintSize) { |
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3077 sub->print_value_on(st); |
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3078 st->print(" "); |
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3079 } |
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3080 } |
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3081 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
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3082 st->cr(); |
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3083 |
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3084 if (is_interface()) { |
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3085 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
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3086 if (nof_implementors() == 1) { |
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3087 st->print_cr(BULLET"implementor: "); |
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3088 st->print(" "); |
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|
3089 implementor()->print_value_on(st); |
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|
3090 st->cr(); |
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|
3091 } |
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|
3092 } |
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|
3093 |
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|
3094 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
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3095 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
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3096 if (Verbose || WizardMode) { |
6725
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|
3097 Array<Method*>* method_array = methods(); |
12823
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diff
changeset
|
3098 for (int i = 0; i < method_array->length(); i++) { |
6725
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3099 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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3100 } |
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3101 } |
12823
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|
3102 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
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|
3103 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
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|
3104 if (Verbose && default_methods() != NULL) { |
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|
3105 Array<Method*>* method_array = default_methods(); |
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|
3106 for (int i = 0; i < method_array->length(); i++) { |
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changeset
|
3107 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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parents:
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|
3108 } |
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parents:
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|
3109 } |
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parents:
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|
3110 if (default_vtable_indices() != NULL) { |
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parents:
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changeset
|
3111 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
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|
3112 } |
6725
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3113 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
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3114 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
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3115 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
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3116 if (class_loader_data() != NULL) { |
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|
3117 st->print(BULLET"class loader data: "); |
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3118 class_loader_data()->print_value_on(st); |
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|
3119 st->cr(); |
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|
3120 } |
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|
3121 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
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3122 if (source_file_name() != NULL) { |
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|
3123 st->print(BULLET"source file: "); |
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|
3124 source_file_name()->print_value_on(st); |
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|
3125 st->cr(); |
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|
3126 } |
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|
3127 if (source_debug_extension() != NULL) { |
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|
3128 st->print(BULLET"source debug extension: "); |
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|
3129 st->print("%s", source_debug_extension()); |
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|
3130 st->cr(); |
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|
3131 } |
8031 | 3132 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3133 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3134 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3135 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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3136 { |
12281
4f9a42c33738
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|
3137 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3138 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
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|
3139 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
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diff
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|
3140 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
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|
3141 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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changeset
|
3142 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3143 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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|
3144 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
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|
3145 } |
4f9a42c33738
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|
3146 if (have_pv) st->cr(); |
4f9a42c33738
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|
3147 } // pvw is cleaned up |
6725
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|
3148 |
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|
3149 if (generic_signature() != NULL) { |
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|
3150 st->print(BULLET"generic signature: "); |
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|
3151 generic_signature()->print_value_on(st); |
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|
3152 st->cr(); |
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|
3153 } |
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|
3154 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
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|
3155 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
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|
3156 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
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|
3157 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
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|
3158 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
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|
3159 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
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|
3160 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
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3161 FieldPrinter print_static_field(st); |
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|
3162 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
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changeset
|
3163 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
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|
3164 FieldPrinter print_nonstatic_field(st); |
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|
3165 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3166 |
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changeset
|
3167 st->print(BULLET"non-static oop maps: "); |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3168 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
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|
3169 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
