Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 14500:fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
Summary: support for speculative traps that keep track of the root of the compilation in which a trap occurs.
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Tue, 25 Feb 2014 18:16:24 +0100 |
| parents | 28f281e8de1d |
| children | 47f00f3b3900 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/javaClasses.hpp" | |
| 27 #include "classfile/systemDictionary.hpp" | |
| 28 #include "classfile/verifier.hpp" | |
| 29 #include "classfile/vmSymbols.hpp" | |
| 30 #include "compiler/compileBroker.hpp" | |
| 31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "interpreter/oopMapCache.hpp" | |
| 34 #include "interpreter/rewriter.hpp" | |
| 35 #include "jvmtifiles/jvmti.h" | |
| 36 #include "memory/genOopClosures.inline.hpp" | |
| 7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/metadataFactory.hpp" |
| 1972 | 39 #include "memory/oopFactory.hpp" |
| 3938 | 40 #include "oops/fieldStreams.hpp" |
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41 #include "oops/instanceClassLoaderKlass.hpp" |
| 1972 | 42 #include "oops/instanceKlass.hpp" |
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43 #include "oops/instanceMirrorKlass.hpp" |
| 1972 | 44 #include "oops/instanceOop.hpp" |
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45 #include "oops/klass.inline.hpp" |
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46 #include "oops/method.hpp" |
| 1972 | 47 #include "oops/oop.inline.hpp" |
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48 #include "oops/symbol.hpp" |
| 1972 | 49 #include "prims/jvmtiExport.hpp" |
| 50 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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51 #include "prims/jvmtiRedefineClasses.hpp" |
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52 #include "prims/methodComparator.hpp" |
| 1972 | 53 #include "runtime/fieldDescriptor.hpp" |
| 54 #include "runtime/handles.inline.hpp" | |
| 55 #include "runtime/javaCalls.hpp" | |
| 56 #include "runtime/mutexLocker.hpp" | |
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57 #include "runtime/thread.inline.hpp" |
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58 #include "services/classLoadingService.hpp" |
| 1972 | 59 #include "services/threadService.hpp" |
| 60 #include "utilities/dtrace.hpp" | |
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61 #include "utilities/macros.hpp" |
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62 #if INCLUDE_ALL_GCS |
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63 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
| 1972 | 64 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
| 65 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
| 66 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
| 67 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
| 68 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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69 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
| 1972 | 70 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
| 71 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
| 72 #include "oops/oop.pcgc.inline.hpp" | |
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73 #endif // INCLUDE_ALL_GCS |
| 1972 | 74 #ifdef COMPILER1 |
| 75 #include "c1/c1_Compiler.hpp" | |
| 76 #endif | |
| 0 | 77 |
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78 #ifdef DTRACE_ENABLED |
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79 |
| 4006 | 80 |
| 81 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
| 82 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
| 83 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
| 84 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
| 85 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
| 86 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
| 87 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
| 88 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
| 89 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
| 90 { \ | |
| 91 char* data = NULL; \ | |
| 92 int len = 0; \ | |
| 93 Symbol* name = (clss)->name(); \ | |
| 94 if (name != NULL) { \ | |
| 95 data = (char*)name->bytes(); \ | |
| 96 len = name->utf8_length(); \ | |
| 97 } \ | |
| 98 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
| 99 data, len, (clss)->class_loader(), thread_type); \ | |
| 100 } | |
| 101 | |
| 102 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
| 103 { \ | |
| 104 char* data = NULL; \ | |
| 105 int len = 0; \ | |
| 106 Symbol* name = (clss)->name(); \ | |
| 107 if (name != NULL) { \ | |
| 108 data = (char*)name->bytes(); \ | |
| 109 len = name->utf8_length(); \ | |
| 110 } \ | |
| 111 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
| 112 data, len, (clss)->class_loader(), thread_type, wait); \ | |
| 113 } | |
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114 |
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115 #else // ndef DTRACE_ENABLED |
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116 |
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117 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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118 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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119 |
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120 #endif // ndef DTRACE_ENABLED |
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121 |
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122 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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123 |
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124 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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125 ClassLoaderData* loader_data, |
| 8031 | 126 int vtable_len, |
| 127 int itable_len, | |
| 128 int static_field_size, | |
| 129 int nonstatic_oop_map_size, | |
| 130 ReferenceType rt, | |
| 131 AccessFlags access_flags, | |
| 132 Symbol* name, | |
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133 Klass* super_klass, |
| 8031 | 134 bool is_anonymous, |
| 135 TRAPS) { | |
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136 |
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137 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
| 8031 | 138 access_flags.is_interface(), is_anonymous); |
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139 |
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140 // Allocation |
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141 InstanceKlass* ik; |
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142 if (rt == REF_NONE) { |
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143 if (name == vmSymbols::java_lang_Class()) { |
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144 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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145 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
| 8031 | 146 access_flags, is_anonymous); |
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147 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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148 (SystemDictionary::ClassLoader_klass_loaded() && |
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149 super_klass != NULL && |
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150 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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151 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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152 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
| 8031 | 153 access_flags, is_anonymous); |
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154 } else { |
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155 // normal class |
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156 ik = new (loader_data, size, THREAD) InstanceKlass( |
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157 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
| 8031 | 158 access_flags, is_anonymous); |
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159 } |
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160 } else { |
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161 // reference klass |
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162 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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163 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
| 8031 | 164 access_flags, is_anonymous); |
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165 } |
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166 |
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167 // Check for pending exception before adding to the loader data and incrementing |
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168 // class count. Can get OOM here. |
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169 if (HAS_PENDING_EXCEPTION) { |
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170 return NULL; |
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171 } |
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172 |
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173 // Add all classes to our internal class loader list here, |
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174 // including classes in the bootstrap (NULL) class loader. |
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175 loader_data->add_class(ik); |
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176 |
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177 Atomic::inc(&_total_instanceKlass_count); |
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178 return ik; |
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179 } |
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180 |
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181 |
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182 // copy method ordering from resource area to Metaspace |
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183 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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184 if (m != NULL) { |
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185 // allocate a new array and copy contents (memcpy?) |
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186 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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187 for (int i = 0; i < m->length(); i++) { |
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188 _method_ordering->at_put(i, m->at(i)); |
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189 } |
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190 } else { |
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191 _method_ordering = Universe::the_empty_int_array(); |
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192 } |
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193 } |
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194 |
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195 // create a new array of vtable_indices for default methods |
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196 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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197 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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198 assert(default_vtable_indices() == NULL, "only create once"); |
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199 set_default_vtable_indices(vtable_indices); |
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200 return vtable_indices; |
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201 } |
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202 |
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203 InstanceKlass::InstanceKlass(int vtable_len, |
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204 int itable_len, |
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205 int static_field_size, |
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206 int nonstatic_oop_map_size, |
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207 ReferenceType rt, |
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208 AccessFlags access_flags, |
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209 bool is_anonymous) { |
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210 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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211 |
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212 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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213 access_flags.is_interface(), is_anonymous); |
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214 |
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215 set_vtable_length(vtable_len); |
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216 set_itable_length(itable_len); |
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217 set_static_field_size(static_field_size); |
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218 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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219 set_access_flags(access_flags); |
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220 _misc_flags = 0; // initialize to zero |
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221 set_is_anonymous(is_anonymous); |
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222 assert(size() == iksize, "wrong size for object"); |
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223 |
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224 set_array_klasses(NULL); |
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225 set_methods(NULL); |
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226 set_method_ordering(NULL); |
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227 set_default_methods(NULL); |
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228 set_default_vtable_indices(NULL); |
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229 set_local_interfaces(NULL); |
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230 set_transitive_interfaces(NULL); |
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231 init_implementor(); |
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232 set_fields(NULL, 0); |
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233 set_constants(NULL); |
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234 set_class_loader_data(NULL); |
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235 set_source_file_name_index(0); |
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236 set_source_debug_extension(NULL, 0); |
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237 set_array_name(NULL); |
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238 set_inner_classes(NULL); |
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239 set_static_oop_field_count(0); |
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240 set_nonstatic_field_size(0); |
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241 set_is_marked_dependent(false); |
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242 set_init_state(InstanceKlass::allocated); |
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243 set_init_thread(NULL); |
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244 set_reference_type(rt); |
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245 set_oop_map_cache(NULL); |
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246 set_jni_ids(NULL); |
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247 set_osr_nmethods_head(NULL); |
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248 set_breakpoints(NULL); |
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249 init_previous_versions(); |
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250 set_generic_signature_index(0); |
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251 release_set_methods_jmethod_ids(NULL); |
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252 set_annotations(NULL); |
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253 set_jvmti_cached_class_field_map(NULL); |
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254 set_initial_method_idnum(0); |
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255 _dependencies = NULL; |
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256 set_jvmti_cached_class_field_map(NULL); |
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257 set_cached_class_file(NULL); |
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258 set_initial_method_idnum(0); |
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259 set_minor_version(0); |
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260 set_major_version(0); |
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261 NOT_PRODUCT(_verify_count = 0;) |
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262 |
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263 // initialize the non-header words to zero |
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264 intptr_t* p = (intptr_t*)this; |
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265 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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266 p[index] = NULL_WORD; |
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267 } |
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268 |
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269 // Set temporary value until parseClassFile updates it with the real instance |
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270 // size. |
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271 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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272 } |
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273 |
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274 |
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275 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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276 Array<Method*>* methods) { |
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277 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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278 !methods->is_shared()) { |
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279 for (int i = 0; i < methods->length(); i++) { |
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280 Method* method = methods->at(i); |
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281 if (method == NULL) continue; // maybe null if error processing |
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282 // Only want to delete methods that are not executing for RedefineClasses. |
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283 // The previous version will point to them so they're not totally dangling |
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284 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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285 MetadataFactory::free_metadata(loader_data, method); |
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286 } |
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287 MetadataFactory::free_array<Method*>(loader_data, methods); |
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288 } |
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289 } |
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290 |
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291 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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292 Klass* super_klass, |
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293 Array<Klass*>* local_interfaces, |
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294 Array<Klass*>* transitive_interfaces) { |
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295 // Only deallocate transitive interfaces if not empty, same as super class |
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296 // or same as local interfaces. See code in parseClassFile. |
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297 Array<Klass*>* ti = transitive_interfaces; |
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298 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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299 // check that the interfaces don't come from super class |
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300 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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301 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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302 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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303 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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304 } |
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305 } |
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306 |
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307 // local interfaces can be empty |
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308 if (local_interfaces != Universe::the_empty_klass_array() && |
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309 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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310 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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311 } |
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312 } |
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313 |
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314 // This function deallocates the metadata and C heap pointers that the |
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315 // InstanceKlass points to. |
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316 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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317 |
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318 // Orphan the mirror first, CMS thinks it's still live. |
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319 if (java_mirror() != NULL) { |
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320 java_lang_Class::set_klass(java_mirror(), NULL); |
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321 } |
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322 |
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323 // Need to take this class off the class loader data list. |
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324 loader_data->remove_class(this); |
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325 |
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326 // The array_klass for this class is created later, after error handling. |
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327 // For class redefinition, we keep the original class so this scratch class |
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328 // doesn't have an array class. Either way, assert that there is nothing |
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329 // to deallocate. |
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330 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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331 |
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332 // Release C heap allocated data that this might point to, which includes |
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333 // reference counting symbol names. |
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334 release_C_heap_structures(); |
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335 |
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336 deallocate_methods(loader_data, methods()); |
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337 set_methods(NULL); |
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338 |
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339 if (method_ordering() != NULL && |
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340 method_ordering() != Universe::the_empty_int_array() && |
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341 !method_ordering()->is_shared()) { |
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342 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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343 } |
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344 set_method_ordering(NULL); |
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345 |
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346 // default methods can be empty |
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347 if (default_methods() != NULL && |
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348 default_methods() != Universe::the_empty_method_array() && |
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349 !default_methods()->is_shared()) { |
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350 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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351 } |
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352 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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353 set_default_methods(NULL); |
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354 |
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355 // default methods vtable indices can be empty |
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356 if (default_vtable_indices() != NULL && |
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357 !default_vtable_indices()->is_shared()) { |
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358 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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359 } |
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360 set_default_vtable_indices(NULL); |
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361 |
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362 |
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363 // This array is in Klass, but remove it with the InstanceKlass since |
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364 // this place would be the only caller and it can share memory with transitive |
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365 // interfaces. |
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366 if (secondary_supers() != NULL && |
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367 secondary_supers() != Universe::the_empty_klass_array() && |
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368 secondary_supers() != transitive_interfaces() && |
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369 !secondary_supers()->is_shared()) { |
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370 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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371 } |
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372 set_secondary_supers(NULL); |
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373 |
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374 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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375 set_transitive_interfaces(NULL); |
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376 set_local_interfaces(NULL); |
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377 |
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378 if (fields() != NULL && !fields()->is_shared()) { |
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379 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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380 } |
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381 set_fields(NULL, 0); |
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382 |
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383 // If a method from a redefined class is using this constant pool, don't |
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384 // delete it, yet. The new class's previous version will point to this. |
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385 if (constants() != NULL) { |
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386 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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387 if (!constants()->is_shared()) { |
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388 MetadataFactory::free_metadata(loader_data, constants()); |
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389 } |
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390 set_constants(NULL); |
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391 } |
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392 |
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393 if (inner_classes() != NULL && |
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394 inner_classes() != Universe::the_empty_short_array() && |
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395 !inner_classes()->is_shared()) { |
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396 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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397 } |
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398 set_inner_classes(NULL); |
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399 |
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400 // We should deallocate the Annotations instance if it's not in shared spaces. |
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401 if (annotations() != NULL && !annotations()->is_shared()) { |
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402 MetadataFactory::free_metadata(loader_data, annotations()); |
