Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlass.cpp @ 23463:5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
Reviewed-by: mgerdin, vlivanov
author | stefank |
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date | Thu, 12 Nov 2015 09:53:17 +0100 |
parents | c2c7fed86a5e |
children | b5f3a471e646 50e62b688ddc |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2015, 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/jvmtiThreadState.hpp" |
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54 #include "prims/methodComparator.hpp" |
1972 | 55 #include "runtime/fieldDescriptor.hpp" |
56 #include "runtime/handles.inline.hpp" | |
57 #include "runtime/javaCalls.hpp" | |
58 #include "runtime/mutexLocker.hpp" | |
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59 #include "runtime/orderAccess.inline.hpp" |
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60 #include "runtime/thread.inline.hpp" |
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61 #include "services/classLoadingService.hpp" |
1972 | 62 #include "services/threadService.hpp" |
63 #include "utilities/dtrace.hpp" | |
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64 #include "utilities/macros.hpp" |
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65 #if INCLUDE_ALL_GCS |
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66 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 67 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
68 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
69 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
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70 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
1972 | 71 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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72 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 73 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
74 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
75 #include "oops/oop.pcgc.inline.hpp" | |
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76 #endif // INCLUDE_ALL_GCS |
1972 | 77 #ifdef COMPILER1 |
78 #include "c1/c1_Compiler.hpp" | |
79 #endif | |
0 | 80 |
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81 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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82 |
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83 #ifdef DTRACE_ENABLED |
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84 |
4006 | 85 #ifndef USDT2 |
86 | |
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87 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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88 char*, intptr_t, oop, intptr_t); |
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89 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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90 char*, intptr_t, oop, intptr_t, int); |
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91 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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92 char*, intptr_t, oop, intptr_t, int); |
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93 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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94 char*, intptr_t, oop, intptr_t, int); |
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95 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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96 char*, intptr_t, oop, intptr_t, int); |
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97 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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98 char*, intptr_t, oop, intptr_t, int); |
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99 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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100 char*, intptr_t, oop, intptr_t, int); |
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101 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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102 char*, intptr_t, oop, intptr_t, int); |
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103 |
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104 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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105 { \ |
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106 char* data = NULL; \ |
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107 int len = 0; \ |
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108 Symbol* name = (clss)->name(); \ |
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109 if (name != NULL) { \ |
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110 data = (char*)name->bytes(); \ |
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111 len = name->utf8_length(); \ |
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112 } \ |
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113 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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114 data, len, (void *)(clss)->class_loader(), thread_type); \ |
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115 } |
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116 |
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117 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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118 { \ |
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119 char* data = NULL; \ |
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120 int len = 0; \ |
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121 Symbol* name = (clss)->name(); \ |
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122 if (name != NULL) { \ |
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123 data = (char*)name->bytes(); \ |
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124 len = name->utf8_length(); \ |
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125 } \ |
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126 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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127 data, len, (void *)(clss)->class_loader(), thread_type, wait); \ |
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128 } |
4006 | 129 #else /* USDT2 */ |
130 | |
131 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
132 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
133 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
134 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
135 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
136 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
137 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
138 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
139 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
140 { \ | |
141 char* data = NULL; \ | |
142 int len = 0; \ | |
143 Symbol* name = (clss)->name(); \ | |
144 if (name != NULL) { \ | |
145 data = (char*)name->bytes(); \ | |
146 len = name->utf8_length(); \ | |
147 } \ | |
148 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
149 data, len, (clss)->class_loader(), thread_type); \ | |
150 } | |
151 | |
152 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
153 { \ | |
154 char* data = NULL; \ | |
155 int len = 0; \ | |
156 Symbol* name = (clss)->name(); \ | |
157 if (name != NULL) { \ | |
158 data = (char*)name->bytes(); \ | |
159 len = name->utf8_length(); \ | |
160 } \ | |
161 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
162 data, len, (clss)->class_loader(), thread_type, wait); \ | |
163 } | |
164 #endif /* USDT2 */ | |
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165 |
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166 #else // ndef DTRACE_ENABLED |
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167 |
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168 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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169 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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170 |
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171 #endif // ndef DTRACE_ENABLED |
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172 |
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173 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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174 |
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175 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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176 ClassLoaderData* loader_data, |
8031 | 177 int vtable_len, |
178 int itable_len, | |
179 int static_field_size, | |
180 int nonstatic_oop_map_size, | |
181 ReferenceType rt, | |
182 AccessFlags access_flags, | |
183 Symbol* name, | |
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184 Klass* super_klass, |
8031 | 185 bool is_anonymous, |
186 TRAPS) { | |
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187 |
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188 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 189 access_flags.is_interface(), is_anonymous); |
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190 |
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191 // Allocation |
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192 InstanceKlass* ik; |
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193 if (rt == REF_NONE) { |
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194 if (name == vmSymbols::java_lang_Class()) { |
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195 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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196 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 197 access_flags, is_anonymous); |
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198 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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199 (SystemDictionary::ClassLoader_klass_loaded() && |
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200 super_klass != NULL && |
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201 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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202 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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203 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 204 access_flags, is_anonymous); |
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205 } else { |
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206 // normal class |
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207 ik = new (loader_data, size, THREAD) InstanceKlass( |
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208 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 209 access_flags, is_anonymous); |
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210 } |
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211 } else { |
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212 // reference klass |
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213 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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214 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 215 access_flags, is_anonymous); |
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216 } |
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217 |
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218 // Check for pending exception before adding to the loader data and incrementing |
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219 // class count. Can get OOM here. |
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220 if (HAS_PENDING_EXCEPTION) { |
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221 return NULL; |
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222 } |
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223 |
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224 // Add all classes to our internal class loader list here, |
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225 // including classes in the bootstrap (NULL) class loader. |
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226 loader_data->add_class(ik); |
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227 |
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228 Atomic::inc(&_total_instanceKlass_count); |
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229 return ik; |
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230 } |
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231 |
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232 |
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233 // copy method ordering from resource area to Metaspace |
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234 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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235 if (m != NULL) { |
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236 // allocate a new array and copy contents (memcpy?) |
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237 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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238 for (int i = 0; i < m->length(); i++) { |
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239 _method_ordering->at_put(i, m->at(i)); |
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240 } |
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241 } else { |
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242 _method_ordering = Universe::the_empty_int_array(); |
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243 } |
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244 } |
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245 |
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246 // create a new array of vtable_indices for default methods |
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247 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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248 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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249 assert(default_vtable_indices() == NULL, "only create once"); |
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250 set_default_vtable_indices(vtable_indices); |
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251 return vtable_indices; |
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252 } |
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253 |
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254 InstanceKlass::InstanceKlass(int vtable_len, |
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255 int itable_len, |
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256 int static_field_size, |
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257 int nonstatic_oop_map_size, |
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258 ReferenceType rt, |
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259 AccessFlags access_flags, |
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260 bool is_anonymous) { |
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261 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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262 |
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263 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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264 access_flags.is_interface(), is_anonymous); |
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265 |
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266 set_vtable_length(vtable_len); |
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267 set_itable_length(itable_len); |
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268 set_static_field_size(static_field_size); |
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269 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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270 set_access_flags(access_flags); |
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271 _misc_flags = 0; // initialize to zero |
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272 set_is_anonymous(is_anonymous); |
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273 assert(size() == iksize, "wrong size for object"); |
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274 |
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275 set_array_klasses(NULL); |
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276 set_methods(NULL); |
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277 set_method_ordering(NULL); |
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278 set_default_methods(NULL); |
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279 set_default_vtable_indices(NULL); |
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280 set_local_interfaces(NULL); |
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281 set_transitive_interfaces(NULL); |
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282 init_implementor(); |
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283 set_fields(NULL, 0); |
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284 set_constants(NULL); |
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285 set_class_loader_data(NULL); |
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286 set_source_file_name_index(0); |
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287 set_source_debug_extension(NULL, 0); |
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288 set_array_name(NULL); |
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289 set_inner_classes(NULL); |
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290 set_static_oop_field_count(0); |
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291 set_nonstatic_field_size(0); |
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292 set_is_marked_dependent(false); |
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293 set_has_unloaded_dependent(false); |
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294 set_init_state(InstanceKlass::allocated); |
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295 set_init_thread(NULL); |
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296 set_reference_type(rt); |
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297 set_oop_map_cache(NULL); |
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298 set_jni_ids(NULL); |
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299 set_osr_nmethods_head(NULL); |
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300 set_breakpoints(NULL); |
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301 init_previous_versions(); |
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302 set_generic_signature_index(0); |
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303 release_set_methods_jmethod_ids(NULL); |
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304 set_annotations(NULL); |
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305 set_jvmti_cached_class_field_map(NULL); |
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306 set_initial_method_idnum(0); |
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307 _dependencies = NULL; |
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308 set_jvmti_cached_class_field_map(NULL); |
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309 set_cached_class_file(NULL); |
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310 set_initial_method_idnum(0); |
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311 set_minor_version(0); |
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312 set_major_version(0); |
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313 NOT_PRODUCT(_verify_count = 0;) |
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314 |
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315 // initialize the non-header words to zero |
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316 intptr_t* p = (intptr_t*)this; |
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317 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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318 p[index] = NULL_WORD; |
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319 } |
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320 |
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321 // Set temporary value until parseClassFile updates it with the real instance |
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322 // size. |
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323 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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324 } |
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325 |
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326 |
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327 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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328 Array<Method*>* methods) { |
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329 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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330 !methods->is_shared()) { |
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331 for (int i = 0; i < methods->length(); i++) { |
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332 Method* method = methods->at(i); |
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333 if (method == NULL) continue; // maybe null if error processing |
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334 // Only want to delete methods that are not executing for RedefineClasses. |
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335 // The previous version will point to them so they're not totally dangling |
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336 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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337 MetadataFactory::free_metadata(loader_data, method); |
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338 } |
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339 MetadataFactory::free_array<Method*>(loader_data, methods); |
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340 } |
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341 } |
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342 |
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343 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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344 Klass* super_klass, |
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345 Array<Klass*>* local_interfaces, |
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346 Array<Klass*>* transitive_interfaces) { |
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347 // Only deallocate transitive interfaces if not empty, same as super class |
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348 // or same as local interfaces. See code in parseClassFile. |
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349 Array<Klass*>* ti = transitive_interfaces; |
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350 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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351 // check that the interfaces don't come from super class |
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352 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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353 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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354 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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355 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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356 } |
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357 } |
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358 |
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359 // local interfaces can be empty |
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360 if (local_interfaces != Universe::the_empty_klass_array() && |
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361 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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362 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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363 } |
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364 } |
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365 |
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366 // This function deallocates the metadata and C heap pointers that the |
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367 // InstanceKlass points to. |
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368 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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369 |
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370 // Orphan the mirror first, CMS thinks it's still live. |
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371 if (java_mirror() != NULL) { |
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372 java_lang_Class::set_klass(java_mirror(), NULL); |
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373 } |
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374 |
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375 // Need to take this class off the class loader data list. |
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376 loader_data->remove_class(this); |
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377 |
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378 // The array_klass for this class is created later, after error handling. |
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379 // For class redefinition, we keep the original class so this scratch class |
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380 // doesn't have an array class. Either way, assert that there is nothing |
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381 // to deallocate. |
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382 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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383 |
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384 // Release C heap allocated data that this might point to, which includes |
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385 // reference counting symbol names. |
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386 release_C_heap_structures(); |
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387 |
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388 deallocate_methods(loader_data, methods()); |
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389 set_methods(NULL); |
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390 |
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391 if (method_ordering() != NULL && |
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392 method_ordering() != Universe::the_empty_int_array() && |
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393 !method_ordering()->is_shared()) { |
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394 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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395 } |
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396 set_method_ordering(NULL); |
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397 |
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398 // default methods can be empty |
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399 if (default_methods() != NULL && |
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400 default_methods() != Universe::the_empty_method_array() && |
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401 !default_methods()->is_shared()) { |
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402 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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403 } |
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404 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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405 set_default_methods(NULL); |
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406 |
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407 // default methods vtable indices can be empty |
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408 if (default_vtable_indices() != NULL && |
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409 !default_vtable_indices()->is_shared()) { |
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410 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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411 } |
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412 set_default_vtable_indices(NULL); |
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413 |
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414 |
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415 // This array is in Klass, but remove it with the InstanceKlass since |
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416 // this place would be the only caller and it can share memory with transitive |
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417 // interfaces. |
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418 if (secondary_supers() != NULL && |
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419 secondary_supers() != Universe::the_empty_klass_array() && |
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420 secondary_supers() != transitive_interfaces() && |
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421 !secondary_supers()->is_shared()) { |
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422 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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423 } |
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424 set_secondary_supers(NULL); |
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425 |
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426 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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427 set_transitive_interfaces(NULL); |
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428 set_local_interfaces(NULL); |
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429 |
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430 if (fields() != NULL && !fields()->is_shared()) { |
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431 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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432 } |
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433 set_fields(NULL, 0); |
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434 |
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435 // If a method from a redefined class is using this constant pool, don't |
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436 // delete it, yet. The new class's previous version will point to this. |
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437 if (constants() != NULL) { |
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438 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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439 if (!constants()->is_shared()) { |
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440 MetadataFactory::free_metadata(loader_data, constants()); |
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441 } |
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442 // Delete any cached resolution errors for the constant pool |
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443 SystemDictionary::delete_resolution_error(constants()); |
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444 |
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445 set_constants(NULL); |
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446 } |
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447 |
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448 if (inner_classes() != NULL && |
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449 inner_classes() != Universe::the_empty_short_array() && |
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450 !inner_classes()->is_shared()) { |
