Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 20788:c4f1e23c4139
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author | asaha |
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date | Tue, 16 Dec 2014 14:02:00 -0800 |
parents | fe34c5ab0b35 9906d432d6db |
children | 7848fc12602b 7622232b7efa |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/iterator.inline.hpp" |
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39 #include "memory/metadataFactory.hpp" |
1972 | 40 #include "memory/oopFactory.hpp" |
3938 | 41 #include "oops/fieldStreams.hpp" |
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42 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 43 #include "oops/instanceKlass.hpp" |
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44 #include "oops/instanceMirrorKlass.hpp" |
1972 | 45 #include "oops/instanceOop.hpp" |
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46 #include "oops/klass.inline.hpp" |
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47 #include "oops/method.hpp" |
1972 | 48 #include "oops/oop.inline.hpp" |
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49 #include "oops/symbol.hpp" |
1972 | 50 #include "prims/jvmtiExport.hpp" |
51 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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52 #include "prims/jvmtiRedefineClasses.hpp" |
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53 #include "prims/methodComparator.hpp" |
1972 | 54 #include "runtime/fieldDescriptor.hpp" |
55 #include "runtime/handles.inline.hpp" | |
56 #include "runtime/javaCalls.hpp" | |
57 #include "runtime/mutexLocker.hpp" | |
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58 #include "runtime/orderAccess.inline.hpp" |
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59 #include "runtime/thread.inline.hpp" |
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60 #include "services/classLoadingService.hpp" |
1972 | 61 #include "services/threadService.hpp" |
62 #include "utilities/dtrace.hpp" | |
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63 #include "utilities/macros.hpp" |
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64 #if INCLUDE_ALL_GCS |
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65 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 66 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
67 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
68 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
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69 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
1972 | 70 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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71 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 72 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
73 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
74 #include "oops/oop.pcgc.inline.hpp" | |
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75 #endif // INCLUDE_ALL_GCS |
1972 | 76 #ifdef COMPILER1 |
77 #include "c1/c1_Compiler.hpp" | |
78 #endif | |
0 | 79 |
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80 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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81 |
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82 #ifdef DTRACE_ENABLED |
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83 |
4006 | 84 #ifndef USDT2 |
85 | |
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86 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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87 char*, intptr_t, oop, intptr_t); |
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88 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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89 char*, intptr_t, oop, intptr_t, int); |
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90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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91 char*, intptr_t, oop, intptr_t, int); |
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92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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93 char*, intptr_t, oop, intptr_t, int); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 |
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103 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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104 { \ |
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105 char* data = NULL; \ |
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106 int len = 0; \ |
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107 Symbol* name = (clss)->name(); \ |
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108 if (name != NULL) { \ |
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109 data = (char*)name->bytes(); \ |
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110 len = name->utf8_length(); \ |
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111 } \ |
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112 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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113 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ |
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114 } |
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115 |
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116 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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117 { \ |
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118 char* data = NULL; \ |
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119 int len = 0; \ |
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120 Symbol* name = (clss)->name(); \ |
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121 if (name != NULL) { \ |
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122 data = (char*)name->bytes(); \ |
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123 len = name->utf8_length(); \ |
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124 } \ |
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125 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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126 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ |
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127 } |
4006 | 128 #else /* USDT2 */ |
129 | |
130 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
131 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
132 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
133 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
134 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
135 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
136 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
137 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
138 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
139 { \ | |
140 char* data = NULL; \ | |
141 int len = 0; \ | |
142 Symbol* name = (clss)->name(); \ | |
143 if (name != NULL) { \ | |
144 data = (char*)name->bytes(); \ | |
145 len = name->utf8_length(); \ | |
146 } \ | |
147 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
148 data, len, (clss)->class_loader(), thread_type); \ | |
149 } | |
150 | |
151 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
152 { \ | |
153 char* data = NULL; \ | |
154 int len = 0; \ | |
155 Symbol* name = (clss)->name(); \ | |
156 if (name != NULL) { \ | |
157 data = (char*)name->bytes(); \ | |
158 len = name->utf8_length(); \ | |
159 } \ | |
160 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
161 data, len, (clss)->class_loader(), thread_type, wait); \ | |
162 } | |
163 #endif /* USDT2 */ | |
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164 |
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165 #else // ndef DTRACE_ENABLED |
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166 |
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167 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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168 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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169 |
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170 #endif // ndef DTRACE_ENABLED |
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171 |
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172 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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173 |
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174 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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175 ClassLoaderData* loader_data, |
8031 | 176 int vtable_len, |
177 int itable_len, | |
178 int static_field_size, | |
179 int nonstatic_oop_map_size, | |
180 ReferenceType rt, | |
181 AccessFlags access_flags, | |
182 Symbol* name, | |
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183 Klass* super_klass, |
8031 | 184 bool is_anonymous, |
185 TRAPS) { | |
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186 |
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187 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 188 access_flags.is_interface(), is_anonymous); |
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189 |
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190 // Allocation |
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191 InstanceKlass* ik; |
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192 if (rt == REF_NONE) { |
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193 if (name == vmSymbols::java_lang_Class()) { |
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194 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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195 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 196 access_flags, is_anonymous); |
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197 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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198 (SystemDictionary::ClassLoader_klass_loaded() && |
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199 super_klass != NULL && |
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200 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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201 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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202 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 203 access_flags, is_anonymous); |
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204 } else { |
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205 // normal class |
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206 ik = new (loader_data, size, THREAD) InstanceKlass( |
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207 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 208 access_flags, is_anonymous); |
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209 } |
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210 } else { |
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211 // reference klass |
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212 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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213 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 214 access_flags, is_anonymous); |
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215 } |
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216 |
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217 // Check for pending exception before adding to the loader data and incrementing |
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218 // class count. Can get OOM here. |
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219 if (HAS_PENDING_EXCEPTION) { |
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220 return NULL; |
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221 } |
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222 |
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223 // Add all classes to our internal class loader list here, |
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224 // including classes in the bootstrap (NULL) class loader. |
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225 loader_data->add_class(ik); |
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226 |
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227 Atomic::inc(&_total_instanceKlass_count); |
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228 return ik; |
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229 } |
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230 |
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231 |
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232 // copy method ordering from resource area to Metaspace |
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233 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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234 if (m != NULL) { |
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235 // allocate a new array and copy contents (memcpy?) |
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236 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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237 for (int i = 0; i < m->length(); i++) { |
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238 _method_ordering->at_put(i, m->at(i)); |
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239 } |
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240 } else { |
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241 _method_ordering = Universe::the_empty_int_array(); |
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242 } |
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243 } |
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244 |
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245 // create a new array of vtable_indices for default methods |
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246 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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247 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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248 assert(default_vtable_indices() == NULL, "only create once"); |
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249 set_default_vtable_indices(vtable_indices); |
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250 return vtable_indices; |
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251 } |
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252 |
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253 InstanceKlass::InstanceKlass(int vtable_len, |
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254 int itable_len, |
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255 int static_field_size, |
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256 int nonstatic_oop_map_size, |
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257 ReferenceType rt, |
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258 AccessFlags access_flags, |
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259 bool is_anonymous) { |
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260 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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261 |
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262 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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263 access_flags.is_interface(), is_anonymous); |
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264 |
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265 set_vtable_length(vtable_len); |
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266 set_itable_length(itable_len); |
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267 set_static_field_size(static_field_size); |
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268 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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269 set_access_flags(access_flags); |
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270 _misc_flags = 0; // initialize to zero |
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271 set_is_anonymous(is_anonymous); |
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272 assert(size() == iksize, "wrong size for object"); |
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273 |
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274 set_array_klasses(NULL); |
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275 set_methods(NULL); |
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276 set_method_ordering(NULL); |
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277 set_default_methods(NULL); |
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278 set_default_vtable_indices(NULL); |
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279 set_local_interfaces(NULL); |
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280 set_transitive_interfaces(NULL); |
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281 init_implementor(); |
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282 set_fields(NULL, 0); |
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283 set_constants(NULL); |
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284 set_class_loader_data(NULL); |
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285 set_source_file_name_index(0); |
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286 set_source_debug_extension(NULL, 0); |
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287 set_array_name(NULL); |
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288 set_inner_classes(NULL); |
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289 set_static_oop_field_count(0); |
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290 set_nonstatic_field_size(0); |
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291 set_is_marked_dependent(false); |
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292 set_has_unloaded_dependent(false); |
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293 set_init_state(InstanceKlass::allocated); |
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294 set_init_thread(NULL); |
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295 set_reference_type(rt); |
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296 set_oop_map_cache(NULL); |
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297 set_jni_ids(NULL); |
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298 set_osr_nmethods_head(NULL); |
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299 set_breakpoints(NULL); |
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300 init_previous_versions(); |
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301 set_generic_signature_index(0); |
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302 release_set_methods_jmethod_ids(NULL); |
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303 set_annotations(NULL); |
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304 set_jvmti_cached_class_field_map(NULL); |
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305 set_initial_method_idnum(0); |
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306 _dependencies = NULL; |
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307 set_jvmti_cached_class_field_map(NULL); |
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308 set_cached_class_file(NULL); |
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309 set_initial_method_idnum(0); |
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310 set_minor_version(0); |
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311 set_major_version(0); |
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312 NOT_PRODUCT(_verify_count = 0;) |
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313 |
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314 // initialize the non-header words to zero |
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315 intptr_t* p = (intptr_t*)this; |
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316 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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317 p[index] = NULL_WORD; |
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318 } |
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319 |
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320 // Set temporary value until parseClassFile updates it with the real instance |
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321 // size. |
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322 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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323 } |
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324 |
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325 |
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326 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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327 Array<Method*>* methods) { |
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328 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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329 !methods->is_shared()) { |
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330 for (int i = 0; i < methods->length(); i++) { |
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331 Method* method = methods->at(i); |
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332 if (method == NULL) continue; // maybe null if error processing |
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333 // Only want to delete methods that are not executing for RedefineClasses. |
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334 // The previous version will point to them so they're not totally dangling |
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335 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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336 MetadataFactory::free_metadata(loader_data, method); |
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337 } |
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338 MetadataFactory::free_array<Method*>(loader_data, methods); |
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339 } |
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340 } |
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341 |
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342 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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343 Klass* super_klass, |
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344 Array<Klass*>* local_interfaces, |
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345 Array<Klass*>* transitive_interfaces) { |
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346 // Only deallocate transitive interfaces if not empty, same as super class |
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347 // or same as local interfaces. See code in parseClassFile. |
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348 Array<Klass*>* ti = transitive_interfaces; |
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349 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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350 // check that the interfaces don't come from super class |
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351 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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352 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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353 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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354 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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355 } |
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356 } |
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357 |
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358 // local interfaces can be empty |
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359 if (local_interfaces != Universe::the_empty_klass_array() && |
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360 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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361 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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362 } |
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363 } |
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364 |
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365 // This function deallocates the metadata and C heap pointers that the |
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366 // InstanceKlass points to. |
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367 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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368 |
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369 // Orphan the mirror first, CMS thinks it's still live. |
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370 if (java_mirror() != NULL) { |
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371 java_lang_Class::set_klass(java_mirror(), NULL); |
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372 } |
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373 |
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374 // Need to take this class off the class loader data list. |
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375 loader_data->remove_class(this); |
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376 |
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377 // The array_klass for this class is created later, after error handling. |
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378 // For class redefinition, we keep the original class so this scratch class |
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379 // doesn't have an array class. Either way, assert that there is nothing |
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380 // to deallocate. |
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381 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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382 |
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383 // Release C heap allocated data that this might point to, which includes |
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384 // reference counting symbol names. |
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385 release_C_heap_structures(); |
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386 |
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387 deallocate_methods(loader_data, methods()); |
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388 set_methods(NULL); |
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389 |
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390 if (method_ordering() != NULL && |
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391 method_ordering() != Universe::the_empty_int_array() && |
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392 !method_ordering()->is_shared()) { |
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393 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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394 } |
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395 set_method_ordering(NULL); |
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396 |
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397 // default methods can be empty |
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398 if (default_methods() != NULL && |
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399 default_methods() != Universe::the_empty_method_array() && |
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400 !default_methods()->is_shared()) { |
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401 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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402 } |
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403 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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404 set_default_methods(NULL); |
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405 |
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406 // default methods vtable indices can be empty |
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407 if (default_vtable_indices() != NULL && |
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408 !default_vtable_indices()->is_shared()) { |
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409 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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410 } |
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411 set_default_vtable_indices(NULL); |
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412 |
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413 |
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414 // This array is in Klass, but remove it with the InstanceKlass since |
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415 // this place would be the only caller and it can share memory with transitive |
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416 // interfaces. |
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417 if (secondary_supers() != NULL && |
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418 secondary_supers() != Universe::the_empty_klass_array() && |
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419 secondary_supers() != transitive_interfaces() && |
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420 !secondary_supers()->is_shared()) { |
