Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 20268:4c1b88a53c74
8046670: Make CMS metadata aware closures applicable for other collectors
Reviewed-by: ehelin, mgerdin
author | stefank |
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date | Tue, 24 Jun 2014 16:20:15 +0200 |
parents | 27188ae8bbbb |
children | 2c6ef90f030a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/iterator.inline.hpp" |
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39 #include "memory/metadataFactory.hpp" |
1972 | 40 #include "memory/oopFactory.hpp" |
3938 | 41 #include "oops/fieldStreams.hpp" |
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42 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 43 #include "oops/instanceKlass.hpp" |
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44 #include "oops/instanceMirrorKlass.hpp" |
1972 | 45 #include "oops/instanceOop.hpp" |
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46 #include "oops/klass.inline.hpp" |
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47 #include "oops/method.hpp" |
1972 | 48 #include "oops/oop.inline.hpp" |
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49 #include "oops/symbol.hpp" |
1972 | 50 #include "prims/jvmtiExport.hpp" |
51 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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52 #include "prims/jvmtiRedefineClasses.hpp" |
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53 #include "prims/methodComparator.hpp" |
1972 | 54 #include "runtime/fieldDescriptor.hpp" |
55 #include "runtime/handles.inline.hpp" | |
56 #include "runtime/javaCalls.hpp" | |
57 #include "runtime/mutexLocker.hpp" | |
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58 #include "runtime/orderAccess.inline.hpp" |
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59 #include "runtime/thread.inline.hpp" |
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60 #include "services/classLoadingService.hpp" |
1972 | 61 #include "services/threadService.hpp" |
62 #include "utilities/dtrace.hpp" | |
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63 #include "utilities/macros.hpp" |
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64 #if INCLUDE_ALL_GCS |
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65 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 66 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
67 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
68 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
69 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
70 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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71 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 72 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
73 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
74 #include "oops/oop.pcgc.inline.hpp" | |
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75 #endif // INCLUDE_ALL_GCS |
1972 | 76 #ifdef COMPILER1 |
77 #include "c1/c1_Compiler.hpp" | |
78 #endif | |
0 | 79 |
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80 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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81 |
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82 #ifdef DTRACE_ENABLED |
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83 |
4006 | 84 #ifndef USDT2 |
85 | |
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86 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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87 char*, intptr_t, oop, intptr_t); |
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88 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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89 char*, intptr_t, oop, intptr_t, int); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 |
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103 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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104 { \ |
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105 char* data = NULL; \ |
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106 int len = 0; \ |
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107 Symbol* name = (clss)->name(); \ |
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108 if (name != NULL) { \ |
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109 data = (char*)name->bytes(); \ |
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110 len = name->utf8_length(); \ |
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111 } \ |
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112 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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113 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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114 } |
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115 |
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116 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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117 { \ |
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118 char* data = NULL; \ |
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119 int len = 0; \ |
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120 Symbol* name = (clss)->name(); \ |
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121 if (name != NULL) { \ |
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122 data = (char*)name->bytes(); \ |
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123 len = name->utf8_length(); \ |
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124 } \ |
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125 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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126 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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127 } |
4006 | 128 #else /* USDT2 */ |
129 | |
130 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
131 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
132 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
133 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
134 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
135 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
136 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
137 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
138 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
139 { \ | |
140 char* data = NULL; \ | |
141 int len = 0; \ | |
142 Symbol* name = (clss)->name(); \ | |
143 if (name != NULL) { \ | |
144 data = (char*)name->bytes(); \ | |
145 len = name->utf8_length(); \ | |
146 } \ | |
147 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
148 data, len, (clss)->class_loader(), thread_type); \ | |
149 } | |
150 | |
151 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
152 { \ | |
153 char* data = NULL; \ | |
154 int len = 0; \ | |
155 Symbol* name = (clss)->name(); \ | |
156 if (name != NULL) { \ | |
157 data = (char*)name->bytes(); \ | |
158 len = name->utf8_length(); \ | |
159 } \ | |
160 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
161 data, len, (clss)->class_loader(), thread_type, wait); \ | |
162 } | |
163 #endif /* USDT2 */ | |
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164 |
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165 #else // ndef DTRACE_ENABLED |
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166 |
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167 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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168 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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169 |
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170 #endif // ndef DTRACE_ENABLED |
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171 |
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172 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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173 |
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174 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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175 ClassLoaderData* loader_data, |
8031 | 176 int vtable_len, |
177 int itable_len, | |
178 int static_field_size, | |
179 int nonstatic_oop_map_size, | |
180 ReferenceType rt, | |
181 AccessFlags access_flags, | |
182 Symbol* name, | |
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183 Klass* super_klass, |
8031 | 184 bool is_anonymous, |
185 TRAPS) { | |
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186 |
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187 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 188 access_flags.is_interface(), is_anonymous); |
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189 |
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190 // Allocation |
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191 InstanceKlass* ik; |
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192 if (rt == REF_NONE) { |
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193 if (name == vmSymbols::java_lang_Class()) { |
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194 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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195 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 196 access_flags, is_anonymous); |
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197 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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198 (SystemDictionary::ClassLoader_klass_loaded() && |
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199 super_klass != NULL && |
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200 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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201 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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202 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 203 access_flags, is_anonymous); |
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204 } else { |
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205 // normal class |
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206 ik = new (loader_data, size, THREAD) InstanceKlass( |
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207 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 208 access_flags, is_anonymous); |
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209 } |
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210 } else { |
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211 // reference klass |
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212 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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213 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 214 access_flags, is_anonymous); |
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215 } |
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216 |
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217 // Check for pending exception before adding to the loader data and incrementing |
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218 // class count. Can get OOM here. |
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219 if (HAS_PENDING_EXCEPTION) { |
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220 return NULL; |
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221 } |
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222 |
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223 // Add all classes to our internal class loader list here, |
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224 // including classes in the bootstrap (NULL) class loader. |
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225 loader_data->add_class(ik); |
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226 |
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227 Atomic::inc(&_total_instanceKlass_count); |
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228 return ik; |
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229 } |
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230 |
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231 |
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232 // copy method ordering from resource area to Metaspace |
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233 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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234 if (m != NULL) { |
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235 // allocate a new array and copy contents (memcpy?) |
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236 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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237 for (int i = 0; i < m->length(); i++) { |
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238 _method_ordering->at_put(i, m->at(i)); |
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239 } |
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240 } else { |
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241 _method_ordering = Universe::the_empty_int_array(); |
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242 } |
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243 } |
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244 |
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245 // create a new array of vtable_indices for default methods |
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246 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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247 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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248 assert(default_vtable_indices() == NULL, "only create once"); |
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249 set_default_vtable_indices(vtable_indices); |
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250 return vtable_indices; |
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251 } |
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252 |
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253 InstanceKlass::InstanceKlass(int vtable_len, |
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254 int itable_len, |
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255 int static_field_size, |
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256 int nonstatic_oop_map_size, |
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257 ReferenceType rt, |
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258 AccessFlags access_flags, |
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259 bool is_anonymous) { |
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260 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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261 |
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262 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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263 access_flags.is_interface(), is_anonymous); |
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264 |
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265 set_vtable_length(vtable_len); |
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266 set_itable_length(itable_len); |
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267 set_static_field_size(static_field_size); |
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268 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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269 set_access_flags(access_flags); |
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270 _misc_flags = 0; // initialize to zero |
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271 set_is_anonymous(is_anonymous); |
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272 assert(size() == iksize, "wrong size for object"); |
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273 |
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274 set_array_klasses(NULL); |
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275 set_methods(NULL); |
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276 set_method_ordering(NULL); |
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277 set_default_methods(NULL); |
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278 set_default_vtable_indices(NULL); |
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279 set_local_interfaces(NULL); |
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280 set_transitive_interfaces(NULL); |
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281 init_implementor(); |
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282 set_fields(NULL, 0); |
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283 set_constants(NULL); |
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284 set_class_loader_data(NULL); |
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285 set_source_file_name_index(0); |
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286 set_source_debug_extension(NULL, 0); |
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287 set_array_name(NULL); |
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288 set_inner_classes(NULL); |
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289 set_static_oop_field_count(0); |
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290 set_nonstatic_field_size(0); |
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291 set_is_marked_dependent(false); |
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292 set_init_state(InstanceKlass::allocated); |
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293 set_init_thread(NULL); |
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294 set_reference_type(rt); |
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295 set_oop_map_cache(NULL); |
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296 set_jni_ids(NULL); |
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297 set_osr_nmethods_head(NULL); |
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298 set_breakpoints(NULL); |
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299 init_previous_versions(); |
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300 set_generic_signature_index(0); |
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301 release_set_methods_jmethod_ids(NULL); |
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302 set_annotations(NULL); |
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303 set_jvmti_cached_class_field_map(NULL); |
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304 set_initial_method_idnum(0); |
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305 _dependencies = NULL; |
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306 set_jvmti_cached_class_field_map(NULL); |
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307 set_cached_class_file(NULL); |
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308 set_initial_method_idnum(0); |
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309 set_minor_version(0); |
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310 set_major_version(0); |
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311 NOT_PRODUCT(_verify_count = 0;) |
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312 |
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313 // initialize the non-header words to zero |
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314 intptr_t* p = (intptr_t*)this; |
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315 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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316 p[index] = NULL_WORD; |
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317 } |
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318 |
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319 // Set temporary value until parseClassFile updates it with the real instance |
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320 // size. |
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321 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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322 } |
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323 |
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324 |
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325 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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326 Array<Method*>* methods) { |
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327 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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328 !methods->is_shared()) { |
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329 for (int i = 0; i < methods->length(); i++) { |
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330 Method* method = methods->at(i); |
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331 if (method == NULL) continue; // maybe null if error processing |
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332 // Only want to delete methods that are not executing for RedefineClasses. |
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333 // The previous version will point to them so they're not totally dangling |
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334 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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335 MetadataFactory::free_metadata(loader_data, method); |
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336 } |
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337 MetadataFactory::free_array<Method*>(loader_data, methods); |
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338 } |
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339 } |
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340 |
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341 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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342 Klass* super_klass, |
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343 Array<Klass*>* local_interfaces, |
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344 Array<Klass*>* transitive_interfaces) { |
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345 // Only deallocate transitive interfaces if not empty, same as super class |
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346 // or same as local interfaces. See code in parseClassFile. |
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347 Array<Klass*>* ti = transitive_interfaces; |
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348 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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349 // check that the interfaces don't come from super class |
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350 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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351 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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352 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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353 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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354 } |
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355 } |
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356 |
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357 // local interfaces can be empty |
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358 if (local_interfaces != Universe::the_empty_klass_array() && |
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359 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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360 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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361 } |
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362 } |
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363 |
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364 // This function deallocates the metadata and C heap pointers that the |
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365 // InstanceKlass points to. |
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366 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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367 |
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368 // Orphan the mirror first, CMS thinks it's still live. |
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369 if (java_mirror() != NULL) { |
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370 java_lang_Class::set_klass(java_mirror(), NULL); |
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371 } |
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372 |
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373 // Need to take this class off the class loader data list. |
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374 loader_data->remove_class(this); |
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375 |
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376 // The array_klass for this class is created later, after error handling. |
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377 // For class redefinition, we keep the original class so this scratch class |
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378 // doesn't have an array class. Either way, assert that there is nothing |
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379 // to deallocate. |
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380 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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381 |
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382 // Release C heap allocated data that this might point to, which includes |
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383 // reference counting symbol names. |
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384 release_C_heap_structures(); |
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385 |
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386 deallocate_methods(loader_data, methods()); |
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387 set_methods(NULL); |
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388 |
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389 if (method_ordering() != NULL && |
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390 method_ordering() != Universe::the_empty_int_array() && |
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391 !method_ordering()->is_shared()) { |
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392 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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393 } |
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394 set_method_ordering(NULL); |
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395 |
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396 // default methods can be empty |
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397 if (default_methods() != NULL && |
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398 default_methods() != Universe::the_empty_method_array() && |
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399 !default_methods()->is_shared()) { |
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400 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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401 } |
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402 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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403 set_default_methods(NULL); |
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404 |
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405 // default methods vtable indices can be empty |
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406 if (default_vtable_indices() != NULL && |
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407 !default_vtable_indices()->is_shared()) { |
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408 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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409 } |
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410 set_default_vtable_indices(NULL); |
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411 |
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412 |
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413 // This array is in Klass, but remove it with the InstanceKlass since |