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451 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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452 } |
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453 set_inner_classes(NULL); |
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454 |
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455 // We should deallocate the Annotations instance if it's not in shared spaces. |
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456 if (annotations() != NULL && !annotations()->is_shared()) { |
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457 MetadataFactory::free_metadata(loader_data, annotations()); |
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458 } |
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459 set_annotations(NULL); |
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460 } |
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461 |
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462 bool InstanceKlass::should_be_initialized() const { |
0 | 463 return !is_initialized(); |
464 } | |
465 | |
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466 klassVtable* InstanceKlass::vtable() const { |
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467 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 468 } |
469 | |
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470 klassItable* InstanceKlass::itable() const { |
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471 return new klassItable(instanceKlassHandle(this)); |
0 | 472 } |
473 | |
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474 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 475 if (!EagerInitialization) return; |
476 | |
477 if (this->is_not_initialized()) { | |
478 // abort if the the class has a class initializer | |
479 if (this->class_initializer() != NULL) return; | |
480 | |
481 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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482 Klass* super = this->super(); |
0 | 483 if (super == NULL) return; |
484 | |
485 // abort if the super class should be initialized | |
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486 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 487 |
488 // call body to expose the this pointer | |
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489 instanceKlassHandle this_oop(thread, this); |
0 | 490 eager_initialize_impl(this_oop); |
491 } | |
492 } | |
493 | |
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494 // JVMTI spec thinks there are signers and protection domain in the |
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495 // instanceKlass. These accessors pretend these fields are there. |
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496 // The hprof specification also thinks these fields are in InstanceKlass. |
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497 oop InstanceKlass::protection_domain() const { |
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498 // return the protection_domain from the mirror |
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499 return java_lang_Class::protection_domain(java_mirror()); |
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500 } |
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501 |
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502 // To remove these from requires an incompatible change and CCC request. |
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503 objArrayOop InstanceKlass::signers() const { |
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504 // return the signers from the mirror |
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505 return java_lang_Class::signers(java_mirror()); |
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506 } |
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507 |
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508 oop InstanceKlass::init_lock() const { |
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509 // return the init lock from the mirror |
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510 oop lock = java_lang_Class::init_lock(java_mirror()); |
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511 // Prevent reordering with any access of initialization state |
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512 OrderAccess::loadload(); |
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513 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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514 "only fully initialized state can have a null lock"); |
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515 return lock; |
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516 } |
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517 |
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518 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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519 // threads to get this lock will see a null lock and will not lock. |
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520 // That's okay because they all check for initialized state after getting |
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521 // the lock and return. |
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522 void InstanceKlass::fence_and_clear_init_lock() { |
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523 // make sure previous stores are all done, notably the init_state. |
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524 OrderAccess::storestore(); |
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525 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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526 assert(!is_not_initialized(), "class must be initialized now"); |
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527 } |
0 | 528 |
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529 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 530 EXCEPTION_MARK; |
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531 oop init_lock = this_oop->init_lock(); |
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532 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 533 |
534 // abort if someone beat us to the initialization | |
535 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
536 | |
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537 ClassState old_state = this_oop->init_state(); |
0 | 538 link_class_impl(this_oop, true, THREAD); |
539 if (HAS_PENDING_EXCEPTION) { | |
540 CLEAR_PENDING_EXCEPTION; | |
541 // Abort if linking the class throws an exception. | |
542 | |
543 // Use a test to avoid redundantly resetting the state if there's | |
544 // no change. Set_init_state() asserts that state changes make | |
545 // progress, whereas here we might just be spinning in place. | |
546 if( old_state != this_oop->_init_state ) | |
547 this_oop->set_init_state (old_state); | |
548 } else { | |
549 // linking successfull, mark class as initialized | |
550 this_oop->set_init_state (fully_initialized); | |
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551 this_oop->fence_and_clear_init_lock(); |
0 | 552 // trace |
553 if (TraceClassInitialization) { | |
554 ResourceMark rm(THREAD); | |
555 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
556 } | |
557 } | |
558 } | |
559 | |
560 | |
561 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
562 // process. The step comments refers to the procedure described in that section. | |
563 // Note: implementation moved to static method to expose the this pointer. | |
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564 void InstanceKlass::initialize(TRAPS) { |
0 | 565 if (this->should_be_initialized()) { |
566 HandleMark hm(THREAD); | |
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567 instanceKlassHandle this_oop(THREAD, this); |
0 | 568 initialize_impl(this_oop, CHECK); |
569 // Note: at this point the class may be initialized | |
570 // OR it may be in the state of being initialized | |
571 // in case of recursive initialization! | |
572 } else { | |
573 assert(is_initialized(), "sanity check"); | |
574 } | |
575 } | |
576 | |
577 | |
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578 bool InstanceKlass::verify_code( |
0 | 579 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
580 // 1) Verify the bytecodes | |
581 Verifier::Mode mode = | |
582 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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583 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 584 } |
585 | |
586 | |
587 // Used exclusively by the shared spaces dump mechanism to prevent | |
588 // classes mapped into the shared regions in new VMs from appearing linked. | |
589 | |
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590 void InstanceKlass::unlink_class() { |
0 | 591 assert(is_linked(), "must be linked"); |
592 _init_state = loaded; | |
593 } | |
594 | |
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595 void InstanceKlass::link_class(TRAPS) { |
0 | 596 assert(is_loaded(), "must be loaded"); |
597 if (!is_linked()) { | |
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598 HandleMark hm(THREAD); |
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599 instanceKlassHandle this_oop(THREAD, this); |
0 | 600 link_class_impl(this_oop, true, CHECK); |
601 } | |
602 } | |
603 | |
604 // Called to verify that a class can link during initialization, without | |
605 // throwing a VerifyError. | |
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606 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 607 assert(is_loaded(), "must be loaded"); |
608 if (!is_linked()) { | |
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609 HandleMark hm(THREAD); |
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610 instanceKlassHandle this_oop(THREAD, this); |
0 | 611 link_class_impl(this_oop, false, CHECK_false); |
612 } | |
613 return is_linked(); | |
614 } | |
615 | |
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616 bool InstanceKlass::link_class_impl( |
0 | 617 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
618 // check for error state | |
619 if (this_oop->is_in_error_state()) { | |
620 ResourceMark rm(THREAD); | |
621 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
622 this_oop->external_name(), false); | |
623 } | |
624 // return if already verified | |
625 if (this_oop->is_linked()) { | |
626 return true; | |
627 } | |
628 | |
629 // Timing | |
630 // timer handles recursion | |
631 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
632 JavaThread* jt = (JavaThread*)THREAD; | |
633 | |
634 // link super class before linking this class | |
635 instanceKlassHandle super(THREAD, this_oop->super()); | |
636 if (super.not_null()) { | |
637 if (super->is_interface()) { // check if super class is an interface | |
638 ResourceMark rm(THREAD); | |
639 Exceptions::fthrow( | |
640 THREAD_AND_LOCATION, | |
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641 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 642 "class %s has interface %s as super class", |
643 this_oop->external_name(), | |
644 super->external_name() | |
645 ); | |
646 return false; | |
647 } | |
648 | |
649 link_class_impl(super, throw_verifyerror, CHECK_false); | |
650 } | |
651 | |
652 // link all interfaces implemented by this class before linking this class | |
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653 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 654 int num_interfaces = interfaces->length(); |
655 for (int index = 0; index < num_interfaces; index++) { | |
656 HandleMark hm(THREAD); | |
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657 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 658 link_class_impl(ih, throw_verifyerror, CHECK_false); |
659 } | |
660 | |
661 // in case the class is linked in the process of linking its superclasses | |
662 if (this_oop->is_linked()) { | |
663 return true; | |
664 } | |
665 | |
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666 // trace only the link time for this klass that includes |
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667 // the verification time |
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668 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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669 ClassLoader::perf_class_link_selftime(), |
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670 ClassLoader::perf_classes_linked(), |
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671 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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672 jt->get_thread_stat()->perf_timers_addr(), |
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673 PerfClassTraceTime::CLASS_LINK); |
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674 |
0 | 675 // verification & rewriting |
676 { | |
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677 oop init_lock = this_oop->init_lock(); |
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678 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 679 // rewritten will have been set if loader constraint error found |
680 // on an earlier link attempt | |
681 // don't verify or rewrite if already rewritten | |
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682 |
0 | 683 if (!this_oop->is_linked()) { |
684 if (!this_oop->is_rewritten()) { | |
685 { | |
686 // Timer includes any side effects of class verification (resolution, | |
687 // etc), but not recursive entry into verify_code(). | |
875
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688 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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689 ClassLoader::perf_class_verify_selftime(), |
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690 ClassLoader::perf_classes_verified(), |
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691 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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692 jt->get_thread_stat()->perf_timers_addr(), |
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693 PerfClassTraceTime::CLASS_VERIFY); |
0 | 694 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
695 if (!verify_ok) { | |
696 return false; | |
697 } | |
698 } | |
699 | |
700 // Just in case a side-effect of verify linked this class already | |
701 // (which can sometimes happen since the verifier loads classes | |
702 // using custom class loaders, which are free to initialize things) | |
703 if (this_oop->is_linked()) { | |
704 return true; | |
705 } | |
706 | |
707 // also sets rewritten | |
708 this_oop->rewrite_class(CHECK_false); | |
709 } | |
710 | |
3748 | 711 // relocate jsrs and link methods after they are all rewritten |
7459
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712 this_oop->link_methods(CHECK_false); |
3748 | 713 |
0 | 714 // Initialize the vtable and interface table after |
715 // methods have been rewritten since rewrite may | |
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716 // fabricate new Method*s. |
0 | 717 // also does loader constraint checking |
718 if (!this_oop()->is_shared()) { | |
719 ResourceMark rm(THREAD); | |
720 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
721 this_oop->itable()->initialize_itable(true, CHECK_false); | |
722 } | |
723 #ifdef ASSERT | |
724 else { | |
725 ResourceMark rm(THREAD); | |
726 this_oop->vtable()->verify(tty, true); | |
727 // In case itable verification is ever added. | |
728 // this_oop->itable()->verify(tty, true); | |
729 } | |
730 #endif | |
731 this_oop->set_init_state(linked); | |
732 if (JvmtiExport::should_post_class_prepare()) { | |
733 Thread *thread = THREAD; | |
734 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
735 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
736 } | |
737 } | |
738 } | |
739 return true; | |
740 } | |
741 | |
742 | |
743 // Rewrite the byte codes of all of the methods of a class. | |
744 // The rewriter must be called exactly once. Rewriting must happen after | |
745 // verification but before the first method of the class is executed. | |
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746 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 747 assert(is_loaded(), "must be loaded"); |
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748 instanceKlassHandle this_oop(THREAD, this); |
0 | 749 if (this_oop->is_rewritten()) { |
750 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
751 return; | |
752 } | |
3748 | 753 Rewriter::rewrite(this_oop, CHECK); |
0 | 754 this_oop->set_rewritten(); |
755 } | |
756 | |
3748 | 757 // Now relocate and link method entry points after class is rewritten. |
758 // This is outside is_rewritten flag. In case of an exception, it can be | |
759 // executed more than once. | |
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760 void InstanceKlass::link_methods(TRAPS) { |
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761 int len = methods()->length(); |
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762 for (int i = len-1; i >= 0; i--) { |
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763 methodHandle m(THREAD, methods()->at(i)); |
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764 |
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765 // Set up method entry points for compiler and interpreter . |
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766 m->link_method(m, CHECK); |
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767 |
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768 // This is for JVMTI and unrelated to relocator but the last thing we do |
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769 #ifdef ASSERT |
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770 if (StressMethodComparator) { |
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771 ResourceMark rm(THREAD); |
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772 static int nmc = 0; |
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773 for (int j = i; j >= 0 && j >= i-4; j--) { |
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774 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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775 bool z = MethodComparator::methods_EMCP(m(), |
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776 methods()->at(j)); |
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777 if (j == i && !z) { |
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778 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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779 assert(z, "method must compare equal to itself"); |
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780 } |
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781 } |
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782 } |
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783 #endif //ASSERT |
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784 } |
3748 | 785 } |
786 | |
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787 // Eagerly initialize superinterfaces that declare default methods (concrete instance: any access) |
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788 void InstanceKlass::initialize_super_interfaces(instanceKlassHandle this_oop, TRAPS) { |
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789 if (this_oop->has_default_methods()) { |
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790 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { |
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791 Klass* iface = this_oop->local_interfaces()->at(i); |
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792 InstanceKlass* ik = InstanceKlass::cast(iface); |
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793 if (ik->should_be_initialized()) { |
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794 if (ik->has_default_methods()) { |
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795 ik->initialize_super_interfaces(ik, THREAD); |
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796 } |
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797 // Only initialize() interfaces that "declare" concrete methods. |
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798 // has_default_methods drives searching superinterfaces since it |
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799 // means has_default_methods in its superinterface hierarchy |
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800 if (!HAS_PENDING_EXCEPTION && ik->declares_default_methods()) { |
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801 ik->initialize(THREAD); |
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802 } |
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803 if (HAS_PENDING_EXCEPTION) { |
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804 Handle e(THREAD, PENDING_EXCEPTION); |
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805 CLEAR_PENDING_EXCEPTION; |
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806 { |
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807 EXCEPTION_MARK; |
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808 // Locks object, set state, and notify all waiting threads |
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809 this_oop->set_initialization_state_and_notify( |
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810 initialization_error, THREAD); |
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811 |
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812 // ignore any exception thrown, superclass initialization error is |
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813 // thrown below |
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814 CLEAR_PENDING_EXCEPTION; |
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815 } |
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816 THROW_OOP(e()); |
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817 } |
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818 } |
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819 } |
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820 } |
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821 } |
0 | 822 |
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823 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 824 // Make sure klass is linked (verified) before initialization |
825 // A class could already be verified, since it has been reflected upon. | |
826 this_oop->link_class(CHECK); | |
827 | |
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828 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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829 |
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830 bool wait = false; |
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831 |
0 | 832 // refer to the JVM book page 47 for description of steps |
833 // Step 1 | |
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834 { |
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835 oop init_lock = this_oop->init_lock(); |
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836 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 837 |
838 Thread *self = THREAD; // it's passed the current thread | |
839 | |
840 // Step 2 | |
841 // If we were to use wait() instead of waitInterruptibly() then | |
842 // we might end up throwing IE from link/symbol resolution sites | |
843 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
844 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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845 wait = true; |
0 | 846 ol.waitUninterruptibly(CHECK); |
847 } | |
848 | |
849 // Step 3 | |
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850 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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851 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 852 return; |
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853 } |
0 | 854 |
855 // Step 4 | |
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856 if (this_oop->is_initialized()) { |
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857 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 858 return; |
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859 } |
0 | 860 |
861 // Step 5 | |
862 if (this_oop->is_in_error_state()) { | |
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863 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 864 ResourceMark rm(THREAD); |
865 const char* desc = "Could not initialize class "; | |
866 const char* className = this_oop->external_name(); | |
867 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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868 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 869 if (NULL == message) { |
870 // Out of memory: can't create detailed error message | |
871 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
872 } else { | |
873 jio_snprintf(message, msglen, "%s%s", desc, className); | |
874 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
875 } | |
876 } | |
877 | |
878 // Step 6 | |
879 this_oop->set_init_state(being_initialized); | |
880 this_oop->set_init_thread(self); | |
881 } | |
882 | |
883 // Step 7 | |
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884 Klass* super_klass = this_oop->super(); |
6983 | 885 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
886 super_klass->initialize(THREAD); | |
0 | 887 |
888 if (HAS_PENDING_EXCEPTION) { | |
889 Handle e(THREAD, PENDING_EXCEPTION); | |
890 CLEAR_PENDING_EXCEPTION; | |
891 { | |
892 EXCEPTION_MARK; | |
893 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
894 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
895 } | |
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896 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 897 THROW_OOP(e()); |
898 } | |
899 } | |
900 | |
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901 // Recursively initialize any superinterfaces that declare default methods |
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902 // Only need to recurse if has_default_methods which includes declaring and |
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903 // inheriting default methods |
6934 | 904 if (this_oop->has_default_methods()) { |
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905 this_oop->initialize_super_interfaces(this_oop, CHECK); |
6934 | 906 } |
907 | |
0 | 908 // Step 8 |
909 { | |
910 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
911 JavaThread* jt = (JavaThread*)THREAD; | |
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912 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 913 // Timer includes any side effects of class initialization (resolution, |
914 // etc), but not recursive entry into call_class_initializer(). | |
875
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915 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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916 ClassLoader::perf_class_init_selftime(), |
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917 ClassLoader::perf_classes_inited(), |
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918 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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919 jt->get_thread_stat()->perf_timers_addr(), |
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920 PerfClassTraceTime::CLASS_CLINIT); |
0 | 921 this_oop->call_class_initializer(THREAD); |
922 } | |
923 | |
924 // Step 9 | |
925 if (!HAS_PENDING_EXCEPTION) { | |
926 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
927 { ResourceMark rm(THREAD); | |
928 debug_only(this_oop->vtable()->verify(tty, true);) | |
929 } | |
930 } | |
931 else { | |
932 // Step 10 and 11 | |
933 Handle e(THREAD, PENDING_EXCEPTION); | |
934 CLEAR_PENDING_EXCEPTION; | |
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935 // JVMTI has already reported the pending exception |
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936 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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937 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 938 { |
939 EXCEPTION_MARK; | |
940 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
941 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
23007
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942 // JVMTI has already reported the pending exception |
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943 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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944 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 945 } |
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946 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 947 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 948 THROW_OOP(e()); |
949 } else { | |
950 JavaCallArguments args(e); | |
2177
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951 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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952 vmSymbols::throwable_void_signature(), |
0 | 953 &args); |
954 } | |
955 } | |
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956 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 957 } |
958 | |
959 | |
960 // Note: implementation moved to static method to expose the this pointer. | |
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961 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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962 instanceKlassHandle kh(THREAD, this); |
0 | 963 set_initialization_state_and_notify_impl(kh, state, CHECK); |
964 } | |
965 | |
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966 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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967 oop init_lock = this_oop->init_lock(); |
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968 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 969 this_oop->set_init_state(state); |
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970 this_oop->fence_and_clear_init_lock(); |
0 | 971 ol.notify_all(CHECK); |
972 } | |
973 | |
5998
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974 // The embedded _implementor field can only record one implementor. |
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975 // When there are more than one implementors, the _implementor field |
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976 // is set to the interface Klass* itself. Following are the possible |
5998
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977 // values for the _implementor field: |
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978 // NULL - no implementor |
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979 // implementor Klass* - one implementor |
5998
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980 // self - more than one implementor |
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981 // |
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982 // The _implementor field only exists for interfaces. |
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983 void InstanceKlass::add_implementor(Klass* k) { |
0 | 984 assert(Compile_lock->owned_by_self(), ""); |
5998
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985 assert(is_interface(), "not interface"); |
0 | 986 // Filter out my subinterfaces. |
987 // (Note: Interfaces are never on the subklass list.) | |
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988 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 989 |
990 // Filter out subclasses whose supers already implement me. | |
991 // (Note: CHA must walk subclasses of direct implementors | |
992 // in order to locate indirect implementors.) | |
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993 Klass* sk = InstanceKlass::cast(k)->super(); |
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994 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 995 // We only need to check one immediate superclass, since the |
996 // implements_interface query looks at transitive_interfaces. | |
997 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
998 return; | |
999 | |
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1000 Klass* ik = implementor(); |
5998
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1001 if (ik == NULL) { |
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1002 set_implementor(k); |
