Mercurial > hg > truffle
annotate src/share/vm/oops/instanceKlass.cpp @ 19305:48bdad77afcd
Truffle-DSL: assumptions javadoc fixes.
author | Christian Humer <christian.humer@gmail.com> |
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date | Wed, 11 Feb 2015 21:51:26 +0100 |
parents | 52b4284cb496 |
children | e6637891a870 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/metadataFactory.hpp" |
1972 | 39 #include "memory/oopFactory.hpp" |
3938 | 40 #include "oops/fieldStreams.hpp" |
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41 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 42 #include "oops/instanceKlass.hpp" |
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43 #include "oops/instanceMirrorKlass.hpp" |
1972 | 44 #include "oops/instanceOop.hpp" |
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45 #include "oops/klass.inline.hpp" |
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46 #include "oops/method.hpp" |
1972 | 47 #include "oops/oop.inline.hpp" |
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48 #include "oops/symbol.hpp" |
1972 | 49 #include "prims/jvmtiExport.hpp" |
50 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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51 #include "prims/jvmtiRedefineClasses.hpp" |
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52 #include "prims/methodComparator.hpp" |
1972 | 53 #include "runtime/fieldDescriptor.hpp" |
54 #include "runtime/handles.inline.hpp" | |
55 #include "runtime/javaCalls.hpp" | |
56 #include "runtime/mutexLocker.hpp" | |
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57 #include "runtime/thread.inline.hpp" |
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58 #include "services/classLoadingService.hpp" |
1972 | 59 #include "services/threadService.hpp" |
60 #include "utilities/dtrace.hpp" | |
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61 #include "utilities/macros.hpp" |
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62 #ifdef GRAAL |
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63 #include "classfile/javaAssertions.hpp" |
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64 #include "graal/graalRuntime.hpp" |
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65 #endif |
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66 #if INCLUDE_ALL_GCS |
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67 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 68 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
69 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
70 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
71 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
72 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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73 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 74 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
75 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
76 #include "oops/oop.pcgc.inline.hpp" | |
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77 #endif // INCLUDE_ALL_GCS |
1972 | 78 #ifdef COMPILER1 |
79 #include "c1/c1_Compiler.hpp" | |
80 #endif | |
0 | 81 |
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82 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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83 |
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84 #ifdef DTRACE_ENABLED |
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85 |
4006 | 86 #ifndef USDT2 |
87 | |
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88 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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89 char*, intptr_t, oop, intptr_t); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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103 char*, intptr_t, oop, intptr_t, int); |
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104 |
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105 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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106 { \ |
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107 char* data = NULL; \ |
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108 int len = 0; \ |
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109 Symbol* name = (clss)->name(); \ |
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110 if (name != NULL) { \ |
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111 data = (char*)name->bytes(); \ |
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112 len = name->utf8_length(); \ |
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113 } \ |
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114 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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115 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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116 } |
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117 |
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118 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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119 { \ |
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120 char* data = NULL; \ |
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121 int len = 0; \ |
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122 Symbol* name = (clss)->name(); \ |
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123 if (name != NULL) { \ |
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124 data = (char*)name->bytes(); \ |
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125 len = name->utf8_length(); \ |
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126 } \ |
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127 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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128 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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129 } |
4006 | 130 #else /* USDT2 */ |
131 | |
132 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
133 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
134 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
135 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
136 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
137 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
138 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
139 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
140 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
141 { \ | |
142 char* data = NULL; \ | |
143 int len = 0; \ | |
144 Symbol* name = (clss)->name(); \ | |
145 if (name != NULL) { \ | |
146 data = (char*)name->bytes(); \ | |
147 len = name->utf8_length(); \ | |
148 } \ | |
149 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
150 data, len, (clss)->class_loader(), thread_type); \ | |
151 } | |
152 | |
153 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
154 { \ | |
155 char* data = NULL; \ | |
156 int len = 0; \ | |
157 Symbol* name = (clss)->name(); \ | |
158 if (name != NULL) { \ | |
159 data = (char*)name->bytes(); \ | |
160 len = name->utf8_length(); \ | |
161 } \ | |
162 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
163 data, len, (clss)->class_loader(), thread_type, wait); \ | |
164 } | |
165 #endif /* USDT2 */ | |
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166 |
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167 #else // ndef DTRACE_ENABLED |
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168 |
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169 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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170 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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171 |
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172 #endif // ndef DTRACE_ENABLED |
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173 |
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174 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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175 |
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176 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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177 ClassLoaderData* loader_data, |
8031 | 178 int vtable_len, |
179 int itable_len, | |
180 int static_field_size, | |
181 int nonstatic_oop_map_size, | |
182 ReferenceType rt, | |
183 AccessFlags access_flags, | |
184 Symbol* name, | |
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185 Klass* super_klass, |
8031 | 186 bool is_anonymous, |
187 TRAPS) { | |
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188 |
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189 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 190 access_flags.is_interface(), is_anonymous); |
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191 |
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192 // Allocation |
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193 InstanceKlass* ik; |
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194 if (rt == REF_NONE) { |
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195 if (name == vmSymbols::java_lang_Class()) { |
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196 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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197 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 198 access_flags, is_anonymous); |
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199 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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200 (SystemDictionary::ClassLoader_klass_loaded() && |
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201 super_klass != NULL && |
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202 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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203 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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204 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 205 access_flags, is_anonymous); |
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206 } else { |
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207 // normal class |
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208 ik = new (loader_data, size, THREAD) InstanceKlass( |
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209 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
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211 } |
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212 } else { |
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213 // reference klass |
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214 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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215 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 216 access_flags, is_anonymous); |
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217 } |
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218 |
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219 // Check for pending exception before adding to the loader data and incrementing |
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220 // class count. Can get OOM here. |
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221 if (HAS_PENDING_EXCEPTION) { |
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222 return NULL; |
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223 } |
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224 |
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225 // Add all classes to our internal class loader list here, |
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226 // including classes in the bootstrap (NULL) class loader. |
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227 loader_data->add_class(ik); |
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228 |
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229 Atomic::inc(&_total_instanceKlass_count); |
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230 return ik; |
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231 } |
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232 |
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233 |
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234 // copy method ordering from resource area to Metaspace |
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235 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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236 if (m != NULL) { |
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237 // allocate a new array and copy contents (memcpy?) |
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238 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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239 for (int i = 0; i < m->length(); i++) { |
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240 _method_ordering->at_put(i, m->at(i)); |
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241 } |
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242 } else { |
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243 _method_ordering = Universe::the_empty_int_array(); |
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244 } |
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245 } |
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246 |
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247 // create a new array of vtable_indices for default methods |
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248 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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249 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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250 assert(default_vtable_indices() == NULL, "only create once"); |
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251 set_default_vtable_indices(vtable_indices); |
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252 return vtable_indices; |
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253 } |
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254 |
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255 InstanceKlass::InstanceKlass(int vtable_len, |
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256 int itable_len, |
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257 int static_field_size, |
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258 int nonstatic_oop_map_size, |
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259 ReferenceType rt, |
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260 AccessFlags access_flags, |
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261 bool is_anonymous) { |
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262 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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263 |
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264 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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265 access_flags.is_interface(), is_anonymous); |
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266 |
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267 set_vtable_length(vtable_len); |
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268 set_itable_length(itable_len); |
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269 set_static_field_size(static_field_size); |
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270 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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271 set_access_flags(access_flags); |
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272 _misc_flags = 0; // initialize to zero |
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273 set_is_anonymous(is_anonymous); |
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274 assert(size() == iksize, "wrong size for object"); |
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275 |
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276 set_array_klasses(NULL); |
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277 set_methods(NULL); |
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278 set_method_ordering(NULL); |
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279 set_default_methods(NULL); |
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280 set_default_vtable_indices(NULL); |
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281 set_local_interfaces(NULL); |
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282 set_transitive_interfaces(NULL); |
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283 init_implementor(); |
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284 set_fields(NULL, 0); |
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285 set_constants(NULL); |
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286 set_class_loader_data(NULL); |
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287 set_source_file_name_index(0); |
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288 set_source_debug_extension(NULL, 0); |
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289 set_array_name(NULL); |
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290 set_inner_classes(NULL); |
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291 set_static_oop_field_count(0); |
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292 set_nonstatic_field_size(0); |
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293 set_is_marked_dependent(false); |
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294 set_init_state(InstanceKlass::allocated); |
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295 set_init_thread(NULL); |
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296 set_reference_type(rt); |
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297 #ifdef GRAAL |
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298 set_graal_node_class(NULL); |
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299 #endif |
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300 set_oop_map_cache(NULL); |
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301 set_jni_ids(NULL); |
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302 set_osr_nmethods_head(NULL); |
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303 set_breakpoints(NULL); |
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304 init_previous_versions(); |
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305 set_generic_signature_index(0); |
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306 release_set_methods_jmethod_ids(NULL); |
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307 set_annotations(NULL); |
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308 set_jvmti_cached_class_field_map(NULL); |
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309 set_initial_method_idnum(0); |
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310 _dependencies = NULL; |
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311 set_jvmti_cached_class_field_map(NULL); |
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312 set_cached_class_file(NULL); |
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313 set_initial_method_idnum(0); |
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314 set_minor_version(0); |
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315 set_major_version(0); |
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316 NOT_PRODUCT(_verify_count = 0;) |
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317 |
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318 // initialize the non-header words to zero |
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319 intptr_t* p = (intptr_t*)this; |
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320 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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321 p[index] = NULL_WORD; |
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322 } |
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323 |
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324 // Set temporary value until parseClassFile updates it with the real instance |
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325 // size. |
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326 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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327 } |
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328 |
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329 #ifdef GRAAL |
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330 void InstanceKlass::oops_do(OopClosure* cl) { |
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331 Klass::oops_do(cl); |
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332 cl->do_oop(adr_graal_node_class()); |
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333 } |
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334 #endif |
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335 |
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336 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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337 Array<Method*>* methods) { |
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338 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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339 !methods->is_shared()) { |
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340 for (int i = 0; i < methods->length(); i++) { |
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341 Method* method = methods->at(i); |
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342 if (method == NULL) continue; // maybe null if error processing |
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343 // Only want to delete methods that are not executing for RedefineClasses. |
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344 // The previous version will point to them so they're not totally dangling |
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345 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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346 MetadataFactory::free_metadata(loader_data, method); |
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347 } |
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348 MetadataFactory::free_array<Method*>(loader_data, methods); |
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349 } |
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350 } |
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351 |
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352 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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353 Klass* super_klass, |
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354 Array<Klass*>* local_interfaces, |
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355 Array<Klass*>* transitive_interfaces) { |
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356 // Only deallocate transitive interfaces if not empty, same as super class |
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357 // or same as local interfaces. See code in parseClassFile. |
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358 Array<Klass*>* ti = transitive_interfaces; |
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359 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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360 // check that the interfaces don't come from super class |
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361 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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362 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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363 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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364 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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365 } |
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366 } |
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367 |
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368 // local interfaces can be empty |
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369 if (local_interfaces != Universe::the_empty_klass_array() && |
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370 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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371 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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372 } |
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373 } |
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374 |
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375 // This function deallocates the metadata and C heap pointers that the |
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376 // InstanceKlass points to. |
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377 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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378 |
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379 // Orphan the mirror first, CMS thinks it's still live. |
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380 if (java_mirror() != NULL) { |
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381 java_lang_Class::set_klass(java_mirror(), NULL); |
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382 } |
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383 |
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384 // Need to take this class off the class loader data list. |
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385 loader_data->remove_class(this); |
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386 |
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387 // The array_klass for this class is created later, after error handling. |
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388 // For class redefinition, we keep the original class so this scratch class |
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389 // doesn't have an array class. Either way, assert that there is nothing |
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390 // to deallocate. |
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391 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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392 |
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393 // Release C heap allocated data that this might point to, which includes |
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394 // reference counting symbol names. |
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395 release_C_heap_structures(); |
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396 |
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397 deallocate_methods(loader_data, methods()); |
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398 set_methods(NULL); |
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399 |
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400 if (method_ordering() != NULL && |
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401 method_ordering() != Universe::the_empty_int_array() && |
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402 !method_ordering()->is_shared()) { |
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403 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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404 } |
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405 set_method_ordering(NULL); |
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406 |
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407 // default methods can be empty |
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408 if (default_methods() != NULL && |
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409 default_methods() != Universe::the_empty_method_array() && |
