Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 20279:870c03421152
8049426: Minor cleanups after G1 class unloading
Reviewed-by: stefank, brutisso
author | ehelin |
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date | Wed, 09 Jul 2014 16:44:30 +0200 |
parents | 2c6ef90f030a |
children | 6e0cb14ce59b a8ea2f110d87 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/iterator.inline.hpp" |
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39 #include "memory/metadataFactory.hpp" |
1972 | 40 #include "memory/oopFactory.hpp" |
3938 | 41 #include "oops/fieldStreams.hpp" |
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42 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 43 #include "oops/instanceKlass.hpp" |
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44 #include "oops/instanceMirrorKlass.hpp" |
1972 | 45 #include "oops/instanceOop.hpp" |
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46 #include "oops/klass.inline.hpp" |
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47 #include "oops/method.hpp" |
1972 | 48 #include "oops/oop.inline.hpp" |
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49 #include "oops/symbol.hpp" |
1972 | 50 #include "prims/jvmtiExport.hpp" |
51 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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52 #include "prims/jvmtiRedefineClasses.hpp" |
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53 #include "prims/methodComparator.hpp" |
1972 | 54 #include "runtime/fieldDescriptor.hpp" |
55 #include "runtime/handles.inline.hpp" | |
56 #include "runtime/javaCalls.hpp" | |
57 #include "runtime/mutexLocker.hpp" | |
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58 #include "runtime/orderAccess.inline.hpp" |
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59 #include "runtime/thread.inline.hpp" |
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60 #include "services/classLoadingService.hpp" |
1972 | 61 #include "services/threadService.hpp" |
62 #include "utilities/dtrace.hpp" | |
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63 #include "utilities/macros.hpp" |
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64 #if INCLUDE_ALL_GCS |
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65 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 66 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
67 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
68 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
69 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
70 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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71 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 72 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
73 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
74 #include "oops/oop.pcgc.inline.hpp" | |
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75 #endif // INCLUDE_ALL_GCS |
1972 | 76 #ifdef COMPILER1 |
77 #include "c1/c1_Compiler.hpp" | |
78 #endif | |
0 | 79 |
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80 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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81 |
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82 #ifdef DTRACE_ENABLED |
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83 |
4006 | 84 #ifndef USDT2 |
85 | |
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86 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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87 char*, intptr_t, oop, intptr_t); |
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88 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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89 char*, intptr_t, oop, intptr_t, int); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 |
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103 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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104 { \ |
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105 char* data = NULL; \ |
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106 int len = 0; \ |
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107 Symbol* name = (clss)->name(); \ |
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108 if (name != NULL) { \ |
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109 data = (char*)name->bytes(); \ |
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110 len = name->utf8_length(); \ |
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111 } \ |
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112 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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113 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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114 } |
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115 |
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116 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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117 { \ |
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118 char* data = NULL; \ |
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119 int len = 0; \ |
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120 Symbol* name = (clss)->name(); \ |
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121 if (name != NULL) { \ |
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122 data = (char*)name->bytes(); \ |
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123 len = name->utf8_length(); \ |
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124 } \ |
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125 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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126 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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127 } |
4006 | 128 #else /* USDT2 */ |
129 | |
130 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
131 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
132 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
133 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
134 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
135 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
136 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
137 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
138 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
139 { \ | |
140 char* data = NULL; \ | |
141 int len = 0; \ | |
142 Symbol* name = (clss)->name(); \ | |
143 if (name != NULL) { \ | |
144 data = (char*)name->bytes(); \ | |
145 len = name->utf8_length(); \ | |
146 } \ | |
147 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
148 data, len, (clss)->class_loader(), thread_type); \ | |
149 } | |
150 | |
151 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
152 { \ | |
153 char* data = NULL; \ | |
154 int len = 0; \ | |
155 Symbol* name = (clss)->name(); \ | |
156 if (name != NULL) { \ | |
157 data = (char*)name->bytes(); \ | |
158 len = name->utf8_length(); \ | |
159 } \ | |
160 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
161 data, len, (clss)->class_loader(), thread_type, wait); \ | |
162 } | |
163 #endif /* USDT2 */ | |
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164 |
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165 #else // ndef DTRACE_ENABLED |
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166 |
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167 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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168 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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169 |
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170 #endif // ndef DTRACE_ENABLED |
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171 |
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172 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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173 |
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174 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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175 ClassLoaderData* loader_data, |
8031 | 176 int vtable_len, |
177 int itable_len, | |
178 int static_field_size, | |
179 int nonstatic_oop_map_size, | |
180 ReferenceType rt, | |
181 AccessFlags access_flags, | |
182 Symbol* name, | |
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183 Klass* super_klass, |
8031 | 184 bool is_anonymous, |
185 TRAPS) { | |
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186 |
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187 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 188 access_flags.is_interface(), is_anonymous); |
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189 |
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190 // Allocation |
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191 InstanceKlass* ik; |
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192 if (rt == REF_NONE) { |
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193 if (name == vmSymbols::java_lang_Class()) { |
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194 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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195 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 196 access_flags, is_anonymous); |
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197 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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198 (SystemDictionary::ClassLoader_klass_loaded() && |
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199 super_klass != NULL && |
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200 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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201 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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202 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 203 access_flags, is_anonymous); |
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204 } else { |
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205 // normal class |
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206 ik = new (loader_data, size, THREAD) InstanceKlass( |
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207 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 208 access_flags, is_anonymous); |
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209 } |
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210 } else { |
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211 // reference klass |
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212 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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213 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 214 access_flags, is_anonymous); |
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215 } |
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216 |
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217 // Check for pending exception before adding to the loader data and incrementing |
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218 // class count. Can get OOM here. |
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219 if (HAS_PENDING_EXCEPTION) { |
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220 return NULL; |
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221 } |
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222 |
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223 // Add all classes to our internal class loader list here, |
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224 // including classes in the bootstrap (NULL) class loader. |
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225 loader_data->add_class(ik); |
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226 |
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227 Atomic::inc(&_total_instanceKlass_count); |
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228 return ik; |
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229 } |
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230 |
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231 |
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232 // copy method ordering from resource area to Metaspace |
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233 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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234 if (m != NULL) { |
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235 // allocate a new array and copy contents (memcpy?) |
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236 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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237 for (int i = 0; i < m->length(); i++) { |
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238 _method_ordering->at_put(i, m->at(i)); |
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239 } |
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240 } else { |
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241 _method_ordering = Universe::the_empty_int_array(); |
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242 } |
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243 } |
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244 |
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245 // create a new array of vtable_indices for default methods |
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246 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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247 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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248 assert(default_vtable_indices() == NULL, "only create once"); |
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249 set_default_vtable_indices(vtable_indices); |
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250 return vtable_indices; |
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251 } |
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252 |
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253 InstanceKlass::InstanceKlass(int vtable_len, |
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254 int itable_len, |
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255 int static_field_size, |
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256 int nonstatic_oop_map_size, |
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257 ReferenceType rt, |
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258 AccessFlags access_flags, |
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259 bool is_anonymous) { |
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260 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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261 |
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262 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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263 access_flags.is_interface(), is_anonymous); |
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264 |
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265 set_vtable_length(vtable_len); |
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266 set_itable_length(itable_len); |
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267 set_static_field_size(static_field_size); |
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268 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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269 set_access_flags(access_flags); |
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270 _misc_flags = 0; // initialize to zero |
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271 set_is_anonymous(is_anonymous); |
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272 assert(size() == iksize, "wrong size for object"); |
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273 |
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274 set_array_klasses(NULL); |
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275 set_methods(NULL); |
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276 set_method_ordering(NULL); |
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277 set_default_methods(NULL); |
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278 set_default_vtable_indices(NULL); |
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279 set_local_interfaces(NULL); |
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280 set_transitive_interfaces(NULL); |
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281 init_implementor(); |
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282 set_fields(NULL, 0); |
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283 set_constants(NULL); |
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284 set_class_loader_data(NULL); |
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285 set_source_file_name_index(0); |
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286 set_source_debug_extension(NULL, 0); |
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287 set_array_name(NULL); |
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288 set_inner_classes(NULL); |
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289 set_static_oop_field_count(0); |
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290 set_nonstatic_field_size(0); |
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291 set_is_marked_dependent(false); |
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292 set_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 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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508 "only fully initialized state can have a null lock"); |
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509 return lock; |
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510 } |
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511 |
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512 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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513 // threads to get this lock will see a null lock and will not lock. |
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514 // That's okay because they all check for initialized state after getting |
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515 // the lock and return. |
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516 void InstanceKlass::fence_and_clear_init_lock() { |
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517 // make sure previous stores are all done, notably the init_state. |
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518 OrderAccess::storestore(); |
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519 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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520 assert(!is_not_initialized(), "class must be initialized now"); |
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521 } |
0 | 522 |
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523 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 524 EXCEPTION_MARK; |
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525 oop init_lock = this_oop->init_lock(); |
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526 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 527 |
528 // abort if someone beat us to the initialization | |
529 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
530 | |
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531 ClassState old_state = this_oop->init_state(); |
0 | 532 link_class_impl(this_oop, true, THREAD); |
533 if (HAS_PENDING_EXCEPTION) { | |
534 CLEAR_PENDING_EXCEPTION; | |
535 // Abort if linking the class throws an exception. | |
536 | |
537 // Use a test to avoid redundantly resetting the state if there's | |
538 // no change. Set_init_state() asserts that state changes make | |
539 // progress, whereas here we might just be spinning in place. | |
540 if( old_state != this_oop->_init_state ) | |
541 this_oop->set_init_state (old_state); | |
542 } else { | |
543 // linking successfull, mark class as initialized | |
544 this_oop->set_init_state (fully_initialized); | |
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545 this_oop->fence_and_clear_init_lock(); |
0 | 546 // trace |
547 if (TraceClassInitialization) { | |
548 ResourceMark rm(THREAD); | |
549 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
550 } | |
551 } | |
552 } | |
553 | |
554 | |
555 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
556 // process. The step comments refers to the procedure described in that section. | |
557 // Note: implementation moved to static method to expose the this pointer. | |
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558 void InstanceKlass::initialize(TRAPS) { |
0 | 559 if (this->should_be_initialized()) { |
560 HandleMark hm(THREAD); | |
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561 instanceKlassHandle this_oop(THREAD, this); |
0 | 562 initialize_impl(this_oop, CHECK); |
563 // Note: at this point the class may be initialized | |
564 // OR it may be in the state of being initialized | |
565 // in case of recursive initialization! | |
566 } else { | |
567 assert(is_initialized(), "sanity check"); | |
568 } | |
569 } | |
570 | |
571 | |
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572 bool InstanceKlass::verify_code( |
0 | 573 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
574 // 1) Verify the bytecodes | |
575 Verifier::Mode mode = | |
576 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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577 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 578 } |
579 | |
580 | |
581 // Used exclusively by the shared spaces dump mechanism to prevent | |
582 // classes mapped into the shared regions in new VMs from appearing linked. | |
583 | |
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584 void InstanceKlass::unlink_class() { |
0 | 585 assert(is_linked(), "must be linked"); |
586 _init_state = loaded; | |
587 } | |
588 | |
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589 void InstanceKlass::link_class(TRAPS) { |
0 | 590 assert(is_loaded(), "must be loaded"); |
591 if (!is_linked()) { | |
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592 HandleMark hm(THREAD); |
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593 instanceKlassHandle this_oop(THREAD, this); |
0 | 594 link_class_impl(this_oop, true, CHECK); |
595 } | |
596 } | |
597 | |
598 // Called to verify that a class can link during initialization, without | |
599 // throwing a VerifyError. | |
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600 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 601 assert(is_loaded(), "must be loaded"); |
602 if (!is_linked()) { | |
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603 HandleMark hm(THREAD); |
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604 instanceKlassHandle this_oop(THREAD, this); |
0 | 605 link_class_impl(this_oop, false, CHECK_false); |
606 } | |
607 return is_linked(); | |
608 } | |
609 | |
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610 bool InstanceKlass::link_class_impl( |
0 | 611 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
612 // check for error state | |
613 if (this_oop->is_in_error_state()) { | |
614 ResourceMark rm(THREAD); | |
615 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
616 this_oop->external_name(), false); | |
617 } | |
618 // return if already verified | |
619 if (this_oop->is_linked()) { | |
620 return true; | |
621 } | |
622 | |
623 // Timing | |
624 // timer handles recursion | |
625 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
626 JavaThread* jt = (JavaThread*)THREAD; | |
627 | |
628 // link super class before linking this class | |
629 instanceKlassHandle super(THREAD, this_oop->super()); | |
630 if (super.not_null()) { | |
631 if (super->is_interface()) { // check if super class is an interface | |
632 ResourceMark rm(THREAD); | |
633 Exceptions::fthrow( | |
634 THREAD_AND_LOCATION, | |
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635 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 636 "class %s has interface %s as super class", |
637 this_oop->external_name(), | |
638 super->external_name() | |
639 ); | |
640 return false; | |
641 } | |
642 | |
643 link_class_impl(super, throw_verifyerror, CHECK_false); | |
644 } | |
645 | |
646 // link all interfaces implemented by this class before linking this class | |
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647 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 648 int num_interfaces = interfaces->length(); |
649 for (int index = 0; index < num_interfaces; index++) { | |
650 HandleMark hm(THREAD); | |
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651 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 652 link_class_impl(ih, throw_verifyerror, CHECK_false); |
653 } | |
654 | |
655 // in case the class is linked in the process of linking its superclasses | |
656 if (this_oop->is_linked()) { | |
657 return true; | |
658 } | |
659 | |
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660 // trace only the link time for this klass that includes |
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661 // the verification time |
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662 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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663 ClassLoader::perf_class_link_selftime(), |
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664 ClassLoader::perf_classes_linked(), |
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665 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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666 jt->get_thread_stat()->perf_timers_addr(), |
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667 PerfClassTraceTime::CLASS_LINK); |
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668 |
0 | 669 // verification & rewriting |
670 { | |