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1003 } else if (ik != this) { |
5998
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1004 // There is already an implementor. Use itself as an indicator of |
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1005 // more than one implementors. |
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1006 set_implementor(this); |
0 | 1007 } |
1008 | |
1009 // The implementor also implements the transitive_interfaces | |
1010 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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1011 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 1012 } |
1013 } | |
1014 | |
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1015 void InstanceKlass::init_implementor() { |
5998
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1016 if (is_interface()) { |
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1017 set_implementor(NULL); |
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1018 } |
0 | 1019 } |
1020 | |
1021 | |
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1022 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1023 // link this class into the implementors list of every interface it implements |
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1024 Klass* this_as_klass_oop = this; |
0 | 1025 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1026 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1027 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1028 assert(interf->is_interface(), "expected interface"); |
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1029 interf->add_implementor(this_as_klass_oop); |
0 | 1030 } |
1031 } | |
1032 | |
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1033 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1034 if (is_interface()) |
1035 return false; | |
1036 else | |
1037 return Klass::can_be_primary_super_slow(); | |
1038 } | |
1039 | |
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1040 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1041 // The secondaries are the implemented interfaces. |
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1042 InstanceKlass* ik = InstanceKlass::cast(this); |
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1043 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1044 int num_secondaries = num_extra_slots + interfaces->length(); |
1045 if (num_secondaries == 0) { | |
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1046 // Must share this for correct bootstrapping! |
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1047 set_secondary_supers(Universe::the_empty_klass_array()); |
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1048 return NULL; |
0 | 1049 } else if (num_extra_slots == 0) { |
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1050 // The secondary super list is exactly the same as the transitive interfaces. |
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1051 // Redefine classes has to be careful not to delete this! |
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1052 set_secondary_supers(interfaces); |
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1053 return NULL; |
0 | 1054 } else { |
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1055 // Copy transitive interfaces to a temporary growable array to be constructed |
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1056 // into the secondary super list with extra slots. |
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1057 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1058 for (int i = 0; i < interfaces->length(); i++) { |
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1059 secondaries->push(interfaces->at(i)); |
0 | 1060 } |
1061 return secondaries; | |
1062 } | |
1063 } | |
1064 | |
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1065 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1066 if (k->is_interface()) { |
0 | 1067 return implements_interface(k); |
1068 } else { | |
1069 return Klass::compute_is_subtype_of(k); | |
1070 } | |
1071 } | |
1072 | |
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1073 bool InstanceKlass::implements_interface(Klass* k) const { |
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1074 if (this == k) return true; |
6983 | 1075 assert(k->is_interface(), "should be an interface class"); |
0 | 1076 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1077 if (transitive_interfaces()->at(i) == k) { |
0 | 1078 return true; |
1079 } | |
1080 } | |
1081 return false; | |
1082 } | |
1083 | |
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1084 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1085 // Verify direct super interface |
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1086 if (this == k) return true; |
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1087 assert(k->is_interface(), "should be an interface class"); |
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1088 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1089 if (local_interfaces()->at(i) == k) { |
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1090 return true; |
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1091 } |
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1092 } |
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1093 return false; |
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1094 } |
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1095 |
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1096 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1097 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1098 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1099 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1100 JvmtiExport::post_array_size_exhausted(); |
0 | 1101 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1102 } | |
1103 int size = objArrayOopDesc::object_size(length); | |
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1104 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1105 KlassHandle h_ak (THREAD, ak); |
1106 objArrayOop o = | |
1107 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1108 return o; | |
1109 } | |
1110 | |
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1111 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1112 if (TraceFinalizerRegistration) { |
1113 tty->print("Registered "); | |
1114 i->print_value_on(tty); | |
1115 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1116 } | |
1117 instanceHandle h_i(THREAD, i); | |
1118 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1119 JavaValue result(T_VOID); | |
1120 JavaCallArguments args(h_i); | |
1121 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1122 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1123 return h_i(); | |
1124 } | |
1125 | |
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1126 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1127 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1128 int size = size_helper(); // Query before forming handle. | |
1129 | |
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1130 KlassHandle h_k(THREAD, this); |
0 | 1131 |
1132 instanceOop i; | |
1133 | |
1134 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1135 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1136 i = register_finalizer(i, CHECK_NULL); | |
1137 } | |
1138 return i; | |
1139 } | |
1140 | |
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1141 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1142 if (is_interface() || is_abstract()) { |
1143 ResourceMark rm(THREAD); | |
1144 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1145 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1146 } | |
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1147 if (this == SystemDictionary::Class_klass()) { |
0 | 1148 ResourceMark rm(THREAD); |
1149 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1150 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1151 } | |
1152 } | |
1153 | |
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1154 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1155 instanceKlassHandle this_oop(THREAD, this); |
0 | 1156 return array_klass_impl(this_oop, or_null, n, THREAD); |
1157 } | |
1158 | |
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1159 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1160 if (this_oop->array_klasses() == NULL) { |
1161 if (or_null) return NULL; | |
1162 | |
1163 ResourceMark rm; | |
1164 JavaThread *jt = (JavaThread *)THREAD; | |
1165 { | |
1166 // Atomic creation of array_klasses | |
1167 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1168 MutexLocker ma(MultiArray_lock, THREAD); | |
1169 | |
1170 // Check if update has already taken place | |
1171 if (this_oop->array_klasses() == NULL) { | |
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1172 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1173 this_oop->set_array_klasses(k); |
1174 } | |
1175 } | |
1176 } | |
1177 // _this will always be set at this point | |
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1178 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1179 if (or_null) { |
1180 return oak->array_klass_or_null(n); | |
1181 } | |
1182 return oak->array_klass(n, CHECK_NULL); | |
1183 } | |
1184 | |
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1185 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1186 return array_klass_impl(or_null, 1, THREAD); |
1187 } | |
1188 | |
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1189 void InstanceKlass::call_class_initializer(TRAPS) { |
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1190 instanceKlassHandle ik (THREAD, this); |
0 | 1191 call_class_initializer_impl(ik, THREAD); |
1192 } | |
1193 | |
1194 static int call_class_initializer_impl_counter = 0; // for debugging | |
1195 | |
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1196 Method* InstanceKlass::class_initializer() { |
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1197 Method* clinit = find_method( |
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1198 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1199 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1200 return clinit; |
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1201 } |
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1202 return NULL; |
0 | 1203 } |
1204 | |
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1205 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1206 if (ReplayCompiles && |
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1207 (ReplaySuppressInitializers == 1 || |
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1208 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1209 // Hide the existence of the initializer for the purpose of replaying the compile |
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1210 return; |
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1211 } |
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1212 |
0 | 1213 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1214 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1215 if (TraceClassInitialization) { | |
1216 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1217 this_oop->name()->print_value(); | |
1218 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1219 } | |
1220 if (h_method() != NULL) { | |
1221 JavaCallArguments args; // No arguments | |
1222 JavaValue result(T_VOID); | |
1223 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1224 } | |
1225 } | |
1226 | |
1227 | |
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1228 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1229 InterpreterOopMap* entry_for) { |
1230 // Dirty read, then double-check under a lock. | |
1231 if (_oop_map_cache == NULL) { | |
1232 // Otherwise, allocate a new one. | |
1233 MutexLocker x(OopMapCacheAlloc_lock); | |
1234 // First time use. Allocate a cache in C heap | |
1235 if (_oop_map_cache == NULL) { | |
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1236 // Release stores from OopMapCache constructor before assignment |
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1237 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1238 // required memory barrier only because of the volatile |
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1239 // qualifier of _oop_map_cache. |
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1240 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1241 } |
1242 } | |
1243 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1244 _oop_map_cache->lookup(method, bci, entry_for); | |
1245 } | |
1246 | |
1247 | |
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1248 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1249 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1250 Symbol* f_name = fs.name(); |
1251 Symbol* f_sig = fs.signature(); | |
0 | 1252 if (f_name == name && f_sig == sig) { |
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1253 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1254 return true; |
1255 } | |
1256 } | |
1257 return false; | |
1258 } | |
1259 | |
1260 | |
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1261 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1262 const int n = local_interfaces()->length(); |
1263 for (int i = 0; i < n; i++) { | |
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1264 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1265 assert(intf1->is_interface(), "just checking type"); |
0 | 1266 // search for field in current interface |
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1267 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1268 assert(fd->is_static(), "interface field must be static"); |
1269 return intf1; | |
1270 } | |
1271 // search for field in direct superinterfaces | |
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1272 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1273 if (intf2 != NULL) return intf2; |
1274 } | |
1275 // otherwise field lookup fails | |
1276 return NULL; | |
1277 } | |
1278 | |
1279 | |
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1280 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1281 // search order according to newest JVM spec (5.4.3.2, p.167). |
1282 // 1) search for field in current klass | |
1283 if (find_local_field(name, sig, fd)) { | |
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1284 return const_cast<InstanceKlass*>(this); |
0 | 1285 } |
1286 // 2) search for field recursively in direct superinterfaces | |
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1287 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1288 if (intf != NULL) return intf; |
1289 } | |
1290 // 3) apply field lookup recursively if superclass exists | |
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1291 { Klass* supr = super(); |
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1292 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1293 } |
1294 // 4) otherwise field lookup fails | |
1295 return NULL; | |
1296 } | |
1297 | |
1298 | |
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1299 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1300 // search order according to newest JVM spec (5.4.3.2, p.167). |
1301 // 1) search for field in current klass | |
1302 if (find_local_field(name, sig, fd)) { | |
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1303 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1304 } |
1305 // 2) search for field recursively in direct superinterfaces | |
1306 if (is_static) { | |
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1307 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1308 if (intf != NULL) return intf; |
1309 } | |
1310 // 3) apply field lookup recursively if superclass exists | |
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1311 { Klass* supr = super(); |
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1312 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1313 } |
1314 // 4) otherwise field lookup fails | |
1315 return NULL; | |
1316 } | |
1317 | |
1318 | |
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1319 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1320 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1321 if (fs.offset() == offset) { |
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1322 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1323 if (fd->is_static() == is_static) return true; |
1324 } | |
1325 } | |
1326 return false; | |
1327 } | |
1328 | |
1329 | |
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1330 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1331 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1332 while (klass != NULL) { |
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1333 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1334 return true; |
1335 } | |
6983 | 1336 klass = klass->super(); |
0 | 1337 } |
1338 return false; | |
1339 } | |
1340 | |
1341 | |
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1342 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1343 int len = methods()->length(); |
1344 for (int index = 0; index < len; index++) { | |
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1345 Method* m = methods()->at(index); |
0 | 1346 assert(m->is_method(), "must be method"); |
1347 f(m); | |
1348 } | |
1349 } | |
1350 | |
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1351 |
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1352 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1353 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1354 if (fs.access_flags().is_static()) { | |
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1355 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1356 cl->do_field(&fd); |
1357 } | |
0 | 1358 } |
1359 } | |
1360 | |
1361 | |
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1362 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1363 instanceKlassHandle h_this(THREAD, this); |
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1364 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1365 } |
1366 | |
1367 | |
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1368 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1369 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1370 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1371 if (fs.access_flags().is_static()) { |
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1372 fieldDescriptor& fd = fs.field_descriptor(); |
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1373 f(&fd, mirror, CHECK); |
3938 | 1374 } |
0 | 1375 } |
1376 } | |
1377 | |
1378 | |
44
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1379 static int compare_fields_by_offset(int* a, int* b) { |
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1380 return a[0] - b[0]; |
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1381 } |
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1382 |
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1383 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1384 InstanceKlass* super = superklass(); |
0 | 1385 if (super != NULL) { |
1386 super->do_nonstatic_fields(cl); | |
1387 } | |
44
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1388 fieldDescriptor fd; |
3938 | 1389 int length = java_fields_count(); |
44
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1390 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1391 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1392 int j = 0; |
3938 | 1393 for (int i = 0; i < length; i += 1) { |
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1394 fd.reinitialize(this, i); |
44
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1395 if (!fd.is_static()) { |
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1396 fields_sorted[j + 0] = fd.offset(); |
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1397 fields_sorted[j + 1] = i; |
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1398 j += 2; |
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1399 } |
0 | 1400 } |
44
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1401 if (j > 0) { |
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1402 length = j; |
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1403 // _sort_Fn is defined in growableArray.hpp. |
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1404 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1405 for (int i = 0; i < length; i += 2) { |
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1406 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1407 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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|
1408 cl->do_field(&fd); |
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|
1409 } |
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|
1410 } |
6197 | 1411 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1412 } |
1413 | |
1414 | |
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1415 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1416 if (array_klasses() != NULL) |
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1417 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1418 } |
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1419 |
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1420 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1421 if (array_klasses() != NULL) |
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1422 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1423 } |
1424 | |
1425 #ifdef ASSERT | |
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1426 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1427 int len = methods->length(); |
1428 for (int index = 0; index < len; index++) { | |
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1429 Method* m = methods->at(index); |
0 | 1430 assert(m->is_method(), "must be method"); |
1431 if (m->signature() == signature && m->name() == name) { | |
1432 return index; | |
1433 } | |
1434 } | |
1435 return -1; | |
1436 } | |
1437 #endif | |
1438 | |
6934 | 1439 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1440 int len = methods->length(); |
1441 // methods are sorted, so do binary search | |
1442 int l = 0; | |
1443 int h = len - 1; | |
1444 while (l <= h) { | |
1445 int mid = (l + h) >> 1; | |
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1446 Method* m = methods->at(mid); |
0 | 1447 assert(m->is_method(), "must be method"); |
1448 int res = m->name()->fast_compare(name); | |
1449 if (res == 0) { | |
6934 | 1450 return mid; |
0 | 1451 } else if (res < 0) { |
1452 l = mid + 1; | |
1453 } else { | |
1454 h = mid - 1; | |
1455 } | |
1456 } | |
6934 | 1457 return -1; |
1458 } | |
1459 | |
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1460 // find_method looks up the name/signature in the local methods array |
6934 | 1461 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1462 return find_method_impl(name, signature, false); |
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1463 } |
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1464 |
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1465 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
20785 | 1466 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass, false); |
6934 | 1467 } |
1468 | |
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1469 // find_instance_method looks up the name/signature in the local methods array |
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|
1470 // and skips over static methods |
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|
1471 Method* InstanceKlass::find_instance_method( |
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1472 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
20785 | 1473 Method* meth = InstanceKlass::find_method_impl(methods, name, signature, false, true); |
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1474 return meth; |
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|
1475 } |
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|
1476 |
20785 | 1477 // find_instance_method looks up the name/signature in the local methods array |
1478 // and skips over static methods | |
1479 Method* InstanceKlass::find_instance_method(Symbol* name, Symbol* signature) { | |
1480 return InstanceKlass::find_instance_method(methods(), name, signature); | |
1481 } | |
1482 | |
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1483 // find_method looks up the name/signature in the local methods array |
6934 | 1484 Method* InstanceKlass::find_method( |
1485 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
20785 | 1486 return InstanceKlass::find_method_impl(methods, name, signature, false, false); |
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1487 } |
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1488 |
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|
1489 Method* InstanceKlass::find_method_impl( |
20785 | 1490 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1491 int hit = find_method_index(methods, name, signature, skipping_overpass, skipping_static); | |
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1492 return hit >= 0 ? methods->at(hit): NULL; |
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|
1493 } |
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|
1494 |
20785 | 1495 bool InstanceKlass::method_matches(Method* m, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1496 return (m->signature() == signature) && | |
1497 (!skipping_overpass || !m->is_overpass()) && | |
1498 (!skipping_static || !m->is_static()); | |
1499 } | |
1500 | |
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|
1501 // Used directly for default_methods to find the index into the |
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|
1502 // default_vtable_indices, and indirectly by find_method |
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|
1503 // find_method_index looks in the local methods array to return the index |
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|
1504 // of the matching name/signature. If, overpass methods are being ignored, |
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|
1505 // the search continues to find a potential non-overpass match. This capability |
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|
1506 // is important during method resolution to prefer a static method, for example, |
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|
1507 // over an overpass method. |
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|
1508 int InstanceKlass::find_method_index( |
20785 | 1509 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
6934 | 1510 int hit = binary_search(methods, name); |
1511 if (hit != -1) { | |
1512 Method* m = methods->at(hit); | |
20785 | 1513 |
6934 | 1514 // Do linear search to find matching signature. First, quick check |
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|
1515 // for common case, ignoring overpasses if requested. |
20785 | 1516 if (method_matches(m, signature, skipping_overpass, skipping_static)) return hit; |
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|
1517 |
6934 | 1518 // search downwards through overloaded methods |
1519 int i; | |
1520 for (i = hit - 1; i >= 0; --i) { | |
1521 Method* m = methods->at(i); | |
1522 assert(m->is_method(), "must be method"); | |
1523 if (m->name() != name) break; | |
20785 | 1524 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1525 } |
1526 // search upwards | |
1527 for (i = hit + 1; i < methods->length(); ++i) { | |
1528 Method* m = methods->at(i); | |
1529 assert(m->is_method(), "must be method"); | |
1530 if (m->name() != name) break; | |
20785 | 1531 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1532 } |
1533 // not found | |
0 | 1534 #ifdef ASSERT |
20785 | 1535 int index = skipping_overpass || skipping_static ? -1 : linear_search(methods, name, signature); |
6934 | 1536 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1537 #endif |
6934 | 1538 } |
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1539 return -1; |
0 | 1540 } |
6934 | 1541 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1542 return find_method_by_name(methods(), name, end); | |
1543 } | |
1544 | |
1545 int InstanceKlass::find_method_by_name( | |
1546 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1547 assert(end_ptr != NULL, "just checking"); | |
1548 int start = binary_search(methods, name); | |
1549 int end = start + 1; | |
1550 if (start != -1) { | |
1551 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1552 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1553 *end_ptr = end; | |
1554 return start; | |
1555 } | |
1556 return -1; | |
1557 } | |
1558 | |
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|
1559 // uncached_lookup_method searches both the local class methods array and all |
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
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|
1560 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1561 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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|
1562 MethodLookupMode lookup_mode = mode; |
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1563 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1564 while (klass != NULL) { |
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|
1565 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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|
1566 if (method != NULL) { |
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|
1567 return method; |
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|
1568 } |
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1569 klass = InstanceKlass::cast(klass)->super(); |
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|
1570 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1571 } |
1572 return NULL; | |
1573 } | |
1574 | |
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|
1575 #ifdef ASSERT |
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|
1576 // search through class hierarchy and return true if this class or |
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|
1577 // one of the superclasses was redefined |
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|
1578 bool InstanceKlass::has_redefined_this_or_super() const { |
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|
1579 const InstanceKlass* klass = this; |
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|
1580 while (klass != NULL) { |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
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diff
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|
1581 if (klass->has_been_redefined()) { |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
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|
1582 return true; |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
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|
1583 } |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
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23175
diff
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|
1584 klass = InstanceKlass::cast(klass->super()); |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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23175
diff
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|
1585 } |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
dsamersoff
parents:
23175
diff
changeset
|
1586 return false; |
c2c7fed86a5e
6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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23175
diff
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|
1587 } |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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diff
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|
1588 #endif |
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6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
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|
1589 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1590 // lookup a method in the default methods list then in all transitive interfaces |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
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|
1591 // Do NOT return private or static methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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12811
diff
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|
1592 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