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410 !default_methods()->is_shared()) { |
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411 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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412 } |
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413 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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414 set_default_methods(NULL); |
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415 |
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416 // default methods vtable indices can be empty |
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417 if (default_vtable_indices() != NULL && |
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418 !default_vtable_indices()->is_shared()) { |
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419 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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420 } |
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421 set_default_vtable_indices(NULL); |
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422 |
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423 |
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424 // This array is in Klass, but remove it with the InstanceKlass since |
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425 // this place would be the only caller and it can share memory with transitive |
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426 // interfaces. |
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427 if (secondary_supers() != NULL && |
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428 secondary_supers() != Universe::the_empty_klass_array() && |
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429 secondary_supers() != transitive_interfaces() && |
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430 !secondary_supers()->is_shared()) { |
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431 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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432 } |
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433 set_secondary_supers(NULL); |
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434 |
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435 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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436 set_transitive_interfaces(NULL); |
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437 set_local_interfaces(NULL); |
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438 |
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439 if (fields() != NULL && !fields()->is_shared()) { |
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440 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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441 } |
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442 set_fields(NULL, 0); |
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443 |
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444 // If a method from a redefined class is using this constant pool, don't |
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445 // delete it, yet. The new class's previous version will point to this. |
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446 if (constants() != NULL) { |
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447 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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448 if (!constants()->is_shared()) { |
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449 MetadataFactory::free_metadata(loader_data, constants()); |
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450 } |
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451 set_constants(NULL); |
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452 } |
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453 |
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454 if (inner_classes() != NULL && |
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455 inner_classes() != Universe::the_empty_short_array() && |
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456 !inner_classes()->is_shared()) { |
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457 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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458 } |
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459 set_inner_classes(NULL); |
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460 |
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461 // We should deallocate the Annotations instance if it's not in shared spaces. |
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462 if (annotations() != NULL && !annotations()->is_shared()) { |
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463 MetadataFactory::free_metadata(loader_data, annotations()); |
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464 } |
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465 set_annotations(NULL); |
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466 } |
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467 |
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468 bool InstanceKlass::should_be_initialized() const { |
0 | 469 return !is_initialized(); |
470 } | |
471 | |
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472 klassVtable* InstanceKlass::vtable() const { |
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473 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 474 } |
475 | |
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476 klassItable* InstanceKlass::itable() const { |
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477 return new klassItable(instanceKlassHandle(this)); |
0 | 478 } |
479 | |
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480 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 481 if (!EagerInitialization) return; |
482 | |
483 if (this->is_not_initialized()) { | |
484 // abort if the the class has a class initializer | |
485 if (this->class_initializer() != NULL) return; | |
486 | |
487 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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488 Klass* super = this->super(); |
0 | 489 if (super == NULL) return; |
490 | |
491 // abort if the super class should be initialized | |
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492 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 493 |
494 // call body to expose the this pointer | |
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495 instanceKlassHandle this_oop(thread, this); |
0 | 496 eager_initialize_impl(this_oop); |
497 } | |
498 } | |
499 | |
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500 // JVMTI spec thinks there are signers and protection domain in the |
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501 // instanceKlass. These accessors pretend these fields are there. |
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502 // The hprof specification also thinks these fields are in InstanceKlass. |
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503 oop InstanceKlass::protection_domain() const { |
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504 // return the protection_domain from the mirror |
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505 return java_lang_Class::protection_domain(java_mirror()); |
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506 } |
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507 |
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508 // To remove these from requires an incompatible change and CCC request. |
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509 objArrayOop InstanceKlass::signers() const { |
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510 // return the signers from the mirror |
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511 return java_lang_Class::signers(java_mirror()); |
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512 } |
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513 |
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514 oop InstanceKlass::init_lock() const { |
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515 // return the init lock from the mirror |
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516 oop lock = java_lang_Class::init_lock(java_mirror()); |
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517 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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518 "only fully initialized state can have a null lock"); |
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519 return lock; |
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520 } |
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521 |
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522 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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523 // threads to get this lock will see a null lock and will not lock. |
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524 // That's okay because they all check for initialized state after getting |
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525 // the lock and return. |
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526 void InstanceKlass::fence_and_clear_init_lock() { |
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527 // make sure previous stores are all done, notably the init_state. |
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528 OrderAccess::storestore(); |
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529 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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530 assert(!is_not_initialized(), "class must be initialized now"); |
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531 } |
0 | 532 |
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533 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 534 EXCEPTION_MARK; |
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535 oop init_lock = this_oop->init_lock(); |
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536 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 537 |
538 // abort if someone beat us to the initialization | |
539 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
540 | |
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541 ClassState old_state = this_oop->init_state(); |
0 | 542 link_class_impl(this_oop, true, THREAD); |
543 if (HAS_PENDING_EXCEPTION) { | |
544 CLEAR_PENDING_EXCEPTION; | |
545 // Abort if linking the class throws an exception. | |
546 | |
547 // Use a test to avoid redundantly resetting the state if there's | |
548 // no change. Set_init_state() asserts that state changes make | |
549 // progress, whereas here we might just be spinning in place. | |
550 if( old_state != this_oop->_init_state ) | |
551 this_oop->set_init_state (old_state); | |
552 } else { | |
553 // linking successfull, mark class as initialized | |
554 this_oop->set_init_state (fully_initialized); | |
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555 this_oop->fence_and_clear_init_lock(); |
0 | 556 // trace |
557 if (TraceClassInitialization) { | |
558 ResourceMark rm(THREAD); | |
559 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
560 } | |
561 } | |
562 } | |
563 | |
564 | |
565 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
566 // process. The step comments refers to the procedure described in that section. | |
567 // Note: implementation moved to static method to expose the this pointer. | |
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568 void InstanceKlass::initialize(TRAPS) { |
0 | 569 if (this->should_be_initialized()) { |
570 HandleMark hm(THREAD); | |
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571 instanceKlassHandle this_oop(THREAD, this); |
0 | 572 initialize_impl(this_oop, CHECK); |
573 // Note: at this point the class may be initialized | |
574 // OR it may be in the state of being initialized | |
575 // in case of recursive initialization! | |
576 } else { | |
577 assert(is_initialized(), "sanity check"); | |
578 } | |
579 } | |
580 | |
581 | |
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582 bool InstanceKlass::verify_code( |
0 | 583 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
584 // 1) Verify the bytecodes | |
585 Verifier::Mode mode = | |
586 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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587 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 588 } |
589 | |
590 | |
591 // Used exclusively by the shared spaces dump mechanism to prevent | |
592 // classes mapped into the shared regions in new VMs from appearing linked. | |
593 | |
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594 void InstanceKlass::unlink_class() { |
0 | 595 assert(is_linked(), "must be linked"); |
596 _init_state = loaded; | |
597 } | |
598 | |
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599 void InstanceKlass::link_class(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, true, CHECK); |
605 } | |
606 } | |
607 | |
608 // Called to verify that a class can link during initialization, without | |
609 // throwing a VerifyError. | |
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610 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 611 assert(is_loaded(), "must be loaded"); |
612 if (!is_linked()) { | |
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613 HandleMark hm(THREAD); |
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614 instanceKlassHandle this_oop(THREAD, this); |
0 | 615 link_class_impl(this_oop, false, CHECK_false); |
616 } | |
617 return is_linked(); | |
618 } | |
619 | |
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620 bool InstanceKlass::link_class_impl( |
0 | 621 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
622 // check for error state | |
623 if (this_oop->is_in_error_state()) { | |
624 ResourceMark rm(THREAD); | |
625 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
626 this_oop->external_name(), false); | |
627 } | |
628 // return if already verified | |
629 if (this_oop->is_linked()) { | |
630 return true; | |
631 } | |
632 | |
633 // Timing | |
634 // timer handles recursion | |
635 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
636 JavaThread* jt = (JavaThread*)THREAD; | |
637 | |
638 // link super class before linking this class | |
639 instanceKlassHandle super(THREAD, this_oop->super()); | |
640 if (super.not_null()) { | |
641 if (super->is_interface()) { // check if super class is an interface | |
642 ResourceMark rm(THREAD); | |
643 Exceptions::fthrow( | |
644 THREAD_AND_LOCATION, | |
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645 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 646 "class %s has interface %s as super class", |
647 this_oop->external_name(), | |
648 super->external_name() | |
649 ); | |
650 return false; | |
651 } | |
652 | |
653 link_class_impl(super, throw_verifyerror, CHECK_false); | |
654 } | |
655 | |
656 // link all interfaces implemented by this class before linking this class | |
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657 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 658 int num_interfaces = interfaces->length(); |
659 for (int index = 0; index < num_interfaces; index++) { | |
660 HandleMark hm(THREAD); | |
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661 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 662 link_class_impl(ih, throw_verifyerror, CHECK_false); |
663 } | |
664 | |
665 // in case the class is linked in the process of linking its superclasses | |
666 if (this_oop->is_linked()) { | |
667 return true; | |
668 } | |
669 | |
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670 // trace only the link time for this klass that includes |
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671 // the verification time |
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672 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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673 ClassLoader::perf_class_link_selftime(), |
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674 ClassLoader::perf_classes_linked(), |
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675 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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676 jt->get_thread_stat()->perf_timers_addr(), |
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677 PerfClassTraceTime::CLASS_LINK); |
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678 |
0 | 679 // verification & rewriting |
680 { | |
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681 oop init_lock = this_oop->init_lock(); |
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682 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 683 // rewritten will have been set if loader constraint error found |
684 // on an earlier link attempt | |
685 // don't verify or rewrite if already rewritten | |
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686 |
0 | 687 if (!this_oop->is_linked()) { |
688 if (!this_oop->is_rewritten()) { | |
689 { | |
690 // Timer includes any side effects of class verification (resolution, | |
691 // etc), but not recursive entry into verify_code(). | |
875
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692 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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693 ClassLoader::perf_class_verify_selftime(), |
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694 ClassLoader::perf_classes_verified(), |
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695 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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696 jt->get_thread_stat()->perf_timers_addr(), |
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697 PerfClassTraceTime::CLASS_VERIFY); |
0 | 698 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
699 if (!verify_ok) { | |
700 return false; | |
701 } | |
702 } | |
703 | |
704 // Just in case a side-effect of verify linked this class already | |
705 // (which can sometimes happen since the verifier loads classes | |
706 // using custom class loaders, which are free to initialize things) | |
707 if (this_oop->is_linked()) { | |
708 return true; | |
709 } | |
710 | |
711 // also sets rewritten | |
712 this_oop->rewrite_class(CHECK_false); | |
713 } | |
714 | |
3404 | 715 // relocate jsrs and link methods after they are all rewritten |
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716 this_oop->link_methods(CHECK_false); |
3404 | 717 |
0 | 718 // Initialize the vtable and interface table after |
719 // methods have been rewritten since rewrite may | |
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720 // fabricate new Method*s. |
0 | 721 // also does loader constraint checking |
722 if (!this_oop()->is_shared()) { | |
723 ResourceMark rm(THREAD); | |
724 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
725 this_oop->itable()->initialize_itable(true, CHECK_false); | |
726 } | |
727 #ifdef ASSERT | |
728 else { | |
729 ResourceMark rm(THREAD); | |
730 this_oop->vtable()->verify(tty, true); | |
731 // In case itable verification is ever added. | |
732 // this_oop->itable()->verify(tty, true); | |
733 } | |
734 #endif | |
735 this_oop->set_init_state(linked); | |
736 if (JvmtiExport::should_post_class_prepare()) { | |
737 Thread *thread = THREAD; | |
738 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
739 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
740 } | |
741 } | |
742 } | |
743 return true; | |
744 } | |
745 | |
746 | |
747 // Rewrite the byte codes of all of the methods of a class. | |
748 // The rewriter must be called exactly once. Rewriting must happen after | |
749 // verification but before the first method of the class is executed. | |
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750 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 751 assert(is_loaded(), "must be loaded"); |
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752 instanceKlassHandle this_oop(THREAD, this); |
0 | 753 if (this_oop->is_rewritten()) { |
754 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
755 return; | |
756 } | |
3404 | 757 Rewriter::rewrite(this_oop, CHECK); |
0 | 758 this_oop->set_rewritten(); |
759 } | |
760 | |
3404 | 761 // Now relocate and link method entry points after class is rewritten. |
762 // This is outside is_rewritten flag. In case of an exception, it can be | |
763 // executed more than once. | |
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764 void InstanceKlass::link_methods(TRAPS) { |
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765 int len = methods()->length(); |
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766 for (int i = len-1; i >= 0; i--) { |
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767 methodHandle m(THREAD, methods()->at(i)); |
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768 |
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769 // Set up method entry points for compiler and interpreter . |
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770 m->link_method(m, CHECK); |
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771 |
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772 // This is for JVMTI and unrelated to relocator but the last thing we do |
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773 #ifdef ASSERT |
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774 if (StressMethodComparator) { |
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775 ResourceMark rm(THREAD); |
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776 static int nmc = 0; |
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777 for (int j = i; j >= 0 && j >= i-4; j--) { |
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778 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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779 bool z = MethodComparator::methods_EMCP(m(), |
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780 methods()->at(j)); |
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781 if (j == i && !z) { |
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782 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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783 assert(z, "method must compare equal to itself"); |
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784 } |
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785 } |
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786 } |
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787 #endif //ASSERT |
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788 } |
3404 | 789 } |
790 | |
0 | 791 |
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792 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 793 // Make sure klass is linked (verified) before initialization |
794 // A class could already be verified, since it has been reflected upon. | |
795 this_oop->link_class(CHECK); | |
796 | |
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797 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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798 |
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799 bool wait = false; |
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800 |
0 | 801 // refer to the JVM book page 47 for description of steps |
802 // Step 1 | |
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803 { |
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804 oop init_lock = this_oop->init_lock(); |
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805 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 806 |
807 Thread *self = THREAD; // it's passed the current thread | |
808 | |
809 // Step 2 | |
810 // If we were to use wait() instead of waitInterruptibly() then | |
811 // we might end up throwing IE from link/symbol resolution sites | |
812 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
813 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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814 wait = true; |
0 | 815 ol.waitUninterruptibly(CHECK); |
816 } | |
817 | |
818 // Step 3 | |
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819 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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820 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 821 return; |
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822 } |
0 | 823 |
824 // Step 4 | |
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825 if (this_oop->is_initialized()) { |
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826 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 827 return; |
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828 } |
0 | 829 |
830 // Step 5 | |
831 if (this_oop->is_in_error_state()) { | |
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832 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 833 ResourceMark rm(THREAD); |
834 const char* desc = "Could not initialize class "; | |
835 const char* className = this_oop->external_name(); | |
836 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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837 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 838 if (NULL == message) { |
839 // Out of memory: can't create detailed error message | |
840 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
841 } else { | |
842 jio_snprintf(message, msglen, "%s%s", desc, className); | |
843 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
844 } | |
845 } | |
846 | |
847 // Step 6 | |
848 this_oop->set_init_state(being_initialized); | |
849 this_oop->set_init_thread(self); | |
850 } | |
851 | |
852 // Step 7 | |
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853 Klass* super_klass = this_oop->super(); |
6983 | 854 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
855 super_klass->initialize(THREAD); | |
0 | 856 |
857 if (HAS_PENDING_EXCEPTION) { | |
858 Handle e(THREAD, PENDING_EXCEPTION); | |
859 CLEAR_PENDING_EXCEPTION; | |
860 { | |
861 EXCEPTION_MARK; | |
862 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
863 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
864 } | |
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865 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 866 THROW_OOP(e()); |
867 } | |
868 } | |
869 | |
6934 | 870 if (this_oop->has_default_methods()) { |
871 // Step 7.5: initialize any interfaces which have default methods | |
872 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
873 Klass* iface = this_oop->local_interfaces()->at(i); | |
874 InstanceKlass* ik = InstanceKlass::cast(iface); | |
875 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
876 ik->initialize(THREAD); | |
877 | |
878 if (HAS_PENDING_EXCEPTION) { | |
879 Handle e(THREAD, PENDING_EXCEPTION); | |
880 CLEAR_PENDING_EXCEPTION; | |
881 { | |
882 EXCEPTION_MARK; | |
883 // Locks object, set state, and notify all waiting threads | |
884 this_oop->set_initialization_state_and_notify( | |
885 initialization_error, THREAD); | |
886 | |
887 // ignore any exception thrown, superclass initialization error is | |
888 // thrown below | |
889 CLEAR_PENDING_EXCEPTION; | |
890 } | |
891 DTRACE_CLASSINIT_PROBE_WAIT( | |
892 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
893 THROW_OOP(e()); | |
894 } | |
895 } | |
896 } | |
897 } | |
898 | |
0 | 899 // Step 8 |
900 { | |
901 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
902 JavaThread* jt = (JavaThread*)THREAD; | |
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903 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 904 // Timer includes any side effects of class initialization (resolution, |
905 // etc), but not recursive entry into call_class_initializer(). | |
875
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906 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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907 ClassLoader::perf_class_init_selftime(), |