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|
3170 while (map < end_map) { |
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|
3171 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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|
3172 map++; |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3173 } |
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changeset
|
3174 st->cr(); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3175 } |
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|
3176 |
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changeset
|
3177 #endif //PRODUCT |
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|
3178 |
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changeset
|
3179 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
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changeset
|
3180 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
|
3181 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
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|
3182 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3183 } |
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|
3184 |
da91efe96a93
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changeset
|
3185 #ifndef PRODUCT |
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3186 |
0 | 3187 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
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6814659: separable cleanups and subroutines for 6655638
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changeset
|
3188 _st->print(BULLET); |
2376
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diff
changeset
|
3189 if (_obj == NULL) { |
0 | 3190 fd->print_on(_st); |
3191 _st->cr(); | |
3192 } else { | |
3193 fd->print_on_for(_st, _obj); | |
3194 _st->cr(); | |
3195 } | |
3196 } | |
3197 | |
3198 | |
6725
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|
3199 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3200 Klass::oop_print_on(obj, st); |
3201 | |
6725
da91efe96a93
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changeset
|
3202 if (this == SystemDictionary::String_klass()) { |
0 | 3203 typeArrayOop value = java_lang_String::value(obj); |
3204 juint offset = java_lang_String::offset(obj); | |
3205 juint length = java_lang_String::length(obj); | |
3206 if (value != NULL && | |
3207 value->is_typeArray() && | |
3208 offset <= (juint) value->length() && | |
3209 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
3210 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3211 java_lang_String::print(obj, st); |
0 | 3212 st->cr(); |
3213 if (!WizardMode) return; // that is enough | |
3214 } | |
3215 } | |
3216 | |
665
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jrose
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changeset
|
3217 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
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7017732: move static fields into Class to prepare for perm gen removal
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parents:
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diff
changeset
|
3218 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
|
3219 do_nonstatic_fields(&print_field); |
0 | 3220 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3221 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
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parents:
605
diff
changeset
|
3222 st->print(BULLET"signature: "); |
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changeset
|
3223 java_lang_Class::print_signature(obj, st); |
c89f86385056
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diff
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|
3224 st->cr(); |
6725
da91efe96a93
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changeset
|
3225 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
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parents:
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diff
changeset
|
3226 st->print(BULLET"fake entry for mirror: "); |
6725
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coleenp
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changeset
|
3227 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3228 st->cr(); |
6725
da91efe96a93
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changeset
|
3229 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3230 st->print(BULLET"fake entry for array: "); |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3231 array_klass->print_value_on_maybe_null(st); |
0 | 3232 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3233 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
|
3234 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3235 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3236 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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changeset
|
3237 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
|
3238 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3239 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3240 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3241 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3242 st->cr(); |
0 | 3243 } |
3244 } | |
3245 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3246 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3247 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3248 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3249 st->print("a "); |
3250 name()->print_value_on(st); | |
3251 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3252 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3253 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3254 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3255 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3256 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3257 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3258 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3259 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3260 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3261 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3262 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3263 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3264 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3265 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3266 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3267 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3268 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3269 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3270 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3271 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3272 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3273 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3274 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3275 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3276 } 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
|
3277 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
|
3278 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3279 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3280 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3281 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3282 } 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
|
3283 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
|
3284 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3285 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3286 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3287 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3288 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
|
3289 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3290 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
|
3291 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
3292 } |
0 | 3293 } |
3294 | |
6725
da91efe96a93
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coleenp
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diff
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|
3295 const char* InstanceKlass::internal_name() const { |
0 | 3296 return external_name(); |
3297 } | |
3298 | |
7956 | 3299 #if INCLUDE_SERVICES |
3300 // Size Statistics | |
3301 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3302 Klass::collect_statistics(sz); | |
3303 | |
3304 sz->_inst_size = HeapWordSize * size_helper(); | |
3305 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3306 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3307 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3308 ((is_interface() || is_anonymous()) ? | |
3309 align_object_offset(nonstatic_oop_map_size()) : | |
3310 nonstatic_oop_map_size()); | |
3311 | |
3312 int n = 0; | |