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|
1593 Symbol* signature) const { |
12828
d25557d03ec0
8026185: nsk/jvmit/GetMethodDeclaringClass/declcls001 failed
acorn
parents:
12823
diff
changeset
|
1594 Method* m = NULL; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1595 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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12811
diff
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|
1596 m = find_method(default_methods(), name, signature); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
1597 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1598 // Look up interfaces |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
12811
diff
changeset
|
1599 if (m == NULL) { |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
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17883
diff
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|
1600 m = lookup_method_in_all_interfaces(name, signature, normal); |
12823
ac9cb1d5a202
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diff
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|
1601 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1602 return m; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
1603 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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diff
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|
1604 |
0 | 1605 // lookup a method in all the interfaces that this class implements |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
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|
1606 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
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|
1607 // They should only be found in the initial InterfaceMethodRef |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1608 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13438
diff
changeset
|
1609 Symbol* signature, |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
parents:
17883
diff
changeset
|
1610 MethodLookupMode mode) const { |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1611 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1612 int num_ifs = all_ifs->length(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1613 InstanceKlass *ik = NULL; |
0 | 1614 for (int i = 0; i < num_ifs; i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1615 ik = InstanceKlass::cast(all_ifs->at(i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1616 Method* m = ik->lookup_method(name, signature); |
17464
5832cdaf89c6
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13438
diff
changeset
|
1617 if (m != NULL && m->is_public() && !m->is_static() && |
17889
386dd1c71858
8033150: invokestatic: IncompatibleClassChangeError trying to invoke static method from a parent in presence of conflicting defaults.
lfoltan
parents:
17883
diff
changeset
|
1618 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1619 return m; |
1620 } | |
1621 } | |
1622 return NULL; | |
1623 } | |
1624 | |
1625 /* jni_id_for_impl for jfieldIds only */ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1626 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1627 MutexLocker ml(JfieldIdCreation_lock); |
1628 // Retry lookup after we got the lock | |
1629 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1630 if (probe == NULL) { | |
1631 // Slow case, allocate new static field identifier | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1632 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1633 this_oop->set_jni_ids(probe); |
1634 } | |
1635 return probe; | |
1636 } | |
1637 | |
1638 | |
1639 /* jni_id_for for jfieldIds only */ | |
6725
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coleenp
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6266
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|
1640 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1641 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1642 if (probe == NULL) { | |
6725
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coleenp
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|
1643 probe = jni_id_for_impl(this, offset); |
0 | 1644 } |
1645 return probe; | |
1646 } | |
1647 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
1648 u2 InstanceKlass::enclosing_method_data(int offset) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
1649 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1650 if (inner_class_list == NULL) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1651 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1652 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1653 int length = inner_class_list->length(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1654 if (length % inner_class_next_offset == 0) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1655 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1656 } else { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1657 int index = length - enclosing_method_attribute_size; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1658 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1659 return inner_class_list->at(index + offset); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1660 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1661 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1662 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1663 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1664 u2 method_index) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1665 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1666 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1667 int length = inner_class_list->length(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1668 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1669 int index = length - enclosing_method_attribute_size; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1670 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1671 index + enclosing_method_class_index_offset, class_index); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1672 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1673 index + enclosing_method_method_index_offset, method_index); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1674 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
1675 } |
0 | 1676 |
1677 // Lookup or create a jmethodID. | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1678 // This code is called by the VMThread and JavaThreads so the |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1679 // locking has to be done very carefully to avoid deadlocks |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1680 // and/or other cache consistency problems. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1681 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
1682 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1683 size_t idnum = (size_t)method_h->method_idnum(); |
1684 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1685 size_t length = 0; | |
1686 jmethodID id = NULL; | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
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|
1687 |
74a5db69c1fe
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diff
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|
1688 // We use a double-check locking idiom here because this cache is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
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diff
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|
1689 // performance sensitive. In the normal system, this cache only |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1690 // transitions from NULL to non-NULL which is safe because we use |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1691 // release_set_methods_jmethod_ids() to advertise the new cache. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
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|
1692 // A partially constructed cache should never be seen by a racing |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
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diff
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|
1693 // thread. We also use release_store_ptr() to save a new jmethodID |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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974
diff
changeset
|
1694 // in the cache so a partially constructed jmethodID should never be |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
changeset
|
1695 // seen either. Cache reads of existing jmethodIDs proceed without a |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1696 // lock, but cache writes of a new jmethodID requires uniqueness and |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1697 // creation of the cache itself requires no leaks so a lock is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
changeset
|
1698 // generally acquired in those two cases. |
74a5db69c1fe
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dcubed
parents:
974
diff
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|
1699 // |
74a5db69c1fe
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diff
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|
1700 // If the RedefineClasses() API has been used, then this cache can |
74a5db69c1fe
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dcubed
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974
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|
1701 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
74a5db69c1fe
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dcubed
parents:
974
diff
changeset
|
1702 // Cache creation requires no leaks and we require safety between all |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1703 // cache accesses and freeing of the old cache so a lock is generally |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
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974
diff
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|
1704 // acquired when the RedefineClasses() API has been used. |
0 | 1705 |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
974
diff
changeset
|
1706 if (jmeths != NULL) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1707 // the cache already exists |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1708 if (!ik_h->idnum_can_increment()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1709 // the cache can't grow so we can just get the current values |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1710 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1711 } else { |
74a5db69c1fe
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974
diff
changeset
|
1712 // cache can grow so we have to be more careful |
74a5db69c1fe
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dcubed
parents:
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diff
changeset
|
1713 if (Threads::number_of_threads() == 0 || |
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diff
changeset
|
1714 SafepointSynchronize::is_at_safepoint()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1715 // we're single threaded or at a safepoint - no locking needed |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
1716 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
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diff
changeset
|
1717 } else { |
74a5db69c1fe
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diff
changeset
|
1718 MutexLocker ml(JmethodIdCreation_lock); |
74a5db69c1fe
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dcubed
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974
diff
changeset
|
1719 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
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diff
changeset
|
1720 } |
74a5db69c1fe
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diff
changeset
|
1721 } |
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diff
changeset
|
1722 } |
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1723 // implied else: |
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1724 // we need to allocate a cache so default length and id values are good |
0 | 1725 |
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1726 if (jmeths == NULL || // no cache yet |
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1727 length <= idnum || // cache is too short |
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1728 id == NULL) { // cache doesn't contain entry |
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1729 |
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1730 // This function can be called by the VMThread so we have to do all |
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1731 // things that might block on a safepoint before grabbing the lock. |
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1732 // Otherwise, we can deadlock with the VMThread or have a cache |
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1733 // consistency issue. These vars keep track of what we might have |
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1734 // to free after the lock is dropped. |
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1735 jmethodID to_dealloc_id = NULL; |
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1736 jmethodID* to_dealloc_jmeths = NULL; |
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1737 |
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1738 // may not allocate new_jmeths or use it if we allocate it |
0 | 1739 jmethodID* new_jmeths = NULL; |
1740 if (length <= idnum) { | |
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1741 // allocate a new cache that might be used |
0 | 1742 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1743 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1744 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1745 // cache size is stored in element[0], other elements offset by one |
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1746 new_jmeths[0] = (jmethodID)size; |
0 | 1747 } |
1748 | |
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1749 // allocate a new jmethodID that might be used |
0 | 1750 jmethodID new_id = NULL; |
1751 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1752 // The method passed in is old (but not obsolete), we need to use the current version | |
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1753 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1754 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1755 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1756 } else { |
1757 // It is the current version of the method or an obsolete method, | |
1758 // use the version passed in | |
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1759 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1760 } |
1761 | |
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1762 if (Threads::number_of_threads() == 0 || |
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1763 SafepointSynchronize::is_at_safepoint()) { |
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1764 // we're single threaded or at a safepoint - no locking needed |
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1765 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1766 &to_dealloc_id, &to_dealloc_jmeths); |
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1767 } else { |
0 | 1768 MutexLocker ml(JmethodIdCreation_lock); |
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1769 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1770 &to_dealloc_id, &to_dealloc_jmeths); |
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1771 } |
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1772 |
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1773 // The lock has been dropped so we can free resources. |
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1774 // Free up either the old cache or the new cache if we allocated one. |
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1775 if (to_dealloc_jmeths != NULL) { |
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1776 FreeHeap(to_dealloc_jmeths); |
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1777 } |
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1778 // free up the new ID since it wasn't needed |
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1779 if (to_dealloc_id != NULL) { |
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1780 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1781 } |
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1782 } |
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1783 return id; |
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1784 } |
0 | 1785 |
49
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1786 |
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1787 // Common code to fetch the jmethodID from the cache or update the |
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1788 // cache with the new jmethodID. This function should never do anything |
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1789 // that causes the caller to go to a safepoint or we can deadlock with |
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1790 // the VMThread or have cache consistency issues. |
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1791 // |
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1792 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1793 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1794 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1795 jmethodID** to_dealloc_jmeths_p) { |
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1796 assert(new_id != NULL, "sanity check"); |
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1797 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1798 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1799 assert(Threads::number_of_threads() == 0 || |
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1800 SafepointSynchronize::is_at_safepoint() || |
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1801 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1802 |
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1803 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1804 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1805 jmethodID id = NULL; |
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1806 size_t length = 0; |
0 | 1807 |
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1808 if (jmeths == NULL || // no cache yet |
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1809 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1810 if (jmeths != NULL) { |
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1811 // copy any existing entries from the old cache |
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1812 for (size_t index = 0; index < length; index++) { |
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1813 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1814 } |
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1815 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1816 } |
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1817 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1818 } else { |
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1819 // fetch jmethodID (if any) from the existing cache |
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1820 id = jmeths[idnum+1]; |
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1821 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1822 } |
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1823 if (id == NULL) { |
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1824 // No matching jmethodID in the existing cache or we have a new |
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1825 // cache or we just grew the cache. This cache write is done here |
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1826 // by the first thread to win the foot race because a jmethodID |
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1827 // needs to be unique once it is generally available. |
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1828 id = new_id; |
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1829 |
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1830 // The jmethodID cache can be read while unlocked so we have to |
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1831 // make sure the new jmethodID is complete before installing it |
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1832 // in the cache. |
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1833 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1834 } else { |
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1835 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1836 } |
1837 return id; | |
1838 } | |
1839 | |
1840 | |
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1841 // Common code to get the jmethodID cache length and the jmethodID |
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1842 // value at index idnum if there is one. |
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1843 // |
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1844 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1845 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1846 assert(cache != NULL, "sanity check"); |
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1847 assert(length_p != NULL, "sanity check"); |
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1848 assert(id_p != NULL, "sanity check"); |
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1849 |
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1850 // cache size is stored in element[0], other elements offset by one |
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1851 *length_p = (size_t)cache[0]; |
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1852 if (*length_p <= idnum) { // cache is too short |
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1853 *id_p = NULL; |
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1854 } else { |
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1855 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1856 } |
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1857 } |
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1858 |
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1859 |
0 | 1860 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1861 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1862 size_t idnum = (size_t)method->method_idnum(); |
1863 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1864 size_t length; // length assigned as debugging crumb | |
1865 jmethodID id = NULL; | |
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1866 if (jmeths != NULL && // If there is a cache |
0 | 1867 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1868 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1869 } | |
1870 return id; | |
1871 } | |
1872 | |
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1873 int nmethodBucket::decrement() { |
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1874 return Atomic::add(-1, (volatile int *)&_count); |
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1875 } |
0 | 1876 |
1877 // | |
1878 // Walk the list of dependent nmethods searching for nmethods which | |
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1879 // are dependent on the changes that were passed in and mark them for |
0 | 1880 // deoptimization. Returns the number of nmethods found. |
1881 // | |
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1882 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1883 assert_locked_or_safepoint(CodeCache_lock); |
1884 int found = 0; | |
1885 nmethodBucket* b = _dependencies; | |
1886 while (b != NULL) { | |
1887 nmethod* nm = b->get_nmethod(); | |
1888 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1889 // the dependency list may contain nmethods which aren't alive. | |
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1890 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1891 if (TraceDependencies) { |
1892 ResourceMark rm; | |
1893 tty->print_cr("Marked for deoptimization"); | |
1894 tty->print_cr(" context = %s", this->external_name()); | |
1895 changes.print(); | |
1896 nm->print(); | |
1897 nm->print_dependencies(); | |
1898 } | |
1899 nm->mark_for_deoptimization(); | |
1900 found++; | |
1901 } | |
1902 b = b->next(); | |
1903 } | |
1904 return found; | |
1905 } | |
1906 | |
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1907 void InstanceKlass::clean_dependent_nmethods() { |
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1908 assert_locked_or_safepoint(CodeCache_lock); |
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1909 |
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1910 if (has_unloaded_dependent()) { |
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1911 nmethodBucket* b = _dependencies; |
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1912 nmethodBucket* last = NULL; |
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1913 while (b != NULL) { |
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1914 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1915 |
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1916 nmethodBucket* next = b->next(); |
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1917 |
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1918 if (b->count() == 0) { |
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1919 if (last == NULL) { |
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1920 _dependencies = next; |
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1921 } else { |
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1922 last->set_next(next); |
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1923 } |
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1924 delete b; |
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1925 // last stays the same. |
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1926 } else { |
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1927 last = b; |
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1928 } |
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1929 |
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1930 b = next; |
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1931 } |
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1932 set_has_unloaded_dependent(false); |
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1933 } |
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1934 #ifdef ASSERT |
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1935 else { |
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1936 // Verification |
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1937 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1938 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1939 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1940 } |
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1941 } |
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1942 #endif |
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1943 } |
0 | 1944 |
1945 // | |
1946 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1947 // It's possible that an nmethod has multiple dependencies on this klass | |
1948 // so a count is kept for each bucket to guarantee that creation and | |
1949 // deletion of dependencies is consistent. | |
1950 // | |
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1951 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1952 assert_locked_or_safepoint(CodeCache_lock); |
1953 nmethodBucket* b = _dependencies; | |
1954 nmethodBucket* last = NULL; | |
1955 while (b != NULL) { | |
1956 if (nm == b->get_nmethod()) { | |
1957 b->increment(); | |
1958 return; | |
1959 } | |
1960 b = b->next(); | |
1961 } | |
1962 _dependencies = new nmethodBucket(nm, _dependencies); | |
1963 } | |
1964 | |
1965 | |
1966 // | |
1967 // Decrement count of the nmethod in the dependency list and remove | |
1968 // the bucket competely when the count goes to 0. This method must | |
1969 // find a corresponding bucket otherwise there's a bug in the | |
1970 // recording of dependecies. | |
1971 // | |
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1972 void InstanceKlass::remove_dependent_nmethod(nmethod* nm, bool delete_immediately) { |
0 | 1973 assert_locked_or_safepoint(CodeCache_lock); |
1974 nmethodBucket* b = _dependencies; | |
1975 nmethodBucket* last = NULL; | |
1976 while (b != NULL) { | |
1977 if (nm == b->get_nmethod()) { | |
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1978 int val = b->decrement(); |
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1979 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1980 if (val == 0) { |
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1981 if (delete_immediately) { |
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1982 if (last == NULL) { |
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1983 _dependencies = b->next(); |
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1984 } else { |
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1985 last->set_next(b->next()); |
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1986 } |
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1987 delete b; |
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1988 } else { |
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1989 // The deletion of this entry is deferred until a later, potentially parallel GC phase. |
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1990 set_has_unloaded_dependent(true); |
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1991 } |
0 | 1992 } |
1993 return; | |
1994 } | |
1995 last = b; | |
1996 b = b->next(); | |
1997 } | |
1998 #ifdef ASSERT | |
1999 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
2000 nm->print(); | |
2001 #endif // ASSERT | |
2002 ShouldNotReachHere(); | |
2003 } | |
2004 | |
2005 | |
2006 #ifndef PRODUCT | |
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2007 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 2008 nmethodBucket* b = _dependencies; |
2009 int idx = 0; | |
2010 while (b != NULL) { | |
2011 nmethod* nm = b->get_nmethod(); | |
2012 tty->print("[%d] count=%d { ", idx++, b->count()); | |
2013 if (!verbose) { | |
2014 nm->print_on(tty, "nmethod"); | |
2015 tty->print_cr(" } "); | |
2016 } else { | |
2017 nm->print(); | |
2018 nm->print_dependencies(); | |
2019 tty->print_cr("--- } "); | |
2020 } | |
2021 b = b->next(); | |
2022 } | |
2023 } | |
2024 | |
2025 | |
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2026 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 2027 nmethodBucket* b = _dependencies; |
2028 while (b != NULL) { | |
2029 if (nm == b->get_nmethod()) { | |
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2030 #ifdef ASSERT |
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2031 int count = b->count(); |
20279 | 2032 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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2033 #endif |
0 | 2034 return true; |
2035 } | |
2036 b = b->next(); | |
2037 } | |
2038 return false; | |
2039 } | |
2040 #endif //PRODUCT | |
2041 | |
2042 | |
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2043 // Garbage collection |
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2044 |
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2045 #ifdef ASSERT |
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2046 template <class T> void assert_is_in(T *p) { |
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2047 T heap_oop = oopDesc::load_heap_oop(p); |
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2048 if (!oopDesc::is_null(heap_oop)) { |
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2049 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2050 assert(Universe::heap()->is_in(o), "should be in heap"); |
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2051 } |
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2052 } |
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2053 template <class T> void assert_is_in_closed_subset(T *p) { |
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2054 T heap_oop = oopDesc::load_heap_oop(p); |
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2055 if (!oopDesc::is_null(heap_oop)) { |