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403 } |
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404 set_annotations(NULL); |
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405 } |
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406 |
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407 bool InstanceKlass::should_be_initialized() const { |
| 0 | 408 return !is_initialized(); |
| 409 } | |
| 410 | |
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411 klassVtable* InstanceKlass::vtable() const { |
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412 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
| 0 | 413 } |
| 414 | |
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415 klassItable* InstanceKlass::itable() const { |
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416 return new klassItable(instanceKlassHandle(this)); |
| 0 | 417 } |
| 418 | |
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419 void InstanceKlass::eager_initialize(Thread *thread) { |
| 0 | 420 if (!EagerInitialization) return; |
| 421 | |
| 422 if (this->is_not_initialized()) { | |
| 423 // abort if the the class has a class initializer | |
| 424 if (this->class_initializer() != NULL) return; | |
| 425 | |
| 426 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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427 Klass* super = this->super(); |
| 0 | 428 if (super == NULL) return; |
| 429 | |
| 430 // abort if the super class should be initialized | |
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431 if (!InstanceKlass::cast(super)->is_initialized()) return; |
| 0 | 432 |
| 433 // call body to expose the this pointer | |
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434 instanceKlassHandle this_oop(thread, this); |
| 0 | 435 eager_initialize_impl(this_oop); |
| 436 } | |
| 437 } | |
| 438 | |
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439 // JVMTI spec thinks there are signers and protection domain in the |
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440 // instanceKlass. These accessors pretend these fields are there. |
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441 // The hprof specification also thinks these fields are in InstanceKlass. |
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442 oop InstanceKlass::protection_domain() const { |
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443 // return the protection_domain from the mirror |
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444 return java_lang_Class::protection_domain(java_mirror()); |
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445 } |
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446 |
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447 // To remove these from requires an incompatible change and CCC request. |
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448 objArrayOop InstanceKlass::signers() const { |
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449 // return the signers from the mirror |
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450 return java_lang_Class::signers(java_mirror()); |
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451 } |
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452 |
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453 oop InstanceKlass::init_lock() const { |
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454 // return the init lock from the mirror |
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455 oop lock = java_lang_Class::init_lock(java_mirror()); |
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456 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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457 "only fully initialized state can have a null lock"); |
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458 return lock; |
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459 } |
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460 |
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461 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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462 // threads to get this lock will see a null lock and will not lock. |
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463 // That's okay because they all check for initialized state after getting |
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464 // the lock and return. |
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465 void InstanceKlass::fence_and_clear_init_lock() { |
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466 // make sure previous stores are all done, notably the init_state. |
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467 OrderAccess::storestore(); |
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468 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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469 assert(!is_not_initialized(), "class must be initialized now"); |
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470 } |
| 0 | 471 |
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472 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
| 0 | 473 EXCEPTION_MARK; |
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474 oop init_lock = this_oop->init_lock(); |
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475 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
| 0 | 476 |
| 477 // abort if someone beat us to the initialization | |
| 478 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
| 479 | |
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480 ClassState old_state = this_oop->init_state(); |
| 0 | 481 link_class_impl(this_oop, true, THREAD); |
| 482 if (HAS_PENDING_EXCEPTION) { | |
| 483 CLEAR_PENDING_EXCEPTION; | |
| 484 // Abort if linking the class throws an exception. | |
| 485 | |
| 486 // Use a test to avoid redundantly resetting the state if there's | |
| 487 // no change. Set_init_state() asserts that state changes make | |
| 488 // progress, whereas here we might just be spinning in place. | |
| 489 if( old_state != this_oop->_init_state ) | |
| 490 this_oop->set_init_state (old_state); | |
| 491 } else { | |
| 492 // linking successfull, mark class as initialized | |
| 493 this_oop->set_init_state (fully_initialized); | |
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494 this_oop->fence_and_clear_init_lock(); |
| 0 | 495 // trace |
| 496 if (TraceClassInitialization) { | |
| 497 ResourceMark rm(THREAD); | |
| 498 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
| 499 } | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 | |
| 504 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
| 505 // process. The step comments refers to the procedure described in that section. | |
| 506 // Note: implementation moved to static method to expose the this pointer. | |
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507 void InstanceKlass::initialize(TRAPS) { |
| 0 | 508 if (this->should_be_initialized()) { |
| 509 HandleMark hm(THREAD); | |
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510 instanceKlassHandle this_oop(THREAD, this); |
| 0 | 511 initialize_impl(this_oop, CHECK); |
| 512 // Note: at this point the class may be initialized | |
| 513 // OR it may be in the state of being initialized | |
| 514 // in case of recursive initialization! | |
| 515 } else { | |
| 516 assert(is_initialized(), "sanity check"); | |
| 517 } | |
| 518 } | |
| 519 | |
| 520 | |
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521 bool InstanceKlass::verify_code( |
| 0 | 522 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
| 523 // 1) Verify the bytecodes | |
| 524 Verifier::Mode mode = | |
| 525 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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526 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
| 0 | 527 } |
| 528 | |
| 529 | |
| 530 // Used exclusively by the shared spaces dump mechanism to prevent | |
| 531 // classes mapped into the shared regions in new VMs from appearing linked. | |
| 532 | |
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533 void InstanceKlass::unlink_class() { |
| 0 | 534 assert(is_linked(), "must be linked"); |
| 535 _init_state = loaded; | |
| 536 } | |
| 537 | |
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538 void InstanceKlass::link_class(TRAPS) { |
| 0 | 539 assert(is_loaded(), "must be loaded"); |
| 540 if (!is_linked()) { | |
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541 HandleMark hm(THREAD); |
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542 instanceKlassHandle this_oop(THREAD, this); |
| 0 | 543 link_class_impl(this_oop, true, CHECK); |
| 544 } | |
| 545 } | |
| 546 | |
| 547 // Called to verify that a class can link during initialization, without | |
| 548 // throwing a VerifyError. | |
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549 bool InstanceKlass::link_class_or_fail(TRAPS) { |
| 0 | 550 assert(is_loaded(), "must be loaded"); |
| 551 if (!is_linked()) { | |
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552 HandleMark hm(THREAD); |
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553 instanceKlassHandle this_oop(THREAD, this); |
| 0 | 554 link_class_impl(this_oop, false, CHECK_false); |
| 555 } | |
| 556 return is_linked(); | |
| 557 } | |
| 558 | |
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559 bool InstanceKlass::link_class_impl( |
| 0 | 560 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
| 561 // check for error state | |
| 562 if (this_oop->is_in_error_state()) { | |
| 563 ResourceMark rm(THREAD); | |
| 564 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
| 565 this_oop->external_name(), false); | |
| 566 } | |
| 567 // return if already verified | |
| 568 if (this_oop->is_linked()) { | |
| 569 return true; | |
| 570 } | |
| 571 | |
| 572 // Timing | |
| 573 // timer handles recursion | |
| 574 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
| 575 JavaThread* jt = (JavaThread*)THREAD; | |
| 576 | |
| 577 // link super class before linking this class | |
| 578 instanceKlassHandle super(THREAD, this_oop->super()); | |
| 579 if (super.not_null()) { | |
| 580 if (super->is_interface()) { // check if super class is an interface | |
| 581 ResourceMark rm(THREAD); | |
| 582 Exceptions::fthrow( | |
| 583 THREAD_AND_LOCATION, | |
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584 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 585 "class %s has interface %s as super class", |
| 586 this_oop->external_name(), | |
| 587 super->external_name() | |
| 588 ); | |
| 589 return false; | |
| 590 } | |
| 591 | |
| 592 link_class_impl(super, throw_verifyerror, CHECK_false); | |
| 593 } | |
| 594 | |
| 595 // link all interfaces implemented by this class before linking this class | |
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596 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
| 0 | 597 int num_interfaces = interfaces->length(); |
| 598 for (int index = 0; index < num_interfaces; index++) { | |
| 599 HandleMark hm(THREAD); | |
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600 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
| 0 | 601 link_class_impl(ih, throw_verifyerror, CHECK_false); |
| 602 } | |
| 603 | |
| 604 // in case the class is linked in the process of linking its superclasses | |
| 605 if (this_oop->is_linked()) { | |
| 606 return true; | |
| 607 } | |
| 608 | |
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609 // trace only the link time for this klass that includes |
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610 // the verification time |
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611 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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612 ClassLoader::perf_class_link_selftime(), |
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613 ClassLoader::perf_classes_linked(), |
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614 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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615 jt->get_thread_stat()->perf_timers_addr(), |
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616 PerfClassTraceTime::CLASS_LINK); |
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617 |
| 0 | 618 // verification & rewriting |
| 619 { | |
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620 oop init_lock = this_oop->init_lock(); |
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621 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
| 0 | 622 // rewritten will have been set if loader constraint error found |
| 623 // on an earlier link attempt | |
| 624 // don't verify or rewrite if already rewritten | |
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625 |
| 0 | 626 if (!this_oop->is_linked()) { |
| 627 if (!this_oop->is_rewritten()) { | |
| 628 { | |
| 629 // Timer includes any side effects of class verification (resolution, | |
| 630 // etc), but not recursive entry into verify_code(). | |
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631 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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632 ClassLoader::perf_class_verify_selftime(), |
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633 ClassLoader::perf_classes_verified(), |
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634 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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635 jt->get_thread_stat()->perf_timers_addr(), |
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636 PerfClassTraceTime::CLASS_VERIFY); |
| 0 | 637 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
| 638 if (!verify_ok) { | |
| 639 return false; | |
| 640 } | |
| 641 } | |
| 642 | |
| 643 // Just in case a side-effect of verify linked this class already | |
| 644 // (which can sometimes happen since the verifier loads classes | |
| 645 // using custom class loaders, which are free to initialize things) | |
| 646 if (this_oop->is_linked()) { | |
| 647 return true; | |
| 648 } | |
| 649 | |
| 650 // also sets rewritten | |
| 651 this_oop->rewrite_class(CHECK_false); | |
| 652 } | |
| 653 | |
| 3748 | 654 // relocate jsrs and link methods after they are all rewritten |
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655 this_oop->link_methods(CHECK_false); |
| 3748 | 656 |
| 0 | 657 // Initialize the vtable and interface table after |
| 658 // methods have been rewritten since rewrite may | |
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659 // fabricate new Method*s. |
| 0 | 660 // also does loader constraint checking |
| 661 if (!this_oop()->is_shared()) { | |
| 662 ResourceMark rm(THREAD); | |
| 663 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
| 664 this_oop->itable()->initialize_itable(true, CHECK_false); | |
| 665 } | |
| 666 #ifdef ASSERT | |
| 667 else { | |
| 668 ResourceMark rm(THREAD); | |
| 669 this_oop->vtable()->verify(tty, true); | |
| 670 // In case itable verification is ever added. | |
| 671 // this_oop->itable()->verify(tty, true); | |
| 672 } | |
| 673 #endif | |
| 674 this_oop->set_init_state(linked); | |
| 675 if (JvmtiExport::should_post_class_prepare()) { | |
| 676 Thread *thread = THREAD; | |
| 677 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
| 678 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
| 679 } | |
| 680 } | |
| 681 } | |
| 682 return true; | |
| 683 } | |
| 684 | |
| 685 | |
| 686 // Rewrite the byte codes of all of the methods of a class. | |
| 687 // The rewriter must be called exactly once. Rewriting must happen after | |
| 688 // verification but before the first method of the class is executed. | |
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689 void InstanceKlass::rewrite_class(TRAPS) { |
| 0 | 690 assert(is_loaded(), "must be loaded"); |
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691 instanceKlassHandle this_oop(THREAD, this); |
| 0 | 692 if (this_oop->is_rewritten()) { |
| 693 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
| 694 return; | |
| 695 } | |
| 3748 | 696 Rewriter::rewrite(this_oop, CHECK); |
| 0 | 697 this_oop->set_rewritten(); |
| 698 } | |
| 699 | |
| 3748 | 700 // Now relocate and link method entry points after class is rewritten. |
| 701 // This is outside is_rewritten flag. In case of an exception, it can be | |
| 702 // executed more than once. | |
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703 void InstanceKlass::link_methods(TRAPS) { |
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704 int len = methods()->length(); |
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705 for (int i = len-1; i >= 0; i--) { |
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706 methodHandle m(THREAD, methods()->at(i)); |
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707 |
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708 // Set up method entry points for compiler and interpreter . |
|
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709 m->link_method(m, CHECK); |
|
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710 |
|
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711 // This is for JVMTI and unrelated to relocator but the last thing we do |
|
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712 #ifdef ASSERT |
|
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713 if (StressMethodComparator) { |
|
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714 ResourceMark rm(THREAD); |
|
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715 static int nmc = 0; |
|
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716 for (int j = i; j >= 0 && j >= i-4; j--) { |
|
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717 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
|
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718 bool z = MethodComparator::methods_EMCP(m(), |
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719 methods()->at(j)); |
|
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720 if (j == i && !z) { |
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721 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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722 assert(z, "method must compare equal to itself"); |
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723 } |
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724 } |
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725 } |
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726 #endif //ASSERT |
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727 } |
| 3748 | 728 } |
| 729 | |
| 0 | 730 |
|
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731 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
| 0 | 732 // Make sure klass is linked (verified) before initialization |
| 733 // A class could already be verified, since it has been reflected upon. | |
| 734 this_oop->link_class(CHECK); | |
| 735 | |
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736 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
|
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737 |
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738 bool wait = false; |
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739 |
| 0 | 740 // refer to the JVM book page 47 for description of steps |
| 741 // Step 1 | |
|
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742 { |
|
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743 oop init_lock = this_oop->init_lock(); |
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744 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
| 0 | 745 |
| 746 Thread *self = THREAD; // it's passed the current thread | |
| 747 | |
| 748 // Step 2 | |
| 749 // If we were to use wait() instead of waitInterruptibly() then | |
| 750 // we might end up throwing IE from link/symbol resolution sites | |
| 751 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
| 752 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
|
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753 wait = true; |
| 0 | 754 ol.waitUninterruptibly(CHECK); |
| 755 } | |
| 756 | |
| 757 // Step 3 | |
|
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758 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
|
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759 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 760 return; |
|
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761 } |
| 0 | 762 |
| 763 // Step 4 | |
|
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764 if (this_oop->is_initialized()) { |
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765 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 766 return; |
|
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767 } |
| 0 | 768 |
| 769 // Step 5 | |
| 770 if (this_oop->is_in_error_state()) { | |
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771 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 772 ResourceMark rm(THREAD); |
| 773 const char* desc = "Could not initialize class "; | |
| 774 const char* className = this_oop->external_name(); | |
| 775 size_t msglen = strlen(desc) + strlen(className) + 1; | |
|
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776 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 777 if (NULL == message) { |
| 778 // Out of memory: can't create detailed error message | |
| 779 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
| 780 } else { | |
| 781 jio_snprintf(message, msglen, "%s%s", desc, className); | |
| 782 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
| 783 } | |
| 784 } | |
| 785 | |
| 786 // Step 6 | |
| 787 this_oop->set_init_state(being_initialized); | |
| 788 this_oop->set_init_thread(self); | |
| 789 } | |
| 790 | |
| 791 // Step 7 | |
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792 Klass* super_klass = this_oop->super(); |
| 6983 | 793 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
| 794 super_klass->initialize(THREAD); | |
| 0 | 795 |
| 796 if (HAS_PENDING_EXCEPTION) { | |
| 797 Handle e(THREAD, PENDING_EXCEPTION); | |
| 798 CLEAR_PENDING_EXCEPTION; | |
| 799 { | |
| 800 EXCEPTION_MARK; | |
| 801 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
| 802 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
| 803 } | |
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804 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 805 THROW_OOP(e()); |
| 806 } | |
| 807 } | |
| 808 | |
| 6934 | 809 if (this_oop->has_default_methods()) { |
| 810 // Step 7.5: initialize any interfaces which have default methods | |
| 811 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
| 812 Klass* iface = this_oop->local_interfaces()->at(i); | |
| 813 InstanceKlass* ik = InstanceKlass::cast(iface); | |
| 814 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
| 815 ik->initialize(THREAD); | |
| 816 | |
| 817 if (HAS_PENDING_EXCEPTION) { | |
| 818 Handle e(THREAD, PENDING_EXCEPTION); | |
| 819 CLEAR_PENDING_EXCEPTION; | |
| 820 { | |
| 821 EXCEPTION_MARK; | |
| 822 // Locks object, set state, and notify all waiting threads | |
| 823 this_oop->set_initialization_state_and_notify( | |
| 824 initialization_error, THREAD); | |
| 825 | |
| 826 // ignore any exception thrown, superclass initialization error is | |
| 827 // thrown below | |
| 828 CLEAR_PENDING_EXCEPTION; | |
| 829 } | |
| 830 DTRACE_CLASSINIT_PROBE_WAIT( | |
| 831 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
| 832 THROW_OOP(e()); | |
| 833 } | |
| 834 } | |
| 835 } | |
| 836 } | |
| 837 | |
| 0 | 838 // Step 8 |
| 839 { | |
| 840 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
| 841 JavaThread* jt = (JavaThread*)THREAD; | |
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842 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 843 // Timer includes any side effects of class initialization (resolution, |
| 844 // etc), but not recursive entry into call_class_initializer(). | |
|
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845 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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846 ClassLoader::perf_class_init_selftime(), |
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847 ClassLoader::perf_classes_inited(), |
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848 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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849 jt->get_thread_stat()->perf_timers_addr(), |
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850 PerfClassTraceTime::CLASS_CLINIT); |
| 0 | 851 this_oop->call_class_initializer(THREAD); |
| 852 } | |
| 853 | |
| 854 // Step 9 | |
| 855 if (!HAS_PENDING_EXCEPTION) { | |
| 856 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
| 857 { ResourceMark rm(THREAD); | |
| 858 debug_only(this_oop->vtable()->verify(tty, true);) | |
| 859 } | |
| 860 } | |
| 861 else { | |
| 862 // Step 10 and 11 | |
| 863 Handle e(THREAD, PENDING_EXCEPTION); | |
| 864 CLEAR_PENDING_EXCEPTION; | |
| 865 { | |
| 866 EXCEPTION_MARK; | |
| 867 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
| 868 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
| 869 } | |
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870 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
| 1142 | 871 if (e->is_a(SystemDictionary::Error_klass())) { |
| 0 | 872 THROW_OOP(e()); |
| 873 } else { | |
| 874 JavaCallArguments args(e); | |
|
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875 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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876 vmSymbols::throwable_void_signature(), |
| 0 | 877 &args); |
| 878 } | |
| 879 } | |
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880 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
| 0 | 881 } |
| 882 | |
| 883 | |
| 884 // Note: implementation moved to static method to expose the this pointer. | |
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885 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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886 instanceKlassHandle kh(THREAD, this); |
| 0 | 887 set_initialization_state_and_notify_impl(kh, state, CHECK); |
| 888 } | |
| 889 | |
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890 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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891 oop init_lock = this_oop->init_lock(); |
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892 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
| 0 | 893 this_oop->set_init_state(state); |
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894 this_oop->fence_and_clear_init_lock(); |
| 0 | 895 ol.notify_all(CHECK); |
| 896 } | |
| 897 | |
|
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898 // The embedded _implementor field can only record one implementor. |
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899 // When there are more than one implementors, the _implementor field |
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900 // is set to the interface Klass* itself. Following are the possible |
|
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901 // values for the _implementor field: |
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902 // NULL - no implementor |
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903 // implementor Klass* - one implementor |
|
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904 // self - more than one implementor |
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905 // |
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906 // The _implementor field only exists for interfaces. |
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907 void InstanceKlass::add_implementor(Klass* k) { |
| 0 | 908 assert(Compile_lock->owned_by_self(), ""); |
|
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909 assert(is_interface(), "not interface"); |
| 0 | 910 // Filter out my subinterfaces. |
| 911 // (Note: Interfaces are never on the subklass list.) | |
|
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912 if (InstanceKlass::cast(k)->is_interface()) return; |
| 0 | 913 |
| 914 // Filter out subclasses whose supers already implement me. | |
| 915 // (Note: CHA must walk subclasses of direct implementors | |
| 916 // in order to locate indirect implementors.) | |
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917 Klass* sk = InstanceKlass::cast(k)->super(); |
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918 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
| 0 | 919 // We only need to check one immediate superclass, since the |
| 920 // implements_interface query looks at transitive_interfaces. | |
| 921 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
| 922 return; | |
| 923 | |
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924 Klass* ik = implementor(); |
|
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925 if (ik == NULL) { |
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926 set_implementor(k); |
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927 } else if (ik != this) { |
|
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928 // There is already an implementor. Use itself as an indicator of |
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929 // more than one implementors. |
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930 set_implementor(this); |
| 0 | 931 } |
| 932 | |
| 933 // The implementor also implements the transitive_interfaces | |
| 934 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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935 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
| 0 | 936 } |
| 937 } | |
| 938 | |
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939 void InstanceKlass::init_implementor() { |
|
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940 if (is_interface()) { |
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941 set_implementor(NULL); |
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942 } |
| 0 | 943 } |
| 944 | |
| 945 | |
