Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlass.cpp @ 20512:7d68a5b1069d
8058927: ATG throws ClassNotFoundException
Summary: ClassLoader for array klass set to null and not the class loader of the component type.
Reviewed-by: dcubed, ctornqvi
author | coleenp |
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date | Fri, 26 Sep 2014 12:50:30 -0400 |
parents | 7dca5ed0e13d |
children | 90257dfad6e3 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/iterator.inline.hpp" |
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39 #include "memory/metadataFactory.hpp" |
1972 | 40 #include "memory/oopFactory.hpp" |
3938 | 41 #include "oops/fieldStreams.hpp" |
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42 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 43 #include "oops/instanceKlass.hpp" |
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44 #include "oops/instanceMirrorKlass.hpp" |
1972 | 45 #include "oops/instanceOop.hpp" |
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46 #include "oops/klass.inline.hpp" |
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47 #include "oops/method.hpp" |
1972 | 48 #include "oops/oop.inline.hpp" |
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49 #include "oops/symbol.hpp" |
1972 | 50 #include "prims/jvmtiExport.hpp" |
51 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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52 #include "prims/jvmtiRedefineClasses.hpp" |
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53 #include "prims/methodComparator.hpp" |
1972 | 54 #include "runtime/fieldDescriptor.hpp" |
55 #include "runtime/handles.inline.hpp" | |
56 #include "runtime/javaCalls.hpp" | |
57 #include "runtime/mutexLocker.hpp" | |
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58 #include "runtime/orderAccess.inline.hpp" |
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59 #include "runtime/thread.inline.hpp" |
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60 #include "services/classLoadingService.hpp" |
1972 | 61 #include "services/threadService.hpp" |
62 #include "utilities/dtrace.hpp" | |
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63 #include "utilities/macros.hpp" |
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64 #if INCLUDE_ALL_GCS |
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65 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 66 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
67 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
68 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
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69 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
1972 | 70 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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71 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 72 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
73 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
74 #include "oops/oop.pcgc.inline.hpp" | |
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75 #endif // INCLUDE_ALL_GCS |
1972 | 76 #ifdef COMPILER1 |
77 #include "c1/c1_Compiler.hpp" | |
78 #endif | |
0 | 79 |
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80 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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81 |
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82 #ifdef DTRACE_ENABLED |
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83 |
4006 | 84 #ifndef USDT2 |
85 | |
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86 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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87 char*, intptr_t, oop, intptr_t); |
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88 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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89 char*, intptr_t, oop, intptr_t, int); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 |
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103 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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104 { \ |
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105 char* data = NULL; \ |
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106 int len = 0; \ |
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107 Symbol* name = (clss)->name(); \ |
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108 if (name != NULL) { \ |
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109 data = (char*)name->bytes(); \ |
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110 len = name->utf8_length(); \ |
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111 } \ |
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112 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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113 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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114 } |
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115 |
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116 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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117 { \ |
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118 char* data = NULL; \ |
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119 int len = 0; \ |
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120 Symbol* name = (clss)->name(); \ |
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121 if (name != NULL) { \ |
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122 data = (char*)name->bytes(); \ |
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123 len = name->utf8_length(); \ |
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124 } \ |
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125 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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126 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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127 } |
4006 | 128 #else /* USDT2 */ |
129 | |
130 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
131 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
132 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
133 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
134 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
135 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
136 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
137 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
138 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
139 { \ | |
140 char* data = NULL; \ | |
141 int len = 0; \ | |
142 Symbol* name = (clss)->name(); \ | |
143 if (name != NULL) { \ | |
144 data = (char*)name->bytes(); \ | |
145 len = name->utf8_length(); \ | |
146 } \ | |
147 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
148 data, len, (clss)->class_loader(), thread_type); \ | |
149 } | |
150 | |
151 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
152 { \ | |
153 char* data = NULL; \ | |
154 int len = 0; \ | |
155 Symbol* name = (clss)->name(); \ | |
156 if (name != NULL) { \ | |
157 data = (char*)name->bytes(); \ | |
158 len = name->utf8_length(); \ | |
159 } \ | |
160 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
161 data, len, (clss)->class_loader(), thread_type, wait); \ | |
162 } | |
163 #endif /* USDT2 */ | |
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164 |
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165 #else // ndef DTRACE_ENABLED |
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166 |
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167 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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168 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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169 |
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170 #endif // ndef DTRACE_ENABLED |
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171 |
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172 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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173 |
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174 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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175 ClassLoaderData* loader_data, |
8031 | 176 int vtable_len, |
177 int itable_len, | |
178 int static_field_size, | |
179 int nonstatic_oop_map_size, | |
180 ReferenceType rt, | |
181 AccessFlags access_flags, | |
182 Symbol* name, | |
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183 Klass* super_klass, |
8031 | 184 bool is_anonymous, |
185 TRAPS) { | |
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186 |
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187 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 188 access_flags.is_interface(), is_anonymous); |
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189 |
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190 // Allocation |
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191 InstanceKlass* ik; |
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192 if (rt == REF_NONE) { |
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193 if (name == vmSymbols::java_lang_Class()) { |
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194 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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195 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 196 access_flags, is_anonymous); |
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197 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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198 (SystemDictionary::ClassLoader_klass_loaded() && |
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199 super_klass != NULL && |
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200 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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201 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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202 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 203 access_flags, is_anonymous); |
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204 } else { |
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205 // normal class |
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206 ik = new (loader_data, size, THREAD) InstanceKlass( |
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207 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 208 access_flags, is_anonymous); |
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209 } |
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210 } else { |
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211 // reference klass |
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212 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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213 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 214 access_flags, is_anonymous); |
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215 } |
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216 |
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217 // Check for pending exception before adding to the loader data and incrementing |
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218 // class count. Can get OOM here. |
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219 if (HAS_PENDING_EXCEPTION) { |
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220 return NULL; |
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221 } |
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222 |
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223 // Add all classes to our internal class loader list here, |
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224 // including classes in the bootstrap (NULL) class loader. |
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225 loader_data->add_class(ik); |
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226 |
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227 Atomic::inc(&_total_instanceKlass_count); |
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228 return ik; |
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229 } |
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230 |
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231 |
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232 // copy method ordering from resource area to Metaspace |
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233 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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234 if (m != NULL) { |
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235 // allocate a new array and copy contents (memcpy?) |
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236 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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237 for (int i = 0; i < m->length(); i++) { |
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238 _method_ordering->at_put(i, m->at(i)); |
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239 } |
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240 } else { |
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241 _method_ordering = Universe::the_empty_int_array(); |
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242 } |
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243 } |
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244 |
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245 // create a new array of vtable_indices for default methods |
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246 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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247 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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248 assert(default_vtable_indices() == NULL, "only create once"); |
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249 set_default_vtable_indices(vtable_indices); |
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250 return vtable_indices; |
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251 } |
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252 |
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253 InstanceKlass::InstanceKlass(int vtable_len, |
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254 int itable_len, |
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255 int static_field_size, |
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256 int nonstatic_oop_map_size, |
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257 ReferenceType rt, |
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258 AccessFlags access_flags, |
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259 bool is_anonymous) { |
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260 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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261 |
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262 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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263 access_flags.is_interface(), is_anonymous); |
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264 |
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265 set_vtable_length(vtable_len); |
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266 set_itable_length(itable_len); |
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267 set_static_field_size(static_field_size); |
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268 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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269 set_access_flags(access_flags); |
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270 _misc_flags = 0; // initialize to zero |
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271 set_is_anonymous(is_anonymous); |
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272 assert(size() == iksize, "wrong size for object"); |
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273 |
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274 set_array_klasses(NULL); |
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275 set_methods(NULL); |
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276 set_method_ordering(NULL); |
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277 set_default_methods(NULL); |
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278 set_default_vtable_indices(NULL); |
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279 set_local_interfaces(NULL); |
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280 set_transitive_interfaces(NULL); |
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281 init_implementor(); |
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282 set_fields(NULL, 0); |
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283 set_constants(NULL); |
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284 set_class_loader_data(NULL); |
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285 set_source_file_name_index(0); |
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286 set_source_debug_extension(NULL, 0); |
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287 set_array_name(NULL); |
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288 set_inner_classes(NULL); |
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289 set_static_oop_field_count(0); |
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290 set_nonstatic_field_size(0); |
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291 set_is_marked_dependent(false); |
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292 set_has_unloaded_dependent(false); |
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293 set_init_state(InstanceKlass::allocated); |
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294 set_init_thread(NULL); |
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295 set_reference_type(rt); |
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296 set_oop_map_cache(NULL); |
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297 set_jni_ids(NULL); |
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298 set_osr_nmethods_head(NULL); |
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299 set_breakpoints(NULL); |
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300 init_previous_versions(); |
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301 set_generic_signature_index(0); |
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302 release_set_methods_jmethod_ids(NULL); |
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303 set_annotations(NULL); |
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304 set_jvmti_cached_class_field_map(NULL); |
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305 set_initial_method_idnum(0); |
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306 _dependencies = NULL; |
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307 set_jvmti_cached_class_field_map(NULL); |
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308 set_cached_class_file(NULL); |
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309 set_initial_method_idnum(0); |
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310 set_minor_version(0); |
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311 set_major_version(0); |
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312 NOT_PRODUCT(_verify_count = 0;) |
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313 |
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314 // initialize the non-header words to zero |
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315 intptr_t* p = (intptr_t*)this; |
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316 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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317 p[index] = NULL_WORD; |
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318 } |
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319 |
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320 // Set temporary value until parseClassFile updates it with the real instance |
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321 // size. |
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322 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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323 } |
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324 |
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325 |
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326 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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327 Array<Method*>* methods) { |
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328 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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329 !methods->is_shared()) { |
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330 for (int i = 0; i < methods->length(); i++) { |
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331 Method* method = methods->at(i); |
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332 if (method == NULL) continue; // maybe null if error processing |
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333 // Only want to delete methods that are not executing for RedefineClasses. |
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334 // The previous version will point to them so they're not totally dangling |
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335 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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336 MetadataFactory::free_metadata(loader_data, method); |
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337 } |
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338 MetadataFactory::free_array<Method*>(loader_data, methods); |
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339 } |
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340 } |
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341 |
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342 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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343 Klass* super_klass, |
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344 Array<Klass*>* local_interfaces, |
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345 Array<Klass*>* transitive_interfaces) { |
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346 // Only deallocate transitive interfaces if not empty, same as super class |
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347 // or same as local interfaces. See code in parseClassFile. |
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348 Array<Klass*>* ti = transitive_interfaces; |
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349 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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350 // check that the interfaces don't come from super class |
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351 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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352 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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353 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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354 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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355 } |
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356 } |
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357 |
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358 // local interfaces can be empty |
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359 if (local_interfaces != Universe::the_empty_klass_array() && |
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360 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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361 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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362 } |
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363 } |
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364 |
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365 // This function deallocates the metadata and C heap pointers that the |
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366 // InstanceKlass points to. |
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367 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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368 |
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369 // Orphan the mirror first, CMS thinks it's still live. |
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370 if (java_mirror() != NULL) { |
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371 java_lang_Class::set_klass(java_mirror(), NULL); |
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372 } |
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373 |
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374 // Need to take this class off the class loader data list. |
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375 loader_data->remove_class(this); |
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376 |
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377 // The array_klass for this class is created later, after error handling. |
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378 // For class redefinition, we keep the original class so this scratch class |
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379 // doesn't have an array class. Either way, assert that there is nothing |
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380 // to deallocate. |
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381 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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382 |
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383 // Release C heap allocated data that this might point to, which includes |
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384 // reference counting symbol names. |
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385 release_C_heap_structures(); |
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386 |
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387 deallocate_methods(loader_data, methods()); |
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388 set_methods(NULL); |
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389 |
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390 if (method_ordering() != NULL && |
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391 method_ordering() != Universe::the_empty_int_array() && |
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392 !method_ordering()->is_shared()) { |
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393 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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394 } |
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395 set_method_ordering(NULL); |
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396 |
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397 // default methods can be empty |
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398 if (default_methods() != NULL && |
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399 default_methods() != Universe::the_empty_method_array() && |
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400 !default_methods()->is_shared()) { |
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401 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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402 } |
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403 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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404 set_default_methods(NULL); |
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405 |
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406 // default methods vtable indices can be empty |
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407 if (default_vtable_indices() != NULL && |
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408 !default_vtable_indices()->is_shared()) { |
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409 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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410 } |
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411 set_default_vtable_indices(NULL); |
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412 |