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908 ClassLoader::perf_classes_inited(), |
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909 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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910 jt->get_thread_stat()->perf_timers_addr(), |
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911 PerfClassTraceTime::CLASS_CLINIT); |
0 | 912 this_oop->call_class_initializer(THREAD); |
913 } | |
914 | |
915 // Step 9 | |
916 if (!HAS_PENDING_EXCEPTION) { | |
917 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
918 { ResourceMark rm(THREAD); | |
919 debug_only(this_oop->vtable()->verify(tty, true);) | |
920 } | |
921 } | |
922 else { | |
923 // Step 10 and 11 | |
924 Handle e(THREAD, PENDING_EXCEPTION); | |
925 CLEAR_PENDING_EXCEPTION; | |
926 { | |
927 EXCEPTION_MARK; | |
928 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
929 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
930 } | |
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931 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 932 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 933 THROW_OOP(e()); |
934 } else { | |
935 JavaCallArguments args(e); | |
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936 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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937 vmSymbols::throwable_void_signature(), |
0 | 938 &args); |
939 } | |
940 } | |
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941 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 942 } |
943 | |
944 | |
945 // Note: implementation moved to static method to expose the this pointer. | |
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946 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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947 instanceKlassHandle kh(THREAD, this); |
0 | 948 set_initialization_state_and_notify_impl(kh, state, CHECK); |
949 } | |
950 | |
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951 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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952 oop init_lock = this_oop->init_lock(); |
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953 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 954 this_oop->set_init_state(state); |
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955 this_oop->fence_and_clear_init_lock(); |
0 | 956 ol.notify_all(CHECK); |
957 } | |
958 | |
5998
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959 // The embedded _implementor field can only record one implementor. |
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960 // When there are more than one implementors, the _implementor field |
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961 // is set to the interface Klass* itself. Following are the possible |
5998
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962 // values for the _implementor field: |
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963 // NULL - no implementor |
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964 // implementor Klass* - one implementor |
5998
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965 // self - more than one implementor |
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966 // |
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967 // The _implementor field only exists for interfaces. |
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968 void InstanceKlass::add_implementor(Klass* k) { |
0 | 969 assert(Compile_lock->owned_by_self(), ""); |
5998
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970 assert(is_interface(), "not interface"); |
0 | 971 // Filter out my subinterfaces. |
972 // (Note: Interfaces are never on the subklass list.) | |
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973 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 974 |
975 // Filter out subclasses whose supers already implement me. | |
976 // (Note: CHA must walk subclasses of direct implementors | |
977 // in order to locate indirect implementors.) | |
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978 Klass* sk = InstanceKlass::cast(k)->super(); |
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979 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 980 // We only need to check one immediate superclass, since the |
981 // implements_interface query looks at transitive_interfaces. | |
982 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
983 return; | |
984 | |
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985 Klass* ik = implementor(); |
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986 if (ik == NULL) { |
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987 set_implementor(k); |
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988 } else if (ik != this) { |
5998
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989 // There is already an implementor. Use itself as an indicator of |
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990 // more than one implementors. |
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991 set_implementor(this); |
0 | 992 } |
993 | |
994 // The implementor also implements the transitive_interfaces | |
995 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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996 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 997 } |
998 } | |
999 | |
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1000 void InstanceKlass::init_implementor() { |
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1001 if (is_interface()) { |
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1002 set_implementor(NULL); |
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1003 } |
0 | 1004 } |
1005 | |
1006 | |
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1007 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1008 // link this class into the implementors list of every interface it implements |
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1009 Klass* this_as_klass_oop = this; |
0 | 1010 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1011 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1012 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1013 assert(interf->is_interface(), "expected interface"); |
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1014 interf->add_implementor(this_as_klass_oop); |
0 | 1015 } |
1016 } | |
1017 | |
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1018 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1019 if (is_interface()) |
1020 return false; | |
1021 else | |
1022 return Klass::can_be_primary_super_slow(); | |
1023 } | |
1024 | |
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1025 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1026 // The secondaries are the implemented interfaces. |
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1027 InstanceKlass* ik = InstanceKlass::cast(this); |
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1028 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1029 int num_secondaries = num_extra_slots + interfaces->length(); |
1030 if (num_secondaries == 0) { | |
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1031 // Must share this for correct bootstrapping! |
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1032 set_secondary_supers(Universe::the_empty_klass_array()); |
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1033 return NULL; |
0 | 1034 } else if (num_extra_slots == 0) { |
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1035 // The secondary super list is exactly the same as the transitive interfaces. |
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1036 // Redefine classes has to be careful not to delete this! |
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1037 set_secondary_supers(interfaces); |
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1038 return NULL; |
0 | 1039 } else { |
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1040 // Copy transitive interfaces to a temporary growable array to be constructed |
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1041 // into the secondary super list with extra slots. |
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1042 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1043 for (int i = 0; i < interfaces->length(); i++) { |
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1044 secondaries->push(interfaces->at(i)); |
0 | 1045 } |
1046 return secondaries; | |
1047 } | |
1048 } | |
1049 | |
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1050 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1051 if (k->is_interface()) { |
0 | 1052 return implements_interface(k); |
1053 } else { | |
1054 return Klass::compute_is_subtype_of(k); | |
1055 } | |
1056 } | |
1057 | |
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1058 bool InstanceKlass::implements_interface(Klass* k) const { |
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1059 if (this == k) return true; |
6983 | 1060 assert(k->is_interface(), "should be an interface class"); |
0 | 1061 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1062 if (transitive_interfaces()->at(i) == k) { |
0 | 1063 return true; |
1064 } | |
1065 } | |
1066 return false; | |
1067 } | |
1068 | |
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1069 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1070 // Verify direct super interface |
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1071 if (this == k) return true; |
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1072 assert(k->is_interface(), "should be an interface class"); |
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1073 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1074 if (local_interfaces()->at(i) == k) { |
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1075 return true; |
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1076 } |
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1077 } |
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1078 return false; |
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1079 } |
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1080 |
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1081 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1082 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1083 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1084 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1085 JvmtiExport::post_array_size_exhausted(); |
0 | 1086 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1087 } | |
1088 int size = objArrayOopDesc::object_size(length); | |
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1089 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1090 KlassHandle h_ak (THREAD, ak); |
1091 objArrayOop o = | |
1092 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1093 return o; | |
1094 } | |
1095 | |
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1096 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1097 if (TraceFinalizerRegistration) { |
1098 tty->print("Registered "); | |
1099 i->print_value_on(tty); | |
1100 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1101 } | |
1102 instanceHandle h_i(THREAD, i); | |
1103 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1104 JavaValue result(T_VOID); | |
1105 JavaCallArguments args(h_i); | |
1106 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1107 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1108 return h_i(); | |
1109 } | |
1110 | |
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1111 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1112 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1113 int size = size_helper(); // Query before forming handle. | |
1114 | |
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1115 KlassHandle h_k(THREAD, this); |
0 | 1116 |
1117 instanceOop i; | |
1118 | |
1119 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1120 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1121 i = register_finalizer(i, CHECK_NULL); | |
1122 } | |
1123 return i; | |
1124 } | |
1125 | |
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1126 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1127 if (is_interface() || is_abstract()) { |
1128 ResourceMark rm(THREAD); | |
1129 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1130 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1131 } | |
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1132 if (this == SystemDictionary::Class_klass()) { |
0 | 1133 ResourceMark rm(THREAD); |
1134 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1135 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1136 } | |
1137 } | |
1138 | |
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1139 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1140 instanceKlassHandle this_oop(THREAD, this); |
0 | 1141 return array_klass_impl(this_oop, or_null, n, THREAD); |
1142 } | |
1143 | |
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1144 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1145 if (this_oop->array_klasses() == NULL) { |
1146 if (or_null) return NULL; | |
1147 | |
1148 ResourceMark rm; | |
1149 JavaThread *jt = (JavaThread *)THREAD; | |
1150 { | |
1151 // Atomic creation of array_klasses | |
1152 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1153 MutexLocker ma(MultiArray_lock, THREAD); | |
1154 | |
1155 // Check if update has already taken place | |
1156 if (this_oop->array_klasses() == NULL) { | |
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1157 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1158 this_oop->set_array_klasses(k); |
1159 } | |
1160 } | |
1161 } | |
1162 // _this will always be set at this point | |
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1163 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1164 if (or_null) { |
1165 return oak->array_klass_or_null(n); | |
1166 } | |
1167 return oak->array_klass(n, CHECK_NULL); | |
1168 } | |
1169 | |
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1170 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1171 return array_klass_impl(or_null, 1, THREAD); |
1172 } | |
1173 | |
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1174 void InstanceKlass::call_class_initializer(TRAPS) { |
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1175 instanceKlassHandle ik (THREAD, this); |
0 | 1176 call_class_initializer_impl(ik, THREAD); |
1177 } | |
1178 | |
1179 static int call_class_initializer_impl_counter = 0; // for debugging | |
1180 | |
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1181 Method* InstanceKlass::class_initializer() { |
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1182 Method* clinit = find_method( |
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1183 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1184 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1185 return clinit; |
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1186 } |
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1187 return NULL; |
0 | 1188 } |
1189 | |
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1190 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1191 if (ReplayCompiles && |
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1192 (ReplaySuppressInitializers == 1 || |
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1193 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1194 // Hide the existence of the initializer for the purpose of replaying the compile |
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1195 return; |
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1196 } |
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1197 |
0 | 1198 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1199 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1200 if (TraceClassInitialization) { | |
1201 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1202 this_oop->name()->print_value(); | |
1203 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1204 } | |
1205 if (h_method() != NULL) { | |
1206 JavaCallArguments args; // No arguments | |
1207 JavaValue result(T_VOID); | |
1208 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1209 } | |
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1210 |
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1211 #ifdef GRAAL |
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1212 if (SystemDictionary::Node_klass() != NULL && this_oop->is_subtype_of(SystemDictionary::Node_klass())) { |
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1213 if (this_oop() != SystemDictionary::Node_klass()) { |
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1214 if (!GraalRuntime::is_HotSpotGraalRuntime_initialized() && JavaAssertions::systemClassDefault() == false) { |
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1215 // We want to ensure that the process of initializing HotSpotGraalRuntime |
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1216 // is fast since it executes at VM startup. We must avoid triggering |
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1217 // class initialization of any Node classes during this process. |
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1218 ResourceMark rm; |
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1219 char buf[200]; |
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1220 jio_snprintf(buf, sizeof(buf), "Node subclass %s must not be initialized before HotSpotGraalRuntime is initialized", this_oop->name()->as_C_string()); |
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1221 THROW_MSG(vmSymbols::java_lang_InternalError(), buf); |
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1222 } |
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1223 // Create the NodeClass for a Node subclass. |
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1224 TempNewSymbol sig = SymbolTable::new_symbol("(Ljava/lang/Class;)Lcom/oracle/graal/graph/NodeClass;", CHECK); |
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1225 JavaValue result(T_OBJECT); |
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1226 JavaCalls::call_static(&result, SystemDictionary::NodeClass_klass(), vmSymbols::get_name(), sig, this_oop->java_mirror(), CHECK); |
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1227 this_oop->set_graal_node_class((oop) result.get_jobject()); |
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1228 } else { |
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1229 // A NodeClass cannot be created for Node due to checks in |
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1230 // NodeClass.FieldScanner.scanField() |
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1231 } |
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1232 } |
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1233 #endif |
0 | 1234 } |
1235 | |
1236 | |
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1237 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1238 InterpreterOopMap* entry_for) { |
1239 // Dirty read, then double-check under a lock. | |
1240 if (_oop_map_cache == NULL) { | |
1241 // Otherwise, allocate a new one. | |
1242 MutexLocker x(OopMapCacheAlloc_lock); | |
1243 // First time use. Allocate a cache in C heap | |
1244 if (_oop_map_cache == NULL) { | |
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1245 // Release stores from OopMapCache constructor before assignment |
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1246 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1247 // required memory barrier only because of the volatile |
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1248 // qualifier of _oop_map_cache. |
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1249 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1250 } |
1251 } | |
1252 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1253 _oop_map_cache->lookup(method, bci, entry_for); | |
1254 } | |
1255 | |
1256 | |
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1257 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1258 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1259 Symbol* f_name = fs.name(); |
1260 Symbol* f_sig = fs.signature(); | |
0 | 1261 if (f_name == name && f_sig == sig) { |
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1262 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1263 return true; |
1264 } | |
1265 } | |
1266 return false; | |
1267 } | |
1268 | |
1269 | |
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1270 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1271 const int n = local_interfaces()->length(); |
1272 for (int i = 0; i < n; i++) { | |
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1273 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1274 assert(intf1->is_interface(), "just checking type"); |
0 | 1275 // search for field in current interface |
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1276 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1277 assert(fd->is_static(), "interface field must be static"); |
1278 return intf1; | |
1279 } | |
1280 // search for field in direct superinterfaces | |
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1281 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1282 if (intf2 != NULL) return intf2; |
1283 } | |
1284 // otherwise field lookup fails | |
1285 return NULL; | |
1286 } | |
1287 | |
1288 | |
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1289 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1290 // search order according to newest JVM spec (5.4.3.2, p.167). |
1291 // 1) search for field in current klass | |
1292 if (find_local_field(name, sig, fd)) { | |
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1293 return const_cast<InstanceKlass*>(this); |
0 | 1294 } |
1295 // 2) search for field recursively in direct superinterfaces | |
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1296 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1297 if (intf != NULL) return intf; |
1298 } | |
1299 // 3) apply field lookup recursively if superclass exists | |
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1300 { Klass* supr = super(); |
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1301 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1302 } |
1303 // 4) otherwise field lookup fails | |
1304 return NULL; | |
1305 } | |
1306 | |
1307 | |
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1308 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1309 // search order according to newest JVM spec (5.4.3.2, p.167). |
1310 // 1) search for field in current klass | |
1311 if (find_local_field(name, sig, fd)) { | |
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1312 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1313 } |
1314 // 2) search for field recursively in direct superinterfaces | |
1315 if (is_static) { | |
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1316 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1317 if (intf != NULL) return intf; |
1318 } | |
1319 // 3) apply field lookup recursively if superclass exists | |
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1320 { Klass* supr = super(); |
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1321 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1322 } |
1323 // 4) otherwise field lookup fails | |
1324 return NULL; | |
1325 } | |
1326 | |
1327 | |
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1328 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1329 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1330 if (fs.offset() == offset) { |
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1331 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1332 if (fd->is_static() == is_static) return true; |
1333 } | |
1334 } | |
1335 return false; | |
1336 } | |
1337 | |
1338 | |
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1339 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1340 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1341 while (klass != NULL) { |
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1342 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1343 return true; |
1344 } | |
6983 | 1345 klass = klass->super(); |
0 | 1346 } |
1347 return false; | |
1348 } | |
1349 | |
1350 | |
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1351 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1352 int len = methods()->length(); |
1353 for (int index = 0; index < len; index++) { | |
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1354 Method* m = methods()->at(index); |
0 | 1355 assert(m->is_method(), "must be method"); |
1356 f(m); | |
1357 } | |
1358 } | |
1359 | |
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1360 |
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1361 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1362 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1363 if (fs.access_flags().is_static()) { | |
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1364 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1365 cl->do_field(&fd); |
1366 } | |
0 | 1367 } |
1368 } | |
1369 | |
1370 | |
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1371 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1372 instanceKlassHandle h_this(THREAD, this); |
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1373 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1374 } |
1375 | |
1376 | |
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1377 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1378 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1379 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1380 if (fs.access_flags().is_static()) { |
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1381 fieldDescriptor& fd = fs.field_descriptor(); |
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1382 f(&fd, mirror, CHECK); |
3938 | 1383 } |
0 | 1384 } |
1385 } | |
1386 | |
1387 | |
44
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1388 static int compare_fields_by_offset(int* a, int* b) { |
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1389 return a[0] - b[0]; |
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1390 } |
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1391 |
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1392 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1393 InstanceKlass* super = superklass(); |
0 | 1394 if (super != NULL) { |
1395 super->do_nonstatic_fields(cl); | |
1396 } | |
44
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1397 fieldDescriptor fd; |
3938 | 1398 int length = java_fields_count(); |
44
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1399 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1400 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1401 int j = 0; |
3938 | 1402 for (int i = 0; i < length; i += 1) { |
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1403 fd.reinitialize(this, i); |
44
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1404 if (!fd.is_static()) { |
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1405 fields_sorted[j + 0] = fd.offset(); |
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1406 fields_sorted[j + 1] = i; |
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1407 j += 2; |
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1408 } |
0 | 1409 } |
44
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1410 if (j > 0) { |
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1411 length = j; |
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1412 // _sort_Fn is defined in growableArray.hpp. |
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1413 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1414 for (int i = 0; i < length; i += 2) { |
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1415 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1416 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1417 cl->do_field(&fd); |
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1418 } |
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1419 } |
6197 | 1420 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1421 } |
