Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlass.cpp @ 14477:96d2c94bbdd0
8035493: JVMTI PopFrame capability must instruct compilers not to prune locals
Reviewed-by: kvn, sla, coleenp, sspitsyn
author | mgronlun |
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date | Sat, 22 Feb 2014 10:22:05 +0100 |
parents | e6195383bcaf |
children | 28f281e8de1d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/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; | |
1751
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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(). | |
875
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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 | |
5998
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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 |
5998
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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 |
5998
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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(), ""); |
5998
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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(); |
5998
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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) { |
5998
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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() { |
5998
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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) { | |
1160 _oop_map_cache = new OopMapCache(); | |
1161 } | |
1162 } | |
1163 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1164 _oop_map_cache->lookup(method, bci, entry_for); | |
1165 } | |
1166 | |
1167 | |
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1168 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1169 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1170 Symbol* f_name = fs.name(); |
1171 Symbol* f_sig = fs.signature(); | |
0 | 1172 if (f_name == name && f_sig == sig) { |
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1173 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1174 return true; |
1175 } | |
1176 } | |
1177 return false; | |
1178 } | |
1179 | |
1180 | |
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1181 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1182 const int n = local_interfaces()->length(); |
1183 for (int i = 0; i < n; i++) { | |
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1184 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1185 assert(intf1->is_interface(), "just checking type"); |
0 | 1186 // search for field in current interface |
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1187 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1188 assert(fd->is_static(), "interface field must be static"); |
1189 return intf1; | |
1190 } | |
1191 // search for field in direct superinterfaces | |
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1192 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1193 if (intf2 != NULL) return intf2; |
1194 } | |
1195 // otherwise field lookup fails | |
1196 return NULL; | |
1197 } | |
1198 | |
1199 | |
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1200 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1201 // search order according to newest JVM spec (5.4.3.2, p.167). |
1202 // 1) search for field in current klass | |
1203 if (find_local_field(name, sig, fd)) { | |
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1204 return const_cast<InstanceKlass*>(this); |
0 | 1205 } |
1206 // 2) search for field recursively in direct superinterfaces | |
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1207 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1208 if (intf != NULL) return intf; |
1209 } | |
1210 // 3) apply field lookup recursively if superclass exists | |
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1211 { Klass* supr = super(); |
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1212 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1213 } |
1214 // 4) otherwise field lookup fails | |
1215 return NULL; | |
1216 } | |
1217 | |
1218 | |
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1219 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1220 // search order according to newest JVM spec (5.4.3.2, p.167). |
1221 // 1) search for field in current klass | |
1222 if (find_local_field(name, sig, fd)) { | |
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1223 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1224 } |
1225 // 2) search for field recursively in direct superinterfaces | |
1226 if (is_static) { | |
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1227 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1228 if (intf != NULL) return intf; |
1229 } | |
1230 // 3) apply field lookup recursively if superclass exists | |
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1231 { Klass* supr = super(); |
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1232 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1233 } |
1234 // 4) otherwise field lookup fails | |
1235 return NULL; | |
1236 } | |
1237 | |
1238 | |
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1239 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1240 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1241 if (fs.offset() == offset) { |
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1242 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1243 if (fd->is_static() == is_static) return true; |
1244 } | |
1245 } | |
1246 return false; | |
1247 } | |
1248 | |
1249 | |
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1250 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1251 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1252 while (klass != NULL) { |
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1253 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1254 return true; |
1255 } | |
6983 | 1256 klass = klass->super(); |
0 | 1257 } |
1258 return false; | |
1259 } | |
1260 | |
1261 | |
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1262 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1263 int len = methods()->length(); |
1264 for (int index = 0; index < len; index++) { | |
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1265 Method* m = methods()->at(index); |
0 | 1266 assert(m->is_method(), "must be method"); |
1267 f(m); | |
1268 } | |
1269 } | |
1270 | |
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1271 |
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1272 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1273 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1274 if (fs.access_flags().is_static()) { | |
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1275 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1276 cl->do_field(&fd); |
1277 } | |
0 | 1278 } |
1279 } | |
1280 | |
1281 | |
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1282 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS) { |
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1283 instanceKlassHandle h_this(THREAD, this); |
0 | 1284 do_local_static_fields_impl(h_this, f, CHECK); |
1285 } | |
1286 | |
1287 | |
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1288 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS) { |
3938 | 1289 for (JavaFieldStream fs(this_oop()); !fs.done(); fs.next()) { |
1290 if (fs.access_flags().is_static()) { | |
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1291 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1292 f(&fd, CHECK); |
1293 } | |
0 | 1294 } |
1295 } | |
1296 | |
1297 | |