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421 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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422 } |
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423 set_secondary_supers(NULL); |
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424 |
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425 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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426 set_transitive_interfaces(NULL); |
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427 set_local_interfaces(NULL); |
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428 |
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429 if (fields() != NULL && !fields()->is_shared()) { |
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430 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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431 } |
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432 set_fields(NULL, 0); |
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433 |
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434 // If a method from a redefined class is using this constant pool, don't |
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435 // delete it, yet. The new class's previous version will point to this. |
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436 if (constants() != NULL) { |
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437 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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438 if (!constants()->is_shared()) { |
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439 MetadataFactory::free_metadata(loader_data, constants()); |
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440 } |
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441 set_constants(NULL); |
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442 } |
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443 |
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444 if (inner_classes() != NULL && |
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445 inner_classes() != Universe::the_empty_short_array() && |
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446 !inner_classes()->is_shared()) { |
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447 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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448 } |
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449 set_inner_classes(NULL); |
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450 |
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451 // We should deallocate the Annotations instance if it's not in shared spaces. |
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452 if (annotations() != NULL && !annotations()->is_shared()) { |
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453 MetadataFactory::free_metadata(loader_data, annotations()); |
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454 } |
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455 set_annotations(NULL); |
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456 } |
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457 |
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458 bool InstanceKlass::should_be_initialized() const { |
0 | 459 return !is_initialized(); |
460 } | |
461 | |
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462 klassVtable* InstanceKlass::vtable() const { |
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463 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 464 } |
465 | |
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466 klassItable* InstanceKlass::itable() const { |
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467 return new klassItable(instanceKlassHandle(this)); |
0 | 468 } |
469 | |
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470 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 471 if (!EagerInitialization) return; |
472 | |
473 if (this->is_not_initialized()) { | |
474 // abort if the the class has a class initializer | |
475 if (this->class_initializer() != NULL) return; | |
476 | |
477 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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478 Klass* super = this->super(); |
0 | 479 if (super == NULL) return; |
480 | |
481 // abort if the super class should be initialized | |
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482 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 483 |
484 // call body to expose the this pointer | |
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485 instanceKlassHandle this_oop(thread, this); |
0 | 486 eager_initialize_impl(this_oop); |
487 } | |
488 } | |
489 | |
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490 // JVMTI spec thinks there are signers and protection domain in the |
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491 // instanceKlass. These accessors pretend these fields are there. |
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492 // The hprof specification also thinks these fields are in InstanceKlass. |
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493 oop InstanceKlass::protection_domain() const { |
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494 // return the protection_domain from the mirror |
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495 return java_lang_Class::protection_domain(java_mirror()); |
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496 } |
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497 |
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498 // To remove these from requires an incompatible change and CCC request. |
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499 objArrayOop InstanceKlass::signers() const { |
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500 // return the signers from the mirror |
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501 return java_lang_Class::signers(java_mirror()); |
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502 } |
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503 |
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504 oop InstanceKlass::init_lock() const { |
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505 // return the init lock from the mirror |
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506 oop lock = java_lang_Class::init_lock(java_mirror()); |
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507 // Prevent reordering with any access of initialization state |
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508 OrderAccess::loadload(); |
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509 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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510 "only fully initialized state can have a null lock"); |
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511 return lock; |
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512 } |
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513 |
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514 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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515 // threads to get this lock will see a null lock and will not lock. |
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516 // That's okay because they all check for initialized state after getting |
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517 // the lock and return. |
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518 void InstanceKlass::fence_and_clear_init_lock() { |
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519 // make sure previous stores are all done, notably the init_state. |
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520 OrderAccess::storestore(); |
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521 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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522 assert(!is_not_initialized(), "class must be initialized now"); |
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523 } |
0 | 524 |
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525 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 526 EXCEPTION_MARK; |
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527 oop init_lock = this_oop->init_lock(); |
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528 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 529 |
530 // abort if someone beat us to the initialization | |
531 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
532 | |
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533 ClassState old_state = this_oop->init_state(); |
0 | 534 link_class_impl(this_oop, true, THREAD); |
535 if (HAS_PENDING_EXCEPTION) { | |
536 CLEAR_PENDING_EXCEPTION; | |
537 // Abort if linking the class throws an exception. | |
538 | |
539 // Use a test to avoid redundantly resetting the state if there's | |
540 // no change. Set_init_state() asserts that state changes make | |
541 // progress, whereas here we might just be spinning in place. | |
542 if( old_state != this_oop->_init_state ) | |
543 this_oop->set_init_state (old_state); | |
544 } else { | |
545 // linking successfull, mark class as initialized | |
546 this_oop->set_init_state (fully_initialized); | |
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547 this_oop->fence_and_clear_init_lock(); |
0 | 548 // trace |
549 if (TraceClassInitialization) { | |
550 ResourceMark rm(THREAD); | |
551 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
552 } | |
553 } | |
554 } | |
555 | |
556 | |
557 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
558 // process. The step comments refers to the procedure described in that section. | |
559 // Note: implementation moved to static method to expose the this pointer. | |
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560 void InstanceKlass::initialize(TRAPS) { |
0 | 561 if (this->should_be_initialized()) { |
562 HandleMark hm(THREAD); | |
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563 instanceKlassHandle this_oop(THREAD, this); |
0 | 564 initialize_impl(this_oop, CHECK); |
565 // Note: at this point the class may be initialized | |
566 // OR it may be in the state of being initialized | |
567 // in case of recursive initialization! | |
568 } else { | |
569 assert(is_initialized(), "sanity check"); | |
570 } | |
571 } | |
572 | |
573 | |
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574 bool InstanceKlass::verify_code( |
0 | 575 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
576 // 1) Verify the bytecodes | |
577 Verifier::Mode mode = | |
578 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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579 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 580 } |
581 | |
582 | |
583 // Used exclusively by the shared spaces dump mechanism to prevent | |
584 // classes mapped into the shared regions in new VMs from appearing linked. | |
585 | |
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586 void InstanceKlass::unlink_class() { |
0 | 587 assert(is_linked(), "must be linked"); |
588 _init_state = loaded; | |
589 } | |
590 | |
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591 void InstanceKlass::link_class(TRAPS) { |
0 | 592 assert(is_loaded(), "must be loaded"); |
593 if (!is_linked()) { | |
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594 HandleMark hm(THREAD); |
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595 instanceKlassHandle this_oop(THREAD, this); |
0 | 596 link_class_impl(this_oop, true, CHECK); |
597 } | |
598 } | |
599 | |
600 // Called to verify that a class can link during initialization, without | |
601 // throwing a VerifyError. | |
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602 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 603 assert(is_loaded(), "must be loaded"); |
604 if (!is_linked()) { | |
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605 HandleMark hm(THREAD); |
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606 instanceKlassHandle this_oop(THREAD, this); |
0 | 607 link_class_impl(this_oop, false, CHECK_false); |
608 } | |
609 return is_linked(); | |
610 } | |
611 | |
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612 bool InstanceKlass::link_class_impl( |
0 | 613 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
614 // check for error state | |
615 if (this_oop->is_in_error_state()) { | |
616 ResourceMark rm(THREAD); | |
617 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
618 this_oop->external_name(), false); | |
619 } | |
620 // return if already verified | |
621 if (this_oop->is_linked()) { | |
622 return true; | |
623 } | |
624 | |
625 // Timing | |
626 // timer handles recursion | |
627 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
628 JavaThread* jt = (JavaThread*)THREAD; | |
629 | |
630 // link super class before linking this class | |
631 instanceKlassHandle super(THREAD, this_oop->super()); | |
632 if (super.not_null()) { | |
633 if (super->is_interface()) { // check if super class is an interface | |
634 ResourceMark rm(THREAD); | |
635 Exceptions::fthrow( | |
636 THREAD_AND_LOCATION, | |
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637 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 638 "class %s has interface %s as super class", |
639 this_oop->external_name(), | |
640 super->external_name() | |
641 ); | |
642 return false; | |
643 } | |
644 | |
645 link_class_impl(super, throw_verifyerror, CHECK_false); | |
646 } | |
647 | |
648 // link all interfaces implemented by this class before linking this class | |
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649 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 650 int num_interfaces = interfaces->length(); |
651 for (int index = 0; index < num_interfaces; index++) { | |
652 HandleMark hm(THREAD); | |
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653 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 654 link_class_impl(ih, throw_verifyerror, CHECK_false); |
655 } | |
656 | |
657 // in case the class is linked in the process of linking its superclasses | |
658 if (this_oop->is_linked()) { | |
659 return true; | |
660 } | |
661 | |
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662 // trace only the link time for this klass that includes |
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663 // the verification time |
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664 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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665 ClassLoader::perf_class_link_selftime(), |
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666 ClassLoader::perf_classes_linked(), |
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667 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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668 jt->get_thread_stat()->perf_timers_addr(), |
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669 PerfClassTraceTime::CLASS_LINK); |
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670 |
0 | 671 // verification & rewriting |
672 { | |
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673 oop init_lock = this_oop->init_lock(); |
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674 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 675 // rewritten will have been set if loader constraint error found |
676 // on an earlier link attempt | |
677 // don't verify or rewrite if already rewritten | |
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678 |
0 | 679 if (!this_oop->is_linked()) { |
680 if (!this_oop->is_rewritten()) { | |
681 { | |
682 // Timer includes any side effects of class verification (resolution, | |
683 // etc), but not recursive entry into verify_code(). | |
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684 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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685 ClassLoader::perf_class_verify_selftime(), |
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686 ClassLoader::perf_classes_verified(), |
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687 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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688 jt->get_thread_stat()->perf_timers_addr(), |
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689 PerfClassTraceTime::CLASS_VERIFY); |
0 | 690 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
691 if (!verify_ok) { | |
692 return false; | |
693 } | |
694 } | |
695 | |
696 // Just in case a side-effect of verify linked this class already | |
697 // (which can sometimes happen since the verifier loads classes | |
698 // using custom class loaders, which are free to initialize things) | |
699 if (this_oop->is_linked()) { | |
700 return true; | |
701 } | |
702 | |
703 // also sets rewritten | |
704 this_oop->rewrite_class(CHECK_false); | |
705 } | |
706 | |
3748 | 707 // relocate jsrs and link methods after they are all rewritten |
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708 this_oop->link_methods(CHECK_false); |
3748 | 709 |
0 | 710 // Initialize the vtable and interface table after |
711 // methods have been rewritten since rewrite may | |
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712 // fabricate new Method*s. |
0 | 713 // also does loader constraint checking |
714 if (!this_oop()->is_shared()) { | |
715 ResourceMark rm(THREAD); | |
716 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
717 this_oop->itable()->initialize_itable(true, CHECK_false); | |
718 } | |
719 #ifdef ASSERT | |
720 else { | |
721 ResourceMark rm(THREAD); | |
722 this_oop->vtable()->verify(tty, true); | |
723 // In case itable verification is ever added. | |
724 // this_oop->itable()->verify(tty, true); | |
725 } | |
726 #endif | |
727 this_oop->set_init_state(linked); | |
728 if (JvmtiExport::should_post_class_prepare()) { | |
729 Thread *thread = THREAD; | |
730 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
731 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
732 } | |
733 } | |
734 } | |
735 return true; | |
736 } | |
737 | |
738 | |
739 // Rewrite the byte codes of all of the methods of a class. | |
740 // The rewriter must be called exactly once. Rewriting must happen after | |
741 // verification but before the first method of the class is executed. | |
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742 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 743 assert(is_loaded(), "must be loaded"); |
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744 instanceKlassHandle this_oop(THREAD, this); |
0 | 745 if (this_oop->is_rewritten()) { |
746 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
747 return; | |
748 } | |
3748 | 749 Rewriter::rewrite(this_oop, CHECK); |
0 | 750 this_oop->set_rewritten(); |
751 } | |
752 | |
3748 | 753 // Now relocate and link method entry points after class is rewritten. |
754 // This is outside is_rewritten flag. In case of an exception, it can be | |
755 // executed more than once. | |
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756 void InstanceKlass::link_methods(TRAPS) { |
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757 int len = methods()->length(); |
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758 for (int i = len-1; i >= 0; i--) { |
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759 methodHandle m(THREAD, methods()->at(i)); |
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760 |
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761 // Set up method entry points for compiler and interpreter . |
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762 m->link_method(m, CHECK); |
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763 |
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764 // This is for JVMTI and unrelated to relocator but the last thing we do |
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765 #ifdef ASSERT |
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766 if (StressMethodComparator) { |
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767 ResourceMark rm(THREAD); |
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768 static int nmc = 0; |
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769 for (int j = i; j >= 0 && j >= i-4; j--) { |
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770 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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771 bool z = MethodComparator::methods_EMCP(m(), |
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772 methods()->at(j)); |
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773 if (j == i && !z) { |
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774 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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775 assert(z, "method must compare equal to itself"); |
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776 } |
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777 } |
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778 } |
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779 #endif //ASSERT |
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780 } |
3748 | 781 } |
782 | |
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783 // Eagerly initialize superinterfaces that declare default methods (concrete instance: any access) |
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784 void InstanceKlass::initialize_super_interfaces(instanceKlassHandle this_oop, TRAPS) { |
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785 if (this_oop->has_default_methods()) { |
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786 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { |
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787 Klass* iface = this_oop->local_interfaces()->at(i); |
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788 InstanceKlass* ik = InstanceKlass::cast(iface); |
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789 if (ik->should_be_initialized()) { |
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790 if (ik->has_default_methods()) { |
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791 ik->initialize_super_interfaces(ik, THREAD); |
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792 } |
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793 // Only initialize() interfaces that "declare" concrete methods. |
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794 // has_default_methods drives searching superinterfaces since it |
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795 // means has_default_methods in its superinterface hierarchy |
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796 if (!HAS_PENDING_EXCEPTION && ik->declares_default_methods()) { |
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797 ik->initialize(THREAD); |
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798 } |
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799 if (HAS_PENDING_EXCEPTION) { |
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800 Handle e(THREAD, PENDING_EXCEPTION); |
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801 CLEAR_PENDING_EXCEPTION; |
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802 { |
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803 EXCEPTION_MARK; |
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804 // Locks object, set state, and notify all waiting threads |
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805 this_oop->set_initialization_state_and_notify( |
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806 initialization_error, THREAD); |
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807 |
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808 // ignore any exception thrown, superclass initialization error is |
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809 // thrown below |
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810 CLEAR_PENDING_EXCEPTION; |
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811 } |
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812 THROW_OOP(e()); |
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813 } |
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814 } |
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815 } |
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816 } |
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817 } |
0 | 818 |
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819 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 820 // Make sure klass is linked (verified) before initialization |
821 // A class could already be verified, since it has been reflected upon. | |
822 this_oop->link_class(CHECK); | |
823 | |
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824 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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825 |
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826 bool wait = false; |
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827 |
0 | 828 // refer to the JVM book page 47 for description of steps |
829 // Step 1 | |
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830 { |
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831 oop init_lock = this_oop->init_lock(); |
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832 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 833 |
834 Thread *self = THREAD; // it's passed the current thread | |
835 | |
836 // Step 2 | |
837 // If we were to use wait() instead of waitInterruptibly() then | |
838 // we might end up throwing IE from link/symbol resolution sites | |
839 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
840 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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841 wait = true; |
0 | 842 ol.waitUninterruptibly(CHECK); |
843 } | |
844 | |
845 // Step 3 | |
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846 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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847 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 848 return; |
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849 } |
0 | 850 |
851 // Step 4 | |
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852 if (this_oop->is_initialized()) { |
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853 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 854 return; |
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855 } |
0 | 856 |
857 // Step 5 | |
858 if (this_oop->is_in_error_state()) { | |
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859 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 860 ResourceMark rm(THREAD); |
861 const char* desc = "Could not initialize class "; | |
862 const char* className = this_oop->external_name(); | |
863 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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864 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 865 if (NULL == message) { |
866 // Out of memory: can't create detailed error message | |
867 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
868 } else { | |
869 jio_snprintf(message, msglen, "%s%s", desc, className); | |
870 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
871 } | |
872 } | |
873 | |
874 // Step 6 | |
875 this_oop->set_init_state(being_initialized); | |
876 this_oop->set_init_thread(self); | |
877 } | |
878 | |
879 // Step 7 | |
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880 Klass* super_klass = this_oop->super(); |
6983 | 881 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
882 super_klass->initialize(THREAD); | |
0 | 883 |
884 if (HAS_PENDING_EXCEPTION) { | |
885 Handle e(THREAD, PENDING_EXCEPTION); | |
886 CLEAR_PENDING_EXCEPTION; | |
887 { | |
888 EXCEPTION_MARK; | |
889 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
890 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
891 } | |
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892 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 893 THROW_OOP(e()); |
894 } | |
895 } | |
896 | |
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897 // Recursively initialize any superinterfaces that declare default methods |
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898 // Only need to recurse if has_default_methods which includes declaring and |
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899 // inheriting default methods |
6934 | 900 if (this_oop->has_default_methods()) { |
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901 this_oop->initialize_super_interfaces(this_oop, CHECK); |
6934 | 902 } |
903 | |
0 | 904 // Step 8 |
905 { | |
906 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
907 JavaThread* jt = (JavaThread*)THREAD; | |
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908 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 909 // Timer includes any side effects of class initialization (resolution, |
910 // etc), but not recursive entry into call_class_initializer(). | |
875
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911 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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912 ClassLoader::perf_class_init_selftime(), |
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913 ClassLoader::perf_classes_inited(), |
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914 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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915 jt->get_thread_stat()->perf_timers_addr(), |
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916 PerfClassTraceTime::CLASS_CLINIT); |
0 | 917 this_oop->call_class_initializer(THREAD); |
918 } | |
919 | |
920 // Step 9 | |
921 if (!HAS_PENDING_EXCEPTION) { | |
922 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
923 { ResourceMark rm(THREAD); | |
924 debug_only(this_oop->vtable()->verify(tty, true);) | |
925 } | |
926 } | |
927 else { | |
928 // Step 10 and 11 | |