3313 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3314 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3315 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3316 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3317 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3318 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3319 sz->_ro_bytes += n; | |
3320 | |
3321 const ConstantPool* cp = constants(); | |
3322 if (cp) { | |
3323 cp->collect_statistics(sz); | |
3324 } | |
3325 | |
3326 const Annotations* anno = annotations(); | |
3327 if (anno) { | |
3328 anno->collect_statistics(sz); | |
3329 } | |
3330 | |
3331 const Array<Method*>* methods_array = methods(); | |
3332 if (methods()) { | |
3333 for (int i = 0; i < methods_array->length(); i++) { | |
3334 Method* method = methods_array->at(i); | |
3335 if (method) { | |
3336 sz->_method_count ++; | |
3337 method->collect_statistics(sz); | |
3338 } | |
3339 } | |
3340 } | |
3341 } | |
3342 #endif // INCLUDE_SERVICES | |
3343 | |
0 | 3344 // Verification |
3345 | |
3346 class VerifyFieldClosure: public OopClosure { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3347 protected: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3348 template <class T> void do_oop_work(T* p) { |
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diff
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|
3349 oop obj = oopDesc::load_decode_heap_oop(p); |
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diff
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|
3350 if (!obj->is_oop_or_null()) { |
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52
diff
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|
3351 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3352 Universe::print(); |
3353 guarantee(false, "boom"); | |
3354 } | |
3355 } | |
113
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diff
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|
3356 public: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
52
diff
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|
3357 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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|
3358 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3359 }; |
3360 | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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17464
diff
changeset
|
3361 void InstanceKlass::verify_on(outputStream* st) { |
6725
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|
3362 #ifndef PRODUCT |
11034 | 3363 // Avoid redundant verifies, this really should be in product. |
6725
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|
3364 if (_verify_count == Universe::verify_count()) return; |
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|
3365 _verify_count = Universe::verify_count(); |
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|
3366 #endif |
11034 | 3367 |
3368 // Verify Klass | |
17674
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diff
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|
3369 Klass::verify_on(st); |
85318d1fe8fe
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diff
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|
3370 |
85318d1fe8fe
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|
3371 // Verify that klass is present in ClassLoaderData |
85318d1fe8fe
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|
3372 guarantee(class_loader_data()->contains_klass(this), |
85318d1fe8fe
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|
3373 "this class isn't found in class loader data"); |
6725
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|
3374 |
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|
3375 // Verify vtables |
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|
3376 if (is_linked()) { |
11034 | 3377 ResourceMark rm; |
6725
da91efe96a93
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|
3378 // $$$ This used to be done only for m/s collections. Doing it |
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|
3379 // always seemed a valid generalization. (DLD -- 6/00) |
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|
3380 vtable()->verify(st); |
da91efe96a93
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|
3381 } |
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|
3382 |
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|
3383 // Verify first subklass |
da91efe96a93
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|
3384 if (subklass_oop() != NULL) { |
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|
3385 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3386 } |
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|
3387 |
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6964458: Reimplement class meta-data storage to use native memory
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|
3388 // Verify siblings |
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|
3389 Klass* super = this->super(); |
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|
3390 Klass* sib = next_sibling(); |
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diff
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|
3391 if (sib != NULL) { |
da91efe96a93
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diff
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|
3392 if (sib == this) { |
da91efe96a93
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|
3393 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3394 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3395 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3396 guarantee(sib->is_klass(), "should be klass"); |
da91efe96a93
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|
3397 guarantee(sib->super() == super, "siblings should have same superklass"); |
da91efe96a93
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|
3398 } |
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|
3399 |
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|
3400 // Verify implementor fields |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3401 Klass* im = implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3402 if (im != NULL) { |
da91efe96a93
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|
3403 guarantee(is_interface(), "only interfaces should have implementor set"); |
da91efe96a93
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|
3404 guarantee(im->is_klass(), "should be klass"); |
6983 | 3405 guarantee(!im->is_interface() || im == this, |
6725
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|
3406 "implementors cannot be interfaces"); |
da91efe96a93
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|
3407 } |
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|
3408 |
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|
3409 // Verify local interfaces |
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diff
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|
3410 if (local_interfaces()) { |
da91efe96a93
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|
3411 Array<Klass*>* local_interfaces = this->local_interfaces(); |
da91efe96a93
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|
3412 for (int j = 0; j < local_interfaces->length(); j++) { |
da91efe96a93
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|
3413 Klass* e = local_interfaces->at(j); |
6983 | 3414 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3415 } |
da91efe96a93
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diff
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|
3416 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3417 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3418 // Verify transitive interfaces |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3419 if (transitive_interfaces() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3420 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
da91efe96a93
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|
3421 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3422 Klass* e = transitive_interfaces->at(j); |
6983 | 3423 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
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|
3424 } |
da91efe96a93
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diff
changeset
|
3425 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3426 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3427 // Verify methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
3428 if (methods() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3429 Array<Method*>* methods = this->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3430 for (int j = 0; j < methods->length(); j++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3431 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