1422 | |
1423 | |
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1424 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1425 if (array_klasses() != NULL) |
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1426 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1427 } |
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1428 |
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1429 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1430 if (array_klasses() != NULL) |
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1431 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1432 } |
1433 | |
1434 #ifdef ASSERT | |
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1435 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1436 int len = methods->length(); |
1437 for (int index = 0; index < len; index++) { | |
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1438 Method* m = methods->at(index); |
0 | 1439 assert(m->is_method(), "must be method"); |
1440 if (m->signature() == signature && m->name() == name) { | |
1441 return index; | |
1442 } | |
1443 } | |
1444 return -1; | |
1445 } | |
1446 #endif | |
1447 | |
6934 | 1448 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1449 int len = methods->length(); |
1450 // methods are sorted, so do binary search | |
1451 int l = 0; | |
1452 int h = len - 1; | |
1453 while (l <= h) { | |
1454 int mid = (l + h) >> 1; | |
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1455 Method* m = methods->at(mid); |
0 | 1456 assert(m->is_method(), "must be method"); |
1457 int res = m->name()->fast_compare(name); | |
1458 if (res == 0) { | |
6934 | 1459 return mid; |
0 | 1460 } else if (res < 0) { |
1461 l = mid + 1; | |
1462 } else { | |
1463 h = mid - 1; | |
1464 } | |
1465 } | |
6934 | 1466 return -1; |
1467 } | |
1468 | |
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1469 // find_method looks up the name/signature in the local methods array |
6934 | 1470 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1471 return find_method_impl(name, signature, false); |
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1472 } |
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1473 |
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1474 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
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1475 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass); |
6934 | 1476 } |
1477 | |
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1478 // find_instance_method looks up the name/signature in the local methods array |
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1479 // and skips over static methods |
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1480 Method* InstanceKlass::find_instance_method( |
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1481 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1482 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1483 if (meth != NULL && meth->is_static()) { |
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1484 meth = NULL; |
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1485 } |
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1486 return meth; |
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1487 } |
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1488 |
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1489 // find_method looks up the name/signature in the local methods array |
6934 | 1490 Method* InstanceKlass::find_method( |
1491 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1492 return InstanceKlass::find_method_impl(methods, name, signature, false); |
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1493 } |
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1494 |
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1495 Method* InstanceKlass::find_method_impl( |
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1496 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
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1497 int hit = find_method_index(methods, name, signature, skipping_overpass); |
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1498 return hit >= 0 ? methods->at(hit): NULL; |
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1499 } |
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1500 |
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1501 // Used directly for default_methods to find the index into the |
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1502 // default_vtable_indices, and indirectly by find_method |
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1503 // find_method_index looks in the local methods array to return the index |
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1504 // of the matching name/signature. If, overpass methods are being ignored, |
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1505 // the search continues to find a potential non-overpass match. This capability |
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1506 // is important during method resolution to prefer a static method, for example, |
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1507 // over an overpass method. |
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1508 int InstanceKlass::find_method_index( |
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|
1509 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
6934 | 1510 int hit = binary_search(methods, name); |
1511 if (hit != -1) { | |
1512 Method* m = methods->at(hit); | |
1513 // Do linear search to find matching signature. First, quick check | |
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|
1514 // for common case, ignoring overpasses if requested. |
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1515 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return hit; |
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1516 |
6934 | 1517 // search downwards through overloaded methods |
1518 int i; | |
1519 for (i = hit - 1; i >= 0; --i) { | |
1520 Method* m = methods->at(i); | |
1521 assert(m->is_method(), "must be method"); | |
1522 if (m->name() != name) break; | |
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1523 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1524 } |
1525 // search upwards | |
1526 for (i = hit + 1; i < methods->length(); ++i) { | |
1527 Method* m = methods->at(i); | |
1528 assert(m->is_method(), "must be method"); | |
1529 if (m->name() != name) break; | |
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1530 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1531 } |
1532 // not found | |
0 | 1533 #ifdef ASSERT |
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1534 int index = skipping_overpass ? -1 : linear_search(methods, name, signature); |
6934 | 1535 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1536 #endif |
6934 | 1537 } |
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1538 return -1; |
0 | 1539 } |
6934 | 1540 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1541 return find_method_by_name(methods(), name, end); | |
1542 } | |
1543 | |
1544 int InstanceKlass::find_method_by_name( | |
1545 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1546 assert(end_ptr != NULL, "just checking"); | |
1547 int start = binary_search(methods, name); | |
1548 int end = start + 1; | |
1549 if (start != -1) { | |
1550 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1551 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1552 *end_ptr = end; | |
1553 return start; | |
1554 } | |
1555 return -1; | |
1556 } | |
1557 | |
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1558 // uncached_lookup_method searches both the local class methods array and all |
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1559 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1560 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1561 MethodLookupMode lookup_mode = mode; |
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1562 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1563 while (klass != NULL) { |
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1564 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1565 if (method != NULL) { |
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1566 return method; |
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|
1567 } |
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1568 klass = InstanceKlass::cast(klass)->super(); |
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1569 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1570 } |
1571 return NULL; | |
1572 } | |
1573 | |
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1574 // lookup a method in the default methods list then in all transitive interfaces |
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1575 // Do NOT return private or static methods |
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1576 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1577 Symbol* signature) const { |
12828
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|
1578 Method* m = NULL; |
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|
1579 if (default_methods() != NULL) { |
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|
1580 m = find_method(default_methods(), name, signature); |
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|
1581 } |
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|
1582 // Look up interfaces |
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|
1583 if (m == NULL) { |
17889
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|
1584 m = lookup_method_in_all_interfaces(name, signature, normal); |
12823
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|
1585 } |
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|
1586 return m; |
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|
1587 } |
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|
1588 |
0 | 1589 // lookup a method in all the interfaces that this class implements |
12318
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|
1590 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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|
1591 // They should only be found in the initial InterfaceMethodRef |
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1592 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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|
1593 Symbol* signature, |
17889
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|
1594 MethodLookupMode mode) const { |
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|
1595 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1596 int num_ifs = all_ifs->length(); |
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|
1597 InstanceKlass *ik = NULL; |
0 | 1598 for (int i = 0; i < num_ifs; i++) { |
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|
1599 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1600 Method* m = ik->lookup_method(name, signature); |
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1601 if (m != NULL && m->is_public() && !m->is_static() && |
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|
1602 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1603 return m; |
1604 } | |
1605 } | |
1606 return NULL; | |
1607 } | |
1608 | |
1609 /* jni_id_for_impl for jfieldIds only */ | |
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1610 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1611 MutexLocker ml(JfieldIdCreation_lock); |
1612 // Retry lookup after we got the lock | |
1613 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1614 if (probe == NULL) { | |
1615 // Slow case, allocate new static field identifier | |
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1616 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1617 this_oop->set_jni_ids(probe); |
1618 } | |
1619 return probe; | |
1620 } | |
1621 | |
1622 | |
1623 /* jni_id_for for jfieldIds only */ | |
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1624 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1625 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1626 if (probe == NULL) { | |
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1627 probe = jni_id_for_impl(this, offset); |
0 | 1628 } |
1629 return probe; | |
1630 } | |
1631 | |
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1632 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1633 Array<jushort>* inner_class_list = inner_classes(); |
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|
1634 if (inner_class_list == NULL) { |
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|
1635 return 0; |
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|
1636 } |
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|
1637 int length = inner_class_list->length(); |
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|
1638 if (length % inner_class_next_offset == 0) { |
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|
1639 return 0; |
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|
1640 } else { |
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|
1641 int index = length - enclosing_method_attribute_size; |
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|
1642 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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|
1643 return inner_class_list->at(index + offset); |
5967
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|
1644 } |
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|
1645 } |
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|
1646 |
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|
1647 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
5967
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|
1648 u2 method_index) { |
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|
1649 Array<jushort>* inner_class_list = inner_classes(); |
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|
1650 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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|
1651 int length = inner_class_list->length(); |
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|
1652 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
f7c4174b33ba
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|
1653 int index = length - enclosing_method_attribute_size; |
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|
1654 inner_class_list->at_put( |
5967
f7c4174b33ba
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|
1655 index + enclosing_method_class_index_offset, class_index); |
6725
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|
1656 inner_class_list->at_put( |
5967
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4739
diff
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|
1657 index + enclosing_method_method_index_offset, method_index); |
f7c4174b33ba
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diff
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|
1658 } |
f7c4174b33ba
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|
1659 } |
0 | 1660 |
1661 // Lookup or create a jmethodID. | |
977
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|
1662 // This code is called by the VMThread and JavaThreads so the |
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|
1663 // locking has to be done very carefully to avoid deadlocks |
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|
1664 // and/or other cache consistency problems. |
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|
1665 // |
6725
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|
1666 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1667 size_t idnum = (size_t)method_h->method_idnum(); |
1668 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1669 size_t length = 0; | |
1670 jmethodID id = NULL; | |
977
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|
1671 |
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|
1672 // We use a double-check locking idiom here because this cache is |
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|
1673 // performance sensitive. In the normal system, this cache only |
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|
1674 // transitions from NULL to non-NULL which is safe because we use |
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|
1675 // release_set_methods_jmethod_ids() to advertise the new cache. |
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|
1676 // A partially constructed cache should never be seen by a racing |
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|
1677 // thread. We also use release_store_ptr() to save a new jmethodID |
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|
1678 // in the cache so a partially constructed jmethodID should never be |
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|
1679 // seen either. Cache reads of existing jmethodIDs proceed without a |
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|
1680 // lock, but cache writes of a new jmethodID requires uniqueness and |
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|
1681 // creation of the cache itself requires no leaks so a lock is |
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|
1682 // generally acquired in those two cases. |
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|
1683 // |
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|
1684 // If the RedefineClasses() API has been used, then this cache can |
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|
1685 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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|
1686 // Cache creation requires no leaks and we require safety between all |
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|
1687 // cache accesses and freeing of the old cache so a lock is generally |
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|
1688 // acquired when the RedefineClasses() API has been used. |
0 | 1689 |
977
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|
1690 if (jmeths != NULL) { |
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|
1691 // the cache already exists |
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|
1692 if (!ik_h->idnum_can_increment()) { |
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|
1693 // the cache can't grow so we can just get the current values |
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|
1694 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1695 } else { |
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|
1696 // cache can grow so we have to be more careful |
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|
1697 if (Threads::number_of_threads() == 0 || |
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|
1698 SafepointSynchronize::is_at_safepoint()) { |
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|
1699 // we're single threaded or at a safepoint - no locking needed |
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|
1700 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1701 } else { |
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|
1702 MutexLocker ml(JmethodIdCreation_lock); |
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|
1703 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1704 } |
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|
1705 } |
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|
1706 } |
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|
1707 // implied else: |
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|
1708 // we need to allocate a cache so default length and id values are good |
0 | 1709 |
977
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|
1710 if (jmeths == NULL || // no cache yet |
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|
1711 length <= idnum || // cache is too short |
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|
1712 id == NULL) { // cache doesn't contain entry |
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|
1713 |
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|
1714 // This function can be called by the VMThread so we have to do all |
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|
1715 // things that might block on a safepoint before grabbing the lock. |
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|
1716 // Otherwise, we can deadlock with the VMThread or have a cache |
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|
1717 // consistency issue. These vars keep track of what we might have |
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|
1718 // to free after the lock is dropped. |
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|
1719 jmethodID to_dealloc_id = NULL; |
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|
1720 jmethodID* to_dealloc_jmeths = NULL; |
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|
1721 |
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|
1722 // may not allocate new_jmeths or use it if we allocate it |
0 | 1723 jmethodID* new_jmeths = NULL; |
1724 if (length <= idnum) { | |
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1725 // allocate a new cache that might be used |
0 | 1726 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1727 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1728 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1729 // cache size is stored in element[0], other elements offset by one |
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1730 new_jmeths[0] = (jmethodID)size; |
0 | 1731 } |
1732 | |
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1733 // allocate a new jmethodID that might be used |
0 | 1734 jmethodID new_id = NULL; |
1735 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1736 // The method passed in is old (but not obsolete), we need to use the current version | |
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1737 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1738 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1739 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1740 } else { |
1741 // It is the current version of the method or an obsolete method, | |
1742 // use the version passed in | |
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1743 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1744 } |
1745 | |
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1746 if (Threads::number_of_threads() == 0 || |
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1747 SafepointSynchronize::is_at_safepoint()) { |
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1748 // we're single threaded or at a safepoint - no locking needed |
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1749 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1750 &to_dealloc_id, &to_dealloc_jmeths); |
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1751 } else { |
0 | 1752 MutexLocker ml(JmethodIdCreation_lock); |
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1753 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1754 &to_dealloc_id, &to_dealloc_jmeths); |
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1755 } |
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1756 |
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1757 // The lock has been dropped so we can free resources. |
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1758 // Free up either the old cache or the new cache if we allocated one. |
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1759 if (to_dealloc_jmeths != NULL) { |
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1760 FreeHeap(to_dealloc_jmeths); |
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1761 } |
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1762 // free up the new ID since it wasn't needed |
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1763 if (to_dealloc_id != NULL) { |
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1764 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1765 } |
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1766 } |
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1767 return id; |
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1768 } |
0 | 1769 |
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1770 |
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1771 // Common code to fetch the jmethodID from the cache or update the |
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1772 // cache with the new jmethodID. This function should never do anything |
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1773 // that causes the caller to go to a safepoint or we can deadlock with |
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1774 // the VMThread or have cache consistency issues. |
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1775 // |
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1776 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1777 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1778 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1779 jmethodID** to_dealloc_jmeths_p) { |
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1780 assert(new_id != NULL, "sanity check"); |
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1781 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1782 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1783 assert(Threads::number_of_threads() == 0 || |
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1784 SafepointSynchronize::is_at_safepoint() || |
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1785 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1786 |
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1787 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1788 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1789 jmethodID id = NULL; |
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1790 size_t length = 0; |
0 | 1791 |
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1792 if (jmeths == NULL || // no cache yet |
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1793 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1794 if (jmeths != NULL) { |
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1795 // copy any existing entries from the old cache |
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1796 for (size_t index = 0; index < length; index++) { |
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1797 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1798 } |
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1799 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1800 } |
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1801 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1802 } else { |
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1803 // fetch jmethodID (if any) from the existing cache |
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1804 id = jmeths[idnum+1]; |
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1805 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1806 } |
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1807 if (id == NULL) { |
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1808 // No matching jmethodID in the existing cache or we have a new |
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1809 // cache or we just grew the cache. This cache write is done here |
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1810 // by the first thread to win the foot race because a jmethodID |
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1811 // needs to be unique once it is generally available. |
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1812 id = new_id; |
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1813 |
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1814 // The jmethodID cache can be read while unlocked so we have to |
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1815 // make sure the new jmethodID is complete before installing it |
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1816 // in the cache. |
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1817 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1818 } else { |