929 Handle e(THREAD, PENDING_EXCEPTION); | |
930 CLEAR_PENDING_EXCEPTION; | |
931 { | |
932 EXCEPTION_MARK; | |
933 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
934 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
935 } | |
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936 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 937 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 938 THROW_OOP(e()); |
939 } else { | |
940 JavaCallArguments args(e); | |
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941 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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942 vmSymbols::throwable_void_signature(), |
0 | 943 &args); |
944 } | |
945 } | |
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946 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 947 } |
948 | |
949 | |
950 // Note: implementation moved to static method to expose the this pointer. | |
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951 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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952 instanceKlassHandle kh(THREAD, this); |
0 | 953 set_initialization_state_and_notify_impl(kh, state, CHECK); |
954 } | |
955 | |
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956 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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957 oop init_lock = this_oop->init_lock(); |
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958 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 959 this_oop->set_init_state(state); |
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960 this_oop->fence_and_clear_init_lock(); |
0 | 961 ol.notify_all(CHECK); |
962 } | |
963 | |
5998
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964 // The embedded _implementor field can only record one implementor. |
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965 // When there are more than one implementors, the _implementor field |
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966 // is set to the interface Klass* itself. Following are the possible |
5998
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967 // values for the _implementor field: |
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968 // NULL - no implementor |
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969 // implementor Klass* - one implementor |
5998
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970 // self - more than one implementor |
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971 // |
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972 // The _implementor field only exists for interfaces. |
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973 void InstanceKlass::add_implementor(Klass* k) { |
0 | 974 assert(Compile_lock->owned_by_self(), ""); |
5998
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975 assert(is_interface(), "not interface"); |
0 | 976 // Filter out my subinterfaces. |
977 // (Note: Interfaces are never on the subklass list.) | |
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978 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 979 |
980 // Filter out subclasses whose supers already implement me. | |
981 // (Note: CHA must walk subclasses of direct implementors | |
982 // in order to locate indirect implementors.) | |
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983 Klass* sk = InstanceKlass::cast(k)->super(); |
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984 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 985 // We only need to check one immediate superclass, since the |
986 // implements_interface query looks at transitive_interfaces. | |
987 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
988 return; | |
989 | |
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990 Klass* ik = implementor(); |
5998
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991 if (ik == NULL) { |
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992 set_implementor(k); |
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993 } else if (ik != this) { |
5998
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994 // There is already an implementor. Use itself as an indicator of |
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995 // more than one implementors. |
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996 set_implementor(this); |
0 | 997 } |
998 | |
999 // The implementor also implements the transitive_interfaces | |
1000 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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1001 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 1002 } |
1003 } | |
1004 | |
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1005 void InstanceKlass::init_implementor() { |
5998
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1006 if (is_interface()) { |
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1007 set_implementor(NULL); |
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1008 } |
0 | 1009 } |
1010 | |
1011 | |
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1012 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1013 // link this class into the implementors list of every interface it implements |
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1014 Klass* this_as_klass_oop = this; |
0 | 1015 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1016 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1017 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1018 assert(interf->is_interface(), "expected interface"); |
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1019 interf->add_implementor(this_as_klass_oop); |
0 | 1020 } |
1021 } | |
1022 | |
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1023 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1024 if (is_interface()) |
1025 return false; | |
1026 else | |
1027 return Klass::can_be_primary_super_slow(); | |
1028 } | |
1029 | |
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1030 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1031 // The secondaries are the implemented interfaces. |
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1032 InstanceKlass* ik = InstanceKlass::cast(this); |
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1033 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1034 int num_secondaries = num_extra_slots + interfaces->length(); |
1035 if (num_secondaries == 0) { | |
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1036 // Must share this for correct bootstrapping! |
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1037 set_secondary_supers(Universe::the_empty_klass_array()); |
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1038 return NULL; |
0 | 1039 } else if (num_extra_slots == 0) { |
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1040 // The secondary super list is exactly the same as the transitive interfaces. |
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1041 // Redefine classes has to be careful not to delete this! |
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1042 set_secondary_supers(interfaces); |
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1043 return NULL; |
0 | 1044 } else { |
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1045 // Copy transitive interfaces to a temporary growable array to be constructed |
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1046 // into the secondary super list with extra slots. |
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1047 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1048 for (int i = 0; i < interfaces->length(); i++) { |
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1049 secondaries->push(interfaces->at(i)); |
0 | 1050 } |
1051 return secondaries; | |
1052 } | |
1053 } | |
1054 | |
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1055 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1056 if (k->is_interface()) { |
0 | 1057 return implements_interface(k); |
1058 } else { | |
1059 return Klass::compute_is_subtype_of(k); | |
1060 } | |
1061 } | |
1062 | |
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1063 bool InstanceKlass::implements_interface(Klass* k) const { |
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1064 if (this == k) return true; |
6983 | 1065 assert(k->is_interface(), "should be an interface class"); |
0 | 1066 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1067 if (transitive_interfaces()->at(i) == k) { |
0 | 1068 return true; |
1069 } | |
1070 } | |
1071 return false; | |
1072 } | |
1073 | |
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1074 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1075 // Verify direct super interface |
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1076 if (this == k) return true; |
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1077 assert(k->is_interface(), "should be an interface class"); |
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1078 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1079 if (local_interfaces()->at(i) == k) { |
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1080 return true; |
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1081 } |
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1082 } |
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1083 return false; |
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1084 } |
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1085 |
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1086 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1087 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1088 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1089 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1090 JvmtiExport::post_array_size_exhausted(); |
0 | 1091 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1092 } | |
1093 int size = objArrayOopDesc::object_size(length); | |
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1094 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1095 KlassHandle h_ak (THREAD, ak); |
1096 objArrayOop o = | |
1097 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1098 return o; | |
1099 } | |
1100 | |
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1101 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1102 if (TraceFinalizerRegistration) { |
1103 tty->print("Registered "); | |
1104 i->print_value_on(tty); | |
1105 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1106 } | |
1107 instanceHandle h_i(THREAD, i); | |
1108 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1109 JavaValue result(T_VOID); | |
1110 JavaCallArguments args(h_i); | |
1111 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1112 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1113 return h_i(); | |
1114 } | |
1115 | |
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1116 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1117 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1118 int size = size_helper(); // Query before forming handle. | |
1119 | |
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1120 KlassHandle h_k(THREAD, this); |
0 | 1121 |
1122 instanceOop i; | |
1123 | |
1124 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1125 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1126 i = register_finalizer(i, CHECK_NULL); | |
1127 } | |
1128 return i; | |
1129 } | |
1130 | |
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1131 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1132 if (is_interface() || is_abstract()) { |
1133 ResourceMark rm(THREAD); | |
1134 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1135 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1136 } | |
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1137 if (this == SystemDictionary::Class_klass()) { |
0 | 1138 ResourceMark rm(THREAD); |
1139 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1140 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1141 } | |
1142 } | |
1143 | |
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1144 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1145 instanceKlassHandle this_oop(THREAD, this); |
0 | 1146 return array_klass_impl(this_oop, or_null, n, THREAD); |
1147 } | |
1148 | |
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1149 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1150 if (this_oop->array_klasses() == NULL) { |
1151 if (or_null) return NULL; | |
1152 | |
1153 ResourceMark rm; | |
1154 JavaThread *jt = (JavaThread *)THREAD; | |
1155 { | |
1156 // Atomic creation of array_klasses | |
1157 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1158 MutexLocker ma(MultiArray_lock, THREAD); | |
1159 | |
1160 // Check if update has already taken place | |
1161 if (this_oop->array_klasses() == NULL) { | |
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1162 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1163 this_oop->set_array_klasses(k); |
1164 } | |
1165 } | |
1166 } | |
1167 // _this will always be set at this point | |
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1168 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1169 if (or_null) { |
1170 return oak->array_klass_or_null(n); | |
1171 } | |
1172 return oak->array_klass(n, CHECK_NULL); | |
1173 } | |
1174 | |
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1175 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1176 return array_klass_impl(or_null, 1, THREAD); |
1177 } | |
1178 | |
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1179 void InstanceKlass::call_class_initializer(TRAPS) { |
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1180 instanceKlassHandle ik (THREAD, this); |
0 | 1181 call_class_initializer_impl(ik, THREAD); |
1182 } | |
1183 | |
1184 static int call_class_initializer_impl_counter = 0; // for debugging | |
1185 | |
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1186 Method* InstanceKlass::class_initializer() { |
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1187 Method* clinit = find_method( |
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1188 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1189 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1190 return clinit; |
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1191 } |
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1192 return NULL; |
0 | 1193 } |
1194 | |
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1195 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1196 if (ReplayCompiles && |
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1197 (ReplaySuppressInitializers == 1 || |
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1198 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1199 // Hide the existence of the initializer for the purpose of replaying the compile |
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1200 return; |
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1201 } |
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1202 |
0 | 1203 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1204 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1205 if (TraceClassInitialization) { | |
1206 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1207 this_oop->name()->print_value(); | |
1208 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1209 } | |
1210 if (h_method() != NULL) { | |
1211 JavaCallArguments args; // No arguments | |
1212 JavaValue result(T_VOID); | |
1213 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1214 } | |
1215 } | |
1216 | |
1217 | |
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1218 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1219 InterpreterOopMap* entry_for) { |
1220 // Dirty read, then double-check under a lock. | |
1221 if (_oop_map_cache == NULL) { | |
1222 // Otherwise, allocate a new one. | |
1223 MutexLocker x(OopMapCacheAlloc_lock); | |
1224 // First time use. Allocate a cache in C heap | |
1225 if (_oop_map_cache == NULL) { | |
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1226 // Release stores from OopMapCache constructor before assignment |
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1227 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1228 // required memory barrier only because of the volatile |
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1229 // qualifier of _oop_map_cache. |
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1230 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1231 } |
1232 } | |
1233 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1234 _oop_map_cache->lookup(method, bci, entry_for); | |
1235 } | |
1236 | |
1237 | |
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1238 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1239 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1240 Symbol* f_name = fs.name(); |
1241 Symbol* f_sig = fs.signature(); | |
0 | 1242 if (f_name == name && f_sig == sig) { |
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1243 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1244 return true; |
1245 } | |
1246 } | |
1247 return false; | |
1248 } | |
1249 | |
1250 | |
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1251 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1252 const int n = local_interfaces()->length(); |
1253 for (int i = 0; i < n; i++) { | |
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1254 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1255 assert(intf1->is_interface(), "just checking type"); |
0 | 1256 // search for field in current interface |
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1257 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1258 assert(fd->is_static(), "interface field must be static"); |
1259 return intf1; | |
1260 } | |
1261 // search for field in direct superinterfaces | |
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1262 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1263 if (intf2 != NULL) return intf2; |
1264 } | |
1265 // otherwise field lookup fails | |
1266 return NULL; | |
1267 } | |
1268 | |
1269 | |
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1270 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1271 // search order according to newest JVM spec (5.4.3.2, p.167). |
1272 // 1) search for field in current klass | |
1273 if (find_local_field(name, sig, fd)) { | |
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1274 return const_cast<InstanceKlass*>(this); |
0 | 1275 } |
1276 // 2) search for field recursively in direct superinterfaces | |
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1277 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1278 if (intf != NULL) return intf; |
1279 } | |
1280 // 3) apply field lookup recursively if superclass exists | |
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1281 { Klass* supr = super(); |
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1282 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1283 } |
1284 // 4) otherwise field lookup fails | |
1285 return NULL; | |
1286 } | |
1287 | |
1288 | |
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1289 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1290 // search order according to newest JVM spec (5.4.3.2, p.167). |
1291 // 1) search for field in current klass | |
1292 if (find_local_field(name, sig, fd)) { | |
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1293 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1294 } |
1295 // 2) search for field recursively in direct superinterfaces | |
1296 if (is_static) { | |
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1297 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1298 if (intf != NULL) return intf; |
1299 } | |
1300 // 3) apply field lookup recursively if superclass exists | |
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1301 { Klass* supr = super(); |
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1302 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1303 } |
1304 // 4) otherwise field lookup fails | |
1305 return NULL; | |
1306 } | |
1307 | |
1308 | |
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1309 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1310 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1311 if (fs.offset() == offset) { |
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1312 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1313 if (fd->is_static() == is_static) return true; |
1314 } | |
1315 } | |
1316 return false; | |
1317 } | |
1318 | |
1319 | |
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1320 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1321 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1322 while (klass != NULL) { |
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1323 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1324 return true; |
1325 } | |
6983 | 1326 klass = klass->super(); |
0 | 1327 } |
1328 return false; | |
1329 } | |
1330 | |
1331 | |
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1332 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1333 int len = methods()->length(); |
1334 for (int index = 0; index < len; index++) { | |
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1335 Method* m = methods()->at(index); |
0 | 1336 assert(m->is_method(), "must be method"); |
1337 f(m); | |
1338 } | |
1339 } | |
1340 | |
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1341 |
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1342 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1343 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1344 if (fs.access_flags().is_static()) { | |
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1345 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1346 cl->do_field(&fd); |
1347 } | |
0 | 1348 } |
1349 } | |
1350 | |
1351 | |
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1352 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1353 instanceKlassHandle h_this(THREAD, this); |
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1354 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1355 } |
1356 | |
1357 | |
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1358 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1359 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1360 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1361 if (fs.access_flags().is_static()) { |
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1362 fieldDescriptor& fd = fs.field_descriptor(); |
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1363 f(&fd, mirror, CHECK); |
3938 | 1364 } |
0 | 1365 } |
1366 } | |
1367 | |
1368 | |
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1369 static int compare_fields_by_offset(int* a, int* b) { |
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1370 return a[0] - b[0]; |
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1371 } |
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1372 |
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1373 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1374 InstanceKlass* super = superklass(); |
0 | 1375 if (super != NULL) { |
1376 super->do_nonstatic_fields(cl); | |
1377 } | |
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|
1378 fieldDescriptor fd; |
3938 | 1379 int length = java_fields_count(); |
44
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1380 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1381 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1382 int j = 0; |
3938 | 1383 for (int i = 0; i < length; i += 1) { |
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1384 fd.reinitialize(this, i); |
44
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1385 if (!fd.is_static()) { |
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1386 fields_sorted[j + 0] = fd.offset(); |
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1387 fields_sorted[j + 1] = i; |
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1388 j += 2; |
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1389 } |
0 | 1390 } |
44
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1391 if (j > 0) { |
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1392 length = j; |
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1393 // _sort_Fn is defined in growableArray.hpp. |
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1394 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1395 for (int i = 0; i < length; i += 2) { |
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1396 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1397 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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|
1398 cl->do_field(&fd); |
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|
1399 } |
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|
1400 } |
6197 | 1401 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1402 } |
1403 | |
1404 | |
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1405 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1406 if (array_klasses() != NULL) |
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1407 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1408 } |
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1409 |
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1410 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1411 if (array_klasses() != NULL) |
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1412 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1413 } |
1414 | |
1415 #ifdef ASSERT | |
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1416 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1417 int len = methods->length(); |
1418 for (int index = 0; index < len; index++) { | |
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1419 Method* m = methods->at(index); |
0 | 1420 assert(m->is_method(), "must be method"); |
1421 if (m->signature() == signature && m->name() == name) { | |
1422 return index; | |
1423 } | |
1424 } | |
1425 return -1; | |
1426 } | |
1427 #endif | |
1428 | |
6934 | 1429 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1430 int len = methods->length(); |
1431 // methods are sorted, so do binary search | |
1432 int l = 0; | |
1433 int h = len - 1; | |
1434 while (l <= h) { | |
1435 int mid = (l + h) >> 1; | |
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1436 Method* m = methods->at(mid); |
0 | 1437 assert(m->is_method(), "must be method"); |
1438 int res = m->name()->fast_compare(name); | |
1439 if (res == 0) { | |
6934 | 1440 return mid; |
0 | 1441 } else if (res < 0) { |
1442 l = mid + 1; | |
1443 } else { | |
1444 h = mid - 1; | |
1445 } | |
1446 } | |
6934 | 1447 return -1; |
1448 } | |
1449 | |
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1450 // find_method looks up the name/signature in the local methods array |
6934 | 1451 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1452 return find_method_impl(name, signature, false); |
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1453 } |
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1454 |
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1455 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
20785 | 1456 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass, false); |
6934 | 1457 } |
1458 | |
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1459 // find_instance_method looks up the name/signature in the local methods array |
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1460 // and skips over static methods |
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|
1461 Method* InstanceKlass::find_instance_method( |
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1462 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
20785 | 1463 Method* meth = InstanceKlass::find_method_impl(methods, name, signature, false, true); |
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1464 return meth; |
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|
1465 } |
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|
1466 |
20785 | 1467 // find_instance_method looks up the name/signature in the local methods array |
1468 // and skips over static methods | |
1469 Method* InstanceKlass::find_instance_method(Symbol* name, Symbol* signature) { | |
1470 return InstanceKlass::find_instance_method(methods(), name, signature); | |
1471 } | |
1472 | |
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1473 // find_method looks up the name/signature in the local methods array |
6934 | 1474 Method* InstanceKlass::find_method( |
1475 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
20785 | 1476 return InstanceKlass::find_method_impl(methods, name, signature, false, false); |
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1477 } |
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1478 |
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1479 Method* InstanceKlass::find_method_impl( |
20785 | 1480 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1481 int hit = find_method_index(methods, name, signature, skipping_overpass, skipping_static); | |
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1482 return hit >= 0 ? methods->at(hit): NULL; |
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|
1483 } |
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1484 |
20785 | 1485 bool InstanceKlass::method_matches(Method* m, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1486 return (m->signature() == signature) && | |
1487 (!skipping_overpass || !m->is_overpass()) && | |
1488 (!skipping_static || !m->is_static()); | |
1489 } | |
1490 | |
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1491 // Used directly for default_methods to find the index into the |
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1492 // default_vtable_indices, and indirectly by find_method |
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|
1493 // find_method_index looks in the local methods array to return the index |