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1298 static int compare_fields_by_offset(int* a, int* b) { |
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1299 return a[0] - b[0]; |
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1300 } |
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1301 |
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1302 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1303 InstanceKlass* super = superklass(); |
0 | 1304 if (super != NULL) { |
1305 super->do_nonstatic_fields(cl); | |
1306 } | |
44
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1307 fieldDescriptor fd; |
3938 | 1308 int length = java_fields_count(); |
44
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1309 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1310 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1311 int j = 0; |
3938 | 1312 for (int i = 0; i < length; i += 1) { |
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1313 fd.reinitialize(this, i); |
44
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1314 if (!fd.is_static()) { |
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1315 fields_sorted[j + 0] = fd.offset(); |
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1316 fields_sorted[j + 1] = i; |
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1317 j += 2; |
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1318 } |
0 | 1319 } |
44
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1320 if (j > 0) { |
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1321 length = j; |
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1322 // _sort_Fn is defined in growableArray.hpp. |
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1323 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1324 for (int i = 0; i < length; i += 2) { |
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1325 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1326 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1327 cl->do_field(&fd); |
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1328 } |
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1329 } |
6197 | 1330 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1331 } |
1332 | |
1333 | |
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1334 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1335 if (array_klasses() != NULL) |
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1336 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1337 } |
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1338 |
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1339 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1340 if (array_klasses() != NULL) |
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1341 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1342 } |
1343 | |
1344 #ifdef ASSERT | |
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1345 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1346 int len = methods->length(); |
1347 for (int index = 0; index < len; index++) { | |
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1348 Method* m = methods->at(index); |
0 | 1349 assert(m->is_method(), "must be method"); |
1350 if (m->signature() == signature && m->name() == name) { | |
1351 return index; | |
1352 } | |
1353 } | |
1354 return -1; | |
1355 } | |
1356 #endif | |
1357 | |
6934 | 1358 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1359 int len = methods->length(); |
1360 // methods are sorted, so do binary search | |
1361 int l = 0; | |
1362 int h = len - 1; | |
1363 while (l <= h) { | |
1364 int mid = (l + h) >> 1; | |
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1365 Method* m = methods->at(mid); |
0 | 1366 assert(m->is_method(), "must be method"); |
1367 int res = m->name()->fast_compare(name); | |
1368 if (res == 0) { | |
6934 | 1369 return mid; |
0 | 1370 } else if (res < 0) { |
1371 l = mid + 1; | |
1372 } else { | |
1373 h = mid - 1; | |
1374 } | |
1375 } | |
6934 | 1376 return -1; |
1377 } | |
1378 | |
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1379 // find_method looks up the name/signature in the local methods array |
6934 | 1380 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
1381 return InstanceKlass::find_method(methods(), name, signature); | |
1382 } | |
1383 | |
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1384 // find_instance_method looks up the name/signature in the local methods array |
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1385 // and skips over static methods |
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1386 Method* InstanceKlass::find_instance_method( |
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1387 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1388 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1389 if (meth != NULL && meth->is_static()) { |
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1390 meth = NULL; |
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1391 } |
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1392 return meth; |
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1393 } |
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1394 |
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1395 // find_method looks up the name/signature in the local methods array |
6934 | 1396 Method* InstanceKlass::find_method( |
1397 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1398 int hit = find_method_index(methods, name, signature); |
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1399 return hit >= 0 ? methods->at(hit): NULL; |
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1400 } |
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1401 |
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1402 // Used directly for default_methods to find the index into the |
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1403 // default_vtable_indices, and indirectly by find_method |
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1404 // find_method_index looks in the local methods array to return the index |
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1405 // of the matching name/signature |
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1406 int InstanceKlass::find_method_index( |
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1407 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
6934 | 1408 int hit = binary_search(methods, name); |
1409 if (hit != -1) { | |
1410 Method* m = methods->at(hit); | |
1411 // Do linear search to find matching signature. First, quick check | |
1412 // for common case | |
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1413 if (m->signature() == signature) return hit; |
6934 | 1414 // search downwards through overloaded methods |
1415 int i; | |
1416 for (i = hit - 1; i >= 0; --i) { | |
1417 Method* m = methods->at(i); | |
1418 assert(m->is_method(), "must be method"); | |
1419 if (m->name() != name) break; | |
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1420 if (m->signature() == signature) return i; |
6934 | 1421 } |
1422 // search upwards | |
1423 for (i = hit + 1; i < methods->length(); ++i) { | |
1424 Method* m = methods->at(i); | |
1425 assert(m->is_method(), "must be method"); | |
1426 if (m->name() != name) break; | |
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1427 if (m->signature() == signature) return i; |
6934 | 1428 } |
1429 // not found | |
0 | 1430 #ifdef ASSERT |
6934 | 1431 int index = linear_search(methods, name, signature); |
1432 assert(index == -1, err_msg("binary search should have found entry %d", index)); | |
0 | 1433 #endif |
6934 | 1434 } |
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1435 return -1; |
0 | 1436 } |