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671 oop init_lock = this_oop->init_lock(); |
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672 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 673 // rewritten will have been set if loader constraint error found |
674 // on an earlier link attempt | |
675 // don't verify or rewrite if already rewritten | |
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676 |
0 | 677 if (!this_oop->is_linked()) { |
678 if (!this_oop->is_rewritten()) { | |
679 { | |
680 // Timer includes any side effects of class verification (resolution, | |
681 // etc), but not recursive entry into verify_code(). | |
875
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682 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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683 ClassLoader::perf_class_verify_selftime(), |
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684 ClassLoader::perf_classes_verified(), |
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685 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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686 jt->get_thread_stat()->perf_timers_addr(), |
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687 PerfClassTraceTime::CLASS_VERIFY); |
0 | 688 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
689 if (!verify_ok) { | |
690 return false; | |
691 } | |
692 } | |
693 | |
694 // Just in case a side-effect of verify linked this class already | |
695 // (which can sometimes happen since the verifier loads classes | |
696 // using custom class loaders, which are free to initialize things) | |
697 if (this_oop->is_linked()) { | |
698 return true; | |
699 } | |
700 | |
701 // also sets rewritten | |
702 this_oop->rewrite_class(CHECK_false); | |
703 } | |
704 | |
3748 | 705 // relocate jsrs and link methods after they are all rewritten |
7459
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706 this_oop->link_methods(CHECK_false); |
3748 | 707 |
0 | 708 // Initialize the vtable and interface table after |
709 // methods have been rewritten since rewrite may | |
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710 // fabricate new Method*s. |
0 | 711 // also does loader constraint checking |
712 if (!this_oop()->is_shared()) { | |
713 ResourceMark rm(THREAD); | |
714 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
715 this_oop->itable()->initialize_itable(true, CHECK_false); | |
716 } | |
717 #ifdef ASSERT | |
718 else { | |
719 ResourceMark rm(THREAD); | |
720 this_oop->vtable()->verify(tty, true); | |
721 // In case itable verification is ever added. | |
722 // this_oop->itable()->verify(tty, true); | |
723 } | |
724 #endif | |
725 this_oop->set_init_state(linked); | |
726 if (JvmtiExport::should_post_class_prepare()) { | |
727 Thread *thread = THREAD; | |
728 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
729 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
730 } | |
731 } | |
732 } | |
733 return true; | |
734 } | |
735 | |
736 | |
737 // Rewrite the byte codes of all of the methods of a class. | |
738 // The rewriter must be called exactly once. Rewriting must happen after | |
739 // verification but before the first method of the class is executed. | |
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740 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 741 assert(is_loaded(), "must be loaded"); |
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742 instanceKlassHandle this_oop(THREAD, this); |
0 | 743 if (this_oop->is_rewritten()) { |
744 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
745 return; | |
746 } | |
3748 | 747 Rewriter::rewrite(this_oop, CHECK); |
0 | 748 this_oop->set_rewritten(); |
749 } | |
750 | |
3748 | 751 // Now relocate and link method entry points after class is rewritten. |
752 // This is outside is_rewritten flag. In case of an exception, it can be | |
753 // executed more than once. | |
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754 void InstanceKlass::link_methods(TRAPS) { |
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755 int len = methods()->length(); |
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756 for (int i = len-1; i >= 0; i--) { |
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757 methodHandle m(THREAD, methods()->at(i)); |
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758 |
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759 // Set up method entry points for compiler and interpreter . |
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760 m->link_method(m, CHECK); |
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761 |
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762 // This is for JVMTI and unrelated to relocator but the last thing we do |
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763 #ifdef ASSERT |
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764 if (StressMethodComparator) { |
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765 ResourceMark rm(THREAD); |
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766 static int nmc = 0; |
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767 for (int j = i; j >= 0 && j >= i-4; j--) { |
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768 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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769 bool z = MethodComparator::methods_EMCP(m(), |
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770 methods()->at(j)); |
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771 if (j == i && !z) { |
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772 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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773 assert(z, "method must compare equal to itself"); |
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774 } |
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775 } |
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776 } |
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777 #endif //ASSERT |
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778 } |
3748 | 779 } |
780 | |
0 | 781 |
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782 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 783 // Make sure klass is linked (verified) before initialization |
784 // A class could already be verified, since it has been reflected upon. | |
785 this_oop->link_class(CHECK); | |
786 | |
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787 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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788 |
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789 bool wait = false; |
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790 |
0 | 791 // refer to the JVM book page 47 for description of steps |
792 // Step 1 | |
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793 { |
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794 oop init_lock = this_oop->init_lock(); |
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795 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 796 |
797 Thread *self = THREAD; // it's passed the current thread | |
798 | |
799 // Step 2 | |
800 // If we were to use wait() instead of waitInterruptibly() then | |
801 // we might end up throwing IE from link/symbol resolution sites | |
802 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
803 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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804 wait = true; |
0 | 805 ol.waitUninterruptibly(CHECK); |
806 } | |
807 | |
808 // Step 3 | |
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809 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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810 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 811 return; |
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812 } |
0 | 813 |
814 // Step 4 | |
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815 if (this_oop->is_initialized()) { |
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816 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 817 return; |
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818 } |
0 | 819 |
820 // Step 5 | |
821 if (this_oop->is_in_error_state()) { | |
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822 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 823 ResourceMark rm(THREAD); |
824 const char* desc = "Could not initialize class "; | |
825 const char* className = this_oop->external_name(); | |
826 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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827 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 828 if (NULL == message) { |
829 // Out of memory: can't create detailed error message | |
830 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
831 } else { | |
832 jio_snprintf(message, msglen, "%s%s", desc, className); | |
833 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
834 } | |
835 } | |
836 | |
837 // Step 6 | |
838 this_oop->set_init_state(being_initialized); | |
839 this_oop->set_init_thread(self); | |
840 } | |
841 | |
842 // Step 7 | |
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843 Klass* super_klass = this_oop->super(); |
6983 | 844 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
845 super_klass->initialize(THREAD); | |
0 | 846 |
847 if (HAS_PENDING_EXCEPTION) { | |
848 Handle e(THREAD, PENDING_EXCEPTION); | |
849 CLEAR_PENDING_EXCEPTION; | |
850 { | |
851 EXCEPTION_MARK; | |
852 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
853 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
854 } | |
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855 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 856 THROW_OOP(e()); |
857 } | |
858 } | |
859 | |
6934 | 860 if (this_oop->has_default_methods()) { |
861 // Step 7.5: initialize any interfaces which have default methods | |
862 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
863 Klass* iface = this_oop->local_interfaces()->at(i); | |
864 InstanceKlass* ik = InstanceKlass::cast(iface); | |
865 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
866 ik->initialize(THREAD); | |
867 | |
868 if (HAS_PENDING_EXCEPTION) { | |
869 Handle e(THREAD, PENDING_EXCEPTION); | |
870 CLEAR_PENDING_EXCEPTION; | |
871 { | |
872 EXCEPTION_MARK; | |
873 // Locks object, set state, and notify all waiting threads | |
874 this_oop->set_initialization_state_and_notify( | |
875 initialization_error, THREAD); | |
876 | |
877 // ignore any exception thrown, superclass initialization error is | |
878 // thrown below | |
879 CLEAR_PENDING_EXCEPTION; | |
880 } | |
881 DTRACE_CLASSINIT_PROBE_WAIT( | |
882 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
883 THROW_OOP(e()); | |
884 } | |
885 } | |
886 } | |
887 } | |
888 | |
0 | 889 // Step 8 |
890 { | |
891 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
892 JavaThread* jt = (JavaThread*)THREAD; | |
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893 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 894 // Timer includes any side effects of class initialization (resolution, |
895 // etc), but not recursive entry into call_class_initializer(). | |
875
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896 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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897 ClassLoader::perf_class_init_selftime(), |
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898 ClassLoader::perf_classes_inited(), |
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899 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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900 jt->get_thread_stat()->perf_timers_addr(), |
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901 PerfClassTraceTime::CLASS_CLINIT); |
0 | 902 this_oop->call_class_initializer(THREAD); |
903 } | |
904 | |
905 // Step 9 | |
906 if (!HAS_PENDING_EXCEPTION) { | |
907 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
908 { ResourceMark rm(THREAD); | |
909 debug_only(this_oop->vtable()->verify(tty, true);) | |
910 } | |
911 } | |
912 else { | |
913 // Step 10 and 11 | |
914 Handle e(THREAD, PENDING_EXCEPTION); | |
915 CLEAR_PENDING_EXCEPTION; | |
916 { | |
917 EXCEPTION_MARK; | |
918 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
919 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
920 } | |
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921 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 922 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 923 THROW_OOP(e()); |
924 } else { | |
925 JavaCallArguments args(e); | |
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926 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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927 vmSymbols::throwable_void_signature(), |
0 | 928 &args); |
929 } | |
930 } | |
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931 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 932 } |
933 | |
934 | |
935 // Note: implementation moved to static method to expose the this pointer. | |
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936 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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937 instanceKlassHandle kh(THREAD, this); |
0 | 938 set_initialization_state_and_notify_impl(kh, state, CHECK); |
939 } | |
940 | |
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941 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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942 oop init_lock = this_oop->init_lock(); |
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943 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 944 this_oop->set_init_state(state); |
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945 this_oop->fence_and_clear_init_lock(); |
0 | 946 ol.notify_all(CHECK); |
947 } | |
948 | |
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949 // The embedded _implementor field can only record one implementor. |
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950 // When there are more than one implementors, the _implementor field |
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951 // is set to the interface Klass* itself. Following are the possible |
5998
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952 // values for the _implementor field: |
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953 // NULL - no implementor |
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954 // implementor Klass* - one implementor |
5998
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955 // self - more than one implementor |
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956 // |
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957 // The _implementor field only exists for interfaces. |
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958 void InstanceKlass::add_implementor(Klass* k) { |
0 | 959 assert(Compile_lock->owned_by_self(), ""); |
5998
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960 assert(is_interface(), "not interface"); |
0 | 961 // Filter out my subinterfaces. |
962 // (Note: Interfaces are never on the subklass list.) | |
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963 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 964 |
965 // Filter out subclasses whose supers already implement me. | |
966 // (Note: CHA must walk subclasses of direct implementors | |
967 // in order to locate indirect implementors.) | |
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968 Klass* sk = InstanceKlass::cast(k)->super(); |
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969 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 970 // We only need to check one immediate superclass, since the |
971 // implements_interface query looks at transitive_interfaces. | |
972 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
973 return; | |
974 | |
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975 Klass* ik = implementor(); |
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976 if (ik == NULL) { |
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977 set_implementor(k); |
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978 } else if (ik != this) { |
5998
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979 // There is already an implementor. Use itself as an indicator of |
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980 // more than one implementors. |
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981 set_implementor(this); |
0 | 982 } |
983 | |
984 // The implementor also implements the transitive_interfaces | |
985 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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986 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 987 } |
988 } | |
989 | |
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990 void InstanceKlass::init_implementor() { |
5998
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991 if (is_interface()) { |
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992 set_implementor(NULL); |
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993 } |
0 | 994 } |
995 | |
996 | |
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997 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 998 // link this class into the implementors list of every interface it implements |
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999 Klass* this_as_klass_oop = this; |
0 | 1000 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1001 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1002 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1003 assert(interf->is_interface(), "expected interface"); |
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1004 interf->add_implementor(this_as_klass_oop); |
0 | 1005 } |
1006 } | |
1007 | |
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1008 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1009 if (is_interface()) |
1010 return false; | |
1011 else | |
1012 return Klass::can_be_primary_super_slow(); | |
1013 } | |
1014 | |
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1015 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1016 // The secondaries are the implemented interfaces. |
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1017 InstanceKlass* ik = InstanceKlass::cast(this); |
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1018 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1019 int num_secondaries = num_extra_slots + interfaces->length(); |
1020 if (num_secondaries == 0) { | |
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1021 // Must share this for correct bootstrapping! |
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1022 set_secondary_supers(Universe::the_empty_klass_array()); |
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1023 return NULL; |
0 | 1024 } else if (num_extra_slots == 0) { |
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1025 // The secondary super list is exactly the same as the transitive interfaces. |
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1026 // Redefine classes has to be careful not to delete this! |
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1027 set_secondary_supers(interfaces); |
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1028 return NULL; |
0 | 1029 } else { |
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1030 // Copy transitive interfaces to a temporary growable array to be constructed |
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1031 // into the secondary super list with extra slots. |
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1032 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1033 for (int i = 0; i < interfaces->length(); i++) { |
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1034 secondaries->push(interfaces->at(i)); |
0 | 1035 } |
1036 return secondaries; | |
1037 } | |
1038 } | |
1039 | |
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1040 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1041 if (k->is_interface()) { |
0 | 1042 return implements_interface(k); |
1043 } else { | |
1044 return Klass::compute_is_subtype_of(k); | |
1045 } | |
1046 } | |
1047 | |
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1048 bool InstanceKlass::implements_interface(Klass* k) const { |
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1049 if (this == k) return true; |
6983 | 1050 assert(k->is_interface(), "should be an interface class"); |
0 | 1051 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1052 if (transitive_interfaces()->at(i) == k) { |
0 | 1053 return true; |
1054 } | |
1055 } | |
1056 return false; | |
1057 } | |
1058 | |
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1059 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1060 // Verify direct super interface |
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1061 if (this == k) return true; |
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1062 assert(k->is_interface(), "should be an interface class"); |
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1063 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1064 if (local_interfaces()->at(i) == k) { |
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1065 return true; |
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1066 } |
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1067 } |
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1068 return false; |
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1069 } |
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1070 |
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1071 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1072 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1073 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1074 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1075 JvmtiExport::post_array_size_exhausted(); |
0 | 1076 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1077 } | |
1078 int size = objArrayOopDesc::object_size(length); | |
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1079 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1080 KlassHandle h_ak (THREAD, ak); |
1081 objArrayOop o = | |
1082 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1083 return o; | |
1084 } | |
1085 | |
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1086 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1087 if (TraceFinalizerRegistration) { |
1088 tty->print("Registered "); | |
1089 i->print_value_on(tty); | |
1090 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1091 } | |
1092 instanceHandle h_i(THREAD, i); | |
1093 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1094 JavaValue result(T_VOID); | |
1095 JavaCallArguments args(h_i); | |
1096 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1097 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1098 return h_i(); | |
1099 } | |
1100 | |
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1101 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1102 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1103 int size = size_helper(); // Query before forming handle. | |
1104 | |
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1105 KlassHandle h_k(THREAD, this); |
0 | 1106 |
1107 instanceOop i; | |
1108 | |
1109 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1110 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1111 i = register_finalizer(i, CHECK_NULL); | |
1112 } | |
1113 return i; | |
1114 } | |
1115 | |
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1116 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1117 if (is_interface() || is_abstract()) { |
1118 ResourceMark rm(THREAD); | |
1119 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1120 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1121 } | |
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1122 if (this == SystemDictionary::Class_klass()) { |
0 | 1123 ResourceMark rm(THREAD); |
1124 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1125 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1126 } | |
1127 } | |
1128 | |
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1129 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1130 instanceKlassHandle this_oop(THREAD, this); |
0 | 1131 return array_klass_impl(this_oop, or_null, n, THREAD); |
1132 } | |
1133 | |
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1134 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1135 if (this_oop->array_klasses() == NULL) { |
1136 if (or_null) return NULL; | |
1137 | |
1138 ResourceMark rm; | |
1139 JavaThread *jt = (JavaThread *)THREAD; | |
1140 { | |
1141 // Atomic creation of array_klasses | |
1142 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1143 MutexLocker ma(MultiArray_lock, THREAD); | |
1144 | |
1145 // Check if update has already taken place | |
1146 if (this_oop->array_klasses() == NULL) { | |
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1147 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1148 this_oop->set_array_klasses(k); |
1149 } | |
1150 } | |
1151 } | |
1152 // _this will always be set at this point | |
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1153 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1154 if (or_null) { |
1155 return oak->array_klass_or_null(n); | |
1156 } | |
1157 return oak->array_klass(n, CHECK_NULL); | |
1158 } | |
1159 | |
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1160 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1161 return array_klass_impl(or_null, 1, THREAD); |
1162 } | |
1163 | |
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1164 void InstanceKlass::call_class_initializer(TRAPS) { |
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1165 instanceKlassHandle ik (THREAD, this); |
0 | 1166 call_class_initializer_impl(ik, THREAD); |
1167 } | |
1168 | |
1169 static int call_class_initializer_impl_counter = 0; // for debugging | |
1170 | |
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1171 Method* InstanceKlass::class_initializer() { |
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1172 Method* clinit = find_method( |