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1819 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1820 } |
1821 return id; | |
1822 } | |
1823 | |
1824 | |
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1825 // Common code to get the jmethodID cache length and the jmethodID |
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1826 // value at index idnum if there is one. |
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1827 // |
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1828 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1829 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1830 assert(cache != NULL, "sanity check"); |
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1831 assert(length_p != NULL, "sanity check"); |
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1832 assert(id_p != NULL, "sanity check"); |
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1833 |
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1834 // cache size is stored in element[0], other elements offset by one |
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1835 *length_p = (size_t)cache[0]; |
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1836 if (*length_p <= idnum) { // cache is too short |
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1837 *id_p = NULL; |
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1838 } else { |
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1839 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1840 } |
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1841 } |
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1842 |
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1843 |
0 | 1844 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1845 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1846 size_t idnum = (size_t)method->method_idnum(); |
1847 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1848 size_t length; // length assigned as debugging crumb | |
1849 jmethodID id = NULL; | |
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1850 if (jmeths != NULL && // If there is a cache |
0 | 1851 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1852 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1853 } | |
1854 return id; | |
1855 } | |
1856 | |
1857 | |
1858 // | |
1859 // Walk the list of dependent nmethods searching for nmethods which | |
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1860 // are dependent on the changes that were passed in and mark them for |
0 | 1861 // deoptimization. Returns the number of nmethods found. |
1862 // | |
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1863 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1864 assert_locked_or_safepoint(CodeCache_lock); |
1865 int found = 0; | |
1866 nmethodBucket* b = _dependencies; | |
1867 while (b != NULL) { | |
1868 nmethod* nm = b->get_nmethod(); | |
1869 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1870 // the dependency list may contain nmethods which aren't alive. | |
1871 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1872 if (TraceDependencies) { | |
1873 ResourceMark rm; | |
1874 tty->print_cr("Marked for deoptimization"); | |
1875 tty->print_cr(" context = %s", this->external_name()); | |
1876 changes.print(); | |
1877 nm->print(); | |
1878 nm->print_dependencies(); | |
1879 } | |
1880 nm->mark_for_deoptimization(); | |
1881 found++; | |
1882 } | |
1883 b = b->next(); | |
1884 } | |
1885 return found; | |
1886 } | |
1887 | |
1888 | |
1889 // | |
1890 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1891 // It's possible that an nmethod has multiple dependencies on this klass | |
1892 // so a count is kept for each bucket to guarantee that creation and | |
1893 // deletion of dependencies is consistent. | |
1894 // | |
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1895 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1896 assert_locked_or_safepoint(CodeCache_lock); |
1897 nmethodBucket* b = _dependencies; | |
1898 nmethodBucket* last = NULL; | |
1899 while (b != NULL) { | |
1900 if (nm == b->get_nmethod()) { | |
1901 b->increment(); | |
1902 return; | |
1903 } | |
1904 b = b->next(); | |
1905 } | |
1906 _dependencies = new nmethodBucket(nm, _dependencies); | |
1907 } | |
1908 | |
1909 | |
1910 // | |
1911 // Decrement count of the nmethod in the dependency list and remove | |
1912 // the bucket competely when the count goes to 0. This method must | |
1913 // find a corresponding bucket otherwise there's a bug in the | |
1914 // recording of dependecies. | |
1915 // | |
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1916 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1917 assert_locked_or_safepoint(CodeCache_lock); |
1918 nmethodBucket* b = _dependencies; | |
1919 nmethodBucket* last = NULL; | |
1920 while (b != NULL) { | |
1921 if (nm == b->get_nmethod()) { | |
1922 if (b->decrement() == 0) { | |
1923 if (last == NULL) { | |
1924 _dependencies = b->next(); | |
1925 } else { | |
1926 last->set_next(b->next()); | |
1927 } | |
1928 delete b; | |
1929 } | |
1930 return; | |
1931 } | |
1932 last = b; | |
1933 b = b->next(); | |
1934 } | |
1935 #ifdef ASSERT | |
1936 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1937 nm->print(); | |
1938 #endif // ASSERT | |
1939 ShouldNotReachHere(); | |
1940 } | |
1941 | |
1942 | |
1943 #ifndef PRODUCT | |
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1944 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1945 nmethodBucket* b = _dependencies; |
1946 int idx = 0; | |
1947 while (b != NULL) { | |
1948 nmethod* nm = b->get_nmethod(); | |
1949 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1950 if (!verbose) { | |
1951 nm->print_on(tty, "nmethod"); | |
1952 tty->print_cr(" } "); | |
1953 } else { | |
1954 nm->print(); | |
1955 nm->print_dependencies(); | |
1956 tty->print_cr("--- } "); | |
1957 } | |
1958 b = b->next(); | |
1959 } | |
1960 } | |
1961 | |
1962 | |
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1963 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1964 nmethodBucket* b = _dependencies; |
1965 while (b != NULL) { | |
1966 if (nm == b->get_nmethod()) { | |
1967 return true; | |
1968 } | |
1969 b = b->next(); | |
1970 } | |
1971 return false; | |
1972 } | |
1973 #endif //PRODUCT | |
1974 | |
1975 | |
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1976 // Garbage collection |
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1977 |
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1978 #ifdef ASSERT |
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1979 template <class T> void assert_is_in(T *p) { |
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1980 T heap_oop = oopDesc::load_heap_oop(p); |
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1981 if (!oopDesc::is_null(heap_oop)) { |
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1982 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1983 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1984 } |
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1985 } |
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1986 template <class T> void assert_is_in_closed_subset(T *p) { |
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1987 T heap_oop = oopDesc::load_heap_oop(p); |
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1988 if (!oopDesc::is_null(heap_oop)) { |
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1989 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1990 assert(Universe::heap()->is_in_closed_subset(o), |
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1991 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
113
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1992 } |
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1993 } |
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1994 template <class T> void assert_is_in_reserved(T *p) { |
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1995 T heap_oop = oopDesc::load_heap_oop(p); |
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1996 if (!oopDesc::is_null(heap_oop)) { |
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1997 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1998 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1999 } |
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2000 } |
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2001 template <class T> void assert_nothing(T *p) {} |
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2002 |
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2003 #else |
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2004 template <class T> void assert_is_in(T *p) {} |
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2005 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2006 template <class T> void assert_is_in_reserved(T *p) {} |
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2007 template <class T> void assert_nothing(T *p) {} |
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2008 #endif // ASSERT |
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2009 |
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2010 // |
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2011 // Macros that iterate over areas of oops which are specialized on type of |
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2012 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2013 // |
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2014 // Parameters are: |
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2015 // T - type of oop to point to (either oop or narrowOop) |
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2016 // start_p - starting pointer for region to iterate over |
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2017 // count - number of oops or narrowOops to iterate over |
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2018 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2019 // makes it more efficient to put in a macro rather than making |
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2020 // it a template function) |
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2021 // assert_fn - assert function which is template function because performance |
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2022 // doesn't matter when enabled. |
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2023 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2024 T, start_p, count, do_oop, \ |
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2025 assert_fn) \ |
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2026 { \ |
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2027 T* p = (T*)(start_p); \ |
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2028 T* const end = p + (count); \ |
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2029 while (p < end) { \ |
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2030 (assert_fn)(p); \ |
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2031 do_oop; \ |
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2032 ++p; \ |
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2033 } \ |
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2034 } |
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2035 |
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2036 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2037 T, start_p, count, do_oop, \ |
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2038 assert_fn) \ |
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2039 { \ |
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2040 T* const start = (T*)(start_p); \ |
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2041 T* p = start + (count); \ |
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2042 while (start < p) { \ |
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2043 --p; \ |
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2044 (assert_fn)(p); \ |
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2045 do_oop; \ |
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2046 } \ |
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2047 } |
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2048 |
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2049 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2050 T, start_p, count, low, high, \ |
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2051 do_oop, assert_fn) \ |
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2052 { \ |
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2053 T* const l = (T*)(low); \ |
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2054 T* const h = (T*)(high); \ |
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2055 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2056 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2057 "bounded region must be properly aligned"); \ |
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2058 T* p = (T*)(start_p); \ |
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2059 T* end = p + (count); \ |
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2060 if (p < l) p = l; \ |
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2061 if (end > h) end = h; \ |
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2062 while (p < end) { \ |
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2063 (assert_fn)(p); \ |
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2064 do_oop; \ |
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2065 ++p; \ |
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2066 } \ |
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2067 } |
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2068 |
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2069 |
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2070 // The following macros call specialized macros, passing either oop or |
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2071 // narrowOop as the specialization type. These test the UseCompressedOops |
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2072 // flag. |
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2073 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2074 { \ |
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2075 /* Compute oopmap block range. The common case \ |
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2076 is nonstatic_oop_map_size == 1. */ \ |
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2077 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2078 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2079 if (UseCompressedOops) { \ |
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2080 while (map < end_map) { \ |
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2081 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2082 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2083 do_oop, assert_fn) \ |
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2084 ++map; \ |
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2085 } \ |
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2086 } else { \ |
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2087 while (map < end_map) { \ |
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2088 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2089 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2090 do_oop, assert_fn) \ |
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2091 ++map; \ |
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2092 } \ |
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2093 } \ |
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2094 } |
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2095 |
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2096 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2097 { \ |
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2098 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2099 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2100 if (UseCompressedOops) { \ |
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2101 while (start_map < map) { \ |
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2102 --map; \ |
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2103 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2104 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2105 do_oop, assert_fn) \ |
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2106 } \ |
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2107 } else { \ |
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2108 while (start_map < map) { \ |
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2109 --map; \ |
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2110 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2111 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2112 do_oop, assert_fn) \ |
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2113 } \ |
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2114 } \ |
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2115 } |
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2116 |
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2117 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2118 assert_fn) \ |
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2119 { \ |
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2120 /* Compute oopmap block range. The common case is \ |
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2121 nonstatic_oop_map_size == 1, so we accept the \ |
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2122 usually non-existent extra overhead of examining \ |
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2123 all the maps. */ \ |
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2124 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2125 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2126 if (UseCompressedOops) { \ |
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2127 while (map < end_map) { \ |
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2128 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2129 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2130 low, high, \ |
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2131 do_oop, assert_fn) \ |
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2132 ++map; \ |
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2133 } \ |
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2134 } else { \ |
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2135 while (map < end_map) { \ |
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2136 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2137 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2138 low, high, \ |
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2139 do_oop, assert_fn) \ |
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2140 ++map; \ |
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2141 } \ |
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2142 } \ |
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2143 } |
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2144 |
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2145 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2146 assert(obj != NULL, "can't follow the content of NULL object"); |
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2147 MarkSweep::follow_klass(obj->klass()); |
113
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2148 InstanceKlass_OOP_MAP_ITERATE( \ |
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2149 obj, \ |
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2150 MarkSweep::mark_and_push(p), \ |
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2151 assert_is_in_closed_subset) |
0 | 2152 } |
2153 | |
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2154 #if INCLUDE_ALL_GCS |
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2155 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2156 oop obj) { |
113
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2157 assert(obj != NULL, "can't follow the content of NULL object"); |
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2158 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2159 // Only mark the header and let the scan of the meta-data mark |
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2160 // everything else. |
113
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2161 InstanceKlass_OOP_MAP_ITERATE( \ |
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2162 obj, \ |
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2163 PSParallelCompact::mark_and_push(cm, p), \ |
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2164 assert_is_in) |
0 | 2165 } |
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2166 #endif // INCLUDE_ALL_GCS |
0 | 2167 |
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2168 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2169 // applied to the klass ptr in the object header. |
2170 | |
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2171 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2172 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2173 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2174 "Inconsistency in do_metadata"); \ |
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2175 if (closure->do_metadata##nv_suffix()) |
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2176 |
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2177 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2178 \ |
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2179 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2180 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2181 /* header */ \ |
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2182 if_do_metadata_checked(closure, nv_suffix) { \ |
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2183 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2184 } \ |
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2185 InstanceKlass_OOP_MAP_ITERATE( \ |
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2186 obj, \ |
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2187 SpecializationStats:: \ |
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2188 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2189 (closure)->do_oop##nv_suffix(p), \ |
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2190 assert_is_in_closed_subset) \ |
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2191 return size_helper(); \ |
0 | 2192 } |
2193 | |
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2194 #if INCLUDE_ALL_GCS |
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2195 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2196 \ |
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2197 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2198 OopClosureType* closure) { \ |
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2199 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2200 /* header */ \ |
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2201 if_do_metadata_checked(closure, nv_suffix) { \ |
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2202 closure->do_klass##nv_suffix(obj->klass()); \ |
342
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2203 } \ |
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2204 /* instance variables */ \ |
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2205 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2206 obj, \ |
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2207 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2208 (closure)->do_oop##nv_suffix(p), \ |
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2209 assert_is_in_closed_subset) \ |
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2210 return size_helper(); \ |
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2211 } |
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2212 #endif // INCLUDE_ALL_GCS |
342
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2213 |
113
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2214 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2215 \ |
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2216 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2217 OopClosureType* closure, \ |
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2218 MemRegion mr) { \ |
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2219 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2220 if_do_metadata_checked(closure, nv_suffix) { \ |
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2221 if (mr.contains(obj)) { \ |
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2222 closure->do_klass##nv_suffix(obj->klass()); \ |
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2223 } \ |
113
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2224 } \ |
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2225 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2226 obj, mr.start(), mr.end(), \ |
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2227 (closure)->do_oop##nv_suffix(p), \ |
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2228 assert_is_in_closed_subset) \ |
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2229 return size_helper(); \ |
0 | 2230 } |
2231 | |
2232 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2233 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2234 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2235 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2236 #if INCLUDE_ALL_GCS |
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2237 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2238 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2239 #endif // INCLUDE_ALL_GCS |
0 | 2240 |
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2241 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2242 int size = size_helper(); |
113
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2243 InstanceKlass_OOP_MAP_ITERATE( \ |
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2244 obj, \ |
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2245 MarkSweep::adjust_pointer(p), \ |
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2246 assert_is_in) |
0 | 2247 return size; |
2248 } | |
2249 | |
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2250 #if INCLUDE_ALL_GCS |
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2251 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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2252 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2253 obj, \ |
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2254 if (PSScavenge::should_scavenge(p)) { \ |
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2255 pm->claim_or_forward_depth(p); \ |
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2256 }, \ |
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2257 assert_nothing ) |
0 | 2258 } |
2259 | |
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2260 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2261 int size = size_helper(); |
113
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2262 InstanceKlass_OOP_MAP_ITERATE( \ |
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2263 obj, \ |
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2264 PSParallelCompact::adjust_pointer(p), \ |
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2265 assert_is_in) |
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2266 return size; |
0 | 2267 } |
2268 | |
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2269 #endif // INCLUDE_ALL_GCS |
0 | 2270 |
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2271 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2272 assert(is_loader_alive(is_alive), "this klass should be live"); |
5998
49036505ab5f
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|
2273 if (is_interface()) { |
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2274 if (ClassUnloading) { |
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2275 Klass* impl = implementor(); |
5998