6934 | 1437 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1438 return find_method_by_name(methods(), name, end); | |
1439 } | |
1440 | |
1441 int InstanceKlass::find_method_by_name( | |
1442 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1443 assert(end_ptr != NULL, "just checking"); | |
1444 int start = binary_search(methods, name); | |
1445 int end = start + 1; | |
1446 if (start != -1) { | |
1447 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1448 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1449 *end_ptr = end; | |
1450 return start; | |
1451 } | |
1452 return -1; | |
1453 } | |
1454 | |
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1455 // uncached_lookup_method searches both the local class methods array and all |
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1456 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1457 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const { |
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1458 Klass* klass = const_cast<InstanceKlass*>(this); |
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1459 bool dont_ignore_overpasses = true; // For the class being searched, find its overpasses. |
0 | 1460 while (klass != NULL) { |
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1461 Method* method = InstanceKlass::cast(klass)->find_method(name, signature); |
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1462 if ((method != NULL) && (dont_ignore_overpasses || !method->is_overpass())) { |
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1463 return method; |
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1464 } |
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1465 klass = InstanceKlass::cast(klass)->super(); |
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1466 dont_ignore_overpasses = false; // Ignore overpass methods in all superclasses. |
0 | 1467 } |
1468 return NULL; | |
1469 } | |
1470 | |
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1471 // lookup a method in the default methods list then in all transitive interfaces |
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1472 // Do NOT return private or static methods |
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1473 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1474 Symbol* signature) const { |
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1475 Method* m = NULL; |
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1476 if (default_methods() != NULL) { |
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|
1477 m = find_method(default_methods(), name, signature); |
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|
1478 } |
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|
1479 // Look up interfaces |
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|
1480 if (m == NULL) { |
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|
1481 m = lookup_method_in_all_interfaces(name, signature, false); |
12823
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|
1482 } |
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|
1483 return m; |
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|
1484 } |
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|
1485 |
0 | 1486 // lookup a method in all the interfaces that this class implements |
12318
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|
1487 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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|
1488 // They should only be found in the initial InterfaceMethodRef |
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1489 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
14221
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|
1490 Symbol* signature, |
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|
1491 bool skip_default_methods) const { |
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1492 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1493 int num_ifs = all_ifs->length(); |
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|
1494 InstanceKlass *ik = NULL; |
0 | 1495 for (int i = 0; i < num_ifs; i++) { |
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|
1496 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1497 Method* m = ik->lookup_method(name, signature); |
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|
1498 if (m != NULL && m->is_public() && !m->is_static() && |
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|
1499 (!skip_default_methods || !m->is_default_method())) { |
0 | 1500 return m; |
1501 } | |
1502 } | |
1503 return NULL; | |
1504 } | |
1505 | |
1506 /* jni_id_for_impl for jfieldIds only */ | |
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1507 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1508 MutexLocker ml(JfieldIdCreation_lock); |
1509 // Retry lookup after we got the lock | |
1510 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1511 if (probe == NULL) { | |
1512 // Slow case, allocate new static field identifier | |
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1513 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1514 this_oop->set_jni_ids(probe); |
1515 } | |
1516 return probe; | |
1517 } | |
1518 | |
1519 | |
1520 /* jni_id_for for jfieldIds only */ | |
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1521 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1522 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1523 if (probe == NULL) { | |
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1524 probe = jni_id_for_impl(this, offset); |
0 | 1525 } |
1526 return probe; | |
1527 } | |
1528 | |
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1529 u2 InstanceKlass::enclosing_method_data(int offset) { |
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|
1530 Array<jushort>* inner_class_list = inner_classes(); |
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|
1531 if (inner_class_list == NULL) { |
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|
1532 return 0; |
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|
1533 } |
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|
1534 int length = inner_class_list->length(); |
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|
1535 if (length % inner_class_next_offset == 0) { |
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|
1536 return 0; |
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|
1537 } else { |
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|
1538 int index = length - enclosing_method_attribute_size; |
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|
1539 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1540 return inner_class_list->at(index + offset); |
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|
1541 } |
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|
1542 } |
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|
1543 |
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1544 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
5967
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|
1545 u2 method_index) { |
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|
1546 Array<jushort>* inner_class_list = inner_classes(); |
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|
1547 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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|
1548 int length = inner_class_list->length(); |
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|
1549 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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|
1550 int index = length - enclosing_method_attribute_size; |
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|