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1173 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1174 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1175 return clinit; |
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1176 } |
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1177 return NULL; |
0 | 1178 } |
1179 | |
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1180 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
6972
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1181 if (ReplayCompiles && |
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1182 (ReplaySuppressInitializers == 1 || |
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1183 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1184 // Hide the existence of the initializer for the purpose of replaying the compile |
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1185 return; |
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1186 } |
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1187 |
0 | 1188 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1189 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1190 if (TraceClassInitialization) { | |
1191 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1192 this_oop->name()->print_value(); | |
1193 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1194 } | |
1195 if (h_method() != NULL) { | |
1196 JavaCallArguments args; // No arguments | |
1197 JavaValue result(T_VOID); | |
1198 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1199 } | |
1200 } | |
1201 | |
1202 | |
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1203 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1204 InterpreterOopMap* entry_for) { |
1205 // Dirty read, then double-check under a lock. | |
1206 if (_oop_map_cache == NULL) { | |
1207 // Otherwise, allocate a new one. | |
1208 MutexLocker x(OopMapCacheAlloc_lock); | |
1209 // First time use. Allocate a cache in C heap | |
1210 if (_oop_map_cache == NULL) { | |
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1211 // Release stores from OopMapCache constructor before assignment |
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1212 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1213 // required memory barrier only because of the volatile |
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1214 // qualifier of _oop_map_cache. |
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1215 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1216 } |
1217 } | |
1218 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1219 _oop_map_cache->lookup(method, bci, entry_for); | |
1220 } | |
1221 | |
1222 | |
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1223 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1224 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1225 Symbol* f_name = fs.name(); |
1226 Symbol* f_sig = fs.signature(); | |
0 | 1227 if (f_name == name && f_sig == sig) { |
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1228 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1229 return true; |
1230 } | |
1231 } | |
1232 return false; | |
1233 } | |
1234 | |
1235 | |
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1236 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1237 const int n = local_interfaces()->length(); |
1238 for (int i = 0; i < n; i++) { | |
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1239 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1240 assert(intf1->is_interface(), "just checking type"); |
0 | 1241 // search for field in current interface |
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1242 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1243 assert(fd->is_static(), "interface field must be static"); |
1244 return intf1; | |
1245 } | |
1246 // search for field in direct superinterfaces | |
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1247 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1248 if (intf2 != NULL) return intf2; |
1249 } | |
1250 // otherwise field lookup fails | |
1251 return NULL; | |
1252 } | |
1253 | |
1254 | |
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1255 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1256 // search order according to newest JVM spec (5.4.3.2, p.167). |
1257 // 1) search for field in current klass | |
1258 if (find_local_field(name, sig, fd)) { | |
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1259 return const_cast<InstanceKlass*>(this); |
0 | 1260 } |
1261 // 2) search for field recursively in direct superinterfaces | |
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1262 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1263 if (intf != NULL) return intf; |
1264 } | |
1265 // 3) apply field lookup recursively if superclass exists | |
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1266 { Klass* supr = super(); |
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1267 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1268 } |
1269 // 4) otherwise field lookup fails | |
1270 return NULL; | |
1271 } | |
1272 | |
1273 | |
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1274 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1275 // search order according to newest JVM spec (5.4.3.2, p.167). |
1276 // 1) search for field in current klass | |
1277 if (find_local_field(name, sig, fd)) { | |
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1278 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1279 } |
1280 // 2) search for field recursively in direct superinterfaces | |
1281 if (is_static) { | |
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1282 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1283 if (intf != NULL) return intf; |
1284 } | |
1285 // 3) apply field lookup recursively if superclass exists | |
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1286 { Klass* supr = super(); |
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1287 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1288 } |
1289 // 4) otherwise field lookup fails | |
1290 return NULL; | |
1291 } | |
1292 | |
1293 | |
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1294 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1295 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1296 if (fs.offset() == offset) { |
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1297 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1298 if (fd->is_static() == is_static) return true; |
1299 } | |
1300 } | |
1301 return false; | |
1302 } | |
1303 | |
1304 | |
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1305 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1306 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1307 while (klass != NULL) { |
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1308 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1309 return true; |
1310 } | |
6983 | 1311 klass = klass->super(); |
0 | 1312 } |
1313 return false; | |
1314 } | |
1315 | |
1316 | |
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1317 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1318 int len = methods()->length(); |
1319 for (int index = 0; index < len; index++) { | |
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1320 Method* m = methods()->at(index); |
0 | 1321 assert(m->is_method(), "must be method"); |
1322 f(m); | |
1323 } | |
1324 } | |
1325 | |
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1326 |
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1327 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1328 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1329 if (fs.access_flags().is_static()) { | |
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1330 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1331 cl->do_field(&fd); |
1332 } | |
0 | 1333 } |
1334 } | |
1335 | |
1336 | |
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1337 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1338 instanceKlassHandle h_this(THREAD, this); |
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1339 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1340 } |
1341 | |
1342 | |
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1343 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1344 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1345 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1346 if (fs.access_flags().is_static()) { |
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1347 fieldDescriptor& fd = fs.field_descriptor(); |
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1348 f(&fd, mirror, CHECK); |
3938 | 1349 } |
0 | 1350 } |
1351 } | |
1352 | |
1353 | |
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1354 static int compare_fields_by_offset(int* a, int* b) { |
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1355 return a[0] - b[0]; |
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1356 } |
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1357 |
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1358 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1359 InstanceKlass* super = superklass(); |
0 | 1360 if (super != NULL) { |
1361 super->do_nonstatic_fields(cl); | |
1362 } | |
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1363 fieldDescriptor fd; |
3938 | 1364 int length = java_fields_count(); |
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1365 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1366 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1367 int j = 0; |
3938 | 1368 for (int i = 0; i < length; i += 1) { |
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1369 fd.reinitialize(this, i); |
44
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1370 if (!fd.is_static()) { |
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1371 fields_sorted[j + 0] = fd.offset(); |
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1372 fields_sorted[j + 1] = i; |
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1373 j += 2; |
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1374 } |
0 | 1375 } |
44
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1376 if (j > 0) { |
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1377 length = j; |
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1378 // _sort_Fn is defined in growableArray.hpp. |
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1379 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1380 for (int i = 0; i < length; i += 2) { |
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1381 fd.reinitialize(this, fields_sorted[i + 1]); |
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1382 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1383 cl->do_field(&fd); |
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1384 } |
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1385 } |
6197 | 1386 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1387 } |
1388 | |
1389 | |
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1390 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1391 if (array_klasses() != NULL) |
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1392 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1393 } |
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1394 |
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1395 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1396 if (array_klasses() != NULL) |
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1397 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1398 } |
1399 | |
1400 #ifdef ASSERT | |
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1401 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1402 int len = methods->length(); |
1403 for (int index = 0; index < len; index++) { | |
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1404 Method* m = methods->at(index); |
0 | 1405 assert(m->is_method(), "must be method"); |
1406 if (m->signature() == signature && m->name() == name) { | |
1407 return index; | |
1408 } | |
1409 } | |
1410 return -1; | |
1411 } | |
1412 #endif | |
1413 | |
6934 | 1414 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1415 int len = methods->length(); |
1416 // methods are sorted, so do binary search | |
1417 int l = 0; | |
1418 int h = len - 1; | |
1419 while (l <= h) { | |
1420 int mid = (l + h) >> 1; | |
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1421 Method* m = methods->at(mid); |
0 | 1422 assert(m->is_method(), "must be method"); |
1423 int res = m->name()->fast_compare(name); | |
1424 if (res == 0) { | |
6934 | 1425 return mid; |
0 | 1426 } else if (res < 0) { |
1427 l = mid + 1; | |
1428 } else { | |
1429 h = mid - 1; | |
1430 } | |
1431 } | |
6934 | 1432 return -1; |
1433 } | |
1434 | |
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1435 // find_method looks up the name/signature in the local methods array |
6934 | 1436 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1437 return find_method_impl(name, signature, false); |
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1438 } |
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1439 |
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1440 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
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1441 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass); |
6934 | 1442 } |
1443 | |
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1444 // find_instance_method looks up the name/signature in the local methods array |
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1445 // and skips over static methods |
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1446 Method* InstanceKlass::find_instance_method( |
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1447 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1448 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1449 if (meth != NULL && meth->is_static()) { |
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1450 meth = NULL; |
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1451 } |
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1452 return meth; |
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|
1453 } |
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|
1454 |
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1455 // find_method looks up the name/signature in the local methods array |
6934 | 1456 Method* InstanceKlass::find_method( |
1457 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1458 return InstanceKlass::find_method_impl(methods, name, signature, false); |
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1459 } |
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1460 |
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1461 Method* InstanceKlass::find_method_impl( |
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1462 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
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1463 int hit = find_method_index(methods, name, signature, skipping_overpass); |
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1464 return hit >= 0 ? methods->at(hit): NULL; |
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1465 } |
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1466 |
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1467 // Used directly for default_methods to find the index into the |
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1468 // default_vtable_indices, and indirectly by find_method |
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1469 // find_method_index looks in the local methods array to return the index |
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1470 // of the matching name/signature. If, overpass methods are being ignored, |
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1471 // the search continues to find a potential non-overpass match. This capability |
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1472 // is important during method resolution to prefer a static method, for example, |
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1473 // over an overpass method. |
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1474 int InstanceKlass::find_method_index( |
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1475 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass) { |
6934 | 1476 int hit = binary_search(methods, name); |
1477 if (hit != -1) { | |
1478 Method* m = methods->at(hit); | |
1479 // Do linear search to find matching signature. First, quick check | |
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1480 // for common case, ignoring overpasses if requested. |
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1481 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return hit; |
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1482 |
6934 | 1483 // search downwards through overloaded methods |
1484 int i; | |
1485 for (i = hit - 1; i >= 0; --i) { | |
1486 Method* m = methods->at(i); | |
1487 assert(m->is_method(), "must be method"); | |
1488 if (m->name() != name) break; | |
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1489 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1490 } |
1491 // search upwards | |
1492 for (i = hit + 1; i < methods->length(); ++i) { | |
1493 Method* m = methods->at(i); | |
1494 assert(m->is_method(), "must be method"); | |
1495 if (m->name() != name) break; | |
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1496 if ((m->signature() == signature) && (!skipping_overpass || !m->is_overpass())) return i; |
6934 | 1497 } |
1498 // not found | |
0 | 1499 #ifdef ASSERT |
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1500 int index = skipping_overpass ? -1 : linear_search(methods, name, signature); |
6934 | 1501 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1502 #endif |
6934 | 1503 } |
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1504 return -1; |
0 | 1505 } |
6934 | 1506 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1507 return find_method_by_name(methods(), name, end); | |
1508 } | |
1509 | |
1510 int InstanceKlass::find_method_by_name( | |
1511 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1512 assert(end_ptr != NULL, "just checking"); | |
1513 int start = binary_search(methods, name); | |
1514 int end = start + 1; | |
1515 if (start != -1) { | |
1516 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1517 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1518 *end_ptr = end; | |
1519 return start; | |
1520 } | |
1521 return -1; | |
1522 } | |
1523 | |
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1524 // uncached_lookup_method searches both the local class methods array and all |
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1525 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1526 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1527 MethodLookupMode lookup_mode = mode; |
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1528 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1529 while (klass != NULL) { |
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1530 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1531 if (method != NULL) { |
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1532 return method; |
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1533 } |
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1534 klass = InstanceKlass::cast(klass)->super(); |
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1535 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1536 } |
1537 return NULL; | |
1538 } | |
1539 | |
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1540 // lookup a method in the default methods list then in all transitive interfaces |
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1541 // Do NOT return private or static methods |
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1542 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1543 Symbol* signature) const { |
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|
1544 Method* m = NULL; |
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1545 if (default_methods() != NULL) { |
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1546 m = find_method(default_methods(), name, signature); |
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|
1547 } |
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|
1548 // Look up interfaces |
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1549 if (m == NULL) { |
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1550 m = lookup_method_in_all_interfaces(name, signature, normal); |
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1551 } |
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|
1552 return m; |
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|
1553 } |
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1554 |
0 | 1555 // lookup a method in all the interfaces that this class implements |
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|
1556 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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|
1557 // They should only be found in the initial InterfaceMethodRef |
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1558 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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|
1559 Symbol* signature, |
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|
1560 MethodLookupMode mode) const { |
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1561 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1562 int num_ifs = all_ifs->length(); |
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1563 InstanceKlass *ik = NULL; |
0 | 1564 for (int i = 0; i < num_ifs; i++) { |
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1565 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1566 Method* m = ik->lookup_method(name, signature); |
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1567 if (m != NULL && m->is_public() && !m->is_static() && |
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1568 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1569 return m; |
1570 } | |
1571 } | |
1572 return NULL; | |
1573 } | |
1574 | |
1575 /* jni_id_for_impl for jfieldIds only */ | |
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1576 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1577 MutexLocker ml(JfieldIdCreation_lock); |
1578 // Retry lookup after we got the lock | |
1579 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1580 if (probe == NULL) { | |
1581 // Slow case, allocate new static field identifier | |
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1582 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1583 this_oop->set_jni_ids(probe); |
1584 } | |
1585 return probe; | |
1586 } | |
1587 | |
1588 | |
1589 /* jni_id_for for jfieldIds only */ | |
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1590 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1591 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1592 if (probe == NULL) { | |
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1593 probe = jni_id_for_impl(this, offset); |
0 | 1594 } |
1595 return probe; | |
1596 } | |
1597 | |
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1598 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1599 Array<jushort>* inner_class_list = inner_classes(); |
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1600 if (inner_class_list == NULL) { |
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1601 return 0; |
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|
1602 } |
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|
1603 int length = inner_class_list->length(); |
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|
1604 if (length % inner_class_next_offset == 0) { |
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|
1605 return 0; |
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|
1606 } else { |
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|
1607 int index = length - enclosing_method_attribute_size; |
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1608 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1609 return inner_class_list->at(index + offset); |
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1610 } |
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1611 } |
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1612 |
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1613 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1614 u2 method_index) { |
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1615 Array<jushort>* inner_class_list = inner_classes(); |
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1616 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1617 int length = inner_class_list->length(); |
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1618 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1619 int index = length - enclosing_method_attribute_size; |
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1620 inner_class_list->at_put( |
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1621 index + enclosing_method_class_index_offset, class_index); |
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1622 inner_class_list->at_put( |
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1623 index + enclosing_method_method_index_offset, method_index); |
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1624 } |
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1625 } |
0 | 1626 |
1627 // Lookup or create a jmethodID. | |
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1628 // This code is called by the VMThread and JavaThreads so the |
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1629 // locking has to be done very carefully to avoid deadlocks |
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1630 // and/or other cache consistency problems. |
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1631 // |
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1632 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1633 size_t idnum = (size_t)method_h->method_idnum(); |
1634 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1635 size_t length = 0; | |
1636 jmethodID id = NULL; | |
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1637 |