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1494 // of the matching name/signature. If, overpass methods are being ignored, |
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1495 // the search continues to find a potential non-overpass match. This capability |
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|
1496 // is important during method resolution to prefer a static method, for example, |
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|
1497 // over an overpass method. |
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1498 int InstanceKlass::find_method_index( |
20785 | 1499 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
6934 | 1500 int hit = binary_search(methods, name); |
1501 if (hit != -1) { | |
1502 Method* m = methods->at(hit); | |
20785 | 1503 |
6934 | 1504 // Do linear search to find matching signature. First, quick check |
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|
1505 // for common case, ignoring overpasses if requested. |
20785 | 1506 if (method_matches(m, signature, skipping_overpass, skipping_static)) return hit; |
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1507 |
6934 | 1508 // search downwards through overloaded methods |
1509 int i; | |
1510 for (i = hit - 1; i >= 0; --i) { | |
1511 Method* m = methods->at(i); | |
1512 assert(m->is_method(), "must be method"); | |
1513 if (m->name() != name) break; | |
20785 | 1514 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1515 } |
1516 // search upwards | |
1517 for (i = hit + 1; i < methods->length(); ++i) { | |
1518 Method* m = methods->at(i); | |
1519 assert(m->is_method(), "must be method"); | |
1520 if (m->name() != name) break; | |
20785 | 1521 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1522 } |
1523 // not found | |
0 | 1524 #ifdef ASSERT |
20785 | 1525 int index = skipping_overpass || skipping_static ? -1 : linear_search(methods, name, signature); |
6934 | 1526 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1527 #endif |
6934 | 1528 } |
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1529 return -1; |
0 | 1530 } |
6934 | 1531 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1532 return find_method_by_name(methods(), name, end); | |
1533 } | |
1534 | |
1535 int InstanceKlass::find_method_by_name( | |
1536 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1537 assert(end_ptr != NULL, "just checking"); | |
1538 int start = binary_search(methods, name); | |
1539 int end = start + 1; | |
1540 if (start != -1) { | |
1541 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1542 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1543 *end_ptr = end; | |
1544 return start; | |
1545 } | |
1546 return -1; | |
1547 } | |
1548 | |
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|
1549 // uncached_lookup_method searches both the local class methods array and all |
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|
1550 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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|
1551 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1552 MethodLookupMode lookup_mode = mode; |
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1553 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1554 while (klass != NULL) { |
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|
1555 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1556 if (method != NULL) { |
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|
1557 return method; |
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|
1558 } |
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1559 klass = InstanceKlass::cast(klass)->super(); |
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|
1560 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1561 } |
1562 return NULL; | |
1563 } | |
1564 | |
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1565 // lookup a method in the default methods list then in all transitive interfaces |
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1566 // Do NOT return private or static methods |
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1567 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1568 Symbol* signature) const { |
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|
1569 Method* m = NULL; |
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1570 if (default_methods() != NULL) { |
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1571 m = find_method(default_methods(), name, signature); |
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1572 } |
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|
1573 // Look up interfaces |
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1574 if (m == NULL) { |
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|
1575 m = lookup_method_in_all_interfaces(name, signature, normal); |
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|
1576 } |
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|
1577 return m; |
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|
1578 } |
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|
1579 |
0 | 1580 // lookup a method in all the interfaces that this class implements |
12318
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|
1581 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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|
1582 // They should only be found in the initial InterfaceMethodRef |
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1583 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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|
1584 Symbol* signature, |
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|
1585 MethodLookupMode mode) const { |
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|
1586 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1587 int num_ifs = all_ifs->length(); |
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1588 InstanceKlass *ik = NULL; |
0 | 1589 for (int i = 0; i < num_ifs; i++) { |
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1590 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1591 Method* m = ik->lookup_method(name, signature); |
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1592 if (m != NULL && m->is_public() && !m->is_static() && |
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1593 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1594 return m; |
1595 } | |
1596 } | |
1597 return NULL; | |
1598 } | |
1599 | |
1600 /* jni_id_for_impl for jfieldIds only */ | |
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1601 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1602 MutexLocker ml(JfieldIdCreation_lock); |
1603 // Retry lookup after we got the lock | |
1604 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1605 if (probe == NULL) { | |
1606 // Slow case, allocate new static field identifier | |
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1607 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1608 this_oop->set_jni_ids(probe); |
1609 } | |
1610 return probe; | |
1611 } | |
1612 | |
1613 | |
1614 /* jni_id_for for jfieldIds only */ | |
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1615 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1616 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1617 if (probe == NULL) { | |
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1618 probe = jni_id_for_impl(this, offset); |
0 | 1619 } |
1620 return probe; | |
1621 } | |
1622 | |
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1623 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1624 Array<jushort>* inner_class_list = inner_classes(); |
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1625 if (inner_class_list == NULL) { |
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1626 return 0; |
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1627 } |
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1628 int length = inner_class_list->length(); |
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1629 if (length % inner_class_next_offset == 0) { |
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1630 return 0; |
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1631 } else { |
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1632 int index = length - enclosing_method_attribute_size; |
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1633 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1634 return inner_class_list->at(index + offset); |
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1635 } |
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1636 } |
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1637 |
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1638 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1639 u2 method_index) { |
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1640 Array<jushort>* inner_class_list = inner_classes(); |
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1641 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1642 int length = inner_class_list->length(); |
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1643 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1644 int index = length - enclosing_method_attribute_size; |
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1645 inner_class_list->at_put( |
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1646 index + enclosing_method_class_index_offset, class_index); |
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1647 inner_class_list->at_put( |
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1648 index + enclosing_method_method_index_offset, method_index); |
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1649 } |
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1650 } |
0 | 1651 |
1652 // Lookup or create a jmethodID. | |
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1653 // This code is called by the VMThread and JavaThreads so the |
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1654 // locking has to be done very carefully to avoid deadlocks |
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1655 // and/or other cache consistency problems. |
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1656 // |
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1657 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1658 size_t idnum = (size_t)method_h->method_idnum(); |
1659 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1660 size_t length = 0; | |
1661 jmethodID id = NULL; | |
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1662 |
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1663 // We use a double-check locking idiom here because this cache is |
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1664 // performance sensitive. In the normal system, this cache only |
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1665 // transitions from NULL to non-NULL which is safe because we use |
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1666 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1667 // A partially constructed cache should never be seen by a racing |
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1668 // thread. We also use release_store_ptr() to save a new jmethodID |
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1669 // in the cache so a partially constructed jmethodID should never be |
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1670 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1671 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1672 // creation of the cache itself requires no leaks so a lock is |
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1673 // generally acquired in those two cases. |
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1674 // |
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1675 // If the RedefineClasses() API has been used, then this cache can |
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1676 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1677 // Cache creation requires no leaks and we require safety between all |
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1678 // cache accesses and freeing of the old cache so a lock is generally |
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1679 // acquired when the RedefineClasses() API has been used. |
0 | 1680 |
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1681 if (jmeths != NULL) { |
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1682 // the cache already exists |
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1683 if (!ik_h->idnum_can_increment()) { |
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1684 // the cache can't grow so we can just get the current values |
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1685 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1686 } else { |
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1687 // cache can grow so we have to be more careful |
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1688 if (Threads::number_of_threads() == 0 || |
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1689 SafepointSynchronize::is_at_safepoint()) { |
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1690 // we're single threaded or at a safepoint - no locking needed |
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1691 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1692 } else { |
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1693 MutexLocker ml(JmethodIdCreation_lock); |
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1694 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1695 } |
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1696 } |
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1697 } |
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1698 // implied else: |
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1699 // we need to allocate a cache so default length and id values are good |
0 | 1700 |
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1701 if (jmeths == NULL || // no cache yet |
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1702 length <= idnum || // cache is too short |
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1703 id == NULL) { // cache doesn't contain entry |
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1704 |
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1705 // This function can be called by the VMThread so we have to do all |
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1706 // things that might block on a safepoint before grabbing the lock. |
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1707 // Otherwise, we can deadlock with the VMThread or have a cache |
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1708 // consistency issue. These vars keep track of what we might have |
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1709 // to free after the lock is dropped. |
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1710 jmethodID to_dealloc_id = NULL; |
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1711 jmethodID* to_dealloc_jmeths = NULL; |
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1712 |
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1713 // may not allocate new_jmeths or use it if we allocate it |
0 | 1714 jmethodID* new_jmeths = NULL; |
1715 if (length <= idnum) { | |
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1716 // allocate a new cache that might be used |
0 | 1717 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1718 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1719 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1720 // cache size is stored in element[0], other elements offset by one |
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1721 new_jmeths[0] = (jmethodID)size; |
0 | 1722 } |
1723 | |
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1724 // allocate a new jmethodID that might be used |
0 | 1725 jmethodID new_id = NULL; |
1726 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1727 // The method passed in is old (but not obsolete), we need to use the current version | |
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1728 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1729 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1730 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1731 } else { |
1732 // It is the current version of the method or an obsolete method, | |
1733 // use the version passed in | |
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1734 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1735 } |
1736 | |
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1737 if (Threads::number_of_threads() == 0 || |
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1738 SafepointSynchronize::is_at_safepoint()) { |
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1739 // we're single threaded or at a safepoint - no locking needed |
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1740 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1741 &to_dealloc_id, &to_dealloc_jmeths); |
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1742 } else { |
0 | 1743 MutexLocker ml(JmethodIdCreation_lock); |
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1744 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1745 &to_dealloc_id, &to_dealloc_jmeths); |
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1746 } |
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1747 |
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1748 // The lock has been dropped so we can free resources. |
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1749 // Free up either the old cache or the new cache if we allocated one. |
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1750 if (to_dealloc_jmeths != NULL) { |
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1751 FreeHeap(to_dealloc_jmeths); |
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1752 } |
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1753 // free up the new ID since it wasn't needed |
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1754 if (to_dealloc_id != NULL) { |
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1755 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1756 } |
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1757 } |
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1758 return id; |
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1759 } |
0 | 1760 |
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1761 |
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1762 // Common code to fetch the jmethodID from the cache or update the |
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1763 // cache with the new jmethodID. This function should never do anything |
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1764 // that causes the caller to go to a safepoint or we can deadlock with |
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1765 // the VMThread or have cache consistency issues. |
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1766 // |
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1767 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1768 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1769 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1770 jmethodID** to_dealloc_jmeths_p) { |
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1771 assert(new_id != NULL, "sanity check"); |
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1772 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1773 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1774 assert(Threads::number_of_threads() == 0 || |
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1775 SafepointSynchronize::is_at_safepoint() || |
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1776 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1777 |
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1778 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1779 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
977
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1780 jmethodID id = NULL; |
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1781 size_t length = 0; |
0 | 1782 |
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1783 if (jmeths == NULL || // no cache yet |
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1784 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1785 if (jmeths != NULL) { |
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1786 // copy any existing entries from the old cache |
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1787 for (size_t index = 0; index < length; index++) { |
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1788 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1789 } |
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1790 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1791 } |
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1792 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1793 } else { |
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1794 // fetch jmethodID (if any) from the existing cache |
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1795 id = jmeths[idnum+1]; |
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1796 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1797 } |
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1798 if (id == NULL) { |
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1799 // No matching jmethodID in the existing cache or we have a new |
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1800 // cache or we just grew the cache. This cache write is done here |
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1801 // by the first thread to win the foot race because a jmethodID |
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1802 // needs to be unique once it is generally available. |
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1803 id = new_id; |
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1804 |
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1805 // The jmethodID cache can be read while unlocked so we have to |
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1806 // make sure the new jmethodID is complete before installing it |
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1807 // in the cache. |
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1808 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1809 } else { |
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1810 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1811 } |
1812 return id; | |
1813 } | |
1814 | |
1815 | |
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1816 // Common code to get the jmethodID cache length and the jmethodID |
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1817 // value at index idnum if there is one. |
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1818 // |
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1819 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1820 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1821 assert(cache != NULL, "sanity check"); |
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1822 assert(length_p != NULL, "sanity check"); |
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1823 assert(id_p != NULL, "sanity check"); |
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1824 |
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1825 // cache size is stored in element[0], other elements offset by one |
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1826 *length_p = (size_t)cache[0]; |
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1827 if (*length_p <= idnum) { // cache is too short |
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1828 *id_p = NULL; |
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1829 } else { |
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1830 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1831 } |
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1832 } |
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1833 |
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1834 |
0 | 1835 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1836 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1837 size_t idnum = (size_t)method->method_idnum(); |
1838 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1839 size_t length; // length assigned as debugging crumb | |
1840 jmethodID id = NULL; | |
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1841 if (jmeths != NULL && // If there is a cache |
0 | 1842 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1843 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1844 } | |
1845 return id; | |
1846 } | |
1847 | |
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1848 int nmethodBucket::decrement() { |
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1849 return Atomic::add(-1, (volatile int *)&_count); |
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1850 } |
0 | 1851 |
1852 // | |
1853 // Walk the list of dependent nmethods searching for nmethods which | |
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1854 // are dependent on the changes that were passed in and mark them for |
0 | 1855 // deoptimization. Returns the number of nmethods found. |
1856 // | |
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1857 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1858 assert_locked_or_safepoint(CodeCache_lock); |
1859 int found = 0; | |
1860 nmethodBucket* b = _dependencies; | |
1861 while (b != NULL) { | |
1862 nmethod* nm = b->get_nmethod(); | |
1863 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1864 // the dependency list may contain nmethods which aren't alive. | |
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1865 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1866 if (TraceDependencies) { |
1867 ResourceMark rm; | |
1868 tty->print_cr("Marked for deoptimization"); | |
1869 tty->print_cr(" context = %s", this->external_name()); | |
1870 changes.print(); | |
1871 nm->print(); | |
1872 nm->print_dependencies(); | |
1873 } | |
1874 nm->mark_for_deoptimization(); | |
1875 found++; | |
1876 } | |
1877 b = b->next(); | |
1878 } | |
1879 return found; | |
1880 } | |
1881 | |
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1882 void InstanceKlass::clean_dependent_nmethods() { |
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1883 assert_locked_or_safepoint(CodeCache_lock); |
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1884 |
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1885 if (has_unloaded_dependent()) { |
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1886 nmethodBucket* b = _dependencies; |
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1887 nmethodBucket* last = NULL; |
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1888 while (b != NULL) { |
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1889 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1890 |
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1891 nmethodBucket* next = b->next(); |
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1892 |
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1893 if (b->count() == 0) { |
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1894 if (last == NULL) { |
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1895 _dependencies = next; |
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1896 } else { |
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1897 last->set_next(next); |
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1898 } |
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1899 delete b; |
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1900 // last stays the same. |
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1901 } else { |
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1902 last = b; |
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1903 } |
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1904 |
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1905 b = next; |
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1906 } |
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1907 set_has_unloaded_dependent(false); |
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1908 } |
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1909 #ifdef ASSERT |
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1910 else { |
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1911 // Verification |
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1912 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1913 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1914 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1915 } |
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1916 } |
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1917 #endif |
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1918 } |
0 | 1919 |
1920 // | |
1921 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1922 // It's possible that an nmethod has multiple dependencies on this klass | |
1923 // so a count is kept for each bucket to guarantee that creation and | |
1924 // deletion of dependencies is consistent. | |
1925 // | |
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1926 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1927 assert_locked_or_safepoint(CodeCache_lock); |
1928 nmethodBucket* b = _dependencies; | |
1929 nmethodBucket* last = NULL; | |
1930 while (b != NULL) { | |
1931 if (nm == b->get_nmethod()) { | |
1932 b->increment(); | |
1933 return; | |
1934 } | |
1935 b = b->next(); | |
1936 } | |
1937 _dependencies = new nmethodBucket(nm, _dependencies); | |
1938 } | |
1939 | |
1940 | |
1941 // | |
1942 // Decrement count of the nmethod in the dependency list and remove | |
1943 // the bucket competely when the count goes to 0. This method must | |