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413 |
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414 // This array is in Klass, but remove it with the InstanceKlass since |
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415 // this place would be the only caller and it can share memory with transitive |
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416 // interfaces. |
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417 if (secondary_supers() != NULL && |
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418 secondary_supers() != Universe::the_empty_klass_array() && |
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419 secondary_supers() != transitive_interfaces() && |
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420 !secondary_supers()->is_shared()) { |
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421 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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422 } |
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423 set_secondary_supers(NULL); |
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424 |
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425 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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426 set_transitive_interfaces(NULL); |
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427 set_local_interfaces(NULL); |
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428 |
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429 if (fields() != NULL && !fields()->is_shared()) { |
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430 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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431 } |
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432 set_fields(NULL, 0); |
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433 |
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434 // If a method from a redefined class is using this constant pool, don't |
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435 // delete it, yet. The new class's previous version will point to this. |
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436 if (constants() != NULL) { |
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437 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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438 if (!constants()->is_shared()) { |
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439 MetadataFactory::free_metadata(loader_data, constants()); |
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440 } |
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441 set_constants(NULL); |
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442 } |
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443 |
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444 if (inner_classes() != NULL && |
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445 inner_classes() != Universe::the_empty_short_array() && |
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446 !inner_classes()->is_shared()) { |
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447 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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448 } |
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449 set_inner_classes(NULL); |
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450 |
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451 // We should deallocate the Annotations instance if it's not in shared spaces. |
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452 if (annotations() != NULL && !annotations()->is_shared()) { |
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453 MetadataFactory::free_metadata(loader_data, annotations()); |
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454 } |
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455 set_annotations(NULL); |
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456 } |
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457 |
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458 bool InstanceKlass::should_be_initialized() const { |
0 | 459 return !is_initialized(); |
460 } | |
461 | |
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462 klassVtable* InstanceKlass::vtable() const { |
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463 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 464 } |
465 | |
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466 klassItable* InstanceKlass::itable() const { |
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467 return new klassItable(instanceKlassHandle(this)); |
0 | 468 } |
469 | |
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470 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 471 if (!EagerInitialization) return; |
472 | |
473 if (this->is_not_initialized()) { | |
474 // abort if the the class has a class initializer | |
475 if (this->class_initializer() != NULL) return; | |
476 | |
477 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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478 Klass* super = this->super(); |
0 | 479 if (super == NULL) return; |
480 | |
481 // abort if the super class should be initialized | |
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482 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 483 |
484 // call body to expose the this pointer | |
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485 instanceKlassHandle this_oop(thread, this); |
0 | 486 eager_initialize_impl(this_oop); |
487 } | |
488 } | |
489 | |
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490 // JVMTI spec thinks there are signers and protection domain in the |
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491 // instanceKlass. These accessors pretend these fields are there. |
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492 // The hprof specification also thinks these fields are in InstanceKlass. |
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493 oop InstanceKlass::protection_domain() const { |
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494 // return the protection_domain from the mirror |
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495 return java_lang_Class::protection_domain(java_mirror()); |
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496 } |
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497 |
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498 // To remove these from requires an incompatible change and CCC request. |
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499 objArrayOop InstanceKlass::signers() const { |
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500 // return the signers from the mirror |
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501 return java_lang_Class::signers(java_mirror()); |
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502 } |
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503 |
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504 oop InstanceKlass::init_lock() const { |
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505 // return the init lock from the mirror |
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506 oop lock = java_lang_Class::init_lock(java_mirror()); |
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507 // Prevent reordering with any access of initialization state |
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508 OrderAccess::loadload(); |
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509 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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510 "only fully initialized state can have a null lock"); |
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511 return lock; |
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512 } |
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513 |
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514 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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515 // threads to get this lock will see a null lock and will not lock. |
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516 // That's okay because they all check for initialized state after getting |
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517 // the lock and return. |
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518 void InstanceKlass::fence_and_clear_init_lock() { |
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519 // make sure previous stores are all done, notably the init_state. |
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520 OrderAccess::storestore(); |
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521 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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522 assert(!is_not_initialized(), "class must be initialized now"); |
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523 } |
0 | 524 |
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525 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 526 EXCEPTION_MARK; |
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527 oop init_lock = this_oop->init_lock(); |
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528 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 529 |
530 // abort if someone beat us to the initialization | |
531 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
532 | |
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533 ClassState old_state = this_oop->init_state(); |
0 | 534 link_class_impl(this_oop, true, THREAD); |
535 if (HAS_PENDING_EXCEPTION) { | |
536 CLEAR_PENDING_EXCEPTION; | |
537 // Abort if linking the class throws an exception. | |
538 | |
539 // Use a test to avoid redundantly resetting the state if there's | |
540 // no change. Set_init_state() asserts that state changes make | |
541 // progress, whereas here we might just be spinning in place. | |
542 if( old_state != this_oop->_init_state ) | |
543 this_oop->set_init_state (old_state); | |
544 } else { | |
545 // linking successfull, mark class as initialized | |
546 this_oop->set_init_state (fully_initialized); | |
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547 this_oop->fence_and_clear_init_lock(); |
0 | 548 // trace |
549 if (TraceClassInitialization) { | |
550 ResourceMark rm(THREAD); | |
551 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
552 } | |
553 } | |
554 } | |
555 | |
556 | |
557 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
558 // process. The step comments refers to the procedure described in that section. | |
559 // Note: implementation moved to static method to expose the this pointer. | |
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560 void InstanceKlass::initialize(TRAPS) { |
0 | 561 if (this->should_be_initialized()) { |
562 HandleMark hm(THREAD); | |
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563 instanceKlassHandle this_oop(THREAD, this); |
0 | 564 initialize_impl(this_oop, CHECK); |
565 // Note: at this point the class may be initialized | |
566 // OR it may be in the state of being initialized | |
567 // in case of recursive initialization! | |
568 } else { | |
569 assert(is_initialized(), "sanity check"); | |
570 } | |
571 } | |
572 | |
573 | |
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574 bool InstanceKlass::verify_code( |
0 | 575 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
576 // 1) Verify the bytecodes | |
577 Verifier::Mode mode = | |
578 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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579 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 580 } |
581 | |
582 | |
583 // Used exclusively by the shared spaces dump mechanism to prevent | |
584 // classes mapped into the shared regions in new VMs from appearing linked. | |
585 | |
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586 void InstanceKlass::unlink_class() { |
0 | 587 assert(is_linked(), "must be linked"); |
588 _init_state = loaded; | |
589 } | |
590 | |
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591 void InstanceKlass::link_class(TRAPS) { |
0 | 592 assert(is_loaded(), "must be loaded"); |
593 if (!is_linked()) { | |
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594 HandleMark hm(THREAD); |
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595 instanceKlassHandle this_oop(THREAD, this); |
0 | 596 link_class_impl(this_oop, true, CHECK); |
597 } | |
598 } | |
599 | |
600 // Called to verify that a class can link during initialization, without | |
601 // throwing a VerifyError. | |
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602 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 603 assert(is_loaded(), "must be loaded"); |
604 if (!is_linked()) { | |
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605 HandleMark hm(THREAD); |
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606 instanceKlassHandle this_oop(THREAD, this); |
0 | 607 link_class_impl(this_oop, false, CHECK_false); |
608 } | |
609 return is_linked(); | |
610 } | |
611 | |
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612 bool InstanceKlass::link_class_impl( |
0 | 613 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
614 // check for error state | |
615 if (this_oop->is_in_error_state()) { | |
616 ResourceMark rm(THREAD); | |
617 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
618 this_oop->external_name(), false); | |
619 } | |
620 // return if already verified | |
621 if (this_oop->is_linked()) { | |
622 return true; | |
623 } | |
624 | |
625 // Timing | |
626 // timer handles recursion | |
627 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
628 JavaThread* jt = (JavaThread*)THREAD; | |
629 | |
630 // link super class before linking this class | |
631 instanceKlassHandle super(THREAD, this_oop->super()); | |
632 if (super.not_null()) { | |
633 if (super->is_interface()) { // check if super class is an interface | |
634 ResourceMark rm(THREAD); | |
635 Exceptions::fthrow( | |
636 THREAD_AND_LOCATION, | |
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637 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 638 "class %s has interface %s as super class", |
639 this_oop->external_name(), | |
640 super->external_name() | |
641 ); | |
642 return false; | |
643 } | |
644 | |
645 link_class_impl(super, throw_verifyerror, CHECK_false); | |
646 } | |
647 | |
648 // link all interfaces implemented by this class before linking this class | |
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649 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 650 int num_interfaces = interfaces->length(); |
651 for (int index = 0; index < num_interfaces; index++) { | |
652 HandleMark hm(THREAD); | |
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653 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 654 link_class_impl(ih, throw_verifyerror, CHECK_false); |
655 } | |
656 | |
657 // in case the class is linked in the process of linking its superclasses | |
658 if (this_oop->is_linked()) { | |
659 return true; | |
660 } | |
661 | |
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662 // trace only the link time for this klass that includes |
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663 // the verification time |
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664 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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665 ClassLoader::perf_class_link_selftime(), |
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666 ClassLoader::perf_classes_linked(), |
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667 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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668 jt->get_thread_stat()->perf_timers_addr(), |
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669 PerfClassTraceTime::CLASS_LINK); |
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670 |
0 | 671 // verification & rewriting |
672 { | |
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673 oop init_lock = this_oop->init_lock(); |
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674 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 675 // rewritten will have been set if loader constraint error found |
676 // on an earlier link attempt | |
677 // don't verify or rewrite if already rewritten | |
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678 |
0 | 679 if (!this_oop->is_linked()) { |
680 if (!this_oop->is_rewritten()) { | |
681 { | |
682 // Timer includes any side effects of class verification (resolution, | |
683 // etc), but not recursive entry into verify_code(). | |
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684 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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685 ClassLoader::perf_class_verify_selftime(), |
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686 ClassLoader::perf_classes_verified(), |
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687 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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688 jt->get_thread_stat()->perf_timers_addr(), |
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689 PerfClassTraceTime::CLASS_VERIFY); |
0 | 690 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
691 if (!verify_ok) { | |
692 return false; | |
693 } | |
694 } | |
695 | |
696 // Just in case a side-effect of verify linked this class already | |
697 // (which can sometimes happen since the verifier loads classes | |
698 // using custom class loaders, which are free to initialize things) | |
699 if (this_oop->is_linked()) { | |
700 return true; | |
701 } | |
702 | |
703 // also sets rewritten | |
704 this_oop->rewrite_class(CHECK_false); | |
705 } | |
706 | |
3748 | 707 // relocate jsrs and link methods after they are all rewritten |
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708 this_oop->link_methods(CHECK_false); |
3748 | 709 |
0 | 710 // Initialize the vtable and interface table after |
711 // methods have been rewritten since rewrite may | |
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712 // fabricate new Method*s. |
0 | 713 // also does loader constraint checking |
714 if (!this_oop()->is_shared()) { | |
715 ResourceMark rm(THREAD); | |
716 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
717 this_oop->itable()->initialize_itable(true, CHECK_false); | |
718 } | |
719 #ifdef ASSERT | |
720 else { | |
721 ResourceMark rm(THREAD); | |
722 this_oop->vtable()->verify(tty, true); | |
723 // In case itable verification is ever added. | |
724 // this_oop->itable()->verify(tty, true); | |
725 } | |
726 #endif | |
727 this_oop->set_init_state(linked); | |
728 if (JvmtiExport::should_post_class_prepare()) { | |
729 Thread *thread = THREAD; | |
730 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
731 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
732 } | |
733 } | |
734 } | |
735 return true; | |
736 } | |
737 | |
738 | |
739 // Rewrite the byte codes of all of the methods of a class. | |
740 // The rewriter must be called exactly once. Rewriting must happen after | |
741 // verification but before the first method of the class is executed. | |
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742 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 743 assert(is_loaded(), "must be loaded"); |
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744 instanceKlassHandle this_oop(THREAD, this); |
0 | 745 if (this_oop->is_rewritten()) { |
746 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
747 return; | |
748 } | |
3748 | 749 Rewriter::rewrite(this_oop, CHECK); |
0 | 750 this_oop->set_rewritten(); |
751 } | |
752 | |
3748 | 753 // Now relocate and link method entry points after class is rewritten. |
754 // This is outside is_rewritten flag. In case of an exception, it can be | |
755 // executed more than once. | |
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756 void InstanceKlass::link_methods(TRAPS) { |
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757 int len = methods()->length(); |
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758 for (int i = len-1; i >= 0; i--) { |
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759 methodHandle m(THREAD, methods()->at(i)); |
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760 |
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761 // Set up method entry points for compiler and interpreter . |
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762 m->link_method(m, CHECK); |
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763 |
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764 // This is for JVMTI and unrelated to relocator but the last thing we do |
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765 #ifdef ASSERT |
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766 if (StressMethodComparator) { |
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767 ResourceMark rm(THREAD); |
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768 static int nmc = 0; |
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769 for (int j = i; j >= 0 && j >= i-4; j--) { |
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770 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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771 bool z = MethodComparator::methods_EMCP(m(), |
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772 methods()->at(j)); |
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773 if (j == i && !z) { |
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774 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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775 assert(z, "method must compare equal to itself"); |
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776 } |
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777 } |
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778 } |
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779 #endif //ASSERT |
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780 } |
3748 | 781 } |
782 | |
0 | 783 |
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784 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 785 // Make sure klass is linked (verified) before initialization |
786 // A class could already be verified, since it has been reflected upon. | |
787 this_oop->link_class(CHECK); | |
788 | |
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789 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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790 |
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791 bool wait = false; |
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792 |
0 | 793 // refer to the JVM book page 47 for description of steps |
794 // Step 1 | |
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795 { |
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796 oop init_lock = this_oop->init_lock(); |
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797 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 798 |
799 Thread *self = THREAD; // it's passed the current thread | |
800 | |
801 // Step 2 | |
802 // If we were to use wait() instead of waitInterruptibly() then | |
803 // we might end up throwing IE from link/symbol resolution sites | |
804 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
805 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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806 wait = true; |
0 | 807 ol.waitUninterruptibly(CHECK); |
808 } | |
809 | |
810 // Step 3 | |
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811 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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812 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 813 return; |
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814 } |
0 | 815 |
816 // Step 4 | |
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817 if (this_oop->is_initialized()) { |
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818 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 819 return; |
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820 } |
0 | 821 |
822 // Step 5 | |
823 if (this_oop->is_in_error_state()) { | |
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824 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 825 ResourceMark rm(THREAD); |
826 const char* desc = "Could not initialize class "; | |
827 const char* className = this_oop->external_name(); | |
828 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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829 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 830 if (NULL == message) { |
831 // Out of memory: can't create detailed error message | |
832 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
833 } else { | |
834 jio_snprintf(message, msglen, "%s%s", desc, className); | |
835 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
836 } | |
837 } | |
838 | |
839 // Step 6 | |
840 this_oop->set_init_state(being_initialized); | |
841 this_oop->set_init_thread(self); | |
842 } | |
843 | |
844 // Step 7 | |
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845 Klass* super_klass = this_oop->super(); |
6983 | 846 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
847 super_klass->initialize(THREAD); | |
0 | 848 |
849 if (HAS_PENDING_EXCEPTION) { | |
850 Handle e(THREAD, PENDING_EXCEPTION); | |
851 CLEAR_PENDING_EXCEPTION; | |
852 { | |
853 EXCEPTION_MARK; | |
854 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
855 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
856 } | |
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857 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 858 THROW_OOP(e()); |
859 } | |
860 } | |
861 | |
6934 | 862 if (this_oop->has_default_methods()) { |
863 // Step 7.5: initialize any interfaces which have default methods | |
864 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
865 Klass* iface = this_oop->local_interfaces()->at(i); | |
866 InstanceKlass* ik = InstanceKlass::cast(iface); | |
867 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
868 ik->initialize(THREAD); | |
869 | |
870 if (HAS_PENDING_EXCEPTION) { | |
871 Handle e(THREAD, PENDING_EXCEPTION); | |
872 CLEAR_PENDING_EXCEPTION; | |
873 { | |
874 EXCEPTION_MARK; | |
875 // Locks object, set state, and notify all waiting threads | |
876 this_oop->set_initialization_state_and_notify( | |
877 initialization_error, THREAD); | |
878 | |
879 // ignore any exception thrown, superclass initialization error is | |
880 // thrown below | |
881 CLEAR_PENDING_EXCEPTION; | |
882 } | |
883 DTRACE_CLASSINIT_PROBE_WAIT( | |
884 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
885 THROW_OOP(e()); | |
886 } | |
887 } | |
888 } | |
889 } | |
890 | |
0 | 891 // Step 8 |
892 { | |
893 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
894 JavaThread* jt = (JavaThread*)THREAD; | |
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895 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 896 // Timer includes any side effects of class initialization (resolution, |
897 // etc), but not recursive entry into call_class_initializer(). | |
875
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898 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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899 ClassLoader::perf_class_init_selftime(), |
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900 ClassLoader::perf_classes_inited(), |
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901 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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902 jt->get_thread_stat()->perf_timers_addr(), |
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903 PerfClassTraceTime::CLASS_CLINIT); |
0 | 904 this_oop->call_class_initializer(THREAD); |
905 } | |
906 | |
907 // Step 9 | |
908 if (!HAS_PENDING_EXCEPTION) { | |
909 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
910 { ResourceMark rm(THREAD); | |
911 debug_only(this_oop->vtable()->verify(tty, true);) | |
912 } | |
913 } | |
914 else { | |
915 // Step 10 and 11 | |
916 Handle e(THREAD, PENDING_EXCEPTION); | |
917 CLEAR_PENDING_EXCEPTION; | |
918 { | |
919 EXCEPTION_MARK; | |
920 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
921 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
922 } | |
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923 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 924 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 925 THROW_OOP(e()); |
926 } else { | |
927 JavaCallArguments args(e); | |
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928 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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929 vmSymbols::throwable_void_signature(), |