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1638 // We use a double-check locking idiom here because this cache is |
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1639 // performance sensitive. In the normal system, this cache only |
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1640 // transitions from NULL to non-NULL which is safe because we use |
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1641 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1642 // A partially constructed cache should never be seen by a racing |
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1643 // thread. We also use release_store_ptr() to save a new jmethodID |
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1644 // in the cache so a partially constructed jmethodID should never be |
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1645 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1646 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1647 // creation of the cache itself requires no leaks so a lock is |
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1648 // generally acquired in those two cases. |
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1649 // |
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1650 // If the RedefineClasses() API has been used, then this cache can |
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1651 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1652 // Cache creation requires no leaks and we require safety between all |
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1653 // cache accesses and freeing of the old cache so a lock is generally |
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1654 // acquired when the RedefineClasses() API has been used. |
0 | 1655 |
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1656 if (jmeths != NULL) { |
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1657 // the cache already exists |
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1658 if (!ik_h->idnum_can_increment()) { |
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1659 // the cache can't grow so we can just get the current values |
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1660 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1661 } else { |
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1662 // cache can grow so we have to be more careful |
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1663 if (Threads::number_of_threads() == 0 || |
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1664 SafepointSynchronize::is_at_safepoint()) { |
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1665 // we're single threaded or at a safepoint - no locking needed |
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1666 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1667 } else { |
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1668 MutexLocker ml(JmethodIdCreation_lock); |
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1669 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1670 } |
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1671 } |
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1672 } |
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1673 // implied else: |
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1674 // we need to allocate a cache so default length and id values are good |
0 | 1675 |
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1676 if (jmeths == NULL || // no cache yet |
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1677 length <= idnum || // cache is too short |
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1678 id == NULL) { // cache doesn't contain entry |
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1679 |
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1680 // This function can be called by the VMThread so we have to do all |
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1681 // things that might block on a safepoint before grabbing the lock. |
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1682 // Otherwise, we can deadlock with the VMThread or have a cache |
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1683 // consistency issue. These vars keep track of what we might have |
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1684 // to free after the lock is dropped. |
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1685 jmethodID to_dealloc_id = NULL; |
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1686 jmethodID* to_dealloc_jmeths = NULL; |
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1687 |
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1688 // may not allocate new_jmeths or use it if we allocate it |
0 | 1689 jmethodID* new_jmeths = NULL; |
1690 if (length <= idnum) { | |
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1691 // allocate a new cache that might be used |
0 | 1692 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1693 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1694 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
977
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1695 // cache size is stored in element[0], other elements offset by one |
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1696 new_jmeths[0] = (jmethodID)size; |
0 | 1697 } |
1698 | |
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1699 // allocate a new jmethodID that might be used |
0 | 1700 jmethodID new_id = NULL; |
1701 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1702 // The method passed in is old (but not obsolete), we need to use the current version | |
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1703 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1704 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1705 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1706 } else { |
1707 // It is the current version of the method or an obsolete method, | |
1708 // use the version passed in | |
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1709 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1710 } |
1711 | |
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1712 if (Threads::number_of_threads() == 0 || |
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1713 SafepointSynchronize::is_at_safepoint()) { |
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1714 // we're single threaded or at a safepoint - no locking needed |
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1715 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1716 &to_dealloc_id, &to_dealloc_jmeths); |
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1717 } else { |
0 | 1718 MutexLocker ml(JmethodIdCreation_lock); |
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1719 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1720 &to_dealloc_id, &to_dealloc_jmeths); |
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1721 } |
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1722 |
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1723 // The lock has been dropped so we can free resources. |
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1724 // Free up either the old cache or the new cache if we allocated one. |
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1725 if (to_dealloc_jmeths != NULL) { |
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1726 FreeHeap(to_dealloc_jmeths); |
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1727 } |
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1728 // free up the new ID since it wasn't needed |
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1729 if (to_dealloc_id != NULL) { |
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1730 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1731 } |
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1732 } |
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1733 return id; |
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1734 } |
0 | 1735 |
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1736 |
977
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1737 // Common code to fetch the jmethodID from the cache or update the |
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1738 // cache with the new jmethodID. This function should never do anything |
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1739 // that causes the caller to go to a safepoint or we can deadlock with |
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1740 // the VMThread or have cache consistency issues. |
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1741 // |
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1742 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1743 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1744 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1745 jmethodID** to_dealloc_jmeths_p) { |
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1746 assert(new_id != NULL, "sanity check"); |
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1747 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1748 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1749 assert(Threads::number_of_threads() == 0 || |
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1750 SafepointSynchronize::is_at_safepoint() || |
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1751 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1752 |
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1753 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1754 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1755 jmethodID id = NULL; |
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1756 size_t length = 0; |
0 | 1757 |
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1758 if (jmeths == NULL || // no cache yet |
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1759 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1760 if (jmeths != NULL) { |
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1761 // copy any existing entries from the old cache |
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1762 for (size_t index = 0; index < length; index++) { |
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1763 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1764 } |
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1765 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1766 } |
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1767 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1768 } else { |
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1769 // fetch jmethodID (if any) from the existing cache |
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1770 id = jmeths[idnum+1]; |
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1771 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1772 } |
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1773 if (id == NULL) { |
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1774 // No matching jmethodID in the existing cache or we have a new |
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1775 // cache or we just grew the cache. This cache write is done here |
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1776 // by the first thread to win the foot race because a jmethodID |
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1777 // needs to be unique once it is generally available. |
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1778 id = new_id; |
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1779 |
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1780 // The jmethodID cache can be read while unlocked so we have to |
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1781 // make sure the new jmethodID is complete before installing it |
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1782 // in the cache. |
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1783 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1784 } else { |
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1785 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1786 } |
1787 return id; | |
1788 } | |
1789 | |
1790 | |
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1791 // Common code to get the jmethodID cache length and the jmethodID |
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1792 // value at index idnum if there is one. |
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1793 // |
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1794 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1795 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1796 assert(cache != NULL, "sanity check"); |
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1797 assert(length_p != NULL, "sanity check"); |
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1798 assert(id_p != NULL, "sanity check"); |
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1799 |
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1800 // cache size is stored in element[0], other elements offset by one |
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1801 *length_p = (size_t)cache[0]; |
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1802 if (*length_p <= idnum) { // cache is too short |
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1803 *id_p = NULL; |
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1804 } else { |
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1805 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1806 } |
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1807 } |
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1808 |
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1809 |
0 | 1810 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1811 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1812 size_t idnum = (size_t)method->method_idnum(); |
1813 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1814 size_t length; // length assigned as debugging crumb | |
1815 jmethodID id = NULL; | |
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1816 if (jmeths != NULL && // If there is a cache |
0 | 1817 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1818 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1819 } | |
1820 return id; | |
1821 } | |
1822 | |
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1823 int nmethodBucket::decrement() { |
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1824 return Atomic::add(-1, (volatile int *)&_count); |
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1825 } |
0 | 1826 |
1827 // | |
1828 // Walk the list of dependent nmethods searching for nmethods which | |
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1829 // are dependent on the changes that were passed in and mark them for |
0 | 1830 // deoptimization. Returns the number of nmethods found. |
1831 // | |
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1832 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1833 assert_locked_or_safepoint(CodeCache_lock); |
1834 int found = 0; | |
1835 nmethodBucket* b = _dependencies; | |
1836 while (b != NULL) { | |
1837 nmethod* nm = b->get_nmethod(); | |
1838 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1839 // the dependency list may contain nmethods which aren't alive. | |
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1840 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1841 if (TraceDependencies) { |
1842 ResourceMark rm; | |
1843 tty->print_cr("Marked for deoptimization"); | |
1844 tty->print_cr(" context = %s", this->external_name()); | |
1845 changes.print(); | |
1846 nm->print(); | |
1847 nm->print_dependencies(); | |
1848 } | |
1849 nm->mark_for_deoptimization(); | |
1850 found++; | |
1851 } | |
1852 b = b->next(); | |
1853 } | |
1854 return found; | |
1855 } | |
1856 | |
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1857 void InstanceKlass::clean_dependent_nmethods() { |
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1858 assert_locked_or_safepoint(CodeCache_lock); |
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1859 |
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1860 if (has_unloaded_dependent()) { |
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1861 nmethodBucket* b = _dependencies; |
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1862 nmethodBucket* last = NULL; |
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1863 while (b != NULL) { |
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1864 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1865 |
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1866 nmethodBucket* next = b->next(); |
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1867 |
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1868 if (b->count() == 0) { |
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1869 if (last == NULL) { |
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1870 _dependencies = next; |
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1871 } else { |
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1872 last->set_next(next); |
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1873 } |
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1874 delete b; |
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1875 // last stays the same. |
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1876 } else { |
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1877 last = b; |
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1878 } |
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1879 |
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1880 b = next; |
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1881 } |
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1882 set_has_unloaded_dependent(false); |
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1883 } |
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1884 #ifdef ASSERT |
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1885 else { |
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1886 // Verification |
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1887 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1888 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1889 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1890 } |
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1891 } |
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1892 #endif |
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1893 } |
0 | 1894 |
1895 // | |
1896 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1897 // It's possible that an nmethod has multiple dependencies on this klass | |
1898 // so a count is kept for each bucket to guarantee that creation and | |
1899 // deletion of dependencies is consistent. | |
1900 // | |
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1901 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1902 assert_locked_or_safepoint(CodeCache_lock); |
1903 nmethodBucket* b = _dependencies; | |
1904 nmethodBucket* last = NULL; | |
1905 while (b != NULL) { | |
1906 if (nm == b->get_nmethod()) { | |
1907 b->increment(); | |
1908 return; | |
1909 } | |
1910 b = b->next(); | |
1911 } | |
1912 _dependencies = new nmethodBucket(nm, _dependencies); | |
1913 } | |
1914 | |
1915 | |
1916 // | |
1917 // Decrement count of the nmethod in the dependency list and remove | |
1918 // the bucket competely when the count goes to 0. This method must | |
1919 // find a corresponding bucket otherwise there's a bug in the | |
1920 // recording of dependecies. | |
1921 // | |
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1922 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1923 assert_locked_or_safepoint(CodeCache_lock); |
1924 nmethodBucket* b = _dependencies; | |
1925 nmethodBucket* last = NULL; | |
1926 while (b != NULL) { | |
1927 if (nm == b->get_nmethod()) { | |
20278
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1928 int val = b->decrement(); |
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1929 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1930 if (val == 0) { |
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1931 set_has_unloaded_dependent(true); |
0 | 1932 } |
1933 return; | |
1934 } | |
1935 last = b; | |
1936 b = b->next(); | |
1937 } | |
1938 #ifdef ASSERT | |
1939 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1940 nm->print(); | |
1941 #endif // ASSERT | |
1942 ShouldNotReachHere(); | |
1943 } | |
1944 | |
1945 | |
1946 #ifndef PRODUCT | |
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1947 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1948 nmethodBucket* b = _dependencies; |
1949 int idx = 0; | |
1950 while (b != NULL) { | |
1951 nmethod* nm = b->get_nmethod(); | |
1952 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1953 if (!verbose) { | |
1954 nm->print_on(tty, "nmethod"); | |
1955 tty->print_cr(" } "); | |
1956 } else { | |
1957 nm->print(); | |
1958 nm->print_dependencies(); | |
1959 tty->print_cr("--- } "); | |
1960 } | |
1961 b = b->next(); | |
1962 } | |
1963 } | |
1964 | |
1965 | |
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1966 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1967 nmethodBucket* b = _dependencies; |
1968 while (b != NULL) { | |
1969 if (nm == b->get_nmethod()) { | |
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1970 #ifdef ASSERT |
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1971 int count = b->count(); |
20279 | 1972 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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1973 #endif |
0 | 1974 return true; |
1975 } | |
1976 b = b->next(); | |
1977 } | |
1978 return false; | |
1979 } | |
1980 #endif //PRODUCT | |
1981 | |
1982 | |
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1983 // Garbage collection |
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1984 |
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1985 #ifdef ASSERT |
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1986 template <class T> void assert_is_in(T *p) { |
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1987 T heap_oop = oopDesc::load_heap_oop(p); |
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1988 if (!oopDesc::is_null(heap_oop)) { |
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1989 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1990 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1991 } |
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1992 } |
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1993 template <class T> void assert_is_in_closed_subset(T *p) { |
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1994 T heap_oop = oopDesc::load_heap_oop(p); |
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1995 if (!oopDesc::is_null(heap_oop)) { |
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1996 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1997 assert(Universe::heap()->is_in_closed_subset(o), |
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1998 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
113
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1999 } |
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2000 } |
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2001 template <class T> void assert_is_in_reserved(T *p) { |
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2002 T heap_oop = oopDesc::load_heap_oop(p); |
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2003 if (!oopDesc::is_null(heap_oop)) { |
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2004 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2005 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2006 } |
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2007 } |
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2008 template <class T> void assert_nothing(T *p) {} |
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2009 |
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2010 #else |
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2011 template <class T> void assert_is_in(T *p) {} |
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2012 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2013 template <class T> void assert_is_in_reserved(T *p) {} |
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2014 template <class T> void assert_nothing(T *p) {} |
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2015 #endif // ASSERT |
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2016 |
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2017 // |
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2018 // Macros that iterate over areas of oops which are specialized on type of |
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2019 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2020 // |
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2021 // Parameters are: |
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2022 // T - type of oop to point to (either oop or narrowOop) |
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2023 // start_p - starting pointer for region to iterate over |
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2024 // count - number of oops or narrowOops to iterate over |
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2025 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2026 // makes it more efficient to put in a macro rather than making |
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2027 // it a template function) |
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2028 // assert_fn - assert function which is template function because performance |
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2029 // doesn't matter when enabled. |
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2030 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2031 T, start_p, count, do_oop, \ |
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2032 assert_fn) \ |
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2033 { \ |
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2034 T* p = (T*)(start_p); \ |
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2035 T* const end = p + (count); \ |