1944 // find a corresponding bucket otherwise there's a bug in the | |
1945 // recording of dependecies. | |
1946 // | |
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1947 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1948 assert_locked_or_safepoint(CodeCache_lock); |
1949 nmethodBucket* b = _dependencies; | |
1950 nmethodBucket* last = NULL; | |
1951 while (b != NULL) { | |
1952 if (nm == b->get_nmethod()) { | |
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1953 int val = b->decrement(); |
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1954 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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1955 if (val == 0) { |
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1956 set_has_unloaded_dependent(true); |
0 | 1957 } |
1958 return; | |
1959 } | |
1960 last = b; | |
1961 b = b->next(); | |
1962 } | |
1963 #ifdef ASSERT | |
1964 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1965 nm->print(); | |
1966 #endif // ASSERT | |
1967 ShouldNotReachHere(); | |
1968 } | |
1969 | |
1970 | |
1971 #ifndef PRODUCT | |
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1972 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1973 nmethodBucket* b = _dependencies; |
1974 int idx = 0; | |
1975 while (b != NULL) { | |
1976 nmethod* nm = b->get_nmethod(); | |
1977 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1978 if (!verbose) { | |
1979 nm->print_on(tty, "nmethod"); | |
1980 tty->print_cr(" } "); | |
1981 } else { | |
1982 nm->print(); | |
1983 nm->print_dependencies(); | |
1984 tty->print_cr("--- } "); | |
1985 } | |
1986 b = b->next(); | |
1987 } | |
1988 } | |
1989 | |
1990 | |
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1991 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1992 nmethodBucket* b = _dependencies; |
1993 while (b != NULL) { | |
1994 if (nm == b->get_nmethod()) { | |
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1995 #ifdef ASSERT |
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1996 int count = b->count(); |
20279 | 1997 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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1998 #endif |
0 | 1999 return true; |
2000 } | |
2001 b = b->next(); | |
2002 } | |
2003 return false; | |
2004 } | |
2005 #endif //PRODUCT | |
2006 | |
2007 | |
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2008 // Garbage collection |
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2009 |
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2010 #ifdef ASSERT |
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2011 template <class T> void assert_is_in(T *p) { |
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2012 T heap_oop = oopDesc::load_heap_oop(p); |
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2013 if (!oopDesc::is_null(heap_oop)) { |
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2014 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2015 assert(Universe::heap()->is_in(o), "should be in heap"); |
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2016 } |
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2017 } |
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2018 template <class T> void assert_is_in_closed_subset(T *p) { |
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2019 T heap_oop = oopDesc::load_heap_oop(p); |
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2020 if (!oopDesc::is_null(heap_oop)) { |
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2021 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2022 assert(Universe::heap()->is_in_closed_subset(o), |
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2023 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
113
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2024 } |
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2025 } |
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2026 template <class T> void assert_is_in_reserved(T *p) { |
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2027 T heap_oop = oopDesc::load_heap_oop(p); |
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2028 if (!oopDesc::is_null(heap_oop)) { |
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2029 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2030 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2031 } |
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2032 } |
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2033 template <class T> void assert_nothing(T *p) {} |
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2034 |
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2035 #else |
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2036 template <class T> void assert_is_in(T *p) {} |
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2037 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2038 template <class T> void assert_is_in_reserved(T *p) {} |
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2039 template <class T> void assert_nothing(T *p) {} |
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2040 #endif // ASSERT |
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2041 |
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2042 // |
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2043 // Macros that iterate over areas of oops which are specialized on type of |
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2044 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2045 // |
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2046 // Parameters are: |
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2047 // T - type of oop to point to (either oop or narrowOop) |
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2048 // start_p - starting pointer for region to iterate over |
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2049 // count - number of oops or narrowOops to iterate over |
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2050 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2051 // makes it more efficient to put in a macro rather than making |
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2052 // it a template function) |
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2053 // assert_fn - assert function which is template function because performance |
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2054 // doesn't matter when enabled. |
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2055 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2056 T, start_p, count, do_oop, \ |
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2057 assert_fn) \ |
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2058 { \ |
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2059 T* p = (T*)(start_p); \ |
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2060 T* const end = p + (count); \ |
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2061 while (p < end) { \ |
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2062 (assert_fn)(p); \ |
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2063 do_oop; \ |
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2064 ++p; \ |
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2065 } \ |
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2066 } |
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2067 |
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2068 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2069 T, start_p, count, do_oop, \ |
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2070 assert_fn) \ |
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2071 { \ |
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2072 T* const start = (T*)(start_p); \ |
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2073 T* p = start + (count); \ |
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2074 while (start < p) { \ |
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2075 --p; \ |
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2076 (assert_fn)(p); \ |
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2077 do_oop; \ |
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2078 } \ |
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2079 } |
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2080 |
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2081 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2082 T, start_p, count, low, high, \ |
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2083 do_oop, assert_fn) \ |
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2084 { \ |
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2085 T* const l = (T*)(low); \ |
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2086 T* const h = (T*)(high); \ |
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2087 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2088 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2089 "bounded region must be properly aligned"); \ |
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2090 T* p = (T*)(start_p); \ |
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2091 T* end = p + (count); \ |
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2092 if (p < l) p = l; \ |
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2093 if (end > h) end = h; \ |
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2094 while (p < end) { \ |
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2095 (assert_fn)(p); \ |
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2096 do_oop; \ |
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2097 ++p; \ |
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2098 } \ |
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2099 } |
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2100 |
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2101 |
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2102 // The following macros call specialized macros, passing either oop or |
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2103 // narrowOop as the specialization type. These test the UseCompressedOops |
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2104 // flag. |
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2105 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2106 { \ |
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2107 /* Compute oopmap block range. The common case \ |
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2108 is nonstatic_oop_map_size == 1. */ \ |
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2109 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2110 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2111 if (UseCompressedOops) { \ |
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2112 while (map < end_map) { \ |
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2113 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2114 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2115 do_oop, assert_fn) \ |
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2116 ++map; \ |
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2117 } \ |
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2118 } else { \ |
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2119 while (map < end_map) { \ |
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2120 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2121 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2122 do_oop, assert_fn) \ |
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2123 ++map; \ |
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2124 } \ |
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2125 } \ |
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2126 } |
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2127 |
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2128 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2129 { \ |
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2130 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2131 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2132 if (UseCompressedOops) { \ |
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2133 while (start_map < map) { \ |
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2134 --map; \ |
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2135 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2136 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2137 do_oop, assert_fn) \ |
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2138 } \ |
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2139 } else { \ |
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2140 while (start_map < map) { \ |
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2141 --map; \ |
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2142 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2143 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2144 do_oop, assert_fn) \ |
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2145 } \ |
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2146 } \ |
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2147 } |
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2148 |
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2149 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2150 assert_fn) \ |
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2151 { \ |
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2152 /* Compute oopmap block range. The common case is \ |
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2153 nonstatic_oop_map_size == 1, so we accept the \ |
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2154 usually non-existent extra overhead of examining \ |
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2155 all the maps. */ \ |
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2156 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2157 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2158 if (UseCompressedOops) { \ |
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2159 while (map < end_map) { \ |
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2160 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2161 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2162 low, high, \ |
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2163 do_oop, assert_fn) \ |
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2164 ++map; \ |
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2165 } \ |
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2166 } else { \ |
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2167 while (map < end_map) { \ |
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2168 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2169 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2170 low, high, \ |
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2171 do_oop, assert_fn) \ |
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2172 ++map; \ |
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2173 } \ |
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2174 } \ |
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2175 } |
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2176 |
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2177 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2178 assert(obj != NULL, "can't follow the content of NULL object"); |
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2179 MarkSweep::follow_klass(obj->klass()); |
113
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2180 InstanceKlass_OOP_MAP_ITERATE( \ |
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2181 obj, \ |
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2182 MarkSweep::mark_and_push(p), \ |
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2183 assert_is_in_closed_subset) |
0 | 2184 } |
2185 | |
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2186 #if INCLUDE_ALL_GCS |
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2187 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2188 oop obj) { |
113
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2189 assert(obj != NULL, "can't follow the content of NULL object"); |
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2190 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2191 // Only mark the header and let the scan of the meta-data mark |
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2192 // everything else. |
113
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2193 InstanceKlass_OOP_MAP_ITERATE( \ |
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2194 obj, \ |
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2195 PSParallelCompact::mark_and_push(cm, p), \ |
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2196 assert_is_in) |
0 | 2197 } |
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2198 #endif // INCLUDE_ALL_GCS |
0 | 2199 |
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2200 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2201 // applied to the klass ptr in the object header. |
2202 | |
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2203 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2204 \ |
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2205 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2206 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2207 /* header */ \ |
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2208 if_do_metadata_checked(closure, nv_suffix) { \ |
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2209 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2210 } \ |
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2211 InstanceKlass_OOP_MAP_ITERATE( \ |
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2212 obj, \ |
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2213 SpecializationStats:: \ |
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2214 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2215 (closure)->do_oop##nv_suffix(p), \ |
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2216 assert_is_in_closed_subset) \ |
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2217 return size_helper(); \ |
0 | 2218 } |
2219 | |
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2220 #if INCLUDE_ALL_GCS |
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2221 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2222 \ |
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2223 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2224 OopClosureType* closure) { \ |
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2225 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2226 \ |
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2227 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2228 \ |
342
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2229 /* instance variables */ \ |
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2230 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2231 obj, \ |
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2232 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2233 (closure)->do_oop##nv_suffix(p), \ |
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|
2234 assert_is_in_closed_subset) \ |
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2235 return size_helper(); \ |
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2236 } |
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2237 #endif // INCLUDE_ALL_GCS |
342
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2238 |
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2239 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2240 \ |
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2241 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2242 OopClosureType* closure, \ |
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2243 MemRegion mr) { \ |
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2244 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2245 if_do_metadata_checked(closure, nv_suffix) { \ |
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2246 if (mr.contains(obj)) { \ |
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2247 closure->do_klass##nv_suffix(obj->klass()); \ |
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2248 } \ |
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2249 } \ |
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2250 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2251 obj, mr.start(), mr.end(), \ |
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2252 (closure)->do_oop##nv_suffix(p), \ |
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2253 assert_is_in_closed_subset) \ |
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2254 return size_helper(); \ |
0 | 2255 } |
2256 | |
2257 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2258 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2259 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2260 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2261 #if INCLUDE_ALL_GCS |
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2262 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2263 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2264 #endif // INCLUDE_ALL_GCS |
0 | 2265 |
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2266 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2267 int size = size_helper(); |
113
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2268 InstanceKlass_OOP_MAP_ITERATE( \ |
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2269 obj, \ |
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|
2270 MarkSweep::adjust_pointer(p), \ |
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2271 assert_is_in) |
0 | 2272 return size; |
2273 } | |
2274 | |
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2275 #if INCLUDE_ALL_GCS |
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2276 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2277 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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|
2278 obj, \ |
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|
2279 if (PSScavenge::should_scavenge(p)) { \ |
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2280 pm->claim_or_forward_depth(p); \ |
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|
2281 }, \ |
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|
2282 assert_nothing ) |
0 | 2283 } |
2284 | |
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2285 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2286 int size = size_helper(); |
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2287 InstanceKlass_OOP_MAP_ITERATE( \ |
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|
2288 obj, \ |
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|
2289 PSParallelCompact::adjust_pointer(p), \ |
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2290 assert_is_in) |
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2291 return size; |
0 | 2292 } |
2293 | |
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2294 #endif // INCLUDE_ALL_GCS |
0 | 2295 |
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2296 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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|
2297 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
5998
49036505ab5f
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|
2298 if (is_interface()) { |
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|
2299 if (ClassUnloading) { |
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2300 Klass* impl = implementor(); |
5998
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|
2301 if (impl != NULL) { |
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2302 if (!impl->is_loader_alive(is_alive)) { |
5998
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|
2303 // remove this guy |
8693
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|
2304 Klass** klass = adr_implementor(); |
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|
2305 assert(klass != NULL, "null klass"); |
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|
2306 if (klass != NULL) { |
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|
2307 *klass = NULL; |
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|
2308 } |
5998
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2309 } |
0 | 2310 } |
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2311 } |
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2312 } |
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2313 } |
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2314 |
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2315 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2316 for (int m = 0; m < methods()->length(); m++) { |
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2317 MethodData* mdo = methods()->at(m)->method_data(); |
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2318 if (mdo != NULL) { |
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|
2319 mdo->clean_method_data(is_alive); |
0 | 2320 } |
2321 } | |
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2322 } |
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2323 |
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2324 |
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2325 static void remove_unshareable_in_class(Klass* k) { |
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2326 // remove klass's unshareable info |
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2327 k->remove_unshareable_info(); |
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|
2328 } |
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|
2329 |
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|
2330 void InstanceKlass::remove_unshareable_info() { |
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|
2331 Klass::remove_unshareable_info(); |
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|
2332 // Unlink the class |
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|
2333 if (is_linked()) { |
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|
2334 unlink_class(); |
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2335 } |
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|
2336 init_implementor(); |
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|
2337 |
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|
2338 constants()->remove_unshareable_info(); |
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2339 |
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2340 for (int i = 0; i < methods()->length(); i++) { |
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parents:
6266
diff
changeset
|
2341 Method* m = methods()->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2342 m->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2343 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2344 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2345 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2346 array_klasses_do(remove_unshareable_in_class); |
0 | 2347 } |
2348 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2349 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2350 // Array classes have null protection domain. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
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diff
changeset
|
2351 // --> see ArrayKlass::complete_create_array_klass() |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2352 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2353 } |
2354 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2355 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
|
2356 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
|
2357 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2359 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2360 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2361 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2362 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2363 m->restore_unshareable_info(CHECK); |
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 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2366 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2367 // 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
|
2368 // 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
|
2369 // 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
|
2370 // 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
|
2371 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2372 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2373 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2374 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2375 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2377 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2378 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2379 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
|
2380 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2381 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2382 // 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
|