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2276 if (impl != NULL) { |
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2277 if (!impl->is_loader_alive(is_alive)) { |
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|
2278 // remove this guy |
8693
872b3feace55
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|
2279 Klass** klass = adr_implementor(); |
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|
2280 assert(klass != NULL, "null klass"); |
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|
2281 if (klass != NULL) { |
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|
2282 *klass = NULL; |
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2283 } |
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2284 } |
0 | 2285 } |
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2286 } |
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2287 } |
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2288 } |
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2289 |
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2290 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2291 for (int m = 0; m < methods()->length(); m++) { |
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2292 MethodData* mdo = methods()->at(m)->method_data(); |
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|
2293 if (mdo != NULL) { |
17728
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|
2294 mdo->clean_method_data(is_alive); |
0 | 2295 } |
2296 } | |
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2297 } |
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2298 |
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2299 |
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2300 static void remove_unshareable_in_class(Klass* k) { |
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2301 // remove klass's unshareable info |
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2302 k->remove_unshareable_info(); |
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2303 } |
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2304 |
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2305 void InstanceKlass::remove_unshareable_info() { |
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2306 Klass::remove_unshareable_info(); |
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2307 // Unlink the class |
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2308 if (is_linked()) { |
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2309 unlink_class(); |
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2310 } |
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2311 init_implementor(); |
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2312 |
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|
2313 #ifdef GRAAL |
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|
2314 set_graal_node_class(NULL); |
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|
2315 #endif |
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2316 |
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2317 constants()->remove_unshareable_info(); |
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2318 |
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2319 for (int i = 0; i < methods()->length(); i++) { |
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2320 Method* m = methods()->at(i); |
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2321 m->remove_unshareable_info(); |
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2322 } |
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|
2323 |
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|
2324 // do array classes also. |
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|
2325 array_klasses_do(remove_unshareable_in_class); |
0 | 2326 } |
2327 | |
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2328 void restore_unshareable_in_class(Klass* k, TRAPS) { |
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2329 k->restore_unshareable_info(CHECK); |
0 | 2330 } |
2331 | |
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2332 void InstanceKlass::restore_unshareable_info(TRAPS) { |
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2333 Klass::restore_unshareable_info(CHECK); |
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2334 instanceKlassHandle ik(THREAD, this); |
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2335 |
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2336 Array<Method*>* methods = ik->methods(); |
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2337 int num_methods = methods->length(); |
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2338 for (int index2 = 0; index2 < num_methods; ++index2) { |
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2339 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2340 m->restore_unshareable_info(CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2341 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2342 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2343 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2344 // entries in this vtable for super classes so the CDS vtable might |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2345 // point to old or obsolete entries. RedefineClasses doesn't fix up |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2346 // vtables in the shared system dictionary, only the main one. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2347 // It also redefines the itable too so fix that too. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2348 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2349 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2350 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2351 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2352 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2353 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2354 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2355 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2356 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2357 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2359 static void clear_all_breakpoints(Method* m) { |
0 | 2360 m->clear_all_breakpoints(); |
2361 } | |
2362 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2363 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2364 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2365 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2366 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2367 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2368 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2369 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2370 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2371 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2372 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2373 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2374 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2375 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2376 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2377 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2378 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2379 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2380 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2381 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2382 // Can't release the constant pool here because the constant pool can be |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2383 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2384 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2385 |
0 | 2386 // Deallocate oop map cache |
2387 if (_oop_map_cache != NULL) { | |
2388 delete _oop_map_cache; | |
2389 _oop_map_cache = NULL; | |
2390 } | |
2391 | |
2392 // Deallocate JNI identifiers for jfieldIDs | |
2393 JNIid::deallocate(jni_ids()); | |
2394 set_jni_ids(NULL); | |
2395 | |
2396 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2397 if (jmeths != (jmethodID*)NULL) { | |
2398 release_set_methods_jmethod_ids(NULL); | |
2399 FreeHeap(jmeths); | |
2400 } | |
2401 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2402 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2403 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2404 Mutex* lock_or_null = SafepointSynchronize::is_at_safepoint() ? NULL : MemberNameTable_lock; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2405 MutexLockerEx ml(lock_or_null, Mutex::_no_safepoint_check_flag); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2406 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2407 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2408 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2409 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2410 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2411 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2412 |
0 | 2413 // release dependencies |
2414 nmethodBucket* b = _dependencies; | |
2415 _dependencies = NULL; | |
2416 while (b != NULL) { | |
2417 nmethodBucket* next = b->next(); | |
2418 delete b; | |
2419 b = next; | |
2420 } | |
2421 | |
2422 // Deallocate breakpoint records | |
2423 if (breakpoints() != 0x0) { | |
2424 methods_do(clear_all_breakpoints); | |
2425 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2426 } | |
2427 | |
2428 // deallocate information about previous versions | |
2429 if (_previous_versions != NULL) { | |
2430 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2431 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2432 delete pv_node; | |
2433 } | |
2434 delete _previous_versions; | |
2435 _previous_versions = NULL; | |
2436 } | |
2437 | |
2438 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2439 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2440 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2441 _cached_class_file = NULL; |
0 | 2442 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2443 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2444 // 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
|
2445 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2446 // 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
|
2447 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2448 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
|
2449 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
|
2450 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2451 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2452 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2453 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2454 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2455 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
|
2456 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2457 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2458 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2459 // 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
|
2460 // 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
|
2461 // 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
|
2462 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2463 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2464 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
|
2465 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2466 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2467 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2468 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2469 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2470 } |
0 | 2471 } |
2472 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2473 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2474 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
|
2475 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2476 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2477 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2478 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2479 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2480 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2481 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2482 // 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
|
2483 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2484 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2485 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
|
2486 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2487 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2488 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2489 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2490 // Get the internal name as a c string |
0 | 2491 const char* src = (const char*) (name()->as_C_string()); |
2492 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2493 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2494 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
|
2495 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2496 // Add L as type indicator |
0 | 2497 int dest_index = 0; |
2498 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2499 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2500 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2501 for (int src_index = 0; src_index < src_length; ) { |
0 | 2502 dest[dest_index++] = src[src_index++]; |
2503 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2504 |
e64f1fe9756b
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|
2505 // If we have a hash, append it |
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|
2506 for (int hash_index = 0; hash_index < hash_len; ) { |
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|
2507 dest[dest_index++] = hash_buf[hash_index++]; |
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|
2508 } |
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|
2509 |
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|
2510 // Add the semicolon and the NULL |
0 | 2511 dest[dest_index++] = ';'; |
2512 dest[dest_index] = '\0'; | |
2513 return dest; | |
2514 } | |
2515 | |
2516 // different verisons of is_same_class_package | |
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2517 bool InstanceKlass::is_same_class_package(Klass* class2) { |
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2518 Klass* class1 = this; |
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2519 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2520 Symbol* classname1 = class1->name(); |
2521 | |
2522 if (class2->oop_is_objArray()) { | |
6831
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6735
diff
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|
2523 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2524 } |
2525 oop classloader2; | |
6983 | 2526 if (class2->oop_is_instance()) { |
6725
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2527 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2528 } else { |
6983 | 2529 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2530 classloader2 = NULL; |
2531 } | |
6983 | 2532 Symbol* classname2 = class2->name(); |
0 | 2533 |
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2534 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2535 classloader2, classname2); |
2536 } | |
2537 | |
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2538 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
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2539 Klass* class1 = this; |
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|
2540 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2541 Symbol* classname1 = class1->name(); |
0 | 2542 |
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2543 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2544 classloader2, classname2); |
2545 } | |
2546 | |
2547 // return true if two classes are in the same package, classloader | |
2548 // and classname information is enough to determine a class's package | |
6725
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2549 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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|
2550 oop class_loader2, Symbol* class_name2) { |
0 | 2551 if (class_loader1 != class_loader2) { |
2552 return false; | |
665
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|
2553 } else if (class_name1 == class_name2) { |
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|
2554 return true; // skip painful bytewise comparison |
0 | 2555 } else { |
2556 ResourceMark rm; | |
2557 | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2558 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2559 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2560 // Otherwise, we just compare jbyte values between the strings. | |
2177
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|
2561 const jbyte *name1 = class_name1->base(); |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2562 const jbyte *name2 = class_name2->base(); |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2563 |
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diff
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|
2564 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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diff
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|
2565 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2566 |
2567 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2568 // One of the two doesn't have a package. Only return true | |
2569 // if the other one also doesn't have a package. | |
2570 return last_slash1 == last_slash2; | |
2571 } else { | |
2572 // Skip over '['s | |
2573 if (*name1 == '[') { | |
2574 do { | |
2575 name1++; | |
2576 } while (*name1 == '['); | |
2577 if (*name1 != 'L') { | |
2578 // Something is terribly wrong. Shouldn't be here. | |
2579 return false; | |
2580 } | |
2581 } | |
2582 if (*name2 == '[') { | |
2583 do { | |
2584 name2++; | |
2585 } while (*name2 == '['); | |
2586 if (*name2 != 'L') { | |
2587 // Something is terribly wrong. Shouldn't be here. | |
2588 return false; | |
2589 } | |
2590 } | |
2591 | |
2592 // Check that package part is identical | |
2593 int length1 = last_slash1 - name1; | |
2594 int length2 = last_slash2 - name2; | |
2595 | |
2596 return UTF8::equal(name1, length1, name2, length2); | |
2597 } | |
2598 } | |
2599 } | |
2600 | |
652
4aaa9f5e02a8
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acorn
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605
diff
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|
2601 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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diff
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|
2602 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
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diff
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|
2603 // Assumes name-signature match |
6725
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|
2604 // "this" is InstanceKlass of super_method which must exist |
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|
2605 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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|
2606 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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diff
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|
2607 // Private methods can not be overridden |
4aaa9f5e02a8
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|
2608 if (super_method->is_private()) { |
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605
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|
2609 return false; |
4aaa9f5e02a8
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605
diff
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|
2610 } |
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605
diff
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|
2611 // If super method is accessible, then override |
4aaa9f5e02a8
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605
diff
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|
2612 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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parents:
605
diff
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|
2613 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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parents:
605
diff
changeset
|
2614 return true; |
4aaa9f5e02a8
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acorn
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605
diff
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|
2615 } |
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605
diff
changeset
|
2616 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
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605
diff
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|
2617 assert(super_method->is_package_private(), "must be package private"); |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2618 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
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605
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|
2619 } |
0 | 2620 |
665
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|
2621 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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6266
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|
2622 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
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|
2623 Symbol*& simple_name_result, TRAPS) { |
665
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6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2624 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2625 } |
c89f86385056
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diff
changeset
|
2626 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2627 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2628 // tell if two classes have the same enclosing class (at package level) |
6725
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6964458: Reimplement class meta-data storage to use native memory
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6266
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|
2629 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2630 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2631 if (class2_oop == class1()) return true; |
6983 | 2632 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2633 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2634 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2635 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2636 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2637 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2638 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2639 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2640 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2641 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2642 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2643 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2644 // Eventually, the walks will terminate as outer1 stops |
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jrose
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diff
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|
2645 // 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
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1039
diff
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|
2646 bool ignore_inner_is_member; |
6725
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|
2647 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
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1039
diff
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|
2648 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2649 if (next == NULL) break; |
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diff
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|
2650 if (next == class2()) return true; |
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|
2651 outer1 = instanceKlassHandle(THREAD, next); |
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|
2652 } |
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|
2653 |
c89f86385056
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diff
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|
2654 // Now do the same for class2. |
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6814659: separable cleanups and subroutines for 6655638
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605
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|
2655 instanceKlassHandle outer2 = class2; |
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|
2656 for (;;) { |
1126
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xlu
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1039
diff
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|
2657 bool ignore_inner_is_member; |
6725
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|
2658 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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1039
diff
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|
2659 CHECK_false); |
665
c89f86385056
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605
diff
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|
2660 if (next == NULL) break; |
c89f86385056
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605
diff
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|
2661 // Might as well check the new outer against all available values. |
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6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2662 if (next == class1()) return true; |
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605
diff
changeset
|
2663 if (next == outer1()) return true; |
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605
diff
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|
2664 outer2 = instanceKlassHandle(THREAD, next); |
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jrose
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diff
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|
2665 } |
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|
2666 |
c89f86385056
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605
diff
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|
2667 // If by this point we have not found an equality between the |
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6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2668 // two classes, we know they are in separate package members. |
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605
diff
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|
2669 return false; |
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605
diff
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|
2670 } |
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|
2671 |
0 | 2672 |
6725
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coleenp
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6266
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|
2673 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2674 jint access = access_flags().as_int(); |
2675 | |
2676 // But check if it happens to be member class. | |
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6266
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|
2677 instanceKlassHandle ik(THREAD, this); |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2678 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
changeset
|
2679 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
changeset
|
2680 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
|
2681 // 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
|
2682 // 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
|
2683 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2684 |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2685 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
changeset
|
2686 // 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.