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2036 while (p < end) { \ |
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2037 (assert_fn)(p); \ |
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2038 do_oop; \ |
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2039 ++p; \ |
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2040 } \ |
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2041 } |
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2042 |
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2043 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2044 T, start_p, count, do_oop, \ |
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2045 assert_fn) \ |
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2046 { \ |
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2047 T* const start = (T*)(start_p); \ |
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2048 T* p = start + (count); \ |
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2049 while (start < p) { \ |
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2050 --p; \ |
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2051 (assert_fn)(p); \ |
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2052 do_oop; \ |
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2053 } \ |
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2054 } |
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2055 |
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2056 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2057 T, start_p, count, low, high, \ |
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2058 do_oop, assert_fn) \ |
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2059 { \ |
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2060 T* const l = (T*)(low); \ |
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2061 T* const h = (T*)(high); \ |
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2062 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2063 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2064 "bounded region must be properly aligned"); \ |
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2065 T* p = (T*)(start_p); \ |
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2066 T* end = p + (count); \ |
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2067 if (p < l) p = l; \ |
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2068 if (end > h) end = h; \ |
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2069 while (p < end) { \ |
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2070 (assert_fn)(p); \ |
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2071 do_oop; \ |
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2072 ++p; \ |
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2073 } \ |
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2074 } |
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2075 |
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2076 |
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2077 // The following macros call specialized macros, passing either oop or |
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2078 // narrowOop as the specialization type. These test the UseCompressedOops |
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2079 // flag. |
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2080 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2081 { \ |
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2082 /* Compute oopmap block range. The common case \ |
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2083 is nonstatic_oop_map_size == 1. */ \ |
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2084 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2085 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2086 if (UseCompressedOops) { \ |
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2087 while (map < end_map) { \ |
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2088 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2089 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2090 do_oop, assert_fn) \ |
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2091 ++map; \ |
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2092 } \ |
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2093 } else { \ |
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2094 while (map < end_map) { \ |
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2095 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2096 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2097 do_oop, assert_fn) \ |
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2098 ++map; \ |
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2099 } \ |
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2100 } \ |
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2101 } |
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2102 |
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2103 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2104 { \ |
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2105 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2106 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2107 if (UseCompressedOops) { \ |
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2108 while (start_map < map) { \ |
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2109 --map; \ |
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2110 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2111 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2112 do_oop, assert_fn) \ |
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2113 } \ |
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2114 } else { \ |
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2115 while (start_map < map) { \ |
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2116 --map; \ |
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2117 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2118 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2119 do_oop, assert_fn) \ |
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2120 } \ |
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2121 } \ |
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2122 } |
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2123 |
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2124 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2125 assert_fn) \ |
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2126 { \ |
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2127 /* Compute oopmap block range. The common case is \ |
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2128 nonstatic_oop_map_size == 1, so we accept the \ |
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2129 usually non-existent extra overhead of examining \ |
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2130 all the maps. */ \ |
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2131 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2132 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2133 if (UseCompressedOops) { \ |
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2134 while (map < end_map) { \ |
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2135 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2136 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2137 low, high, \ |
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2138 do_oop, assert_fn) \ |
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2139 ++map; \ |
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2140 } \ |
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2141 } else { \ |
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2142 while (map < end_map) { \ |
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2143 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2144 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2145 low, high, \ |
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2146 do_oop, assert_fn) \ |
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2147 ++map; \ |
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2148 } \ |
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2149 } \ |
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2150 } |
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2151 |
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2152 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2153 assert(obj != NULL, "can't follow the content of NULL object"); |
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2154 MarkSweep::follow_klass(obj->klass()); |
113
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2155 InstanceKlass_OOP_MAP_ITERATE( \ |
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2156 obj, \ |
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2157 MarkSweep::mark_and_push(p), \ |
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2158 assert_is_in_closed_subset) |
0 | 2159 } |
2160 | |
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2161 #if INCLUDE_ALL_GCS |
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2162 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2163 oop obj) { |
113
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2164 assert(obj != NULL, "can't follow the content of NULL object"); |
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2165 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2166 // Only mark the header and let the scan of the meta-data mark |
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2167 // everything else. |
113
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2168 InstanceKlass_OOP_MAP_ITERATE( \ |
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2169 obj, \ |
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2170 PSParallelCompact::mark_and_push(cm, p), \ |
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2171 assert_is_in) |
0 | 2172 } |
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2173 #endif // INCLUDE_ALL_GCS |
0 | 2174 |
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2175 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2176 // applied to the klass ptr in the object header. |
2177 | |
342
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2178 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2179 \ |
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2180 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2181 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2182 /* header */ \ |
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2183 if_do_metadata_checked(closure, nv_suffix) { \ |
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2184 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2185 } \ |
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2186 InstanceKlass_OOP_MAP_ITERATE( \ |
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2187 obj, \ |
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2188 SpecializationStats:: \ |
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2189 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2190 (closure)->do_oop##nv_suffix(p), \ |
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2191 assert_is_in_closed_subset) \ |
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2192 return size_helper(); \ |
0 | 2193 } |
2194 | |
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2195 #if INCLUDE_ALL_GCS |
342
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2196 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2197 \ |
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2198 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2199 OopClosureType* closure) { \ |
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2200 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2201 \ |
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2202 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2203 \ |
342
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2204 /* instance variables */ \ |
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2205 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2206 obj, \ |
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2207 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2208 (closure)->do_oop##nv_suffix(p), \ |
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2209 assert_is_in_closed_subset) \ |
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2210 return size_helper(); \ |
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2211 } |
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2212 #endif // INCLUDE_ALL_GCS |
342
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2213 |
113
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2214 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2215 \ |
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2216 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2217 OopClosureType* closure, \ |
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2218 MemRegion mr) { \ |
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2219 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2220 if_do_metadata_checked(closure, nv_suffix) { \ |
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2221 if (mr.contains(obj)) { \ |
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2222 closure->do_klass##nv_suffix(obj->klass()); \ |
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2223 } \ |
113
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2224 } \ |
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2225 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2226 obj, mr.start(), mr.end(), \ |
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2227 (closure)->do_oop##nv_suffix(p), \ |
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2228 assert_is_in_closed_subset) \ |
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2229 return size_helper(); \ |
0 | 2230 } |
2231 | |
2232 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2233 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2234 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2235 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2236 #if INCLUDE_ALL_GCS |
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2237 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2238 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2239 #endif // INCLUDE_ALL_GCS |
0 | 2240 |
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2241 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2242 int size = size_helper(); |
113
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2243 InstanceKlass_OOP_MAP_ITERATE( \ |
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2244 obj, \ |
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2245 MarkSweep::adjust_pointer(p), \ |
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2246 assert_is_in) |
0 | 2247 return size; |
2248 } | |
2249 | |
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2250 #if INCLUDE_ALL_GCS |
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2251 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2252 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2253 obj, \ |
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2254 if (PSScavenge::should_scavenge(p)) { \ |
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2255 pm->claim_or_forward_depth(p); \ |
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2256 }, \ |
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2257 assert_nothing ) |
0 | 2258 } |
2259 | |
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2260 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2261 int size = size_helper(); |
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2262 InstanceKlass_OOP_MAP_ITERATE( \ |
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2263 obj, \ |
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2264 PSParallelCompact::adjust_pointer(p), \ |
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2265 assert_is_in) |
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2266 return size; |
0 | 2267 } |
2268 | |
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2269 #endif // INCLUDE_ALL_GCS |
0 | 2270 |
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2271 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
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2272 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
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2273 if (is_interface()) { |
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2274 if (ClassUnloading) { |
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2275 Klass* impl = implementor(); |
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2276 if (impl != NULL) { |
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2277 if (!impl->is_loader_alive(is_alive)) { |
5998
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2278 // remove this guy |
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2279 Klass** klass = adr_implementor(); |
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2280 assert(klass != NULL, "null klass"); |
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2281 if (klass != NULL) { |
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2282 *klass = NULL; |
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2283 } |
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2284 } |
0 | 2285 } |
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2286 } |
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2287 } |
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2288 } |
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2289 |
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2290 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2291 for (int m = 0; m < methods()->length(); m++) { |
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2292 MethodData* mdo = methods()->at(m)->method_data(); |
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2293 if (mdo != NULL) { |
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|
2294 mdo->clean_method_data(is_alive); |
0 | 2295 } |
2296 } | |
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2297 } |
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2298 |
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2299 |
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2300 static void remove_unshareable_in_class(Klass* k) { |
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2301 // remove klass's unshareable info |
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2302 k->remove_unshareable_info(); |
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2303 } |
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2304 |
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2305 void InstanceKlass::remove_unshareable_info() { |
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2306 Klass::remove_unshareable_info(); |
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2307 // Unlink the class |
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2308 if (is_linked()) { |
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2309 unlink_class(); |
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2310 } |
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2311 init_implementor(); |
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2312 |
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2313 constants()->remove_unshareable_info(); |
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2314 |
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2315 for (int i = 0; i < methods()->length(); i++) { |
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2316 Method* m = methods()->at(i); |
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2317 m->remove_unshareable_info(); |
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2318 } |
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2319 |
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2320 // do array classes also. |
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2321 array_klasses_do(remove_unshareable_in_class); |
0 | 2322 } |
2323 | |
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2324 void restore_unshareable_in_class(Klass* k, TRAPS) { |
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2325 k->restore_unshareable_info(CHECK); |
0 | 2326 } |
2327 | |
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2328 void InstanceKlass::restore_unshareable_info(TRAPS) { |
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2329 Klass::restore_unshareable_info(CHECK); |
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2330 instanceKlassHandle ik(THREAD, this); |
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2331 |
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2332 Array<Method*>* methods = ik->methods(); |
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2333 int num_methods = methods->length(); |
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2334 for (int index2 = 0; index2 < num_methods; ++index2) { |
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2335 methodHandle m(THREAD, methods->at(index2)); |
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2336 m->restore_unshareable_info(CHECK); |
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2337 } |
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2338 if (JvmtiExport::has_redefined_a_class()) { |
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2339 // Reinitialize vtable because RedefineClasses may have changed some |
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2340 // entries in this vtable for super classes so the CDS vtable might |
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2341 // point to old or obsolete entries. RedefineClasses doesn't fix up |
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2342 // vtables in the shared system dictionary, only the main one. |
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2343 // It also redefines the itable too so fix that too. |
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2344 ResourceMark rm(THREAD); |
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|
2345 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2346 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2347 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2348 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2349 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2350 ik->constants()->restore_unshareable_info(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 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
|
2353 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2354 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2355 static void clear_all_breakpoints(Method* m) { |
0 | 2356 m->clear_all_breakpoints(); |
2357 } | |
2358 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2359 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2360 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2361 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2362 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2363 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2364 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2365 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2366 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2367 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2368 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2369 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2370 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
|
2371 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2372 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2373 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2374 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2375 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2377 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2378 // 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
|
2379 // 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
|
2380 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2381 |
0 | 2382 // Deallocate oop map cache |
2383 if (_oop_map_cache != NULL) { | |
2384 delete _oop_map_cache; | |
2385 _oop_map_cache = NULL; | |
2386 } | |
2387 | |
2388 // Deallocate JNI identifiers for jfieldIDs | |
2389 JNIid::deallocate(jni_ids()); | |
2390 set_jni_ids(NULL); | |
2391 | |
2392 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2393 if (jmeths != (jmethodID*)NULL) { | |
2394 release_set_methods_jmethod_ids(NULL); | |
2395 FreeHeap(jmeths); | |
2396 } | |
2397 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2398 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2399 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2400 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
|
2401 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
|
2402 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2403 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2404 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2405 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2406 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2407 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2408 |
0 | 2409 // release dependencies |
2410 nmethodBucket* b = _dependencies; | |
2411 _dependencies = NULL; | |
2412 while (b != NULL) { | |
2413 nmethodBucket* next = b->next(); | |
2414 delete b; | |
2415 b = next; | |
2416 } | |
2417 | |
2418 // Deallocate breakpoint records | |
2419 if (breakpoints() != 0x0) { | |
2420 methods_do(clear_all_breakpoints); | |
2421 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2422 } | |
2423 | |
2424 // deallocate information about previous versions | |
2425 if (_previous_versions != NULL) { | |
2426 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2427 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2428 delete pv_node; | |
2429 } | |
2430 delete _previous_versions; | |
2431 _previous_versions = NULL; | |
2432 } | |
2433 | |
2434 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2435 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2436 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2437 _cached_class_file = NULL; |