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414 // this place would be the only caller and it can share memory with transitive |
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415 // interfaces. |
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416 if (secondary_supers() != NULL && |
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417 secondary_supers() != Universe::the_empty_klass_array() && |
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418 secondary_supers() != transitive_interfaces() && |
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419 !secondary_supers()->is_shared()) { |
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420 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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421 } |
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422 set_secondary_supers(NULL); |
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423 |
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424 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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425 set_transitive_interfaces(NULL); |
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426 set_local_interfaces(NULL); |
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427 |
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428 if (fields() != NULL && !fields()->is_shared()) { |
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429 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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430 } |
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431 set_fields(NULL, 0); |
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432 |
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433 // If a method from a redefined class is using this constant pool, don't |
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434 // delete it, yet. The new class's previous version will point to this. |
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435 if (constants() != NULL) { |
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436 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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437 if (!constants()->is_shared()) { |
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438 MetadataFactory::free_metadata(loader_data, constants()); |
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439 } |
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440 set_constants(NULL); |
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441 } |
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442 |
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443 if (inner_classes() != NULL && |
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444 inner_classes() != Universe::the_empty_short_array() && |
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445 !inner_classes()->is_shared()) { |
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446 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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447 } |
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448 set_inner_classes(NULL); |
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449 |
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450 // We should deallocate the Annotations instance if it's not in shared spaces. |
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451 if (annotations() != NULL && !annotations()->is_shared()) { |
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452 MetadataFactory::free_metadata(loader_data, annotations()); |
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453 } |
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454 set_annotations(NULL); |
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455 } |
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456 |
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457 bool InstanceKlass::should_be_initialized() const { |
0 | 458 return !is_initialized(); |
459 } | |
460 | |
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461 klassVtable* InstanceKlass::vtable() const { |
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462 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 463 } |
464 | |
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465 klassItable* InstanceKlass::itable() const { |
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466 return new klassItable(instanceKlassHandle(this)); |
0 | 467 } |
468 | |
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469 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 470 if (!EagerInitialization) return; |
471 | |
472 if (this->is_not_initialized()) { | |
473 // abort if the the class has a class initializer | |
474 if (this->class_initializer() != NULL) return; | |
475 | |
476 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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477 Klass* super = this->super(); |
0 | 478 if (super == NULL) return; |
479 | |
480 // abort if the super class should be initialized | |
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481 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 482 |
483 // call body to expose the this pointer | |
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484 instanceKlassHandle this_oop(thread, this); |
0 | 485 eager_initialize_impl(this_oop); |
486 } | |
487 } | |
488 | |
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489 // JVMTI spec thinks there are signers and protection domain in the |
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490 // instanceKlass. These accessors pretend these fields are there. |
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491 // The hprof specification also thinks these fields are in InstanceKlass. |
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492 oop InstanceKlass::protection_domain() const { |
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493 // return the protection_domain from the mirror |
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494 return java_lang_Class::protection_domain(java_mirror()); |
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495 } |
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496 |
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497 // To remove these from requires an incompatible change and CCC request. |
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498 objArrayOop InstanceKlass::signers() const { |
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499 // return the signers from the mirror |
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500 return java_lang_Class::signers(java_mirror()); |
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501 } |
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502 |
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503 oop InstanceKlass::init_lock() const { |
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504 // return the init lock from the mirror |
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505 oop lock = java_lang_Class::init_lock(java_mirror()); |
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506 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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507 "only fully initialized state can have a null lock"); |
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508 return lock; |
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509 } |
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510 |
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511 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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512 // threads to get this lock will see a null lock and will not lock. |
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513 // That's okay because they all check for initialized state after getting |
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514 // the lock and return. |
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515 void InstanceKlass::fence_and_clear_init_lock() { |
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516 // make sure previous stores are all done, notably the init_state. |
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517 OrderAccess::storestore(); |
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518 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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519 assert(!is_not_initialized(), "class must be initialized now"); |
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520 } |
0 | 521 |
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522 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 523 EXCEPTION_MARK; |
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524 oop init_lock = this_oop->init_lock(); |
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525 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 526 |
527 // abort if someone beat us to the initialization | |
528 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
529 | |
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530 ClassState old_state = this_oop->init_state(); |
0 | 531 link_class_impl(this_oop, true, THREAD); |
532 if (HAS_PENDING_EXCEPTION) { | |
533 CLEAR_PENDING_EXCEPTION; | |
534 // Abort if linking the class throws an exception. | |
535 | |
536 // Use a test to avoid redundantly resetting the state if there's | |
537 // no change. Set_init_state() asserts that state changes make | |
538 // progress, whereas here we might just be spinning in place. | |
539 if( old_state != this_oop->_init_state ) | |
540 this_oop->set_init_state (old_state); | |
541 } else { | |
542 // linking successfull, mark class as initialized | |
543 this_oop->set_init_state (fully_initialized); | |
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544 this_oop->fence_and_clear_init_lock(); |
0 | 545 // trace |
546 if (TraceClassInitialization) { | |
547 ResourceMark rm(THREAD); | |
548 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
549 } | |
550 } | |
551 } | |
552 | |
553 | |
554 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
555 // process. The step comments refers to the procedure described in that section. | |
556 // Note: implementation moved to static method to expose the this pointer. | |
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557 void InstanceKlass::initialize(TRAPS) { |
0 | 558 if (this->should_be_initialized()) { |
559 HandleMark hm(THREAD); | |
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560 instanceKlassHandle this_oop(THREAD, this); |
0 | 561 initialize_impl(this_oop, CHECK); |
562 // Note: at this point the class may be initialized | |
563 // OR it may be in the state of being initialized | |
564 // in case of recursive initialization! | |
565 } else { | |
566 assert(is_initialized(), "sanity check"); | |
567 } | |
568 } | |
569 | |
570 | |
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571 bool InstanceKlass::verify_code( |
0 | 572 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
573 // 1) Verify the bytecodes | |
574 Verifier::Mode mode = | |
575 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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576 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 577 } |
578 | |
579 | |
580 // Used exclusively by the shared spaces dump mechanism to prevent | |
581 // classes mapped into the shared regions in new VMs from appearing linked. | |
582 | |
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583 void InstanceKlass::unlink_class() { |
0 | 584 assert(is_linked(), "must be linked"); |
585 _init_state = loaded; | |
586 } | |
587 | |
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588 void InstanceKlass::link_class(TRAPS) { |
0 | 589 assert(is_loaded(), "must be loaded"); |
590 if (!is_linked()) { | |
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591 HandleMark hm(THREAD); |
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592 instanceKlassHandle this_oop(THREAD, this); |
0 | 593 link_class_impl(this_oop, true, CHECK); |
594 } | |
595 } | |
596 | |
597 // Called to verify that a class can link during initialization, without | |
598 // throwing a VerifyError. | |
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599 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 600 assert(is_loaded(), "must be loaded"); |
601 if (!is_linked()) { | |
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602 HandleMark hm(THREAD); |
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603 instanceKlassHandle this_oop(THREAD, this); |
0 | 604 link_class_impl(this_oop, false, CHECK_false); |
605 } | |
606 return is_linked(); | |
607 } | |
608 | |
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609 bool InstanceKlass::link_class_impl( |
0 | 610 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
611 // check for error state | |
612 if (this_oop->is_in_error_state()) { | |
613 ResourceMark rm(THREAD); | |
614 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
615 this_oop->external_name(), false); | |
616 } | |
617 // return if already verified | |
618 if (this_oop->is_linked()) { | |
619 return true; | |
620 } | |
621 | |
622 // Timing | |
623 // timer handles recursion | |
624 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
625 JavaThread* jt = (JavaThread*)THREAD; | |
626 | |
627 // link super class before linking this class | |
628 instanceKlassHandle super(THREAD, this_oop->super()); | |
629 if (super.not_null()) { | |
630 if (super->is_interface()) { // check if super class is an interface | |
631 ResourceMark rm(THREAD); | |
632 Exceptions::fthrow( | |
633 THREAD_AND_LOCATION, | |
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634 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 635 "class %s has interface %s as super class", |
636 this_oop->external_name(), | |
637 super->external_name() | |
638 ); | |
639 return false; | |
640 } | |
641 | |
642 link_class_impl(super, throw_verifyerror, CHECK_false); | |
643 } | |
644 | |
645 // link all interfaces implemented by this class before linking this class | |
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646 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 647 int num_interfaces = interfaces->length(); |
648 for (int index = 0; index < num_interfaces; index++) { | |
649 HandleMark hm(THREAD); | |
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650 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 651 link_class_impl(ih, throw_verifyerror, CHECK_false); |
652 } | |
653 | |
654 // in case the class is linked in the process of linking its superclasses | |
655 if (this_oop->is_linked()) { | |
656 return true; | |
657 } | |
658 | |
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659 // trace only the link time for this klass that includes |
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660 // the verification time |
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661 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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662 ClassLoader::perf_class_link_selftime(), |
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663 ClassLoader::perf_classes_linked(), |
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664 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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665 jt->get_thread_stat()->perf_timers_addr(), |
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666 PerfClassTraceTime::CLASS_LINK); |
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667 |
0 | 668 // verification & rewriting |
669 { | |
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670 oop init_lock = this_oop->init_lock(); |
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671 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 672 // rewritten will have been set if loader constraint error found |
673 // on an earlier link attempt | |
674 // don't verify or rewrite if already rewritten | |
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675 |
0 | 676 if (!this_oop->is_linked()) { |
677 if (!this_oop->is_rewritten()) { | |
678 { | |
679 // Timer includes any side effects of class verification (resolution, | |
680 // etc), but not recursive entry into verify_code(). | |
875
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681 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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682 ClassLoader::perf_class_verify_selftime(), |
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683 ClassLoader::perf_classes_verified(), |
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684 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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685 jt->get_thread_stat()->perf_timers_addr(), |
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686 PerfClassTraceTime::CLASS_VERIFY); |
0 | 687 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
688 if (!verify_ok) { | |
689 return false; | |
690 } | |
691 } | |
692 | |
693 // Just in case a side-effect of verify linked this class already | |
694 // (which can sometimes happen since the verifier loads classes | |
695 // using custom class loaders, which are free to initialize things) | |
696 if (this_oop->is_linked()) { | |
697 return true; | |
698 } | |
699 | |
700 // also sets rewritten | |
701 this_oop->rewrite_class(CHECK_false); | |
702 } | |
703 | |
3748 | 704 // relocate jsrs and link methods after they are all rewritten |
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705 this_oop->link_methods(CHECK_false); |
3748 | 706 |
0 | 707 // Initialize the vtable and interface table after |
708 // methods have been rewritten since rewrite may | |
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709 // fabricate new Method*s. |
0 | 710 // also does loader constraint checking |
711 if (!this_oop()->is_shared()) { | |
712 ResourceMark rm(THREAD); | |
713 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
714 this_oop->itable()->initialize_itable(true, CHECK_false); | |
715 } | |
716 #ifdef ASSERT | |
717 else { | |
718 ResourceMark rm(THREAD); | |
719 this_oop->vtable()->verify(tty, true); | |
720 // In case itable verification is ever added. | |
721 // this_oop->itable()->verify(tty, true); | |
722 } | |
723 #endif | |
724 this_oop->set_init_state(linked); | |
725 if (JvmtiExport::should_post_class_prepare()) { | |
726 Thread *thread = THREAD; | |
727 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
728 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
729 } | |
730 } | |
731 } | |
732 return true; | |
733 } | |
734 | |
735 | |
736 // Rewrite the byte codes of all of the methods of a class. | |
737 // The rewriter must be called exactly once. Rewriting must happen after | |
738 // verification but before the first method of the class is executed. | |
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739 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 740 assert(is_loaded(), "must be loaded"); |
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741 instanceKlassHandle this_oop(THREAD, this); |
0 | 742 if (this_oop->is_rewritten()) { |
743 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
744 return; | |
745 } | |
3748 | 746 Rewriter::rewrite(this_oop, CHECK); |
0 | 747 this_oop->set_rewritten(); |
748 } | |
749 | |
3748 | 750 // Now relocate and link method entry points after class is rewritten. |
751 // This is outside is_rewritten flag. In case of an exception, it can be | |
752 // executed more than once. | |
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753 void InstanceKlass::link_methods(TRAPS) { |
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754 int len = methods()->length(); |
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755 for (int i = len-1; i >= 0; i--) { |
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756 methodHandle m(THREAD, methods()->at(i)); |
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757 |
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758 // Set up method entry points for compiler and interpreter . |
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759 m->link_method(m, CHECK); |
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760 |
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761 // This is for JVMTI and unrelated to relocator but the last thing we do |
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762 #ifdef ASSERT |
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763 if (StressMethodComparator) { |
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764 ResourceMark rm(THREAD); |
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765 static int nmc = 0; |
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766 for (int j = i; j >= 0 && j >= i-4; j--) { |
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767 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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768 bool z = MethodComparator::methods_EMCP(m(), |
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769 methods()->at(j)); |
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770 if (j == i && !z) { |
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771 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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772 assert(z, "method must compare equal to itself"); |
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773 } |
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774 } |
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775 } |
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776 #endif //ASSERT |
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777 } |
3748 | 778 } |
779 | |
0 | 780 |
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781 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 782 // Make sure klass is linked (verified) before initialization |
783 // A class could already be verified, since it has been reflected upon. | |
784 this_oop->link_class(CHECK); | |
785 | |
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786 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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787 |
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788 bool wait = false; |
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789 |
0 | 790 // refer to the JVM book page 47 for description of steps |
791 // Step 1 | |
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792 { |
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793 oop init_lock = this_oop->init_lock(); |
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794 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 795 |
796 Thread *self = THREAD; // it's passed the current thread | |
797 | |
798 // Step 2 | |
799 // If we were to use wait() instead of waitInterruptibly() then | |
800 // we might end up throwing IE from link/symbol resolution sites | |
801 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
802 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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803 wait = true; |
0 | 804 ol.waitUninterruptibly(CHECK); |
805 } | |
806 | |
807 // Step 3 | |
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808 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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809 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 810 return; |
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811 } |
0 | 812 |
813 // Step 4 | |
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814 if (this_oop->is_initialized()) { |
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815 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 816 return; |
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817 } |
0 | 818 |
819 // Step 5 | |
820 if (this_oop->is_in_error_state()) { | |
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821 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 822 ResourceMark rm(THREAD); |
823 const char* desc = "Could not initialize class "; | |
824 const char* className = this_oop->external_name(); | |
825 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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826 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 827 if (NULL == message) { |
828 // Out of memory: can't create detailed error message | |
829 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
830 } else { | |
831 jio_snprintf(message, msglen, "%s%s", desc, className); | |
832 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
833 } | |
834 } | |
835 | |
836 // Step 6 | |
837 this_oop->set_init_state(being_initialized); | |
838 this_oop->set_init_thread(self); | |
839 } | |
840 | |
841 // Step 7 | |
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842 Klass* super_klass = this_oop->super(); |
6983 | 843 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
844 super_klass->initialize(THREAD); | |
0 | 845 |
846 if (HAS_PENDING_EXCEPTION) { | |
847 Handle e(THREAD, PENDING_EXCEPTION); | |
848 CLEAR_PENDING_EXCEPTION; | |
849 { | |
850 EXCEPTION_MARK; | |
851 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
852 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
853 } | |
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854 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 855 THROW_OOP(e()); |
856 } | |
857 } | |
858 | |
6934 | 859 if (this_oop->has_default_methods()) { |
860 // Step 7.5: initialize any interfaces which have default methods | |
861 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
862 Klass* iface = this_oop->local_interfaces()->at(i); | |
863 InstanceKlass* ik = InstanceKlass::cast(iface); | |
864 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
865 ik->initialize(THREAD); | |
866 | |
867 if (HAS_PENDING_EXCEPTION) { | |
868 Handle e(THREAD, PENDING_EXCEPTION); | |
869 CLEAR_PENDING_EXCEPTION; | |
870 { | |
871 EXCEPTION_MARK; | |
872 // Locks object, set state, and notify all waiting threads | |
873 this_oop->set_initialization_state_and_notify( | |
874 initialization_error, THREAD); | |
875 | |
876 // ignore any exception thrown, superclass initialization error is | |
877 // thrown below | |
878 CLEAR_PENDING_EXCEPTION; | |
879 } | |
880 DTRACE_CLASSINIT_PROBE_WAIT( | |
881 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
882 THROW_OOP(e()); | |
883 } | |
884 } | |
885 } | |
886 } | |
887 | |
0 | 888 // Step 8 |
889 { | |
890 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
891 JavaThread* jt = (JavaThread*)THREAD; | |
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892 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 893 // Timer includes any side effects of class initialization (resolution, |
894 // etc), but not recursive entry into call_class_initializer(). | |
875
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895 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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896 ClassLoader::perf_class_init_selftime(), |
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897 ClassLoader::perf_classes_inited(), |
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898 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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899 jt->get_thread_stat()->perf_timers_addr(), |
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900 PerfClassTraceTime::CLASS_CLINIT); |
0 | 901 this_oop->call_class_initializer(THREAD); |
902 } | |
903 | |
904 // Step 9 | |
905 if (!HAS_PENDING_EXCEPTION) { | |
906 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
907 { ResourceMark rm(THREAD); | |
908 debug_only(this_oop->vtable()->verify(tty, true);) | |
909 } | |
910 } | |
911 else { | |
912 // Step 10 and 11 | |
913 Handle e(THREAD, PENDING_EXCEPTION); | |
914 CLEAR_PENDING_EXCEPTION; | |
915 { | |
916 EXCEPTION_MARK; | |
917 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
918 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
919 } | |
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920 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 921 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 922 THROW_OOP(e()); |
923 } else { | |
924 JavaCallArguments args(e); | |
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925 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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926 vmSymbols::throwable_void_signature(), |
0 | 927 &args); |
928 } | |
929 } | |
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930 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 931 } |
932 | |
933 | |
934 // Note: implementation moved to static method to expose the this pointer. | |
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935 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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936 instanceKlassHandle kh(THREAD, this); |