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2056 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2057 assert(Universe::heap()->is_in_closed_subset(o), |
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2058 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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2059 } |
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2060 } |
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2061 template <class T> void assert_is_in_reserved(T *p) { |
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2062 T heap_oop = oopDesc::load_heap_oop(p); |
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2063 if (!oopDesc::is_null(heap_oop)) { |
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2064 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2065 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2066 } |
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2067 } |
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2068 template <class T> void assert_nothing(T *p) {} |
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2069 |
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2070 #else |
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2071 template <class T> void assert_is_in(T *p) {} |
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2072 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2073 template <class T> void assert_is_in_reserved(T *p) {} |
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2074 template <class T> void assert_nothing(T *p) {} |
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2075 #endif // ASSERT |
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2076 |
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2077 // |
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2078 // Macros that iterate over areas of oops which are specialized on type of |
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2079 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2080 // |
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2081 // Parameters are: |
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2082 // T - type of oop to point to (either oop or narrowOop) |
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2083 // start_p - starting pointer for region to iterate over |
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2084 // count - number of oops or narrowOops to iterate over |
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2085 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2086 // makes it more efficient to put in a macro rather than making |
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2087 // it a template function) |
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2088 // assert_fn - assert function which is template function because performance |
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2089 // doesn't matter when enabled. |
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2090 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2091 T, start_p, count, do_oop, \ |
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2092 assert_fn) \ |
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2093 { \ |
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2094 T* p = (T*)(start_p); \ |
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2095 T* const end = p + (count); \ |
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2096 while (p < end) { \ |
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2097 (assert_fn)(p); \ |
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2098 do_oop; \ |
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2099 ++p; \ |
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2100 } \ |
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2101 } |
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2102 |
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2103 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2104 T, start_p, count, do_oop, \ |
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2105 assert_fn) \ |
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2106 { \ |
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2107 T* const start = (T*)(start_p); \ |
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2108 T* p = start + (count); \ |
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2109 while (start < p) { \ |
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2110 --p; \ |
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2111 (assert_fn)(p); \ |
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2112 do_oop; \ |
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2113 } \ |
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2114 } |
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2115 |
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2116 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2117 T, start_p, count, low, high, \ |
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2118 do_oop, assert_fn) \ |
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2119 { \ |
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2120 T* const l = (T*)(low); \ |
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2121 T* const h = (T*)(high); \ |
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2122 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2123 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2124 "bounded region must be properly aligned"); \ |
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2125 T* p = (T*)(start_p); \ |
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2126 T* end = p + (count); \ |
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2127 if (p < l) p = l; \ |
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2128 if (end > h) end = h; \ |
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2129 while (p < end) { \ |
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2130 (assert_fn)(p); \ |
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2131 do_oop; \ |
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2132 ++p; \ |
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2133 } \ |
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2134 } |
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2135 |
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2136 |
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2137 // The following macros call specialized macros, passing either oop or |
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2138 // narrowOop as the specialization type. These test the UseCompressedOops |
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2139 // flag. |
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2140 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2141 { \ |
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2142 /* Compute oopmap block range. The common case \ |
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2143 is nonstatic_oop_map_size == 1. */ \ |
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2144 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2145 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2146 if (UseCompressedOops) { \ |
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2147 while (map < end_map) { \ |
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2148 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2149 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2150 do_oop, assert_fn) \ |
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2151 ++map; \ |
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2152 } \ |
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2153 } else { \ |
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2154 while (map < end_map) { \ |
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2155 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2156 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2157 do_oop, assert_fn) \ |
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2158 ++map; \ |
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2159 } \ |
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2160 } \ |
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2161 } |
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2162 |
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2163 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2164 { \ |
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2165 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2166 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2167 if (UseCompressedOops) { \ |
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2168 while (start_map < map) { \ |
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2169 --map; \ |
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2170 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2171 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2172 do_oop, assert_fn) \ |
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2173 } \ |
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2174 } else { \ |
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2175 while (start_map < map) { \ |
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2176 --map; \ |
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2177 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2178 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2179 do_oop, assert_fn) \ |
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2180 } \ |
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2181 } \ |
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2182 } |
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2183 |
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2184 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2185 assert_fn) \ |
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2186 { \ |
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2187 /* Compute oopmap block range. The common case is \ |
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2188 nonstatic_oop_map_size == 1, so we accept the \ |
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2189 usually non-existent extra overhead of examining \ |
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2190 all the maps. */ \ |
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2191 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2192 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2193 if (UseCompressedOops) { \ |
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2194 while (map < end_map) { \ |
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2195 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2196 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2197 low, high, \ |
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2198 do_oop, assert_fn) \ |
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2199 ++map; \ |
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2200 } \ |
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2201 } else { \ |
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2202 while (map < end_map) { \ |
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2203 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2204 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2205 low, high, \ |
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2206 do_oop, assert_fn) \ |
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2207 ++map; \ |
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2208 } \ |
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2209 } \ |
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2210 } |
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2211 |
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2212 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2213 assert(obj != NULL, "can't follow the content of NULL object"); |
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2214 MarkSweep::follow_klass(obj->klass()); |
113
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2215 InstanceKlass_OOP_MAP_ITERATE( \ |
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2216 obj, \ |
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2217 MarkSweep::mark_and_push(p), \ |
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2218 assert_is_in_closed_subset) |
0 | 2219 } |
2220 | |
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2221 #if INCLUDE_ALL_GCS |
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2222 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2223 oop obj) { |
113
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2224 assert(obj != NULL, "can't follow the content of NULL object"); |
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2225 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2226 // Only mark the header and let the scan of the meta-data mark |
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2227 // everything else. |
113
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2228 InstanceKlass_OOP_MAP_ITERATE( \ |
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2229 obj, \ |
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2230 PSParallelCompact::mark_and_push(cm, p), \ |
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2231 assert_is_in) |
0 | 2232 } |
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2233 #endif // INCLUDE_ALL_GCS |
0 | 2234 |
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2235 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2236 // applied to the klass ptr in the object header. |
2237 | |
342
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2238 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2239 \ |
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2240 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2241 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2242 /* header */ \ |
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2243 if_do_metadata_checked(closure, nv_suffix) { \ |
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2244 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2245 } \ |
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2246 InstanceKlass_OOP_MAP_ITERATE( \ |
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2247 obj, \ |
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2248 SpecializationStats:: \ |
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2249 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2250 (closure)->do_oop##nv_suffix(p), \ |
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2251 assert_is_in_closed_subset) \ |
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2252 return size_helper(); \ |
0 | 2253 } |
2254 | |
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2255 #if INCLUDE_ALL_GCS |
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2256 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2257 \ |
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2258 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2259 OopClosureType* closure) { \ |
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2260 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2261 \ |
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2262 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2263 \ |
342
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2264 /* instance variables */ \ |
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2265 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2266 obj, \ |
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2267 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2268 (closure)->do_oop##nv_suffix(p), \ |
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2269 assert_is_in_closed_subset) \ |
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2270 return size_helper(); \ |
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2271 } |
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2272 #endif // INCLUDE_ALL_GCS |
342
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2273 |
113
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2274 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2275 \ |
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2276 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2277 OopClosureType* closure, \ |
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2278 MemRegion mr) { \ |
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2279 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2280 if_do_metadata_checked(closure, nv_suffix) { \ |
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2281 if (mr.contains(obj)) { \ |
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2282 closure->do_klass##nv_suffix(obj->klass()); \ |
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2283 } \ |
113
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2284 } \ |
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2285 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2286 obj, mr.start(), mr.end(), \ |
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2287 (closure)->do_oop##nv_suffix(p), \ |
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2288 assert_is_in_closed_subset) \ |
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2289 return size_helper(); \ |
0 | 2290 } |
2291 | |
2292 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2293 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2294 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2295 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2296 #if INCLUDE_ALL_GCS |
342
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2297 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2298 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2299 #endif // INCLUDE_ALL_GCS |
0 | 2300 |
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2301 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2302 int size = size_helper(); |
113
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2303 InstanceKlass_OOP_MAP_ITERATE( \ |
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2304 obj, \ |
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2305 MarkSweep::adjust_pointer(p), \ |
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2306 assert_is_in) |
0 | 2307 return size; |
2308 } | |
2309 | |
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2310 #if INCLUDE_ALL_GCS |
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2311 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2312 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2313 obj, \ |
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2314 if (PSScavenge::should_scavenge(p)) { \ |
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2315 pm->claim_or_forward_depth(p); \ |
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2316 }, \ |
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2317 assert_nothing ) |
0 | 2318 } |
2319 | |
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2320 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2321 int size = size_helper(); |
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2322 InstanceKlass_OOP_MAP_ITERATE( \ |
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2323 obj, \ |
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2324 PSParallelCompact::adjust_pointer(p), \ |
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2325 assert_is_in) |
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2326 return size; |
0 | 2327 } |
2328 | |
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2329 #endif // INCLUDE_ALL_GCS |
0 | 2330 |
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2331 void InstanceKlass::clean_weak_instanceklass_links(BoolObjectClosure* is_alive) { |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2332 clean_implementors_list(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2333 clean_method_data(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2334 |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2335 clean_dependent_nmethods(); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2336 } |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2337 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2338 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20268
diff
changeset
|
2339 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2340 if (is_interface()) { |
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2341 if (ClassUnloading) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2342 Klass* impl = implementor(); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2343 if (impl != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2344 if (!impl->is_loader_alive(is_alive)) { |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2345 // remove this guy |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2346 Klass** klass = adr_implementor(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2347 assert(klass != NULL, "null klass"); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2348 if (klass != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2349 *klass = NULL; |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2350 } |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2351 } |
0 | 2352 } |
6725
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 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2356 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2357 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 for (int m = 0; m < methods()->length(); m++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2359 MethodData* mdo = methods()->at(m)->method_data(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2360 if (mdo != NULL) { |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
17674
diff
changeset
|
2361 mdo->clean_method_data(is_alive); |
0 | 2362 } |
2363 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2364 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2365 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2366 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2367 static void remove_unshareable_in_class(Klass* k) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2368 // remove klass's unshareable info |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2369 k->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2370 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2371 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2372 void InstanceKlass::remove_unshareable_info() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2373 Klass::remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2374 // Unlink the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2375 if (is_linked()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 unlink_class(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2377 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2378 init_implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2379 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2380 constants()->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2381 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2382 for (int i = 0; i < methods()->length(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2383 Method* m = methods()->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2384 m->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2385 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2386 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2387 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2388 array_klasses_do(remove_unshareable_in_class); |
0 | 2389 } |
2390 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2391 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2392 // Array classes have null protection domain. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2393 // --> see ArrayKlass::complete_create_array_klass() |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2394 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2395 } |
2396 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2397 void InstanceKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2398 Klass::restore_unshareable_info(loader_data, protection_domain, CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2399 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2400 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2401 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2402 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2403 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2404 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2405 m->restore_unshareable_info(CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2406 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2407 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2408 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2409 // entries in this vtable for super classes so the CDS vtable might |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2410 // point to old or obsolete entries. RedefineClasses doesn't fix up |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2411 // vtables in the shared system dictionary, only the main one. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2412 // It also redefines the itable too so fix that too. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2413 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2414 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2415 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2416 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2417 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2418 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2419 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2420 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2421 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
|
2422 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2423 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2424 // returns true IFF is_in_error_state() has been changed as a result of this call. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2425 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2426 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2427 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2428 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2429 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2430 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2431 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2432 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2433 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2434 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2435 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2436 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2437 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2438 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2439 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2440 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2441 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2442 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2443 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2444 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2445 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2446 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2447 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2448 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2449 set_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2450 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2451 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2452 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2453 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2454 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2455 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2456 static void clear_all_breakpoints(Method* m) { |
0 | 2457 m->clear_all_breakpoints(); |
2458 } | |
2459 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2460 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2461 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2462 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2463 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2464 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2465 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2466 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2467 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2468 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2469 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2470 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2471 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
|
2472 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2473 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2474 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2475 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2476 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2477 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2478 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2479 // 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
|
2480 // 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
|
2481 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2482 |
0 | 2483 // Deallocate oop map cache |
2484 if (_oop_map_cache != NULL) { | |
2485 delete _oop_map_cache; | |
2486 _oop_map_cache = NULL; | |
2487 } | |
2488 | |
2489 // Deallocate JNI identifiers for jfieldIDs | |
2490 JNIid::deallocate(jni_ids()); | |
2491 set_jni_ids(NULL); | |
2492 | |
2493 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2494 if (jmeths != (jmethodID*)NULL) { | |
2495 release_set_methods_jmethod_ids(NULL); | |
2496 FreeHeap(jmeths); | |
2497 } | |
2498 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2499 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2500 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2501 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
|
2502 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
|
2503 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2504 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2505 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2506 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2507 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2508 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2509 |
0 | 2510 // release dependencies |
2511 nmethodBucket* b = _dependencies; | |
2512 _dependencies = NULL; | |
2513 while (b != NULL) { | |
2514 nmethodBucket* next = b->next(); | |
2515 delete b; | |
2516 b = next; | |
2517 } | |
2518 | |
2519 // Deallocate breakpoint records | |
2520 if (breakpoints() != 0x0) { | |
2521 methods_do(clear_all_breakpoints); | |
2522 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2523 } | |
2524 | |
2525 // deallocate information about previous versions | |
2526 if (_previous_versions != NULL) { | |
2527 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2528 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2529 delete pv_node; | |
2530 } | |
2531 delete _previous_versions; | |
2532 _previous_versions = NULL; | |
2533 } | |
2534 | |
2535 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2536 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2537 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2538 _cached_class_file = NULL; |
0 | 2539 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2540 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2541 // 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
|
2542 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2543 // 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
|
2544 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2545 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
|
2546 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
|
2547 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2548 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2549 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2550 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2551 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2552 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
|
2553 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2554 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2555 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2556 // 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