0 | 2438 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2439 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2440 // 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
|
2441 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2442 // 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
|
2443 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2444 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
|
2445 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
|
2446 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2447 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2448 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2449 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2450 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2451 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
|
2452 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2453 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2454 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2455 // 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
|
2456 // 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
|
2457 // 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
|
2458 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2459 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2460 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
|
2461 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2462 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2463 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2464 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2465 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2466 } |
0 | 2467 } |
2468 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2469 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2470 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
|
2471 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2472 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2473 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2474 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2475 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2476 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2477 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2478 // If this is an anonymous class, append a hash to make the name unique |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2479 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2480 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2481 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2482 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2483 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2484 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2485 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2486 // Get the internal name as a c string |
0 | 2487 const char* src = (const char*) (name()->as_C_string()); |
2488 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2489 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2490 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2491 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2492 // Add L as type indicator |
0 | 2493 int dest_index = 0; |
2494 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2495 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2496 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2497 for (int src_index = 0; src_index < src_length; ) { |
0 | 2498 dest[dest_index++] = src[src_index++]; |
2499 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2500 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2501 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2502 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2503 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2504 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2505 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2506 // Add the semicolon and the NULL |
0 | 2507 dest[dest_index++] = ';'; |
2508 dest[dest_index] = '\0'; | |
2509 return dest; | |
2510 } | |
2511 | |
2512 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2513 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2514 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2515 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2516 Symbol* classname1 = class1->name(); |
2517 | |
2518 if (class2->oop_is_objArray()) { | |
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2519 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2520 } |
2521 oop classloader2; | |
6983 | 2522 if (class2->oop_is_instance()) { |
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2523 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2524 } else { |
6983 | 2525 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2526 classloader2 = NULL; |
2527 } | |
6983 | 2528 Symbol* classname2 = class2->name(); |
0 | 2529 |
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2530 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2531 classloader2, classname2); |
2532 } | |
2533 | |
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2534 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
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2535 Klass* class1 = this; |
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2536 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2537 Symbol* classname1 = class1->name(); |
0 | 2538 |
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2539 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2540 classloader2, classname2); |
2541 } | |
2542 | |
2543 // return true if two classes are in the same package, classloader | |
2544 // and classname information is enough to determine a class's package | |
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2545 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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2546 oop class_loader2, Symbol* class_name2) { |
0 | 2547 if (class_loader1 != class_loader2) { |
2548 return false; | |
665
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2549 } else if (class_name1 == class_name2) { |
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2550 return true; // skip painful bytewise comparison |
0 | 2551 } else { |
2552 ResourceMark rm; | |
2553 | |
2177
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|
2554 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2555 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2556 // Otherwise, we just compare jbyte values between the strings. | |
2177
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2557 const jbyte *name1 = class_name1->base(); |
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2558 const jbyte *name2 = class_name2->base(); |
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|
2559 |
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|
2560 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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|
2561 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2562 |
2563 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2564 // One of the two doesn't have a package. Only return true | |
2565 // if the other one also doesn't have a package. | |
2566 return last_slash1 == last_slash2; | |
2567 } else { | |
2568 // Skip over '['s | |
2569 if (*name1 == '[') { | |
2570 do { | |
2571 name1++; | |
2572 } while (*name1 == '['); | |
2573 if (*name1 != 'L') { | |
2574 // Something is terribly wrong. Shouldn't be here. | |
2575 return false; | |
2576 } | |
2577 } | |
2578 if (*name2 == '[') { | |
2579 do { | |
2580 name2++; | |
2581 } while (*name2 == '['); | |
2582 if (*name2 != 'L') { | |
2583 // Something is terribly wrong. Shouldn't be here. | |
2584 return false; | |
2585 } | |
2586 } | |
2587 | |
2588 // Check that package part is identical | |
2589 int length1 = last_slash1 - name1; | |
2590 int length2 = last_slash2 - name2; | |
2591 | |
2592 return UTF8::equal(name1, length1, name2, length2); | |
2593 } | |
2594 } | |
2595 } | |
2596 | |
652
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|
2597 // Returns true iff super_method can be overridden by a method in targetclassname |
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|
2598 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
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|
2599 // Assumes name-signature match |
6725
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2600 // "this" is InstanceKlass of super_method which must exist |
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2601 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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2602 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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|
2603 // Private methods can not be overridden |
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|
2604 if (super_method->is_private()) { |
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|
2605 return false; |
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diff
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|
2606 } |
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diff
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|
2607 // If super method is accessible, then override |
4aaa9f5e02a8
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|
2608 if ((super_method->is_protected()) || |
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|
2609 (super_method->is_public())) { |
4aaa9f5e02a8
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|
2610 return true; |
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diff
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|
2611 } |
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|
2612 // Package-private methods are not inherited outside of package |
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|
2613 assert(super_method->is_package_private(), "must be package private"); |
2177
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|
2614 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
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|
2615 } |
0 | 2616 |
665
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|
2617 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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|
2618 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2619 Symbol*& simple_name_result, TRAPS) { |
665
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|
2620 ... |
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|
2621 } |
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|
2622 */ |
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|
2623 |
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6814659: separable cleanups and subroutines for 6655638
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|
2624 // tell if two classes have the same enclosing class (at package level) |
6725
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2625 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
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|
2626 Klass* class2_oop, TRAPS) { |
da91efe96a93
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|
2627 if (class2_oop == class1()) return true; |
6983 | 2628 if (!class2_oop->oop_is_instance()) return false; |
665
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|
2629 instanceKlassHandle class2(THREAD, class2_oop); |
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|
2630 |
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|
2631 // must be in same package before we try anything else |
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|
2632 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
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|
2633 return false; |
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|
2634 |
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6814659: separable cleanups and subroutines for 6655638
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|
2635 // As long as there is an outer1.getEnclosingClass, |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2636 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2637 instanceKlassHandle outer1 = class1; |
c89f86385056
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|
2638 for (;;) { |
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6814659: separable cleanups and subroutines for 6655638
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|
2639 // As we walk along, look for equalities between outer1 and class2. |
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|
2640 // Eventually, the walks will terminate as outer1 stops |
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|
2641 // at the top-level class around the original class. |
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|
2642 bool ignore_inner_is_member; |
6725
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2643 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
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|
2644 CHECK_false); |
665
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|
2645 if (next == NULL) break; |
c89f86385056
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|
2646 if (next == class2()) return true; |
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|
2647 outer1 = instanceKlassHandle(THREAD, next); |
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|
2648 } |
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|
2649 |
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|
2650 // Now do the same for class2. |
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|
2651 instanceKlassHandle outer2 = class2; |
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|
2652 for (;;) { |
1126
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|
2653 bool ignore_inner_is_member; |
6725
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2654 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
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diff
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|
2655 CHECK_false); |
665
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|
2656 if (next == NULL) break; |
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|
2657 // Might as well check the new outer against all available values. |
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|
2658 if (next == class1()) return true; |
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|
2659 if (next == outer1()) return true; |
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|
2660 outer2 = instanceKlassHandle(THREAD, next); |
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|
2661 } |
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|
2662 |
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|
2663 // If by this point we have not found an equality between the |
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|
2664 // two classes, we know they are in separate package members. |
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|
2665 return false; |
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|
2666 } |
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|
2667 |
0 | 2668 |
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|
2669 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2670 jint access = access_flags().as_int(); |
2671 | |
2672 // But check if it happens to be member class. | |
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2673 instanceKlassHandle ik(THREAD, this); |
5967
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4739
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|
2674 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4739
diff
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|
2675 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
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jiangli
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4739
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|
2676 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
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jiangli
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4739
diff
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|
2677 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
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4739
diff
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|
2678 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
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|
2679 if (ioff == 0) continue; |
f7c4174b33ba
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jiangli
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4739
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|
2680 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2681 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2682 // since we are looking for the flags for our self. |
f7c4174b33ba
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jiangli
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4739
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|
2683 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
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jiangli
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4739
diff
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|
2684 if ((ik->name() == inner_name)) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2685 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2686 access = iter.inner_access_flags(); |
f7c4174b33ba
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jiangli
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4739
diff
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|
2687 break; |
0 | 2688 } |
2689 } | |
2690 // Remember to strip ACC_SUPER bit | |
2691 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2692 } | |
2693 | |
6725
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|
2694 jint InstanceKlass::jvmti_class_status() const { |
0 | 2695 jint result = 0; |
2696 | |
2697 if (is_linked()) { | |
2698 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2699 } | |
2700 | |
2701 if (is_initialized()) { | |
2702 assert(is_linked(), "Class status is not consistent"); | |
2703 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2704 } | |
2705 if (is_in_error_state()) { | |
2706 result |= JVMTI_CLASS_STATUS_ERROR; | |
2707 } | |
2708 return result; | |
2709 } | |
2710 | |
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2711 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2712 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2713 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2714 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2715 / itableOffsetEntry::size(); | |
2716 | |
2717 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2718 // If the interface isn't implemented by the receiver class, |
0 | 2719 // the VM should throw IncompatibleClassChangeError. |
2720 if (cnt >= nof_interfaces) { | |
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2721 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2722 } |
2723 | |
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2724 Klass* ik = ioe->interface_klass(); |
0 | 2725 if (ik == holder) break; |
2726 } | |
2727 | |
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2728 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2729 Method* m = ime[index].method(); |
0 | 2730 if (m == NULL) { |
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2731 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2732 } |
2733 return m; | |
2734 } | |
2735 | |
12823
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|
2736 |
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2737 #if INCLUDE_JVMTI |
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2738 // update default_methods for redefineclasses for methods that are |
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2739 // not yet in the vtable due to concurrent subclass define and superinterface |
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|
2740 // redefinition |
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2741 // Note: those in the vtable, should have been updated via adjust_method_entries |
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2742 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
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2743 int methods_length, bool* trace_name_printed) { |
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2744 // search the default_methods for uses of either obsolete or EMCP methods |
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2745 if (default_methods() != NULL) { |
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|
2746 for (int j = 0; j < methods_length; j++) { |
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2747 Method* old_method = old_methods[j]; |
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2748 Method* new_method = new_methods[j]; |
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|
2749 |
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2750 for (int index = 0; index < default_methods()->length(); index ++) { |
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2751 if (default_methods()->at(index) == old_method) { |
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2752 default_methods()->at_put(index, new_method); |
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|
2753 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
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|
2754 if (!(*trace_name_printed)) { |
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|
2755 // RC_TRACE_MESG macro has an embedded ResourceMark |
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2756 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
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|
2757 external_name(), |
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|
2758 old_method->method_holder()->external_name())); |
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|
2759 *trace_name_printed = true; |
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|
2760 } |
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|
2761 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
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|
2762 new_method->name()->as_C_string(), |
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|
2763 new_method->signature()->as_C_string())); |
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|
2764 } |
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|
2765 } |
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|
2766 } |
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|
2767 } |
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|
2768 } |
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|
2769 } |
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|
2770 #endif // INCLUDE_JVMTI |
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|
2771 |
0 | 2772 // On-stack replacement stuff |
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2773 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2774 // only one compilation can be active |
2775 NEEDS_CLEANUP | |
2776 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2777 OsrList_lock->lock_without_safepoint_check(); | |
2778 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
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2779 n->set_osr_link(osr_nmethods_head()); |
0 | 2780 set_osr_nmethods_head(n); |
1783 | 2781 // Raise the highest osr level if necessary |
2782 if (TieredCompilation) { | |
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2783 Method* m = n->method(); |
1783 | 2784 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2785 } | |
0 | 2786 // Remember to unlock again |
2787 OsrList_lock->unlock(); | |
1783 | 2788 |
2789 // Get rid of the osr methods for the same bci that have lower levels. | |
2790 if (TieredCompilation) { | |
2791 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2792 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2793 if (inv != NULL && inv->is_in_use()) { | |
2794 inv->make_not_entrant(); | |
2795 } | |
2796 } | |
2797 } | |
0 | 2798 } |
2799 | |
2800 | |
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2801 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2802 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2803 OsrList_lock->lock_without_safepoint_check(); | |
2804 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2805 nmethod* last = NULL; | |
2806 nmethod* cur = osr_nmethods_head(); | |
1783 | 2807 int max_level = CompLevel_none; // Find the max comp level excluding n |
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2808 Method* m = n->method(); |
0 | 2809 // Search for match |
2810 while(cur != NULL && cur != n) { | |
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|
2811 if (TieredCompilation && m == cur->method()) { |
1783 | 2812 // Find max level before n |
2813 max_level = MAX2(max_level, cur->comp_level()); | |
2814 } | |
0 | 2815 last = cur; |
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2816 cur = cur->osr_link(); |
0 | 2817 } |
1783 | 2818 nmethod* next = NULL; |
0 | 2819 if (cur == n) { |
1783 | 2820 next = cur->osr_link(); |
0 | 2821 if (last == NULL) { |
2822 // Remove first element | |
1783 | 2823 set_osr_nmethods_head(next); |
0 | 2824 } else { |
1783 | 2825 last->set_osr_link(next); |
0 | 2826 } |
2827 } | |
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2828 n->set_osr_link(NULL); |
1783 | 2829 if (TieredCompilation) { |
2830 cur = next; | |
2831 while (cur != NULL) { | |
2832 // Find max level after n | |
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|
2833 if (m == cur->method()) { |
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|
2834 max_level = MAX2(max_level, cur->comp_level()); |
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|
2835 } |
1783 | 2836 cur = cur->osr_link(); |
2837 } | |
2838 m->set_highest_osr_comp_level(max_level); | |
2839 } | |
0 | 2840 // Remember to unlock again |
2841 OsrList_lock->unlock(); | |
2842 } | |
2843 | |
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8003557: NPG: Klass* const k should be const Klass* k.