0 | 930 &args); |
931 } | |
932 } | |
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933 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 934 } |
935 | |
936 | |
937 // Note: implementation moved to static method to expose the this pointer. | |
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938 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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939 instanceKlassHandle kh(THREAD, this); |
0 | 940 set_initialization_state_and_notify_impl(kh, state, CHECK); |
941 } | |
942 | |
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943 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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944 oop init_lock = this_oop->init_lock(); |
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945 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 946 this_oop->set_init_state(state); |
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947 this_oop->fence_and_clear_init_lock(); |
0 | 948 ol.notify_all(CHECK); |
949 } | |
950 | |
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951 // The embedded _implementor field can only record one implementor. |
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952 // When there are more than one implementors, the _implementor field |
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953 // is set to the interface Klass* itself. Following are the possible |
5998
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954 // values for the _implementor field: |
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955 // NULL - no implementor |
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956 // implementor Klass* - one implementor |
5998
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957 // self - more than one implementor |
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958 // |
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959 // The _implementor field only exists for interfaces. |
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960 void InstanceKlass::add_implementor(Klass* k) { |
0 | 961 assert(Compile_lock->owned_by_self(), ""); |
5998
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962 assert(is_interface(), "not interface"); |
0 | 963 // Filter out my subinterfaces. |
964 // (Note: Interfaces are never on the subklass list.) | |
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965 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 966 |
967 // Filter out subclasses whose supers already implement me. | |
968 // (Note: CHA must walk subclasses of direct implementors | |
969 // in order to locate indirect implementors.) | |
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970 Klass* sk = InstanceKlass::cast(k)->super(); |
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971 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 972 // We only need to check one immediate superclass, since the |
973 // implements_interface query looks at transitive_interfaces. | |
974 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
975 return; | |
976 | |
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977 Klass* ik = implementor(); |
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978 if (ik == NULL) { |
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979 set_implementor(k); |
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980 } else if (ik != this) { |
5998
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981 // There is already an implementor. Use itself as an indicator of |
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982 // more than one implementors. |
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983 set_implementor(this); |
0 | 984 } |
985 | |
986 // The implementor also implements the transitive_interfaces | |
987 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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988 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 989 } |
990 } | |
991 | |
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992 void InstanceKlass::init_implementor() { |
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993 if (is_interface()) { |
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994 set_implementor(NULL); |
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995 } |
0 | 996 } |
997 | |
998 | |
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999 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1000 // link this class into the implementors list of every interface it implements |
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1001 Klass* this_as_klass_oop = this; |
0 | 1002 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1003 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1004 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1005 assert(interf->is_interface(), "expected interface"); |
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1006 interf->add_implementor(this_as_klass_oop); |
0 | 1007 } |
1008 } | |
1009 | |
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1010 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1011 if (is_interface()) |
1012 return false; | |
1013 else | |
1014 return Klass::can_be_primary_super_slow(); | |
1015 } | |
1016 | |
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1017 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1018 // The secondaries are the implemented interfaces. |
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1019 InstanceKlass* ik = InstanceKlass::cast(this); |
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1020 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1021 int num_secondaries = num_extra_slots + interfaces->length(); |
1022 if (num_secondaries == 0) { | |
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1023 // Must share this for correct bootstrapping! |
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1024 set_secondary_supers(Universe::the_empty_klass_array()); |
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1025 return NULL; |
0 | 1026 } else if (num_extra_slots == 0) { |
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1027 // The secondary super list is exactly the same as the transitive interfaces. |
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1028 // Redefine classes has to be careful not to delete this! |
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1029 set_secondary_supers(interfaces); |
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1030 return NULL; |
0 | 1031 } else { |
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1032 // Copy transitive interfaces to a temporary growable array to be constructed |
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1033 // into the secondary super list with extra slots. |
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1034 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1035 for (int i = 0; i < interfaces->length(); i++) { |
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1036 secondaries->push(interfaces->at(i)); |
0 | 1037 } |
1038 return secondaries; | |
1039 } | |
1040 } | |
1041 | |
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1042 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1043 if (k->is_interface()) { |
0 | 1044 return implements_interface(k); |
1045 } else { | |
1046 return Klass::compute_is_subtype_of(k); | |
1047 } | |
1048 } | |
1049 | |
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1050 bool InstanceKlass::implements_interface(Klass* k) const { |
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1051 if (this == k) return true; |
6983 | 1052 assert(k->is_interface(), "should be an interface class"); |
0 | 1053 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1054 if (transitive_interfaces()->at(i) == k) { |
0 | 1055 return true; |
1056 } | |
1057 } | |
1058 return false; | |
1059 } | |
1060 | |
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1061 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1062 // Verify direct super interface |
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1063 if (this == k) return true; |
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1064 assert(k->is_interface(), "should be an interface class"); |
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1065 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1066 if (local_interfaces()->at(i) == k) { |
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1067 return true; |
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1068 } |
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1069 } |
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1070 return false; |
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1071 } |
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1072 |
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1073 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1074 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1075 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1076 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1077 JvmtiExport::post_array_size_exhausted(); |
0 | 1078 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1079 } | |
1080 int size = objArrayOopDesc::object_size(length); | |
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1081 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1082 KlassHandle h_ak (THREAD, ak); |
1083 objArrayOop o = | |
1084 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1085 return o; | |
1086 } | |
1087 | |
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1088 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1089 if (TraceFinalizerRegistration) { |
1090 tty->print("Registered "); | |
1091 i->print_value_on(tty); | |
1092 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1093 } | |
1094 instanceHandle h_i(THREAD, i); | |
1095 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1096 JavaValue result(T_VOID); | |
1097 JavaCallArguments args(h_i); | |
1098 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1099 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1100 return h_i(); | |
1101 } | |
1102 | |
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1103 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1104 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1105 int size = size_helper(); // Query before forming handle. | |
1106 | |
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1107 KlassHandle h_k(THREAD, this); |
0 | 1108 |
1109 instanceOop i; | |
1110 | |
1111 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1112 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1113 i = register_finalizer(i, CHECK_NULL); | |
1114 } | |
1115 return i; | |
1116 } | |
1117 | |
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1118 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1119 if (is_interface() || is_abstract()) { |
1120 ResourceMark rm(THREAD); | |
1121 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1122 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1123 } | |
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1124 if (this == SystemDictionary::Class_klass()) { |
0 | 1125 ResourceMark rm(THREAD); |
1126 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1127 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1128 } | |
1129 } | |
1130 | |
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1131 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1132 instanceKlassHandle this_oop(THREAD, this); |
0 | 1133 return array_klass_impl(this_oop, or_null, n, THREAD); |
1134 } | |
1135 | |
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1136 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1137 if (this_oop->array_klasses() == NULL) { |
1138 if (or_null) return NULL; | |
1139 | |
1140 ResourceMark rm; | |
1141 JavaThread *jt = (JavaThread *)THREAD; | |
1142 { | |
1143 // Atomic creation of array_klasses | |
1144 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1145 MutexLocker ma(MultiArray_lock, THREAD); | |
1146 | |
1147 // Check if update has already taken place | |
1148 if (this_oop->array_klasses() == NULL) { | |
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1149 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1150 this_oop->set_array_klasses(k); |
1151 } | |
1152 } | |
1153 } | |
1154 // _this will always be set at this point | |
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1155 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1156 if (or_null) { |
1157 return oak->array_klass_or_null(n); | |
1158 } | |
1159 return oak->array_klass(n, CHECK_NULL); | |
1160 } | |
1161 | |
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1162 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1163 return array_klass_impl(or_null, 1, THREAD); |
1164 } | |
1165 | |
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1166 void InstanceKlass::call_class_initializer(TRAPS) { |
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1167 instanceKlassHandle ik (THREAD, this); |
0 | 1168 call_class_initializer_impl(ik, THREAD); |
1169 } | |
1170 | |
1171 static int call_class_initializer_impl_counter = 0; // for debugging | |
1172 | |
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1173 Method* InstanceKlass::class_initializer() { |
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1174 Method* clinit = find_method( |
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1175 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1176 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1177 return clinit; |
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1178 } |
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1179 return NULL; |
0 | 1180 } |
1181 | |
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1182 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1183 if (ReplayCompiles && |
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1184 (ReplaySuppressInitializers == 1 || |
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1185 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1186 // Hide the existence of the initializer for the purpose of replaying the compile |
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1187 return; |
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1188 } |
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1189 |
0 | 1190 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1191 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1192 if (TraceClassInitialization) { | |
1193 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1194 this_oop->name()->print_value(); | |
1195 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1196 } | |
1197 if (h_method() != NULL) { | |
1198 JavaCallArguments args; // No arguments | |
1199 JavaValue result(T_VOID); | |
1200 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1201 } | |
1202 } | |
1203 | |
1204 | |
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1205 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1206 InterpreterOopMap* entry_for) { |
1207 // Dirty read, then double-check under a lock. | |
1208 if (_oop_map_cache == NULL) { | |
1209 // Otherwise, allocate a new one. | |
1210 MutexLocker x(OopMapCacheAlloc_lock); | |
1211 // First time use. Allocate a cache in C heap | |
1212 if (_oop_map_cache == NULL) { | |
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1213 // Release stores from OopMapCache constructor before assignment |
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1214 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1215 // required memory barrier only because of the volatile |
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1216 // qualifier of _oop_map_cache. |
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1217 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1218 } |
1219 } | |
1220 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1221 _oop_map_cache->lookup(method, bci, entry_for); | |
1222 } | |
1223 | |
1224 | |
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1225 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1226 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1227 Symbol* f_name = fs.name(); |
1228 Symbol* f_sig = fs.signature(); | |
0 | 1229 if (f_name == name && f_sig == sig) { |
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1230 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1231 return true; |
1232 } | |
1233 } | |
1234 return false; | |
1235 } | |
1236 | |
1237 | |
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1238 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1239 const int n = local_interfaces()->length(); |
1240 for (int i = 0; i < n; i++) { | |
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1241 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1242 assert(intf1->is_interface(), "just checking type"); |
0 | 1243 // search for field in current interface |
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1244 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1245 assert(fd->is_static(), "interface field must be static"); |
1246 return intf1; | |
1247 } | |
1248 // search for field in direct superinterfaces | |
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1249 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1250 if (intf2 != NULL) return intf2; |
1251 } | |
1252 // otherwise field lookup fails | |
1253 return NULL; | |
1254 } | |
1255 | |
1256 | |
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1257 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1258 // search order according to newest JVM spec (5.4.3.2, p.167). |
1259 // 1) search for field in current klass | |
1260 if (find_local_field(name, sig, fd)) { | |
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1261 return const_cast<InstanceKlass*>(this); |
0 | 1262 } |
1263 // 2) search for field recursively in direct superinterfaces | |
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1264 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1265 if (intf != NULL) return intf; |
1266 } | |
1267 // 3) apply field lookup recursively if superclass exists | |
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1268 { Klass* supr = super(); |
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1269 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1270 } |
1271 // 4) otherwise field lookup fails | |
1272 return NULL; | |
1273 } | |
1274 | |
1275 | |
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1276 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1277 // search order according to newest JVM spec (5.4.3.2, p.167). |
1278 // 1) search for field in current klass | |
1279 if (find_local_field(name, sig, fd)) { | |
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1280 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1281 } |
1282 // 2) search for field recursively in direct superinterfaces | |
1283 if (is_static) { | |
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1284 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1285 if (intf != NULL) return intf; |
1286 } | |
1287 // 3) apply field lookup recursively if superclass exists | |
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1288 { Klass* supr = super(); |
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1289 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1290 } |
1291 // 4) otherwise field lookup fails | |
1292 return NULL; | |
1293 } | |
1294 | |
1295 | |
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1296 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1297 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1298 if (fs.offset() == offset) { |
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1299 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1300 if (fd->is_static() == is_static) return true; |
1301 } | |
1302 } | |
1303 return false; | |
1304 } | |
1305 | |
1306 | |
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1307 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1308 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1309 while (klass != NULL) { |
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1310 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1311 return true; |
1312 } | |
6983 | 1313 klass = klass->super(); |
0 | 1314 } |
1315 return false; | |
1316 } | |
1317 | |
1318 | |
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1319 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1320 int len = methods()->length(); |
1321 for (int index = 0; index < len; index++) { | |
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1322 Method* m = methods()->at(index); |
0 | 1323 assert(m->is_method(), "must be method"); |
1324 f(m); | |
1325 } | |
1326 } | |
1327 | |
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1328 |
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1329 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1330 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1331 if (fs.access_flags().is_static()) { | |
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1332 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1333 cl->do_field(&fd); |
1334 } | |
0 | 1335 } |
1336 } | |
1337 | |
1338 | |
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1339 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1340 instanceKlassHandle h_this(THREAD, this); |
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1341 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1342 } |
1343 | |
1344 | |
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1345 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1346 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1347 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1348 if (fs.access_flags().is_static()) { |
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1349 fieldDescriptor& fd = fs.field_descriptor(); |
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1350 f(&fd, mirror, CHECK); |
3938 | 1351 } |
0 | 1352 } |
1353 } | |
1354 | |
1355 | |
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1356 static int compare_fields_by_offset(int* a, int* b) { |
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1357 return a[0] - b[0]; |
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1358 } |
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1359 |
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1360 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1361 InstanceKlass* super = superklass(); |
0 | 1362 if (super != NULL) { |
1363 super->do_nonstatic_fields(cl); | |
1364 } | |
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1365 fieldDescriptor fd; |
3938 | 1366 int length = java_fields_count(); |
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1367 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1368 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1369 int j = 0; |
3938 | 1370 for (int i = 0; i < length; i += 1) { |
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1371 fd.reinitialize(this, i); |
44
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1372 if (!fd.is_static()) { |
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1373 fields_sorted[j + 0] = fd.offset(); |
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1374 fields_sorted[j + 1] = i; |
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1375 j += 2; |
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1376 } |
0 | 1377 } |
44
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1378 if (j > 0) { |
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1379 length = j; |
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1380 // _sort_Fn is defined in growableArray.hpp. |
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1381 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1382 for (int i = 0; i < length; i += 2) { |
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1383 fd.reinitialize(this, fields_sorted[i + 1]); |
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1384 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1385 cl->do_field(&fd); |
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1386 } |
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1387 } |
6197 | 1388 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1389 } |
1390 | |
1391 | |
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1392 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1393 if (array_klasses() != NULL) |
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1394 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1395 } |
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1396 |
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1397 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1398 if (array_klasses() != NULL) |
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1399 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1400 } |
1401 | |
1402 #ifdef ASSERT | |
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1403 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1404 int len = methods->length(); |
1405 for (int index = 0; index < len; index++) { | |
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1406 Method* m = methods->at(index); |
0 | 1407 assert(m->is_method(), "must be method"); |
1408 if (m->signature() == signature && m->name() == name) { | |
1409 return index; | |
1410 } | |
1411 } | |
1412 return -1; | |
1413 } | |
1414 #endif | |
1415 | |
6934 | 1416 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1417 int len = methods->length(); |
1418 // methods are sorted, so do binary search | |
1419 int l = 0; | |
1420 int h = len - 1; | |
1421 while (l <= h) { | |
1422 int mid = (l + h) >> 1; | |
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1423 Method* m = methods->at(mid); |
0 | 1424 assert(m->is_method(), "must be method"); |
1425 int res = m->name()->fast_compare(name); | |
1426 if (res == 0) { | |
6934 | 1427 return mid; |
0 | 1428 } else if (res < 0) { |
1429 l = mid + 1; | |
1430 } else { | |
1431 h = mid - 1; | |
1432 } | |
1433 } | |
6934 | 1434 return -1; |
1435 } | |
1436 | |
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1437 // find_method looks up the name/signature in the local methods array |
6934 | 1438 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1439 return find_method_impl(name, signature, false); |
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1440 } |
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1441 |
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1442 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
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1443 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass); |
6934 | 1444 } |
1445 | |
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1446 // find_instance_method looks up the name/signature in the local methods array |
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1447 // and skips over static methods |
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1448 Method* InstanceKlass::find_instance_method( |
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1449 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1450 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1451 if (meth != NULL && meth->is_static()) { |
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1452 meth = NULL; |
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1453 } |
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1454 return meth; |
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1455 } |
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1456 |
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1457 // find_method looks up the name/signature in the local methods array |
6934 | 1458 Method* InstanceKlass::find_method( |
1459 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1460 return InstanceKlass::find_method_impl(methods, name, signature, false); |
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1461 } |
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1462 |
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1463 Method* InstanceKlass::find_method_impl( |
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1464 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
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1465 int hit = find_method_index(methods, name, signature, skipping_overpass); |
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1466 return hit >= 0 ? methods->at(hit): NULL; |
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1467 } |
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1468 |
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1469 // Used directly for default_methods to find the index into the |
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1470 // default_vtable_indices, and indirectly by find_method |