2383 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2384 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2385 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2386 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2387 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2388 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2389 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2390 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2391 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2392 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2393 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2394 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2395 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2396 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2397 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2398 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2399 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2400 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2401 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2402 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2403 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2404 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2405 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2406 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2407 set_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2408 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2409 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2410 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2411 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2412 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2413 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2414 static void clear_all_breakpoints(Method* m) { |
0 | 2415 m->clear_all_breakpoints(); |
2416 } | |
2417 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2418 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2419 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2420 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2421 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2422 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2423 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2424 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2425 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2426 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2427 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2428 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2429 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
|
2430 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2431 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2432 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2433 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2434 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2435 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2436 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2437 // 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
|
2438 // 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
|
2439 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2440 |
0 | 2441 // Deallocate oop map cache |
2442 if (_oop_map_cache != NULL) { | |
2443 delete _oop_map_cache; | |
2444 _oop_map_cache = NULL; | |
2445 } | |
2446 | |
2447 // Deallocate JNI identifiers for jfieldIDs | |
2448 JNIid::deallocate(jni_ids()); | |
2449 set_jni_ids(NULL); | |
2450 | |
2451 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2452 if (jmeths != (jmethodID*)NULL) { | |
2453 release_set_methods_jmethod_ids(NULL); | |
2454 FreeHeap(jmeths); | |
2455 } | |
2456 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2457 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2458 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2459 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
|
2460 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
|
2461 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2462 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2463 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2464 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2465 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2466 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2467 |
0 | 2468 // release dependencies |
2469 nmethodBucket* b = _dependencies; | |
2470 _dependencies = NULL; | |
2471 while (b != NULL) { | |
2472 nmethodBucket* next = b->next(); | |
2473 delete b; | |
2474 b = next; | |
2475 } | |
2476 | |
2477 // Deallocate breakpoint records | |
2478 if (breakpoints() != 0x0) { | |
2479 methods_do(clear_all_breakpoints); | |
2480 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2481 } | |
2482 | |
2483 // deallocate information about previous versions | |
2484 if (_previous_versions != NULL) { | |
2485 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2486 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2487 delete pv_node; | |
2488 } | |
2489 delete _previous_versions; | |
2490 _previous_versions = NULL; | |
2491 } | |
2492 | |
2493 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2494 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2495 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2496 _cached_class_file = NULL; |
0 | 2497 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2498 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2499 // 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
|
2500 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2501 // 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
|
2502 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2503 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
|
2504 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
|
2505 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2506 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2507 Atomic::dec(&_total_instanceKlass_count); |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2508 } |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2509 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2510 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
|
2511 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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parents:
6197
diff
changeset
|
2512 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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6197
diff
changeset
|
2513 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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6197
diff
changeset
|
2514 // 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
|
2515 // character could cause an overflow because the attribute length is |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
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6197
diff
changeset
|
2516 // 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
|
2517 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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6197
diff
changeset
|
2518 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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6197
diff
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|
2519 char* sde = NEW_C_HEAP_ARRAY(char, (length + 1), mtClass); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
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6197
diff
changeset
|
2520 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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diff
changeset
|
2521 sde[i] = array[i]; |
04ade88d9712
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diff
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|
2522 } |
04ade88d9712
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diff
changeset
|
2523 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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diff
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|
2524 _source_debug_extension = sde; |
04ade88d9712
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diff
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|
2525 } |
0 | 2526 } |
2527 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2528 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
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12287
diff
changeset
|
2529 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
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2357
diff
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|
2530 } |
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7017732: move static fields into Class to prepare for perm gen removal
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|
2531 |
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7017732: move static fields into Class to prepare for perm gen removal
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2357
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|
2532 |
6725
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|
2533 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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12946
diff
changeset
|
2534 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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12946
diff
changeset
|
2535 char hash_buf[40]; |
e64f1fe9756b
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diff
changeset
|
2536 |
e64f1fe9756b
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diff
changeset
|
2537 // If this is an anonymous class, append a hash to make the name unique |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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diff
changeset
|
2538 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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12946
diff
changeset
|
2539 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2540 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
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12946
diff
changeset
|
2541 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2542 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
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12946
diff
changeset
|
2543 } |
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12946
diff
changeset
|
2544 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2545 // Get the internal name as a c string |
0 | 2546 const char* src = (const char*) (name()->as_C_string()); |
2547 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
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12946
diff
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|
2548 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2549 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
|
2550 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2551 // Add L as type indicator |
0 | 2552 int dest_index = 0; |
2553 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2554 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2555 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2556 for (int src_index = 0; src_index < src_length; ) { |
0 | 2557 dest[dest_index++] = src[src_index++]; |
2558 } | |
12995
e64f1fe9756b
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parents:
12946
diff
changeset
|
2559 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2560 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2561 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2562 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2563 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2564 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2565 // Add the semicolon and the NULL |
0 | 2566 dest[dest_index++] = ';'; |
2567 dest[dest_index] = '\0'; | |
2568 return dest; | |
2569 } | |
2570 | |
2571 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2572 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2573 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2574 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2575 Symbol* classname1 = class1->name(); |
2576 | |
2577 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2578 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2579 } |
2580 oop classloader2; | |
6983 | 2581 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2582 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2583 } else { |
6983 | 2584 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2585 classloader2 = NULL; |
2586 } | |
6983 | 2587 Symbol* classname2 = class2->name(); |
0 | 2588 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2589 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2590 classloader2, classname2); |
2591 } | |
2592 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2593 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
|
2594 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2595 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2596 Symbol* classname1 = class1->name(); |
0 | 2597 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2598 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2599 classloader2, classname2); |
2600 } | |
2601 | |
2602 // return true if two classes are in the same package, classloader | |
2603 // 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
|
2604 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
|
2605 oop class_loader2, Symbol* class_name2) { |
0 | 2606 if (class_loader1 != class_loader2) { |
2607 return false; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2608 } else if (class_name1 == class_name2) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2609 return true; // skip painful bytewise comparison |
0 | 2610 } else { |
2611 ResourceMark rm; | |
2612 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2613 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2614 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2615 // Otherwise, we just compare jbyte values between the strings. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2616 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2617 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2618 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2619 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2620 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2621 |
2622 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2623 // One of the two doesn't have a package. Only return true | |
2624 // if the other one also doesn't have a package. | |
2625 return last_slash1 == last_slash2; | |
2626 } else { | |
2627 // Skip over '['s | |
2628 if (*name1 == '[') { | |
2629 do { | |
2630 name1++; | |
2631 } while (*name1 == '['); | |
2632 if (*name1 != 'L') { | |
2633 // Something is terribly wrong. Shouldn't be here. | |
2634 return false; | |
2635 } | |
2636 } | |
2637 if (*name2 == '[') { | |
2638 do { | |
2639 name2++; | |
2640 } while (*name2 == '['); | |
2641 if (*name2 != 'L') { | |
2642 // Something is terribly wrong. Shouldn't be here. | |
2643 return false; | |
2644 } | |
2645 } | |
2646 | |
2647 // Check that package part is identical | |
2648 int length1 = last_slash1 - name1; | |
2649 int length2 = last_slash2 - name2; | |
2650 | |
2651 return UTF8::equal(name1, length1, name2, length2); | |
2652 } | |
2653 } | |
2654 } | |
2655 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2656 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2657 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2658 // Assumes name-signature match |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2659 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2660 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2661 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2662 // Private methods can not be overridden |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2663 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2664 return false; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2665 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2666 // If super method is accessible, then override |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2667 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2668 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2669 return true; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2670 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2671 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2672 assert(super_method->is_package_private(), "must be package private"); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2673 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2674 } |
0 | 2675 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2676 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2677 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2678 Symbol*& simple_name_result, TRAPS) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2679 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2680 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2681 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2682 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2683 // tell if two classes have the same enclosing class (at package level) |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2684 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
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coleenp
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6266
diff
changeset
|
2685 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2686 if (class2_oop == class1()) return true; |
6983 | 2687 if (!class2_oop->oop_is_instance()) return false; |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2688 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
2689 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2690 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2691 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2692 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2693 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2694 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2695 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2696 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2697 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2698 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2699 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2700 // 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:
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diff
changeset
|
2701 bool ignore_inner_is_member; |
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2702 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
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1039
diff
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|
2703 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2704 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2705 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2706 outer1 = instanceKlassHandle(THREAD, next); |
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6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
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|
2707 } |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2708 |
c89f86385056
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jrose
parents:
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diff
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|
2709 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2710 instanceKlassHandle outer2 = class2; |
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diff
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|
2711 for (;;) { |
1126
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|
2712 bool ignore_inner_is_member; |
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2713 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
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diff
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|
2714 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2715 if (next == NULL) break; |
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diff
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|
2716 // Might as well check the new outer against all available values. |
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diff
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|
2717 if (next == class1()) return true; |
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jrose
parents:
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diff
changeset
|
2718 if (next == outer1()) return true; |
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diff
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|
2719 outer2 = instanceKlassHandle(THREAD, next); |
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jrose
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diff
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|
2720 } |
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diff
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|
2721 |
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6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2722 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2723 // 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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|
2724 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2725 } |
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605
diff
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|
2726 |
0 | 2727 |
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|
2728 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2729 jint access = access_flags().as_int(); |
2730 | |
2731 // But check if it happens to be member class. | |
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|
2732 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
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|
2733 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
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|
2734 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
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|
2735 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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|
2736 // 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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|
2737 // 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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|
2738 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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|
2739 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2740 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2741 // 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:
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|
2742 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2743 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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|
2744 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2745 access = iter.inner_access_flags(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2746 break; |
0 | 2747 } |
2748 } | |
2749 // Remember to strip ACC_SUPER bit | |
2750 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2751 } | |
2752 | |
6725
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coleenp
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|
2753 jint InstanceKlass::jvmti_class_status() const { |
0 | 2754 jint result = 0; |
2755 | |
2756 if (is_linked()) { | |
2757 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2758 } | |
2759 | |
2760 if (is_initialized()) { | |
2761 assert(is_linked(), "Class status is not consistent"); | |
2762 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2763 } | |
2764 if (is_in_error_state()) { | |
2765 result |= JVMTI_CLASS_STATUS_ERROR; | |
2766 } | |
2767 return result; | |
2768 } | |
2769 | |
6725
da91efe96a93
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coleenp
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|
2770 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2771 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2772 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2773 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2774 / itableOffsetEntry::size(); | |
2775 | |
2776 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2777 // If the interface isn't implemented by the receiver class, |
0 | 2778 // the VM should throw IncompatibleClassChangeError. |
2779 if (cnt >= nof_interfaces) { | |
6725
da91efe96a93
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coleenp
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6266
diff
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|
2780 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2781 } |
2782 | |
6725
da91efe96a93
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coleenp
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|
2783 Klass* ik = ioe->interface_klass(); |
0 | 2784 if (ik == holder) break; |
2785 } | |
2786 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2787 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2788 Method* m = ime[index].method(); |
0 | 2789 if (m == NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2790 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2791 } |
2792 return m; | |
2793 } | |
2794 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2795 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2796 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2797 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2798 // not yet in the vtable due to concurrent subclass define and superinterface |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2799 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2800 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2801 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2802 int methods_length, bool* trace_name_printed) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2803 // 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
|
2804 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2805 for (int j = 0; j < methods_length; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2806 Method* old_method = old_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2807 Method* new_method = new_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2808 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2809 for (int index = 0; index < default_methods()->length(); index ++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2810 if (default_methods()->at(index) == old_method) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2811 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2812 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2813 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2814 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2815 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2816 external_name(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2817 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2818 *trace_name_printed = true; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2819 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2820 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2821 new_method->name()->as_C_string(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2822 new_method->signature()->as_C_string())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2823 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2824 } |
ac9cb1d5a202
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parents:
12811
diff
changeset
|
2825 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
2826 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
2827 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2828 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2829 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2830 |
0 | 2831 // On-stack replacement stuff |
6725
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|
2832 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2833 // only one compilation can be active |
2834 NEEDS_CLEANUP | |
2835 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2836 OsrList_lock->lock_without_safepoint_check(); | |
2837 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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diff
changeset
|
2838 n->set_osr_link(osr_nmethods_head()); |
0 | 2839 set_osr_nmethods_head(n); |
1783 | 2840 // Raise the highest osr level if necessary |
2841 if (TieredCompilation) { | |
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coleenp
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diff
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|
2842 Method* m = n->method(); |
1783 | 2843 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2844 } | |
0 | 2845 // Remember to unlock again |
2846 OsrList_lock->unlock(); | |
1783 | 2847 |
2848 // Get rid of the osr methods for the same bci that have lower levels. | |
2849 if (TieredCompilation) { | |
2850 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2851 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2852 if (inv != NULL && inv->is_in_use()) { | |
2853 inv->make_not_entrant(); | |
2854 } | |
2855 } | |
2856 } | |
0 | 2857 } |
2858 | |
2859 | |
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coleenp
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|
2860 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2861 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2862 OsrList_lock->lock_without_safepoint_check(); | |
2863 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2864 nmethod* last = NULL; | |
2865 nmethod* cur = osr_nmethods_head(); | |
1783 | 2866 int max_level = CompLevel_none; // Find the max comp level excluding n |
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|
2867 Method* m = n->method(); |
0 | 2868 // Search for match |
2869 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2870 if (TieredCompilation && m == cur->method()) { |
1783 | 2871 // Find max level before n |
2872 max_level = MAX2(max_level, cur->comp_level()); | |
2873 } | |
0 | 2874 last = cur; |
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876
diff
changeset
|
2875 cur = cur->osr_link(); |
0 | 2876 } |
1783 | 2877 nmethod* next = NULL; |
0 | 2878 if (cur == n) { |
1783 | 2879 next = cur->osr_link(); |
0 | 2880 if (last == NULL) { |
2881 // Remove first element | |
1783 | 2882 set_osr_nmethods_head(next); |
0 | 2883 } else { |
1783 | 2884 last->set_osr_link(next); |
0 | 2885 } |
2886 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2887 n->set_osr_link(NULL); |
1783 | 2888 if (TieredCompilation) { |
2889 cur = next; | |
2890 while (cur != NULL) { | |