0 | 937 set_initialization_state_and_notify_impl(kh, state, CHECK); |
938 } | |
939 | |
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940 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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941 oop init_lock = this_oop->init_lock(); |
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942 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 943 this_oop->set_init_state(state); |
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944 this_oop->fence_and_clear_init_lock(); |
0 | 945 ol.notify_all(CHECK); |
946 } | |
947 | |
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948 // The embedded _implementor field can only record one implementor. |
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949 // When there are more than one implementors, the _implementor field |
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950 // is set to the interface Klass* itself. Following are the possible |
5998
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951 // values for the _implementor field: |
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952 // NULL - no implementor |
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953 // implementor Klass* - one implementor |
5998
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954 // self - more than one implementor |
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955 // |
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956 // The _implementor field only exists for interfaces. |
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957 void InstanceKlass::add_implementor(Klass* k) { |
0 | 958 assert(Compile_lock->owned_by_self(), ""); |
5998
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959 assert(is_interface(), "not interface"); |
0 | 960 // Filter out my subinterfaces. |
961 // (Note: Interfaces are never on the subklass list.) | |
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962 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 963 |
964 // Filter out subclasses whose supers already implement me. | |
965 // (Note: CHA must walk subclasses of direct implementors | |
966 // in order to locate indirect implementors.) | |
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967 Klass* sk = InstanceKlass::cast(k)->super(); |
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968 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 969 // We only need to check one immediate superclass, since the |
970 // implements_interface query looks at transitive_interfaces. | |
971 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
972 return; | |
973 | |
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974 Klass* ik = implementor(); |
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975 if (ik == NULL) { |
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976 set_implementor(k); |
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977 } else if (ik != this) { |
5998
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978 // There is already an implementor. Use itself as an indicator of |
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979 // more than one implementors. |
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980 set_implementor(this); |
0 | 981 } |
982 | |
983 // The implementor also implements the transitive_interfaces | |
984 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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985 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 986 } |
987 } | |
988 | |
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989 void InstanceKlass::init_implementor() { |
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990 if (is_interface()) { |
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991 set_implementor(NULL); |
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992 } |
0 | 993 } |
994 | |
995 | |
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996 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 997 // link this class into the implementors list of every interface it implements |
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998 Klass* this_as_klass_oop = this; |
0 | 999 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1000 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1001 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1002 assert(interf->is_interface(), "expected interface"); |
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1003 interf->add_implementor(this_as_klass_oop); |
0 | 1004 } |
1005 } | |
1006 | |
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1007 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1008 if (is_interface()) |
1009 return false; | |
1010 else | |
1011 return Klass::can_be_primary_super_slow(); | |
1012 } | |
1013 | |
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1014 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1015 // The secondaries are the implemented interfaces. |
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1016 InstanceKlass* ik = InstanceKlass::cast(this); |
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1017 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1018 int num_secondaries = num_extra_slots + interfaces->length(); |
1019 if (num_secondaries == 0) { | |
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1020 // Must share this for correct bootstrapping! |
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1021 set_secondary_supers(Universe::the_empty_klass_array()); |
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1022 return NULL; |
0 | 1023 } else if (num_extra_slots == 0) { |
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1024 // The secondary super list is exactly the same as the transitive interfaces. |
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1025 // Redefine classes has to be careful not to delete this! |
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1026 set_secondary_supers(interfaces); |
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1027 return NULL; |
0 | 1028 } else { |
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1029 // Copy transitive interfaces to a temporary growable array to be constructed |
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1030 // into the secondary super list with extra slots. |
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1031 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1032 for (int i = 0; i < interfaces->length(); i++) { |
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1033 secondaries->push(interfaces->at(i)); |
0 | 1034 } |
1035 return secondaries; | |
1036 } | |
1037 } | |
1038 | |
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1039 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1040 if (k->is_interface()) { |
0 | 1041 return implements_interface(k); |
1042 } else { | |
1043 return Klass::compute_is_subtype_of(k); | |
1044 } | |
1045 } | |
1046 | |
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1047 bool InstanceKlass::implements_interface(Klass* k) const { |
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1048 if (this == k) return true; |
6983 | 1049 assert(k->is_interface(), "should be an interface class"); |
0 | 1050 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1051 if (transitive_interfaces()->at(i) == k) { |
0 | 1052 return true; |
1053 } | |
1054 } | |
1055 return false; | |
1056 } | |
1057 | |
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1058 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1059 // Verify direct super interface |
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1060 if (this == k) return true; |
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1061 assert(k->is_interface(), "should be an interface class"); |
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1062 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1063 if (local_interfaces()->at(i) == k) { |
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1064 return true; |
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1065 } |
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1066 } |
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1067 return false; |
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1068 } |
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1069 |
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1070 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1071 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1072 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1073 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1074 JvmtiExport::post_array_size_exhausted(); |
0 | 1075 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1076 } | |
1077 int size = objArrayOopDesc::object_size(length); | |
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1078 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1079 KlassHandle h_ak (THREAD, ak); |
1080 objArrayOop o = | |
1081 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1082 return o; | |
1083 } | |
1084 | |
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1085 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1086 if (TraceFinalizerRegistration) { |
1087 tty->print("Registered "); | |
1088 i->print_value_on(tty); | |
1089 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1090 } | |
1091 instanceHandle h_i(THREAD, i); | |
1092 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1093 JavaValue result(T_VOID); | |
1094 JavaCallArguments args(h_i); | |
1095 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1096 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1097 return h_i(); | |
1098 } | |
1099 | |
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1100 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1101 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1102 int size = size_helper(); // Query before forming handle. | |
1103 | |
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1104 KlassHandle h_k(THREAD, this); |
0 | 1105 |
1106 instanceOop i; | |
1107 | |
1108 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1109 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1110 i = register_finalizer(i, CHECK_NULL); | |
1111 } | |
1112 return i; | |
1113 } | |
1114 | |
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1115 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1116 if (is_interface() || is_abstract()) { |
1117 ResourceMark rm(THREAD); | |
1118 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1119 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1120 } | |
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1121 if (this == SystemDictionary::Class_klass()) { |
0 | 1122 ResourceMark rm(THREAD); |
1123 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1124 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1125 } | |
1126 } | |
1127 | |
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1128 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1129 instanceKlassHandle this_oop(THREAD, this); |
0 | 1130 return array_klass_impl(this_oop, or_null, n, THREAD); |
1131 } | |
1132 | |
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1133 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1134 if (this_oop->array_klasses() == NULL) { |
1135 if (or_null) return NULL; | |
1136 | |
1137 ResourceMark rm; | |
1138 JavaThread *jt = (JavaThread *)THREAD; | |
1139 { | |
1140 // Atomic creation of array_klasses | |
1141 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1142 MutexLocker ma(MultiArray_lock, THREAD); | |
1143 | |
1144 // Check if update has already taken place | |
1145 if (this_oop->array_klasses() == NULL) { | |
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1146 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1147 this_oop->set_array_klasses(k); |
1148 } | |
1149 } | |
1150 } | |
1151 // _this will always be set at this point | |
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1152 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1153 if (or_null) { |
1154 return oak->array_klass_or_null(n); | |
1155 } | |
1156 return oak->array_klass(n, CHECK_NULL); | |
1157 } | |
1158 | |
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1159 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1160 return array_klass_impl(or_null, 1, THREAD); |
1161 } | |
1162 | |
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1163 void InstanceKlass::call_class_initializer(TRAPS) { |
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1164 instanceKlassHandle ik (THREAD, this); |
0 | 1165 call_class_initializer_impl(ik, THREAD); |
1166 } | |
1167 | |
1168 static int call_class_initializer_impl_counter = 0; // for debugging | |
1169 | |
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1170 Method* InstanceKlass::class_initializer() { |
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1171 Method* clinit = find_method( |
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1172 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1173 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1174 return clinit; |
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1175 } |
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1176 return NULL; |
0 | 1177 } |
1178 | |
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1179 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1180 if (ReplayCompiles && |
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1181 (ReplaySuppressInitializers == 1 || |
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1182 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1183 // Hide the existence of the initializer for the purpose of replaying the compile |
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1184 return; |
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1185 } |
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1186 |
0 | 1187 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1188 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1189 if (TraceClassInitialization) { | |
1190 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1191 this_oop->name()->print_value(); | |
1192 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1193 } | |
1194 if (h_method() != NULL) { | |
1195 JavaCallArguments args; // No arguments | |
1196 JavaValue result(T_VOID); | |
1197 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1198 } | |
1199 } | |
1200 | |
1201 | |
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1202 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1203 InterpreterOopMap* entry_for) { |
1204 // Dirty read, then double-check under a lock. | |
1205 if (_oop_map_cache == NULL) { | |
1206 // Otherwise, allocate a new one. | |
1207 MutexLocker x(OopMapCacheAlloc_lock); | |
1208 // First time use. Allocate a cache in C heap | |
1209 if (_oop_map_cache == NULL) { | |
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1210 // Release stores from OopMapCache constructor before assignment |
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1211 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1212 // required memory barrier only because of the volatile |
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1213 // qualifier of _oop_map_cache. |
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1214 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1215 } |
1216 } | |
1217 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1218 _oop_map_cache->lookup(method, bci, entry_for); | |
1219 } | |
1220 | |
1221 | |
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1222 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1223 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1224 Symbol* f_name = fs.name(); |
1225 Symbol* f_sig = fs.signature(); | |
0 | 1226 if (f_name == name && f_sig == sig) { |
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1227 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1228 return true; |
1229 } | |
1230 } | |
1231 return false; | |
1232 } | |
1233 | |
1234 | |
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1235 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1236 const int n = local_interfaces()->length(); |
1237 for (int i = 0; i < n; i++) { | |
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1238 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1239 assert(intf1->is_interface(), "just checking type"); |
0 | 1240 // search for field in current interface |
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1241 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1242 assert(fd->is_static(), "interface field must be static"); |
1243 return intf1; | |
1244 } | |
1245 // search for field in direct superinterfaces | |
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1246 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1247 if (intf2 != NULL) return intf2; |
1248 } | |
1249 // otherwise field lookup fails | |
1250 return NULL; | |
1251 } | |
1252 | |
1253 | |
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1254 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1255 // search order according to newest JVM spec (5.4.3.2, p.167). |
1256 // 1) search for field in current klass | |
1257 if (find_local_field(name, sig, fd)) { | |
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1258 return const_cast<InstanceKlass*>(this); |
0 | 1259 } |
1260 // 2) search for field recursively in direct superinterfaces | |
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1261 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1262 if (intf != NULL) return intf; |
1263 } | |
1264 // 3) apply field lookup recursively if superclass exists | |
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1265 { Klass* supr = super(); |
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1266 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1267 } |
1268 // 4) otherwise field lookup fails | |
1269 return NULL; | |
1270 } | |
1271 | |
1272 | |
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1273 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1274 // search order according to newest JVM spec (5.4.3.2, p.167). |
1275 // 1) search for field in current klass | |
1276 if (find_local_field(name, sig, fd)) { | |
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1277 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1278 } |
1279 // 2) search for field recursively in direct superinterfaces | |
1280 if (is_static) { | |
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1281 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1282 if (intf != NULL) return intf; |
1283 } | |
1284 // 3) apply field lookup recursively if superclass exists | |
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1285 { Klass* supr = super(); |
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1286 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1287 } |
1288 // 4) otherwise field lookup fails | |
1289 return NULL; | |
1290 } | |
1291 | |
1292 | |
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1293 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1294 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1295 if (fs.offset() == offset) { |
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1296 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1297 if (fd->is_static() == is_static) return true; |
1298 } | |
1299 } | |
1300 return false; | |
1301 } | |
1302 | |
1303 | |
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1304 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1305 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1306 while (klass != NULL) { |
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1307 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1308 return true; |
1309 } | |
6983 | 1310 klass = klass->super(); |
0 | 1311 } |
1312 return false; | |
1313 } | |
1314 | |
1315 | |
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1316 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1317 int len = methods()->length(); |
1318 for (int index = 0; index < len; index++) { | |
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1319 Method* m = methods()->at(index); |
0 | 1320 assert(m->is_method(), "must be method"); |
1321 f(m); | |
1322 } | |
1323 } | |
1324 | |
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1325 |
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1326 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1327 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1328 if (fs.access_flags().is_static()) { | |
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1329 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1330 cl->do_field(&fd); |
1331 } | |
0 | 1332 } |
1333 } | |
1334 | |
1335 | |
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1336 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1337 instanceKlassHandle h_this(THREAD, this); |
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1338 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1339 } |
1340 | |
1341 | |
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1342 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1343 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1344 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1345 if (fs.access_flags().is_static()) { |
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1346 fieldDescriptor& fd = fs.field_descriptor(); |
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1347 f(&fd, mirror, CHECK); |
3938 | 1348 } |
0 | 1349 } |
1350 } | |
1351 | |
1352 | |
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1353 static int compare_fields_by_offset(int* a, int* b) { |
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1354 return a[0] - b[0]; |
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1355 } |
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1356 |
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1357 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1358 InstanceKlass* super = superklass(); |
0 | 1359 if (super != NULL) { |
1360 super->do_nonstatic_fields(cl); | |
1361 } | |
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1362 fieldDescriptor fd; |
3938 | 1363 int length = java_fields_count(); |
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1364 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1365 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1366 int j = 0; |
3938 | 1367 for (int i = 0; i < length; i += 1) { |
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1368 fd.reinitialize(this, i); |
44
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1369 if (!fd.is_static()) { |
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1370 fields_sorted[j + 0] = fd.offset(); |
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1371 fields_sorted[j + 1] = i; |
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1372 j += 2; |
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1373 } |
0 | 1374 } |
44
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1375 if (j > 0) { |
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1376 length = j; |
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1377 // _sort_Fn is defined in growableArray.hpp. |
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1378 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1379 for (int i = 0; i < length; i += 2) { |
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1380 fd.reinitialize(this, fields_sorted[i + 1]); |
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1381 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1382 cl->do_field(&fd); |
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1383 } |
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1384 } |
6197 | 1385 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1386 } |
1387 | |
1388 | |
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1389 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1390 if (array_klasses() != NULL) |
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1391 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1392 } |
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1393 |
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1394 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1395 if (array_klasses() != NULL) |
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1396 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1397 } |
1398 | |
1399 #ifdef ASSERT | |
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1400 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1401 int len = methods->length(); |
1402 for (int index = 0; index < len; index++) { | |
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1403 Method* m = methods->at(index); |
0 | 1404 assert(m->is_method(), "must be method"); |
1405 if (m->signature() == signature && m->name() == name) { | |
1406 return index; | |
1407 } | |
1408 } | |
1409 return -1; | |
1410 } | |
1411 #endif | |
1412 | |
6934 | 1413 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1414 int len = methods->length(); |
1415 // methods are sorted, so do binary search | |
1416 int l = 0; | |
1417 int h = len - 1; | |
1418 while (l <= h) { | |
1419 int mid = (l + h) >> 1; | |
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1420 Method* m = methods->at(mid); |
0 | 1421 assert(m->is_method(), "must be method"); |
1422 int res = m->name()->fast_compare(name); | |
1423 if (res == 0) { | |
6934 | 1424 return mid; |
0 | 1425 } else if (res < 0) { |
1426 l = mid + 1; | |
1427 } else { | |
1428 h = mid - 1; | |
1429 } | |
1430 } | |
6934 | 1431 return -1; |
1432 } | |
1433 | |
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1434 // find_method looks up the name/signature in the local methods array |
6934 | 1435 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1436 return find_method_impl(name, signature, false); |
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1437 } |
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1438 |
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1439 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
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1440 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass); |
6934 | 1441 } |
1442 | |
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1443 // find_instance_method looks up the name/signature in the local methods array |
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1444 // and skips over static methods |
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1445 Method* InstanceKlass::find_instance_method( |
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1446 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1447 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1448 if (meth != NULL && meth->is_static()) { |
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|
1449 meth = NULL; |
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|
1450 } |
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1451 return meth; |
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|
1452 } |
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|
1453 |
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1454 // find_method looks up the name/signature in the local methods array |
6934 | 1455 Method* InstanceKlass::find_method( |
1456 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1457 return InstanceKlass::find_method_impl(methods, name, signature, false); |
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1458 } |
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1459 |
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1460 Method* InstanceKlass::find_method_impl( |
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1461 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
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1462 int hit = find_method_index(methods, name, signature, skipping_overpass); |
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1463 return hit >= 0 ? methods->at(hit): NULL; |
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1464 } |
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1465 |
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1466 // Used directly for default_methods to find the index into the |
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1467 // default_vtable_indices, and indirectly by find_method |
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1468 // find_method_index looks in the local methods array to return the index |
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1469 // of the matching name/signature. If, overpass methods are being ignored, |
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1470 // the search continues to find a potential non-overpass match. This capability |