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|
2687 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
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diff
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|
2688 if ((ik->name() == inner_name)) { |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2689 // This is really a member class. |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2690 access = iter.inner_access_flags(); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2691 break; |
0 | 2692 } |
2693 } | |
2694 // Remember to strip ACC_SUPER bit | |
2695 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2696 } | |
2697 | |
6725
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|
2698 jint InstanceKlass::jvmti_class_status() const { |
0 | 2699 jint result = 0; |
2700 | |
2701 if (is_linked()) { | |
2702 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2703 } | |
2704 | |
2705 if (is_initialized()) { | |
2706 assert(is_linked(), "Class status is not consistent"); | |
2707 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2708 } | |
2709 if (is_in_error_state()) { | |
2710 result |= JVMTI_CLASS_STATUS_ERROR; | |
2711 } | |
2712 return result; | |
2713 } | |
2714 | |
6725
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2715 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2716 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2717 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2718 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2719 / itableOffsetEntry::size(); | |
2720 | |
2721 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2722 // If the interface isn't implemented by the receiver class, |
0 | 2723 // the VM should throw IncompatibleClassChangeError. |
2724 if (cnt >= nof_interfaces) { | |
6725
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2725 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2726 } |
2727 | |
6725
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2728 Klass* ik = ioe->interface_klass(); |
0 | 2729 if (ik == holder) break; |
2730 } | |
2731 | |
6725
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2732 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2733 Method* m = ime[index].method(); |
0 | 2734 if (m == NULL) { |
6725
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2735 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2736 } |
2737 return m; | |
2738 } | |
2739 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2740 |
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|
2741 #if INCLUDE_JVMTI |
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|
2742 // update default_methods for redefineclasses for methods that are |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2743 // not yet in the vtable due to concurrent subclass define and superinterface |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2744 // redefinition |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2745 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
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|
2746 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2747 int methods_length, bool* trace_name_printed) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
2748 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2749 if (default_methods() != NULL) { |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2750 for (int j = 0; j < methods_length; j++) { |
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
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|
2751 Method* old_method = old_methods[j]; |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
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|
2752 Method* new_method = new_methods[j]; |
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
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|
2753 |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2754 for (int index = 0; index < default_methods()->length(); index ++) { |
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parents:
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|
2755 if (default_methods()->at(index) == old_method) { |
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diff
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|
2756 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
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|
2757 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2758 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2759 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
2760 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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|
2761 external_name(), |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2762 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2763 *trace_name_printed = true; |
ac9cb1d5a202
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acorn
parents:
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diff
changeset
|
2764 } |
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parents:
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diff
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|
2765 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
ac9cb1d5a202
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diff
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|
2766 new_method->name()->as_C_string(), |
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|
2767 new_method->signature()->as_C_string())); |
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parents:
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diff
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|
2768 } |
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acorn
parents:
12811
diff
changeset
|
2769 } |
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parents:
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diff
changeset
|
2770 } |
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parents:
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diff
changeset
|
2771 } |
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parents:
12811
diff
changeset
|
2772 } |
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parents:
12811
diff
changeset
|
2773 } |
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parents:
12811
diff
changeset
|
2774 #endif // INCLUDE_JVMTI |
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diff
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|
2775 |
0 | 2776 // On-stack replacement stuff |
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|
2777 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2778 // only one compilation can be active |
2779 NEEDS_CLEANUP | |
2780 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2781 OsrList_lock->lock_without_safepoint_check(); | |
2782 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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diff
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|
2783 n->set_osr_link(osr_nmethods_head()); |
0 | 2784 set_osr_nmethods_head(n); |
1783 | 2785 // Raise the highest osr level if necessary |
2786 if (TieredCompilation) { | |
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|
2787 Method* m = n->method(); |
1783 | 2788 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2789 } | |
0 | 2790 // Remember to unlock again |
2791 OsrList_lock->unlock(); | |
1783 | 2792 |
2793 // Get rid of the osr methods for the same bci that have lower levels. | |
2794 if (TieredCompilation) { | |
2795 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2796 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2797 if (inv != NULL && inv->is_in_use()) { | |
2798 inv->make_not_entrant(); | |
2799 } | |
2800 } | |
2801 } | |
0 | 2802 } |
2803 | |
2804 | |
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da91efe96a93
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diff
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|
2805 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2806 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2807 OsrList_lock->lock_without_safepoint_check(); | |
2808 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2809 nmethod* last = NULL; | |
2810 nmethod* cur = osr_nmethods_head(); | |
1783 | 2811 int max_level = CompLevel_none; // Find the max comp level excluding n |
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|
2812 Method* m = n->method(); |
0 | 2813 // Search for match |
2814 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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17937
diff
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|
2815 if (TieredCompilation && m == cur->method()) { |
1783 | 2816 // Find max level before n |
2817 max_level = MAX2(max_level, cur->comp_level()); | |
2818 } | |
0 | 2819 last = cur; |
989
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diff
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|
2820 cur = cur->osr_link(); |
0 | 2821 } |
1783 | 2822 nmethod* next = NULL; |
0 | 2823 if (cur == n) { |
1783 | 2824 next = cur->osr_link(); |
0 | 2825 if (last == NULL) { |
2826 // Remove first element | |
1783 | 2827 set_osr_nmethods_head(next); |
0 | 2828 } else { |
1783 | 2829 last->set_osr_link(next); |
0 | 2830 } |
2831 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
changeset
|
2832 n->set_osr_link(NULL); |
1783 | 2833 if (TieredCompilation) { |
2834 cur = next; | |
2835 while (cur != NULL) { | |
2836 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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17937
diff
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|
2837 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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17937
diff
changeset
|
2838 max_level = MAX2(max_level, cur->comp_level()); |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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17937
diff
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|
2839 } |
1783 | 2840 cur = cur->osr_link(); |
2841 } | |
2842 m->set_highest_osr_comp_level(max_level); | |
2843 } | |
0 | 2844 // Remember to unlock again |
2845 OsrList_lock->unlock(); | |
2846 } | |
2847 | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2848 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2849 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2850 OsrList_lock->lock_without_safepoint_check(); | |
2851 nmethod* osr = osr_nmethods_head(); | |
1783 | 2852 nmethod* best = NULL; |
0 | 2853 while (osr != NULL) { |
2854 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2855 // There can be a time when a c1 osr method exists but we are waiting |
2856 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2857 // the c1 version and only be able to find the c2 version. However | |
2858 // while we overflow in the c1 code at back branches we don't want to | |
2859 // try and switch to the same code as we are already running | |
2860 | |
0 | 2861 if (osr->method() == m && |
2862 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2863 if (match_level) { |
2864 if (osr->comp_level() == comp_level) { | |
2865 // Found a match - return it. | |
2866 OsrList_lock->unlock(); | |
2867 return osr; | |
2868 } | |
2869 } else { | |
2870 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2871 if (osr->comp_level() == CompLevel_highest_tier) { | |
2872 // Found the best possible - return it. | |
2873 OsrList_lock->unlock(); | |
2874 return osr; | |
2875 } | |
2876 best = osr; | |
2877 } | |
2878 } | |
0 | 2879 } |
989
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changeset
|
2880 osr = osr->osr_link(); |
0 | 2881 } |
2882 OsrList_lock->unlock(); | |
1783 | 2883 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2884 return best; | |
2885 } | |
0 | 2886 return NULL; |
2887 } | |
2888 | |
10345
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|
2889 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
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9062
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|
2890 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
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9062
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|
2891 MutexLocker ml(MemberNameTable_lock); |
10345
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|
2892 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
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changeset
|
2893 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
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|
2894 |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
2895 if (_member_names == NULL) { |
10345
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|
2896 _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
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|
2897 } |
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|
2898 _member_names->add_member_name(index, mem_name_wref); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2899 } |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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changeset
|
2900 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2901 oop InstanceKlass::get_member_name(int index) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2902 MutexLocker ml(MemberNameTable_lock); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2903 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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|
2904 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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|
2905 |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2906 if (_member_names == NULL) { |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2907 return NULL; |
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|
2908 } |
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|
2909 oop mem_name =_member_names->get_member_name(index); |
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|
2910 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2911 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2912 |
0 | 2913 // ----------------------------------------------------------------------------------------------------- |
6725
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changeset
|
2914 // Printing |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2915 |
0 | 2916 #ifndef PRODUCT |
2917 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2918 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2919 |
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|
2920 static const char* state_names[] = { |
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diff
changeset
|
2921 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2922 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2923 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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12067
diff
changeset
|
2924 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
|
2925 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
|
2926 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
2927 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
|
2928 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
|
2929 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2930 ((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
|
2931 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2932 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2933 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
12067
diff
changeset
|
2934 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
2935 |
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6964458: Reimplement class meta-data storage to use native memory
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|
2936 void InstanceKlass::print_on(outputStream* st) const { |
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|
2937 assert(is_klass(), "must be klass"); |
da91efe96a93
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|
2938 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2939 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2940 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
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|
2941 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2942 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
|
2943 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
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changeset
|
2944 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2945 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
2946 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2947 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2948 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2949 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2950 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2951 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2952 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2953 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2954 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2956 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2957 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2958 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2959 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
|
2960 if (nof_implementors() == 1) { |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
2961 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2962 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2963 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2964 st->cr(); |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
2965 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2966 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2967 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2968 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2969 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
|
2970 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2971 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2972 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
|
2973 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2974 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2975 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2976 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
|
2977 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
|
2978 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2979 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2980 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2981 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
|
2982 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2983 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2984 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2985 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
|
2986 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2987 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
|
2988 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
|
2989 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
|
2990 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 st->cr(); |
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"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
|
2996 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2997 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2998 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3001 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3002 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3003 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3004 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3005 } |
8031 | 3006 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3007 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3008 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3009 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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coleenp
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6266
diff
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|
3010 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3011 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3012 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3013 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
|
3014 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
|
3015 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3016 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3017 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3018 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
|
3019 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3020 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3021 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3022 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3023 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3025 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3026 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3027 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3028 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
|
3029 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
|
3030 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
|
3031 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
|
3032 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
|
3033 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
|
3034 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
|
3035 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3036 ((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
|
3037 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
|
3038 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3039 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3040 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3041 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3042 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3043 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3044 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3045 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
|
3046 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3047 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3048 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3049 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3050 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3051 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3052 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3053 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3054 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
|
3055 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
|
3056 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3057 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3058 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3059 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3060 |
0 | 3061 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3062 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3063 if (_obj == NULL) { |
0 | 3064 fd->print_on(_st); |
3065 _st->cr(); | |
3066 } else { | |
3067 fd->print_on_for(_st, _obj); | |
3068 _st->cr(); | |
3069 } | |
3070 } | |
3071 | |
3072 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3073 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3074 Klass::oop_print_on(obj, st); |
3075 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3076 if (this == SystemDictionary::String_klass()) { |
0 | 3077 typeArrayOop value = java_lang_String::value(obj); |
3078 juint offset = java_lang_String::offset(obj); | |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3079 if (value != NULL) { |
0 | 3080 juint length = java_lang_String::length(obj); |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3081 if (value->is_typeArray() && |
0 | 3082 offset <= (juint) value->length() && |
3083 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3084 st->print(BULLET"string: "); |
0 | 3085 Handle h_obj(obj); |
3086 java_lang_String::print(h_obj, st); | |
3087 st->cr(); | |
3088 if (!WizardMode) return; // that is enough | |
3089 } | |
3090 } | |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3091 } |
0 | 3092 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3093 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
|
3094 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3095 do_nonstatic_fields(&print_field); |
0 | 3096 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3097 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3098 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3099 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3100 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3101 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3102 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3103 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3104 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3105 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3106 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3107 array_klass->print_value_on_maybe_null(st); |
0 | 3108 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3109 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
|
3110 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3111 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3112 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3113 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
|
3114 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3115 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3116 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3117 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3118 st->cr(); |
0 | 3119 } |
3120 } | |
3121 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3122 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3123 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3124 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3125 st->print("a "); |
3126 name()->print_value_on(st); | |
3127 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3128 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3129 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3130 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3131 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3132 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3133 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3134 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3135 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3136 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3137 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3138 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3139 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3140 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3141 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3142 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3143 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3144 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3145 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3146 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3147 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3148 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3149 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3150 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3151 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3152 } 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
|
3153 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
|
3154 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3155 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3156 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3157 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3158 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3159 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
|
3160 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3161 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3162 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3163 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3164 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3165 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3166 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3167 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3168 } |
0 | 3169 } |
3170 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3171 const char* InstanceKlass::internal_name() const { |
0 | 3172 return external_name(); |
3173 } | |
3174 | |
7956 | 3175 #if INCLUDE_SERVICES |
3176 // Size Statistics | |
3177 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3178 Klass::collect_statistics(sz); | |
3179 | |
3180 sz->_inst_size = HeapWordSize * size_helper(); | |
3181 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3182 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3183 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3184 ((is_interface() || is_anonymous()) ? | |
3185 align_object_offset(nonstatic_oop_map_size()) : | |
3186 nonstatic_oop_map_size()); | |
3187 | |
3188 int n = 0; | |
3189 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3190 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3191 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3192 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3193 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3194 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3195 sz->_ro_bytes += n; | |
3196 | |
3197 const ConstantPool* cp = constants(); | |
3198 if (cp) { | |
3199 cp->collect_statistics(sz); | |
3200 } | |
3201 | |
3202 const Annotations* anno = annotations(); | |
3203 if (anno) { | |
3204 anno->collect_statistics(sz); | |
3205 } | |
3206 | |
3207 const Array<Method*>* methods_array = methods(); | |
3208 if (methods()) { | |
3209 for (int i = 0; i < methods_array->length(); i++) { | |
3210 Method* method = methods_array->at(i); | |
3211 if (method) { | |
3212 sz->_method_count ++; | |
3213 method->collect_statistics(sz); | |
3214 } | |
3215 } | |
3216 } | |
3217 } | |
3218 #endif // INCLUDE_SERVICES | |
3219 | |
0 | 3220 // Verification |
3221 | |
3222 class VerifyFieldClosure: public OopClosure { | |
113
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3223 protected: |
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3224 template <class T> void do_oop_work(T* p) { |
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3225 oop obj = oopDesc::load_decode_heap_oop(p); |
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3226 if (!obj->is_oop_or_null()) { |
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3227 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3228 Universe::print(); |
3229 guarantee(false, "boom"); | |
3230 } | |
3231 } | |
113
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3232 public: |
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3233 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3234 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3235 }; |
3236 | |
14378
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|
3237 void InstanceKlass::verify_on(outputStream* st) { |
6725
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3238 #ifndef PRODUCT |
11034 | 3239 // Avoid redundant verifies, this really should be in product. |
6725
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3240 if (_verify_count == Universe::verify_count()) return; |
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3241 _verify_count = Universe::verify_count(); |
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3242 #endif |
11034 | 3243 |
3244 // Verify Klass | |
14378
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3245 Klass::verify_on(st); |
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3246 |
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3247 // Verify that klass is present in ClassLoaderData |
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3248 guarantee(class_loader_data()->contains_klass(this), |
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3249 "this class isn't found in class loader data"); |
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3250 |
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3251 // Verify vtables |
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3252 if (is_linked()) { |
11034 | 3253 ResourceMark rm; |
6725
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3254 // $$$ This used to be done only for m/s collections. Doing it |
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3255 // always seemed a valid generalization. (DLD -- 6/00) |
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3256 vtable()->verify(st); |
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|
3257 } |
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|
3258 |
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3259 // Verify first subklass |
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3260 if (subklass_oop() != NULL) { |
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3261 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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3262 } |
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|
3263 |
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3264 // Verify siblings |
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3265 Klass* super = this->super(); |
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3266 Klass* sib = next_sibling(); |
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3267 if (sib != NULL) { |
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|
3268 if (sib == this) { |
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3269 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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3270 } |
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|
3271 |
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|
3272 guarantee(sib->is_klass(), "should be klass"); |
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3273 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3274 } |
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|
3275 |