2891 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2892 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2893 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
|
2894 } |
1783 | 2895 cur = cur->osr_link(); |
2896 } | |
2897 m->set_highest_osr_comp_level(max_level); | |
2898 } | |
0 | 2899 // Remember to unlock again |
2900 OsrList_lock->unlock(); | |
2901 } | |
2902 | |
20611
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2903 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
|
2904 // 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
|
2905 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
|
2906 nmethod* osr = osr_nmethods_head(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2907 int found = 0; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2908 while (osr != NULL) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2909 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
|
2910 if (osr->method() == m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2911 osr->mark_for_deoptimization(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2912 found++; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2913 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2914 osr = osr->osr_link(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2915 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2916 return found; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2917 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2918 |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2919 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2920 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2921 OsrList_lock->lock_without_safepoint_check(); | |
2922 nmethod* osr = osr_nmethods_head(); | |
1783 | 2923 nmethod* best = NULL; |
0 | 2924 while (osr != NULL) { |
2925 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2926 // There can be a time when a c1 osr method exists but we are waiting |
2927 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2928 // the c1 version and only be able to find the c2 version. However | |
2929 // while we overflow in the c1 code at back branches we don't want to | |
2930 // try and switch to the same code as we are already running | |
2931 | |
0 | 2932 if (osr->method() == m && |
2933 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2934 if (match_level) { |
2935 if (osr->comp_level() == comp_level) { | |
2936 // Found a match - return it. | |
2937 OsrList_lock->unlock(); | |
2938 return osr; | |
2939 } | |
2940 } else { | |
2941 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2942 if (osr->comp_level() == CompLevel_highest_tier) { | |
2943 // Found the best possible - return it. | |
2944 OsrList_lock->unlock(); | |
2945 return osr; | |
2946 } | |
2947 best = osr; | |
2948 } | |
2949 } | |
0 | 2950 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2951 osr = osr->osr_link(); |
0 | 2952 } |
2953 OsrList_lock->unlock(); | |
1783 | 2954 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2955 return best; | |
2956 } | |
0 | 2957 return NULL; |
2958 } | |
2959 | |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2960 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
parents:
9062
diff
changeset
|
2961 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
parents:
9062
diff
changeset
|
2962 MutexLocker ml(MemberNameTable_lock); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2963 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2964 |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2965 // Check if method has been redefined while taking out MemberNameTable_lock, if so |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2966 // return false. We cannot cache obsolete methods. They will crash when the function |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2967 // is called! |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2968 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mem_name()); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2969 if (method->is_obsolete()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2970 return false; |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2971 } else if (method->is_old()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2972 // Replace method with redefined version |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2973 java_lang_invoke_MemberName::set_vmtarget(mem_name(), method_with_idnum(method->method_idnum())); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2974 } |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2975 |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2976 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2977 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2978 } |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2979 _member_names->add_member_name(mem_name_wref); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
2980 return true; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2981 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2982 |
0 | 2983 // ----------------------------------------------------------------------------------------------------- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2984 // Printing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2985 |
0 | 2986 #ifndef PRODUCT |
2987 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2988 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2989 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2994 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2995 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2996 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2997 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2998 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2999 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3000 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3001 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3002 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3003 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3004 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3005 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3008 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3009 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3010 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3011 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
3013 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3014 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3015 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3016 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3017 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3018 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3019 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3020 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3021 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3022 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3023 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3025 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3026 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3027 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3028 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3029 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3030 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3031 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3032 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3033 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3034 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3035 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3036 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3038 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3039 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3040 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3041 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3042 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3043 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3044 } |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3045 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3046 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3047 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3048 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3049 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3050 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3051 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3052 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3053 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3054 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3055 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3056 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3057 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3058 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3059 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3060 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3061 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3062 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3063 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3064 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3065 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3066 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3067 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3068 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3069 st->cr(); |
da91efe96a93
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parents:
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diff
changeset
|
3070 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3071 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3072 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3073 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3074 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
3075 } |
8031 | 3076 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3077 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3078 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3079 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
3080 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3081 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3082 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3083 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3084 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3085 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3086 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3087 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3088 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3089 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3090 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3091 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3092 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3093 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3094 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3095 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3096 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3097 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3098 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3099 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3100 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3101 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3102 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3103 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3104 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3105 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3106 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3107 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3108 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3109 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3110 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3111 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3112 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3113 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3114 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3115 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3116 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3117 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3118 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3119 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3120 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3121 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3122 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3123 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3124 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
|
3125 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3126 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3127 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3128 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3129 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3130 |
0 | 3131 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3132 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3133 if (_obj == NULL) { |
0 | 3134 fd->print_on(_st); |
3135 _st->cr(); | |
3136 } else { | |
3137 fd->print_on_for(_st, _obj); | |
3138 _st->cr(); | |
3139 } | |
3140 } | |
3141 | |
3142 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3143 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3144 Klass::oop_print_on(obj, st); |
3145 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3146 if (this == SystemDictionary::String_klass()) { |
0 | 3147 typeArrayOop value = java_lang_String::value(obj); |
3148 juint offset = java_lang_String::offset(obj); | |
3149 juint length = java_lang_String::length(obj); | |
3150 if (value != NULL && | |
3151 value->is_typeArray() && | |
3152 offset <= (juint) value->length() && | |
3153 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3154 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3155 java_lang_String::print(obj, st); |
0 | 3156 st->cr(); |
3157 if (!WizardMode) return; // that is enough | |
3158 } | |
3159 } | |
3160 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3161 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3162 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3163 do_nonstatic_fields(&print_field); |
0 | 3164 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3165 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3166 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3167 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3168 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3169 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3170 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3171 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3172 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3173 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3174 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3175 array_klass->print_value_on_maybe_null(st); |
0 | 3176 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3177 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
|
3178 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3179 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3180 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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6266
diff
changeset
|
3181 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
|
3182 } |
6725
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3183 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
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3184 st->print(BULLET"signature: "); |
2357
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|
3185 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
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3186 st->cr(); |
0 | 3187 } |
3188 } | |
3189 | |
1155
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6912062: disassembler plugin needs to produce symbolic information in product mode
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|
3190 #endif //PRODUCT |
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|
3191 |
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3192 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3193 st->print("a "); |
3194 name()->print_value_on(st); | |
3195 obj->print_address_on(st); | |
6725
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3196 if (this == SystemDictionary::String_klass() |
665
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|
3197 && java_lang_String::value(obj) != NULL) { |
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|
3198 ResourceMark rm; |
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|
3199 int len = java_lang_String::length(obj); |
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3200 int plen = (len < 24 ? len : 12); |
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3201 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
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3202 st->print(" = \"%s\"", str); |
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|
3203 if (len > plen) |
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3204 st->print("...[%d]", len); |
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3205 } else if (this == SystemDictionary::Class_klass()) { |
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3206 Klass* k = java_lang_Class::as_Klass(obj); |
665
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3207 st->print(" = "); |
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|
3208 if (k != NULL) { |
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|
3209 k->print_value_on(st); |
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|
3210 } else { |
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|
3211 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
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3212 st->print("%s", tname ? tname : "type?"); |
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|
3213 } |
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3214 } else if (this == SystemDictionary::MethodType_klass()) { |
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3215 st->print(" = "); |
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3216 java_lang_invoke_MethodType::print_signature(obj, st); |
665
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3217 } else if (java_lang_boxing_object::is_instance(obj)) { |
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|
3218 st->print(" = "); |
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|
3219 java_lang_boxing_object::print(obj, st); |
6725
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3220 } else if (this == SystemDictionary::LambdaForm_klass()) { |
6266
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|
3221 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
1d7922586cf6
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|
3222 if (vmentry != NULL) { |
1d7922586cf6
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|
3223 st->print(" => "); |
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|
3224 vmentry->print_value_on(st); |
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|
3225 } |
6725
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|
3226 } else if (this == SystemDictionary::MemberName_klass()) { |
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3227 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
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|
3228 if (vmtarget != NULL) { |
1d7922586cf6
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|
3229 st->print(" = "); |
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|
3230 vmtarget->print_value_on(st); |
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|
3231 } else { |
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|
3232 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
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|
3233 st->print("."); |
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|
3234 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
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|
3235 } |
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3236 } |
0 | 3237 } |
3238 | |
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3239 const char* InstanceKlass::internal_name() const { |
0 | 3240 return external_name(); |
3241 } | |
3242 | |
7956 | 3243 #if INCLUDE_SERVICES |
3244 // Size Statistics | |
3245 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3246 Klass::collect_statistics(sz); | |
3247 | |
3248 sz->_inst_size = HeapWordSize * size_helper(); | |
3249 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3250 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3251 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3252 ((is_interface() || is_anonymous()) ? | |
3253 align_object_offset(nonstatic_oop_map_size()) : | |
3254 nonstatic_oop_map_size()); | |
3255 | |
3256 int n = 0; | |
3257 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3258 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3259 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3260 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3261 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3262 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3263 sz->_ro_bytes += n; | |
3264 | |
3265 const ConstantPool* cp = constants(); | |
3266 if (cp) { | |
3267 cp->collect_statistics(sz); | |
3268 } | |
3269 | |
3270 const Annotations* anno = annotations(); | |
3271 if (anno) { | |
3272 anno->collect_statistics(sz); | |
3273 } | |
3274 | |
3275 const Array<Method*>* methods_array = methods(); | |
3276 if (methods()) { | |
3277 for (int i = 0; i < methods_array->length(); i++) { | |
3278 Method* method = methods_array->at(i); | |
3279 if (method) { | |
3280 sz->_method_count ++; | |
3281 method->collect_statistics(sz); | |
3282 } | |
3283 } | |
3284 } | |
3285 } | |
3286 #endif // INCLUDE_SERVICES | |
3287 | |
0 | 3288 // Verification |
3289 | |
3290 class VerifyFieldClosure: public OopClosure { | |
113
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3291 protected: |
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|
3292 template <class T> void do_oop_work(T* p) { |
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|
3293 oop obj = oopDesc::load_decode_heap_oop(p); |
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3294 if (!obj->is_oop_or_null()) { |
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|
3295 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3296 Universe::print(); |
3297 guarantee(false, "boom"); | |
3298 } | |
3299 } | |
113
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|
3300 public: |
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|
3301 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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|
3302 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3303 }; |
3304 | |
17674
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8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
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|
3305 void InstanceKlass::verify_on(outputStream* st) { |
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3306 #ifndef PRODUCT |
11034 | 3307 // Avoid redundant verifies, this really should be in product. |
6725
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3308 if (_verify_count == Universe::verify_count()) return; |
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3309 _verify_count = Universe::verify_count(); |
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3310 #endif |
11034 | 3311 |
3312 // Verify Klass | |
17674
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|
3313 Klass::verify_on(st); |
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|
3314 |
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|
3315 // Verify that klass is present in ClassLoaderData |
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|
3316 guarantee(class_loader_data()->contains_klass(this), |
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|
3317 "this class isn't found in class loader data"); |
6725
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3318 |
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|
3319 // Verify vtables |
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|
3320 if (is_linked()) { |
11034 | 3321 ResourceMark rm; |
6725
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|
3322 // $$$ This used to be done only for m/s collections. Doing it |
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|
3323 // always seemed a valid generalization. (DLD -- 6/00) |
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|
3324 vtable()->verify(st); |
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|
3325 } |
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|
3326 |
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|
3327 // Verify first subklass |
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|
3328 if (subklass_oop() != NULL) { |
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|
3329 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3330 } |
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|
3331 |
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|
3332 // Verify siblings |
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|
3333 Klass* super = this->super(); |
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|
3334 Klass* sib = next_sibling(); |
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|
3335 if (sib != NULL) { |
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|
3336 if (sib == this) { |
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|
3337 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3338 } |
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|
3339 |
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|
3340 guarantee(sib->is_klass(), "should be klass"); |
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|
3341 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3342 } |
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|
3343 |
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|
3344 // Verify implementor fields |
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|
3345 Klass* im = implementor(); |
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|
3346 if (im != NULL) { |
da91efe96a93
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|
3347 guarantee(is_interface(), "only interfaces should have implementor set"); |
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|
3348 guarantee(im->is_klass(), "should be klass"); |
6983 | 3349 guarantee(!im->is_interface() || im == this, |
6725
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|
3350 "implementors cannot be interfaces"); |
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|
3351 } |
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|
3352 |
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|
3353 // Verify local interfaces |
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|
3354 if (local_interfaces()) { |
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|
3355 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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|
3356 for (int j = 0; j < local_interfaces->length(); j++) { |
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|
3357 Klass* e = local_interfaces->at(j); |
6983 | 3358 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3359 } |
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|
3360 } |
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|
3361 |
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|
3362 // Verify transitive interfaces |
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|
3363 if (transitive_interfaces() != NULL) { |
da91efe96a93
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|
3364 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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|
3365 for (int j = 0; j < transitive_interfaces->length(); j++) { |
da91efe96a93
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|
3366 Klass* e = transitive_interfaces->at(j); |
6983 | 3367 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3368 } |
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|
3369 } |
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|
3370 |
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|
3371 // Verify methods |
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|
3372 if (methods() != NULL) { |
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|
3373 Array<Method*>* methods = this->methods(); |
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|
3374 for (int j = 0; j < methods->length(); j++) { |
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|
3375 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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|
3376 } |
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|
3377 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3378 Method* m1 = methods->at(j); |
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|
3379 Method* m2 = methods->at(j + 1); |
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|
3380 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3381 } |
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|
3382 } |
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|
3383 |
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|
3384 // Verify method ordering |
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|
3385 if (method_ordering() != NULL) { |
da91efe96a93
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|
3386 Array<int>* method_ordering = this->method_ordering(); |
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|
3387 int length = method_ordering->length(); |
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|
3388 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