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1471 // is important during method resolution to prefer a static method, for example, |
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|
1472 // over an overpass method. |
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1473 int InstanceKlass::find_method_index( |
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|
1474 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
6934 | 1475 int hit = binary_search(methods, name); |
1476 if (hit != -1) { | |
1477 Method* m = methods->at(hit); | |
1478 // Do linear search to find matching signature. First, quick check | |
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1479 // for common case, ignoring overpasses if requested. |
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1480 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return hit; |
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1481 |
6934 | 1482 // search downwards through overloaded methods |
1483 int i; | |
1484 for (i = hit - 1; i >= 0; --i) { | |
1485 Method* m = methods->at(i); | |
1486 assert(m->is_method(), "must be method"); | |
1487 if (m->name() != name) break; | |
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1488 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1489 } |
1490 // search upwards | |
1491 for (i = hit + 1; i < methods->length(); ++i) { | |
1492 Method* m = methods->at(i); | |
1493 assert(m->is_method(), "must be method"); | |
1494 if (m->name() != name) break; | |
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1495 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1496 } |
1497 // not found | |
0 | 1498 #ifdef ASSERT |
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1499 int index = skipping_overpass ? -1 : linear_search(methods, name, signature); |
6934 | 1500 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1501 #endif |
6934 | 1502 } |
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1503 return -1; |
0 | 1504 } |
6934 | 1505 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1506 return find_method_by_name(methods(), name, end); | |
1507 } | |
1508 | |
1509 int InstanceKlass::find_method_by_name( | |
1510 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1511 assert(end_ptr != NULL, "just checking"); | |
1512 int start = binary_search(methods, name); | |
1513 int end = start + 1; | |
1514 if (start != -1) { | |
1515 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1516 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1517 *end_ptr = end; | |
1518 return start; | |
1519 } | |
1520 return -1; | |
1521 } | |
1522 | |
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|
1523 // uncached_lookup_method searches both the local class methods array and all |
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1524 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1525 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1526 MethodLookupMode lookup_mode = mode; |
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1527 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1528 while (klass != NULL) { |
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1529 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1530 if (method != NULL) { |
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|
1531 return method; |
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|
1532 } |
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1533 klass = InstanceKlass::cast(klass)->super(); |
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1534 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1535 } |
1536 return NULL; | |
1537 } | |
1538 | |
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1539 // lookup a method in the default methods list then in all transitive interfaces |
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1540 // Do NOT return private or static methods |
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1541 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1542 Symbol* signature) const { |
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|
1543 Method* m = NULL; |
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|
1544 if (default_methods() != NULL) { |
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1545 m = find_method(default_methods(), name, signature); |
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|
1546 } |
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|
1547 // Look up interfaces |
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1548 if (m == NULL) { |
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1549 m = lookup_method_in_all_interfaces(name, signature, normal); |
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1550 } |
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|
1551 return m; |
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|
1552 } |
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|
1553 |
0 | 1554 // lookup a method in all the interfaces that this class implements |
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|
1555 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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|
1556 // They should only be found in the initial InterfaceMethodRef |
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|
1557 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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|
1558 Symbol* signature, |
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|
1559 MethodLookupMode mode) const { |
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|
1560 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1561 int num_ifs = all_ifs->length(); |
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1562 InstanceKlass *ik = NULL; |
0 | 1563 for (int i = 0; i < num_ifs; i++) { |
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1564 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1565 Method* m = ik->lookup_method(name, signature); |
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|
1566 if (m != NULL && m->is_public() && !m->is_static() && |
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|
1567 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1568 return m; |
1569 } | |
1570 } | |
1571 return NULL; | |
1572 } | |
1573 | |
1574 /* jni_id_for_impl for jfieldIds only */ | |
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|
1575 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1576 MutexLocker ml(JfieldIdCreation_lock); |
1577 // Retry lookup after we got the lock | |
1578 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1579 if (probe == NULL) { | |
1580 // Slow case, allocate new static field identifier | |
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|
1581 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1582 this_oop->set_jni_ids(probe); |
1583 } | |
1584 return probe; | |
1585 } | |
1586 | |
1587 | |
1588 /* jni_id_for for jfieldIds only */ | |
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1589 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1590 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1591 if (probe == NULL) { | |
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|
1592 probe = jni_id_for_impl(this, offset); |
0 | 1593 } |
1594 return probe; | |
1595 } | |
1596 | |
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1597 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1598 Array<jushort>* inner_class_list = inner_classes(); |
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|
1599 if (inner_class_list == NULL) { |
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|
1600 return 0; |
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|
1601 } |
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|
1602 int length = inner_class_list->length(); |
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|
1603 if (length % inner_class_next_offset == 0) { |
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|
1604 return 0; |
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|
1605 } else { |
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|
1606 int index = length - enclosing_method_attribute_size; |
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1607 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1608 return inner_class_list->at(index + offset); |
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1609 } |
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1610 } |
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1611 |
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1612 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1613 u2 method_index) { |
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1614 Array<jushort>* inner_class_list = inner_classes(); |
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1615 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1616 int length = inner_class_list->length(); |
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1617 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1618 int index = length - enclosing_method_attribute_size; |
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1619 inner_class_list->at_put( |
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1620 index + enclosing_method_class_index_offset, class_index); |
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1621 inner_class_list->at_put( |
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1622 index + enclosing_method_method_index_offset, method_index); |
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1623 } |
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1624 } |
0 | 1625 |
1626 // Lookup or create a jmethodID. | |
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1627 // This code is called by the VMThread and JavaThreads so the |
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1628 // locking has to be done very carefully to avoid deadlocks |
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1629 // and/or other cache consistency problems. |
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1630 // |
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1631 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1632 size_t idnum = (size_t)method_h->method_idnum(); |
1633 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1634 size_t length = 0; | |
1635 jmethodID id = NULL; | |
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1636 |
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1637 // We use a double-check locking idiom here because this cache is |
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1638 // performance sensitive. In the normal system, this cache only |
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1639 // transitions from NULL to non-NULL which is safe because we use |
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1640 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1641 // A partially constructed cache should never be seen by a racing |
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1642 // thread. We also use release_store_ptr() to save a new jmethodID |
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1643 // in the cache so a partially constructed jmethodID should never be |
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1644 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1645 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1646 // creation of the cache itself requires no leaks so a lock is |
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1647 // generally acquired in those two cases. |
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1648 // |
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1649 // If the RedefineClasses() API has been used, then this cache can |
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1650 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1651 // Cache creation requires no leaks and we require safety between all |
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1652 // cache accesses and freeing of the old cache so a lock is generally |
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1653 // acquired when the RedefineClasses() API has been used. |
0 | 1654 |
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1655 if (jmeths != NULL) { |
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1656 // the cache already exists |
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1657 if (!ik_h->idnum_can_increment()) { |
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1658 // the cache can't grow so we can just get the current values |
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1659 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1660 } else { |
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1661 // cache can grow so we have to be more careful |
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1662 if (Threads::number_of_threads() == 0 || |
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1663 SafepointSynchronize::is_at_safepoint()) { |
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1664 // we're single threaded or at a safepoint - no locking needed |
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1665 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1666 } else { |
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1667 MutexLocker ml(JmethodIdCreation_lock); |
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1668 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1669 } |
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1670 } |
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1671 } |
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1672 // implied else: |
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1673 // we need to allocate a cache so default length and id values are good |
0 | 1674 |
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1675 if (jmeths == NULL || // no cache yet |
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1676 length <= idnum || // cache is too short |
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1677 id == NULL) { // cache doesn't contain entry |
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1678 |
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1679 // This function can be called by the VMThread so we have to do all |
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1680 // things that might block on a safepoint before grabbing the lock. |
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1681 // Otherwise, we can deadlock with the VMThread or have a cache |
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1682 // consistency issue. These vars keep track of what we might have |
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1683 // to free after the lock is dropped. |
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1684 jmethodID to_dealloc_id = NULL; |
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1685 jmethodID* to_dealloc_jmeths = NULL; |
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1686 |
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1687 // may not allocate new_jmeths or use it if we allocate it |
0 | 1688 jmethodID* new_jmeths = NULL; |
1689 if (length <= idnum) { | |
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1690 // allocate a new cache that might be used |
0 | 1691 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1692 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1693 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1694 // cache size is stored in element[0], other elements offset by one |
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1695 new_jmeths[0] = (jmethodID)size; |
0 | 1696 } |
1697 | |
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1698 // allocate a new jmethodID that might be used |
0 | 1699 jmethodID new_id = NULL; |
1700 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1701 // The method passed in is old (but not obsolete), we need to use the current version | |
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1702 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1703 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1704 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1705 } else { |
1706 // It is the current version of the method or an obsolete method, | |
1707 // use the version passed in | |
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1708 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1709 } |
1710 | |
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1711 if (Threads::number_of_threads() == 0 || |
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1712 SafepointSynchronize::is_at_safepoint()) { |
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1713 // we're single threaded or at a safepoint - no locking needed |
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1714 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1715 &to_dealloc_id, &to_dealloc_jmeths); |
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1716 } else { |
0 | 1717 MutexLocker ml(JmethodIdCreation_lock); |
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1718 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1719 &to_dealloc_id, &to_dealloc_jmeths); |
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1720 } |
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1721 |
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1722 // The lock has been dropped so we can free resources. |
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1723 // Free up either the old cache or the new cache if we allocated one. |
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1724 if (to_dealloc_jmeths != NULL) { |
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1725 FreeHeap(to_dealloc_jmeths); |
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1726 } |
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1727 // free up the new ID since it wasn't needed |
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1728 if (to_dealloc_id != NULL) { |
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1729 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1730 } |
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|
1731 } |
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1732 return id; |
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1733 } |
0 | 1734 |
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1735 |
977
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1736 // Common code to fetch the jmethodID from the cache or update the |
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1737 // cache with the new jmethodID. This function should never do anything |
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1738 // that causes the caller to go to a safepoint or we can deadlock with |
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1739 // the VMThread or have cache consistency issues. |
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1740 // |
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1741 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1742 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1743 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1744 jmethodID** to_dealloc_jmeths_p) { |
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1745 assert(new_id != NULL, "sanity check"); |
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1746 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1747 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1748 assert(Threads::number_of_threads() == 0 || |
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1749 SafepointSynchronize::is_at_safepoint() || |
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1750 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1751 |
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1752 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1753 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
977
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1754 jmethodID id = NULL; |
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1755 size_t length = 0; |
0 | 1756 |
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1757 if (jmeths == NULL || // no cache yet |
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1758 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
49
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1759 if (jmeths != NULL) { |
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1760 // copy any existing entries from the old cache |
49
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1761 for (size_t index = 0; index < length; index++) { |
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1762 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1763 } |
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1764 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1765 } |
49
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1766 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1767 } else { |
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1768 // fetch jmethodID (if any) from the existing cache |
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1769 id = jmeths[idnum+1]; |
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1770 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
49
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1771 } |
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1772 if (id == NULL) { |
977
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1773 // No matching jmethodID in the existing cache or we have a new |
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1774 // cache or we just grew the cache. This cache write is done here |
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1775 // by the first thread to win the foot race because a jmethodID |
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1776 // needs to be unique once it is generally available. |
49
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1777 id = new_id; |
977
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1778 |
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1779 // The jmethodID cache can be read while unlocked so we have to |
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1780 // make sure the new jmethodID is complete before installing it |
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1781 // in the cache. |
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1782 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1783 } else { |
977
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1784 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1785 } |
1786 return id; | |
1787 } | |
1788 | |
1789 | |
977
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1790 // Common code to get the jmethodID cache length and the jmethodID |
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1791 // value at index idnum if there is one. |
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1792 // |
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1793 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1794 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1795 assert(cache != NULL, "sanity check"); |
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1796 assert(length_p != NULL, "sanity check"); |
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1797 assert(id_p != NULL, "sanity check"); |
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1798 |
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1799 // cache size is stored in element[0], other elements offset by one |
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1800 *length_p = (size_t)cache[0]; |
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1801 if (*length_p <= idnum) { // cache is too short |
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1802 *id_p = NULL; |
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1803 } else { |
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1804 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1805 } |
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1806 } |
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1807 |
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1808 |
0 | 1809 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1810 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1811 size_t idnum = (size_t)method->method_idnum(); |
1812 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1813 size_t length; // length assigned as debugging crumb | |
1814 jmethodID id = NULL; | |
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1815 if (jmeths != NULL && // If there is a cache |
0 | 1816 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1817 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1818 } | |
1819 return id; | |
1820 } | |
1821 | |
1822 | |
1823 // | |
1824 // Walk the list of dependent nmethods searching for nmethods which | |
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1825 // are dependent on the changes that were passed in and mark them for |
0 | 1826 // deoptimization. Returns the number of nmethods found. |
1827 // | |
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1828 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1829 assert_locked_or_safepoint(CodeCache_lock); |
1830 int found = 0; | |
1831 nmethodBucket* b = _dependencies; | |
1832 while (b != NULL) { | |
1833 nmethod* nm = b->get_nmethod(); | |
1834 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1835 // the dependency list may contain nmethods which aren't alive. | |
1836 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1837 if (TraceDependencies) { | |
1838 ResourceMark rm; | |
1839 tty->print_cr("Marked for deoptimization"); | |
1840 tty->print_cr(" context = %s", this->external_name()); | |
1841 changes.print(); | |
1842 nm->print(); | |
1843 nm->print_dependencies(); | |
1844 } | |
1845 nm->mark_for_deoptimization(); | |
1846 found++; | |
1847 } | |
1848 b = b->next(); | |
1849 } | |
1850 return found; | |
1851 } | |
1852 | |
1853 | |
1854 // | |
1855 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1856 // It's possible that an nmethod has multiple dependencies on this klass | |
1857 // so a count is kept for each bucket to guarantee that creation and | |
1858 // deletion of dependencies is consistent. | |
1859 // | |
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1860 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1861 assert_locked_or_safepoint(CodeCache_lock); |
1862 nmethodBucket* b = _dependencies; | |
1863 nmethodBucket* last = NULL; | |
1864 while (b != NULL) { | |
1865 if (nm == b->get_nmethod()) { | |
1866 b->increment(); | |
1867 return; | |
1868 } | |
1869 b = b->next(); | |
1870 } | |
1871 _dependencies = new nmethodBucket(nm, _dependencies); | |
1872 } | |
1873 | |
1874 | |
1875 // | |
1876 // Decrement count of the nmethod in the dependency list and remove | |
1877 // the bucket competely when the count goes to 0. This method must | |
1878 // find a corresponding bucket otherwise there's a bug in the | |
1879 // recording of dependecies. | |
1880 // | |
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1881 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1882 assert_locked_or_safepoint(CodeCache_lock); |
1883 nmethodBucket* b = _dependencies; | |
1884 nmethodBucket* last = NULL; | |
1885 while (b != NULL) { | |
1886 if (nm == b->get_nmethod()) { | |
1887 if (b->decrement() == 0) { | |
1888 if (last == NULL) { | |
1889 _dependencies = b->next(); | |
1890 } else { | |
1891 last->set_next(b->next()); | |
1892 } | |
1893 delete b; | |
1894 } | |
1895 return; | |
1896 } | |
1897 last = b; | |
1898 b = b->next(); | |
1899 } | |
1900 #ifdef ASSERT | |
1901 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1902 nm->print(); | |
1903 #endif // ASSERT | |
1904 ShouldNotReachHere(); | |
1905 } | |
1906 | |
1907 | |
1908 #ifndef PRODUCT | |
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1909 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1910 nmethodBucket* b = _dependencies; |
1911 int idx = 0; | |
1912 while (b != NULL) { | |
1913 nmethod* nm = b->get_nmethod(); | |
1914 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1915 if (!verbose) { | |
1916 nm->print_on(tty, "nmethod"); | |
1917 tty->print_cr(" } "); | |
1918 } else { | |
1919 nm->print(); | |
1920 nm->print_dependencies(); | |
1921 tty->print_cr("--- } "); | |
1922 } | |
1923 b = b->next(); | |
1924 } | |
1925 } | |
1926 | |
1927 | |
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1928 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1929 nmethodBucket* b = _dependencies; |
1930 while (b != NULL) { | |
1931 if (nm == b->get_nmethod()) { | |
1932 return true; | |
1933 } | |
1934 b = b->next(); | |