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946 void InstanceKlass::process_interfaces(Thread *thread) { |
| 0 | 947 // link this class into the implementors list of every interface it implements |
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948 Klass* this_as_klass_oop = this; |
| 0 | 949 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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950 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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951 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
| 0 | 952 assert(interf->is_interface(), "expected interface"); |
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953 interf->add_implementor(this_as_klass_oop); |
| 0 | 954 } |
| 955 } | |
| 956 | |
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957 bool InstanceKlass::can_be_primary_super_slow() const { |
| 0 | 958 if (is_interface()) |
| 959 return false; | |
| 960 else | |
| 961 return Klass::can_be_primary_super_slow(); | |
| 962 } | |
| 963 | |
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964 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
| 0 | 965 // The secondaries are the implemented interfaces. |
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966 InstanceKlass* ik = InstanceKlass::cast(this); |
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967 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
| 0 | 968 int num_secondaries = num_extra_slots + interfaces->length(); |
| 969 if (num_secondaries == 0) { | |
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970 // Must share this for correct bootstrapping! |
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971 set_secondary_supers(Universe::the_empty_klass_array()); |
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972 return NULL; |
| 0 | 973 } else if (num_extra_slots == 0) { |
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974 // The secondary super list is exactly the same as the transitive interfaces. |
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975 // Redefine classes has to be careful not to delete this! |
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976 set_secondary_supers(interfaces); |
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977 return NULL; |
| 0 | 978 } else { |
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979 // Copy transitive interfaces to a temporary growable array to be constructed |
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980 // into the secondary super list with extra slots. |
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981 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
| 0 | 982 for (int i = 0; i < interfaces->length(); i++) { |
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983 secondaries->push(interfaces->at(i)); |
| 0 | 984 } |
| 985 return secondaries; | |
| 986 } | |
| 987 } | |
| 988 | |
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989 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
| 6983 | 990 if (k->is_interface()) { |
| 0 | 991 return implements_interface(k); |
| 992 } else { | |
| 993 return Klass::compute_is_subtype_of(k); | |
| 994 } | |
| 995 } | |
| 996 | |
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997 bool InstanceKlass::implements_interface(Klass* k) const { |
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998 if (this == k) return true; |
| 6983 | 999 assert(k->is_interface(), "should be an interface class"); |
| 0 | 1000 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1001 if (transitive_interfaces()->at(i) == k) { |
| 0 | 1002 return true; |
| 1003 } | |
| 1004 } | |
| 1005 return false; | |
| 1006 } | |
| 1007 | |
|
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1008 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1009 // Verify direct super interface |
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1010 if (this == k) return true; |
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1011 assert(k->is_interface(), "should be an interface class"); |
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1012 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1013 if (local_interfaces()->at(i) == k) { |
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1014 return true; |
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1015 } |
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1016 } |
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1017 return false; |
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1018 } |
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1019 |
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1020 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
| 0 | 1021 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| 1022 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
|
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1023 report_java_out_of_memory("Requested array size exceeds VM limit"); |
|
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1024 JvmtiExport::post_array_size_exhausted(); |
| 0 | 1025 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
| 1026 } | |
| 1027 int size = objArrayOopDesc::object_size(length); | |
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1028 Klass* ak = array_klass(n, CHECK_NULL); |
| 0 | 1029 KlassHandle h_ak (THREAD, ak); |
| 1030 objArrayOop o = | |
| 1031 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
| 1032 return o; | |
| 1033 } | |
| 1034 | |
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1035 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
| 0 | 1036 if (TraceFinalizerRegistration) { |
| 1037 tty->print("Registered "); | |
| 1038 i->print_value_on(tty); | |
| 1039 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
| 1040 } | |
| 1041 instanceHandle h_i(THREAD, i); | |
| 1042 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
| 1043 JavaValue result(T_VOID); | |
| 1044 JavaCallArguments args(h_i); | |
| 1045 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
| 1046 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
| 1047 return h_i(); | |
| 1048 } | |
| 1049 | |
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1050 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
| 0 | 1051 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
| 1052 int size = size_helper(); // Query before forming handle. | |
| 1053 | |
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1054 KlassHandle h_k(THREAD, this); |
| 0 | 1055 |
| 1056 instanceOop i; | |
| 1057 | |
| 1058 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
| 1059 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
| 1060 i = register_finalizer(i, CHECK_NULL); | |
| 1061 } | |
| 1062 return i; | |
| 1063 } | |
| 1064 | |
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1065 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
| 0 | 1066 if (is_interface() || is_abstract()) { |
| 1067 ResourceMark rm(THREAD); | |
| 1068 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
| 1069 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
| 1070 } | |
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1071 if (this == SystemDictionary::Class_klass()) { |
| 0 | 1072 ResourceMark rm(THREAD); |
| 1073 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
| 1074 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
| 1075 } | |
| 1076 } | |
| 1077 | |
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1078 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1079 instanceKlassHandle this_oop(THREAD, this); |
| 0 | 1080 return array_klass_impl(this_oop, or_null, n, THREAD); |
| 1081 } | |
| 1082 | |
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1083 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
| 0 | 1084 if (this_oop->array_klasses() == NULL) { |
| 1085 if (or_null) return NULL; | |
| 1086 | |
| 1087 ResourceMark rm; | |
| 1088 JavaThread *jt = (JavaThread *)THREAD; | |
| 1089 { | |
| 1090 // Atomic creation of array_klasses | |
| 1091 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
| 1092 MutexLocker ma(MultiArray_lock, THREAD); | |
| 1093 | |
| 1094 // Check if update has already taken place | |
| 1095 if (this_oop->array_klasses() == NULL) { | |
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1096 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
| 0 | 1097 this_oop->set_array_klasses(k); |
| 1098 } | |
| 1099 } | |
| 1100 } | |
| 1101 // _this will always be set at this point | |
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1102 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
| 0 | 1103 if (or_null) { |
| 1104 return oak->array_klass_or_null(n); | |
| 1105 } | |
| 1106 return oak->array_klass(n, CHECK_NULL); | |
| 1107 } | |
| 1108 | |
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1109 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
| 0 | 1110 return array_klass_impl(or_null, 1, THREAD); |
| 1111 } | |
| 1112 | |
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1113 void InstanceKlass::call_class_initializer(TRAPS) { |
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1114 instanceKlassHandle ik (THREAD, this); |
| 0 | 1115 call_class_initializer_impl(ik, THREAD); |
| 1116 } | |
| 1117 | |
| 1118 static int call_class_initializer_impl_counter = 0; // for debugging | |
| 1119 | |
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1120 Method* InstanceKlass::class_initializer() { |
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1121 Method* clinit = find_method( |
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1122 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1123 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1124 return clinit; |
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1125 } |
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1126 return NULL; |
| 0 | 1127 } |
| 1128 | |
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1129 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1130 if (ReplayCompiles && |
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1131 (ReplaySuppressInitializers == 1 || |
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1132 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1133 // Hide the existence of the initializer for the purpose of replaying the compile |
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1134 return; |
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1135 } |
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1136 |
| 0 | 1137 methodHandle h_method(THREAD, this_oop->class_initializer()); |
| 1138 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
| 1139 if (TraceClassInitialization) { | |
| 1140 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
| 1141 this_oop->name()->print_value(); | |
| 1142 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
| 1143 } | |
| 1144 if (h_method() != NULL) { | |
| 1145 JavaCallArguments args; // No arguments | |
| 1146 JavaValue result(T_VOID); | |
| 1147 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
| 1148 } | |
| 1149 } | |
| 1150 | |
| 1151 | |
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1152 void InstanceKlass::mask_for(methodHandle method, int bci, |
| 0 | 1153 InterpreterOopMap* entry_for) { |
| 1154 // Dirty read, then double-check under a lock. | |
| 1155 if (_oop_map_cache == NULL) { | |
| 1156 // Otherwise, allocate a new one. | |
| 1157 MutexLocker x(OopMapCacheAlloc_lock); | |
| 1158 // First time use. Allocate a cache in C heap | |
| 1159 if (_oop_map_cache == NULL) { | |
|
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1160 // Release stores from OopMapCache constructor before assignment |
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1161 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1162 // required memory barrier only because of the volatile |
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1163 // qualifier of _oop_map_cache. |
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1164 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
| 0 | 1165 } |
| 1166 } | |
| 1167 // _oop_map_cache is constant after init; lookup below does is own locking. | |
| 1168 _oop_map_cache->lookup(method, bci, entry_for); | |
| 1169 } | |
| 1170 | |
| 1171 | |
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1172 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1173 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
| 3938 | 1174 Symbol* f_name = fs.name(); |
| 1175 Symbol* f_sig = fs.signature(); | |
| 0 | 1176 if (f_name == name && f_sig == sig) { |
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1177 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
| 0 | 1178 return true; |
| 1179 } | |
| 1180 } | |
| 1181 return false; | |
| 1182 } | |
| 1183 | |
| 1184 | |
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1185 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
| 0 | 1186 const int n = local_interfaces()->length(); |
| 1187 for (int i = 0; i < n; i++) { | |
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1188 Klass* intf1 = local_interfaces()->at(i); |
| 6983 | 1189 assert(intf1->is_interface(), "just checking type"); |
| 0 | 1190 // search for field in current interface |
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1191 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
| 0 | 1192 assert(fd->is_static(), "interface field must be static"); |
| 1193 return intf1; | |
| 1194 } | |
| 1195 // search for field in direct superinterfaces | |
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1196 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
| 0 | 1197 if (intf2 != NULL) return intf2; |
| 1198 } | |
| 1199 // otherwise field lookup fails | |
| 1200 return NULL; | |
| 1201 } | |
| 1202 | |
| 1203 | |
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1204 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
| 0 | 1205 // search order according to newest JVM spec (5.4.3.2, p.167). |
| 1206 // 1) search for field in current klass | |
| 1207 if (find_local_field(name, sig, fd)) { | |
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1208 return const_cast<InstanceKlass*>(this); |
| 0 | 1209 } |
| 1210 // 2) search for field recursively in direct superinterfaces | |
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1211 { Klass* intf = find_interface_field(name, sig, fd); |
| 0 | 1212 if (intf != NULL) return intf; |
| 1213 } | |
| 1214 // 3) apply field lookup recursively if superclass exists | |
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1215 { Klass* supr = super(); |
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1216 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
| 0 | 1217 } |
| 1218 // 4) otherwise field lookup fails | |
| 1219 return NULL; | |
| 1220 } | |
| 1221 | |
| 1222 | |
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1223 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
| 0 | 1224 // search order according to newest JVM spec (5.4.3.2, p.167). |
| 1225 // 1) search for field in current klass | |
| 1226 if (find_local_field(name, sig, fd)) { | |
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1227 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
| 0 | 1228 } |
| 1229 // 2) search for field recursively in direct superinterfaces | |
| 1230 if (is_static) { | |
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1231 Klass* intf = find_interface_field(name, sig, fd); |
| 0 | 1232 if (intf != NULL) return intf; |
| 1233 } | |
| 1234 // 3) apply field lookup recursively if superclass exists | |
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1235 { Klass* supr = super(); |
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1236 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
| 0 | 1237 } |
| 1238 // 4) otherwise field lookup fails | |
| 1239 return NULL; | |
| 1240 } | |
| 1241 | |
| 1242 | |
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1243 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1244 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
| 3938 | 1245 if (fs.offset() == offset) { |
|
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1246 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
| 0 | 1247 if (fd->is_static() == is_static) return true; |
| 1248 } | |
| 1249 } | |
| 1250 return false; | |
| 1251 } | |
| 1252 | |
| 1253 | |
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1254 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1255 Klass* klass = const_cast<InstanceKlass*>(this); |
| 0 | 1256 while (klass != NULL) { |
|
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1257 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
| 0 | 1258 return true; |
| 1259 } | |
| 6983 | 1260 klass = klass->super(); |
| 0 | 1261 } |
| 1262 return false; | |
| 1263 } | |
| 1264 | |
| 1265 | |
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1266 void InstanceKlass::methods_do(void f(Method* method)) { |
| 0 | 1267 int len = methods()->length(); |
| 1268 for (int index = 0; index < len; index++) { | |
|
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1269 Method* m = methods()->at(index); |
| 0 | 1270 assert(m->is_method(), "must be method"); |
| 1271 f(m); | |
| 1272 } | |
| 1273 } | |
| 1274 | |
|
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1275 |
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1276 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
| 3938 | 1277 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
| 1278 if (fs.access_flags().is_static()) { | |
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1279 fieldDescriptor& fd = fs.field_descriptor(); |
| 3938 | 1280 cl->do_field(&fd); |
| 1281 } | |
| 0 | 1282 } |
| 1283 } | |
| 1284 | |
| 1285 | |
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1286 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS) { |
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1287 instanceKlassHandle h_this(THREAD, this); |
| 0 | 1288 do_local_static_fields_impl(h_this, f, CHECK); |
| 1289 } | |
| 1290 | |
| 1291 | |
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1292 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS) { |
| 3938 | 1293 for (JavaFieldStream fs(this_oop()); !fs.done(); fs.next()) { |
| 1294 if (fs.access_flags().is_static()) { | |
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1295 fieldDescriptor& fd = fs.field_descriptor(); |
| 3938 | 1296 f(&fd, CHECK); |
| 1297 } | |
| 0 | 1298 } |
| 1299 } | |
| 1300 | |
| 1301 | |
|
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1302 static int compare_fields_by_offset(int* a, int* b) { |
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1303 return a[0] - b[0]; |
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1304 } |
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1305 |
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1306 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1307 InstanceKlass* super = superklass(); |
| 0 | 1308 if (super != NULL) { |
| 1309 super->do_nonstatic_fields(cl); | |
| 1310 } | |
|
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1311 fieldDescriptor fd; |
| 3938 | 1312 int length = java_fields_count(); |
|
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1313 // In DebugInfo nonstatic fields are sorted by offset. |
| 6197 | 1314 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
|
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1315 int j = 0; |
| 3938 | 1316 for (int i = 0; i < length; i += 1) { |
|
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1317 fd.reinitialize(this, i); |
|
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1318 if (!fd.is_static()) { |
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1319 fields_sorted[j + 0] = fd.offset(); |
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1320 fields_sorted[j + 1] = i; |
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1321 j += 2; |
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1322 } |
| 0 | 1323 } |
|
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1324 if (j > 0) { |
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1325 length = j; |
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1326 // _sort_Fn is defined in growableArray.hpp. |
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1327 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1328 for (int i = 0; i < length; i += 2) { |
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1329 fd.reinitialize(this, fields_sorted[i + 1]); |
|
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1330 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1331 cl->do_field(&fd); |
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1332 } |
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1333 } |
| 6197 | 1334 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
| 0 | 1335 } |
| 1336 | |
| 1337 | |
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1338 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1339 if (array_klasses() != NULL) |
|
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1340 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1341 } |
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1342 |
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1343 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
| 0 | 1344 if (array_klasses() != NULL) |
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1345 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
| 0 | 1346 } |
| 1347 | |
| 1348 #ifdef ASSERT | |
|
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1349 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
| 0 | 1350 int len = methods->length(); |
| 1351 for (int index = 0; index < len; index++) { | |
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1352 Method* m = methods->at(index); |
| 0 | 1353 assert(m->is_method(), "must be method"); |
| 1354 if (m->signature() == signature && m->name() == name) { | |
| 1355 return index; | |
| 1356 } | |
| 1357 } | |
| 1358 return -1; | |
| 1359 } | |
| 1360 #endif | |
| 1361 | |
| 6934 | 1362 static int binary_search(Array<Method*>* methods, Symbol* name) { |
| 0 | 1363 int len = methods->length(); |
| 1364 // methods are sorted, so do binary search | |
| 1365 int l = 0; | |
| 1366 int h = len - 1; | |
| 1367 while (l <= h) { | |
| 1368 int mid = (l + h) >> 1; | |
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1369 Method* m = methods->at(mid); |
| 0 | 1370 assert(m->is_method(), "must be method"); |
| 1371 int res = m->name()->fast_compare(name); | |
| 1372 if (res == 0) { | |
| 6934 | 1373 return mid; |
| 0 | 1374 } else if (res < 0) { |
| 1375 l = mid + 1; | |
| 1376 } else { | |
| 1377 h = mid - 1; | |
| 1378 } | |
| 1379 } | |
| 6934 | 1380 return -1; |
| 1381 } | |
| 1382 | |
|
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1383 // find_method looks up the name/signature in the local methods array |
| 6934 | 1384 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
| 1385 return InstanceKlass::find_method(methods(), name, signature); | |
| 1386 } | |
| 1387 | |
|
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1388 // find_instance_method looks up the name/signature in the local methods array |
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1389 // and skips over static methods |
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1390 Method* InstanceKlass::find_instance_method( |
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1391 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1392 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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|
1393 if (meth != NULL && meth->is_static()) { |
|
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|
1394 meth = NULL; |
|
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|
1395 } |
|
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|
1396 return meth; |
|
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|
1397 } |
|
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|
1398 |
|
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1399 // find_method looks up the name/signature in the local methods array |
| 6934 | 1400 Method* InstanceKlass::find_method( |
| 1401 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
|
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1402 int hit = find_method_index(methods, name, signature); |
|
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1403 return hit >= 0 ? methods->at(hit): NULL; |
|
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|
1404 } |
|
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|
1405 |
|
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|
1406 // Used directly for default_methods to find the index into the |
|
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|
1407 // default_vtable_indices, and indirectly by find_method |
|
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|
1408 // find_method_index looks in the local methods array to return the index |
|
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|
1409 // of the matching name/signature |
|
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|
1410 int InstanceKlass::find_method_index( |
|
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|
1411 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
| 6934 | 1412 int hit = binary_search(methods, name); |
| 1413 if (hit != -1) { | |
| 1414 Method* m = methods->at(hit); | |
| 1415 // Do linear search to find matching signature. First, quick check | |
| 1416 // for common case | |
|
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|
1417 if (m->signature() == signature) return hit; |
| 6934 | 1418 // search downwards through overloaded methods |
| 1419 int i; | |
| 1420 for (i = hit - 1; i >= 0; --i) { | |
| 1421 Method* m = methods->at(i); | |
| 1422 assert(m->is_method(), "must be method"); | |
| 1423 if (m->name() != name) break; | |
|
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|
1424 if (m->signature() == signature) return i; |
| 6934 | 1425 } |
| 1426 // search upwards | |
| 1427 for (i = hit + 1; i < methods->length(); ++i) { | |
| 1428 Method* m = methods->at(i); | |
| 1429 assert(m->is_method(), "must be method"); | |
| 1430 if (m->name() != name) break; | |
|
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|
1431 if (m->signature() == signature) return i; |
| 6934 | 1432 } |
| 1433 // not found | |
| 0 | 1434 #ifdef ASSERT |
| 6934 | 1435 int index = linear_search(methods, name, signature); |
| 1436 assert(index == -1, err_msg("binary search should have found entry %d", index)); | |
| 0 | 1437 #endif |
| 6934 | 1438 } |
|
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|
1439 return -1; |
| 0 | 1440 } |
| 6934 | 1441 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
| 1442 return find_method_by_name(methods(), name, end); | |
| 1443 } | |
| 1444 | |
| 1445 int InstanceKlass::find_method_by_name( | |
| 1446 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
| 1447 assert(end_ptr != NULL, "just checking"); | |
| 1448 int start = binary_search(methods, name); | |
| 1449 int end = start + 1; | |
| 1450 if (start != -1) { | |
| 1451 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
| 1452 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
| 1453 *end_ptr = end; | |
| 1454 return start; | |
| 1455 } | |
| 1456 return -1; | |
| 1457 } | |
| 1458 | |
|
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|
1459 // uncached_lookup_method searches both the local class methods array and all |
|
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|
1460 // superclasses methods arrays, skipping any overpass methods in superclasses. |
|
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1461 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const { |
|
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1462 Klass* klass = const_cast<InstanceKlass*>(this); |
|
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|
1463 bool dont_ignore_overpasses = true; // For the class being searched, find its overpasses. |
| 0 | 1464 while (klass != NULL) { |
|
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|
1465 Method* method = InstanceKlass::cast(klass)->find_method(name, signature); |
|
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|
1466 if ((method != NULL) && (dont_ignore_overpasses || !method->is_overpass())) { |
|
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|
1467 return method; |
|
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|
1468 } |
|
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|
1469 klass = InstanceKlass::cast(klass)->super(); |
|
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|
1470 dont_ignore_overpasses = false; // Ignore overpass methods in all superclasses. |
| 0 | 1471 } |
| 1472 return NULL; | |
| 1473 } | |
| 1474 | |
|
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|
1475 // lookup a method in the default methods list then in all transitive interfaces |
|
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|
1476 // Do NOT return private or static methods |
|
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|
1477 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
|
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|
1478 Symbol* signature) const { |
|
12828
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|
1479 Method* m = NULL; |
|
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|
1480 if (default_methods() != NULL) { |
|
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|
1481 m = find_method(default_methods(), name, signature); |
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|
1482 } |
|
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|
1483 // Look up interfaces |
|
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|
1484 if (m == NULL) { |
|
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|
1485 m = lookup_method_in_all_interfaces(name, signature, false); |
|
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|
1486 } |
|
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|
1487 return m; |
|
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|
1488 } |
|