3432 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3433 for (int j = 0; j < methods->length() - 1; j++) { |
da91efe96a93
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coleenp
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|
3434 Method* m1 = methods->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3435 Method* m2 = methods->at(j + 1); |
da91efe96a93
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coleenp
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diff
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|
3436 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
3437 } |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
3438 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3439 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3440 // Verify method ordering |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3441 if (method_ordering() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3442 Array<int>* method_ordering = this->method_ordering(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3443 int length = method_ordering->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3444 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3445 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3446 guarantee(length == methods()->length(), "invalid method ordering length"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3447 jlong sum = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3448 for (int j = 0; j < length; j++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3449 int original_index = method_ordering->at(j); |
da91efe96a93
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diff
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|
3450 guarantee(original_index >= 0, "invalid method ordering index"); |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3451 guarantee(original_index < length, "invalid method ordering index"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3452 sum += original_index; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3453 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3454 // Verify sum of indices 0,1,...,length-1 |
da91efe96a93
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coleenp
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diff
changeset
|
3455 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
da91efe96a93
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diff
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|
3456 } else { |
da91efe96a93
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changeset
|
3457 guarantee(length == 0, "invalid method ordering length"); |
da91efe96a93
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diff
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|
3458 } |
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diff
changeset
|
3459 } |
da91efe96a93
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|
3460 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3461 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3462 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3463 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3464 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3465 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3466 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3467 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3468 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3469 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3470 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
|
3471 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3472 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3473 |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
3474 // Verify JNI static field identifiers |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3475 if (jni_ids() != NULL) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3476 jni_ids()->verify(this); |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3477 } |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3478 |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3479 // Verify other fields |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3480 if (array_klasses() != NULL) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3481 guarantee(array_klasses()->is_klass(), "should be klass"); |
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3482 } |
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3483 if (constants() != NULL) { |
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3484 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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3485 } |
8693
872b3feace55
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|
3486 const Klass* host = host_klass(); |
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|
3487 if (host != NULL) { |
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|
3488 guarantee(host->is_klass(), "should be klass"); |
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3489 } |
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3490 } |
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3491 |
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3492 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3493 Klass::oop_verify_on(obj, st); |
3494 VerifyFieldClosure blk; | |
6725
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3495 obj->oop_iterate_no_header(&blk); |
0 | 3496 } |
3497 | |
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3498 |
113
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3499 // JNIid class for jfieldIDs only |
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3500 // Note to reviewers: |
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3501 // These JNI functions are just moved over to column 1 and not changed |
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3502 // in the compressed oops workspace. |
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3503 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3504 _holder = holder; |
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3505 _offset = offset; |
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3506 _next = next; |
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3507 debug_only(_is_static_field_id = false;) |
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3508 } |
0 | 3509 |
3510 | |
113
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3511 JNIid* JNIid::find(int offset) { |
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3512 JNIid* current = this; |
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3513 while (current != NULL) { |
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3514 if (current->offset() == offset) return current; |
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3515 current = current->next(); |
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|
3516 } |
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|
3517 return NULL; |
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|
3518 } |
0 | 3519 |
3520 void JNIid::deallocate(JNIid* current) { | |
113
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3521 while (current != NULL) { |
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3522 JNIid* next = current->next(); |
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3523 delete current; |
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|
3524 current = next; |
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|
3525 } |
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|
3526 } |
0 | 3527 |
3528 | |
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3529 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
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|
3530 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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3531 int end_field_offset; |
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3532 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3533 |
113
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3534 JNIid* current = this; |
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3535 while (current != NULL) { |
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|
3536 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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|
3537 #ifdef ASSERT |
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|
3538 int o = current->offset(); |
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3539 if (current->is_static_field_id()) { |
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|
3540 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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|
3541 } |
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|
3542 #endif |
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|
3543 current = current->next(); |