1935 } | |
1936 return false; | |
1937 } | |
1938 #endif //PRODUCT | |
1939 | |
1940 | |
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1941 // Garbage collection |
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1942 |
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1943 #ifdef ASSERT |
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1944 template <class T> void assert_is_in(T *p) { |
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1945 T heap_oop = oopDesc::load_heap_oop(p); |
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1946 if (!oopDesc::is_null(heap_oop)) { |
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1947 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1948 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1949 } |
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1950 } |
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1951 template <class T> void assert_is_in_closed_subset(T *p) { |
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1952 T heap_oop = oopDesc::load_heap_oop(p); |
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1953 if (!oopDesc::is_null(heap_oop)) { |
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1954 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1955 assert(Universe::heap()->is_in_closed_subset(o), |
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1956 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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1957 } |
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1958 } |
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1959 template <class T> void assert_is_in_reserved(T *p) { |
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1960 T heap_oop = oopDesc::load_heap_oop(p); |
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1961 if (!oopDesc::is_null(heap_oop)) { |
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1962 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1963 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1964 } |
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1965 } |
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1966 template <class T> void assert_nothing(T *p) {} |
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1967 |
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1968 #else |
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1969 template <class T> void assert_is_in(T *p) {} |
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1970 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1971 template <class T> void assert_is_in_reserved(T *p) {} |
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1972 template <class T> void assert_nothing(T *p) {} |
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1973 #endif // ASSERT |
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1974 |
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1975 // |
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1976 // Macros that iterate over areas of oops which are specialized on type of |
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1977 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1978 // |
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1979 // Parameters are: |
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1980 // T - type of oop to point to (either oop or narrowOop) |
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1981 // start_p - starting pointer for region to iterate over |
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1982 // count - number of oops or narrowOops to iterate over |
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1983 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1984 // makes it more efficient to put in a macro rather than making |
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1985 // it a template function) |
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1986 // assert_fn - assert function which is template function because performance |
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1987 // doesn't matter when enabled. |
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1988 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1989 T, start_p, count, do_oop, \ |
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1990 assert_fn) \ |
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1991 { \ |
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1992 T* p = (T*)(start_p); \ |
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1993 T* const end = p + (count); \ |
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1994 while (p < end) { \ |
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1995 (assert_fn)(p); \ |
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1996 do_oop; \ |
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1997 ++p; \ |
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1998 } \ |
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1999 } |
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2000 |
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2001 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2002 T, start_p, count, do_oop, \ |
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2003 assert_fn) \ |
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2004 { \ |
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2005 T* const start = (T*)(start_p); \ |
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2006 T* p = start + (count); \ |
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2007 while (start < p) { \ |
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2008 --p; \ |
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2009 (assert_fn)(p); \ |
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2010 do_oop; \ |
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2011 } \ |
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2012 } |
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2013 |
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2014 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2015 T, start_p, count, low, high, \ |
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2016 do_oop, assert_fn) \ |
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2017 { \ |
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2018 T* const l = (T*)(low); \ |
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2019 T* const h = (T*)(high); \ |
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2020 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2021 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2022 "bounded region must be properly aligned"); \ |
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2023 T* p = (T*)(start_p); \ |
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2024 T* end = p + (count); \ |
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2025 if (p < l) p = l; \ |
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2026 if (end > h) end = h; \ |
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2027 while (p < end) { \ |
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2028 (assert_fn)(p); \ |
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2029 do_oop; \ |
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2030 ++p; \ |
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2031 } \ |
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2032 } |
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2033 |
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2034 |
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2035 // The following macros call specialized macros, passing either oop or |
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2036 // narrowOop as the specialization type. These test the UseCompressedOops |
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2037 // flag. |
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2038 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2039 { \ |
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2040 /* Compute oopmap block range. The common case \ |
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2041 is nonstatic_oop_map_size == 1. */ \ |
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2042 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2043 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2044 if (UseCompressedOops) { \ |
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2045 while (map < end_map) { \ |
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2046 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2047 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2048 do_oop, assert_fn) \ |
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2049 ++map; \ |
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2050 } \ |
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2051 } else { \ |
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2052 while (map < end_map) { \ |
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2053 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2054 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2055 do_oop, assert_fn) \ |
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2056 ++map; \ |
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2057 } \ |
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2058 } \ |
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2059 } |
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2060 |
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2061 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2062 { \ |
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2063 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2064 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2065 if (UseCompressedOops) { \ |
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2066 while (start_map < map) { \ |
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2067 --map; \ |
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2068 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2069 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2070 do_oop, assert_fn) \ |
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2071 } \ |
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2072 } else { \ |
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2073 while (start_map < map) { \ |
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2074 --map; \ |
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2075 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2076 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2077 do_oop, assert_fn) \ |
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2078 } \ |
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2079 } \ |
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2080 } |
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2081 |
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2082 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2083 assert_fn) \ |
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2084 { \ |
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2085 /* Compute oopmap block range. The common case is \ |
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2086 nonstatic_oop_map_size == 1, so we accept the \ |
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2087 usually non-existent extra overhead of examining \ |
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2088 all the maps. */ \ |
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2089 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2090 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2091 if (UseCompressedOops) { \ |
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2092 while (map < end_map) { \ |
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2093 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2094 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2095 low, high, \ |
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2096 do_oop, assert_fn) \ |
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2097 ++map; \ |
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2098 } \ |
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2099 } else { \ |
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2100 while (map < end_map) { \ |
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2101 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2102 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2103 low, high, \ |
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2104 do_oop, assert_fn) \ |
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2105 ++map; \ |
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2106 } \ |
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2107 } \ |
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2108 } |
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2109 |
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2110 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2111 assert(obj != NULL, "can't follow the content of NULL object"); |
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2112 MarkSweep::follow_klass(obj->klass()); |
113
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2113 InstanceKlass_OOP_MAP_ITERATE( \ |
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2114 obj, \ |
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2115 MarkSweep::mark_and_push(p), \ |
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2116 assert_is_in_closed_subset) |
0 | 2117 } |
2118 | |
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2119 #if INCLUDE_ALL_GCS |
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2120 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2121 oop obj) { |
113
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2122 assert(obj != NULL, "can't follow the content of NULL object"); |
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2123 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2124 // Only mark the header and let the scan of the meta-data mark |
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2125 // everything else. |
113
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2126 InstanceKlass_OOP_MAP_ITERATE( \ |
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2127 obj, \ |
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2128 PSParallelCompact::mark_and_push(cm, p), \ |
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2129 assert_is_in) |
0 | 2130 } |
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2131 #endif // INCLUDE_ALL_GCS |
0 | 2132 |
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2133 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2134 // applied to the klass ptr in the object header. |
2135 | |
342
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2136 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2137 \ |
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2138 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2139 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2140 /* header */ \ |
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2141 if_do_metadata_checked(closure, nv_suffix) { \ |
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2142 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2143 } \ |
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2144 InstanceKlass_OOP_MAP_ITERATE( \ |
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2145 obj, \ |
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2146 SpecializationStats:: \ |
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2147 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2148 (closure)->do_oop##nv_suffix(p), \ |
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2149 assert_is_in_closed_subset) \ |
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2150 return size_helper(); \ |
0 | 2151 } |
2152 | |
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2153 #if INCLUDE_ALL_GCS |
342
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2154 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2155 \ |
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2156 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2157 OopClosureType* closure) { \ |
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2158 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2159 \ |
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2160 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2161 \ |
342
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2162 /* instance variables */ \ |
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2163 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2164 obj, \ |
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2165 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2166 (closure)->do_oop##nv_suffix(p), \ |
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2167 assert_is_in_closed_subset) \ |
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2168 return size_helper(); \ |
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2169 } |
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2170 #endif // INCLUDE_ALL_GCS |
342
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2171 |
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2172 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2173 \ |
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2174 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2175 OopClosureType* closure, \ |
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2176 MemRegion mr) { \ |
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2177 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2178 if_do_metadata_checked(closure, nv_suffix) { \ |
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2179 if (mr.contains(obj)) { \ |
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2180 closure->do_klass##nv_suffix(obj->klass()); \ |
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2181 } \ |
113
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2182 } \ |
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2183 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2184 obj, mr.start(), mr.end(), \ |
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2185 (closure)->do_oop##nv_suffix(p), \ |
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2186 assert_is_in_closed_subset) \ |
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2187 return size_helper(); \ |
0 | 2188 } |
2189 | |
2190 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2191 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2192 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2193 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2194 #if INCLUDE_ALL_GCS |
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2195 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2196 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2197 #endif // INCLUDE_ALL_GCS |
0 | 2198 |
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2199 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2200 int size = size_helper(); |
113
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2201 InstanceKlass_OOP_MAP_ITERATE( \ |
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2202 obj, \ |
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2203 MarkSweep::adjust_pointer(p), \ |
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2204 assert_is_in) |
0 | 2205 return size; |
2206 } | |
2207 | |
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2208 #if INCLUDE_ALL_GCS |
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2209 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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2210 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2211 obj, \ |
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2212 if (PSScavenge::should_scavenge(p)) { \ |
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2213 pm->claim_or_forward_depth(p); \ |
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2214 }, \ |
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2215 assert_nothing ) |
0 | 2216 } |
2217 | |
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2218 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2219 int size = size_helper(); |
113
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2220 InstanceKlass_OOP_MAP_ITERATE( \ |
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2221 obj, \ |
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2222 PSParallelCompact::adjust_pointer(p), \ |
6725
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2223 assert_is_in) |
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2224 return size; |
0 | 2225 } |
2226 | |
8001
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|
2227 #endif // INCLUDE_ALL_GCS |
0 | 2228 |
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2229 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2230 assert(is_loader_alive(is_alive), "this klass should be live"); |
5998
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2231 if (is_interface()) { |
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|
2232 if (ClassUnloading) { |
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2233 Klass* impl = implementor(); |
5998
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2234 if (impl != NULL) { |
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2235 if (!impl->is_loader_alive(is_alive)) { |
5998
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|
2236 // remove this guy |
8693
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|
2237 Klass** klass = adr_implementor(); |
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|
2238 assert(klass != NULL, "null klass"); |
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|
2239 if (klass != NULL) { |
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|
2240 *klass = NULL; |
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|
2241 } |
5998
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|
2242 } |
0 | 2243 } |
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2244 } |
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|
2245 } |
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|
2246 } |
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|
2247 |
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|
2248 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2249 for (int m = 0; m < methods()->length(); m++) { |
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2250 MethodData* mdo = methods()->at(m)->method_data(); |
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2251 if (mdo != NULL) { |
17728
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
2252 mdo->clean_method_data(is_alive); |
0 | 2253 } |
2254 } | |
6725
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2255 } |
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|
2256 |
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|
2257 |
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|
2258 static void remove_unshareable_in_class(Klass* k) { |
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|
2259 // remove klass's unshareable info |
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|
2260 k->remove_unshareable_info(); |
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|
2261 } |
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|
2262 |
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|
2263 void InstanceKlass::remove_unshareable_info() { |
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|
2264 Klass::remove_unshareable_info(); |
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|
2265 // Unlink the class |
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|
2266 if (is_linked()) { |
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|
2267 unlink_class(); |
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|
2268 } |
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|
2269 init_implementor(); |
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|
2270 |
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|
2271 constants()->remove_unshareable_info(); |
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|
2272 |
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|
2273 for (int i = 0; i < methods()->length(); i++) { |
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|
2274 Method* m = methods()->at(i); |
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|
2275 m->remove_unshareable_info(); |
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|
2276 } |
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|
2277 |
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|
2278 // do array classes also. |
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|
2279 array_klasses_do(remove_unshareable_in_class); |
0 | 2280 } |
2281 | |
6725
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|
2282 void restore_unshareable_in_class(Klass* k, TRAPS) { |
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|
2283 k->restore_unshareable_info(CHECK); |
0 | 2284 } |
2285 | |
6725
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|
2286 void InstanceKlass::restore_unshareable_info(TRAPS) { |
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|
2287 Klass::restore_unshareable_info(CHECK); |
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|
2288 instanceKlassHandle ik(THREAD, this); |
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|
2289 |
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|
2290 Array<Method*>* methods = ik->methods(); |
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|
2291 int num_methods = methods->length(); |
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|
2292 for (int index2 = 0; index2 < num_methods; ++index2) { |
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|
2293 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
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|
2294 m->restore_unshareable_info(CHECK); |
6725
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|
2295 } |
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|
2296 if (JvmtiExport::has_redefined_a_class()) { |
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|
2297 // Reinitialize vtable because RedefineClasses may have changed some |
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|
2298 // entries in this vtable for super classes so the CDS vtable might |
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6964458: Reimplement class meta-data storage to use native memory
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|
2299 // point to old or obsolete entries. RedefineClasses doesn't fix up |
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|
2300 // vtables in the shared system dictionary, only the main one. |
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6964458: Reimplement class meta-data storage to use native memory
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|
2301 // It also redefines the itable too so fix that too. |
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6964458: Reimplement class meta-data storage to use native memory
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|
2302 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2303 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2304 ik->itable()->initialize_itable(false, CHECK); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2305 } |
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|
2306 |
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6964458: Reimplement class meta-data storage to use native memory
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|
2307 // restore constant pool resolved references |
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|
2308 ik->constants()->restore_unshareable_info(CHECK); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2309 |
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|
2310 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
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|
2311 } |
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|
2312 |
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|
2313 static void clear_all_breakpoints(Method* m) { |
0 | 2314 m->clear_all_breakpoints(); |
2315 } | |
2316 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2317 |
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|
2318 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2319 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2320 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2321 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2322 } |
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8011803: release_C_heap_structures is never called for anonymous classes.