|
2557 // 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
|
2558 // 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
|
2559 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2560 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2561 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
|
2562 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2563 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2564 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2565 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2566 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2567 } |
0 | 2568 } |
2569 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2570 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2571 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
|
2572 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2573 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2574 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2575 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2576 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2577 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2578 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2579 // 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
|
2580 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2581 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2582 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
|
2583 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2584 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2585 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2586 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2587 // Get the internal name as a c string |
0 | 2588 const char* src = (const char*) (name()->as_C_string()); |
2589 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2590 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2591 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
|
2592 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2593 // Add L as type indicator |
0 | 2594 int dest_index = 0; |
2595 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2596 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2597 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2598 for (int src_index = 0; src_index < src_length; ) { |
0 | 2599 dest[dest_index++] = src[src_index++]; |
2600 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2601 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2602 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2603 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2604 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2605 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2606 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2607 // Add the semicolon and the NULL |
0 | 2608 dest[dest_index++] = ';'; |
2609 dest[dest_index] = '\0'; | |
2610 return dest; | |
2611 } | |
2612 | |
2613 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2614 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2615 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2616 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2617 Symbol* classname1 = class1->name(); |
2618 | |
2619 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2620 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2621 } |
2622 oop classloader2; | |
6983 | 2623 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2624 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2625 } else { |
6983 | 2626 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2627 classloader2 = NULL; |
2628 } | |
6983 | 2629 Symbol* classname2 = class2->name(); |
0 | 2630 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2631 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2632 classloader2, classname2); |
2633 } | |
2634 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2635 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2636 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2637 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2638 Symbol* classname1 = class1->name(); |
0 | 2639 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2640 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2641 classloader2, classname2); |
2642 } | |
2643 | |
2644 // return true if two classes are in the same package, classloader | |
2645 // and classname information is enough to determine a class's package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2646 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2647 oop class_loader2, Symbol* class_name2) { |
0 | 2648 if (class_loader1 != class_loader2) { |
2649 return false; | |
665
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2650 } else if (class_name1 == class_name2) { |
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2651 return true; // skip painful bytewise comparison |
0 | 2652 } else { |
2653 ResourceMark rm; | |
2654 | |
2177
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|
2655 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2656 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2657 // Otherwise, we just compare jbyte values between the strings. | |
2177
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|
2658 const jbyte *name1 = class_name1->base(); |
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|
2659 const jbyte *name2 = class_name2->base(); |
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|
2660 |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2661 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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diff
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|
2662 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2663 |
2664 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2665 // One of the two doesn't have a package. Only return true | |
2666 // if the other one also doesn't have a package. | |
2667 return last_slash1 == last_slash2; | |
2668 } else { | |
2669 // Skip over '['s | |
2670 if (*name1 == '[') { | |
2671 do { | |
2672 name1++; | |
2673 } while (*name1 == '['); | |
2674 if (*name1 != 'L') { | |
2675 // Something is terribly wrong. Shouldn't be here. | |
2676 return false; | |
2677 } | |
2678 } | |
2679 if (*name2 == '[') { | |
2680 do { | |
2681 name2++; | |
2682 } while (*name2 == '['); | |
2683 if (*name2 != 'L') { | |
2684 // Something is terribly wrong. Shouldn't be here. | |
2685 return false; | |
2686 } | |
2687 } | |
2688 | |
2689 // Check that package part is identical | |
2690 int length1 = last_slash1 - name1; | |
2691 int length2 = last_slash2 - name2; | |
2692 | |
2693 return UTF8::equal(name1, length1, name2, length2); | |
2694 } | |
2695 } | |
2696 } | |
2697 | |
652
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|
2698 // Returns true iff super_method can be overridden by a method in targetclassname |
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2699 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
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|
2700 // Assumes name-signature match |
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2701 // "this" is InstanceKlass of super_method which must exist |
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2702 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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2703 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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2704 // Private methods can not be overridden |
4aaa9f5e02a8
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|
2705 if (super_method->is_private()) { |
4aaa9f5e02a8
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|
2706 return false; |
4aaa9f5e02a8
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|
2707 } |
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diff
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|
2708 // If super method is accessible, then override |
4aaa9f5e02a8
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|
2709 if ((super_method->is_protected()) || |
4aaa9f5e02a8
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diff
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|
2710 (super_method->is_public())) { |
4aaa9f5e02a8
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diff
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|
2711 return true; |
4aaa9f5e02a8
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acorn
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diff
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|
2712 } |
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acorn
parents:
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diff
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|
2713 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
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|
2714 assert(super_method->is_package_private(), "must be package private"); |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2715 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
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acorn
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diff
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|
2716 } |
0 | 2717 |
665
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diff
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|
2718 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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|
2719 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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diff
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|
2720 Symbol*& simple_name_result, TRAPS) { |
665
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6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
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|
2721 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2722 } |
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diff
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|
2723 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2724 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2725 // tell if two classes have the same enclosing class (at package level) |
6725
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|
2726 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
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|
2727 Klass* class2_oop, TRAPS) { |
da91efe96a93
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coleenp
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|
2728 if (class2_oop == class1()) return true; |
6983 | 2729 if (!class2_oop->oop_is_instance()) return false; |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2730 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2731 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2732 // must be in same package before we try anything else |
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|
2733 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2734 return false; |
c89f86385056
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diff
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|
2735 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2736 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2737 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2738 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2739 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2740 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
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|
2741 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2742 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
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|
2743 bool ignore_inner_is_member; |
6725
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|
2744 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
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1039
diff
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|
2745 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2746 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2747 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2748 outer1 = instanceKlassHandle(THREAD, next); |
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6814659: separable cleanups and subroutines for 6655638
jrose
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|
2749 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2750 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2751 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2752 instanceKlassHandle outer2 = class2; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2753 for (;;) { |
1126
933a3e806ce6
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xlu
parents:
1039
diff
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|
2754 bool ignore_inner_is_member; |
6725
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|
2755 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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1039
diff
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|
2756 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2757 if (next == NULL) break; |
c89f86385056
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jrose
parents:
605
diff
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|
2758 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2759 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2760 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2761 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2762 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2763 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2764 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2765 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2766 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2767 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2768 |
0 | 2769 |
6725
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|
2770 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2771 jint access = access_flags().as_int(); |
2772 | |
2773 // But check if it happens to be member class. | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2774 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2775 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2776 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2777 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2778 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2779 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2780 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2781 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2782 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2783 // since we are looking for the flags for our self. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2784 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2785 if ((ik->name() == inner_name)) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2786 // 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
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|
2787 access = iter.inner_access_flags(); |
f7c4174b33ba
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jiangli
parents:
4739
diff
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|
2788 break; |
0 | 2789 } |
2790 } | |
2791 // Remember to strip ACC_SUPER bit | |
2792 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2793 } | |
2794 | |
6725
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|
2795 jint InstanceKlass::jvmti_class_status() const { |
0 | 2796 jint result = 0; |
2797 | |
2798 if (is_linked()) { | |
2799 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2800 } | |
2801 | |
2802 if (is_initialized()) { | |
2803 assert(is_linked(), "Class status is not consistent"); | |
2804 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2805 } | |
2806 if (is_in_error_state()) { | |
2807 result |= JVMTI_CLASS_STATUS_ERROR; | |
2808 } | |
2809 return result; | |
2810 } | |
2811 | |
6725
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|
2812 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2813 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2814 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2815 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2816 / itableOffsetEntry::size(); | |
2817 | |
2818 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2819 // If the interface isn't implemented by the receiver class, |
0 | 2820 // the VM should throw IncompatibleClassChangeError. |
2821 if (cnt >= nof_interfaces) { | |
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|
2822 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2823 } |
2824 | |
6725
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coleenp
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|
2825 Klass* ik = ioe->interface_klass(); |
0 | 2826 if (ik == holder) break; |
2827 } | |
2828 | |
6725
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coleenp
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|
2829 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
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|
2830 Method* m = ime[index].method(); |
0 | 2831 if (m == NULL) { |
6725
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coleenp
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|
2832 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2833 } |
2834 return m; | |
2835 } | |
2836 | |
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ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2837 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2838 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2839 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2840 // not yet in the vtable due to concurrent subclass define and superinterface |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
changeset
|
2841 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2842 // Note: those in the vtable, should have been updated via adjust_method_entries |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
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20788
diff
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|
2843 void InstanceKlass::adjust_default_methods(InstanceKlass* holder, bool* trace_name_printed) { |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2844 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2845 if (default_methods() != NULL) { |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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parents:
20788
diff
changeset
|
2846 for (int index = 0; index < default_methods()->length(); index ++) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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diff
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|
2847 Method* old_method = default_methods()->at(index); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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20788
diff
changeset
|
2848 if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
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diff
changeset
|
2849 continue; // skip uninteresting entries |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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parents:
20788
diff
changeset
|
2850 } |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2851 assert(!old_method->is_deleted(), "default methods may not be deleted"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
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|
2852 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2853 Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum()); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2854 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2855 assert(new_method != NULL, "method_with_idnum() should not be NULL"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2856 assert(old_method != new_method, "sanity check"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2857 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2858 default_methods()->at_put(index, new_method); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2859 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2860 if (!(*trace_name_printed)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2861 // RC_TRACE_MESG macro has an embedded ResourceMark |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2862 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2863 external_name(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2864 old_method->method_holder()->external_name())); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2865 *trace_name_printed = true; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2866 } |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2867 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2868 new_method->name()->as_C_string(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2869 new_method->signature()->as_C_string())); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2870 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2871 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2872 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2873 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2874 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2875 |
0 | 2876 // On-stack replacement stuff |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2877 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2878 // only one compilation can be active |
2879 NEEDS_CLEANUP | |
2880 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2881 OsrList_lock->lock_without_safepoint_check(); | |
2882 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2883 n->set_osr_link(osr_nmethods_head()); |
0 | 2884 set_osr_nmethods_head(n); |
1783 | 2885 // Raise the highest osr level if necessary |
2886 if (TieredCompilation) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2887 Method* m = n->method(); |
1783 | 2888 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2889 } | |
0 | 2890 // Remember to unlock again |
2891 OsrList_lock->unlock(); | |
1783 | 2892 |
2893 // Get rid of the osr methods for the same bci that have lower levels. | |
2894 if (TieredCompilation) { | |
2895 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2896 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2897 if (inv != NULL && inv->is_in_use()) { | |
2898 inv->make_not_entrant(); | |
2899 } | |
2900 } | |
2901 } | |
0 | 2902 } |
2903 | |
2904 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2905 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2906 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2907 OsrList_lock->lock_without_safepoint_check(); | |
2908 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2909 nmethod* last = NULL; | |
2910 nmethod* cur = osr_nmethods_head(); | |
1783 | 2911 int max_level = CompLevel_none; // Find the max comp level excluding n |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2912 Method* m = n->method(); |
0 | 2913 // Search for match |
2914 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2915 if (TieredCompilation && m == cur->method()) { |
1783 | 2916 // Find max level before n |
2917 max_level = MAX2(max_level, cur->comp_level()); | |
2918 } | |
0 | 2919 last = cur; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2920 cur = cur->osr_link(); |
0 | 2921 } |
1783 | 2922 nmethod* next = NULL; |
0 | 2923 if (cur == n) { |
1783 | 2924 next = cur->osr_link(); |
0 | 2925 if (last == NULL) { |
2926 // Remove first element | |
1783 | 2927 set_osr_nmethods_head(next); |
0 | 2928 } else { |
1783 | 2929 last->set_osr_link(next); |
0 | 2930 } |
2931 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2932 n->set_osr_link(NULL); |
1783 | 2933 if (TieredCompilation) { |
2934 cur = next; | |
2935 while (cur != NULL) { | |
2936 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2937 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2938 max_level = MAX2(max_level, cur->comp_level()); |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2939 } |
1783 | 2940 cur = cur->osr_link(); |
2941 } | |
2942 m->set_highest_osr_comp_level(max_level); | |
2943 } | |
0 | 2944 // Remember to unlock again |
2945 OsrList_lock->unlock(); | |
2946 } | |
2947 | |
20611
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2948 int InstanceKlass::mark_osr_nmethods(const Method* m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2949 // This is a short non-blocking critical region, so the no safepoint check is ok. |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2950 MutexLockerEx ml(OsrList_lock, Mutex::_no_safepoint_check_flag); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2951 nmethod* osr = osr_nmethods_head(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2952 int found = 0; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2953 while (osr != NULL) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2954 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2955 if (osr->method() == m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2956 osr->mark_for_deoptimization(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2957 found++; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2958 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2959 osr = osr->osr_link(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2960 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2961 return found; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2962 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
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20576
diff
changeset
|
2963 |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2964 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2965 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2966 OsrList_lock->lock_without_safepoint_check(); | |
2967 nmethod* osr = osr_nmethods_head(); | |
1783 | 2968 nmethod* best = NULL; |
0 | 2969 while (osr != NULL) { |
2970 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2971 // There can be a time when a c1 osr method exists but we are waiting |
2972 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2973 // the c1 version and only be able to find the c2 version. However | |
2974 // while we overflow in the c1 code at back branches we don't want to | |
2975 // try and switch to the same code as we are already running | |
2976 | |
0 | 2977 if (osr->method() == m && |
2978 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2979 if (match_level) { |
2980 if (osr->comp_level() == comp_level) { | |
2981 // Found a match - return it. | |
2982 OsrList_lock->unlock(); | |
2983 return osr; | |
2984 } | |
2985 } else { | |
2986 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2987 if (osr->comp_level() == CompLevel_highest_tier) { | |
2988 // Found the best possible - return it. | |
2989 OsrList_lock->unlock(); | |
2990 return osr; | |
2991 } | |
2992 best = osr; | |
2993 } | |
2994 } | |
0 | 2995 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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diff
changeset
|
2996 osr = osr->osr_link(); |
0 | 2997 } |
2998 OsrList_lock->unlock(); | |
1783 | 2999 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
3000 return best; | |
3001 } | |
0 | 3002 return NULL; |
3003 } | |
3004 | |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
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|
3005 bool InstanceKlass::add_member_name(Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3006 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3007 MutexLocker ml(MemberNameTable_lock); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
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|
3008 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
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|
3009 |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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diff
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|
3010 // Check if method has been redefined while taking out MemberNameTable_lock, if so |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20611
diff
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|
3011 // return false. We cannot cache obsolete methods. They will crash when the function |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3012 // is called! |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20611
diff
changeset
|
3013 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mem_name()); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
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|
3014 if (method->is_obsolete()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3015 return false; |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20611
diff
changeset
|
3016 } else if (method->is_old()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3017 // Replace method with redefined version |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3018 java_lang_invoke_MemberName::set_vmtarget(mem_name(), method_with_idnum(method->method_idnum())); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20611
diff
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|
3019 } |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20611
diff
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|
3020 |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3021 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
3022 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3023 } |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3024 _member_names->add_member_name(mem_name_wref); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20611
diff
changeset
|
3025 return true; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3026 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
3027 |
0 | 3028 // ----------------------------------------------------------------------------------------------------- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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changeset
|
3029 // Printing |
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3030 |
0 | 3031 #ifndef PRODUCT |
3032 | |
665
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3033 #define BULLET " - " |
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3034 |
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3035 static const char* state_names[] = { |
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3036 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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3037 }; |
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3038 |
12264
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3039 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
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3040 for (int i = 0; i < len; i++) { |
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3041 intptr_t e = start[i]; |
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3042 st->print("%d : " INTPTR_FORMAT, i, e); |
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3043 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
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3044 st->print(" "); |
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3045 ((Metadata*)e)->print_value_on(st); |
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3046 } |
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3047 st->cr(); |
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3048 } |
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3049 } |
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3050 |
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3051 void InstanceKlass::print_on(outputStream* st) const { |
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3052 assert(is_klass(), "must be klass"); |
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3053 Klass::print_on(st); |
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3054 |
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3055 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
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3056 st->print(BULLET"klass size: %d", size()); st->cr(); |
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3057 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
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3058 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