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|
3544 } |
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|
3545 } |
0 | 3546 |
3547 | |
3548 #ifdef ASSERT | |
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3549 void InstanceKlass::set_init_state(ClassState state) { |
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3550 bool good_state = is_shared() ? (_init_state <= state) |
113
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3551 : (_init_state < state); |
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|
3552 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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|
3553 _init_state = (u1)state; |
113
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3554 } |
0 | 3555 #endif |
3556 | |
3557 | |
3558 // RedefineClasses() support for previous versions: | |
3559 | |
6725
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3560 // Purge previous versions |
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|
3561 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3562 if (ik->previous_versions() != NULL) { |
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3563 // This klass has previous versions so see what we can cleanup |
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3564 // while it is safe to do so. |
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|
3565 |
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|
3566 int deleted_count = 0; // leave debugging breadcrumbs |
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3567 int live_count = 0; |
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|
3568 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3569 ClassLoaderData::the_null_class_loader_data() : |
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|
3570 ik->class_loader_data(); |
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|
3571 |
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|
3572 // RC_TRACE macro has an embedded ResourceMark |
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|
3573 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3574 ik->external_name(), ik->previous_versions()->length())); |
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|
3575 |
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|
3576 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3577 // check the previous versions array |
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|
3578 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3579 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3580 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3581 |
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|
3582 ConstantPool* pvcp = cp_ref; |
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3583 if (!pvcp->on_stack()) { |
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3584 // If the constant pool isn't on stack, none of the methods |
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3585 // are executing. Delete all the methods, the constant pool and |
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|
3586 // and this previous version node. |
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|
3587 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3588 if (method_refs != NULL) { |
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3589 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3590 Method* method = method_refs->at(j); |
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|
3591 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3592 method_refs->remove_at(j); |
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|
3593 // method will be freed with associated class. |
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|
3594 } |
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|
3595 } |
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|
3596 // Remove the constant pool |
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|
3597 delete pv_node; |
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|
3598 // Since we are traversing the array backwards, we don't have to |
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|
3599 // do anything special with the index. |
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|
3600 ik->previous_versions()->remove_at(i); |
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|
3601 deleted_count++; |
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|
3602 continue; |
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|
3603 } else { |
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|
3604 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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|
3605 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3606 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3607 live_count++; |
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|
3608 } |
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|
3609 |
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|
3610 // At least one method is live in this previous version, clean out |
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3611 // the others or mark them as obsolete. |
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3612 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3613 if (method_refs != NULL) { |
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|
3614 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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|
3615 method_refs->length())); |
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3616 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3617 Method* method = method_refs->at(j); |
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|
3618 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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|
3619 |
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|
3620 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3621 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
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diff
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|
3622 // 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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|
3623 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3624 method_refs->remove_at(j); |
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diff
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|
3625 } else if (emcp_method_count == 0) { |
da91efe96a93
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diff
changeset
|
3626 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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|
3627 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3628 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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diff
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|
3629 RC_TRACE(0x00000200, |
da91efe96a93
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coleenp
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diff
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|
3630 ("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
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|
3631 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3632 method->signature()->as_C_string(), j, i)); |
da91efe96a93
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diff
changeset
|
3633 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3634 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3635 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3636 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3637 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
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diff
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|
3638 RC_TRACE(0x00000200, |
da91efe96a93
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diff
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|
3639 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3640 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3641 } |
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diff
changeset
|
3642 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3643 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3644 // External interface for use during class unloading. |
da91efe96a93
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|
3645 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3646 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
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|
3647 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3648 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3649 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3650 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3651 // Potentially add an information node that contains pointers to the |