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|
1489 |
| 0 | 1490 // lookup a method in all the interfaces that this class implements |
|
12318
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|
1491 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
|
36b97be47bde
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|
1492 // They should only be found in the initial InterfaceMethodRef |
|
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|
1493 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
|
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|
1494 Symbol* signature, |
|
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|
1495 bool skip_default_methods) const { |
|
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|
1496 Array<Klass*>* all_ifs = transitive_interfaces(); |
| 0 | 1497 int num_ifs = all_ifs->length(); |
|
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|
1498 InstanceKlass *ik = NULL; |
| 0 | 1499 for (int i = 0; i < num_ifs; i++) { |
|
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|
1500 ik = InstanceKlass::cast(all_ifs->at(i)); |
|
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|
1501 Method* m = ik->lookup_method(name, signature); |
|
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|
1502 if (m != NULL && m->is_public() && !m->is_static() && |
|
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|
1503 (!skip_default_methods || !m->is_default_method())) { |
| 0 | 1504 return m; |
| 1505 } | |
| 1506 } | |
| 1507 return NULL; | |
| 1508 } | |
| 1509 | |
| 1510 /* jni_id_for_impl for jfieldIds only */ | |
|
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|
1511 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
| 0 | 1512 MutexLocker ml(JfieldIdCreation_lock); |
| 1513 // Retry lookup after we got the lock | |
| 1514 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
| 1515 if (probe == NULL) { | |
| 1516 // Slow case, allocate new static field identifier | |
|
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|
1517 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
| 0 | 1518 this_oop->set_jni_ids(probe); |
| 1519 } | |
| 1520 return probe; | |
| 1521 } | |
| 1522 | |
| 1523 | |
| 1524 /* jni_id_for for jfieldIds only */ | |
|
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|
1525 JNIid* InstanceKlass::jni_id_for(int offset) { |
| 0 | 1526 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
| 1527 if (probe == NULL) { | |
|
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|
1528 probe = jni_id_for_impl(this, offset); |
| 0 | 1529 } |
| 1530 return probe; | |
| 1531 } | |
| 1532 | |
|
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|
1533 u2 InstanceKlass::enclosing_method_data(int offset) { |
|
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|
1534 Array<jushort>* inner_class_list = inner_classes(); |
|
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|
1535 if (inner_class_list == NULL) { |
|
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|
1536 return 0; |
|
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|
1537 } |
|
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|
1538 int length = inner_class_list->length(); |
|
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|
1539 if (length % inner_class_next_offset == 0) { |
|
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|
1540 return 0; |
|
f7c4174b33ba
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|
1541 } else { |
|
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|
1542 int index = length - enclosing_method_attribute_size; |
|
f7c4174b33ba
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|
1543 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
|
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|
1544 return inner_class_list->at(index + offset); |
|
5967
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|
1545 } |
|
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|
1546 } |
|
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|
1547 |
|
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|
1548 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
|
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|
1549 u2 method_index) { |
|
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|
1550 Array<jushort>* inner_class_list = inner_classes(); |
|
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|
1551 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
|
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|
1552 int length = inner_class_list->length(); |
|
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|
1553 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
|
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|
1554 int index = length - enclosing_method_attribute_size; |
|
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|
1555 inner_class_list->at_put( |
|
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|
1556 index + enclosing_method_class_index_offset, class_index); |
|
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|
1557 inner_class_list->at_put( |
|
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|
1558 index + enclosing_method_method_index_offset, method_index); |
|
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|
1559 } |
|
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|
1560 } |
| 0 | 1561 |
| 1562 // Lookup or create a jmethodID. | |
|
977
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6419370: 4/4 new jmethodID code has tiny holes in synchronization
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diff
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|
1563 // This code is called by the VMThread and JavaThreads so the |
|
74a5db69c1fe
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diff
changeset
|
1564 // locking has to be done very carefully to avoid deadlocks |
|
74a5db69c1fe
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diff
changeset
|
1565 // and/or other cache consistency problems. |
|
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diff
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|
1566 // |
|
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|
1567 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
| 0 | 1568 size_t idnum = (size_t)method_h->method_idnum(); |
| 1569 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
| 1570 size_t length = 0; | |
| 1571 jmethodID id = NULL; | |
|
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1572 |
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1573 // We use a double-check locking idiom here because this cache is |
|
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1574 // performance sensitive. In the normal system, this cache only |
|
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1575 // transitions from NULL to non-NULL which is safe because we use |
|
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1576 // release_set_methods_jmethod_ids() to advertise the new cache. |
|
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1577 // A partially constructed cache should never be seen by a racing |
|
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1578 // thread. We also use release_store_ptr() to save a new jmethodID |
|
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1579 // in the cache so a partially constructed jmethodID should never be |
|
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1580 // seen either. Cache reads of existing jmethodIDs proceed without a |
|
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1581 // lock, but cache writes of a new jmethodID requires uniqueness and |
|
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1582 // creation of the cache itself requires no leaks so a lock is |
|
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1583 // generally acquired in those two cases. |
|
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1584 // |
|
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1585 // If the RedefineClasses() API has been used, then this cache can |
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1586 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
|
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1587 // Cache creation requires no leaks and we require safety between all |
|
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1588 // cache accesses and freeing of the old cache so a lock is generally |
|
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1589 // acquired when the RedefineClasses() API has been used. |
| 0 | 1590 |
|
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1591 if (jmeths != NULL) { |
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1592 // the cache already exists |
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1593 if (!ik_h->idnum_can_increment()) { |
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1594 // the cache can't grow so we can just get the current values |
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1595 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
|
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1596 } else { |
|
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1597 // cache can grow so we have to be more careful |
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1598 if (Threads::number_of_threads() == 0 || |
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1599 SafepointSynchronize::is_at_safepoint()) { |
|
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1600 // we're single threaded or at a safepoint - no locking needed |
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1601 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1602 } else { |
|
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1603 MutexLocker ml(JmethodIdCreation_lock); |
|
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1604 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
|
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1605 } |
|
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1606 } |
|
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1607 } |
|
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|
1608 // implied else: |
|
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1609 // we need to allocate a cache so default length and id values are good |
| 0 | 1610 |
|
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1611 if (jmeths == NULL || // no cache yet |
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1612 length <= idnum || // cache is too short |
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1613 id == NULL) { // cache doesn't contain entry |
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1614 |
|
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1615 // This function can be called by the VMThread so we have to do all |
|
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1616 // things that might block on a safepoint before grabbing the lock. |
|
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1617 // Otherwise, we can deadlock with the VMThread or have a cache |
|
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1618 // consistency issue. These vars keep track of what we might have |
|
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1619 // to free after the lock is dropped. |
|
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1620 jmethodID to_dealloc_id = NULL; |
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1621 jmethodID* to_dealloc_jmeths = NULL; |
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1622 |
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1623 // may not allocate new_jmeths or use it if we allocate it |
| 0 | 1624 jmethodID* new_jmeths = NULL; |
| 1625 if (length <= idnum) { | |
|
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1626 // allocate a new cache that might be used |
| 0 | 1627 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
| 6197 | 1628 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
| 0 | 1629 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
|
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1630 // cache size is stored in element[0], other elements offset by one |
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1631 new_jmeths[0] = (jmethodID)size; |
| 0 | 1632 } |
| 1633 | |
|
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1634 // allocate a new jmethodID that might be used |
| 0 | 1635 jmethodID new_id = NULL; |
| 1636 if (method_h->is_old() && !method_h->is_obsolete()) { | |
| 1637 // The method passed in is old (but not obsolete), we need to use the current version | |
|
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1638 Method* current_method = ik_h->method_with_idnum((int)idnum); |
| 0 | 1639 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
|
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1640 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
| 0 | 1641 } else { |
| 1642 // It is the current version of the method or an obsolete method, | |
| 1643 // use the version passed in | |
|
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1644 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
| 0 | 1645 } |
| 1646 | |
|
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1647 if (Threads::number_of_threads() == 0 || |
|
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|
1648 SafepointSynchronize::is_at_safepoint()) { |
|
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1649 // we're single threaded or at a safepoint - no locking needed |
|
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|
1650 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
|
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1651 &to_dealloc_id, &to_dealloc_jmeths); |
|
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1652 } else { |
| 0 | 1653 MutexLocker ml(JmethodIdCreation_lock); |
|
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|
1654 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
|
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|
1655 &to_dealloc_id, &to_dealloc_jmeths); |
|
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|
1656 } |
|
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|
1657 |
|
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|
1658 // The lock has been dropped so we can free resources. |
|
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|
1659 // Free up either the old cache or the new cache if we allocated one. |
|
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1660 if (to_dealloc_jmeths != NULL) { |
|
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|
1661 FreeHeap(to_dealloc_jmeths); |
|
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|
1662 } |
|
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|
1663 // free up the new ID since it wasn't needed |
|
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|
1664 if (to_dealloc_id != NULL) { |
|
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1665 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
|
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|
1666 } |
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|
1667 } |
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|
1668 return id; |
|
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|
1669 } |
| 0 | 1670 |
|
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|
1671 |
|
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|
1672 // Common code to fetch the jmethodID from the cache or update the |
|
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|
1673 // cache with the new jmethodID. This function should never do anything |
|
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|
1674 // that causes the caller to go to a safepoint or we can deadlock with |
|
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|
1675 // the VMThread or have cache consistency issues. |
|
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|
1676 // |
|
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|
1677 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
|
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|
1678 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
|
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|
1679 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
|
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|
1680 jmethodID** to_dealloc_jmeths_p) { |
|
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|
1681 assert(new_id != NULL, "sanity check"); |
|
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|
1682 assert(to_dealloc_id_p != NULL, "sanity check"); |
|
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|
1683 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
|
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|
1684 assert(Threads::number_of_threads() == 0 || |
|
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|
1685 SafepointSynchronize::is_at_safepoint() || |
|
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|
1686 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
|
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|
1687 |
|
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|
1688 // reacquire the cache - we are locked, single threaded or at a safepoint |
|
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|
1689 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
|
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|
1690 jmethodID id = NULL; |
|
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|
1691 size_t length = 0; |
| 0 | 1692 |
|
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|
1693 if (jmeths == NULL || // no cache yet |
|
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|
1694 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
|
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|
1695 if (jmeths != NULL) { |
|
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|
1696 // copy any existing entries from the old cache |
|
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|
1697 for (size_t index = 0; index < length; index++) { |
|
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1698 new_jmeths[index+1] = jmeths[index+1]; |
| 0 | 1699 } |
|
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1700 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
| 0 | 1701 } |
|
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1702 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1703 } else { |
|
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1704 // fetch jmethodID (if any) from the existing cache |
|
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1705 id = jmeths[idnum+1]; |
|
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1706 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
|
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1707 } |
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1708 if (id == NULL) { |
|
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1709 // No matching jmethodID in the existing cache or we have a new |
|
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1710 // cache or we just grew the cache. This cache write is done here |
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1711 // by the first thread to win the foot race because a jmethodID |
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1712 // needs to be unique once it is generally available. |
|
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1713 id = new_id; |
|
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1714 |
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1715 // The jmethodID cache can be read while unlocked so we have to |
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1716 // make sure the new jmethodID is complete before installing it |
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1717 // in the cache. |
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1718 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
|
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1719 } else { |
|
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1720 *to_dealloc_id_p = new_id; // save new id for later delete |
| 0 | 1721 } |
| 1722 return id; | |
| 1723 } | |
| 1724 | |
| 1725 | |
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1726 // Common code to get the jmethodID cache length and the jmethodID |
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1727 // value at index idnum if there is one. |
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1728 // |
|
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1729 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
|
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1730 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1731 assert(cache != NULL, "sanity check"); |
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1732 assert(length_p != NULL, "sanity check"); |
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1733 assert(id_p != NULL, "sanity check"); |
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1734 |
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1735 // cache size is stored in element[0], other elements offset by one |
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1736 *length_p = (size_t)cache[0]; |
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1737 if (*length_p <= idnum) { // cache is too short |
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1738 *id_p = NULL; |
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1739 } else { |
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1740 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1741 } |
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1742 } |
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1743 |
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1744 |
| 0 | 1745 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1746 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
| 0 | 1747 size_t idnum = (size_t)method->method_idnum(); |
| 1748 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
| 1749 size_t length; // length assigned as debugging crumb | |
| 1750 jmethodID id = NULL; | |
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1751 if (jmeths != NULL && // If there is a cache |
| 0 | 1752 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
| 1753 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
| 1754 } | |
| 1755 return id; | |
| 1756 } | |
| 1757 | |
| 1758 | |
| 1759 // | |
| 1760 // Walk the list of dependent nmethods searching for nmethods which | |
|
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1761 // are dependent on the changes that were passed in and mark them for |
| 0 | 1762 // deoptimization. Returns the number of nmethods found. |
| 1763 // | |
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1764 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
| 0 | 1765 assert_locked_or_safepoint(CodeCache_lock); |
| 1766 int found = 0; | |
| 1767 nmethodBucket* b = _dependencies; | |
| 1768 while (b != NULL) { | |
| 1769 nmethod* nm = b->get_nmethod(); | |
| 1770 // since dependencies aren't removed until an nmethod becomes a zombie, | |
| 1771 // the dependency list may contain nmethods which aren't alive. | |
| 1772 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
| 1773 if (TraceDependencies) { | |
| 1774 ResourceMark rm; | |
| 1775 tty->print_cr("Marked for deoptimization"); | |
| 1776 tty->print_cr(" context = %s", this->external_name()); | |
| 1777 changes.print(); | |
| 1778 nm->print(); | |
| 1779 nm->print_dependencies(); | |
| 1780 } | |
| 1781 nm->mark_for_deoptimization(); | |
| 1782 found++; | |
| 1783 } | |
| 1784 b = b->next(); | |
| 1785 } | |
| 1786 return found; | |
| 1787 } | |
| 1788 | |
| 1789 | |
| 1790 // | |
| 1791 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
| 1792 // It's possible that an nmethod has multiple dependencies on this klass | |
| 1793 // so a count is kept for each bucket to guarantee that creation and | |
| 1794 // deletion of dependencies is consistent. | |
| 1795 // | |
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1796 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
| 0 | 1797 assert_locked_or_safepoint(CodeCache_lock); |
| 1798 nmethodBucket* b = _dependencies; | |
| 1799 nmethodBucket* last = NULL; | |
| 1800 while (b != NULL) { | |
| 1801 if (nm == b->get_nmethod()) { | |
| 1802 b->increment(); | |
| 1803 return; | |
| 1804 } | |
| 1805 b = b->next(); | |
| 1806 } | |
| 1807 _dependencies = new nmethodBucket(nm, _dependencies); | |
| 1808 } | |
| 1809 | |
| 1810 | |
| 1811 // | |
| 1812 // Decrement count of the nmethod in the dependency list and remove | |
| 1813 // the bucket competely when the count goes to 0. This method must | |
| 1814 // find a corresponding bucket otherwise there's a bug in the | |
| 1815 // recording of dependecies. | |
| 1816 // | |
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1817 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
| 0 | 1818 assert_locked_or_safepoint(CodeCache_lock); |
| 1819 nmethodBucket* b = _dependencies; | |
| 1820 nmethodBucket* last = NULL; | |
| 1821 while (b != NULL) { | |
| 1822 if (nm == b->get_nmethod()) { | |
| 1823 if (b->decrement() == 0) { | |
| 1824 if (last == NULL) { | |
| 1825 _dependencies = b->next(); | |
| 1826 } else { | |
| 1827 last->set_next(b->next()); | |
| 1828 } | |
| 1829 delete b; | |
| 1830 } | |
| 1831 return; | |
| 1832 } | |
| 1833 last = b; | |
| 1834 b = b->next(); | |
| 1835 } | |
| 1836 #ifdef ASSERT | |
| 1837 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
| 1838 nm->print(); | |
| 1839 #endif // ASSERT | |
| 1840 ShouldNotReachHere(); | |
| 1841 } | |
| 1842 | |
| 1843 | |
| 1844 #ifndef PRODUCT | |
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1845 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
| 0 | 1846 nmethodBucket* b = _dependencies; |
| 1847 int idx = 0; | |
| 1848 while (b != NULL) { | |
| 1849 nmethod* nm = b->get_nmethod(); | |
| 1850 tty->print("[%d] count=%d { ", idx++, b->count()); | |
| 1851 if (!verbose) { | |
| 1852 nm->print_on(tty, "nmethod"); | |
| 1853 tty->print_cr(" } "); | |
| 1854 } else { | |
| 1855 nm->print(); | |
| 1856 nm->print_dependencies(); | |
| 1857 tty->print_cr("--- } "); | |
| 1858 } | |
| 1859 b = b->next(); | |
| 1860 } | |
| 1861 } | |
| 1862 | |
| 1863 | |
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1864 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
| 0 | 1865 nmethodBucket* b = _dependencies; |
| 1866 while (b != NULL) { | |
| 1867 if (nm == b->get_nmethod()) { | |
| 1868 return true; | |
| 1869 } | |
| 1870 b = b->next(); | |
| 1871 } | |
| 1872 return false; | |
| 1873 } | |
| 1874 #endif //PRODUCT | |
| 1875 | |
| 1876 | |
|
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1877 // Garbage collection |
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1878 |
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1879 #ifdef ASSERT |
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1880 template <class T> void assert_is_in(T *p) { |
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1881 T heap_oop = oopDesc::load_heap_oop(p); |
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1882 if (!oopDesc::is_null(heap_oop)) { |
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1883 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1884 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1885 } |
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1886 } |
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1887 template <class T> void assert_is_in_closed_subset(T *p) { |
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1888 T heap_oop = oopDesc::load_heap_oop(p); |
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1889 if (!oopDesc::is_null(heap_oop)) { |
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1890 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1891 assert(Universe::heap()->is_in_closed_subset(o), |
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1892 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
|
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1893 } |
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1894 } |
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1895 template <class T> void assert_is_in_reserved(T *p) { |
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1896 T heap_oop = oopDesc::load_heap_oop(p); |
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1897 if (!oopDesc::is_null(heap_oop)) { |
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1898 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1899 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1900 } |
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1901 } |
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1902 template <class T> void assert_nothing(T *p) {} |
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1903 |
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1904 #else |
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1905 template <class T> void assert_is_in(T *p) {} |
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1906 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1907 template <class T> void assert_is_in_reserved(T *p) {} |
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1908 template <class T> void assert_nothing(T *p) {} |
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1909 #endif // ASSERT |
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1910 |
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1911 // |
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1912 // Macros that iterate over areas of oops which are specialized on type of |
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1913 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1914 // |
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1915 // Parameters are: |
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1916 // T - type of oop to point to (either oop or narrowOop) |
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1917 // start_p - starting pointer for region to iterate over |