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3059 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
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3060 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
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3061 st->print(BULLET"sub: "); |
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3062 Klass* sub = subklass(); |
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3063 int n; |
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3064 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
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3065 if (n < MaxSubklassPrintSize) { |
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3066 sub->print_value_on(st); |
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3067 st->print(" "); |
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3068 } |
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|
3069 } |
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3070 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
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3071 st->cr(); |
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3072 |
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3073 if (is_interface()) { |
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3074 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
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3075 if (nof_implementors() == 1) { |
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3076 st->print_cr(BULLET"implementor: "); |
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3077 st->print(" "); |
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|
3078 implementor()->print_value_on(st); |
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|
3079 st->cr(); |
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|
3080 } |
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|
3081 } |
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|
3082 |
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3083 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
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3084 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
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|
3085 if (Verbose || WizardMode) { |
6725
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|
3086 Array<Method*>* method_array = methods(); |
12823
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parents:
12811
diff
changeset
|
3087 for (int i = 0; i < method_array->length(); i++) { |
6725
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|
3088 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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3089 } |
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3090 } |
12823
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|
3091 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
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|
3092 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
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parents:
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|
3093 if (Verbose && default_methods() != NULL) { |
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changeset
|
3094 Array<Method*>* method_array = default_methods(); |
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changeset
|
3095 for (int i = 0; i < method_array->length(); i++) { |
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parents:
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diff
changeset
|
3096 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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parents:
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diff
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|
3097 } |
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parents:
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diff
changeset
|
3098 } |
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parents:
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diff
changeset
|
3099 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
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parents:
12811
diff
changeset
|
3100 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
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|
3101 } |
6725
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3102 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
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3103 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
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3104 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
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|
3105 if (class_loader_data() != NULL) { |
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|
3106 st->print(BULLET"class loader data: "); |
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|
3107 class_loader_data()->print_value_on(st); |
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|
3108 st->cr(); |
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|
3109 } |
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|
3110 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
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3111 if (source_file_name() != NULL) { |
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|
3112 st->print(BULLET"source file: "); |
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|
3113 source_file_name()->print_value_on(st); |
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|
3114 st->cr(); |
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|
3115 } |
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|
3116 if (source_debug_extension() != NULL) { |
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|
3117 st->print(BULLET"source debug extension: "); |
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|
3118 st->print("%s", source_debug_extension()); |
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|
3119 st->cr(); |
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|
3120 } |
8031 | 3121 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3122 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3123 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3124 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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3125 { |
12281
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|
3126 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3127 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
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|
3128 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
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|
3129 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3130 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3131 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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|
3132 have_pv = true; |
4f9a42c33738
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|
3133 pv_node->prev_constant_pool()->print_value_on(st); |
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|
3134 } |
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|
3135 if (have_pv) st->cr(); |
4f9a42c33738
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|
3136 } // pvw is cleaned up |
6725
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|
3137 |
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|
3138 if (generic_signature() != NULL) { |
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|
3139 st->print(BULLET"generic signature: "); |
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|
3140 generic_signature()->print_value_on(st); |
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|
3141 st->cr(); |
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|
3142 } |
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|
3143 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
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|
3144 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
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|
3145 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
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|
3146 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
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|
3147 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
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changeset
|
3148 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
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|
3149 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
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3150 FieldPrinter print_static_field(st); |
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|
3151 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
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3152 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
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3153 FieldPrinter print_nonstatic_field(st); |
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3154 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
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|
3155 |
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|
3156 st->print(BULLET"non-static oop maps: "); |
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3157 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
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3158 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
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|
3159 while (map < end_map) { |
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3160 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
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|
3161 map++; |
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|
3162 } |
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|
3163 st->cr(); |
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|
3164 } |
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|
3165 |
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|
3166 #endif //PRODUCT |
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|
3167 |
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changeset
|
3168 void InstanceKlass::print_value_on(outputStream* st) const { |
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changeset
|
3169 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
|
3170 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
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|
3171 name()->print_value_on(st); |
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|
3172 } |
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|
3173 |
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|
3174 #ifndef PRODUCT |
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3175 |
0 | 3176 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
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changeset
|
3177 _st->print(BULLET); |
2376
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|
3178 if (_obj == NULL) { |
0 | 3179 fd->print_on(_st); |
3180 _st->cr(); | |
3181 } else { | |
3182 fd->print_on_for(_st, _obj); | |
3183 _st->cr(); | |
3184 } | |
3185 } | |
3186 | |
3187 | |
6725
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|
3188 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3189 Klass::oop_print_on(obj, st); |
3190 | |
6725
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|
3191 if (this == SystemDictionary::String_klass()) { |
0 | 3192 typeArrayOop value = java_lang_String::value(obj); |
3193 juint offset = java_lang_String::offset(obj); | |
3194 juint length = java_lang_String::length(obj); | |
3195 if (value != NULL && | |
3196 value->is_typeArray() && | |
3197 offset <= (juint) value->length() && | |
3198 offset + length <= (juint) value->length()) { | |
665
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diff
changeset
|
3199 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3200 java_lang_String::print(obj, st); |
0 | 3201 st->cr(); |
3202 if (!WizardMode) return; // that is enough | |
3203 } | |
3204 } | |
3205 | |
665
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changeset
|
3206 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
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parents:
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diff
changeset
|
3207 FieldPrinter print_field(st, obj); |
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7017732: move static fields into Class to prepare for perm gen removal
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parents:
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diff
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|
3208 do_nonstatic_fields(&print_field); |
0 | 3209 |
6725
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changeset
|
3210 if (this == SystemDictionary::Class_klass()) { |
665
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diff
changeset
|
3211 st->print(BULLET"signature: "); |
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|
3212 java_lang_Class::print_signature(obj, st); |
c89f86385056
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|
3213 st->cr(); |
6725
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|
3214 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
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changeset
|
3215 st->print(BULLET"fake entry for mirror: "); |
6725
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|
3216 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3217 st->cr(); |
6725
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|
3218 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
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6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
3219 st->print(BULLET"fake entry for array: "); |
6725
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changeset
|
3220 array_klass->print_value_on_maybe_null(st); |
0 | 3221 st->cr(); |
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
|
3222 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
|
3223 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
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changeset
|
3224 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
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changeset
|
3225 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3226 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
|
3227 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3228 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3229 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3230 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3231 st->cr(); |
0 | 3232 } |
3233 } | |
3234 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3235 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3236 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3237 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3238 st->print("a "); |
3239 name()->print_value_on(st); | |
3240 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3241 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3242 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3243 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3244 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3245 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3246 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3247 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3248 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3249 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3250 } 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
|
3251 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3252 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3253 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3254 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3255 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3256 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3257 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3258 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3259 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3260 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3261 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3262 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3263 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3264 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3265 } 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
|
3266 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
|
3267 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3268 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3269 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3270 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3271 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3272 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
|
3273 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3274 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3275 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3276 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3277 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
|
3278 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3279 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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|
3280 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
3281 } |
0 | 3282 } |
3283 | |
6725
da91efe96a93
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coleenp
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|
3284 const char* InstanceKlass::internal_name() const { |
0 | 3285 return external_name(); |
3286 } | |
3287 | |
7956 | 3288 #if INCLUDE_SERVICES |
3289 // Size Statistics | |
3290 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3291 Klass::collect_statistics(sz); | |
3292 | |
3293 sz->_inst_size = HeapWordSize * size_helper(); | |
3294 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3295 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3296 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3297 ((is_interface() || is_anonymous()) ? | |
3298 align_object_offset(nonstatic_oop_map_size()) : | |
3299 nonstatic_oop_map_size()); | |
3300 | |
3301 int n = 0; | |
3302 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3303 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3304 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3305 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3306 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3307 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3308 sz->_ro_bytes += n; | |
3309 | |
3310 const ConstantPool* cp = constants(); | |
3311 if (cp) { | |
3312 cp->collect_statistics(sz); | |
3313 } | |
3314 | |
3315 const Annotations* anno = annotations(); | |
3316 if (anno) { | |
3317 anno->collect_statistics(sz); | |
3318 } | |
3319 | |
3320 const Array<Method*>* methods_array = methods(); | |
3321 if (methods()) { | |
3322 for (int i = 0; i < methods_array->length(); i++) { | |
3323 Method* method = methods_array->at(i); | |
3324 if (method) { | |
3325 sz->_method_count ++; | |
3326 method->collect_statistics(sz); | |
3327 } | |
3328 } | |
3329 } | |
3330 } | |
3331 #endif // INCLUDE_SERVICES | |
3332 | |
0 | 3333 // Verification |
3334 | |
3335 class VerifyFieldClosure: public OopClosure { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3336 protected: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3337 template <class T> void do_oop_work(T* p) { |
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diff
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|
3338 oop obj = oopDesc::load_decode_heap_oop(p); |
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diff
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|
3339 if (!obj->is_oop_or_null()) { |
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52
diff
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|
3340 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3341 Universe::print(); |
3342 guarantee(false, "boom"); | |
3343 } | |
3344 } | |
113
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diff
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|
3345 public: |
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diff
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|
3346 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3347 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3348 }; |
3349 | |
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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17464
diff
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|
3350 void InstanceKlass::verify_on(outputStream* st) { |
6725
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|
3351 #ifndef PRODUCT |
11034 | 3352 // Avoid redundant verifies, this really should be in product. |
6725
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|
3353 if (_verify_count == Universe::verify_count()) return; |
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3354 _verify_count = Universe::verify_count(); |
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3355 #endif |
11034 | 3356 |
3357 // Verify Klass | |
17674
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|
3358 Klass::verify_on(st); |
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|
3359 |
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|
3360 // Verify that klass is present in ClassLoaderData |
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|
3361 guarantee(class_loader_data()->contains_klass(this), |
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|
3362 "this class isn't found in class loader data"); |
6725
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|
3363 |
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|
3364 // Verify vtables |
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|
3365 if (is_linked()) { |
11034 | 3366 ResourceMark rm; |
6725
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|
3367 // $$$ This used to be done only for m/s collections. Doing it |
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3368 // always seemed a valid generalization. (DLD -- 6/00) |
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|
3369 vtable()->verify(st); |
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|
3370 } |
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|
3371 |
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|
3372 // Verify first subklass |
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|
3373 if (subklass_oop() != NULL) { |
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|
3374 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3375 } |
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|
3376 |
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|
3377 // Verify siblings |
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|
3378 Klass* super = this->super(); |
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|
3379 Klass* sib = next_sibling(); |
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|
3380 if (sib != NULL) { |
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|
3381 if (sib == this) { |
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|
3382 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3383 } |
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|
3384 |
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|
3385 guarantee(sib->is_klass(), "should be klass"); |
da91efe96a93
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|
3386 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3387 } |
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|
3388 |
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|
3389 // Verify implementor fields |
da91efe96a93
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|
3390 Klass* im = implementor(); |
da91efe96a93
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|
3391 if (im != NULL) { |
da91efe96a93
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|
3392 guarantee(is_interface(), "only interfaces should have implementor set"); |
da91efe96a93
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|
3393 guarantee(im->is_klass(), "should be klass"); |
6983 | 3394 guarantee(!im->is_interface() || im == this, |
6725
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|
3395 "implementors cannot be interfaces"); |
da91efe96a93
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|
3396 } |
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|
3397 |
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|
3398 // Verify local interfaces |
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|
3399 if (local_interfaces()) { |
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|
3400 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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|
3401 for (int j = 0; j < local_interfaces->length(); j++) { |
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|
3402 Klass* e = local_interfaces->at(j); |
6983 | 3403 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3404 } |
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|
3405 } |
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|
3406 |
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|
3407 // Verify transitive interfaces |
da91efe96a93
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|
3408 if (transitive_interfaces() != NULL) { |
da91efe96a93
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|
3409 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
da91efe96a93
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|
3410 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
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|
3411 Klass* e = transitive_interfaces->at(j); |
6983 | 3412 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
da91efe96a93
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|
3413 } |
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|
3414 } |
da91efe96a93
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|
3415 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3416 // Verify methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3417 if (methods() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3418 Array<Method*>* methods = this->methods(); |
da91efe96a93
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diff
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|
3419 for (int j = 0; j < methods->length(); j++) { |
da91efe96a93
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|
3420 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
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|
3421 } |
da91efe96a93
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|
3422 for (int j = 0; j < methods->length() - 1; j++) { |
da91efe96a93
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|
3423 Method* m1 = methods->at(j); |
da91efe96a93
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|
3424 Method* m2 = methods->at(j + 1); |
da91efe96a93
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|
3425 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
da91efe96a93
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|
3426 } |
da91efe96a93
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diff
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|
3427 } |
da91efe96a93
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diff
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|
3428 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3429 // Verify method ordering |
da91efe96a93
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diff
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|
3430 if (method_ordering() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3431 Array<int>* method_ordering = this->method_ordering(); |
da91efe96a93
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|
3432 int length = method_ordering->length(); |
da91efe96a93
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coleenp
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|
3433 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3434 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3435 guarantee(length == methods()->length(), "invalid method ordering length"); |
da91efe96a93
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coleenp
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|
3436 jlong sum = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3437 for (int j = 0; j < length; j++) { |
da91efe96a93
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|
3438 int original_index = method_ordering->at(j); |
da91efe96a93
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|
3439 guarantee(original_index >= 0, "invalid method ordering index"); |
da91efe96a93
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|
3440 guarantee(original_index < length, "invalid method ordering index"); |
da91efe96a93
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coleenp
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|
3441 sum += original_index; |
da91efe96a93
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diff
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|
3442 } |
da91efe96a93
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|
3443 // Verify sum of indices 0,1,...,length-1 |
da91efe96a93
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|
3444 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
da91efe96a93
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|
3445 } else { |
da91efe96a93
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|
3446 guarantee(length == 0, "invalid method ordering length"); |
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diff
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|
3447 } |
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diff
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|
3448 } |
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|
3449 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3450 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3451 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3452 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3453 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3454 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3455 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3456 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3457 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3458 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3459 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
|
3460 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3461 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3462 |
6725
da91efe96a93
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coleenp
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6266
diff
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|
3463 // Verify JNI static field identifiers |
da91efe96a93
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coleenp
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diff
changeset
|
3464 if (jni_ids() != NULL) { |
da91efe96a93
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coleenp
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diff
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|
3465 jni_ids()->verify(this); |
da91efe96a93
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diff
changeset
|
3466 } |
da91efe96a93
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diff
changeset
|
3467 |
da91efe96a93
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coleenp
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diff
changeset
|
3468 // Verify other fields |
da91efe96a93
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diff
changeset
|
3469 if (array_klasses() != NULL) { |
da91efe96a93
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diff
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|
3470 guarantee(array_klasses()->is_klass(), "should be klass"); |
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3471 } |
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3472 if (constants() != NULL) { |
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3473 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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3474 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