0 | 3652 // 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
|
3653 // 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
|
3654 // 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
|
3655 // 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
|
3656 // 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
|
3657 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3658 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
|
3659 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3660 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
|
3661 "only VMThread can add previous versions"); |
0 | 3662 |
3663 if (_previous_versions == NULL) { | |
3664 // This is the first previous version so make some space. | |
3665 // Start with 2 elements under the assumption that the class | |
3666 // won't be redefined much. | |
6197 | 3667 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3668 GrowableArray<PreviousVersionNode *>(2, true); |
3669 } | |
3670 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3671 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3672 |
0 | 3673 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3674 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
|
3675 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3676 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
|
3677 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3678 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3679 // 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
|
3680 // 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
|
3681 // 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
|
3682 // 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
|
3683 // 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
|
3684 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3685 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3686 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3687 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3688 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3689 // 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
|
3690 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
|
3691 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3692 ("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
|
3693 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3694 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3695 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
|
3696 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3697 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
|
3698 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3699 // 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
|
3700 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
|
3701 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3702 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3703 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3704 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3705 // 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
|
3706 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3707 } |
0 | 3708 } |
3709 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3710 // 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
|
3711 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
|
3712 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3713 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3714 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3715 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3716 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3717 // 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
|
3718 // is a good time to clear out unused references. |
0 | 3719 |
3720 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3721 _previous_versions->length())); | |
3722 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3723 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3724 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3725 |
3726 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3727 | |
3728 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
|
3729 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3730 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3731 // clear out any matching EMCP method entries the hard way. |
3732 int local_count = 0; | |
3733 for (int i = 0; i < old_methods->length(); i++) { | |
3734 if (!emcp_methods->at(i)) { | |
3735 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3736 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3737 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3738 Symbol* m_signature = old_method->signature(); |
0 | 3739 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3740 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3741 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
|
3742 // 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
|
3743 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3744 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3745 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3746 if (method_refs == NULL) { |
3747 // We have run into a PreviousVersion generation where | |
3748 // all methods were made obsolete during that generation's | |
3749 // RedefineClasses() operation. At the time of that | |
3750 // operation, all EMCP methods were flushed so we don't | |
3751 // have to go back any further. | |
3752 // | |
3753 // A NULL method_refs is different than an empty method_refs. | |
3754 // We cannot infer any optimizations about older generations | |
3755 // from an empty method_refs for the current generation. | |
3756 break; | |
3757 } | |
3758 | |
3759 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
|
3760 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3761 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3762 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3763 method->name() == m_name && |
0 | 3764 method->signature() == m_signature) { |
3765 // The current RedefineClasses() call has made all EMCP | |
3766 // 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
|
3767 // and remove the reference. |
0 | 3768 RC_TRACE(0x00000400, |
3769 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3770 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3771 | |
3772 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3773 // 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
|
3774 // clean up later. |
0 | 3775 break; |
3776 } | |
3777 } | |
3778 | |
3779 // The previous loop may not find a matching EMCP method, but | |
3780 // that doesn't mean that we can optimize and not go any | |
3781 // 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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3782 // method for this generation could have already been deleted, |
0 | 3783 // 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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|
3784 // been deleted. |
0 | 3785 } |
3786 | |
3787 if (++local_count >= obsolete_method_count) { | |
3788 // no more obsolete methods so bail out now | |
3789 break; | |
3790 } | |
3791 } | |
3792 } | |
3793 } | |
3794 } // end add_previous_version() | |
3795 | |
3796 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3797 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3798 bool InstanceKlass::has_previous_version() const { |
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6964458: Reimplement class meta-data storage to use native memory
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3799 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3800 } // end has_previous_version() |
3801 | |
6725
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3802 |
22933
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|
3803 InstanceKlass* InstanceKlass::get_klass_version(int version) { |
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8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3804 if (constants()->version() == version) { |
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3805 return this; |
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|
3806 } |
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|
3807 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
1a9c5e6e13b7
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|
3808 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
1a9c5e6e13b7
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|
3809 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
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3810 ConstantPool* prev_cp = pv_node->prev_constant_pool(); |
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8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3811 if (prev_cp->version() == version) { |