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1918 // count - number of oops or narrowOops to iterate over |
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1919 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1920 // makes it more efficient to put in a macro rather than making |
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1921 // it a template function) |
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1922 // assert_fn - assert function which is template function because performance |
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1923 // doesn't matter when enabled. |
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1924 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1925 T, start_p, count, do_oop, \ |
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1926 assert_fn) \ |
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1927 { \ |
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1928 T* p = (T*)(start_p); \ |
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1929 T* const end = p + (count); \ |
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1930 while (p < end) { \ |
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1931 (assert_fn)(p); \ |
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1932 do_oop; \ |
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1933 ++p; \ |
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1934 } \ |
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1935 } |
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1936 |
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1937 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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1938 T, start_p, count, do_oop, \ |
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1939 assert_fn) \ |
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1940 { \ |
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1941 T* const start = (T*)(start_p); \ |
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1942 T* p = start + (count); \ |
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1943 while (start < p) { \ |
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1944 --p; \ |
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1945 (assert_fn)(p); \ |
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1946 do_oop; \ |
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1947 } \ |
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1948 } |
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1949 |
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1950 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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1951 T, start_p, count, low, high, \ |
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1952 do_oop, assert_fn) \ |
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1953 { \ |
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1954 T* const l = (T*)(low); \ |
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1955 T* const h = (T*)(high); \ |
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1956 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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1957 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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1958 "bounded region must be properly aligned"); \ |
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1959 T* p = (T*)(start_p); \ |
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1960 T* end = p + (count); \ |
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1961 if (p < l) p = l; \ |
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1962 if (end > h) end = h; \ |
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1963 while (p < end) { \ |
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1964 (assert_fn)(p); \ |
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1965 do_oop; \ |
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1966 ++p; \ |
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1967 } \ |
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1968 } |
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1969 |
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1970 |
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1971 // The following macros call specialized macros, passing either oop or |
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1972 // narrowOop as the specialization type. These test the UseCompressedOops |
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1973 // flag. |
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1974 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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1975 { \ |
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1976 /* Compute oopmap block range. The common case \ |
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1977 is nonstatic_oop_map_size == 1. */ \ |
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1978 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
| 938 | 1979 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
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1980 if (UseCompressedOops) { \ |
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1981 while (map < end_map) { \ |
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1982 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
| 938 | 1983 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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1984 do_oop, assert_fn) \ |
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1985 ++map; \ |
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1986 } \ |
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1987 } else { \ |
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1988 while (map < end_map) { \ |
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1989 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
| 938 | 1990 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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1991 do_oop, assert_fn) \ |
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1992 ++map; \ |
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1993 } \ |
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1994 } \ |
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1995 } |
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1996 |
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1997 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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1998 { \ |
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1999 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
| 938 | 2000 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
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2001 if (UseCompressedOops) { \ |
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2002 while (start_map < map) { \ |
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2003 --map; \ |
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2004 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
| 938 | 2005 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2006 do_oop, assert_fn) \ |
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2007 } \ |
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2008 } else { \ |
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2009 while (start_map < map) { \ |
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2010 --map; \ |
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2011 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
| 938 | 2012 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2013 do_oop, assert_fn) \ |
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2014 } \ |
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2015 } \ |
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2016 } |
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2017 |
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2018 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2019 assert_fn) \ |
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2020 { \ |
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2021 /* Compute oopmap block range. The common case is \ |
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2022 nonstatic_oop_map_size == 1, so we accept the \ |
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2023 usually non-existent extra overhead of examining \ |
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2024 all the maps. */ \ |
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2025 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
| 938 | 2026 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
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2027 if (UseCompressedOops) { \ |
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2028 while (map < end_map) { \ |
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2029 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
| 938 | 2030 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
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2031 low, high, \ |
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2032 do_oop, assert_fn) \ |
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2033 ++map; \ |
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2034 } \ |
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2035 } else { \ |
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2036 while (map < end_map) { \ |
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2037 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
| 938 | 2038 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
|
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2039 low, high, \ |
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2040 do_oop, assert_fn) \ |
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2041 ++map; \ |
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2042 } \ |
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2043 } \ |
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2044 } |
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2045 |
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2046 void InstanceKlass::oop_follow_contents(oop obj) { |
|
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2047 assert(obj != NULL, "can't follow the content of NULL object"); |
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2048 MarkSweep::follow_klass(obj->klass()); |
|
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2049 InstanceKlass_OOP_MAP_ITERATE( \ |
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2050 obj, \ |
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2051 MarkSweep::mark_and_push(p), \ |
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2052 assert_is_in_closed_subset) |
| 0 | 2053 } |
| 2054 | |
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2055 #if INCLUDE_ALL_GCS |
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2056 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
| 0 | 2057 oop obj) { |
|
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2058 assert(obj != NULL, "can't follow the content of NULL object"); |
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2059 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2060 // Only mark the header and let the scan of the meta-data mark |
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2061 // everything else. |
|
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2062 InstanceKlass_OOP_MAP_ITERATE( \ |
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2063 obj, \ |
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2064 PSParallelCompact::mark_and_push(cm, p), \ |
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2065 assert_is_in) |
| 0 | 2066 } |
|
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2067 #endif // INCLUDE_ALL_GCS |
| 0 | 2068 |
|
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2069 // closure's do_metadata() method dictates whether the given closure should be |
| 0 | 2070 // applied to the klass ptr in the object header. |
| 2071 | |
|
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2072 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2073 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2074 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2075 "Inconsistency in do_metadata"); \ |
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2076 if (closure->do_metadata##nv_suffix()) |
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2077 |
|
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2078 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2079 \ |
|
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2080 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
|
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2081 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2082 /* header */ \ |
|
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2083 if_do_metadata_checked(closure, nv_suffix) { \ |
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2084 closure->do_klass##nv_suffix(obj->klass()); \ |
|
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2085 } \ |
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2086 InstanceKlass_OOP_MAP_ITERATE( \ |
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2087 obj, \ |
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2088 SpecializationStats:: \ |
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2089 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2090 (closure)->do_oop##nv_suffix(p), \ |
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2091 assert_is_in_closed_subset) \ |
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2092 return size_helper(); \ |
| 0 | 2093 } |
| 2094 | |
|
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2095 #if INCLUDE_ALL_GCS |
|
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2096 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2097 \ |
|
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2098 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
|
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2099 OopClosureType* closure) { \ |
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2100 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2101 /* header */ \ |
|
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2102 if_do_metadata_checked(closure, nv_suffix) { \ |
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2103 closure->do_klass##nv_suffix(obj->klass()); \ |
|
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2104 } \ |
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2105 /* instance variables */ \ |
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|
2106 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2107 obj, \ |
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2108 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2109 (closure)->do_oop##nv_suffix(p), \ |
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2110 assert_is_in_closed_subset) \ |
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2111 return size_helper(); \ |
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2112 } |
|
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2113 #endif // INCLUDE_ALL_GCS |
|
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2114 |
|
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2115 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2116 \ |
|
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2117 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
|
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2118 OopClosureType* closure, \ |
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2119 MemRegion mr) { \ |
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2120 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
|
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2121 if_do_metadata_checked(closure, nv_suffix) { \ |
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2122 if (mr.contains(obj)) { \ |
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2123 closure->do_klass##nv_suffix(obj->klass()); \ |
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2124 } \ |
|
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2125 } \ |
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2126 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2127 obj, mr.start(), mr.end(), \ |
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2128 (closure)->do_oop##nv_suffix(p), \ |
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2129 assert_is_in_closed_subset) \ |
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2130 return size_helper(); \ |
| 0 | 2131 } |
| 2132 | |
| 2133 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
|
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2134 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
| 0 | 2135 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
|
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2136 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2137 #if INCLUDE_ALL_GCS |
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2138 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2139 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2140 #endif // INCLUDE_ALL_GCS |
| 0 | 2141 |
|
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2142 int InstanceKlass::oop_adjust_pointers(oop obj) { |
| 0 | 2143 int size = size_helper(); |
|
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2144 InstanceKlass_OOP_MAP_ITERATE( \ |
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2145 obj, \ |
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2146 MarkSweep::adjust_pointer(p), \ |
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2147 assert_is_in) |
| 0 | 2148 return size; |
| 2149 } | |
| 2150 | |
|
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2151 #if INCLUDE_ALL_GCS |
|
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2152 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
|
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2153 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2154 obj, \ |
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2155 if (PSScavenge::should_scavenge(p)) { \ |
|
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2156 pm->claim_or_forward_depth(p); \ |
|
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2157 }, \ |
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|
2158 assert_nothing ) |
| 0 | 2159 } |
| 2160 | |
|
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2161 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
|
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2162 int size = size_helper(); |
|
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2163 InstanceKlass_OOP_MAP_ITERATE( \ |
|
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2164 obj, \ |
|
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2165 PSParallelCompact::adjust_pointer(p), \ |
|
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2166 assert_is_in) |
|
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2167 return size; |
| 0 | 2168 } |
| 2169 | |
|
8001
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|
2170 #endif // INCLUDE_ALL_GCS |
| 0 | 2171 |
|
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2172 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
|
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2173 assert(is_loader_alive(is_alive), "this klass should be live"); |
|
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2174 if (is_interface()) { |
|
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2175 if (ClassUnloading) { |
|
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2176 Klass* impl = implementor(); |
|
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|
2177 if (impl != NULL) { |
|
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2178 if (!impl->is_loader_alive(is_alive)) { |
|
5998
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|
2179 // remove this guy |
|
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|
2180 Klass** klass = adr_implementor(); |
|
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2181 assert(klass != NULL, "null klass"); |
|
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|
2182 if (klass != NULL) { |
|
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2183 *klass = NULL; |
|
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|
2184 } |
|
5998
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2185 } |
| 0 | 2186 } |
|
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2187 } |
|
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2188 } |
|
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2189 } |
|
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2190 |
|
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2191 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
|
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2192 for (int m = 0; m < methods()->length(); m++) { |
|
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2193 MethodData* mdo = methods()->at(m)->method_data(); |
|
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|
2194 if (mdo != NULL) { |
|
14500
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|
2195 mdo->clean_method_data(is_alive); |
| 0 | 2196 } |
| 2197 } | |
|
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2198 } |
|
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|
2199 |
|
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2200 |
|
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|
2201 static void remove_unshareable_in_class(Klass* k) { |
|
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2202 // remove klass's unshareable info |
|
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2203 k->remove_unshareable_info(); |
|
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2204 } |
|
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2205 |
|
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2206 void InstanceKlass::remove_unshareable_info() { |
|
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2207 Klass::remove_unshareable_info(); |
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2208 // Unlink the class |
|
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|
2209 if (is_linked()) { |
|
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|
2210 unlink_class(); |
|
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|
2211 } |
|
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|
2212 init_implementor(); |
|
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2213 |
|
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|
2214 constants()->remove_unshareable_info(); |
|
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2215 |
|
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2216 for (int i = 0; i < methods()->length(); i++) { |
|
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2217 Method* m = methods()->at(i); |
|
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2218 m->remove_unshareable_info(); |
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2219 } |
|
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2220 |
|
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2221 // do array classes also. |
|
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2222 array_klasses_do(remove_unshareable_in_class); |
| 0 | 2223 } |
| 2224 | |
|
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2225 void restore_unshareable_in_class(Klass* k, TRAPS) { |
|
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|
2226 k->restore_unshareable_info(CHECK); |
| 0 | 2227 } |
| 2228 | |
|
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2229 void InstanceKlass::restore_unshareable_info(TRAPS) { |
|
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|
2230 Klass::restore_unshareable_info(CHECK); |
|
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2231 instanceKlassHandle ik(THREAD, this); |
|
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2232 |
|
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2233 Array<Method*>* methods = ik->methods(); |
|
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2234 int num_methods = methods->length(); |
|
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2235 for (int index2 = 0; index2 < num_methods; ++index2) { |
|
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|
2236 methodHandle m(THREAD, methods->at(index2)); |
|
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|
2237 m()->link_method(m, CHECK); |
|
6733
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|
2238 // restore method's vtable by calling a virtual function |
|
fa6e618671d7
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|
2239 m->restore_vtable(); |
|
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|
2240 } |
|
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|
2241 if (JvmtiExport::has_redefined_a_class()) { |
|
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2242 // Reinitialize vtable because RedefineClasses may have changed some |
|
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2243 // entries in this vtable for super classes so the CDS vtable might |
|
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|
2244 // point to old or obsolete entries. RedefineClasses doesn't fix up |
|
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2245 // vtables in the shared system dictionary, only the main one. |
|
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2246 // It also redefines the itable too so fix that too. |
|
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|
2247 ResourceMark rm(THREAD); |
|
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|
2248 ik->vtable()->initialize_vtable(false, CHECK); |
|
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|
2249 ik->itable()->initialize_itable(false, CHECK); |
|
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|
2250 } |
|
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|
2251 |
|
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|
2252 // restore constant pool resolved references |
|
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|
2253 ik->constants()->restore_unshareable_info(CHECK); |
|
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2254 |
|
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|
2255 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
|
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|
2256 } |
|
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|
2257 |
|
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|
2258 static void clear_all_breakpoints(Method* m) { |
| 0 | 2259 m->clear_all_breakpoints(); |
| 2260 } | |
| 2261 | |
|
10149
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|
2262 |
|
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|
2263 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
|
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|
2264 // notify the debugger |
|
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|
2265 if (JvmtiExport::should_post_class_unload()) { |
|
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|
2266 JvmtiExport::post_class_unload(ik); |
|
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|
2267 } |
|
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|
2268 |
|
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|
2269 // notify ClassLoadingService of class unload |
|
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|
2270 ClassLoadingService::notify_class_unloaded(ik); |
|
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|
2271 } |
|
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|
2272 |
|
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|
2273 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
|
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|
2274 // Clean up C heap |
|
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|
2275 ik->release_C_heap_structures(); |
|
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|
2276 ik->constants()->release_C_heap_structures(); |
|
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|
2277 } |
|
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|
2278 |
|
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|
2279 void InstanceKlass::release_C_heap_structures() { |
|
10149
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|
2280 |
|
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|
2281 // Can't release the constant pool here because the constant pool can be |
|
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|
2282 // deallocated separately from the InstanceKlass for default methods and |
|
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|
2283 // redefine classes. |
|
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|
2284 |
| 0 | 2285 // Deallocate oop map cache |
| 2286 if (_oop_map_cache != NULL) { | |
| 2287 delete _oop_map_cache; | |
| 2288 _oop_map_cache = NULL; | |
| 2289 } | |
| 2290 | |
| 2291 // Deallocate JNI identifiers for jfieldIDs | |
| 2292 JNIid::deallocate(jni_ids()); | |
| 2293 set_jni_ids(NULL); | |
| 2294 | |
| 2295 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
| 2296 if (jmeths != (jmethodID*)NULL) { | |
| 2297 release_set_methods_jmethod_ids(NULL); | |
| 2298 FreeHeap(jmeths); | |
| 2299 } | |
| 2300 | |
|
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2301 // Deallocate MemberNameTable |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2302 { |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2303 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
|
2304 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
|
2305 MemberNameTable* mnt = member_names(); |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2306 if (mnt != NULL) { |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2307 delete mnt; |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2308 set_member_names(NULL); |
|
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2309 } |