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|
2323 |
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8011803: release_C_heap_structures is never called for anonymous classes.
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|
2324 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2325 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2326 } |
d587a5c30bd8
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|
2327 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2328 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2329 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2330 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2331 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2332 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2333 |
6725
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|
2334 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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10133
diff
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|
2335 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2336 // Can't release the constant pool here because the constant pool can be |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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diff
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|
2337 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
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10133
diff
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|
2338 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
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|
2339 |
0 | 2340 // Deallocate oop map cache |
2341 if (_oop_map_cache != NULL) { | |
2342 delete _oop_map_cache; | |
2343 _oop_map_cache = NULL; | |
2344 } | |
2345 | |
2346 // Deallocate JNI identifiers for jfieldIDs | |
2347 JNIid::deallocate(jni_ids()); | |
2348 set_jni_ids(NULL); | |
2349 | |
2350 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2351 if (jmeths != (jmethodID*)NULL) { | |
2352 release_set_methods_jmethod_ids(NULL); | |
2353 FreeHeap(jmeths); | |
2354 } | |
2355 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2356 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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diff
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|
2357 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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changeset
|
2358 Mutex* lock_or_null = SafepointSynchronize::is_at_safepoint() ? NULL : MemberNameTable_lock; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
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diff
changeset
|
2359 MutexLockerEx ml(lock_or_null, Mutex::_no_safepoint_check_flag); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
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10345
diff
changeset
|
2360 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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diff
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|
2361 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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diff
changeset
|
2362 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
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diff
changeset
|
2363 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
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diff
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|
2364 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2365 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2366 |
0 | 2367 // release dependencies |
2368 nmethodBucket* b = _dependencies; | |
2369 _dependencies = NULL; | |
2370 while (b != NULL) { | |
2371 nmethodBucket* next = b->next(); | |
2372 delete b; | |
2373 b = next; | |
2374 } | |
2375 | |
2376 // Deallocate breakpoint records | |
2377 if (breakpoints() != 0x0) { | |
2378 methods_do(clear_all_breakpoints); | |
2379 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2380 } | |
2381 | |
2382 // deallocate information about previous versions | |
2383 if (_previous_versions != NULL) { | |
2384 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2385 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2386 delete pv_node; | |
2387 } | |
2388 delete _previous_versions; | |
2389 _previous_versions = NULL; | |
2390 } | |
2391 | |
2392 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2393 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2394 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2395 _cached_class_file = NULL; |
0 | 2396 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2397 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2398 // 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
|
2399 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2400 // 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
|
2401 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2402 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
|
2403 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
|
2404 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2405 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2406 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2407 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2408 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2409 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
|
2410 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2411 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2412 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2413 // 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
|
2414 // 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
|
2415 // 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
|
2416 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2417 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2418 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
|
2419 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2420 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2421 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2422 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2423 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2424 } |
0 | 2425 } |
2426 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2427 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2428 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
|
2429 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2430 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2431 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2432 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2433 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2434 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2435 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2436 // 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
|
2437 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2438 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2439 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
|
2440 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2441 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2442 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2443 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2444 // Get the internal name as a c string |
0 | 2445 const char* src = (const char*) (name()->as_C_string()); |
2446 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2447 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2448 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
|
2449 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2450 // Add L as type indicator |
0 | 2451 int dest_index = 0; |
2452 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2453 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2454 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2455 for (int src_index = 0; src_index < src_length; ) { |
0 | 2456 dest[dest_index++] = src[src_index++]; |
2457 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2458 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2459 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2460 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2461 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2462 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2463 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2464 // Add the semicolon and the NULL |
0 | 2465 dest[dest_index++] = ';'; |
2466 dest[dest_index] = '\0'; | |
2467 return dest; | |
2468 } | |
2469 | |
2470 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2471 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2472 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2473 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2474 Symbol* classname1 = class1->name(); |
2475 | |
2476 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2477 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2478 } |
2479 oop classloader2; | |
6983 | 2480 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2481 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2482 } else { |
6983 | 2483 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2484 classloader2 = NULL; |
2485 } | |
6983 | 2486 Symbol* classname2 = class2->name(); |
0 | 2487 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2488 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2489 classloader2, classname2); |
2490 } | |
2491 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2492 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
|
2493 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2494 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2495 Symbol* classname1 = class1->name(); |
0 | 2496 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2497 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2498 classloader2, classname2); |
2499 } | |
2500 | |
2501 // return true if two classes are in the same package, classloader | |
2502 // 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
|
2503 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
|
2504 oop class_loader2, Symbol* class_name2) { |
0 | 2505 if (class_loader1 != class_loader2) { |
2506 return false; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2507 } else if (class_name1 == class_name2) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2508 return true; // skip painful bytewise comparison |
0 | 2509 } else { |
2510 ResourceMark rm; | |
2511 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2512 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2513 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2514 // Otherwise, we just compare jbyte values between the strings. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2515 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2516 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2517 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2518 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2519 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2520 |
2521 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2522 // One of the two doesn't have a package. Only return true | |
2523 // if the other one also doesn't have a package. | |
2524 return last_slash1 == last_slash2; | |
2525 } else { | |
2526 // Skip over '['s | |
2527 if (*name1 == '[') { | |
2528 do { | |
2529 name1++; | |
2530 } while (*name1 == '['); | |
2531 if (*name1 != 'L') { | |
2532 // Something is terribly wrong. Shouldn't be here. | |
2533 return false; | |
2534 } | |
2535 } | |
2536 if (*name2 == '[') { | |
2537 do { | |
2538 name2++; | |
2539 } while (*name2 == '['); | |
2540 if (*name2 != 'L') { | |
2541 // Something is terribly wrong. Shouldn't be here. | |
2542 return false; | |
2543 } | |
2544 } | |
2545 | |
2546 // Check that package part is identical | |
2547 int length1 = last_slash1 - name1; | |
2548 int length2 = last_slash2 - name2; | |
2549 | |
2550 return UTF8::equal(name1, length1, name2, length2); | |
2551 } | |
2552 } | |
2553 } | |
2554 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2555 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2556 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2557 // Assumes name-signature match |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2558 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2559 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2560 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2561 // Private methods can not be overridden |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2562 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2563 return false; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2564 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2565 // If super method is accessible, then override |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2566 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2567 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2568 return true; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2569 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2570 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2571 assert(super_method->is_package_private(), "must be package private"); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2572 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2573 } |
0 | 2574 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2575 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2576 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2577 Symbol*& simple_name_result, TRAPS) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2578 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2579 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2580 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2581 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2582 // tell if two classes have the same enclosing class (at package level) |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2583 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2584 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2585 if (class2_oop == class1()) return true; |
6983 | 2586 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2587 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2588 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2589 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2590 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2591 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2592 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2593 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2594 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2595 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2596 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2597 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2598 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2599 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2600 bool ignore_inner_is_member; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2601 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
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|
2602 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2603 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2604 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2605 outer1 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2606 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
2607 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2608 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2609 instanceKlassHandle outer2 = class2; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2610 for (;;) { |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2611 bool ignore_inner_is_member; |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2612 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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xlu
parents:
1039
diff
changeset
|
2613 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2614 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2615 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2616 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2617 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2618 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2619 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2620 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2621 // 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
|
2622 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2623 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2624 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2625 |
0 | 2626 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2627 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2628 jint access = access_flags().as_int(); |
2629 | |
2630 // 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
diff
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|
2631 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2632 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2633 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
|
2634 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2635 // 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
|
2636 // 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
|
2637 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2638 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2639 // 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
|
2640 // 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
|
2641 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2642 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
|
2643 // 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
|
2644 access = iter.inner_access_flags(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2645 break; |
0 | 2646 } |
2647 } | |
2648 // Remember to strip ACC_SUPER bit | |
2649 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2650 } | |
2651 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2652 jint InstanceKlass::jvmti_class_status() const { |
0 | 2653 jint result = 0; |
2654 | |
2655 if (is_linked()) { | |
2656 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2657 } | |
2658 | |
2659 if (is_initialized()) { | |
2660 assert(is_linked(), "Class status is not consistent"); | |
2661 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2662 } | |
2663 if (is_in_error_state()) { | |
2664 result |= JVMTI_CLASS_STATUS_ERROR; | |
2665 } | |
2666 return result; | |
2667 } | |
2668 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2669 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2670 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2671 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2672 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2673 / itableOffsetEntry::size(); | |
2674 | |
2675 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2676 // If the interface isn't implemented by the receiver class, |
0 | 2677 // the VM should throw IncompatibleClassChangeError. |
2678 if (cnt >= nof_interfaces) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2679 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2680 } |
2681 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2682 Klass* ik = ioe->interface_klass(); |
0 | 2683 if (ik == holder) break; |
2684 } | |
2685 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2686 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2687 Method* m = ime[index].method(); |
0 | 2688 if (m == NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2689 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2690 } |
2691 return m; | |
2692 } | |
2693 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2694 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2695 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2696 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2697 // 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
|
2698 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2699 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2700 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2701 int methods_length, bool* trace_name_printed) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2702 // 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
|
2703 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2704 for (int j = 0; j < methods_length; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2705 Method* old_method = old_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2706 Method* new_method = new_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2707 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2708 for (int index = 0; index < default_methods()->length(); index ++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2709 if (default_methods()->at(index) == old_method) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2710 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2711 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2712 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2713 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2714 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2715 external_name(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2716 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2717 *trace_name_printed = true; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2718 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2719 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2720 new_method->name()->as_C_string(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2721 new_method->signature()->as_C_string())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2722 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
2723 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
changeset
|
2724 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2725 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
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|
2726 } |
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8009130: Lambda: Fix access controls, loader constraints.
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12811
diff
changeset
|
2727 } |
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8009130: Lambda: Fix access controls, loader constraints.
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diff
changeset
|
2728 #endif // INCLUDE_JVMTI |
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diff
changeset
|
2729 |
0 | 2730 // On-stack replacement stuff |
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|
2731 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2732 // only one compilation can be active |
2733 NEEDS_CLEANUP | |
2734 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2735 OsrList_lock->lock_without_safepoint_check(); | |
2736 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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diff
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|
2737 n->set_osr_link(osr_nmethods_head()); |
0 | 2738 set_osr_nmethods_head(n); |
1783 | 2739 // Raise the highest osr level if necessary |
2740 if (TieredCompilation) { | |
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2741 Method* m = n->method(); |
1783 | 2742 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2743 } | |
0 | 2744 // Remember to unlock again |
2745 OsrList_lock->unlock(); | |
1783 | 2746 |
2747 // Get rid of the osr methods for the same bci that have lower levels. | |
2748 if (TieredCompilation) { | |
2749 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2750 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2751 if (inv != NULL && inv->is_in_use()) { | |
2752 inv->make_not_entrant(); | |
2753 } | |
2754 } | |
2755 } | |
0 | 2756 } |
2757 | |
2758 | |
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2759 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2760 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2761 OsrList_lock->lock_without_safepoint_check(); | |
2762 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2763 nmethod* last = NULL; | |
2764 nmethod* cur = osr_nmethods_head(); | |
1783 | 2765 int max_level = CompLevel_none; // Find the max comp level excluding n |
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2766 Method* m = n->method(); |
0 | 2767 // Search for match |
2768 while(cur != NULL && cur != n) { | |
17975
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|
2769 if (TieredCompilation && m == cur->method()) { |
1783 | 2770 // Find max level before n |
2771 max_level = MAX2(max_level, cur->comp_level()); | |
2772 } | |
0 | 2773 last = cur; |
989
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|
2774 cur = cur->osr_link(); |
0 | 2775 } |
1783 | 2776 nmethod* next = NULL; |
0 | 2777 if (cur == n) { |
1783 | 2778 next = cur->osr_link(); |
0 | 2779 if (last == NULL) { |
2780 // Remove first element | |
1783 | 2781 set_osr_nmethods_head(next); |
0 | 2782 } else { |
1783 | 2783 last->set_osr_link(next); |
0 | 2784 } |
2785 } | |
989
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|
2786 n->set_osr_link(NULL); |
1783 | 2787 if (TieredCompilation) { |
2788 cur = next; | |
2789 while (cur != NULL) { | |
2790 // Find max level after n | |
17975
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2791 if (m == cur->method()) { |
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|
2792 max_level = MAX2(max_level, cur->comp_level()); |
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|
2793 } |
1783 | 2794 cur = cur->osr_link(); |
2795 } | |
2796 m->set_highest_osr_comp_level(max_level); | |
2797 } | |
0 | 2798 // Remember to unlock again |
2799 OsrList_lock->unlock(); | |
2800 } | |
2801 | |
10265
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8003557: NPG: Klass* const k should be const Klass* k.