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1471 // find_method_index looks in the local methods array to return the index |
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1472 // of the matching name/signature. If, overpass methods are being ignored, |
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1473 // the search continues to find a potential non-overpass match. This capability |
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1474 // is important during method resolution to prefer a static method, for example, |
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1475 // over an overpass method. |
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1476 int InstanceKlass::find_method_index( |
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1477 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
6934 | 1478 int hit = binary_search(methods, name); |
1479 if (hit != -1) { | |
1480 Method* m = methods->at(hit); | |
1481 // Do linear search to find matching signature. First, quick check | |
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1482 // for common case, ignoring overpasses if requested. |
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1483 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return hit; |
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1484 |
6934 | 1485 // search downwards through overloaded methods |
1486 int i; | |
1487 for (i = hit - 1; i >= 0; --i) { | |
1488 Method* m = methods->at(i); | |
1489 assert(m->is_method(), "must be method"); | |
1490 if (m->name() != name) break; | |
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1491 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1492 } |
1493 // search upwards | |
1494 for (i = hit + 1; i < methods->length(); ++i) { | |
1495 Method* m = methods->at(i); | |
1496 assert(m->is_method(), "must be method"); | |
1497 if (m->name() != name) break; | |
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1498 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1499 } |
1500 // not found | |
0 | 1501 #ifdef ASSERT |
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1502 int index = skipping_overpass ? -1 : linear_search(methods, name, signature); |
6934 | 1503 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1504 #endif |
6934 | 1505 } |
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1506 return -1; |
0 | 1507 } |
6934 | 1508 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1509 return find_method_by_name(methods(), name, end); | |
1510 } | |
1511 | |
1512 int InstanceKlass::find_method_by_name( | |
1513 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1514 assert(end_ptr != NULL, "just checking"); | |
1515 int start = binary_search(methods, name); | |
1516 int end = start + 1; | |
1517 if (start != -1) { | |
1518 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1519 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1520 *end_ptr = end; | |
1521 return start; | |
1522 } | |
1523 return -1; | |
1524 } | |
1525 | |
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1526 // uncached_lookup_method searches both the local class methods array and all |
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1527 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1528 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1529 MethodLookupMode lookup_mode = mode; |
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1530 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1531 while (klass != NULL) { |
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1532 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1533 if (method != NULL) { |
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1534 return method; |
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1535 } |
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1536 klass = InstanceKlass::cast(klass)->super(); |
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1537 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1538 } |
1539 return NULL; | |
1540 } | |
1541 | |
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1542 // lookup a method in the default methods list then in all transitive interfaces |
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1543 // Do NOT return private or static methods |
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1544 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1545 Symbol* signature) const { |
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1546 Method* m = NULL; |
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1547 if (default_methods() != NULL) { |
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1548 m = find_method(default_methods(), name, signature); |
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1549 } |
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1550 // Look up interfaces |
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1551 if (m == NULL) { |
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1552 m = lookup_method_in_all_interfaces(name, signature, normal); |
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1553 } |
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|
1554 return m; |
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|
1555 } |
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1556 |
0 | 1557 // lookup a method in all the interfaces that this class implements |
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1558 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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1559 // They should only be found in the initial InterfaceMethodRef |
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1560 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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1561 Symbol* signature, |
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1562 MethodLookupMode mode) const { |
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1563 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1564 int num_ifs = all_ifs->length(); |
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1565 InstanceKlass *ik = NULL; |
0 | 1566 for (int i = 0; i < num_ifs; i++) { |
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1567 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1568 Method* m = ik->lookup_method(name, signature); |
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1569 if (m != NULL && m->is_public() && !m->is_static() && |
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1570 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1571 return m; |
1572 } | |
1573 } | |
1574 return NULL; | |
1575 } | |
1576 | |
1577 /* jni_id_for_impl for jfieldIds only */ | |
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1578 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1579 MutexLocker ml(JfieldIdCreation_lock); |
1580 // Retry lookup after we got the lock | |
1581 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1582 if (probe == NULL) { | |
1583 // Slow case, allocate new static field identifier | |
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1584 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1585 this_oop->set_jni_ids(probe); |
1586 } | |
1587 return probe; | |
1588 } | |
1589 | |
1590 | |
1591 /* jni_id_for for jfieldIds only */ | |
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1592 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1593 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1594 if (probe == NULL) { | |
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1595 probe = jni_id_for_impl(this, offset); |
0 | 1596 } |
1597 return probe; | |
1598 } | |
1599 | |
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1600 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1601 Array<jushort>* inner_class_list = inner_classes(); |
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1602 if (inner_class_list == NULL) { |
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1603 return 0; |
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|
1604 } |
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|
1605 int length = inner_class_list->length(); |
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|
1606 if (length % inner_class_next_offset == 0) { |
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1607 return 0; |
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1608 } else { |
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1609 int index = length - enclosing_method_attribute_size; |
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1610 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1611 return inner_class_list->at(index + offset); |
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1612 } |
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1613 } |
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1614 |
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1615 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1616 u2 method_index) { |
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1617 Array<jushort>* inner_class_list = inner_classes(); |
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1618 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1619 int length = inner_class_list->length(); |
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1620 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1621 int index = length - enclosing_method_attribute_size; |
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1622 inner_class_list->at_put( |
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1623 index + enclosing_method_class_index_offset, class_index); |
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1624 inner_class_list->at_put( |
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1625 index + enclosing_method_method_index_offset, method_index); |
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1626 } |
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1627 } |
0 | 1628 |
1629 // Lookup or create a jmethodID. | |
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1630 // This code is called by the VMThread and JavaThreads so the |
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1631 // locking has to be done very carefully to avoid deadlocks |
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1632 // and/or other cache consistency problems. |
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1633 // |
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1634 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1635 size_t idnum = (size_t)method_h->method_idnum(); |
1636 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1637 size_t length = 0; | |
1638 jmethodID id = NULL; | |
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1639 |
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1640 // We use a double-check locking idiom here because this cache is |
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1641 // performance sensitive. In the normal system, this cache only |
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1642 // transitions from NULL to non-NULL which is safe because we use |
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1643 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1644 // A partially constructed cache should never be seen by a racing |
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1645 // thread. We also use release_store_ptr() to save a new jmethodID |
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1646 // in the cache so a partially constructed jmethodID should never be |
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1647 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1648 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1649 // creation of the cache itself requires no leaks so a lock is |
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1650 // generally acquired in those two cases. |
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1651 // |
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1652 // If the RedefineClasses() API has been used, then this cache can |
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1653 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1654 // Cache creation requires no leaks and we require safety between all |
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1655 // cache accesses and freeing of the old cache so a lock is generally |
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1656 // acquired when the RedefineClasses() API has been used. |
0 | 1657 |
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1658 if (jmeths != NULL) { |
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1659 // the cache already exists |
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1660 if (!ik_h->idnum_can_increment()) { |
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1661 // the cache can't grow so we can just get the current values |
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1662 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1663 } else { |
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1664 // cache can grow so we have to be more careful |
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1665 if (Threads::number_of_threads() == 0 || |
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1666 SafepointSynchronize::is_at_safepoint()) { |
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1667 // we're single threaded or at a safepoint - no locking needed |
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1668 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1669 } else { |
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1670 MutexLocker ml(JmethodIdCreation_lock); |
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1671 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1672 } |
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|
1673 } |
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|
1674 } |
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1675 // implied else: |
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1676 // we need to allocate a cache so default length and id values are good |
0 | 1677 |
977
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1678 if (jmeths == NULL || // no cache yet |
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1679 length <= idnum || // cache is too short |
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1680 id == NULL) { // cache doesn't contain entry |
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1681 |
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1682 // This function can be called by the VMThread so we have to do all |
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1683 // things that might block on a safepoint before grabbing the lock. |
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1684 // Otherwise, we can deadlock with the VMThread or have a cache |
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1685 // consistency issue. These vars keep track of what we might have |
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1686 // to free after the lock is dropped. |
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1687 jmethodID to_dealloc_id = NULL; |
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1688 jmethodID* to_dealloc_jmeths = NULL; |
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1689 |
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1690 // may not allocate new_jmeths or use it if we allocate it |
0 | 1691 jmethodID* new_jmeths = NULL; |
1692 if (length <= idnum) { | |
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1693 // allocate a new cache that might be used |
0 | 1694 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1695 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1696 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
977
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1697 // cache size is stored in element[0], other elements offset by one |
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1698 new_jmeths[0] = (jmethodID)size; |
0 | 1699 } |
1700 | |
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1701 // allocate a new jmethodID that might be used |
0 | 1702 jmethodID new_id = NULL; |
1703 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1704 // The method passed in is old (but not obsolete), we need to use the current version | |
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1705 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1706 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1707 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1708 } else { |
1709 // It is the current version of the method or an obsolete method, | |
1710 // use the version passed in | |
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1711 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1712 } |
1713 | |
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1714 if (Threads::number_of_threads() == 0 || |
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1715 SafepointSynchronize::is_at_safepoint()) { |
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1716 // we're single threaded or at a safepoint - no locking needed |
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1717 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1718 &to_dealloc_id, &to_dealloc_jmeths); |
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1719 } else { |
0 | 1720 MutexLocker ml(JmethodIdCreation_lock); |
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1721 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1722 &to_dealloc_id, &to_dealloc_jmeths); |
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1723 } |
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1724 |
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1725 // The lock has been dropped so we can free resources. |
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1726 // Free up either the old cache or the new cache if we allocated one. |
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1727 if (to_dealloc_jmeths != NULL) { |
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1728 FreeHeap(to_dealloc_jmeths); |
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1729 } |
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1730 // free up the new ID since it wasn't needed |
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1731 if (to_dealloc_id != NULL) { |
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1732 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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|
1733 } |
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|
1734 } |
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|
1735 return id; |
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1736 } |
0 | 1737 |
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1738 |
977
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1739 // Common code to fetch the jmethodID from the cache or update the |
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1740 // cache with the new jmethodID. This function should never do anything |
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1741 // that causes the caller to go to a safepoint or we can deadlock with |
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1742 // the VMThread or have cache consistency issues. |
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1743 // |
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1744 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1745 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1746 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1747 jmethodID** to_dealloc_jmeths_p) { |
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1748 assert(new_id != NULL, "sanity check"); |
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1749 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1750 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1751 assert(Threads::number_of_threads() == 0 || |
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1752 SafepointSynchronize::is_at_safepoint() || |
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1753 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1754 |
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1755 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1756 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1757 jmethodID id = NULL; |
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1758 size_t length = 0; |
0 | 1759 |
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1760 if (jmeths == NULL || // no cache yet |
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1761 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1762 if (jmeths != NULL) { |
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1763 // copy any existing entries from the old cache |
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1764 for (size_t index = 0; index < length; index++) { |
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1765 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1766 } |
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1767 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1768 } |
49
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1769 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1770 } else { |
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1771 // fetch jmethodID (if any) from the existing cache |
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1772 id = jmeths[idnum+1]; |
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1773 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
49
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1774 } |
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1775 if (id == NULL) { |
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1776 // No matching jmethodID in the existing cache or we have a new |
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1777 // cache or we just grew the cache. This cache write is done here |
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1778 // by the first thread to win the foot race because a jmethodID |
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1779 // needs to be unique once it is generally available. |
49
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1780 id = new_id; |
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1781 |
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1782 // The jmethodID cache can be read while unlocked so we have to |
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1783 // make sure the new jmethodID is complete before installing it |
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1784 // in the cache. |
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1785 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
49
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1786 } else { |
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1787 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1788 } |
1789 return id; | |
1790 } | |
1791 | |
1792 | |
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1793 // Common code to get the jmethodID cache length and the jmethodID |
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1794 // value at index idnum if there is one. |
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1795 // |
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1796 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1797 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1798 assert(cache != NULL, "sanity check"); |
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1799 assert(length_p != NULL, "sanity check"); |
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1800 assert(id_p != NULL, "sanity check"); |
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1801 |
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1802 // cache size is stored in element[0], other elements offset by one |
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1803 *length_p = (size_t)cache[0]; |
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1804 if (*length_p <= idnum) { // cache is too short |
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1805 *id_p = NULL; |
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1806 } else { |
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1807 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1808 } |
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1809 } |
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1810 |
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1811 |
0 | 1812 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1813 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1814 size_t idnum = (size_t)method->method_idnum(); |
1815 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1816 size_t length; // length assigned as debugging crumb | |
1817 jmethodID id = NULL; | |
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1818 if (jmeths != NULL && // If there is a cache |
0 | 1819 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1820 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1821 } | |
1822 return id; | |
1823 } | |
1824 | |
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1825 int nmethodBucket::decrement() { |
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1826 return Atomic::add(-1, (volatile int *)&_count); |
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1827 } |
0 | 1828 |
1829 // | |
1830 // Walk the list of dependent nmethods searching for nmethods which | |
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1831 // are dependent on the changes that were passed in and mark them for |
0 | 1832 // deoptimization. Returns the number of nmethods found. |
1833 // | |
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1834 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1835 assert_locked_or_safepoint(CodeCache_lock); |
1836 int found = 0; | |
1837 nmethodBucket* b = _dependencies; | |
1838 while (b != NULL) { | |
1839 nmethod* nm = b->get_nmethod(); | |
1840 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1841 // the dependency list may contain nmethods which aren't alive. | |
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1842 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1843 if (TraceDependencies) { |
1844 ResourceMark rm; | |
1845 tty->print_cr("Marked for deoptimization"); | |
1846 tty->print_cr(" context = %s", this->external_name()); | |
1847 changes.print(); | |
1848 nm->print(); | |
1849 nm->print_dependencies(); | |
1850 } | |
1851 nm->mark_for_deoptimization(); | |
1852 found++; | |
1853 } | |
1854 b = b->next(); | |
1855 } | |
1856 return found; | |
1857 } | |
1858 | |
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1859 void InstanceKlass::clean_dependent_nmethods() { |
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1860 assert_locked_or_safepoint(CodeCache_lock); |
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1861 |
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1862 if (has_unloaded_dependent()) { |
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1863 nmethodBucket* b = _dependencies; |
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1864 nmethodBucket* last = NULL; |
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1865 while (b != NULL) { |
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1866 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1867 |
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1868 nmethodBucket* next = b->next(); |
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1869 |
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1870 if (b->count() == 0) { |
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1871 if (last == NULL) { |
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1872 _dependencies = next; |
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1873 } else { |
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1874 last->set_next(next); |
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1875 } |
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1876 delete b; |
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1877 // last stays the same. |
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1878 } else { |
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1879 last = b; |
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1880 } |
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1881 |
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1882 b = next; |
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1883 } |
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1884 set_has_unloaded_dependent(false); |