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|
3812 return prev_cp->pool_holder(); |
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|
3813 } |
1a9c5e6e13b7
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|
3814 } |
1a9c5e6e13b7
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|
3815 return NULL; // None found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3816 } |
1a9c5e6e13b7
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|
3817 |
1a9c5e6e13b7
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|
3818 |
6725
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3819 Method* InstanceKlass::method_with_idnum(int idnum) { |
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6964458: Reimplement class meta-data storage to use native memory
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3820 Method* m = NULL; |
0 | 3821 if (idnum < methods()->length()) { |
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3822 m = methods()->at(idnum); |
0 | 3823 } |
3824 if (m == NULL || m->method_idnum() != idnum) { | |
3825 for (int index = 0; index < methods()->length(); ++index) { | |
6725
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|
3826 m = methods()->at(index); |
0 | 3827 if (m->method_idnum() == idnum) { |
3828 return m; | |
3829 } | |
3830 } | |
12281
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|
3831 // None found, return null for the caller to handle. |
4f9a42c33738
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|
3832 return NULL; |
0 | 3833 } |
3834 return m; | |
3835 } | |
3836 | |
22933
1a9c5e6e13b7
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|
3837 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3838 Method* InstanceKlass::method_with_orig_idnum(int idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3839 if (idnum >= methods()->length()) { |
1a9c5e6e13b7
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|
3840 return NULL; |
1a9c5e6e13b7
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|
3841 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3842 Method* m = methods()->at(idnum); |
1a9c5e6e13b7
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|
3843 if (m != NULL && m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
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sspitsyn
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|
3844 return m; |
1a9c5e6e13b7
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|
3845 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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changeset
|
3846 // Obsolete method idnum does not match the original idnum |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3847 for (int index = 0; index < methods()->length(); ++index) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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|
3848 m = methods()->at(index); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3849 if (m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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|
3850 return m; |
1a9c5e6e13b7
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sspitsyn
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diff
changeset
|
3851 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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diff
changeset
|
3852 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3853 // None found, return null for the caller to handle. |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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changeset
|
3854 return NULL; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3855 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3856 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3857 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3858 Method* InstanceKlass::method_with_orig_idnum(int idnum, int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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|
3859 InstanceKlass* holder = get_klass_version(version); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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diff
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|
3860 if (holder == NULL) { |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
changeset
|
3861 return NULL; // The version of klass is gone, no method is found |
1a9c5e6e13b7
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sspitsyn
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|
3862 } |
1a9c5e6e13b7
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sspitsyn
parents:
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changeset
|
3863 Method* method = holder->method_with_orig_idnum(idnum); |
1a9c5e6e13b7
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sspitsyn
parents:
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changeset
|
3864 return method; |
1a9c5e6e13b7
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sspitsyn
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changeset
|
3865 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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changeset
|
3866 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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diff
changeset
|
3867 |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3868 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3869 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3870 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3871 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3872 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3873 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3874 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
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11096
diff
changeset
|
3875 |
0 | 3876 |
3877 // Construct a PreviousVersionNode entry for the array hung off | |
6725
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|
3878 // the InstanceKlass. |
da91efe96a93
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|
3879 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
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|
3880 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3881 |
3882 _prev_constant_pool = prev_constant_pool; | |
3883 _prev_EMCP_methods = prev_EMCP_methods; | |
3884 } | |
3885 | |
3886 | |
3887 // Destroy a PreviousVersionNode | |
3888 PreviousVersionNode::~PreviousVersionNode() { | |
3889 if (_prev_constant_pool != NULL) { | |
6725
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|
3890 _prev_constant_pool = NULL; |
0 | 3891 } |
3892 | |
3893 if (_prev_EMCP_methods != NULL) { | |
3894 delete _prev_EMCP_methods; | |
3895 } | |
3896 } | |
3897 | |
3898 // Construct a helper for walking the previous versions array | |
12281
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|
3899 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
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coleenp
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|
3900 _thread = thread; |
0 | 3901 _previous_versions = ik->previous_versions(); |
3902 _current_index = 0; | |
3903 _current_p = NULL; | |
12281
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|
3904 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3905 } |
3906 | |
3907 | |
3908 // Return the interesting information for the next previous version | |
3909 // of the klass. Returns NULL if there are no more previous versions. | |
12281
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|
3910 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3911 if (_previous_versions == NULL) { |
3912 // no previous versions so nothing to return | |
3913 return NULL; | |
3914 } | |
3915 | |
12281
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|
3916 _current_p = NULL; // reset to NULL |
4f9a42c33738
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|
3917 _current_constant_pool_handle = NULL; |
0 | 3918 |
3919 int length = _previous_versions->length(); | |
3920 | |
3921 while (_current_index < length) { | |
3922 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
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|
3923 |
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|
3924 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
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|
3925 // which keeps all the methods from being deallocated. |
4f9a42c33738
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|
3926 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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|
3927 _current_p = pv_node; |
4f9a42c33738
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coleenp
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12067
diff
changeset
|
3928 return pv_node; |
0 | 3929 } |
3930 | |
3931 return NULL; | |
3932 } // end next_previous_version() |