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|
2844 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2845 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2846 OsrList_lock->lock_without_safepoint_check(); | |
2847 nmethod* osr = osr_nmethods_head(); | |
1783 | 2848 nmethod* best = NULL; |
0 | 2849 while (osr != NULL) { |
2850 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2851 // There can be a time when a c1 osr method exists but we are waiting |
2852 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2853 // the c1 version and only be able to find the c2 version. However | |
2854 // while we overflow in the c1 code at back branches we don't want to | |
2855 // try and switch to the same code as we are already running | |
2856 | |
0 | 2857 if (osr->method() == m && |
2858 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2859 if (match_level) { |
2860 if (osr->comp_level() == comp_level) { | |
2861 // Found a match - return it. | |
2862 OsrList_lock->unlock(); | |
2863 return osr; | |
2864 } | |
2865 } else { | |
2866 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2867 if (osr->comp_level() == CompLevel_highest_tier) { | |
2868 // Found the best possible - return it. | |
2869 OsrList_lock->unlock(); | |
2870 return osr; | |
2871 } | |
2872 best = osr; | |
2873 } | |
2874 } | |
0 | 2875 } |
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|
2876 osr = osr->osr_link(); |
0 | 2877 } |
2878 OsrList_lock->unlock(); | |
1783 | 2879 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2880 return best; | |
2881 } | |
0 | 2882 return NULL; |
2883 } | |
2884 | |
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|
2885 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
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|
2886 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
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8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2887 MutexLocker ml(MemberNameTable_lock); |
10345
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|
2888 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
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|
2889 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2890 |
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|
2891 if (_member_names == NULL) { |
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|
2892 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
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|
2893 } |
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|
2894 _member_names->add_member_name(index, mem_name_wref); |
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|
2895 } |
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|
2896 |
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|
2897 oop InstanceKlass::get_member_name(int index) { |
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|
2898 MutexLocker ml(MemberNameTable_lock); |
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|
2899 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
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2900 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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|
2901 |
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2902 if (_member_names == NULL) { |
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2903 return NULL; |
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|
2904 } |
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2905 oop mem_name =_member_names->get_member_name(index); |
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2906 return mem_name; |
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2907 } |
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2908 |
0 | 2909 // ----------------------------------------------------------------------------------------------------- |
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2910 // Printing |
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2911 |
0 | 2912 #ifndef PRODUCT |
2913 | |
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diff
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|
2914 #define BULLET " - " |
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|
2915 |
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2916 static const char* state_names[] = { |
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2917 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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2918 }; |
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|
2919 |
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changeset
|
2920 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
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parents:
12067
diff
changeset
|
2921 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
|
2922 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2923 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
|
2924 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
|
2925 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2926 ((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
|
2927 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2928 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2929 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2930 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2931 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2932 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
|
2933 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2934 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2935 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2936 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2937 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2938 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
|
2939 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
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changeset
|
2940 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2941 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2942 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2943 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2944 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2945 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
|
2946 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2947 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2948 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2949 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2950 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2951 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2952 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2953 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2954 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 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
|
2956 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2957 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2958 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2959 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2960 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2961 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2962 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2963 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2964 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
|
2965 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
|
2966 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2967 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2968 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
|
2969 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2970 } |
da91efe96a93
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parents:
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diff
changeset
|
2971 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2972 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
|
2973 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
|
2974 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2975 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2976 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2977 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
|
2978 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2979 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2980 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2981 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
|
2982 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2983 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
|
2984 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
|
2985 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
|
2986 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2987 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2988 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2989 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 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
|
2992 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2997 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2998 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3001 } |
8031 | 3002 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3003 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3004 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3005 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3007 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3008 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3009 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
|
3010 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
|
3011 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3012 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3013 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3014 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
|
3015 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3016 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3017 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3018 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3019 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3020 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3021 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3022 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3023 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 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
|
3025 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
|
3026 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
|
3027 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
|
3028 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
|
3029 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
|
3030 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3031 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3032 ((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
|
3033 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
|
3034 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3035 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3036 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3038 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3039 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
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|
3040 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3041 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3042 map++; |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3043 } |
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diff
changeset
|
3044 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3045 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3046 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3047 #endif //PRODUCT |
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|
3048 |
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changeset
|
3049 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3050 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
|
3051 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3052 name()->print_value_on(st); |
da91efe96a93
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|
3053 } |
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|
3054 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3055 #ifndef PRODUCT |
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|
3056 |
0 | 3057 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3058 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
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diff
changeset
|
3059 if (_obj == NULL) { |
0 | 3060 fd->print_on(_st); |
3061 _st->cr(); | |
3062 } else { | |
3063 fd->print_on_for(_st, _obj); | |
3064 _st->cr(); | |
3065 } | |
3066 } | |
3067 | |
3068 | |
6725
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coleenp
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|
3069 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3070 Klass::oop_print_on(obj, st); |
3071 | |
6725
da91efe96a93
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changeset
|
3072 if (this == SystemDictionary::String_klass()) { |
0 | 3073 typeArrayOop value = java_lang_String::value(obj); |
3074 juint offset = java_lang_String::offset(obj); | |
3075 juint length = java_lang_String::length(obj); | |
3076 if (value != NULL && | |
3077 value->is_typeArray() && | |
3078 offset <= (juint) value->length() && | |
3079 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3080 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3081 java_lang_String::print(obj, st); |
0 | 3082 st->cr(); |
3083 if (!WizardMode) return; // that is enough | |
3084 } | |
3085 } | |
3086 | |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
3087 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
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parents:
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diff
changeset
|
3088 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
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diff
changeset
|
3089 do_nonstatic_fields(&print_field); |
0 | 3090 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3091 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
3092 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
changeset
|
3093 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3094 st->cr(); |
6725
da91efe96a93
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changeset
|
3095 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
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jrose
parents:
605
diff
changeset
|
3096 st->print(BULLET"fake entry for mirror: "); |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3097 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3098 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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changeset
|
3099 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3100 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3101 array_klass->print_value_on_maybe_null(st); |
0 | 3102 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3103 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
|
3104 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3105 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3106 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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changeset
|
3107 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
|
3108 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3109 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3110 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3111 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3112 st->cr(); |
0 | 3113 } |
3114 } | |
3115 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3116 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3117 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3118 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3119 st->print("a "); |
3120 name()->print_value_on(st); | |
3121 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3122 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3123 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3124 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3125 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3126 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3127 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3128 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3129 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3130 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3131 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3132 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3133 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3134 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3135 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3136 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3137 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3138 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3139 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3140 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3141 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3142 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3143 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3144 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3145 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3146 } 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
|
3147 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
|
3148 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3149 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3150 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3151 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3152 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3153 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3154 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3155 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3156 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3157 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3158 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3159 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3160 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
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|
3161 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
3162 } |
0 | 3163 } |
3164 | |
6725
da91efe96a93
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coleenp
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diff
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|
3165 const char* InstanceKlass::internal_name() const { |
0 | 3166 return external_name(); |
3167 } | |
3168 | |
7956 | 3169 #if INCLUDE_SERVICES |
3170 // Size Statistics | |
3171 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3172 Klass::collect_statistics(sz); | |
3173 | |
3174 sz->_inst_size = HeapWordSize * size_helper(); | |
3175 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3176 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3177 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3178 ((is_interface() || is_anonymous()) ? | |
3179 align_object_offset(nonstatic_oop_map_size()) : | |
3180 nonstatic_oop_map_size()); | |
3181 | |
3182 int n = 0; | |
3183 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3184 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3185 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3186 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3187 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3188 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3189 sz->_ro_bytes += n; | |
3190 | |
3191 const ConstantPool* cp = constants(); | |
3192 if (cp) { | |
3193 cp->collect_statistics(sz); | |
3194 } | |
3195 | |
3196 const Annotations* anno = annotations(); | |
3197 if (anno) { | |
3198 anno->collect_statistics(sz); | |
3199 } | |
3200 | |
3201 const Array<Method*>* methods_array = methods(); | |
3202 if (methods()) { | |
3203 for (int i = 0; i < methods_array->length(); i++) { | |
3204 Method* method = methods_array->at(i); | |
3205 if (method) { | |
3206 sz->_method_count ++; | |
3207 method->collect_statistics(sz); | |
3208 } | |
3209 } | |
3210 } | |
3211 } | |
3212 #endif // INCLUDE_SERVICES | |
3213 | |
0 | 3214 // Verification |
3215 | |
3216 class VerifyFieldClosure: public OopClosure { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3217 protected: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3218 template <class T> void do_oop_work(T* p) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3219 oop obj = oopDesc::load_decode_heap_oop(p); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3220 if (!obj->is_oop_or_null()) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3221 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3222 Universe::print(); |
3223 guarantee(false, "boom"); | |
3224 } | |
3225 } | |
113
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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|
3226 public: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3227 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3228 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3229 }; |
3230 | |
17674
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|
3231 void InstanceKlass::verify_on(outputStream* st) { |
6725
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3232 #ifndef PRODUCT |
11034 | 3233 // Avoid redundant verifies, this really should be in product. |
6725
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3234 if (_verify_count == Universe::verify_count()) return; |
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3235 _verify_count = Universe::verify_count(); |
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3236 #endif |
11034 | 3237 |
3238 // Verify Klass | |
17674
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|
3239 Klass::verify_on(st); |
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|
3240 |
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|
3241 // Verify that klass is present in ClassLoaderData |
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|
3242 guarantee(class_loader_data()->contains_klass(this), |
85318d1fe8fe
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|
3243 "this class isn't found in class loader data"); |
6725
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|
3244 |
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|
3245 // Verify vtables |
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|
3246 if (is_linked()) { |
11034 | 3247 ResourceMark rm; |
6725
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3248 // $$$ This used to be done only for m/s collections. Doing it |
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3249 // always seemed a valid generalization. (DLD -- 6/00) |
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|
3250 vtable()->verify(st); |
da91efe96a93
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|
3251 } |
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|
3252 |
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|
3253 // Verify first subklass |
da91efe96a93
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|
3254 if (subklass_oop() != NULL) { |
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|
3255 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3256 } |
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|
3257 |
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|
3258 // Verify siblings |
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|
3259 Klass* super = this->super(); |
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3260 Klass* sib = next_sibling(); |
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|
3261 if (sib != NULL) { |
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|
3262 if (sib == this) { |
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|
3263 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3264 } |
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|
3265 |
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|
3266 guarantee(sib->is_klass(), "should be klass"); |
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3267 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3268 } |
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|
3269 |
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|
3270 // Verify implementor fields |
da91efe96a93
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|
3271 Klass* im = implementor(); |
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|
3272 if (im != NULL) { |
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|
3273 guarantee(is_interface(), "only interfaces should have implementor set"); |
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|
3274 guarantee(im->is_klass(), "should be klass"); |
6983 | 3275 guarantee(!im->is_interface() || im == this, |
6725
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|
3276 "implementors cannot be interfaces"); |
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|
3277 } |
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|
3278 |
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|
3279 // Verify local interfaces |
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|
3280 if (local_interfaces()) { |
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|
3281 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3282 for (int j = 0; j < local_interfaces->length(); j++) { |
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3283 Klass* e = local_interfaces->at(j); |
6983 | 3284 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3285 } |
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|
3286 } |
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|
3287 |
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|
3288 // Verify transitive interfaces |
da91efe96a93
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|
3289 if (transitive_interfaces() != NULL) { |
da91efe96a93
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|
3290 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
da91efe96a93
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|
3291 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
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|
3292 Klass* e = transitive_interfaces->at(j); |
6983 | 3293 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3294 } |
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|
3295 } |
da91efe96a93
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|
3296 |
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|
3297 // Verify methods |
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|
3298 if (methods() != NULL) { |
da91efe96a93
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|
3299 Array<Method*>* methods = this->methods(); |
da91efe96a93
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|
3300 for (int j = 0; j < methods->length(); j++) { |
da91efe96a93
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|
3301 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
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|
3302 } |
da91efe96a93
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|
3303 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3304 Method* m1 = methods->at(j); |
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|
3305 Method* m2 = methods->at(j + 1); |
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|
3306 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3307 } |
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|
3308 } |
da91efe96a93
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|
3309 |
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|
3310 // Verify method ordering |
da91efe96a93
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|
3311 if (method_ordering() != NULL) { |
da91efe96a93
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|
3312 Array<int>* method_ordering = this->method_ordering(); |
da91efe96a93
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|
3313 int length = method_ordering->length(); |
da91efe96a93
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|