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1885 } |
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1886 #ifdef ASSERT |
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1887 else { |
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1888 // Verification |
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1889 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1890 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1891 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1892 } |
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1893 } |
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1894 #endif |
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1895 } |
0 | 1896 |
1897 // | |
1898 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1899 // It's possible that an nmethod has multiple dependencies on this klass | |
1900 // so a count is kept for each bucket to guarantee that creation and | |
1901 // deletion of dependencies is consistent. | |
1902 // | |
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1903 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1904 assert_locked_or_safepoint(CodeCache_lock); |
1905 nmethodBucket* b = _dependencies; | |
1906 nmethodBucket* last = NULL; | |
1907 while (b != NULL) { | |
1908 if (nm == b->get_nmethod()) { | |
1909 b->increment(); | |
1910 return; | |
1911 } | |
1912 b = b->next(); | |
1913 } | |
1914 _dependencies = new nmethodBucket(nm, _dependencies); | |
1915 } | |
1916 | |
1917 | |
1918 // | |
1919 // Decrement count of the nmethod in the dependency list and remove | |
1920 // the bucket competely when the count goes to 0. This method must | |
1921 // find a corresponding bucket otherwise there's a bug in the | |
1922 // recording of dependecies. | |
1923 // | |
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1924 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1925 assert_locked_or_safepoint(CodeCache_lock); |
1926 nmethodBucket* b = _dependencies; | |
1927 nmethodBucket* last = NULL; | |
1928 while (b != NULL) { | |
1929 if (nm == b->get_nmethod()) { | |
20278
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1930 int val = b->decrement(); |
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1931 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1932 if (val == 0) { |
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1933 set_has_unloaded_dependent(true); |
0 | 1934 } |
1935 return; | |
1936 } | |
1937 last = b; | |
1938 b = b->next(); | |
1939 } | |
1940 #ifdef ASSERT | |
1941 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1942 nm->print(); | |
1943 #endif // ASSERT | |
1944 ShouldNotReachHere(); | |
1945 } | |
1946 | |
1947 | |
1948 #ifndef PRODUCT | |
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1949 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1950 nmethodBucket* b = _dependencies; |
1951 int idx = 0; | |
1952 while (b != NULL) { | |
1953 nmethod* nm = b->get_nmethod(); | |
1954 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1955 if (!verbose) { | |
1956 nm->print_on(tty, "nmethod"); | |
1957 tty->print_cr(" } "); | |
1958 } else { | |
1959 nm->print(); | |
1960 nm->print_dependencies(); | |
1961 tty->print_cr("--- } "); | |
1962 } | |
1963 b = b->next(); | |
1964 } | |
1965 } | |
1966 | |
1967 | |
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1968 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1969 nmethodBucket* b = _dependencies; |
1970 while (b != NULL) { | |
1971 if (nm == b->get_nmethod()) { | |
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1972 #ifdef ASSERT |
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1973 int count = b->count(); |
20279 | 1974 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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1975 #endif |
0 | 1976 return true; |
1977 } | |
1978 b = b->next(); | |
1979 } | |
1980 return false; | |
1981 } | |
1982 #endif //PRODUCT | |
1983 | |
1984 | |
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1985 // Garbage collection |
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1986 |
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1987 #ifdef ASSERT |
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1988 template <class T> void assert_is_in(T *p) { |
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1989 T heap_oop = oopDesc::load_heap_oop(p); |
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1990 if (!oopDesc::is_null(heap_oop)) { |
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1991 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1992 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1993 } |
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1994 } |
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1995 template <class T> void assert_is_in_closed_subset(T *p) { |
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1996 T heap_oop = oopDesc::load_heap_oop(p); |
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1997 if (!oopDesc::is_null(heap_oop)) { |
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1998 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1999 assert(Universe::heap()->is_in_closed_subset(o), |
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2000 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
113
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2001 } |
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2002 } |
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2003 template <class T> void assert_is_in_reserved(T *p) { |
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2004 T heap_oop = oopDesc::load_heap_oop(p); |
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2005 if (!oopDesc::is_null(heap_oop)) { |
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2006 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2007 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2008 } |
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2009 } |
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2010 template <class T> void assert_nothing(T *p) {} |
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2011 |
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2012 #else |
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2013 template <class T> void assert_is_in(T *p) {} |
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2014 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2015 template <class T> void assert_is_in_reserved(T *p) {} |
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2016 template <class T> void assert_nothing(T *p) {} |
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2017 #endif // ASSERT |
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2018 |
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2019 // |
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2020 // Macros that iterate over areas of oops which are specialized on type of |
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2021 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2022 // |
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2023 // Parameters are: |
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2024 // T - type of oop to point to (either oop or narrowOop) |
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2025 // start_p - starting pointer for region to iterate over |
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2026 // count - number of oops or narrowOops to iterate over |
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2027 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2028 // makes it more efficient to put in a macro rather than making |
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2029 // it a template function) |
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2030 // assert_fn - assert function which is template function because performance |
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2031 // doesn't matter when enabled. |
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2032 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2033 T, start_p, count, do_oop, \ |
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2034 assert_fn) \ |
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2035 { \ |
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2036 T* p = (T*)(start_p); \ |
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2037 T* const end = p + (count); \ |
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2038 while (p < end) { \ |
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2039 (assert_fn)(p); \ |
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2040 do_oop; \ |
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2041 ++p; \ |
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2042 } \ |
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2043 } |
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2044 |
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2045 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2046 T, start_p, count, do_oop, \ |
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2047 assert_fn) \ |
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2048 { \ |
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2049 T* const start = (T*)(start_p); \ |
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2050 T* p = start + (count); \ |
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2051 while (start < p) { \ |
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2052 --p; \ |
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2053 (assert_fn)(p); \ |
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2054 do_oop; \ |
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2055 } \ |
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2056 } |
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2057 |
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2058 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2059 T, start_p, count, low, high, \ |
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2060 do_oop, assert_fn) \ |
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2061 { \ |
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2062 T* const l = (T*)(low); \ |
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2063 T* const h = (T*)(high); \ |
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2064 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2065 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2066 "bounded region must be properly aligned"); \ |
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2067 T* p = (T*)(start_p); \ |
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2068 T* end = p + (count); \ |
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2069 if (p < l) p = l; \ |
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2070 if (end > h) end = h; \ |
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2071 while (p < end) { \ |
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2072 (assert_fn)(p); \ |
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2073 do_oop; \ |
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2074 ++p; \ |
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2075 } \ |
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2076 } |
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2077 |
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2078 |
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2079 // The following macros call specialized macros, passing either oop or |
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2080 // narrowOop as the specialization type. These test the UseCompressedOops |
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2081 // flag. |
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2082 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2083 { \ |
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2084 /* Compute oopmap block range. The common case \ |
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2085 is nonstatic_oop_map_size == 1. */ \ |
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2086 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2087 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2088 if (UseCompressedOops) { \ |
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2089 while (map < end_map) { \ |
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2090 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2091 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2092 do_oop, assert_fn) \ |
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2093 ++map; \ |
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2094 } \ |
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2095 } else { \ |
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2096 while (map < end_map) { \ |
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2097 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2098 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2099 do_oop, assert_fn) \ |
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2100 ++map; \ |
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2101 } \ |
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2102 } \ |
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2103 } |
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2104 |
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2105 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2106 { \ |
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2107 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2108 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2109 if (UseCompressedOops) { \ |
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2110 while (start_map < map) { \ |
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2111 --map; \ |
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2112 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2113 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2114 do_oop, assert_fn) \ |
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2115 } \ |
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2116 } else { \ |
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2117 while (start_map < map) { \ |
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2118 --map; \ |
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2119 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2120 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2121 do_oop, assert_fn) \ |
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2122 } \ |
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2123 } \ |
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2124 } |
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2125 |
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2126 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2127 assert_fn) \ |
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2128 { \ |
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2129 /* Compute oopmap block range. The common case is \ |
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2130 nonstatic_oop_map_size == 1, so we accept the \ |
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2131 usually non-existent extra overhead of examining \ |
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2132 all the maps. */ \ |
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2133 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2134 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2135 if (UseCompressedOops) { \ |
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2136 while (map < end_map) { \ |
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2137 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2138 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2139 low, high, \ |
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2140 do_oop, assert_fn) \ |
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2141 ++map; \ |
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2142 } \ |
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2143 } else { \ |
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2144 while (map < end_map) { \ |
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2145 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2146 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2147 low, high, \ |
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2148 do_oop, assert_fn) \ |
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2149 ++map; \ |
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2150 } \ |
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2151 } \ |
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2152 } |
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2153 |
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2154 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2155 assert(obj != NULL, "can't follow the content of NULL object"); |
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2156 MarkSweep::follow_klass(obj->klass()); |
113
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2157 InstanceKlass_OOP_MAP_ITERATE( \ |
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2158 obj, \ |
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2159 MarkSweep::mark_and_push(p), \ |
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2160 assert_is_in_closed_subset) |
0 | 2161 } |
2162 | |
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2163 #if INCLUDE_ALL_GCS |
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2164 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2165 oop obj) { |
113
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2166 assert(obj != NULL, "can't follow the content of NULL object"); |
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2167 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2168 // Only mark the header and let the scan of the meta-data mark |
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2169 // everything else. |
113
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2170 InstanceKlass_OOP_MAP_ITERATE( \ |
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2171 obj, \ |
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2172 PSParallelCompact::mark_and_push(cm, p), \ |
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2173 assert_is_in) |
0 | 2174 } |
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2175 #endif // INCLUDE_ALL_GCS |
0 | 2176 |
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2177 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2178 // applied to the klass ptr in the object header. |
2179 | |
342
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2180 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2181 \ |
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2182 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2183 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2184 /* header */ \ |
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2185 if_do_metadata_checked(closure, nv_suffix) { \ |
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2186 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2187 } \ |
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2188 InstanceKlass_OOP_MAP_ITERATE( \ |
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2189 obj, \ |
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2190 SpecializationStats:: \ |
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2191 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2192 (closure)->do_oop##nv_suffix(p), \ |
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2193 assert_is_in_closed_subset) \ |
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2194 return size_helper(); \ |
0 | 2195 } |
2196 | |
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2197 #if INCLUDE_ALL_GCS |
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2198 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2199 \ |
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2200 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2201 OopClosureType* closure) { \ |
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2202 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2203 \ |
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2204 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2205 \ |
342
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2206 /* instance variables */ \ |
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2207 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2208 obj, \ |
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2209 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2210 (closure)->do_oop##nv_suffix(p), \ |
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2211 assert_is_in_closed_subset) \ |
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2212 return size_helper(); \ |
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2213 } |
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2214 #endif // INCLUDE_ALL_GCS |
342
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2215 |
113
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2216 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2217 \ |
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2218 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2219 OopClosureType* closure, \ |
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2220 MemRegion mr) { \ |
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2221 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2222 if_do_metadata_checked(closure, nv_suffix) { \ |
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2223 if (mr.contains(obj)) { \ |
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2224 closure->do_klass##nv_suffix(obj->klass()); \ |
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2225 } \ |
113
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2226 } \ |
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2227 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2228 obj, mr.start(), mr.end(), \ |
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2229 (closure)->do_oop##nv_suffix(p), \ |
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2230 assert_is_in_closed_subset) \ |
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2231 return size_helper(); \ |
0 | 2232 } |
2233 | |
2234 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2235 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2236 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2237 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2238 #if INCLUDE_ALL_GCS |
342
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2239 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2240 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2241 #endif // INCLUDE_ALL_GCS |
0 | 2242 |
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2243 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2244 int size = size_helper(); |
113
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2245 InstanceKlass_OOP_MAP_ITERATE( \ |
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2246 obj, \ |
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2247 MarkSweep::adjust_pointer(p), \ |
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2248 assert_is_in) |
0 | 2249 return size; |
2250 } | |
2251 | |
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2252 #if INCLUDE_ALL_GCS |
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2253 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2254 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2255 obj, \ |
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2256 if (PSScavenge::should_scavenge(p)) { \ |
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2257 pm->claim_or_forward_depth(p); \ |
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2258 }, \ |
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2259 assert_nothing ) |
0 | 2260 } |
2261 | |
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2262 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2263 int size = size_helper(); |
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2264 InstanceKlass_OOP_MAP_ITERATE( \ |
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2265 obj, \ |
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2266 PSParallelCompact::adjust_pointer(p), \ |
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2267 assert_is_in) |
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2268 return size; |
0 | 2269 } |
2270 | |
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2271 #endif // INCLUDE_ALL_GCS |
0 | 2272 |
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2273 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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|
2274 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
5998
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|
2275 if (is_interface()) { |
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2276 if (ClassUnloading) { |
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2277 Klass* impl = implementor(); |
5998
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|
2278 if (impl != NULL) { |
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2279 if (!impl->is_loader_alive(is_alive)) { |
5998
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|
2280 // remove this guy |
8693
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|
2281 Klass** klass = adr_implementor(); |
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|
2282 assert(klass != NULL, "null klass"); |
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|
2283 if (klass != NULL) { |
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|
2284 *klass = NULL; |
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|
2285 } |
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|
2286 } |
0 | 2287 } |
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2288 } |
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2289 } |
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2290 } |
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2291 |
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2292 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2293 for (int m = 0; m < methods()->length(); m++) { |
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2294 MethodData* mdo = methods()->at(m)->method_data(); |
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|
2295 if (mdo != NULL) { |
17728
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|
2296 mdo->clean_method_data(is_alive); |
0 | 2297 } |
2298 } | |
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2299 } |
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|
2300 |
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|
2301 |
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|
2302 static void remove_unshareable_in_class(Klass* k) { |
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2303 // remove klass's unshareable info |
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2304 k->remove_unshareable_info(); |
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2305 } |
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2306 |
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2307 void InstanceKlass::remove_unshareable_info() { |
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2308 Klass::remove_unshareable_info(); |
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2309 // Unlink the class |
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2310 if (is_linked()) { |
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2311 unlink_class(); |
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2312 } |
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|
2313 init_implementor(); |
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|
2314 |
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|
2315 constants()->remove_unshareable_info(); |
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2316 |
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2317 for (int i = 0; i < methods()->length(); i++) { |
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2318 Method* m = methods()->at(i); |
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2319 m->remove_unshareable_info(); |
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2320 } |
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2321 |
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2322 // do array classes also. |
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2323 array_klasses_do(remove_unshareable_in_class); |
0 | 2324 } |
2325 | |
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|
2326 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