|
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2310 } |
|
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2311 |
| 0 | 2312 // release dependencies |
| 2313 nmethodBucket* b = _dependencies; | |
| 2314 _dependencies = NULL; | |
| 2315 while (b != NULL) { | |
| 2316 nmethodBucket* next = b->next(); | |
| 2317 delete b; | |
| 2318 b = next; | |
| 2319 } | |
| 2320 | |
| 2321 // Deallocate breakpoint records | |
| 2322 if (breakpoints() != 0x0) { | |
| 2323 methods_do(clear_all_breakpoints); | |
| 2324 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
| 2325 } | |
| 2326 | |
| 2327 // deallocate information about previous versions | |
| 2328 if (_previous_versions != NULL) { | |
| 2329 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
| 2330 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
| 2331 delete pv_node; | |
| 2332 } | |
| 2333 delete _previous_versions; | |
| 2334 _previous_versions = NULL; | |
| 2335 } | |
| 2336 | |
| 2337 // deallocate the cached class file | |
|
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2338 if (_cached_class_file != NULL) { |
|
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2339 os::free(_cached_class_file, mtClass); |
|
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2340 _cached_class_file = NULL; |
| 0 | 2341 } |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2342 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2343 // 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
|
2344 if (_name != NULL) _name->decrement_refcount(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2345 // 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
|
2346 // class can't be referenced anymore). |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2347 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
|
2348 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
|
2349 |
|
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2350 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
|
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2351 Atomic::dec(&_total_instanceKlass_count); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2352 } |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2353 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2354 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
|
2355 if (array == NULL) { |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2356 _source_debug_extension = NULL; |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2357 } else { |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2358 // 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
|
2359 // character could cause an overflow because the attribute length is |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2360 // 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
|
2361 // unlikely to happen. |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2362 assert((length+1) > length, "Overflow checking"); |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2363 char* sde = NEW_C_HEAP_ARRAY(char, (length + 1), mtClass); |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2364 for (int i = 0; i < length; i++) { |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2365 sde[i] = array[i]; |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2366 } |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2367 sde[length] = '\0'; |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2368 _source_debug_extension = sde; |
|
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2369 } |
| 0 | 2370 } |
| 2371 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2372 address InstanceKlass::static_field_addr(int offset) { |
|
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2373 return (address)(offset + InstanceMirrorKlass::offset_of_static_fields() + cast_from_oop<intptr_t>(java_mirror())); |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2374 } |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2375 |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2376 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2377 const char* InstanceKlass::signature_name() const { |
|
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2378 int hash_len = 0; |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2379 char hash_buf[40]; |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2380 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2381 // If this is an anonymous class, append a hash to make the name unique |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2382 if (is_anonymous()) { |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2383 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2384 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2385 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2386 hash_len = (int)strlen(hash_buf); |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2387 } |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2388 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2389 // Get the internal name as a c string |
| 0 | 2390 const char* src = (const char*) (name()->as_C_string()); |
| 2391 const int src_length = (int)strlen(src); | |
|
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2392 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2393 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
|
2394 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2395 // Add L as type indicator |
| 0 | 2396 int dest_index = 0; |
| 2397 dest[dest_index++] = 'L'; | |
|
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2398 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2399 // Add the actual class name |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2400 for (int src_index = 0; src_index < src_length; ) { |
| 0 | 2401 dest[dest_index++] = src[src_index++]; |
| 2402 } | |
|
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2403 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2404 // If we have a hash, append it |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2405 for (int hash_index = 0; hash_index < hash_len; ) { |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2406 dest[dest_index++] = hash_buf[hash_index++]; |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2407 } |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2408 |
|
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2409 // Add the semicolon and the NULL |
| 0 | 2410 dest[dest_index++] = ';'; |
| 2411 dest[dest_index] = '\0'; | |
| 2412 return dest; | |
| 2413 } | |
| 2414 | |
| 2415 // different verisons of is_same_class_package | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2416 bool InstanceKlass::is_same_class_package(Klass* class2) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2417 Klass* class1 = this; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2418 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
| 6983 | 2419 Symbol* classname1 = class1->name(); |
| 2420 | |
| 2421 if (class2->oop_is_objArray()) { | |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2422 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
| 0 | 2423 } |
| 2424 oop classloader2; | |
| 6983 | 2425 if (class2->oop_is_instance()) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2426 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
| 0 | 2427 } else { |
| 6983 | 2428 assert(class2->oop_is_typeArray(), "should be type array"); |
| 0 | 2429 classloader2 = NULL; |
| 2430 } | |
| 6983 | 2431 Symbol* classname2 = class2->name(); |
| 0 | 2432 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2433 return InstanceKlass::is_same_class_package(classloader1, classname1, |
| 0 | 2434 classloader2, classname2); |
| 2435 } | |
| 2436 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2437 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
|
2438 Klass* class1 = this; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2439 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
| 6983 | 2440 Symbol* classname1 = class1->name(); |
| 0 | 2441 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2442 return InstanceKlass::is_same_class_package(classloader1, classname1, |
| 0 | 2443 classloader2, classname2); |
| 2444 } | |
| 2445 | |
| 2446 // return true if two classes are in the same package, classloader | |
| 2447 // 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
|
2448 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
|
2449 oop class_loader2, Symbol* class_name2) { |
| 0 | 2450 if (class_loader1 != class_loader2) { |
| 2451 return false; | |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2452 } else if (class_name1 == class_name2) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2453 return true; // skip painful bytewise comparison |
| 0 | 2454 } else { |
| 2455 ResourceMark rm; | |
| 2456 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2457 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
| 0 | 2458 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
| 2459 // 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
|
2460 const jbyte *name1 = class_name1->base(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2461 const jbyte *name2 = class_name2->base(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2462 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2463 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
|
2464 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
| 0 | 2465 |
| 2466 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
| 2467 // One of the two doesn't have a package. Only return true | |
| 2468 // if the other one also doesn't have a package. | |
| 2469 return last_slash1 == last_slash2; | |
| 2470 } else { | |
| 2471 // Skip over '['s | |
| 2472 if (*name1 == '[') { | |
| 2473 do { | |
| 2474 name1++; | |
| 2475 } while (*name1 == '['); | |
| 2476 if (*name1 != 'L') { | |
| 2477 // Something is terribly wrong. Shouldn't be here. | |
| 2478 return false; | |
| 2479 } | |
| 2480 } | |
| 2481 if (*name2 == '[') { | |
| 2482 do { | |
| 2483 name2++; | |
| 2484 } while (*name2 == '['); | |
| 2485 if (*name2 != 'L') { | |
| 2486 // Something is terribly wrong. Shouldn't be here. | |
| 2487 return false; | |
| 2488 } | |
| 2489 } | |
| 2490 | |
| 2491 // Check that package part is identical | |
| 2492 int length1 = last_slash1 - name1; | |
| 2493 int length2 = last_slash2 - name2; | |
| 2494 | |
| 2495 return UTF8::equal(name1, length1, name2, length2); | |
| 2496 } | |
| 2497 } | |
| 2498 } | |
| 2499 | |
|
652
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|
2500 // Returns true iff super_method can be overridden by a method in targetclassname |
|
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|
2501 // See JSL 3rd edition 8.4.6.1 |
|
4aaa9f5e02a8
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|
2502 // Assumes name-signature match |
|
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|
2503 // "this" is InstanceKlass of super_method which must exist |
|
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|
2504 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
|
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|
2505 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
|
652
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|
2506 // Private methods can not be overridden |
|
4aaa9f5e02a8
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|
2507 if (super_method->is_private()) { |
|
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|
2508 return false; |
|
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diff
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|
2509 } |
|
4aaa9f5e02a8
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|
2510 // If super method is accessible, then override |
|
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|
2511 if ((super_method->is_protected()) || |
|
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|
2512 (super_method->is_public())) { |
|
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|
2513 return true; |
|
4aaa9f5e02a8
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diff
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|
2514 } |
|
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|
2515 // Package-private methods are not inherited outside of package |
|
4aaa9f5e02a8
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|
2516 assert(super_method->is_package_private(), "must be package private"); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2517 return(is_same_class_package(targetclassloader(), targetclassname)); |
|
652
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|
2518 } |
| 0 | 2519 |
|
665
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|
2520 /* defined for now in jvm.cpp, for historical reasons *-- |
|
6725
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|
2521 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
2522 Symbol*& simple_name_result, TRAPS) { |
|
665
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|
2523 ... |
|
c89f86385056
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|
2524 } |
|
c89f86385056
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|
2525 */ |
|
c89f86385056
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jrose
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|
2526 |
|
c89f86385056
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diff
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|
2527 // tell if two classes have the same enclosing class (at package level) |
|
6725
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|
2528 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
|
da91efe96a93
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|
2529 Klass* class2_oop, TRAPS) { |
|
da91efe96a93
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|
2530 if (class2_oop == class1()) return true; |
| 6983 | 2531 if (!class2_oop->oop_is_instance()) return false; |
|
665
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6814659: separable cleanups and subroutines for 6655638
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|
2532 instanceKlassHandle class2(THREAD, class2_oop); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2533 |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2534 // must be in same package before we try anything else |
|
c89f86385056
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diff
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|
2535 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2536 return false; |
|
c89f86385056
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diff
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|
2537 |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2538 // As long as there is an outer1.getEnclosingClass, |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2539 // shift the search outward. |
|
c89f86385056
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jrose
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diff
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|
2540 instanceKlassHandle outer1 = class1; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2541 for (;;) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2542 // As we walk along, look for equalities between outer1 and class2. |
|
c89f86385056
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diff
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|
2543 // Eventually, the walks will terminate as outer1 stops |
|
c89f86385056
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diff
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|
2544 // at the top-level class around the original class. |
|
1126
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xlu
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1039
diff
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|
2545 bool ignore_inner_is_member; |
|
6725
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|
2546 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
|
1126
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diff
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|
2547 CHECK_false); |
|
665
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2548 if (next == NULL) break; |
|
c89f86385056
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jrose
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diff
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|
2549 if (next == class2()) return true; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2550 outer1 = instanceKlassHandle(THREAD, next); |
|
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2551 } |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2552 |
|
c89f86385056
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diff
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|
2553 // Now do the same for class2. |
|
c89f86385056
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jrose
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diff
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|
2554 instanceKlassHandle outer2 = class2; |
|
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|
2555 for (;;) { |
|
1126
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xlu
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diff
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|
2556 bool ignore_inner_is_member; |
|
6725
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|
2557 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
|
1126
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diff
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|
2558 CHECK_false); |
|
665
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605
diff
changeset
|
2559 if (next == NULL) break; |
|
c89f86385056
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jrose
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605
diff
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|
2560 // Might as well check the new outer against all available values. |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2561 if (next == class1()) return true; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2562 if (next == outer1()) return true; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2563 outer2 = instanceKlassHandle(THREAD, next); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2564 } |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2565 |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2566 // If by this point we have not found an equality between the |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2567 // two classes, we know they are in separate package members. |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2568 return false; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2569 } |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2570 |
| 0 | 2571 |
|
6725
da91efe96a93
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|
2572 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
| 0 | 2573 jint access = access_flags().as_int(); |
| 2574 | |
| 2575 // But check if it happens to be member class. | |
|
6725
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|
2576 instanceKlassHandle ik(THREAD, this); |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2577 InnerClassesIterator iter(ik); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2578 for (; !iter.done(); iter.next()) { |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2579 int ioff = iter.inner_class_info_index(); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2580 // Inner class attribute can be zero, skip it. |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2581 // Strange but true: JVM spec. allows null inner class refs. |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2582 if (ioff == 0) continue; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
changeset
|
2583 |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2584 // 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
|
2585 // since we are looking for the flags for our self. |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2586 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
changeset
|
2587 if ((ik->name() == inner_name)) { |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2588 // 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
|
2589 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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|
2590 break; |
| 0 | 2591 } |
| 2592 } | |
| 2593 // Remember to strip ACC_SUPER bit | |
| 2594 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
| 2595 } | |
| 2596 | |
|
6725
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|
2597 jint InstanceKlass::jvmti_class_status() const { |
| 0 | 2598 jint result = 0; |
| 2599 | |
| 2600 if (is_linked()) { | |
| 2601 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
| 2602 } | |
| 2603 | |
| 2604 if (is_initialized()) { | |
| 2605 assert(is_linked(), "Class status is not consistent"); | |
| 2606 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
| 2607 } | |
| 2608 if (is_in_error_state()) { | |
| 2609 result |= JVMTI_CLASS_STATUS_ERROR; | |
| 2610 } | |
| 2611 return result; | |
| 2612 } | |
| 2613 | |
|
6725
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|
2614 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
| 0 | 2615 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
| 2616 int method_table_offset_in_words = ioe->offset()/wordSize; | |
| 2617 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
| 2618 / itableOffsetEntry::size(); | |
| 2619 | |
| 2620 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
| 605 | 2621 // If the interface isn't implemented by the receiver class, |
| 0 | 2622 // the VM should throw IncompatibleClassChangeError. |
| 2623 if (cnt >= nof_interfaces) { | |
|
6725
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|
2624 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
| 0 | 2625 } |
| 2626 | |
|
6725
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6266
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|
2627 Klass* ik = ioe->interface_klass(); |
| 0 | 2628 if (ik == holder) break; |
| 2629 } | |
| 2630 | |
|
6725
da91efe96a93
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6266
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|
2631 itableMethodEntry* ime = ioe->first_method_entry(this); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2632 Method* m = ime[index].method(); |
| 0 | 2633 if (m == NULL) { |
|
6725
da91efe96a93
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coleenp
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6266
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|
2634 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
| 0 | 2635 } |
| 2636 return m; | |
| 2637 } | |
| 2638 | |
|
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2639 |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2640 #if INCLUDE_JVMTI |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2641 // update default_methods for redefineclasses for methods that are |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
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|
2642 // not yet in the vtable due to concurrent subclass define and superinterface |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
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|
2643 // redefinition |
|
ac9cb1d5a202
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acorn
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diff
changeset
|
2644 // Note: those in the vtable, should have been updated via adjust_method_entries |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
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|
2645 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
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|
2646 int methods_length, bool* trace_name_printed) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2647 // search the default_methods for uses of either obsolete or EMCP methods |
|
ac9cb1d5a202
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acorn
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12811
diff
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|
2648 if (default_methods() != NULL) { |
|
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acorn
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|
2649 for (int j = 0; j < methods_length; j++) { |
|
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|
2650 Method* old_method = old_methods[j]; |
|
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|
2651 Method* new_method = new_methods[j]; |
|
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diff
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|
2652 |
|
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|
2653 for (int index = 0; index < default_methods()->length(); index ++) { |
|
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|
2654 if (default_methods()->at(index) == old_method) { |
|
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|
2655 default_methods()->at_put(index, new_method); |
|
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|
2656 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
|
ac9cb1d5a202
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|
2657 if (!(*trace_name_printed)) { |
|
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|
2658 // RC_TRACE_MESG macro has an embedded ResourceMark |
|
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|
2659 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
|
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|
2660 external_name(), |
|
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|
2661 old_method->method_holder()->external_name())); |
|
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|
2662 *trace_name_printed = true; |
|
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|
2663 } |
|
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|
2664 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
|
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|
2665 new_method->name()->as_C_string(), |
|
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|
2666 new_method->signature()->as_C_string())); |
|
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|
2667 } |
|
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|
2668 } |
|
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|
2669 } |
|
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|
2670 } |
|
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|
2671 } |
|
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|
2672 } |
|
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|
2673 #endif // INCLUDE_JVMTI |
|
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|
2674 |
| 0 | 2675 // On-stack replacement stuff |
|
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|
2676 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
| 0 | 2677 // only one compilation can be active |
| 2678 NEEDS_CLEANUP | |
| 2679 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
| 2680 OsrList_lock->lock_without_safepoint_check(); | |
| 2681 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
|
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|
2682 n->set_osr_link(osr_nmethods_head()); |
| 0 | 2683 set_osr_nmethods_head(n); |
| 1783 | 2684 // Raise the highest osr level if necessary |
| 2685 if (TieredCompilation) { | |
|
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|
2686 Method* m = n->method(); |
| 1783 | 2687 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
| 2688 } | |
| 0 | 2689 // Remember to unlock again |
| 2690 OsrList_lock->unlock(); | |
| 1783 | 2691 |
| 2692 // Get rid of the osr methods for the same bci that have lower levels. | |
| 2693 if (TieredCompilation) { | |
| 2694 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
| 2695 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
| 2696 if (inv != NULL && inv->is_in_use()) { | |
| 2697 inv->make_not_entrant(); | |
| 2698 } | |
| 2699 } | |
| 2700 } | |
| 0 | 2701 } |
| 2702 | |
| 2703 | |
|
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|
2704 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
| 0 | 2705 // This is a short non-blocking critical region, so the no safepoint check is ok. |
| 2706 OsrList_lock->lock_without_safepoint_check(); | |
| 2707 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
| 2708 nmethod* last = NULL; | |
| 2709 nmethod* cur = osr_nmethods_head(); | |
| 1783 | 2710 int max_level = CompLevel_none; // Find the max comp level excluding n |
|
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|
2711 Method* m = n->method(); |
| 0 | 2712 // Search for match |
| 2713 while(cur != NULL && cur != n) { | |
| 1783 | 2714 if (TieredCompilation) { |
| 2715 // Find max level before n | |
| 2716 max_level = MAX2(max_level, cur->comp_level()); | |
| 2717 } | |
| 0 | 2718 last = cur; |
|
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jrose
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diff
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|
2719 cur = cur->osr_link(); |
| 0 | 2720 } |
| 1783 | 2721 nmethod* next = NULL; |
| 0 | 2722 if (cur == n) { |
| 1783 | 2723 next = cur->osr_link(); |
| 0 | 2724 if (last == NULL) { |
| 2725 // Remove first element | |
| 1783 | 2726 set_osr_nmethods_head(next); |
| 0 | 2727 } else { |
| 1783 | 2728 last->set_osr_link(next); |
| 0 | 2729 } |
| 2730 } | |
|
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jrose
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876
diff
changeset
|
2731 n->set_osr_link(NULL); |
| 1783 | 2732 if (TieredCompilation) { |
| 2733 cur = next; | |
| 2734 while (cur != NULL) { | |
| 2735 // Find max level after n | |
| 2736 max_level = MAX2(max_level, cur->comp_level()); | |
| 2737 cur = cur->osr_link(); | |
| 2738 } | |
| 2739 m->set_highest_osr_comp_level(max_level); | |
| 2740 } | |
| 0 | 2741 // Remember to unlock again |
| 2742 OsrList_lock->unlock(); | |
| 2743 } | |
| 2744 | |
|
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8003557: NPG: Klass* const k should be const Klass* k.