3314 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3315 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
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|
3316 guarantee(length == methods()->length(), "invalid method ordering length"); |
da91efe96a93
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|
3317 jlong sum = 0; |
da91efe96a93
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|
3318 for (int j = 0; j < length; j++) { |
da91efe96a93
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|
3319 int original_index = method_ordering->at(j); |
da91efe96a93
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|
3320 guarantee(original_index >= 0, "invalid method ordering index"); |
da91efe96a93
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|
3321 guarantee(original_index < length, "invalid method ordering index"); |
da91efe96a93
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|
3322 sum += original_index; |
da91efe96a93
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|
3323 } |
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|
3324 // Verify sum of indices 0,1,...,length-1 |
da91efe96a93
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|
3325 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
da91efe96a93
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|
3326 } else { |
da91efe96a93
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|
3327 guarantee(length == 0, "invalid method ordering length"); |
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|
3328 } |
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|
3329 } |
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|
3330 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3331 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3332 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3333 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3334 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3335 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3336 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3337 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3338 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3339 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3340 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
|
3341 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3342 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3343 |
6725
da91efe96a93
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|
3344 // Verify JNI static field identifiers |
da91efe96a93
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|
3345 if (jni_ids() != NULL) { |
da91efe96a93
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|
3346 jni_ids()->verify(this); |
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|
3347 } |
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|
3348 |
da91efe96a93
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|
3349 // Verify other fields |
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|
3350 if (array_klasses() != NULL) { |
da91efe96a93
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|
3351 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3352 } |
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|
3353 if (constants() != NULL) { |
da91efe96a93
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|
3354 guarantee(constants()->is_constantPool(), "should be constant pool"); |
da91efe96a93
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|
3355 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3356 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3357 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3358 guarantee(host->is_klass(), "should be klass"); |
6725
da91efe96a93
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|
3359 } |
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3360 } |
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3361 |
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3362 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3363 Klass::oop_verify_on(obj, st); |
3364 VerifyFieldClosure blk; | |
6725
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3365 obj->oop_iterate_no_header(&blk); |
0 | 3366 } |
3367 | |
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3368 |
113
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3369 // JNIid class for jfieldIDs only |
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3370 // Note to reviewers: |
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3371 // These JNI functions are just moved over to column 1 and not changed |
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3372 // in the compressed oops workspace. |
6725
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3373 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3374 _holder = holder; |
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3375 _offset = offset; |
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3376 _next = next; |
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3377 debug_only(_is_static_field_id = false;) |
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3378 } |
0 | 3379 |
3380 | |
113
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3381 JNIid* JNIid::find(int offset) { |
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3382 JNIid* current = this; |
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3383 while (current != NULL) { |
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3384 if (current->offset() == offset) return current; |
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3385 current = current->next(); |
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|
3386 } |
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|
3387 return NULL; |
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3388 } |
0 | 3389 |
3390 void JNIid::deallocate(JNIid* current) { | |
113
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3391 while (current != NULL) { |
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3392 JNIid* next = current->next(); |
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3393 delete current; |
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|
3394 current = next; |
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|
3395 } |
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|
3396 } |
0 | 3397 |
3398 | |
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3399 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
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3400 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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3401 int end_field_offset; |
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3402 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3403 |
113
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3404 JNIid* current = this; |
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3405 while (current != NULL) { |
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3406 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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|
3407 #ifdef ASSERT |
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3408 int o = current->offset(); |
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3409 if (current->is_static_field_id()) { |
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3410 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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|
3411 } |
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|
3412 #endif |
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3413 current = current->next(); |
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3414 } |
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3415 } |
0 | 3416 |
3417 | |
3418 #ifdef ASSERT | |
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3419 void InstanceKlass::set_init_state(ClassState state) { |
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3420 bool good_state = is_shared() ? (_init_state <= state) |
113
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3421 : (_init_state < state); |
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3422 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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3423 _init_state = (u1)state; |
113
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3424 } |
0 | 3425 #endif |
3426 | |
3427 | |
3428 // RedefineClasses() support for previous versions: | |
3429 | |
6725
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3430 // Purge previous versions |
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3431 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3432 if (ik->previous_versions() != NULL) { |
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3433 // This klass has previous versions so see what we can cleanup |
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3434 // while it is safe to do so. |
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3435 |
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3436 int deleted_count = 0; // leave debugging breadcrumbs |
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3437 int live_count = 0; |
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3438 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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3439 ClassLoaderData::the_null_class_loader_data() : |
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3440 ik->class_loader_data(); |
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3441 |
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3442 // RC_TRACE macro has an embedded ResourceMark |
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3443 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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3444 ik->external_name(), ik->previous_versions()->length())); |
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3445 |
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3446 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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3447 // check the previous versions array |
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|
3448 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3449 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3450 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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3451 |
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3452 ConstantPool* pvcp = cp_ref; |
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3453 if (!pvcp->on_stack()) { |
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3454 // If the constant pool isn't on stack, none of the methods |
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3455 // are executing. Delete all the methods, the constant pool and |
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3456 // and this previous version node. |
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3457 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3458 if (method_refs != NULL) { |
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3459 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3460 Method* method = method_refs->at(j); |
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3461 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3462 method_refs->remove_at(j); |
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3463 // method will be freed with associated class. |
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|
3464 } |
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|
3465 } |
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|
3466 // Remove the constant pool |
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|
3467 delete pv_node; |
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3468 // Since we are traversing the array backwards, we don't have to |
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3469 // do anything special with the index. |
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|
3470 ik->previous_versions()->remove_at(i); |
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|
3471 deleted_count++; |
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|
3472 continue; |
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|
3473 } else { |
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3474 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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3475 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3476 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3477 live_count++; |
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|
3478 } |
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|
3479 |
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3480 // At least one method is live in this previous version, clean out |
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3481 // the others or mark them as obsolete. |
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3482 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3483 if (method_refs != NULL) { |
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3484 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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|
3485 method_refs->length())); |
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|
3486 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3487 Method* method = method_refs->at(j); |
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|
3488 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3489 |
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|
3490 // Remove the emcp method if it's not executing |
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3491 // If it's been made obsolete by a redefinition of a non-emcp |
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3492 // method, mark it as obsolete but leave it to clean up later. |
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3493 if (!method->on_stack()) { |
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|
3494 method_refs->remove_at(j); |
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|
3495 } else if (emcp_method_count == 0) { |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3496 method->set_is_obsolete(); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3497 } else { |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3498 // RC_TRACE macro has an embedded ResourceMark |
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diff
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|
3499 RC_TRACE(0x00000200, |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3500 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3501 method->name()->as_C_string(), |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3502 method->signature()->as_C_string(), j, i)); |
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diff
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|
3503 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3504 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3505 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3506 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3507 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
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diff
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|
3508 RC_TRACE(0x00000200, |
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diff
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|
3509 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
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coleenp
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diff
changeset
|
3510 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3511 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3512 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3513 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3514 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3515 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3516 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
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changeset
|
3517 purge_previous_versions_internal(ik, 1); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3518 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3519 |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3520 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3521 // Potentially add an information node that contains pointers to the |
0 | 3522 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3523 // 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
|
3524 // 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
|
3525 // 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
|
3526 // 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
|
3527 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3528 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
52
diff
changeset
|
3529 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3530 assert(Thread::current()->is_VM_thread(), |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3531 "only VMThread can add previous versions"); |
0 | 3532 |
3533 if (_previous_versions == NULL) { | |
3534 // This is the first previous version so make some space. | |
3535 // Start with 2 elements under the assumption that the class | |
3536 // won't be redefined much. | |
6197 | 3537 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3538 GrowableArray<PreviousVersionNode *>(2, true); |
3539 } | |
3540 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3541 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3542 |
0 | 3543 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3544 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
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diff
changeset
|
3545 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3546 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3547 cp_ref->on_stack())); |
da91efe96a93
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coleenp
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diff
changeset
|
3548 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3549 // If the constant pool for this previous version of the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3550 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3551 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3552 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3553 // we still need to examine older previous versions below. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3554 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3555 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3556 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3557 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3558 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3559 // 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
|
3560 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
|
3561 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3562 ("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
|
3563 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3564 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3565 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
|
3566 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3567 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
|
3568 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3569 // 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
|
3570 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
|
3571 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3572 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3573 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3574 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3575 // 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
|
3576 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3577 } |
0 | 3578 } |
3579 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3580 // 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
|
3581 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
|
3582 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3583 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3584 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3585 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3586 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3587 // 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
|
3588 // is a good time to clear out unused references. |
0 | 3589 |
3590 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3591 _previous_versions->length())); | |
3592 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3593 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3594 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3595 |
3596 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3597 | |
3598 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3599 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3600 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3601 // clear out any matching EMCP method entries the hard way. |
3602 int local_count = 0; | |
3603 for (int i = 0; i < old_methods->length(); i++) { | |
3604 if (!emcp_methods->at(i)) { | |
3605 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3606 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3607 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3608 Symbol* m_signature = old_method->signature(); |
0 | 3609 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3610 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3611 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3612 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3613 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3614 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
3615 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3616 if (method_refs == NULL) { |
3617 // We have run into a PreviousVersion generation where | |
3618 // all methods were made obsolete during that generation's | |
3619 // RedefineClasses() operation. At the time of that | |
3620 // operation, all EMCP methods were flushed so we don't | |
3621 // have to go back any further. | |
3622 // | |
3623 // A NULL method_refs is different than an empty method_refs. | |
3624 // We cannot infer any optimizations about older generations | |
3625 // from an empty method_refs for the current generation. | |
3626 break; | |
3627 } | |
3628 | |
3629 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3630 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3631 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3632 if (!method->is_obsolete() && |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3633 method->name() == m_name && |
0 | 3634 method->signature() == m_signature) { |
3635 // The current RedefineClasses() call has made all EMCP | |
3636 // versions of this method obsolete so mark it as obsolete | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3637 // and remove the reference. |
0 | 3638 RC_TRACE(0x00000400, |
3639 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3640 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3641 | |
3642 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3643 // Leave obsolete methods on the previous version list to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3644 // clean up later. |
0 | 3645 break; |
3646 } | |
3647 } | |
3648 | |
3649 // The previous loop may not find a matching EMCP method, but | |
3650 // that doesn't mean that we can optimize and not go any | |
3651 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3652 // method for this generation could have already been deleted, |
0 | 3653 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3654 // been deleted. |
0 | 3655 } |
3656 | |
3657 if (++local_count >= obsolete_method_count) { | |
3658 // no more obsolete methods so bail out now | |
3659 break; | |
3660 } | |
3661 } | |
3662 } | |
3663 } | |
3664 } // end add_previous_version() | |
3665 | |
3666 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3667 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3668 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3669 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3670 } // end has_previous_version() |
3671 | |
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3672 |
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3673 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3674 Method* m = NULL; |
0 | 3675 if (idnum < methods()->length()) { |
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3676 m = methods()->at(idnum); |
0 | 3677 } |
3678 if (m == NULL || m->method_idnum() != idnum) { | |
3679 for (int index = 0; index < methods()->length(); ++index) { | |
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3680 m = methods()->at(index); |
0 | 3681 if (m->method_idnum() == idnum) { |
3682 return m; | |
3683 } | |
3684 } | |
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3685 // None found, return null for the caller to handle. |
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3686 return NULL; |
0 | 3687 } |
3688 return m; | |
3689 } | |
3690 | |
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3691 jint InstanceKlass::get_cached_class_file_len() { |
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3692 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3693 } |
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3694 |
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3695 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3696 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3697 } |
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3698 |
0 | 3699 |
3700 // Construct a PreviousVersionNode entry for the array hung off | |
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3701 // the InstanceKlass. |
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3702 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3703 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3704 |
3705 _prev_constant_pool = prev_constant_pool; | |
3706 _prev_EMCP_methods = prev_EMCP_methods; | |
3707 } | |
3708 | |
3709 | |
3710 // Destroy a PreviousVersionNode | |
3711 PreviousVersionNode::~PreviousVersionNode() { | |
3712 if (_prev_constant_pool != NULL) { | |
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3713 _prev_constant_pool = NULL; |
0 | 3714 } |
3715 | |
3716 if (_prev_EMCP_methods != NULL) { | |
3717 delete _prev_EMCP_methods; | |
3718 } | |
3719 } | |
3720 | |
3721 // Construct a helper for walking the previous versions array | |
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3722 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3723 _thread = thread; |
0 | 3724 _previous_versions = ik->previous_versions(); |
3725 _current_index = 0; | |
3726 _current_p = NULL; | |
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3727 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3728 } |
3729 | |
3730 | |
3731 // Return the interesting information for the next previous version | |
3732 // of the klass. Returns NULL if there are no more previous versions. | |
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3733 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3734 if (_previous_versions == NULL) { |
3735 // no previous versions so nothing to return | |
3736 return NULL; | |
3737 } | |
3738 | |
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3739 _current_p = NULL; // reset to NULL |
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3740 _current_constant_pool_handle = NULL; |
0 | 3741 |
3742 int length = _previous_versions->length(); | |
3743 | |
3744 while (_current_index < length) { | |
3745 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3746 |
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3747 // Save a handle to the constant pool for this previous version, |
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3748 // which keeps all the methods from being deallocated. |
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3749 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3750 _current_p = pv_node; |
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3751 return pv_node; |
0 | 3752 } |
3753 | |
3754 return NULL; | |
3755 } // end next_previous_version() |