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2327 // Array classes have null protection domain. |
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|
2328 // --> see ArrayKlass::complete_create_array_klass() |
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2329 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2330 } |
2331 | |
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|
2332 void InstanceKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS) { |
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2333 Klass::restore_unshareable_info(loader_data, protection_domain, 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
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8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
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|
2340 m->restore_unshareable_info(CHECK); |
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|
2341 } |
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|
2342 if (JvmtiExport::has_redefined_a_class()) { |
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2343 // Reinitialize vtable because RedefineClasses may have changed some |
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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 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2359 // returns true IFF is_in_error_state() has been changed as a result of this call. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2360 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2361 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2362 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2363 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2364 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2365 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2366 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2367 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2368 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2369 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2370 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2371 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2372 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2373 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2374 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2375 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2376 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2377 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2378 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2379 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2380 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2381 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2382 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2383 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2384 set_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2385 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2386 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2387 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2388 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2389 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2390 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2391 static void clear_all_breakpoints(Method* m) { |
0 | 2392 m->clear_all_breakpoints(); |
2393 } | |
2394 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2395 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2396 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2397 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2398 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2399 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2400 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2401 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2402 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2403 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2404 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2405 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2406 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
|
2407 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2408 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2409 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2410 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2411 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2412 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2413 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2414 // 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
|
2415 // 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
|
2416 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2417 |
0 | 2418 // Deallocate oop map cache |
2419 if (_oop_map_cache != NULL) { | |
2420 delete _oop_map_cache; | |
2421 _oop_map_cache = NULL; | |
2422 } | |
2423 | |
2424 // Deallocate JNI identifiers for jfieldIDs | |
2425 JNIid::deallocate(jni_ids()); | |
2426 set_jni_ids(NULL); | |
2427 | |
2428 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2429 if (jmeths != (jmethodID*)NULL) { | |
2430 release_set_methods_jmethod_ids(NULL); | |
2431 FreeHeap(jmeths); | |
2432 } | |
2433 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2434 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2435 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2436 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
|
2437 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
|
2438 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2439 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2440 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2441 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2442 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2443 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2444 |
0 | 2445 // release dependencies |
2446 nmethodBucket* b = _dependencies; | |
2447 _dependencies = NULL; | |
2448 while (b != NULL) { | |
2449 nmethodBucket* next = b->next(); | |
2450 delete b; | |
2451 b = next; | |
2452 } | |
2453 | |
2454 // Deallocate breakpoint records | |
2455 if (breakpoints() != 0x0) { | |
2456 methods_do(clear_all_breakpoints); | |
2457 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2458 } | |
2459 | |
2460 // deallocate information about previous versions | |
2461 if (_previous_versions != NULL) { | |
2462 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2463 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2464 delete pv_node; | |
2465 } | |
2466 delete _previous_versions; | |
2467 _previous_versions = NULL; | |
2468 } | |
2469 | |
2470 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2471 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2472 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2473 _cached_class_file = NULL; |
0 | 2474 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2475 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2476 // 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
|
2477 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2478 // 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
|
2479 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2480 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
|
2481 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
|
2482 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2483 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2484 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2485 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2486 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2487 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
|
2488 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2489 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2490 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2491 // 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
|
2492 // 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
|
2493 // 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
|
2494 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2495 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2496 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
|
2497 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2498 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2499 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2500 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2501 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2502 } |
0 | 2503 } |
2504 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2505 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2506 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
|
2507 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
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2508 |
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2509 |
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2510 const char* InstanceKlass::signature_name() const { |
12995
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2511 int hash_len = 0; |
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|
2512 char hash_buf[40]; |
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|
2513 |
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2514 // If this is an anonymous class, append a hash to make the name unique |
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2515 if (is_anonymous()) { |
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2516 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
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2517 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
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2518 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
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2519 hash_len = (int)strlen(hash_buf); |
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|
2520 } |
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|
2521 |
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|
2522 // Get the internal name as a c string |
0 | 2523 const char* src = (const char*) (name()->as_C_string()); |
2524 const int src_length = (int)strlen(src); | |
12995
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2525 |
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|
2526 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
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|
2527 |
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|
2528 // Add L as type indicator |
0 | 2529 int dest_index = 0; |
2530 dest[dest_index++] = 'L'; | |
12995
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|
2531 |
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|
2532 // Add the actual class name |
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|
2533 for (int src_index = 0; src_index < src_length; ) { |
0 | 2534 dest[dest_index++] = src[src_index++]; |
2535 } | |
12995
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|
2536 |
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|
2537 // If we have a hash, append it |
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|
2538 for (int hash_index = 0; hash_index < hash_len; ) { |
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|
2539 dest[dest_index++] = hash_buf[hash_index++]; |
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diff
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|
2540 } |
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diff
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|
2541 |
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diff
changeset
|
2542 // Add the semicolon and the NULL |
0 | 2543 dest[dest_index++] = ';'; |
2544 dest[dest_index] = '\0'; | |
2545 return dest; | |
2546 } | |
2547 | |
2548 // different verisons of is_same_class_package | |
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|
2549 bool InstanceKlass::is_same_class_package(Klass* class2) { |
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|
2550 Klass* class1 = this; |
da91efe96a93
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|
2551 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2552 Symbol* classname1 = class1->name(); |
2553 | |
2554 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2555 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2556 } |
2557 oop classloader2; | |
6983 | 2558 if (class2->oop_is_instance()) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2559 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2560 } else { |
6983 | 2561 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2562 classloader2 = NULL; |
2563 } | |
6983 | 2564 Symbol* classname2 = class2->name(); |
0 | 2565 |
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|
2566 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2567 classloader2, classname2); |
2568 } | |
2569 | |
6725
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coleenp
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|
2570 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2571 Klass* class1 = this; |
da91efe96a93
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|
2572 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2573 Symbol* classname1 = class1->name(); |
0 | 2574 |
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|
2575 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2576 classloader2, classname2); |
2577 } | |
2578 | |
2579 // return true if two classes are in the same package, classloader | |
2580 // and classname information is enough to determine a class's package | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2581 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2582 oop class_loader2, Symbol* class_name2) { |
0 | 2583 if (class_loader1 != class_loader2) { |
2584 return false; | |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2585 } else if (class_name1 == class_name2) { |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2586 return true; // skip painful bytewise comparison |
0 | 2587 } else { |
2588 ResourceMark rm; | |
2589 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2590 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2591 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2592 // Otherwise, we just compare jbyte values between the strings. | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2593 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2594 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2595 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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1972
diff
changeset
|
2596 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
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|
2597 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2598 |
2599 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2600 // One of the two doesn't have a package. Only return true | |
2601 // if the other one also doesn't have a package. | |
2602 return last_slash1 == last_slash2; | |
2603 } else { | |
2604 // Skip over '['s | |
2605 if (*name1 == '[') { | |
2606 do { | |
2607 name1++; | |
2608 } while (*name1 == '['); | |
2609 if (*name1 != 'L') { | |
2610 // Something is terribly wrong. Shouldn't be here. | |
2611 return false; | |
2612 } | |
2613 } | |
2614 if (*name2 == '[') { | |
2615 do { | |
2616 name2++; | |
2617 } while (*name2 == '['); | |
2618 if (*name2 != 'L') { | |
2619 // Something is terribly wrong. Shouldn't be here. | |
2620 return false; | |
2621 } | |
2622 } | |
2623 | |
2624 // Check that package part is identical | |
2625 int length1 = last_slash1 - name1; | |
2626 int length2 = last_slash2 - name2; | |
2627 | |
2628 return UTF8::equal(name1, length1, name2, length2); | |
2629 } | |
2630 } | |
2631 } | |
2632 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2633 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2634 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2635 // Assumes name-signature match |
6725
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coleenp
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|
2636 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2637 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
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coleenp
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|
2638 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
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605
diff
changeset
|
2639 // Private methods can not be overridden |
4aaa9f5e02a8
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605
diff
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|
2640 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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605
diff
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|
2641 return false; |
4aaa9f5e02a8
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605
diff
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|
2642 } |
4aaa9f5e02a8
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parents:
605
diff
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|
2643 // If super method is accessible, then override |
4aaa9f5e02a8
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parents:
605
diff
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|
2644 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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605
diff
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|
2645 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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605
diff
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|
2646 return true; |
4aaa9f5e02a8
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acorn
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605
diff
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|
2647 } |
4aaa9f5e02a8
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605
diff
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|
2648 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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605
diff
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|
2649 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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|
2650 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
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605
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|
2651 } |
0 | 2652 |
665
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6814659: separable cleanups and subroutines for 6655638
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605
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|
2653 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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6266
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|
2654 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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diff
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|
2655 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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|
2656 ... |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2657 } |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2658 */ |
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6814659: separable cleanups and subroutines for 6655638
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|
2659 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2660 // tell if two classes have the same enclosing class (at package level) |
6725
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6266
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|
2661 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
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|
2662 Klass* class2_oop, TRAPS) { |
da91efe96a93
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coleenp
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diff
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|
2663 if (class2_oop == class1()) return true; |
6983 | 2664 if (!class2_oop->oop_is_instance()) return false; |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2665 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2666 |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2667 // must be in same package before we try anything else |
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|
2668 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
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605
diff
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|
2669 return false; |
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6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2670 |
c89f86385056
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diff
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|
2671 // As long as there is an outer1.getEnclosingClass, |
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605
diff
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|
2672 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2673 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2674 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2675 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2676 // Eventually, the walks will terminate as outer1 stops |
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|
2677 // at the top-level class around the original class. |
1126
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diff
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|
2678 bool ignore_inner_is_member; |
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|
2679 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
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diff
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|
2680 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2681 if (next == NULL) break; |
c89f86385056
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605
diff
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|
2682 if (next == class2()) return true; |
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|
2683 outer1 = instanceKlassHandle(THREAD, next); |
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|
2684 } |
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|
2685 |
c89f86385056
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diff
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|
2686 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2687 instanceKlassHandle outer2 = class2; |
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6814659: separable cleanups and subroutines for 6655638
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|
2688 for (;;) { |
1126
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xlu
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1039
diff
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|
2689 bool ignore_inner_is_member; |
6725
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2690 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
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|
2691 CHECK_false); |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2692 if (next == NULL) break; |
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2693 // 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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diff
changeset
|
2694 if (next == class1()) return true; |
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diff
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|
2695 if (next == outer1()) return true; |
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6814659: separable cleanups and subroutines for 6655638
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|
2696 outer2 = instanceKlassHandle(THREAD, next); |
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6814659: separable cleanups and subroutines for 6655638
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|
2697 } |
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|
2698 |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2699 // 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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diff
changeset
|
2700 // two classes, we know they are in separate package members. |
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6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
2701 return false; |
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6814659: separable cleanups and subroutines for 6655638
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diff
changeset
|
2702 } |
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diff
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|
2703 |
0 | 2704 |
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2705 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2706 jint access = access_flags().as_int(); |
2707 | |
2708 // But check if it happens to be member class. | |
6725
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2709 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
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|
2710 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
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|
2711 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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diff
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|
2712 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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2713 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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2714 // 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.
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|
2715 if (ioff == 0) continue; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2716 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
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|
2717 // 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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2718 // since we are looking for the flags for our self. |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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2719 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
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2720 if ((ik->name() == inner_name)) { |
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2721 // This is really a member class. |
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2722 access = iter.inner_access_flags(); |
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|
2723 break; |
0 | 2724 } |
2725 } | |
2726 // Remember to strip ACC_SUPER bit | |
2727 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2728 } | |
2729 | |
6725
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2730 jint InstanceKlass::jvmti_class_status() const { |
0 | 2731 jint result = 0; |
2732 | |
2733 if (is_linked()) { | |
2734 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2735 } | |
2736 | |
2737 if (is_initialized()) { | |
2738 assert(is_linked(), "Class status is not consistent"); | |
2739 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2740 } | |
2741 if (is_in_error_state()) { | |
2742 result |= JVMTI_CLASS_STATUS_ERROR; | |
2743 } | |
2744 return result; | |
2745 } | |
2746 | |
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2747 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2748 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2749 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2750 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2751 / itableOffsetEntry::size(); | |
2752 | |
2753 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2754 // If the interface isn't implemented by the receiver class, |
0 | 2755 // the VM should throw IncompatibleClassChangeError. |
2756 if (cnt >= nof_interfaces) { | |
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2757 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2758 } |
2759 | |
6725
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2760 Klass* ik = ioe->interface_klass(); |
0 | 2761 if (ik == holder) break; |
2762 } | |
2763 | |
6725
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2764 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2765 Method* m = ime[index].method(); |
0 | 2766 if (m == NULL) { |
6725
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coleenp
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|
2767 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2768 } |
2769 return m; | |
2770 } | |
2771 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2772 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2773 #if INCLUDE_JVMTI |
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8009130: Lambda: Fix access controls, loader constraints.