minqi
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10152
diff
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|
2745 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
| 0 | 2746 // This is a short non-blocking critical region, so the no safepoint check is ok. |
| 2747 OsrList_lock->lock_without_safepoint_check(); | |
| 2748 nmethod* osr = osr_nmethods_head(); | |
| 1783 | 2749 nmethod* best = NULL; |
| 0 | 2750 while (osr != NULL) { |
| 2751 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
| 1783 | 2752 // There can be a time when a c1 osr method exists but we are waiting |
| 2753 // for a c2 version. When c2 completes its osr nmethod we will trash | |
| 2754 // the c1 version and only be able to find the c2 version. However | |
| 2755 // while we overflow in the c1 code at back branches we don't want to | |
| 2756 // try and switch to the same code as we are already running | |
| 2757 | |
| 0 | 2758 if (osr->method() == m && |
| 2759 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
| 1783 | 2760 if (match_level) { |
| 2761 if (osr->comp_level() == comp_level) { | |
| 2762 // Found a match - return it. | |
| 2763 OsrList_lock->unlock(); | |
| 2764 return osr; | |
| 2765 } | |
| 2766 } else { | |
| 2767 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
| 2768 if (osr->comp_level() == CompLevel_highest_tier) { | |
| 2769 // Found the best possible - return it. | |
| 2770 OsrList_lock->unlock(); | |
| 2771 return osr; | |
| 2772 } | |
| 2773 best = osr; | |
| 2774 } | |
| 2775 } | |
| 0 | 2776 } |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2777 osr = osr->osr_link(); |
| 0 | 2778 } |
| 2779 OsrList_lock->unlock(); | |
| 1783 | 2780 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
| 2781 return best; | |
| 2782 } | |
| 0 | 2783 return NULL; |
| 2784 } | |
| 2785 | |
|
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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10343
diff
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|
2786 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
|
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
diff
changeset
|
2787 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
|
2788 MutexLocker ml(MemberNameTable_lock); |
|
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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10343
diff
changeset
|
2789 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
|
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2790 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
|
2791 |
|
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2792 if (_member_names == NULL) { |
|
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2793 _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
|
2794 } |
|
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2795 _member_names->add_member_name(index, mem_name_wref); |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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|
2796 } |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2797 |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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10343
diff
changeset
|
2798 oop InstanceKlass::get_member_name(int index) { |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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10343
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changeset
|
2799 MutexLocker ml(MemberNameTable_lock); |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2800 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2801 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
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|
2802 |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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parents:
10343
diff
changeset
|
2803 if (_member_names == NULL) { |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2804 return NULL; |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
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|
2805 } |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2806 oop mem_name =_member_names->get_member_name(index); |
|
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2807 return mem_name; |
|
10133
6337ca4dcad8
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9062
diff
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|
2808 } |
|
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2809 |
| 0 | 2810 // ----------------------------------------------------------------------------------------------------- |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2811 // Printing |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
2812 |
| 0 | 2813 #ifndef PRODUCT |
| 2814 | |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2815 #define BULLET " - " |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2816 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2817 static const char* state_names[] = { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2818 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2819 }; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2820 |
|
12264
b2e698d2276c
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12067
diff
changeset
|
2821 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
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12067
diff
changeset
|
2822 for (int i = 0; i < len; i++) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
changeset
|
2823 intptr_t e = start[i]; |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
changeset
|
2824 st->print("%d : " INTPTR_FORMAT, i, e); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
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|
2825 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
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|
2826 st->print(" "); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
changeset
|
2827 ((Metadata*)e)->print_value_on(st); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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12067
diff
changeset
|
2828 } |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
changeset
|
2829 st->cr(); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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12067
diff
changeset
|
2830 } |
|
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12067
diff
changeset
|
2831 } |
|
b2e698d2276c
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drchase
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12067
diff
changeset
|
2832 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2833 void InstanceKlass::print_on(outputStream* st) const { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
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|
2834 assert(is_klass(), "must be klass"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2835 Klass::print_on(st); |
|
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6266
diff
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|
2836 |
|
da91efe96a93
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6266
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changeset
|
2837 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
|
da91efe96a93
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coleenp
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6266
diff
changeset
|
2838 st->print(BULLET"klass size: %d", size()); st->cr(); |
|
da91efe96a93
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diff
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|
2839 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
|
da91efe96a93
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coleenp
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6266
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changeset
|
2840 st->print(BULLET"state: "); st->print_cr(state_names[_init_state]); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2841 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
|
da91efe96a93
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coleenp
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6266
diff
changeset
|
2842 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2843 st->print(BULLET"sub: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2844 Klass* sub = subklass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2845 int n; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2846 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2847 if (n < MaxSubklassPrintSize) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2848 sub->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2849 st->print(" "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2850 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2851 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2852 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2853 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2854 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2855 if (is_interface()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2856 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2857 if (nof_implementors() == 1) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2858 st->print_cr(BULLET"implementor: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2859 st->print(" "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2860 implementor()->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2861 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2862 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2863 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2864 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2865 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
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diff
changeset
|
2866 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
|
2867 if (Verbose || WizardMode) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2868 Array<Method*>* method_array = methods(); |
|
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2869 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
|
2870 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2871 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2872 } |
|
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2873 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
|
2874 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
|
2875 if (Verbose && default_methods() != NULL) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2876 Array<Method*>* method_array = default_methods(); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2877 for (int i = 0; i < method_array->length(); i++) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2878 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
|
2879 } |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2880 } |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2881 if (default_vtable_indices() != NULL) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2882 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
|
2883 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2884 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2885 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2886 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
|
2887 if (class_loader_data() != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2888 st->print(BULLET"class loader data: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2889 class_loader_data()->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2890 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2891 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2892 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2893 if (source_file_name() != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2894 st->print(BULLET"source file: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2895 source_file_name()->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2896 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2897 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2898 if (source_debug_extension() != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2899 st->print(BULLET"source debug extension: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2900 st->print("%s", source_debug_extension()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2901 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2902 } |
| 8031 | 2903 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
| 2904 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
| 2905 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
| 2906 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2907 { |
|
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2908 bool have_pv = false; |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2909 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2910 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
|
2911 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
|
2912 if (!have_pv) |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2913 st->print(BULLET"previous version: "); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2914 have_pv = true; |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2915 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
|
2916 } |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2917 if (have_pv) st->cr(); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2918 } // pvw is cleaned up |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2919 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2920 if (generic_signature() != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2921 st->print(BULLET"generic signature: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2922 generic_signature()->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2923 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2924 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2925 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
|
2926 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
|
2927 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
|
2928 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
|
2929 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
|
2930 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
|
2931 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
|
2932 FieldPrinter print_static_field(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2933 ((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
|
2934 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
|
2935 FieldPrinter print_nonstatic_field(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2936 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2937 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2938 st->print(BULLET"non-static oop maps: "); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2939 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2940 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2941 while (map < end_map) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2942 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
|
2943 map++; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2944 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2945 st->cr(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2946 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2947 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2948 #endif //PRODUCT |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2949 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2950 void InstanceKlass::print_value_on(outputStream* st) const { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2951 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
|
2952 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
|
2953 name()->print_value_on(st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2954 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2956 #ifndef PRODUCT |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2957 |
| 0 | 2958 void FieldPrinter::do_field(fieldDescriptor* fd) { |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
changeset
|
2959 _st->print(BULLET); |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
2960 if (_obj == NULL) { |
| 0 | 2961 fd->print_on(_st); |
| 2962 _st->cr(); | |
| 2963 } else { | |
| 2964 fd->print_on_for(_st, _obj); | |
| 2965 _st->cr(); | |
| 2966 } | |
| 2967 } | |
| 2968 | |
| 2969 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2970 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
| 0 | 2971 Klass::oop_print_on(obj, st); |
| 2972 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2973 if (this == SystemDictionary::String_klass()) { |
| 0 | 2974 typeArrayOop value = java_lang_String::value(obj); |
| 2975 juint offset = java_lang_String::offset(obj); | |
| 2976 juint length = java_lang_String::length(obj); | |
| 2977 if (value != NULL && | |
| 2978 value->is_typeArray() && | |
| 2979 offset <= (juint) value->length() && | |
| 2980 offset + length <= (juint) value->length()) { | |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2981 st->print(BULLET"string: "); |
| 0 | 2982 Handle h_obj(obj); |
| 2983 java_lang_String::print(h_obj, st); | |
| 2984 st->cr(); | |
| 2985 if (!WizardMode) return; // that is enough | |
| 2986 } | |
| 2987 } | |
| 2988 | |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2989 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
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parents:
2357
diff
changeset
|
2990 FieldPrinter print_field(st, obj); |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
2991 do_nonstatic_fields(&print_field); |
| 0 | 2992 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2993 if (this == SystemDictionary::Class_klass()) { |
|
665
c89f86385056
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jrose
parents:
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diff
changeset
|
2994 st->print(BULLET"signature: "); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2995 java_lang_Class::print_signature(obj, st); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2996 st->cr(); |
|
6725
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coleenp
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changeset
|
2997 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2998 st->print(BULLET"fake entry for mirror: "); |
|
6725
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changeset
|
2999 mirrored_klass->print_value_on_maybe_null(st); |
| 0 | 3000 st->cr(); |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3001 Klass* array_klass = java_lang_Class::array_klass(obj); |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3002 st->print(BULLET"fake entry for array: "); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3003 array_klass->print_value_on_maybe_null(st); |
| 0 | 3004 st->cr(); |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3005 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
|
3006 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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diff
changeset
|
3007 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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diff
changeset
|
3008 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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diff
changeset
|
3009 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
|
3010 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3011 } else if (this == SystemDictionary::MethodType_klass()) { |
|
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3012 st->print(BULLET"signature: "); |
|
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3013 java_lang_invoke_MethodType::print_signature(obj, st); |
|
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3014 st->cr(); |
| 0 | 3015 } |
| 3016 } | |
| 3017 | |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3018 #endif //PRODUCT |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3019 |
|
6725
da91efe96a93
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changeset
|
3020 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
| 0 | 3021 st->print("a "); |
| 3022 name()->print_value_on(st); | |
| 3023 obj->print_address_on(st); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 if (this == SystemDictionary::String_klass() |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3025 && java_lang_String::value(obj) != NULL) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3026 ResourceMark rm; |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3027 int len = java_lang_String::length(obj); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3028 int plen = (len < 24 ? len : 12); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3029 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3030 st->print(" = \"%s\"", str); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3031 if (len > plen) |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3032 st->print("...[%d]", len); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3033 } else if (this == SystemDictionary::Class_klass()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3034 Klass* k = java_lang_Class::as_Klass(obj); |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3035 st->print(" = "); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3036 if (k != NULL) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3037 k->print_value_on(st); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3038 } else { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3039 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3040 st->print("%s", tname ? tname : "type?"); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3041 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3042 } else if (this == SystemDictionary::MethodType_klass()) { |
|
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3043 st->print(" = "); |
|
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3044 java_lang_invoke_MethodType::print_signature(obj, st); |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3045 } else if (java_lang_boxing_object::is_instance(obj)) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3046 st->print(" = "); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3047 java_lang_boxing_object::print(obj, st); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3048 } else if (this == SystemDictionary::LambdaForm_klass()) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3049 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3050 if (vmentry != NULL) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3051 st->print(" => "); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3052 vmentry->print_value_on(st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3053 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3054 } else if (this == SystemDictionary::MemberName_klass()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3055 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3056 if (vmtarget != NULL) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3057 st->print(" = "); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3058 vmtarget->print_value_on(st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3059 } else { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3060 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3061 st->print("."); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3062 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3063 } |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3064 } |
| 0 | 3065 } |
| 3066 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3067 const char* InstanceKlass::internal_name() const { |
| 0 | 3068 return external_name(); |
| 3069 } | |
| 3070 | |
| 7956 | 3071 #if INCLUDE_SERVICES |
| 3072 // Size Statistics | |
| 3073 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
| 3074 Klass::collect_statistics(sz); | |
| 3075 | |
| 3076 sz->_inst_size = HeapWordSize * size_helper(); | |
| 3077 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
| 3078 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
| 3079 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
| 3080 ((is_interface() || is_anonymous()) ? | |
| 3081 align_object_offset(nonstatic_oop_map_size()) : | |
| 3082 nonstatic_oop_map_size()); | |
| 3083 | |
| 3084 int n = 0; | |
| 3085 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
| 3086 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
| 3087 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
| 3088 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
| 3089 n += (sz->_fields_bytes = sz->count_array(fields())); | |
| 3090 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
| 3091 sz->_ro_bytes += n; | |
| 3092 | |
| 3093 const ConstantPool* cp = constants(); | |
| 3094 if (cp) { | |
| 3095 cp->collect_statistics(sz); | |
| 3096 } | |
| 3097 | |
| 3098 const Annotations* anno = annotations(); | |
| 3099 if (anno) { | |
| 3100 anno->collect_statistics(sz); | |
| 3101 } | |
| 3102 | |
| 3103 const Array<Method*>* methods_array = methods(); | |
| 3104 if (methods()) { | |
| 3105 for (int i = 0; i < methods_array->length(); i++) { | |
| 3106 Method* method = methods_array->at(i); | |
| 3107 if (method) { | |
| 3108 sz->_method_count ++; | |
| 3109 method->collect_statistics(sz); | |
| 3110 } | |
| 3111 } | |
| 3112 } | |
| 3113 } | |
| 3114 #endif // INCLUDE_SERVICES | |
| 3115 | |
| 0 | 3116 // Verification |
| 3117 | |
| 3118 class VerifyFieldClosure: public OopClosure { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3119 protected: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3120 template <class T> void do_oop_work(T* p) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3121 oop obj = oopDesc::load_decode_heap_oop(p); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3122 if (!obj->is_oop_or_null()) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3123 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
| 0 | 3124 Universe::print(); |
| 3125 guarantee(false, "boom"); | |
| 3126 } | |
| 3127 } | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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52
diff
changeset
|
3128 public: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3129 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3130 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
| 0 | 3131 }; |
| 3132 | |
|
14378
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
14221
diff
changeset
|
3133 void InstanceKlass::verify_on(outputStream* st) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3134 #ifndef PRODUCT |
| 11034 | 3135 // Avoid redundant verifies, this really should be in product. |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3136 if (_verify_count == Universe::verify_count()) return; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3137 _verify_count = Universe::verify_count(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3138 #endif |
| 11034 | 3139 |
| 3140 // Verify Klass | |
|
14378
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
14221
diff
changeset
|
3141 Klass::verify_on(st); |
|
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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14221
diff
changeset
|
3142 |
|
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
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14221
diff
changeset
|
3143 // Verify that klass is present in ClassLoaderData |
|
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
14221
diff
changeset
|
3144 guarantee(class_loader_data()->contains_klass(this), |
|
48314d596a04
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
14221
diff
changeset
|
3145 "this class isn't found in class loader data"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3146 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3147 // Verify vtables |
|
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|
3148 if (is_linked()) { |
| 11034 | 3149 ResourceMark rm; |
|
6725
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|
3150 // $$$ This used to be done only for m/s collections. Doing it |
|
da91efe96a93
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|
3151 // always seemed a valid generalization. (DLD -- 6/00) |
|
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|
3152 vtable()->verify(st); |
|
da91efe96a93
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|
3153 } |
|
da91efe96a93
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|
3154 |
|
da91efe96a93
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|
3155 // Verify first subklass |
|
da91efe96a93
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|
3156 if (subklass_oop() != NULL) { |
|
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|
3157 guarantee(subklass_oop()->is_klass(), "should be klass"); |
|
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|
3158 } |
|
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|
3159 |
|
da91efe96a93
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diff
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|
3160 // Verify siblings |
|
da91efe96a93
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|
3161 Klass* super = this->super(); |
|
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|
3162 Klass* sib = next_sibling(); |
|
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|
3163 if (sib != NULL) { |
|
da91efe96a93
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|
3164 if (sib == this) { |
|
da91efe96a93
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|
3165 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
|
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|
3166 } |
|
da91efe96a93
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|
3167 |
|
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|
3168 guarantee(sib->is_klass(), "should be klass"); |
|
da91efe96a93
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|
3169 guarantee(sib->super() == super, "siblings should have same superklass"); |
|
da91efe96a93
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|
3170 } |
|
da91efe96a93
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|
3171 |
|
da91efe96a93
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|
3172 // Verify implementor fields |
|
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|
3173 Klass* im = implementor(); |
|
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|
3174 if (im != NULL) { |
|
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|
3175 guarantee(is_interface(), "only interfaces should have implementor set"); |
|
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|
3176 guarantee(im->is_klass(), "should be klass"); |
| 6983 | 3177 guarantee(!im->is_interface() || im == this, |
|
6725
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|
3178 "implementors cannot be interfaces"); |
|
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|
3179 } |
|
da91efe96a93
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|
3180 |
|
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|
3181 // Verify local interfaces |
|
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|
3182 if (local_interfaces()) { |
|
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|
3183 Array<Klass*>* local_interfaces = this->local_interfaces(); |
|
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|
3184 for (int j = 0; j < local_interfaces->length(); j++) { |
|
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|
3185 Klass* e = local_interfaces->at(j); |
| 6983 | 3186 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
|
6725
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|
3187 } |
|
da91efe96a93
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|
3188 } |
|
da91efe96a93
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diff
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|
3189 |
|
da91efe96a93
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|
3190 // Verify transitive interfaces |
|
da91efe96a93
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|
3191 if (transitive_interfaces() != NULL) { |
|
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|
3192 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
|
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|
3193 for (int j = 0; j < transitive_interfaces->length(); j++) { |
|
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|
3194 Klass* e = transitive_interfaces->at(j); |
| 6983 | 3195 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
|
6725
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|
3196 } |
|
da91efe96a93
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|
3197 } |
|
da91efe96a93
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diff
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|
3198 |
|
da91efe96a93
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diff
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|
3199 // Verify methods |
|
da91efe96a93
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|
3200 if (methods() != NULL) { |
|
da91efe96a93
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|
3201 Array<Method*>* methods = this->methods(); |
|
da91efe96a93
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|
3202 for (int j = 0; j < methods->length(); j++) { |
|
da91efe96a93
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|
3203 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
|
da91efe96a93
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|
3204 } |
|
da91efe96a93
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|
3205 for (int j = 0; j < methods->length() - 1; j++) { |
|
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|
3206 Method* m1 = methods->at(j); |
|
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|
3207 Method* m2 = methods->at(j + 1); |
|
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|
3208 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
|
da91efe96a93
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|
3209 } |
|
da91efe96a93