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3276 // Verify implementor fields |
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3277 Klass* im = implementor(); |
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|
3278 if (im != NULL) { |
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|
3279 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3280 guarantee(im->is_klass(), "should be klass"); |
6983 | 3281 guarantee(!im->is_interface() || im == this, |
6725
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|
3282 "implementors cannot be interfaces"); |
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|
3283 } |
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|
3284 |
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3285 // Verify local interfaces |
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|
3286 if (local_interfaces()) { |
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3287 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3288 for (int j = 0; j < local_interfaces->length(); j++) { |
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3289 Klass* e = local_interfaces->at(j); |
6983 | 3290 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3291 } |
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|
3292 } |
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|
3293 |
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|
3294 // Verify transitive interfaces |
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|
3295 if (transitive_interfaces() != NULL) { |
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|
3296 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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3297 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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|
3298 Klass* e = transitive_interfaces->at(j); |
6983 | 3299 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3300 } |
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|
3301 } |
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|
3302 |
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|
3303 // Verify methods |
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|
3304 if (methods() != NULL) { |
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|
3305 Array<Method*>* methods = this->methods(); |
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3306 for (int j = 0; j < methods->length(); j++) { |
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3307 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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|
3308 } |
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|
3309 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3310 Method* m1 = methods->at(j); |
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3311 Method* m2 = methods->at(j + 1); |
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3312 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3313 } |
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|
3314 } |
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|
3315 |
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|
3316 // Verify method ordering |
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|
3317 if (method_ordering() != NULL) { |
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|
3318 Array<int>* method_ordering = this->method_ordering(); |
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3319 int length = method_ordering->length(); |
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|
3320 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
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diff
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|
3321 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
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|
3322 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3323 jlong sum = 0; |
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|
3324 for (int j = 0; j < length; j++) { |
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|
3325 int original_index = method_ordering->at(j); |
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|
3326 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3327 guarantee(original_index < length, "invalid method ordering index"); |
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|
3328 sum += original_index; |
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|
3329 } |
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|
3330 // Verify sum of indices 0,1,...,length-1 |
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|
3331 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3332 } else { |
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|
3333 guarantee(length == 0, "invalid method ordering length"); |
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|
3334 } |
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|
3335 } |
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|
3336 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
3337 // Verify default methods |
ac9cb1d5a202
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12811
diff
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|
3338 if (default_methods() != NULL) { |
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diff
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|
3339 Array<Method*>* methods = this->default_methods(); |
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acorn
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diff
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|
3340 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
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acorn
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12811
diff
changeset
|
3341 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3342 } |
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12811
diff
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|
3343 for (int j = 0; j < methods->length() - 1; j++) { |
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acorn
parents:
12811
diff
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|
3344 Method* m1 = methods->at(j); |
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12811
diff
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|
3345 Method* m2 = methods->at(j + 1); |
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acorn
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12811
diff
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|
3346 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3347 } |
ac9cb1d5a202
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acorn
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12811
diff
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|
3348 } |
ac9cb1d5a202
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acorn
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12811
diff
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|
3349 |
6725
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|
3350 // Verify JNI static field identifiers |
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|
3351 if (jni_ids() != NULL) { |
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|
3352 jni_ids()->verify(this); |
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3353 } |
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|
3354 |
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|
3355 // Verify other fields |
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|
3356 if (array_klasses() != NULL) { |
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3357 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3358 } |
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|
3359 if (constants() != NULL) { |
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3360 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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3361 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
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|
3362 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
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|
3363 if (host != NULL) { |
872b3feace55
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|
3364 guarantee(host->is_klass(), "should be klass"); |
6725
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3365 } |
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|
3366 } |
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|
3367 |
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|
3368 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3369 Klass::oop_verify_on(obj, st); |
3370 VerifyFieldClosure blk; | |
6725
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3371 obj->oop_iterate_no_header(&blk); |
0 | 3372 } |
3373 | |
6725
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3374 |
113
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|
3375 // JNIid class for jfieldIDs only |
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|
3376 // Note to reviewers: |
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3377 // These JNI functions are just moved over to column 1 and not changed |
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3378 // in the compressed oops workspace. |
6725
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3379 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3380 _holder = holder; |
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3381 _offset = offset; |
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3382 _next = next; |
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3383 debug_only(_is_static_field_id = false;) |
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3384 } |
0 | 3385 |
3386 | |
113
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|
3387 JNIid* JNIid::find(int offset) { |
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3388 JNIid* current = this; |
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|
3389 while (current != NULL) { |
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|
3390 if (current->offset() == offset) return current; |
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|
3391 current = current->next(); |
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|
3392 } |
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diff
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|
3393 return NULL; |
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|
3394 } |
0 | 3395 |
3396 void JNIid::deallocate(JNIid* current) { | |
113
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|
3397 while (current != NULL) { |
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|
3398 JNIid* next = current->next(); |
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|
3399 delete current; |
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|
3400 current = next; |
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|
3401 } |
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|
3402 } |
0 | 3403 |
3404 | |
6725
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3405 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
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|
3406 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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|
3407 int end_field_offset; |
6725
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3408 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3409 |
113
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|
3410 JNIid* current = this; |
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|
3411 while (current != NULL) { |
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diff
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|
3412 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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diff
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|
3413 #ifdef ASSERT |
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|
3414 int o = current->offset(); |
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|
3415 if (current->is_static_field_id()) { |
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|
3416 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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|
3417 } |
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diff
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|
3418 #endif |
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|
3419 current = current->next(); |
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|
3420 } |
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|
3421 } |
0 | 3422 |
3423 | |
3424 #ifdef ASSERT | |
6725
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|
3425 void InstanceKlass::set_init_state(ClassState state) { |
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3426 bool good_state = is_shared() ? (_init_state <= state) |
113
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3427 : (_init_state < state); |
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diff
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|
3428 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
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4006
diff
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|
3429 _init_state = (u1)state; |
113
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|
3430 } |
0 | 3431 #endif |
3432 | |
3433 | |
3434 // RedefineClasses() support for previous versions: | |
3435 | |
6725
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|
3436 // Purge previous versions |
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|
3437 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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|
3438 if (ik->previous_versions() != NULL) { |
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|
3439 // This klass has previous versions so see what we can cleanup |
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|
3440 // while it is safe to do so. |
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|
3441 |
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|
3442 int deleted_count = 0; // leave debugging breadcrumbs |
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|
3443 int live_count = 0; |
da91efe96a93
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|
3444 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3445 ClassLoaderData::the_null_class_loader_data() : |
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|
3446 ik->class_loader_data(); |
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|
3447 |
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|
3448 // RC_TRACE macro has an embedded ResourceMark |
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|
3449 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3450 ik->external_name(), ik->previous_versions()->length())); |
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|
3451 |
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|
3452 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3453 // check the previous versions array |
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|
3454 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3455 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3456 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3457 |
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|
3458 ConstantPool* pvcp = cp_ref; |
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|
3459 if (!pvcp->on_stack()) { |
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|
3460 // If the constant pool isn't on stack, none of the methods |
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3461 // are executing. Delete all the methods, the constant pool and |
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|
3462 // and this previous version node. |
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|
3463 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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|
3464 if (method_refs != NULL) { |
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|
3465 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3466 Method* method = method_refs->at(j); |
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|
3467 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3468 method_refs->remove_at(j); |
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|
3469 // method will be freed with associated class. |
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|
3470 } |
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|
3471 } |
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|
3472 // Remove the constant pool |
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|
3473 delete pv_node; |
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|
3474 // Since we are traversing the array backwards, we don't have to |
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|
3475 // do anything special with the index. |
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|
3476 ik->previous_versions()->remove_at(i); |
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|
3477 deleted_count++; |
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|
3478 continue; |
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|
3479 } else { |
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|
3480 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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|
3481 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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|
3482 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3483 live_count++; |
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|
3484 } |
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|
3485 |
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|
3486 // At least one method is live in this previous version, clean out |
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|
3487 // the others or mark them as obsolete. |
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|
3488 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3489 if (method_refs != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3490 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3491 method_refs->length())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3492 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3493 Method* method = method_refs->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3494 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3495 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3496 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3497 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3498 // method, mark it as obsolete but leave it to clean up later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3499 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3500 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3501 } else if (emcp_method_count == 0) { |
da91efe96a93
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coleenp
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diff
changeset
|
3502 method->set_is_obsolete(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3503 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3504 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3505 RC_TRACE(0x00000200, |
da91efe96a93
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coleenp
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diff
changeset
|
3506 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3507 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3508 method->signature()->as_C_string(), j, i)); |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3509 if (method->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3510 // Clean out any weak method links |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3511 method->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3512 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3513 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3514 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3515 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3516 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3517 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3518 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3519 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3520 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3521 } |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3522 |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3523 Array<Method*>* methods = ik->methods(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3524 int num_methods = methods->length(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3525 for (int index2 = 0; index2 < num_methods; ++index2) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3526 if (methods->at(index2)->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3527 methods->at(index2)->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3528 } |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3529 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3530 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3531 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3532 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3533 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3534 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3535 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3536 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3537 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3538 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3539 // Potentially add an information node that contains pointers to the |
0 | 3540 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3541 // This is also where we clean out any unused references. |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3542 // Note that while we delete nodes from the _previous_versions |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3543 // array, we never delete the array itself until the klass is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3544 // unloaded. The has_been_redefined() query depends on that fact. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3545 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3546 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3547 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3548 assert(Thread::current()->is_VM_thread(), |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3549 "only VMThread can add previous versions"); |
0 | 3550 |
3551 if (_previous_versions == NULL) { | |
3552 // This is the first previous version so make some space. | |
3553 // Start with 2 elements under the assumption that the class | |
3554 // won't be redefined much. | |
6197 | 3555 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3556 GrowableArray<PreviousVersionNode *>(2, true); |
3557 } | |
3558 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3559 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3560 |
0 | 3561 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3562 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3563 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3564 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3565 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3566 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3567 // If the constant pool for this previous version of the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3568 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3569 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3570 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3571 // we still need to examine older previous versions below. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3572 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3573 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3574 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3575 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3576 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3577 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3578 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3579 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3580 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3581 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3582 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3583 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3584 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3585 for (int i = 0; i < old_methods->length(); i++) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3586 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3587 // this old method is EMCP. Save it only if it's on the stack |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3588 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3589 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3590 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3591 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3592 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3593 // no more EMCP methods so bail out now |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3594 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3595 } |
0 | 3596 } |
3597 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3598 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3599 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3600 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3601 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3602 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3603 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3604 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3605 // Since the caller is the VMThread and we are at a safepoint, this |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3606 // is a good time to clear out unused references. |
0 | 3607 |
3608 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3609 _previous_versions->length())); | |
3610 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3611 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3612 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3613 |
3614 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3615 | |
3616 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3617 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3618 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3619 // clear out any matching EMCP method entries the hard way. |
3620 int local_count = 0; | |
3621 for (int i = 0; i < old_methods->length(); i++) { | |
3622 if (!emcp_methods->at(i)) { | |
3623 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3624 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3625 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3626 Symbol* m_signature = old_method->signature(); |
0 | 3627 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3628 // we might not have added the last entry |
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3629 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
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3630 // check the previous versions array for non executing obsolete methods |
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3631 PreviousVersionNode * pv_node = _previous_versions->at(j); |
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3632 |
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3633 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3634 if (method_refs == NULL) { |
3635 // We have run into a PreviousVersion generation where | |
3636 // all methods were made obsolete during that generation's | |
3637 // RedefineClasses() operation. At the time of that | |
3638 // operation, all EMCP methods were flushed so we don't | |
3639 // have to go back any further. | |
3640 // | |
3641 // A NULL method_refs is different than an empty method_refs. | |
3642 // We cannot infer any optimizations about older generations | |
3643 // from an empty method_refs for the current generation. | |
3644 break; | |
3645 } | |
3646 | |
3647 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
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3648 Method* method = method_refs->at(k); |
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3649 |
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3650 if (!method->is_obsolete() && |
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3651 method->name() == m_name && |
0 | 3652 method->signature() == m_signature) { |
3653 // The current RedefineClasses() call has made all EMCP | |
3654 // versions of this method obsolete so mark it as obsolete | |
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3655 // and remove the reference. |
0 | 3656 RC_TRACE(0x00000400, |
3657 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3658 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3659 | |
3660 method->set_is_obsolete(); | |
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3661 // Leave obsolete methods on the previous version list to |
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3662 // clean up later. |
0 | 3663 break; |
3664 } | |
3665 } | |
3666 | |
3667 // The previous loop may not find a matching EMCP method, but | |
3668 // that doesn't mean that we can optimize and not go any | |
3669 // further back in the PreviousVersion generations. The EMCP | |
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3670 // method for this generation could have already been deleted, |
0 | 3671 // but there still may be an older EMCP method that has not |
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3672 // been deleted. |
0 | 3673 } |
3674 | |
3675 if (++local_count >= obsolete_method_count) { | |
3676 // no more obsolete methods so bail out now | |
3677 break; | |
3678 } | |
3679 } | |
3680 } | |
3681 } | |
3682 } // end add_previous_version() | |
3683 | |
3684 | |
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3685 // Determine if InstanceKlass has a previous version. |
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3686 bool InstanceKlass::has_previous_version() const { |
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3687 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3688 } // end has_previous_version() |
3689 | |
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3690 |
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3691 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3692 Method* m = NULL; |
0 | 3693 if (idnum < methods()->length()) { |
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3694 m = methods()->at(idnum); |
0 | 3695 } |
3696 if (m == NULL || m->method_idnum() != idnum) { | |
3697 for (int index = 0; index < methods()->length(); ++index) { | |
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3698 m = methods()->at(index); |
0 | 3699 if (m->method_idnum() == idnum) { |
3700 return m; | |
3701 } | |
3702 } | |
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3703 // None found, return null for the caller to handle. |
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3704 return NULL; |
0 | 3705 } |
3706 return m; | |
3707 } | |
3708 | |
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3709 jint InstanceKlass::get_cached_class_file_len() { |
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3710 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3711 } |
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3712 |
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3713 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3714 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3715 } |
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3716 |
0 | 3717 |
3718 // Construct a PreviousVersionNode entry for the array hung off | |
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3719 // the InstanceKlass. |
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3720 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3721 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3722 |
3723 _prev_constant_pool = prev_constant_pool; | |
3724 _prev_EMCP_methods = prev_EMCP_methods; | |
3725 } | |
3726 | |
3727 | |
3728 // Destroy a PreviousVersionNode | |
3729 PreviousVersionNode::~PreviousVersionNode() { | |
3730 if (_prev_constant_pool != NULL) { | |
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3731 _prev_constant_pool = NULL; |
0 | 3732 } |
3733 | |
3734 if (_prev_EMCP_methods != NULL) { | |
3735 delete _prev_EMCP_methods; | |
3736 } | |
3737 } | |
3738 | |
3739 // Construct a helper for walking the previous versions array | |
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3740 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3741 _thread = thread; |
0 | 3742 _previous_versions = ik->previous_versions(); |
3743 _current_index = 0; | |
3744 _current_p = NULL; | |
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3745 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3746 } |
3747 | |
3748 | |
3749 // Return the interesting information for the next previous version | |
3750 // of the klass. Returns NULL if there are no more previous versions. | |
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3751 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3752 if (_previous_versions == NULL) { |
3753 // no previous versions so nothing to return | |
3754 return NULL; | |
3755 } | |
3756 | |
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3757 _current_p = NULL; // reset to NULL |
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3758 _current_constant_pool_handle = NULL; |
0 | 3759 |
3760 int length = _previous_versions->length(); | |
3761 | |
3762 while (_current_index < length) { | |
3763 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3764 |
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3765 // Save a handle to the constant pool for this previous version, |
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3766 // which keeps all the methods from being deallocated. |
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3767 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3768 _current_p = pv_node; |
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3769 return pv_node; |
0 | 3770 } |
3771 | |
3772 return NULL; | |
3773 } // end next_previous_version() |