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|
2774 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2775 // 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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diff
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|
2776 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2777 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
2778 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2779 int methods_length, bool* trace_name_printed) { |
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8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
2780 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2781 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2782 for (int j = 0; j < methods_length; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
changeset
|
2783 Method* old_method = old_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2784 Method* new_method = new_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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changeset
|
2785 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
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|
2786 for (int index = 0; index < default_methods()->length(); index ++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2787 if (default_methods()->at(index) == old_method) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
changeset
|
2788 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2789 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2790 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2791 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2792 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2793 external_name(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2794 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2795 *trace_name_printed = true; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2796 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2797 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2798 new_method->name()->as_C_string(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2799 new_method->signature()->as_C_string())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2800 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2801 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2802 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2803 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2804 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2805 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2806 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2807 |
0 | 2808 // On-stack replacement stuff |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2809 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2810 // only one compilation can be active |
2811 NEEDS_CLEANUP | |
2812 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2813 OsrList_lock->lock_without_safepoint_check(); | |
2814 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2815 n->set_osr_link(osr_nmethods_head()); |
0 | 2816 set_osr_nmethods_head(n); |
1783 | 2817 // Raise the highest osr level if necessary |
2818 if (TieredCompilation) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2819 Method* m = n->method(); |
1783 | 2820 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2821 } | |
0 | 2822 // Remember to unlock again |
2823 OsrList_lock->unlock(); | |
1783 | 2824 |
2825 // Get rid of the osr methods for the same bci that have lower levels. | |
2826 if (TieredCompilation) { | |
2827 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2828 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2829 if (inv != NULL && inv->is_in_use()) { | |
2830 inv->make_not_entrant(); | |
2831 } | |
2832 } | |
2833 } | |
0 | 2834 } |
2835 | |
2836 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2837 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2838 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2839 OsrList_lock->lock_without_safepoint_check(); | |
2840 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2841 nmethod* last = NULL; | |
2842 nmethod* cur = osr_nmethods_head(); | |
1783 | 2843 int max_level = CompLevel_none; // Find the max comp level excluding n |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2844 Method* m = n->method(); |
0 | 2845 // Search for match |
2846 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2847 if (TieredCompilation && m == cur->method()) { |
1783 | 2848 // Find max level before n |
2849 max_level = MAX2(max_level, cur->comp_level()); | |
2850 } | |
0 | 2851 last = cur; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
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|
2852 cur = cur->osr_link(); |
0 | 2853 } |
1783 | 2854 nmethod* next = NULL; |
0 | 2855 if (cur == n) { |
1783 | 2856 next = cur->osr_link(); |
0 | 2857 if (last == NULL) { |
2858 // Remove first element | |
1783 | 2859 set_osr_nmethods_head(next); |
0 | 2860 } else { |
1783 | 2861 last->set_osr_link(next); |
0 | 2862 } |
2863 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
changeset
|
2864 n->set_osr_link(NULL); |
1783 | 2865 if (TieredCompilation) { |
2866 cur = next; | |
2867 while (cur != NULL) { | |
2868 // 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
changeset
|
2869 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
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17937
diff
changeset
|
2870 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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|
2871 } |
1783 | 2872 cur = cur->osr_link(); |
2873 } | |
2874 m->set_highest_osr_comp_level(max_level); | |
2875 } | |
0 | 2876 // Remember to unlock again |
2877 OsrList_lock->unlock(); | |
2878 } | |
2879 | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2880 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2881 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2882 OsrList_lock->lock_without_safepoint_check(); | |
2883 nmethod* osr = osr_nmethods_head(); | |
1783 | 2884 nmethod* best = NULL; |
0 | 2885 while (osr != NULL) { |
2886 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2887 // There can be a time when a c1 osr method exists but we are waiting |
2888 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2889 // the c1 version and only be able to find the c2 version. However | |
2890 // while we overflow in the c1 code at back branches we don't want to | |
2891 // try and switch to the same code as we are already running | |
2892 | |
0 | 2893 if (osr->method() == m && |
2894 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2895 if (match_level) { |
2896 if (osr->comp_level() == comp_level) { | |
2897 // Found a match - return it. | |
2898 OsrList_lock->unlock(); | |
2899 return osr; | |
2900 } | |
2901 } else { | |
2902 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2903 if (osr->comp_level() == CompLevel_highest_tier) { | |
2904 // Found the best possible - return it. | |
2905 OsrList_lock->unlock(); | |
2906 return osr; | |
2907 } | |
2908 best = osr; | |
2909 } | |
2910 } | |
0 | 2911 } |
989
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6863023: need non-perm oops in code cache for JSR 292
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diff
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|
2912 osr = osr->osr_link(); |
0 | 2913 } |
2914 OsrList_lock->unlock(); | |
1783 | 2915 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2916 return best; | |
2917 } | |
0 | 2918 return NULL; |
2919 } | |
2920 | |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2921 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2922 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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diff
changeset
|
2923 MutexLocker ml(MemberNameTable_lock); |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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10343
diff
changeset
|
2924 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2925 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2926 |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2927 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2928 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2929 } |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2930 _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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parents:
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diff
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|
2931 } |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2932 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2933 oop InstanceKlass::get_member_name(int index) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2934 MutexLocker ml(MemberNameTable_lock); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2935 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2936 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2937 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2938 if (_member_names == NULL) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2939 return NULL; |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2940 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2941 oop mem_name =_member_names->get_member_name(index); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2942 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2943 } |
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8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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changeset
|
2944 |
0 | 2945 // ----------------------------------------------------------------------------------------------------- |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2946 // Printing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2947 |
0 | 2948 #ifndef PRODUCT |
2949 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2950 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2951 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2952 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2953 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2954 }; |
da91efe96a93
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changeset
|
2955 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
12067
diff
changeset
|
2956 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
|
2957 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
|
2958 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2959 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
|
2960 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
|
2961 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2962 ((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
|
2963 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2964 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2965 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2966 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2967 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2968 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2969 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2970 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2971 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2972 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2973 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2974 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
|
2975 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2976 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2977 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2978 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2979 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2980 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2981 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2982 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2983 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2984 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2985 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2986 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2987 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2988 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2989 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2997 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2998 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 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
|
3001 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
|
3002 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3003 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3004 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
|
3005 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3008 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
|
3009 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
|
3010 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3011 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3012 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3013 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
|
3014 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3015 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3016 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3017 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
|
3018 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3019 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
|
3020 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
|
3021 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
|
3022 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3023 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3025 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3026 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3027 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
|
3028 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3029 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3030 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3031 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3032 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3033 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3034 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3035 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3036 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 } |
8031 | 3038 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3039 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3040 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3041 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3042 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3043 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3044 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3045 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
|
3046 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
|
3047 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3048 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3049 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3050 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
|
3051 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3052 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3053 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3054 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3055 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3056 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3057 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3058 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3059 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3060 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
|
3061 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
|
3062 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
|
3063 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
|
3064 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
|
3065 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
|
3066 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
|
3067 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3068 ((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
|
3069 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
|
3070 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3071 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3072 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3073 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3074 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3075 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3076 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3077 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
|
3078 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3079 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3080 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3081 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3082 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3083 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3084 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3085 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3086 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
|
3087 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
|
3088 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3089 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3090 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3091 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3092 |
0 | 3093 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3094 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3095 if (_obj == NULL) { |
0 | 3096 fd->print_on(_st); |
3097 _st->cr(); | |
3098 } else { | |
3099 fd->print_on_for(_st, _obj); | |
3100 _st->cr(); | |
3101 } | |
3102 } | |
3103 | |
3104 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3105 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3106 Klass::oop_print_on(obj, st); |
3107 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3108 if (this == SystemDictionary::String_klass()) { |
0 | 3109 typeArrayOop value = java_lang_String::value(obj); |
3110 juint offset = java_lang_String::offset(obj); | |
3111 juint length = java_lang_String::length(obj); | |
3112 if (value != NULL && | |
3113 value->is_typeArray() && | |
3114 offset <= (juint) value->length() && | |
3115 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3116 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3117 java_lang_String::print(obj, st); |
0 | 3118 st->cr(); |
3119 if (!WizardMode) return; // that is enough | |
3120 } | |
3121 } | |
3122 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3123 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
|
3124 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3125 do_nonstatic_fields(&print_field); |
0 | 3126 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3127 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3128 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3129 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3130 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3131 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3132 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3133 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3134 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3135 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3136 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3137 array_klass->print_value_on_maybe_null(st); |
0 | 3138 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3139 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
|
3140 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
|
3141 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
|
3142 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
|
3143 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
|
3144 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3145 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3146 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3147 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3148 st->cr(); |
0 | 3149 } |
3150 } | |
3151 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3152 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3153 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3154 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3155 st->print("a "); |
3156 name()->print_value_on(st); | |
3157 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3158 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3159 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3160 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3161 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3162 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3163 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3164 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3165 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3166 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3167 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3168 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3169 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3170 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3171 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3172 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3173 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3174 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3175 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3176 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3177 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3178 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3179 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3180 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3181 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3182 } 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
|
3183 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
|
3184 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3185 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3186 vmentry->print_value_on(st); |
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3187 } |
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3188 } else if (this == SystemDictionary::MemberName_klass()) { |
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3189 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
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3190 if (vmtarget != NULL) { |
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3191 st->print(" = "); |
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3192 vmtarget->print_value_on(st); |
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3193 } else { |
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3194 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
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3195 st->print("."); |
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3196 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
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3197 } |
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3198 } |
0 | 3199 } |
3200 | |
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3201 const char* InstanceKlass::internal_name() const { |
0 | 3202 return external_name(); |
3203 } | |
3204 | |
7956 | 3205 #if INCLUDE_SERVICES |
3206 // Size Statistics | |
3207 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3208 Klass::collect_statistics(sz); | |
3209 | |
3210 sz->_inst_size = HeapWordSize * size_helper(); | |
3211 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3212 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3213 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3214 ((is_interface() || is_anonymous()) ? | |
3215 align_object_offset(nonstatic_oop_map_size()) : | |
3216 nonstatic_oop_map_size()); | |
3217 | |
3218 int n = 0; | |
3219 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3220 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3221 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3222 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3223 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3224 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3225 sz->_ro_bytes += n; | |
3226 | |
3227 const ConstantPool* cp = constants(); | |
3228 if (cp) { | |
3229 cp->collect_statistics(sz); | |
3230 } | |
3231 | |
3232 const Annotations* anno = annotations(); | |
3233 if (anno) { | |
3234 anno->collect_statistics(sz); | |
3235 } | |
3236 | |
3237 const Array<Method*>* methods_array = methods(); | |
3238 if (methods()) { | |
3239 for (int i = 0; i < methods_array->length(); i++) { | |
3240 Method* method = methods_array->at(i); | |
3241 if (method) { | |
3242 sz->_method_count ++; | |
3243 method->collect_statistics(sz); | |
3244 } | |
3245 } | |
3246 } | |
3247 } | |
3248 #endif // INCLUDE_SERVICES | |
3249 | |
0 | 3250 // Verification |
3251 | |
3252 class VerifyFieldClosure: public OopClosure { | |
113
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3253 protected: |
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3254 template <class T> void do_oop_work(T* p) { |
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3255 oop obj = oopDesc::load_decode_heap_oop(p); |
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3256 if (!obj->is_oop_or_null()) { |
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3257 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3258 Universe::print(); |
3259 guarantee(false, "boom"); | |
3260 } | |
3261 } | |
113
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3262 public: |
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3263 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3264 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3265 }; |
3266 | |
17674
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3267 void InstanceKlass::verify_on(outputStream* st) { |
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3268 #ifndef PRODUCT |
11034 | 3269 // Avoid redundant verifies, this really should be in product. |
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3270 if (_verify_count == Universe::verify_count()) return; |
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3271 _verify_count = Universe::verify_count(); |
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3272 #endif |
11034 | 3273 |
3274 // Verify Klass | |
17674
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3275 Klass::verify_on(st); |
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3276 |
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3277 // Verify that klass is present in ClassLoaderData |
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3278 guarantee(class_loader_data()->contains_klass(this), |
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3279 "this class isn't found in class loader data"); |
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3280 |
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3281 // Verify vtables |
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3282 if (is_linked()) { |
11034 | 3283 ResourceMark rm; |
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3284 // $$$ This used to be done only for m/s collections. Doing it |
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3285 // always seemed a valid generalization. (DLD -- 6/00) |
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3286 vtable()->verify(st); |
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3287 } |
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3288 |
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3289 // Verify first subklass |
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3290 if (subklass_oop() != NULL) { |
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3291 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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3292 } |
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3293 |
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3294 // Verify siblings |
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3295 Klass* super = this->super(); |
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3296 Klass* sib = next_sibling(); |
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3297 if (sib != NULL) { |
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3298 if (sib == this) { |
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3299 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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3300 } |
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3301 |
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3302 guarantee(sib->is_klass(), "should be klass"); |
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3303 guarantee(sib->super() == super, "siblings should have same superklass"); |
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3304 } |
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3305 |
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3306 // Verify implementor fields |
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3307 Klass* im = implementor(); |
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|
3308 if (im != NULL) { |
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|
3309 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3310 guarantee(im->is_klass(), "should be klass"); |
6983 | 3311 guarantee(!im->is_interface() || im == this, |
6725
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3312 "implementors cannot be interfaces"); |
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|
3313 } |
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3314 |
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3315 // Verify local interfaces |
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3316 if (local_interfaces()) { |
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3317 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3318 for (int j = 0; j < local_interfaces->length(); j++) { |
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3319 Klass* e = local_interfaces->at(j); |
6983 | 3320 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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3321 } |
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|
3322 } |
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3323 |
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3324 // Verify transitive interfaces |
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3325 if (transitive_interfaces() != NULL) { |
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3326 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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3327 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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3328 Klass* e = transitive_interfaces->at(j); |
6983 | 3329 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
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3330 } |
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3331 } |
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3332 |
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3333 // Verify methods |
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3334 if (methods() != NULL) { |
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3335 Array<Method*>* methods = this->methods(); |
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3336 for (int j = 0; j < methods->length(); j++) { |