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diff
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|
3210 } |
|
da91efe96a93
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diff
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|
3211 |
|
da91efe96a93
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diff
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|
3212 // Verify method ordering |
|
da91efe96a93
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coleenp
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diff
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|
3213 if (method_ordering() != NULL) { |
|
da91efe96a93
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|
3214 Array<int>* method_ordering = this->method_ordering(); |
|
da91efe96a93
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|
3215 int length = method_ordering->length(); |
|
da91efe96a93
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diff
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|
3216 if (JvmtiExport::can_maintain_original_method_order() || |
|
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3217 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
|
6725
da91efe96a93
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coleenp
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|
3218 guarantee(length == methods()->length(), "invalid method ordering length"); |
|
da91efe96a93
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coleenp
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diff
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|
3219 jlong sum = 0; |
|
da91efe96a93
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6266
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changeset
|
3220 for (int j = 0; j < length; j++) { |
|
da91efe96a93
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coleenp
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diff
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|
3221 int original_index = method_ordering->at(j); |
|
da91efe96a93
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coleenp
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|
3222 guarantee(original_index >= 0, "invalid method ordering index"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3223 guarantee(original_index < length, "invalid method ordering index"); |
|
da91efe96a93
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coleenp
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diff
changeset
|
3224 sum += original_index; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
3225 } |
|
da91efe96a93
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6266
diff
changeset
|
3226 // Verify sum of indices 0,1,...,length-1 |
|
da91efe96a93
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coleenp
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diff
changeset
|
3227 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
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|
3228 } else { |
|
da91efe96a93
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coleenp
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6266
diff
changeset
|
3229 guarantee(length == 0, "invalid method ordering length"); |
|
da91efe96a93
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coleenp
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6266
diff
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|
3230 } |
|
da91efe96a93
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diff
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|
3231 } |
|
da91efe96a93
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diff
changeset
|
3232 |
|
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3233 // Verify default methods |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3234 if (default_methods() != NULL) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3235 Array<Method*>* methods = this->default_methods(); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3236 for (int j = 0; j < methods->length(); j++) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3237 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3238 } |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3239 for (int j = 0; j < methods->length() - 1; j++) { |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3240 Method* m1 = methods->at(j); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3241 Method* m2 = methods->at(j + 1); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3242 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3243 } |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3244 } |
|
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3245 |
|
6725
da91efe96a93
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changeset
|
3246 // Verify JNI static field identifiers |
|
da91efe96a93
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|
3247 if (jni_ids() != NULL) { |
|
da91efe96a93
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changeset
|
3248 jni_ids()->verify(this); |
|
da91efe96a93
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|
3249 } |
|
da91efe96a93
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diff
changeset
|
3250 |
|
da91efe96a93
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coleenp
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diff
changeset
|
3251 // Verify other fields |
|
da91efe96a93
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coleenp
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changeset
|
3252 if (array_klasses() != NULL) { |
|
da91efe96a93
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|
3253 guarantee(array_klasses()->is_klass(), "should be klass"); |
|
da91efe96a93
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|
3254 } |
|
da91efe96a93
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changeset
|
3255 if (constants() != NULL) { |
|
da91efe96a93
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diff
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|
3256 guarantee(constants()->is_constantPool(), "should be constant pool"); |
|
da91efe96a93
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|
3257 } |
|
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3258 const Klass* host = host_klass(); |
|
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3259 if (host != NULL) { |
|
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3260 guarantee(host->is_klass(), "should be klass"); |
|
6725
da91efe96a93
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|
3261 } |
|
da91efe96a93
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changeset
|
3262 } |
|
da91efe96a93
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diff
changeset
|
3263 |
|
da91efe96a93
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|
3264 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
| 0 | 3265 Klass::oop_verify_on(obj, st); |
| 3266 VerifyFieldClosure blk; | |
|
6725
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|
3267 obj->oop_iterate_no_header(&blk); |
| 0 | 3268 } |
| 3269 | |
|
6725
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|
3270 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3271 // JNIid class for jfieldIDs only |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3272 // Note to reviewers: |
|
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3273 // These JNI functions are just moved over to column 1 and not changed |
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3274 // in the compressed oops workspace. |
|
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3275 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
|
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3276 _holder = holder; |
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3277 _offset = offset; |
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3278 _next = next; |
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3279 debug_only(_is_static_field_id = false;) |
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3280 } |
| 0 | 3281 |
| 3282 | |
|
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3283 JNIid* JNIid::find(int offset) { |
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3284 JNIid* current = this; |
|
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3285 while (current != NULL) { |
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3286 if (current->offset() == offset) return current; |
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3287 current = current->next(); |
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3288 } |
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|
3289 return NULL; |
|
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3290 } |
| 0 | 3291 |
| 3292 void JNIid::deallocate(JNIid* current) { | |
|
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3293 while (current != NULL) { |
|
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|
3294 JNIid* next = current->next(); |
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|
3295 delete current; |
|
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|
3296 current = next; |
|
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3297 } |
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3298 } |
| 0 | 3299 |
| 3300 | |
|
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3301 void JNIid::verify(Klass* holder) { |
|
6735
aed758eda82a
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|
3302 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
|
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3303 int end_field_offset; |
|
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3304 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
| 0 | 3305 |
|
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3306 JNIid* current = this; |
|
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|
3307 while (current != NULL) { |
|
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3308 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
|
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|
3309 #ifdef ASSERT |
|
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3310 int o = current->offset(); |
|
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|
3311 if (current->is_static_field_id()) { |
|
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|
3312 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
|
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|
3313 } |
|
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|
3314 #endif |
|
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|
3315 current = current->next(); |
|
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|
3316 } |
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|
3317 } |
| 0 | 3318 |
| 3319 | |
| 3320 #ifdef ASSERT | |
|
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3321 void InstanceKlass::set_init_state(ClassState state) { |
|
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3322 bool good_state = is_shared() ? (_init_state <= state) |
|
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3323 : (_init_state < state); |
|
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|
3324 assert(good_state || state == allocated, "illegal state transition"); |
|
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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|
3325 _init_state = (u1)state; |
|
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3326 } |
| 0 | 3327 #endif |
| 3328 | |
| 3329 | |
| 3330 // RedefineClasses() support for previous versions: | |
| 3331 | |
|
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3332 // Purge previous versions |
|
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|
3333 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
|
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3334 if (ik->previous_versions() != NULL) { |
|
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3335 // This klass has previous versions so see what we can cleanup |
|
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3336 // while it is safe to do so. |
|
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3337 |
|
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|
3338 int deleted_count = 0; // leave debugging breadcrumbs |
|
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3339 int live_count = 0; |
|
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3340 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
|
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3341 ClassLoaderData::the_null_class_loader_data() : |
|
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|
3342 ik->class_loader_data(); |
|
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3343 |
|
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|
3344 // RC_TRACE macro has an embedded ResourceMark |
|
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|
3345 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
|
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|
3346 ik->external_name(), ik->previous_versions()->length())); |
|
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3347 |
|
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|
3348 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
|
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|
3349 // check the previous versions array |
|
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|
3350 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
|
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|
3351 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
|
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|
3352 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
|
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|
3353 |
|
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|
3354 ConstantPool* pvcp = cp_ref; |
|
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3355 if (!pvcp->on_stack()) { |
|
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|
3356 // If the constant pool isn't on stack, none of the methods |
|
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|
3357 // are executing. Delete all the methods, the constant pool and |
|
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|
3358 // and this previous version node. |
|
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|
3359 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
|
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|
3360 if (method_refs != NULL) { |
|
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|
3361 for (int j = method_refs->length() - 1; j >= 0; j--) { |
|
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|
3362 Method* method = method_refs->at(j); |
|
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|
3363 assert(method != NULL, "method ref was unexpectedly cleared"); |
|
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|
3364 method_refs->remove_at(j); |
|
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|
3365 // method will be freed with associated class. |
|
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|
3366 } |
|
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|
3367 } |
|
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|
3368 // Remove the constant pool |
|
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|
3369 delete pv_node; |
|
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|
3370 // Since we are traversing the array backwards, we don't have to |
|
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|
3371 // do anything special with the index. |
|
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|
3372 ik->previous_versions()->remove_at(i); |
|
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|
3373 deleted_count++; |
|
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|
3374 continue; |
|
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|
3375 } else { |
|
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|
3376 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
|
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|
3377 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
|
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|
3378 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
|
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|
3379 live_count++; |
|
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|
3380 } |
|
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|
3381 |
|
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|
3382 // At least one method is live in this previous version, clean out |
|
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|
3383 // the others or mark them as obsolete. |
|
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|
3384 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
|
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|
3385 if (method_refs != NULL) { |
|
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|
3386 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
|
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|
3387 method_refs->length())); |
|
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|
3388 for (int j = method_refs->length() - 1; j >= 0; j--) { |
|
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|
3389 Method* method = method_refs->at(j); |
|
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|
3390 assert(method != NULL, "method ref was unexpectedly cleared"); |
|
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|
3391 |
|
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|
3392 // Remove the emcp method if it's not executing |
|
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|
3393 // If it's been made obsolete by a redefinition of a non-emcp |
|
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|
3394 // method, mark it as obsolete but leave it to clean up later. |
|
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|
3395 if (!method->on_stack()) { |
|
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|
3396 method_refs->remove_at(j); |
|
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|
3397 } else if (emcp_method_count == 0) { |
|
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|
3398 method->set_is_obsolete(); |
|
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|
3399 } else { |
|
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|
3400 // RC_TRACE macro has an embedded ResourceMark |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3401 RC_TRACE(0x00000200, |
|
da91efe96a93
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coleenp
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6266
diff
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|
3402 ("purge: %s(%s): prev method @%d in version @%d is alive", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3403 method->name()->as_C_string(), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3404 method->signature()->as_C_string(), j, i)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3405 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3406 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3407 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3408 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3409 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3410 RC_TRACE(0x00000200, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3411 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3412 deleted_count)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3413 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3414 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3415 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3416 // External interface for use during class unloading. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3417 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3418 // Call with >0 emcp methods since they are not currently being redefined. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3419 purge_previous_versions_internal(ik, 1); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3420 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3421 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3422 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3423 // Potentially add an information node that contains pointers to the |
| 0 | 3424 // interesting parts of the previous version of the_class. |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3425 // This is also where we clean out any unused references. |
|
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3426 // Note that while we delete nodes from the _previous_versions |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3427 // array, we never delete the array itself until the klass is |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3428 // unloaded. The has_been_redefined() query depends on that fact. |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3429 // |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3430 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3431 BitMap* emcp_methods, int emcp_method_count) { |
| 0 | 3432 assert(Thread::current()->is_VM_thread(), |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3433 "only VMThread can add previous versions"); |
| 0 | 3434 |
| 3435 if (_previous_versions == NULL) { | |
| 3436 // This is the first previous version so make some space. | |
| 3437 // Start with 2 elements under the assumption that the class | |
| 3438 // won't be redefined much. | |
| 6197 | 3439 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
| 0 | 3440 GrowableArray<PreviousVersionNode *>(2, true); |
| 3441 } | |
| 3442 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3443 ConstantPool* cp_ref = ikh->constants(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3444 |
| 0 | 3445 // RC_TRACE macro has an embedded ResourceMark |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3446 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3447 "on_stack=%d", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3448 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3449 cp_ref->on_stack())); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3450 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3451 // If the constant pool for this previous version of the class |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3452 // is not marked as being on the stack, then none of the methods |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3453 // in this previous version of the class are on the stack so |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3454 // we don't need to create a new PreviousVersionNode. However, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3455 // we still need to examine older previous versions below. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3456 Array<Method*>* old_methods = ikh->methods(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3457 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3458 if (cp_ref->on_stack()) { |
|
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3459 PreviousVersionNode * pv_node = NULL; |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3460 if (emcp_method_count == 0) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3461 // 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
|
3462 pv_node = new PreviousVersionNode(cp_ref, NULL); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3463 RC_TRACE(0x00000400, |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3464 ("add: all methods are obsolete; flushing any EMCP refs")); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3465 } else { |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3466 int local_count = 0; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3467 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
|
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3468 GrowableArray<Method*>(emcp_method_count, true); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3469 for (int i = 0; i < old_methods->length(); i++) { |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3470 if (emcp_methods->at(i)) { |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3471 // this old method is EMCP. Save it only if it's on the stack |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3472 Method* old_method = old_methods->at(i); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3473 if (old_method->on_stack()) { |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3474 method_refs->append(old_method); |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3475 } |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3476 if (++local_count >= emcp_method_count) { |
|
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3477 // 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
|
3478 break; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3479 } |
| 0 | 3480 } |
| 3481 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3482 // 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
|
3483 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
|
3484 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3485 // append new previous version. |
|
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3486 _previous_versions->append(pv_node); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3487 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3488 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3489 // 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
|
3490 // is a good time to clear out unused references. |
| 0 | 3491 |
| 3492 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
| 3493 _previous_versions->length())); | |
| 3494 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3495 // Purge previous versions not executing on the stack |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3496 purge_previous_versions_internal(this, emcp_method_count); |
| 0 | 3497 |
| 3498 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
| 3499 | |
| 3500 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
|
3501 _previous_versions->length() > 0) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3502 // We have a mix of obsolete and EMCP methods so we have to |
| 0 | 3503 // clear out any matching EMCP method entries the hard way. |
| 3504 int local_count = 0; | |
| 3505 for (int i = 0; i < old_methods->length(); i++) { | |
| 3506 if (!emcp_methods->at(i)) { | |
| 3507 // only obsolete methods are interesting | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3508 Method* old_method = old_methods->at(i); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3509 Symbol* m_name = old_method->name(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3510 Symbol* m_signature = old_method->signature(); |
| 0 | 3511 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3512 // we might not have added the last entry |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3513 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
|
3514 // check the previous versions array for non executing obsolete methods |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3515 PreviousVersionNode * pv_node = _previous_versions->at(j); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3516 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3517 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
| 0 | 3518 if (method_refs == NULL) { |
| 3519 // We have run into a PreviousVersion generation where | |
| 3520 // all methods were made obsolete during that generation's | |
| 3521 // RedefineClasses() operation. At the time of that | |
| 3522 // operation, all EMCP methods were flushed so we don't | |
| 3523 // have to go back any further. | |
| 3524 // | |
| 3525 // A NULL method_refs is different than an empty method_refs. | |
| 3526 // We cannot infer any optimizations about older generations | |
| 3527 // from an empty method_refs for the current generation. | |
| 3528 break; | |
| 3529 } | |
| 3530 | |
| 3531 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
|
3532 Method* method = method_refs->at(k); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3533 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3534 if (!method->is_obsolete() && |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3535 method->name() == m_name && |
| 0 | 3536 method->signature() == m_signature) { |
| 3537 // The current RedefineClasses() call has made all EMCP | |
| 3538 // 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
|
3539 // and remove the reference. |
| 0 | 3540 RC_TRACE(0x00000400, |
| 3541 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
| 3542 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
| 3543 | |
| 3544 method->set_is_obsolete(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3545 // 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
|
3546 // clean up later. |
| 0 | 3547 break; |
| 3548 } | |
| 3549 } | |
| 3550 | |
| 3551 // The previous loop may not find a matching EMCP method, but | |
| 3552 // that doesn't mean that we can optimize and not go any | |
| 3553 // 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
|
3554 // method for this generation could have already been deleted, |
| 0 | 3555 // 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
|
3556 // been deleted. |
| 0 | 3557 } |
| 3558 | |
| 3559 if (++local_count >= obsolete_method_count) { | |
| 3560 // no more obsolete methods so bail out now | |
| 3561 break; | |
| 3562 } | |
| 3563 } | |
| 3564 } | |
| 3565 } | |
| 3566 } // end add_previous_version() | |
| 3567 | |
| 3568 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3569 // Determine if InstanceKlass has a previous version. |
|
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3570 bool InstanceKlass::has_previous_version() const { |
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3571 return (_previous_versions != NULL && _previous_versions->length() > 0); |
| 0 | 3572 } // end has_previous_version() |
| 3573 | |
|
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3574 |
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3575 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3576 Method* m = NULL; |
| 0 | 3577 if (idnum < methods()->length()) { |
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3578 m = methods()->at(idnum); |
| 0 | 3579 } |
| 3580 if (m == NULL || m->method_idnum() != idnum) { | |
| 3581 for (int index = 0; index < methods()->length(); ++index) { | |
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3582 m = methods()->at(index); |
| 0 | 3583 if (m->method_idnum() == idnum) { |
| 3584 return m; | |
| 3585 } | |
| 3586 } | |
|
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3587 // None found, return null for the caller to handle. |
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3588 return NULL; |
| 0 | 3589 } |
| 3590 return m; | |
| 3591 } | |
| 3592 | |
|
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3593 jint InstanceKlass::get_cached_class_file_len() { |
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3594 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3595 } |
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3596 |
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3597 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3598 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3599 } |
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3600 |
| 0 | 3601 |
| 3602 // Construct a PreviousVersionNode entry for the array hung off | |
|
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3603 // the InstanceKlass. |
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3604 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3605 GrowableArray<Method*>* prev_EMCP_methods) { |
| 0 | 3606 |
| 3607 _prev_constant_pool = prev_constant_pool; | |
| 3608 _prev_EMCP_methods = prev_EMCP_methods; | |
| 3609 } | |
| 3610 | |
| 3611 | |
| 3612 // Destroy a PreviousVersionNode | |
| 3613 PreviousVersionNode::~PreviousVersionNode() { | |
| 3614 if (_prev_constant_pool != NULL) { | |
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3615 _prev_constant_pool = NULL; |
| 0 | 3616 } |
| 3617 | |
| 3618 if (_prev_EMCP_methods != NULL) { | |
| 3619 delete _prev_EMCP_methods; | |
| 3620 } | |
| 3621 } | |
| 3622 | |
| 3623 // Construct a helper for walking the previous versions array | |
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3624 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3625 _thread = thread; |
| 0 | 3626 _previous_versions = ik->previous_versions(); |
| 3627 _current_index = 0; | |
| 3628 _current_p = NULL; | |
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3629 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
| 0 | 3630 } |
| 3631 | |
| 3632 | |
| 3633 // Return the interesting information for the next previous version | |
| 3634 // of the klass. Returns NULL if there are no more previous versions. | |
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3635 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
| 0 | 3636 if (_previous_versions == NULL) { |
| 3637 // no previous versions so nothing to return | |
| 3638 return NULL; | |
| 3639 } | |
| 3640 | |
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3641 _current_p = NULL; // reset to NULL |
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3642 _current_constant_pool_handle = NULL; |
| 0 | 3643 |
| 3644 int length = _previous_versions->length(); | |
| 3645 | |
| 3646 while (_current_index < length) { | |
| 3647 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3648 |
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3649 // Save a handle to the constant pool for this previous version, |
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3650 // which keeps all the methods from being deallocated. |
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3651 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3652 _current_p = pv_node; |
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3653 return pv_node; |
| 0 | 3654 } |
| 3655 | |
| 3656 return NULL; | |
| 3657 } // end next_previous_version() |