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|
3475 const Klass* host = host_klass(); |
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|
3476 if (host != NULL) { |
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|
3477 guarantee(host->is_klass(), "should be klass"); |
6725
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3478 } |
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|
3479 } |
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|
3480 |
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3481 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3482 Klass::oop_verify_on(obj, st); |
3483 VerifyFieldClosure blk; | |
6725
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3484 obj->oop_iterate_no_header(&blk); |
0 | 3485 } |
3486 | |
6725
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3487 |
113
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|
3488 // JNIid class for jfieldIDs only |
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3489 // Note to reviewers: |
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3490 // These JNI functions are just moved over to column 1 and not changed |
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3491 // in the compressed oops workspace. |
6725
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3492 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3493 _holder = holder; |
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3494 _offset = offset; |
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3495 _next = next; |
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3496 debug_only(_is_static_field_id = false;) |
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3497 } |
0 | 3498 |
3499 | |
113
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3500 JNIid* JNIid::find(int offset) { |
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3501 JNIid* current = this; |
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3502 while (current != NULL) { |
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3503 if (current->offset() == offset) return current; |
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3504 current = current->next(); |
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|
3505 } |
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|
3506 return NULL; |
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|
3507 } |
0 | 3508 |
3509 void JNIid::deallocate(JNIid* current) { | |
113
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|
3510 while (current != NULL) { |
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|
3511 JNIid* next = current->next(); |
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|
3512 delete current; |
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|
3513 current = next; |
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|
3514 } |
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|
3515 } |
0 | 3516 |
3517 | |
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3518 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
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|
3519 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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3520 int end_field_offset; |
6725
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3521 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3522 |
113
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3523 JNIid* current = this; |
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|
3524 while (current != NULL) { |
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|
3525 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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|
3526 #ifdef ASSERT |
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|
3527 int o = current->offset(); |
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|
3528 if (current->is_static_field_id()) { |
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|
3529 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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|
3530 } |
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|
3531 #endif |
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|
3532 current = current->next(); |
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|
3533 } |
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|
3534 } |
0 | 3535 |
3536 | |
3537 #ifdef ASSERT | |
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3538 void InstanceKlass::set_init_state(ClassState state) { |
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3539 bool good_state = is_shared() ? (_init_state <= state) |
113
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3540 : (_init_state < state); |
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|
3541 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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|
3542 _init_state = (u1)state; |
113
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3543 } |
0 | 3544 #endif |
3545 | |
3546 | |
3547 // RedefineClasses() support for previous versions: | |
3548 | |
6725
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3549 // Purge previous versions |
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|
3550 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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|
3551 if (ik->previous_versions() != NULL) { |
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3552 // This klass has previous versions so see what we can cleanup |
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3553 // while it is safe to do so. |
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|
3554 |
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|
3555 int deleted_count = 0; // leave debugging breadcrumbs |
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|
3556 int live_count = 0; |
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|
3557 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3558 ClassLoaderData::the_null_class_loader_data() : |
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|
3559 ik->class_loader_data(); |
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|
3560 |
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|
3561 // RC_TRACE macro has an embedded ResourceMark |
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|
3562 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3563 ik->external_name(), ik->previous_versions()->length())); |
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|
3564 |
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|
3565 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3566 // check the previous versions array |
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|
3567 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3568 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3569 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3570 |
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|
3571 ConstantPool* pvcp = cp_ref; |
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|
3572 if (!pvcp->on_stack()) { |
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|
3573 // If the constant pool isn't on stack, none of the methods |
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3574 // are executing. Delete all the methods, the constant pool and |
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|
3575 // and this previous version node. |
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|
3576 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3577 if (method_refs != NULL) { |
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|
3578 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3579 Method* method = method_refs->at(j); |
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|
3580 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3581 method_refs->remove_at(j); |
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|
3582 // method will be freed with associated class. |
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|
3583 } |
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|
3584 } |
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|
3585 // Remove the constant pool |
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|
3586 delete pv_node; |
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|
3587 // Since we are traversing the array backwards, we don't have to |
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|
3588 // do anything special with the index. |
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|
3589 ik->previous_versions()->remove_at(i); |
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|
3590 deleted_count++; |
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|
3591 continue; |
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|
3592 } else { |
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|
3593 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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|
3594 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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|
3595 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3596 live_count++; |
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|
3597 } |
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|
3598 |
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|
3599 // At least one method is live in this previous version, clean out |
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|
3600 // the others or mark them as obsolete. |
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|
3601 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3602 if (method_refs != NULL) { |
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|
3603 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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|
3604 method_refs->length())); |
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|
3605 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3606 Method* method = method_refs->at(j); |
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3607 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3608 |
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|
3609 // Remove the emcp method if it's not executing |
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|
3610 // If it's been made obsolete by a redefinition of a non-emcp |
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|
3611 // method, mark it as obsolete but leave it to clean up later. |
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|
3612 if (!method->on_stack()) { |
da91efe96a93
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|
3613 method_refs->remove_at(j); |
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diff
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|
3614 } else if (emcp_method_count == 0) { |
da91efe96a93
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diff
changeset
|
3615 method->set_is_obsolete(); |
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diff
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|
3616 } else { |
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|
3617 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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diff
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|
3618 RC_TRACE(0x00000200, |
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diff
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|
3619 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
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|
3620 method->name()->as_C_string(), |
da91efe96a93
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diff
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|
3621 method->signature()->as_C_string(), j, i)); |
da91efe96a93
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diff
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|
3622 } |
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diff
changeset
|
3623 } |
da91efe96a93
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diff
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|
3624 } |
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diff
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|
3625 } |
da91efe96a93
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diff
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|
3626 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
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|
3627 RC_TRACE(0x00000200, |
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diff
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|
3628 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
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diff
changeset
|
3629 deleted_count)); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3630 } |
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diff
changeset
|
3631 } |
da91efe96a93
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diff
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|
3632 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3633 // External interface for use during class unloading. |
da91efe96a93
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|
3634 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
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|
3635 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
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|
3636 purge_previous_versions_internal(ik, 1); |
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diff
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|
3637 } |
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diff
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|
3638 |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3639 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3640 // Potentially add an information node that contains pointers to the |
0 | 3641 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
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|
3642 // 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
|
3643 // 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
|
3644 // 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
|
3645 // 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
|
3646 // |
6725
da91efe96a93
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diff
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|
3647 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3648 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3649 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
|
3650 "only VMThread can add previous versions"); |
0 | 3651 |
3652 if (_previous_versions == NULL) { | |
3653 // This is the first previous version so make some space. | |
3654 // Start with 2 elements under the assumption that the class | |
3655 // won't be redefined much. | |
6197 | 3656 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3657 GrowableArray<PreviousVersionNode *>(2, true); |
3658 } | |
3659 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3660 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3661 |
0 | 3662 // 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
|
3663 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
3664 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3665 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3666 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3667 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3668 // 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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6266
diff
changeset
|
3669 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3670 // 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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6266
diff
changeset
|
3671 // 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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6266
diff
changeset
|
3672 // 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
|
3673 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3674 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3675 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3676 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3677 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3678 // 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
|
3679 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
|
3680 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3681 ("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
|
3682 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3683 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3684 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
|
3685 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3686 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
|
3687 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3688 // 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
|
3689 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
|
3690 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3691 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3692 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3693 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3694 // 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
|
3695 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3696 } |
0 | 3697 } |
3698 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3699 // 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
|
3700 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
|
3701 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3702 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3703 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3704 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3705 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3706 // 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
|
3707 // is a good time to clear out unused references. |
0 | 3708 |
3709 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3710 _previous_versions->length())); | |
3711 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3712 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3713 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3714 |
3715 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3716 | |
3717 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
|
3718 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3719 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3720 // clear out any matching EMCP method entries the hard way. |
3721 int local_count = 0; | |
3722 for (int i = 0; i < old_methods->length(); i++) { | |
3723 if (!emcp_methods->at(i)) { | |
3724 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3725 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3726 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3727 Symbol* m_signature = old_method->signature(); |
0 | 3728 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3729 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3730 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3731 // 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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6266
diff
changeset
|
3732 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3733 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3734 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3735 if (method_refs == NULL) { |
3736 // We have run into a PreviousVersion generation where | |
3737 // all methods were made obsolete during that generation's | |
3738 // RedefineClasses() operation. At the time of that | |
3739 // operation, all EMCP methods were flushed so we don't | |
3740 // have to go back any further. | |
3741 // | |
3742 // A NULL method_refs is different than an empty method_refs. | |
3743 // We cannot infer any optimizations about older generations | |
3744 // from an empty method_refs for the current generation. | |
3745 break; | |
3746 } | |
3747 | |
3748 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3749 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3750 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3751 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3752 method->name() == m_name && |
0 | 3753 method->signature() == m_signature) { |
3754 // The current RedefineClasses() call has made all EMCP | |
3755 // versions of this method obsolete so mark it as obsolete | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3756 // and remove the reference. |
0 | 3757 RC_TRACE(0x00000400, |
3758 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3759 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3760 | |
3761 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3762 // 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
|
3763 // clean up later. |
0 | 3764 break; |
3765 } | |
3766 } | |
3767 | |
3768 // The previous loop may not find a matching EMCP method, but | |
3769 // that doesn't mean that we can optimize and not go any | |
3770 // further back in the PreviousVersion generations. The EMCP | |
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6964458: Reimplement class meta-data storage to use native memory
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|
3771 // method for this generation could have already been deleted, |
0 | 3772 // but there still may be an older EMCP method that has not |
6725
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|
3773 // been deleted. |
0 | 3774 } |
3775 | |
3776 if (++local_count >= obsolete_method_count) { | |
3777 // no more obsolete methods so bail out now | |
3778 break; | |
3779 } | |
3780 } | |
3781 } | |
3782 } | |
3783 } // end add_previous_version() | |
3784 | |
3785 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3786 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3787 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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3788 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3789 } // end has_previous_version() |
3790 | |
6725
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|
3791 |
22933
1a9c5e6e13b7
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|
3792 InstanceKlass* InstanceKlass::get_klass_version(int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3793 if (constants()->version() == version) { |
1a9c5e6e13b7
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|
3794 return this; |
1a9c5e6e13b7
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|
3795 } |
1a9c5e6e13b7
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|
3796 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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|
3797 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
1a9c5e6e13b7
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|
3798 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3799 ConstantPool* prev_cp = pv_node->prev_constant_pool(); |
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8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3800 if (prev_cp->version() == version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3801 return prev_cp->pool_holder(); |
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|
3802 } |
1a9c5e6e13b7
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|
3803 } |
1a9c5e6e13b7
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|
3804 return NULL; // None found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3805 } |
1a9c5e6e13b7
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|
3806 |
1a9c5e6e13b7
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|
3807 |
6725
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|
3808 Method* InstanceKlass::method_with_idnum(int idnum) { |
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6964458: Reimplement class meta-data storage to use native memory
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|
3809 Method* m = NULL; |
0 | 3810 if (idnum < methods()->length()) { |
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3811 m = methods()->at(idnum); |
0 | 3812 } |
3813 if (m == NULL || m->method_idnum() != idnum) { | |
3814 for (int index = 0; index < methods()->length(); ++index) { | |
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|
3815 m = methods()->at(index); |
0 | 3816 if (m->method_idnum() == idnum) { |
3817 return m; | |
3818 } | |
3819 } | |
12281
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|
3820 // None found, return null for the caller to handle. |
4f9a42c33738
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|
3821 return NULL; |
0 | 3822 } |
3823 return m; | |
3824 } | |
3825 | |
22933
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3826 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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changeset
|
3827 Method* InstanceKlass::method_with_orig_idnum(int idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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|
3828 if (idnum >= methods()->length()) { |
1a9c5e6e13b7
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parents:
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|
3829 return NULL; |
1a9c5e6e13b7
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diff
changeset
|
3830 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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parents:
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|
3831 Method* m = methods()->at(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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parents:
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|
3832 if (m != NULL && m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
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sspitsyn
parents:
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|
3833 return m; |
1a9c5e6e13b7
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changeset
|
3834 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3835 // Obsolete method idnum does not match the original idnum |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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parents:
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|
3836 for (int index = 0; index < methods()->length(); ++index) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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|
3837 m = methods()->at(index); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
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parents:
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diff
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|
3838 if (m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3839 return m; |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
changeset
|
3840 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3841 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3842 // None found, return null for the caller to handle. |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3843 return NULL; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3844 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3845 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3846 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3847 Method* InstanceKlass::method_with_orig_idnum(int idnum, int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3848 InstanceKlass* holder = get_klass_version(version); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3849 if (holder == NULL) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3850 return NULL; // The version of klass is gone, no method is found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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changeset
|
3851 } |
1a9c5e6e13b7
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sspitsyn
parents:
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diff
changeset
|
3852 Method* method = holder->method_with_orig_idnum(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3853 return method; |
1a9c5e6e13b7
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sspitsyn
parents:
22886
diff
changeset
|
3854 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
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diff
changeset
|
3855 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
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diff
changeset
|
3856 |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3857 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3858 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3859 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3860 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3861 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3862 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3863 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
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11096
diff
changeset
|
3864 |
0 | 3865 |
3866 // Construct a PreviousVersionNode entry for the array hung off | |
6725
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|
3867 // the InstanceKlass. |
da91efe96a93
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|
3868 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
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coleenp
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|
3869 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3870 |
3871 _prev_constant_pool = prev_constant_pool; | |
3872 _prev_EMCP_methods = prev_EMCP_methods; | |
3873 } | |
3874 | |
3875 | |
3876 // Destroy a PreviousVersionNode | |
3877 PreviousVersionNode::~PreviousVersionNode() { | |
3878 if (_prev_constant_pool != NULL) { | |
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|
3879 _prev_constant_pool = NULL; |
0 | 3880 } |
3881 | |
3882 if (_prev_EMCP_methods != NULL) { | |
3883 delete _prev_EMCP_methods; | |
3884 } | |
3885 } | |
3886 | |
3887 // Construct a helper for walking the previous versions array | |
12281
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|
3888 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
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coleenp
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|
3889 _thread = thread; |
0 | 3890 _previous_versions = ik->previous_versions(); |
3891 _current_index = 0; | |
3892 _current_p = NULL; | |
12281
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|
3893 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3894 } |
3895 | |
3896 | |
3897 // Return the interesting information for the next previous version | |
3898 // of the klass. Returns NULL if there are no more previous versions. | |
12281
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|
3899 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3900 if (_previous_versions == NULL) { |
3901 // no previous versions so nothing to return | |
3902 return NULL; | |
3903 } | |
3904 | |
12281
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|
3905 _current_p = NULL; // reset to NULL |
4f9a42c33738
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coleenp
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diff
changeset
|
3906 _current_constant_pool_handle = NULL; |
0 | 3907 |
3908 int length = _previous_versions->length(); | |
3909 | |
3910 while (_current_index < length) { | |
3911 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
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|
3912 |
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changeset
|
3913 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
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|
3914 // which keeps all the methods from being deallocated. |
4f9a42c33738
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coleenp
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diff
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|
3915 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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coleenp
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|
3916 _current_p = pv_node; |
4f9a42c33738
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coleenp
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12067
diff
changeset
|
3917 return pv_node; |
0 | 3918 } |
3919 | |
3920 return NULL; | |
3921 } // end next_previous_version() |