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10152
diff
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|
2802 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2803 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2804 OsrList_lock->lock_without_safepoint_check(); | |
2805 nmethod* osr = osr_nmethods_head(); | |
1783 | 2806 nmethod* best = NULL; |
0 | 2807 while (osr != NULL) { |
2808 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2809 // There can be a time when a c1 osr method exists but we are waiting |
2810 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2811 // the c1 version and only be able to find the c2 version. However | |
2812 // while we overflow in the c1 code at back branches we don't want to | |
2813 // try and switch to the same code as we are already running | |
2814 | |
0 | 2815 if (osr->method() == m && |
2816 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2817 if (match_level) { |
2818 if (osr->comp_level() == comp_level) { | |
2819 // Found a match - return it. | |
2820 OsrList_lock->unlock(); | |
2821 return osr; | |
2822 } | |
2823 } else { | |
2824 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2825 if (osr->comp_level() == CompLevel_highest_tier) { | |
2826 // Found the best possible - return it. | |
2827 OsrList_lock->unlock(); | |
2828 return osr; | |
2829 } | |
2830 best = osr; | |
2831 } | |
2832 } | |
0 | 2833 } |
989
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diff
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|
2834 osr = osr->osr_link(); |
0 | 2835 } |
2836 OsrList_lock->unlock(); | |
1783 | 2837 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2838 return best; | |
2839 } | |
0 | 2840 return NULL; |
2841 } | |
2842 | |
10345
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|
2843 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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diff
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|
2844 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
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diff
changeset
|
2845 MutexLocker ml(MemberNameTable_lock); |
10345
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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changeset
|
2846 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2847 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
|
2848 |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2849 if (_member_names == NULL) { |
10345
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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changeset
|
2850 _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
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|
2851 } |
10345
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changeset
|
2852 _member_names->add_member_name(index, mem_name_wref); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2853 } |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2854 |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2855 oop InstanceKlass::get_member_name(int index) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2856 MutexLocker ml(MemberNameTable_lock); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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10343
diff
changeset
|
2857 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2858 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2859 |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2860 if (_member_names == NULL) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2861 return NULL; |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2862 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2863 oop mem_name =_member_names->get_member_name(index); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2864 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
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|
2865 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2866 |
0 | 2867 // ----------------------------------------------------------------------------------------------------- |
6725
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|
2868 // Printing |
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6964458: Reimplement class meta-data storage to use native memory
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|
2869 |
0 | 2870 #ifndef PRODUCT |
2871 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2872 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2873 |
6725
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|
2874 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2875 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2876 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2877 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2878 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2879 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2880 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2881 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2882 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2883 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2884 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2885 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2886 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2887 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2888 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2889 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2890 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2891 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2892 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2893 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2894 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2895 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2896 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2897 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
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coleenp
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|
2898 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2899 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2900 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2901 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2902 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2903 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2904 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2905 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2906 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2907 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2908 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2909 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2910 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2911 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2912 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2913 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2914 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2915 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2916 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2917 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2918 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2919 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2920 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2921 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2922 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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changeset
|
2923 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2924 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2925 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2926 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2927 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2928 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2929 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2930 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2931 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2932 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2933 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2934 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2935 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2936 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2937 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2938 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2939 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2940 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2941 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2942 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2943 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2944 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2945 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2946 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2947 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2948 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2949 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2950 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2951 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2952 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2953 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2954 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2956 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2957 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2958 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2959 } |
8031 | 2960 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
2961 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
2962 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
2963 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2964 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2965 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2966 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2967 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2968 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2969 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2970 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2971 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2972 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2973 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2974 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2975 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2976 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2977 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2978 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2979 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2980 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2981 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2982 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2983 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2984 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2985 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2986 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2987 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2988 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2989 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2997 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2998 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3001 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3002 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3003 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3004 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3005 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3008 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
|
3009 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3010 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3011 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3013 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3014 |
0 | 3015 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3016 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3017 if (_obj == NULL) { |
0 | 3018 fd->print_on(_st); |
3019 _st->cr(); | |
3020 } else { | |
3021 fd->print_on_for(_st, _obj); | |
3022 _st->cr(); | |
3023 } | |
3024 } | |
3025 | |
3026 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3027 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3028 Klass::oop_print_on(obj, st); |
3029 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3030 if (this == SystemDictionary::String_klass()) { |
0 | 3031 typeArrayOop value = java_lang_String::value(obj); |
3032 juint offset = java_lang_String::offset(obj); | |
3033 juint length = java_lang_String::length(obj); | |
3034 if (value != NULL && | |
3035 value->is_typeArray() && | |
3036 offset <= (juint) value->length() && | |
3037 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3038 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3039 java_lang_String::print(obj, st); |
0 | 3040 st->cr(); |
3041 if (!WizardMode) return; // that is enough | |
3042 } | |
3043 } | |
3044 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3045 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3046 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3047 do_nonstatic_fields(&print_field); |
0 | 3048 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3049 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3050 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3051 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3052 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3053 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3054 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3055 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3056 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3057 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3058 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3059 array_klass->print_value_on_maybe_null(st); |
0 | 3060 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3061 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
|
3062 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
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3063 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
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|
3064 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3065 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
|
3066 } |
6725
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diff
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|
3067 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3068 st->print(BULLET"signature: "); |
2357
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3069 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
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jrose
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|
3070 st->cr(); |
0 | 3071 } |
3072 } | |
3073 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3074 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
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|
3075 |
6725
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|
3076 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3077 st->print("a "); |
3078 name()->print_value_on(st); | |
3079 obj->print_address_on(st); | |
6725
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|
3080 if (this == SystemDictionary::String_klass() |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3081 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
3082 ResourceMark rm; |
c89f86385056
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jrose
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diff
changeset
|
3083 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3084 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
3085 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
3086 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3087 if (len > plen) |
c89f86385056
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jrose
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diff
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|
3088 st->print("...[%d]", len); |
6725
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|
3089 } else if (this == SystemDictionary::Class_klass()) { |
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3090 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
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parents:
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diff
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|
3091 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
3092 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3093 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
3094 } else { |
c89f86385056
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diff
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|
3095 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
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|
3096 st->print("%s", tname ? tname : "type?"); |
c89f86385056
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|
3097 } |
6725
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|
3098 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
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|
3099 st->print(" = "); |
2357
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|
3100 java_lang_invoke_MethodType::print_signature(obj, st); |
665
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|
3101 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
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|
3102 st->print(" = "); |
c89f86385056
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diff
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|
3103 java_lang_boxing_object::print(obj, st); |
6725
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|
3104 } 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
|
3105 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
|
3106 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3107 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
changeset
|
3108 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
3109 } |
6725
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|
3110 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
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|
3111 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
|
3112 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3113 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3114 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
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diff
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|
3115 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3116 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:
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diff
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|
3117 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3118 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:
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|
3119 } |
665
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|
3120 } |
0 | 3121 } |
3122 | |
6725
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|
3123 const char* InstanceKlass::internal_name() const { |
0 | 3124 return external_name(); |
3125 } | |
3126 | |
7956 | 3127 #if INCLUDE_SERVICES |
3128 // Size Statistics | |
3129 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3130 Klass::collect_statistics(sz); | |
3131 | |
3132 sz->_inst_size = HeapWordSize * size_helper(); | |
3133 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3134 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3135 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3136 ((is_interface() || is_anonymous()) ? | |
3137 align_object_offset(nonstatic_oop_map_size()) : | |
3138 nonstatic_oop_map_size()); | |
3139 | |
3140 int n = 0; | |
3141 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3142 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3143 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3144 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3145 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3146 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3147 sz->_ro_bytes += n; | |
3148 | |
3149 const ConstantPool* cp = constants(); | |
3150 if (cp) { | |
3151 cp->collect_statistics(sz); | |
3152 } | |
3153 | |
3154 const Annotations* anno = annotations(); | |
3155 if (anno) { | |
3156 anno->collect_statistics(sz); | |
3157 } | |
3158 | |
3159 const Array<Method*>* methods_array = methods(); | |
3160 if (methods()) { | |
3161 for (int i = 0; i < methods_array->length(); i++) { | |
3162 Method* method = methods_array->at(i); | |
3163 if (method) { | |
3164 sz->_method_count ++; | |
3165 method->collect_statistics(sz); | |
3166 } | |
3167 } | |
3168 } | |
3169 } | |
3170 #endif // INCLUDE_SERVICES | |
3171 | |
0 | 3172 // Verification |
3173 | |
3174 class VerifyFieldClosure: public OopClosure { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3175 protected: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3176 template <class T> void do_oop_work(T* p) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3177 oop obj = oopDesc::load_decode_heap_oop(p); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
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|
3178 if (!obj->is_oop_or_null()) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3179 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3180 Universe::print(); |
3181 guarantee(false, "boom"); | |
3182 } | |
3183 } | |
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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diff
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|
3184 public: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
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|
3185 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
ba764ed4b6f2
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coleenp
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52
diff
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|
3186 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3187 }; |
3188 | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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17464
diff
changeset
|
3189 void InstanceKlass::verify_on(outputStream* st) { |
6725
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|
3190 #ifndef PRODUCT |
11034 | 3191 // Avoid redundant verifies, this really should be in product. |
6725
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|
3192 if (_verify_count == Universe::verify_count()) return; |
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|
3193 _verify_count = Universe::verify_count(); |
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|
3194 #endif |
11034 | 3195 |
3196 // Verify Klass | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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17464
diff
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|
3197 Klass::verify_on(st); |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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17464
diff
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|
3198 |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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17464
diff
changeset
|
3199 // Verify that klass is present in ClassLoaderData |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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17464
diff
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|
3200 guarantee(class_loader_data()->contains_klass(this), |
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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17464
diff
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|
3201 "this class isn't found in class loader data"); |
6725
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|
3202 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3203 // Verify vtables |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3204 if (is_linked()) { |
11034 | 3205 ResourceMark rm; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3206 // $$$ This used to be done only for m/s collections. Doing it |
da91efe96a93
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diff
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|
3207 // always seemed a valid generalization. (DLD -- 6/00) |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
3208 vtable()->verify(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3209 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3210 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3211 // Verify first subklass |
da91efe96a93
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diff
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|
3212 if (subklass_oop() != NULL) { |
da91efe96a93
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coleenp
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diff
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|
3213 guarantee(subklass_oop()->is_klass(), "should be klass"); |
da91efe96a93
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|
3214 } |
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|
3215 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3216 // Verify siblings |
da91efe96a93
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|
3217 Klass* super = this->super(); |
da91efe96a93
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|
3218 Klass* sib = next_sibling(); |
da91efe96a93
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diff
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|
3219 if (sib != NULL) { |
da91efe96a93
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diff
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|
3220 if (sib == this) { |
da91efe96a93
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diff
changeset
|
3221 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
da91efe96a93
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|
3222 } |
da91efe96a93
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|
3223 |
da91efe96a93
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|
3224 guarantee(sib->is_klass(), "should be klass"); |
da91efe96a93
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coleenp
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diff
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|
3225 guarantee(sib->super() == super, "siblings should have same superklass"); |
da91efe96a93
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diff
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|
3226 } |
da91efe96a93
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diff
changeset
|
3227 |
da91efe96a93
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diff
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|
3228 // Verify implementor fields |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3229 Klass* im = implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3230 if (im != NULL) { |
da91efe96a93
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diff
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|
3231 guarantee(is_interface(), "only interfaces should have implementor set"); |
da91efe96a93
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coleenp
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|
3232 guarantee(im->is_klass(), "should be klass"); |
6983 | 3233 guarantee(!im->is_interface() || im == this, |
6725
da91efe96a93
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diff
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|
3234 "implementors cannot be interfaces"); |
da91efe96a93
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diff
changeset
|
3235 } |
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|
3236 |
da91efe96a93
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|
3237 // Verify local interfaces |
da91efe96a93
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coleenp
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diff
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|
3238 if (local_interfaces()) { |
da91efe96a93
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3239 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3240 for (int j = 0; j < local_interfaces->length(); j++) { |
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|
3241 Klass* e = local_interfaces->at(j); |
6983 | 3242 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3243 } |
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|
3244 } |
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|
3245 |
da91efe96a93
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|
3246 // Verify transitive interfaces |
da91efe96a93
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|
3247 if (transitive_interfaces() != NULL) { |
da91efe96a93
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|
3248 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
da91efe96a93
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|
3249 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
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|
3250 Klass* e = transitive_interfaces->at(j); |
6983 | 3251 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3252 } |
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|
3253 } |
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|
3254 |
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|
3255 // Verify methods |
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|
3256 if (methods() != NULL) { |
da91efe96a93
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|
3257 Array<Method*>* methods = this->methods(); |
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|
3258 for (int j = 0; j < methods->length(); j++) { |
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|
3259 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
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|
3260 } |
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|
3261 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3262 Method* m1 = methods->at(j); |
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|
3263 Method* m2 = methods->at(j + 1); |
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|
3264 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3265 } |
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|
3266 } |
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|
3267 |
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|
3268 // Verify method ordering |
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|
3269 if (method_ordering() != NULL) { |
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|
3270 Array<int>* method_ordering = this->method_ordering(); |
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|
3271 int length = method_ordering->length(); |
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|
3272 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
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|