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3337 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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3338 } |
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3339 for (int j = 0; j < methods->length() - 1; j++) { |
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3340 Method* m1 = methods->at(j); |
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3341 Method* m2 = methods->at(j + 1); |
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3342 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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3343 } |
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|
3344 } |
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3345 |
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3346 // Verify method ordering |
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3347 if (method_ordering() != NULL) { |
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3348 Array<int>* method_ordering = this->method_ordering(); |
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3349 int length = method_ordering->length(); |
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3350 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
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diff
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|
3351 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
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|
3352 guarantee(length == methods()->length(), "invalid method ordering length"); |
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3353 jlong sum = 0; |
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|
3354 for (int j = 0; j < length; j++) { |
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3355 int original_index = method_ordering->at(j); |
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|
3356 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3357 guarantee(original_index < length, "invalid method ordering index"); |
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|
3358 sum += original_index; |
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|
3359 } |
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|
3360 // Verify sum of indices 0,1,...,length-1 |
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|
3361 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3362 } else { |
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|
3363 guarantee(length == 0, "invalid method ordering length"); |
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|
3364 } |
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|
3365 } |
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|
3366 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3367 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3368 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3369 Array<Method*>* methods = this->default_methods(); |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3370 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3371 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3372 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3373 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3374 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3375 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3376 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3377 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3378 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3379 |
6725
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|
3380 // Verify JNI static field identifiers |
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|
3381 if (jni_ids() != NULL) { |
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|
3382 jni_ids()->verify(this); |
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|
3383 } |
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|
3384 |
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|
3385 // Verify other fields |
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|
3386 if (array_klasses() != NULL) { |
da91efe96a93
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|
3387 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3388 } |
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|
3389 if (constants() != NULL) { |
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|
3390 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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|
3391 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3392 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3393 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
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diff
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|
3394 guarantee(host->is_klass(), "should be klass"); |
6725
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|
3395 } |
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|
3396 } |
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|
3397 |
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|
3398 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3399 Klass::oop_verify_on(obj, st); |
3400 VerifyFieldClosure blk; | |
6725
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|
3401 obj->oop_iterate_no_header(&blk); |
0 | 3402 } |
3403 | |
6725
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|
3404 |
113
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diff
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|
3405 // JNIid class for jfieldIDs only |
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diff
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|
3406 // Note to reviewers: |
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diff
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|
3407 // These JNI functions are just moved over to column 1 and not changed |
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diff
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|
3408 // in the compressed oops workspace. |
6725
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|
3409 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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diff
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|
3410 _holder = holder; |
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diff
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|
3411 _offset = offset; |
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diff
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|
3412 _next = next; |
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diff
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|
3413 debug_only(_is_static_field_id = false;) |
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diff
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|
3414 } |
0 | 3415 |
3416 | |
113
ba764ed4b6f2
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diff
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|
3417 JNIid* JNIid::find(int offset) { |
ba764ed4b6f2
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diff
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|
3418 JNIid* current = this; |
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52
diff
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|
3419 while (current != NULL) { |
ba764ed4b6f2
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diff
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|
3420 if (current->offset() == offset) return current; |
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diff
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|
3421 current = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
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|
3422 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3423 return NULL; |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3424 } |
0 | 3425 |
3426 void JNIid::deallocate(JNIid* current) { | |
113
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52
diff
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|
3427 while (current != NULL) { |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3428 JNIid* next = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3429 delete current; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
52
diff
changeset
|
3430 current = next; |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3431 } |
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parents:
52
diff
changeset
|
3432 } |
0 | 3433 |
3434 | |
6725
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|
3435 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3436 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3437 int end_field_offset; |
6725
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|
3438 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3439 |
113
ba764ed4b6f2
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diff
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|
3440 JNIid* current = this; |
ba764ed4b6f2
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52
diff
changeset
|
3441 while (current != NULL) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3442 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3443 #ifdef ASSERT |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3444 int o = current->offset(); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3445 if (current->is_static_field_id()) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3446 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
ba764ed4b6f2
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52
diff
changeset
|
3447 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3448 #endif |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3449 current = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3450 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3451 } |
0 | 3452 |
3453 | |
3454 #ifdef ASSERT | |
6725
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|
3455 void InstanceKlass::set_init_state(ClassState state) { |
da91efe96a93
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|
3456 bool good_state = is_shared() ? (_init_state <= state) |
113
ba764ed4b6f2
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diff
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|
3457 : (_init_state < state); |
ba764ed4b6f2
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52
diff
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|
3458 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
parents:
4006
diff
changeset
|
3459 _init_state = (u1)state; |
113
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diff
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|
3460 } |
0 | 3461 #endif |
3462 | |
3463 | |
3464 // RedefineClasses() support for previous versions: | |
3465 | |
6725
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diff
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|
3466 // Purge previous versions |
da91efe96a93
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diff
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|
3467 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
da91efe96a93
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coleenp
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|
3468 if (ik->previous_versions() != NULL) { |
da91efe96a93
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|
3469 // This klass has previous versions so see what we can cleanup |
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|
3470 // while it is safe to do so. |
da91efe96a93
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|
3471 |
da91efe96a93
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diff
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|
3472 int deleted_count = 0; // leave debugging breadcrumbs |
da91efe96a93
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diff
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|
3473 int live_count = 0; |
da91efe96a93
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|
3474 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
da91efe96a93
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|
3475 ClassLoaderData::the_null_class_loader_data() : |
da91efe96a93
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diff
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|
3476 ik->class_loader_data(); |
da91efe96a93
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diff
changeset
|
3477 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3478 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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|
3479 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3480 ik->external_name(), ik->previous_versions()->length())); |
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|
3481 |
da91efe96a93
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|
3482 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
da91efe96a93
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diff
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|
3483 // check the previous versions array |
da91efe96a93
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diff
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|
3484 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
da91efe96a93
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|
3485 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3486 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3487 |
da91efe96a93
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|
3488 ConstantPool* pvcp = cp_ref; |
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|
3489 if (!pvcp->on_stack()) { |
da91efe96a93
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|
3490 // If the constant pool isn't on stack, none of the methods |
da91efe96a93
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|
3491 // are executing. Delete all the methods, the constant pool and |
da91efe96a93
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diff
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|
3492 // and this previous version node. |
da91efe96a93
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diff
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|
3493 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
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|
3494 if (method_refs != NULL) { |
da91efe96a93
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|
3495 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
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|
3496 Method* method = method_refs->at(j); |
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diff
changeset
|
3497 assert(method != NULL, "method ref was unexpectedly cleared"); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3498 method_refs->remove_at(j); |
da91efe96a93
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diff
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|
3499 // method will be freed with associated class. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3500 } |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3501 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3502 // Remove the constant pool |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3503 delete pv_node; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3504 // Since we are traversing the array backwards, we don't have to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3505 // do anything special with the index. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3506 ik->previous_versions()->remove_at(i); |
da91efe96a93
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diff
changeset
|
3507 deleted_count++; |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3508 continue; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3509 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3510 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3511 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3512 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3513 live_count++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3514 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3515 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3516 // At least one method is live in this previous version, clean out |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3517 // the others or mark them as obsolete. |
da91efe96a93
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coleenp
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diff
changeset
|
3518 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3519 if (method_refs != NULL) { |
da91efe96a93
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diff
changeset
|
3520 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3521 method_refs->length())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3522 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3523 Method* method = method_refs->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3524 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3525 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3526 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3527 // 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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6266
diff
changeset
|
3528 // 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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|
3529 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3530 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3531 } else if (emcp_method_count == 0) { |
da91efe96a93
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coleenp
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diff
changeset
|
3532 method->set_is_obsolete(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3533 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3534 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3535 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3536 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3537 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3538 method->signature()->as_C_string(), j, i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3539 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3540 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3541 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3542 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3543 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3544 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3545 ("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
|
3546 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3547 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3548 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3549 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3550 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3551 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3552 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3553 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3554 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3555 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3556 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3557 // Potentially add an information node that contains pointers to the |
0 | 3558 // 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
|
3559 // 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
|
3560 // 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
|
3561 // 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
|
3562 // 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
|
3563 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3564 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
|
3565 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3566 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
|
3567 "only VMThread can add previous versions"); |
0 | 3568 |
3569 if (_previous_versions == NULL) { | |
3570 // This is the first previous version so make some space. | |
3571 // Start with 2 elements under the assumption that the class | |
3572 // won't be redefined much. | |
6197 | 3573 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3574 GrowableArray<PreviousVersionNode *>(2, true); |
3575 } | |
3576 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3577 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3578 |
0 | 3579 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3580 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
|
3581 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3582 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
|
3583 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3584 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3585 // 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
|
3586 // 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
|
3587 // 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
|
3588 // 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
|
3589 // 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
|
3590 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3591 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3592 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3593 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3594 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3595 // 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
|
3596 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
|
3597 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3598 ("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
|
3599 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3600 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3601 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
|
3602 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3603 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
|
3604 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3605 // 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
|
3606 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
|
3607 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3608 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3609 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3610 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3611 // 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
|
3612 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3613 } |
0 | 3614 } |
3615 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3616 // 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
|
3617 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
|
3618 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3619 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3620 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3621 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3622 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3623 // 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
|
3624 // is a good time to clear out unused references. |
0 | 3625 |
3626 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3627 _previous_versions->length())); | |
3628 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3629 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3630 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3631 |
3632 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3633 | |
3634 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
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3635 _previous_versions->length() > 0) { |
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3636 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3637 // clear out any matching EMCP method entries the hard way. |
3638 int local_count = 0; | |
3639 for (int i = 0; i < old_methods->length(); i++) { | |
3640 if (!emcp_methods->at(i)) { | |
3641 // only obsolete methods are interesting | |
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3642 Method* old_method = old_methods->at(i); |
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3643 Symbol* m_name = old_method->name(); |
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3644 Symbol* m_signature = old_method->signature(); |
0 | 3645 |
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3646 // we might not have added the last entry |
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3647 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
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3648 // check the previous versions array for non executing obsolete methods |
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3649 PreviousVersionNode * pv_node = _previous_versions->at(j); |
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3650 |
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3651 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3652 if (method_refs == NULL) { |
3653 // We have run into a PreviousVersion generation where | |
3654 // all methods were made obsolete during that generation's | |
3655 // RedefineClasses() operation. At the time of that | |
3656 // operation, all EMCP methods were flushed so we don't | |
3657 // have to go back any further. | |
3658 // | |
3659 // A NULL method_refs is different than an empty method_refs. | |
3660 // We cannot infer any optimizations about older generations | |
3661 // from an empty method_refs for the current generation. | |
3662 break; | |
3663 } | |
3664 | |
3665 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
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3666 Method* method = method_refs->at(k); |
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3667 |
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3668 if (!method->is_obsolete() && |
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3669 method->name() == m_name && |
0 | 3670 method->signature() == m_signature) { |
3671 // The current RedefineClasses() call has made all EMCP | |
3672 // versions of this method obsolete so mark it as obsolete | |
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3673 // and remove the reference. |
0 | 3674 RC_TRACE(0x00000400, |
3675 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3676 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3677 | |
3678 method->set_is_obsolete(); | |
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3679 // Leave obsolete methods on the previous version list to |
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3680 // clean up later. |
0 | 3681 break; |
3682 } | |
3683 } | |
3684 | |
3685 // The previous loop may not find a matching EMCP method, but | |
3686 // that doesn't mean that we can optimize and not go any | |
3687 // further back in the PreviousVersion generations. The EMCP | |
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3688 // method for this generation could have already been deleted, |
0 | 3689 // but there still may be an older EMCP method that has not |
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3690 // been deleted. |
0 | 3691 } |
3692 | |
3693 if (++local_count >= obsolete_method_count) { | |
3694 // no more obsolete methods so bail out now | |
3695 break; | |
3696 } | |
3697 } | |
3698 } | |
3699 } | |
3700 } // end add_previous_version() | |
3701 | |
3702 | |
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3703 // Determine if InstanceKlass has a previous version. |
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3704 bool InstanceKlass::has_previous_version() const { |
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3705 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3706 } // end has_previous_version() |
3707 | |
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3708 |
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3709 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3710 Method* m = NULL; |
0 | 3711 if (idnum < methods()->length()) { |
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3712 m = methods()->at(idnum); |
0 | 3713 } |
3714 if (m == NULL || m->method_idnum() != idnum) { | |
3715 for (int index = 0; index < methods()->length(); ++index) { | |
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3716 m = methods()->at(index); |
0 | 3717 if (m->method_idnum() == idnum) { |
3718 return m; | |
3719 } | |
3720 } | |
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3721 // None found, return null for the caller to handle. |
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3722 return NULL; |
0 | 3723 } |
3724 return m; | |
3725 } | |
3726 | |
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3727 jint InstanceKlass::get_cached_class_file_len() { |
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3728 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3729 } |
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3730 |
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3731 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3732 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3733 } |
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3734 |
0 | 3735 |
3736 // Construct a PreviousVersionNode entry for the array hung off | |
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3737 // the InstanceKlass. |
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3738 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3739 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3740 |
3741 _prev_constant_pool = prev_constant_pool; | |
3742 _prev_EMCP_methods = prev_EMCP_methods; | |
3743 } | |
3744 | |
3745 | |
3746 // Destroy a PreviousVersionNode | |
3747 PreviousVersionNode::~PreviousVersionNode() { | |
3748 if (_prev_constant_pool != NULL) { | |
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3749 _prev_constant_pool = NULL; |
0 | 3750 } |
3751 | |
3752 if (_prev_EMCP_methods != NULL) { | |
3753 delete _prev_EMCP_methods; | |
3754 } | |
3755 } | |
3756 | |
3757 // Construct a helper for walking the previous versions array | |
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3758 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3759 _thread = thread; |
0 | 3760 _previous_versions = ik->previous_versions(); |
3761 _current_index = 0; | |
3762 _current_p = NULL; | |
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3763 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3764 } |
3765 | |
3766 | |
3767 // Return the interesting information for the next previous version | |
3768 // of the klass. Returns NULL if there are no more previous versions. | |
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3769 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3770 if (_previous_versions == NULL) { |
3771 // no previous versions so nothing to return | |
3772 return NULL; | |
3773 } | |
3774 | |
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3775 _current_p = NULL; // reset to NULL |
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3776 _current_constant_pool_handle = NULL; |
0 | 3777 |
3778 int length = _previous_versions->length(); | |
3779 | |
3780 while (_current_index < length) { | |
3781 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3782 |
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3783 // Save a handle to the constant pool for this previous version, |
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3784 // which keeps all the methods from being deallocated. |
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3785 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3786 _current_p = pv_node; |
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3787 return pv_node; |
0 | 3788 } |
3789 | |
3790 return NULL; | |
3791 } // end next_previous_version() |