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|
3389 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
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|
3390 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3391 jlong sum = 0; |
da91efe96a93
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|
3392 for (int j = 0; j < length; j++) { |
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|
3393 int original_index = method_ordering->at(j); |
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|
3394 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3395 guarantee(original_index < length, "invalid method ordering index"); |
da91efe96a93
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|
3396 sum += original_index; |
da91efe96a93
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|
3397 } |
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|
3398 // Verify sum of indices 0,1,...,length-1 |
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|
3399 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3400 } else { |
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|
3401 guarantee(length == 0, "invalid method ordering length"); |
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|
3402 } |
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|
3403 } |
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|
3404 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3405 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3406 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
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|
3407 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3408 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3409 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3410 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3411 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3412 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3413 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3414 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3415 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3416 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3417 |
6725
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|
3418 // Verify JNI static field identifiers |
da91efe96a93
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|
3419 if (jni_ids() != NULL) { |
da91efe96a93
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|
3420 jni_ids()->verify(this); |
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|
3421 } |
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|
3422 |
da91efe96a93
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|
3423 // Verify other fields |
da91efe96a93
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|
3424 if (array_klasses() != NULL) { |
da91efe96a93
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|
3425 guarantee(array_klasses()->is_klass(), "should be klass"); |
da91efe96a93
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|
3426 } |
da91efe96a93
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|
3427 if (constants() != NULL) { |
da91efe96a93
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|
3428 guarantee(constants()->is_constantPool(), "should be constant pool"); |
da91efe96a93
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|
3429 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3430 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3431 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3432 guarantee(host->is_klass(), "should be klass"); |
6725
da91efe96a93
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diff
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|
3433 } |
da91efe96a93
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diff
changeset
|
3434 } |
da91efe96a93
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diff
changeset
|
3435 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3436 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3437 Klass::oop_verify_on(obj, st); |
3438 VerifyFieldClosure blk; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3439 obj->oop_iterate_no_header(&blk); |
0 | 3440 } |
3441 | |
6725
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|
3442 |
113
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52
diff
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|
3443 // JNIid class for jfieldIDs only |
ba764ed4b6f2
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52
diff
changeset
|
3444 // Note to reviewers: |
ba764ed4b6f2
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coleenp
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52
diff
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|
3445 // These JNI functions are just moved over to column 1 and not changed |
ba764ed4b6f2
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52
diff
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|
3446 // in the compressed oops workspace. |
6725
da91efe96a93
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|
3447 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
ba764ed4b6f2
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coleenp
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diff
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|
3448 _holder = holder; |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3449 _offset = offset; |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3450 _next = next; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3451 debug_only(_is_static_field_id = false;) |
ba764ed4b6f2
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coleenp
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52
diff
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|
3452 } |
0 | 3453 |
3454 | |
113
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3455 JNIid* JNIid::find(int offset) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3456 JNIid* current = this; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3457 while (current != NULL) { |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3458 if (current->offset() == offset) return current; |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3459 current = current->next(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3460 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3461 return NULL; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3462 } |
0 | 3463 |
3464 void JNIid::deallocate(JNIid* current) { | |
113
ba764ed4b6f2
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52
diff
changeset
|
3465 while (current != NULL) { |
ba764ed4b6f2
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52
diff
changeset
|
3466 JNIid* next = current->next(); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3467 delete current; |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3468 current = next; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3469 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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52
diff
changeset
|
3470 } |
0 | 3471 |
3472 | |
6725
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6266
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changeset
|
3473 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3474 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
ba764ed4b6f2
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52
diff
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|
3475 int end_field_offset; |
6725
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diff
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|
3476 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3477 |
113
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52
diff
changeset
|
3478 JNIid* current = this; |
ba764ed4b6f2
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52
diff
changeset
|
3479 while (current != NULL) { |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3480 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3481 #ifdef ASSERT |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3482 int o = current->offset(); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3483 if (current->is_static_field_id()) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3484 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3485 } |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3486 #endif |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3487 current = current->next(); |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3488 } |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3489 } |
0 | 3490 |
3491 | |
3492 #ifdef ASSERT | |
6725
da91efe96a93
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6266
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|
3493 void InstanceKlass::set_init_state(ClassState state) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3494 bool good_state = is_shared() ? (_init_state <= state) |
113
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3495 : (_init_state < state); |
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3496 assert(good_state || state == allocated, "illegal state transition"); |
4739
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3497 _init_state = (u1)state; |
113
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3498 } |
0 | 3499 #endif |
3500 | |
3501 | |
3502 // RedefineClasses() support for previous versions: | |
3503 | |
6725
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3504 // Purge previous versions |
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3505 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3506 if (ik->previous_versions() != NULL) { |
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3507 // This klass has previous versions so see what we can cleanup |
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3508 // while it is safe to do so. |
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3509 |
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3510 int deleted_count = 0; // leave debugging breadcrumbs |
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3511 int live_count = 0; |
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3512 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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3513 ClassLoaderData::the_null_class_loader_data() : |
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3514 ik->class_loader_data(); |
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3515 |
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3516 // RC_TRACE macro has an embedded ResourceMark |
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3517 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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3518 ik->external_name(), ik->previous_versions()->length())); |
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3519 |
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3520 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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3521 // check the previous versions array |
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3522 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3523 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3524 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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3525 |
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3526 ConstantPool* pvcp = cp_ref; |
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3527 if (!pvcp->on_stack()) { |
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3528 // If the constant pool isn't on stack, none of the methods |
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3529 // are executing. Delete all the methods, the constant pool and |
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3530 // and this previous version node. |
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3531 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3532 if (method_refs != NULL) { |
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3533 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3534 Method* method = method_refs->at(j); |
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3535 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3536 method_refs->remove_at(j); |
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3537 // method will be freed with associated class. |
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3538 } |
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3539 } |
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3540 // Remove the constant pool |
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3541 delete pv_node; |
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3542 // Since we are traversing the array backwards, we don't have to |
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3543 // do anything special with the index. |
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3544 ik->previous_versions()->remove_at(i); |
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3545 deleted_count++; |
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3546 continue; |
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3547 } else { |
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3548 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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3549 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3550 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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3551 live_count++; |
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3552 } |
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3553 |
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3554 // At least one method is live in this previous version, clean out |
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3555 // the others or mark them as obsolete. |
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3556 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3557 if (method_refs != NULL) { |
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3558 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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3559 method_refs->length())); |
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3560 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3561 Method* method = method_refs->at(j); |
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3562 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3563 |
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3564 // Remove the emcp method if it's not executing |
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3565 // If it's been made obsolete by a redefinition of a non-emcp |
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3566 // method, mark it as obsolete but leave it to clean up later. |
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3567 if (!method->on_stack()) { |
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3568 method_refs->remove_at(j); |
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3569 } else if (emcp_method_count == 0) { |
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3570 method->set_is_obsolete(); |
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3571 } else { |
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3572 // RC_TRACE macro has an embedded ResourceMark |
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3573 RC_TRACE(0x00000200, |
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3574 ("purge: %s(%s): prev method @%d in version @%d is alive", |
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3575 method->name()->as_C_string(), |
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3576 method->signature()->as_C_string(), j, i)); |
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3577 } |
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|
3578 } |
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|
3579 } |
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|
3580 } |
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3581 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
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3582 RC_TRACE(0x00000200, |
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3583 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
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3584 deleted_count)); |
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|
3585 } |
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|
3586 } |
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3587 |
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3588 // External interface for use during class unloading. |
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3589 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
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3590 // Call with >0 emcp methods since they are not currently being redefined. |
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3591 purge_previous_versions_internal(ik, 1); |
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3592 } |
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|
3593 |
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3594 |
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3595 // Potentially add an information node that contains pointers to the |
0 | 3596 // interesting parts of the previous version of the_class. |
6725
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3597 // This is also where we clean out any unused references. |
977
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|
3598 // Note that while we delete nodes from the _previous_versions |
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|
3599 // array, we never delete the array itself until the klass is |
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3600 // unloaded. The has_been_redefined() query depends on that fact. |
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|
3601 // |
6725
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3602 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
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3603 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3604 assert(Thread::current()->is_VM_thread(), |
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3605 "only VMThread can add previous versions"); |
0 | 3606 |
3607 if (_previous_versions == NULL) { | |
3608 // This is the first previous version so make some space. | |
3609 // Start with 2 elements under the assumption that the class | |
3610 // won't be redefined much. | |
6197 | 3611 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3612 GrowableArray<PreviousVersionNode *>(2, true); |
3613 } | |
3614 | |
6725
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3615 ConstantPool* cp_ref = ikh->constants(); |
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3616 |
0 | 3617 // RC_TRACE macro has an embedded ResourceMark |
6725
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3618 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
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3619 "on_stack=%d", |
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3620 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
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|
3621 cp_ref->on_stack())); |
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|
3622 |
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3623 // If the constant pool for this previous version of the class |
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3624 // is not marked as being on the stack, then none of the methods |
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3625 // in this previous version of the class are on the stack so |
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3626 // we don't need to create a new PreviousVersionNode. However, |
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3627 // we still need to examine older previous versions below. |
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|
3628 Array<Method*>* old_methods = ikh->methods(); |
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3629 |
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diff
changeset
|
3630 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3631 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3632 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3633 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3634 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3635 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3636 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3637 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3638 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
3639 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3640 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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parents:
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diff
changeset
|
3641 for (int i = 0; i < old_methods->length(); i++) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3642 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3643 // this old method is EMCP. Save it only if it's on the stack |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3644 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
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parents:
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diff
changeset
|
3645 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3646 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3647 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3648 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
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diff
changeset
|
3649 // 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
|
3650 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3651 } |
0 | 3652 } |
3653 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3654 // 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
|
3655 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
|
3656 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3657 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3658 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3659 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3660 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3661 // 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
|
3662 // is a good time to clear out unused references. |
0 | 3663 |
3664 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3665 _previous_versions->length())); | |
3666 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3667 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3668 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3669 |
3670 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3671 | |
3672 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
|
3673 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3674 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3675 // clear out any matching EMCP method entries the hard way. |
3676 int local_count = 0; | |
3677 for (int i = 0; i < old_methods->length(); i++) { | |
3678 if (!emcp_methods->at(i)) { | |
3679 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3680 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3681 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3682 Symbol* m_signature = old_method->signature(); |
0 | 3683 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3684 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3685 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
|
3686 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3687 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3688 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3689 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3690 if (method_refs == NULL) { |
3691 // We have run into a PreviousVersion generation where | |
3692 // all methods were made obsolete during that generation's | |
3693 // RedefineClasses() operation. At the time of that | |
3694 // operation, all EMCP methods were flushed so we don't | |
3695 // have to go back any further. | |
3696 // | |
3697 // A NULL method_refs is different than an empty method_refs. | |
3698 // We cannot infer any optimizations about older generations | |
3699 // from an empty method_refs for the current generation. | |
3700 break; | |
3701 } | |
3702 | |
3703 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
|
3704 Method* method = method_refs->at(k); |
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 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3707 method->name() == m_name && |
0 | 3708 method->signature() == m_signature) { |
3709 // The current RedefineClasses() call has made all EMCP | |
3710 // 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
|
3711 // and remove the reference. |
0 | 3712 RC_TRACE(0x00000400, |
3713 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3714 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3715 | |
3716 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3717 // 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
|
3718 // clean up later. |
0 | 3719 break; |
3720 } | |
3721 } | |
3722 | |
3723 // The previous loop may not find a matching EMCP method, but | |
3724 // that doesn't mean that we can optimize and not go any | |
3725 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3726 // method for this generation could have already been deleted, |
0 | 3727 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3728 // been deleted. |
0 | 3729 } |
3730 | |
3731 if (++local_count >= obsolete_method_count) { | |
3732 // no more obsolete methods so bail out now | |
3733 break; | |
3734 } | |
3735 } | |
3736 } | |
3737 } | |
3738 } // end add_previous_version() | |
3739 | |
3740 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3741 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3742 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3743 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3744 } // end has_previous_version() |
3745 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3746 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3747 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3748 Method* m = NULL; |
0 | 3749 if (idnum < methods()->length()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3750 m = methods()->at(idnum); |
0 | 3751 } |
3752 if (m == NULL || m->method_idnum() != idnum) { | |
3753 for (int index = 0; index < methods()->length(); ++index) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3754 m = methods()->at(index); |
0 | 3755 if (m->method_idnum() == idnum) { |
3756 return m; | |
3757 } | |
3758 } | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3759 // None found, return null for the caller to handle. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3760 return NULL; |
0 | 3761 } |
3762 return m; | |
3763 } | |
3764 | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3765 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3766 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3767 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3768 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3769 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3770 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3771 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3772 |
0 | 3773 |
3774 // Construct a PreviousVersionNode entry for the array hung off | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3775 // the InstanceKlass. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3776 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3777 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3778 |
3779 _prev_constant_pool = prev_constant_pool; | |
3780 _prev_EMCP_methods = prev_EMCP_methods; | |
3781 } | |
3782 | |
3783 | |
3784 // Destroy a PreviousVersionNode | |
3785 PreviousVersionNode::~PreviousVersionNode() { | |
3786 if (_prev_constant_pool != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3787 _prev_constant_pool = NULL; |
0 | 3788 } |
3789 | |
3790 if (_prev_EMCP_methods != NULL) { | |
3791 delete _prev_EMCP_methods; | |
3792 } | |
3793 } | |
3794 | |
3795 // Construct a helper for walking the previous versions array | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3796 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3797 _thread = thread; |
0 | 3798 _previous_versions = ik->previous_versions(); |
3799 _current_index = 0; | |
3800 _current_p = NULL; | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3801 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3802 } |
3803 | |
3804 | |
3805 // Return the interesting information for the next previous version | |
3806 // of the klass. Returns NULL if there are no more previous versions. | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3807 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3808 if (_previous_versions == NULL) { |
3809 // no previous versions so nothing to return | |
3810 return NULL; | |
3811 } | |
3812 | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3813 _current_p = NULL; // reset to NULL |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3814 _current_constant_pool_handle = NULL; |
0 | 3815 |
3816 int length = _previous_versions->length(); | |
3817 | |
3818 while (_current_index < length) { | |
3819 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3820 |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3821 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3822 // which keeps all the methods from being deallocated. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3823 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3824 _current_p = pv_node; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3825 return pv_node; |
0 | 3826 } |
3827 | |
3828 return NULL; | |
3829 } // end next_previous_version() |