3273 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
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|
3274 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3275 jlong sum = 0; |
da91efe96a93
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|
3276 for (int j = 0; j < length; j++) { |
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|
3277 int original_index = method_ordering->at(j); |
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|
3278 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3279 guarantee(original_index < length, "invalid method ordering index"); |
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|
3280 sum += original_index; |
da91efe96a93
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|
3281 } |
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|
3282 // Verify sum of indices 0,1,...,length-1 |
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|
3283 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3284 } else { |
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|
3285 guarantee(length == 0, "invalid method ordering length"); |
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|
3286 } |
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|
3287 } |
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|
3288 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3289 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3290 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3291 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
changeset
|
3292 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3293 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3294 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3295 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3296 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3297 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3298 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
|
3299 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3300 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3301 |
6725
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|
3302 // Verify JNI static field identifiers |
da91efe96a93
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|
3303 if (jni_ids() != NULL) { |
da91efe96a93
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|
3304 jni_ids()->verify(this); |
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|
3305 } |
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|
3306 |
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|
3307 // Verify other fields |
da91efe96a93
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|
3308 if (array_klasses() != NULL) { |
da91efe96a93
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|
3309 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3310 } |
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|
3311 if (constants() != NULL) { |
da91efe96a93
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|
3312 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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|
3313 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3314 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3315 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3316 guarantee(host->is_klass(), "should be klass"); |
6725
da91efe96a93
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|
3317 } |
da91efe96a93
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|
3318 } |
da91efe96a93
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|
3319 |
da91efe96a93
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|
3320 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3321 Klass::oop_verify_on(obj, st); |
3322 VerifyFieldClosure blk; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3323 obj->oop_iterate_no_header(&blk); |
0 | 3324 } |
3325 | |
6725
da91efe96a93
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|
3326 |
113
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diff
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|
3327 // JNIid class for jfieldIDs only |
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52
diff
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|
3328 // Note to reviewers: |
ba764ed4b6f2
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coleenp
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52
diff
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|
3329 // These JNI functions are just moved over to column 1 and not changed |
ba764ed4b6f2
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diff
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|
3330 // in the compressed oops workspace. |
6725
da91efe96a93
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|
3331 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
ba764ed4b6f2
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diff
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|
3332 _holder = holder; |
ba764ed4b6f2
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52
diff
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|
3333 _offset = offset; |
ba764ed4b6f2
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diff
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|
3334 _next = next; |
ba764ed4b6f2
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52
diff
changeset
|
3335 debug_only(_is_static_field_id = false;) |
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52
diff
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|
3336 } |
0 | 3337 |
3338 | |
113
ba764ed4b6f2
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52
diff
changeset
|
3339 JNIid* JNIid::find(int offset) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3340 JNIid* current = this; |
ba764ed4b6f2
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52
diff
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|
3341 while (current != NULL) { |
ba764ed4b6f2
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52
diff
changeset
|
3342 if (current->offset() == offset) return current; |
ba764ed4b6f2
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52
diff
changeset
|
3343 current = current->next(); |
ba764ed4b6f2
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52
diff
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|
3344 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
52
diff
changeset
|
3345 return NULL; |
ba764ed4b6f2
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diff
changeset
|
3346 } |
0 | 3347 |
3348 void JNIid::deallocate(JNIid* current) { | |
113
ba764ed4b6f2
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diff
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|
3349 while (current != NULL) { |
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52
diff
changeset
|
3350 JNIid* next = current->next(); |
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coleenp
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52
diff
changeset
|
3351 delete current; |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3352 current = next; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3353 } |
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52
diff
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|
3354 } |
0 | 3355 |
3356 | |
6725
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6266
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|
3357 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3358 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
ba764ed4b6f2
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|
3359 int end_field_offset; |
6725
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diff
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|
3360 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3361 |
113
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diff
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|
3362 JNIid* current = this; |
ba764ed4b6f2
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52
diff
changeset
|
3363 while (current != NULL) { |
ba764ed4b6f2
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52
diff
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|
3364 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3365 #ifdef ASSERT |
ba764ed4b6f2
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52
diff
changeset
|
3366 int o = current->offset(); |
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52
diff
changeset
|
3367 if (current->is_static_field_id()) { |
ba764ed4b6f2
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52
diff
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|
3368 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
ba764ed4b6f2
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diff
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|
3369 } |
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52
diff
changeset
|
3370 #endif |
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3371 current = current->next(); |
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3372 } |
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3373 } |
0 | 3374 |
3375 | |
3376 #ifdef ASSERT | |
6725
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3377 void InstanceKlass::set_init_state(ClassState state) { |
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3378 bool good_state = is_shared() ? (_init_state <= state) |
113
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3379 : (_init_state < state); |
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3380 assert(good_state || state == allocated, "illegal state transition"); |
4739
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3381 _init_state = (u1)state; |
113
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3382 } |
0 | 3383 #endif |
3384 | |
3385 | |
3386 // RedefineClasses() support for previous versions: | |
3387 | |
6725
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3388 // Purge previous versions |
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3389 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3390 if (ik->previous_versions() != NULL) { |
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3391 // This klass has previous versions so see what we can cleanup |
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3392 // while it is safe to do so. |
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3393 |
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3394 int deleted_count = 0; // leave debugging breadcrumbs |
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3395 int live_count = 0; |
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3396 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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3397 ClassLoaderData::the_null_class_loader_data() : |
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3398 ik->class_loader_data(); |
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3399 |
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3400 // RC_TRACE macro has an embedded ResourceMark |
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3401 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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3402 ik->external_name(), ik->previous_versions()->length())); |
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3403 |
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3404 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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3405 // check the previous versions array |
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3406 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3407 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3408 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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3409 |
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3410 ConstantPool* pvcp = cp_ref; |
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3411 if (!pvcp->on_stack()) { |
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3412 // If the constant pool isn't on stack, none of the methods |
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3413 // are executing. Delete all the methods, the constant pool and |
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3414 // and this previous version node. |
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3415 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3416 if (method_refs != NULL) { |
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3417 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3418 Method* method = method_refs->at(j); |
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3419 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3420 method_refs->remove_at(j); |
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3421 // method will be freed with associated class. |
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3422 } |
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3423 } |
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3424 // Remove the constant pool |
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3425 delete pv_node; |
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3426 // Since we are traversing the array backwards, we don't have to |
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3427 // do anything special with the index. |
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3428 ik->previous_versions()->remove_at(i); |
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3429 deleted_count++; |
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3430 continue; |
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3431 } else { |
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3432 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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3433 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3434 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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3435 live_count++; |
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3436 } |
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3437 |
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3438 // At least one method is live in this previous version, clean out |
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3439 // the others or mark them as obsolete. |
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3440 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3441 if (method_refs != NULL) { |
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3442 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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3443 method_refs->length())); |
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3444 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3445 Method* method = method_refs->at(j); |
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3446 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3447 |
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3448 // Remove the emcp method if it's not executing |
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3449 // If it's been made obsolete by a redefinition of a non-emcp |
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3450 // method, mark it as obsolete but leave it to clean up later. |
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3451 if (!method->on_stack()) { |
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3452 method_refs->remove_at(j); |
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3453 } else if (emcp_method_count == 0) { |
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3454 method->set_is_obsolete(); |
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3455 } else { |
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3456 // RC_TRACE macro has an embedded ResourceMark |
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3457 RC_TRACE(0x00000200, |
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3458 ("purge: %s(%s): prev method @%d in version @%d is alive", |
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3459 method->name()->as_C_string(), |
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3460 method->signature()->as_C_string(), j, i)); |
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3461 } |
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|
3462 } |
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|
3463 } |
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|
3464 } |
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|
3465 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
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3466 RC_TRACE(0x00000200, |
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3467 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
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3468 deleted_count)); |
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|
3469 } |
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|
3470 } |
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|
3471 |
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3472 // External interface for use during class unloading. |
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3473 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
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3474 // Call with >0 emcp methods since they are not currently being redefined. |
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3475 purge_previous_versions_internal(ik, 1); |
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|
3476 } |
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|
3477 |
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|
3478 |
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3479 // Potentially add an information node that contains pointers to the |
0 | 3480 // interesting parts of the previous version of the_class. |
6725
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3481 // This is also where we clean out any unused references. |
977
74a5db69c1fe
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diff
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|
3482 // Note that while we delete nodes from the _previous_versions |
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diff
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|
3483 // array, we never delete the array itself until the klass is |
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diff
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|
3484 // unloaded. The has_been_redefined() query depends on that fact. |
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diff
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|
3485 // |
6725
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3486 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
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3487 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3488 assert(Thread::current()->is_VM_thread(), |
113
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|
3489 "only VMThread can add previous versions"); |
0 | 3490 |
3491 if (_previous_versions == NULL) { | |
3492 // This is the first previous version so make some space. | |
3493 // Start with 2 elements under the assumption that the class | |
3494 // won't be redefined much. | |
6197 | 3495 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3496 GrowableArray<PreviousVersionNode *>(2, true); |
3497 } | |
3498 | |
6725
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3499 ConstantPool* cp_ref = ikh->constants(); |
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3500 |
0 | 3501 // RC_TRACE macro has an embedded ResourceMark |
6725
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3502 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
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3503 "on_stack=%d", |
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3504 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
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|
3505 cp_ref->on_stack())); |
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|
3506 |
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3507 // If the constant pool for this previous version of the class |
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|
3508 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3509 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3510 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3511 // we still need to examine older previous versions below. |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3512 Array<Method*>* old_methods = ikh->methods(); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3513 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3514 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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diff
changeset
|
3515 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3516 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3517 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3518 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3519 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3520 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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diff
changeset
|
3521 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3522 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3523 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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|
3524 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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diff
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|
3525 for (int i = 0; i < old_methods->length(); i++) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3526 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3527 // this old method is EMCP. Save it only if it's on the stack |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3528 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3529 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
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|
3530 method_refs->append(old_method); |
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8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
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|
3531 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3532 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
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|
3533 // no more EMCP methods so bail out now |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3534 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3535 } |
0 | 3536 } |
3537 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3538 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
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|
3539 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3540 } |
da91efe96a93
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diff
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|
3541 // append new previous version. |
12281
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coleenp
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diff
changeset
|
3542 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3543 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3544 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3545 // Since the caller is the VMThread and we are at a safepoint, this |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3546 // is a good time to clear out unused references. |
0 | 3547 |
3548 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3549 _previous_versions->length())); | |
3550 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3551 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3552 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3553 |
3554 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3555 | |
3556 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3557 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3558 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3559 // clear out any matching EMCP method entries the hard way. |
3560 int local_count = 0; | |
3561 for (int i = 0; i < old_methods->length(); i++) { | |
3562 if (!emcp_methods->at(i)) { | |
3563 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3564 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3565 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3566 Symbol* m_signature = old_method->signature(); |
0 | 3567 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3568 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3569 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
|
3570 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3571 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3572 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3573 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3574 if (method_refs == NULL) { |
3575 // We have run into a PreviousVersion generation where | |
3576 // all methods were made obsolete during that generation's | |
3577 // RedefineClasses() operation. At the time of that | |
3578 // operation, all EMCP methods were flushed so we don't | |
3579 // have to go back any further. | |
3580 // | |
3581 // A NULL method_refs is different than an empty method_refs. | |
3582 // We cannot infer any optimizations about older generations | |
3583 // from an empty method_refs for the current generation. | |
3584 break; | |
3585 } | |
3586 | |
3587 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3588 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3589 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3590 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3591 method->name() == m_name && |
0 | 3592 method->signature() == m_signature) { |
3593 // The current RedefineClasses() call has made all EMCP | |
3594 // 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
|
3595 // and remove the reference. |
0 | 3596 RC_TRACE(0x00000400, |
3597 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3598 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3599 | |
3600 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3601 // 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
|
3602 // clean up later. |
0 | 3603 break; |
3604 } | |
3605 } | |
3606 | |
3607 // The previous loop may not find a matching EMCP method, but | |
3608 // that doesn't mean that we can optimize and not go any | |
3609 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3610 // method for this generation could have already been deleted, |
0 | 3611 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3612 // been deleted. |
0 | 3613 } |
3614 | |
3615 if (++local_count >= obsolete_method_count) { | |
3616 // no more obsolete methods so bail out now | |
3617 break; | |
3618 } | |
3619 } | |
3620 } | |
3621 } | |
3622 } // end add_previous_version() | |
3623 | |
3624 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3625 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3626 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3627 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3628 } // end has_previous_version() |
3629 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3630 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3631 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3632 Method* m = NULL; |
0 | 3633 if (idnum < methods()->length()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3634 m = methods()->at(idnum); |
0 | 3635 } |
3636 if (m == NULL || m->method_idnum() != idnum) { | |
3637 for (int index = 0; index < methods()->length(); ++index) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3638 m = methods()->at(index); |
0 | 3639 if (m->method_idnum() == idnum) { |
3640 return m; | |
3641 } | |
3642 } | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3643 // None found, return null for the caller to handle. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3644 return NULL; |
0 | 3645 } |
3646 return m; | |
3647 } | |
3648 | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3649 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3650 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3651 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3652 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3653 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3654 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3655 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3656 |
0 | 3657 |
3658 // Construct a PreviousVersionNode entry for the array hung off | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3659 // the InstanceKlass. |
da91efe96a93
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diff
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|
3660 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3661 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3662 |
3663 _prev_constant_pool = prev_constant_pool; | |
3664 _prev_EMCP_methods = prev_EMCP_methods; | |
3665 } | |
3666 | |
3667 | |
3668 // Destroy a PreviousVersionNode | |
3669 PreviousVersionNode::~PreviousVersionNode() { | |
3670 if (_prev_constant_pool != NULL) { | |
6725
da91efe96a93
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6266
diff
changeset
|
3671 _prev_constant_pool = NULL; |
0 | 3672 } |
3673 | |
3674 if (_prev_EMCP_methods != NULL) { | |
3675 delete _prev_EMCP_methods; | |
3676 } | |
3677 } | |
3678 | |
3679 // Construct a helper for walking the previous versions array | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3680 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3681 _thread = thread; |
0 | 3682 _previous_versions = ik->previous_versions(); |
3683 _current_index = 0; | |
3684 _current_p = NULL; | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3685 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3686 } |
3687 | |
3688 | |
3689 // Return the interesting information for the next previous version | |
3690 // of the klass. Returns NULL if there are no more previous versions. | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3691 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3692 if (_previous_versions == NULL) { |
3693 // no previous versions so nothing to return | |
3694 return NULL; | |
3695 } | |
3696 | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3697 _current_p = NULL; // reset to NULL |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3698 _current_constant_pool_handle = NULL; |
0 | 3699 |
3700 int length = _previous_versions->length(); | |
3701 | |
3702 while (_current_index < length) { | |
3703 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3704 |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3705 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3706 // which keeps all the methods from being deallocated. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3707 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3708 _current_p = pv_node; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3709 return pv_node; |
0 | 3710 } |
3711 | |
3712 return NULL; | |
3713 } // end next_previous_version() |