1551 inner_class_list->at_put( |
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|
1552 index + enclosing_method_class_index_offset, class_index); |
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|
1553 inner_class_list->at_put( |
5967
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|
1554 index + enclosing_method_method_index_offset, method_index); |
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|
1555 } |
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|
1556 } |
0 | 1557 |
1558 // Lookup or create a jmethodID. | |
977
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|
1559 // This code is called by the VMThread and JavaThreads so the |
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|
1560 // locking has to be done very carefully to avoid deadlocks |
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|
1561 // and/or other cache consistency problems. |
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|
1562 // |
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|
1563 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1564 size_t idnum = (size_t)method_h->method_idnum(); |
1565 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1566 size_t length = 0; | |
1567 jmethodID id = NULL; | |
977
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|
1568 |
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|
1569 // We use a double-check locking idiom here because this cache is |
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|
1570 // performance sensitive. In the normal system, this cache only |
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|
1571 // transitions from NULL to non-NULL which is safe because we use |
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|
1572 // release_set_methods_jmethod_ids() to advertise the new cache. |
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|
1573 // A partially constructed cache should never be seen by a racing |
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|
1574 // thread. We also use release_store_ptr() to save a new jmethodID |
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|
1575 // in the cache so a partially constructed jmethodID should never be |
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|
1576 // seen either. Cache reads of existing jmethodIDs proceed without a |
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|
1577 // lock, but cache writes of a new jmethodID requires uniqueness and |
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|
1578 // creation of the cache itself requires no leaks so a lock is |
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|
1579 // generally acquired in those two cases. |
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|
1580 // |
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|
1581 // If the RedefineClasses() API has been used, then this cache can |
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|
1582 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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|
1583 // Cache creation requires no leaks and we require safety between all |
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|
1584 // cache accesses and freeing of the old cache so a lock is generally |
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|
1585 // acquired when the RedefineClasses() API has been used. |
0 | 1586 |
977
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|
1587 if (jmeths != NULL) { |
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|
1588 // the cache already exists |
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|
1589 if (!ik_h->idnum_can_increment()) { |
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|
1590 // the cache can't grow so we can just get the current values |
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|
1591 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1592 } else { |
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|
1593 // cache can grow so we have to be more careful |
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|
1594 if (Threads::number_of_threads() == 0 || |
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|
1595 SafepointSynchronize::is_at_safepoint()) { |
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|
1596 // we're single threaded or at a safepoint - no locking needed |
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|
1597 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1598 } else { |
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|
1599 MutexLocker ml(JmethodIdCreation_lock); |
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|
1600 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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|
1601 } |
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|
1602 } |
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|
1603 } |
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|
1604 // implied else: |
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|
1605 // we need to allocate a cache so default length and id values are good |
0 | 1606 |
977
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|
1607 if (jmeths == NULL || // no cache yet |
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|
1608 length <= idnum || // cache is too short |
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|
1609 id == NULL) { // cache doesn't contain entry |
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|
1610 |
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|
1611 // This function can be called by the VMThread so we have to do all |
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|
1612 // things that might block on a safepoint before grabbing the lock. |
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|
1613 // Otherwise, we can deadlock with the VMThread or have a cache |
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|
1614 // consistency issue. These vars keep track of what we might have |
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|
1615 // to free after the lock is dropped. |
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|
1616 jmethodID to_dealloc_id = NULL; |
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|
1617 jmethodID* to_dealloc_jmeths = NULL; |
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|
1618 |
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|
1619 // may not allocate new_jmeths or use it if we allocate it |
0 | 1620 jmethodID* new_jmeths = NULL; |
1621 if (length <= idnum) { | |
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1622 // allocate a new cache that might be used |
0 | 1623 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1624 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1625 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1626 // cache size is stored in element[0], other elements offset by one |
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1627 new_jmeths[0] = (jmethodID)size; |
0 | 1628 } |
1629 | |
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1630 // allocate a new jmethodID that might be used |
0 | 1631 jmethodID new_id = NULL; |
1632 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1633 // The method passed in is old (but not obsolete), we need to use the current version | |
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1634 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1635 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1636 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1637 } else { |
1638 // It is the current version of the method or an obsolete method, | |
1639 // use the version passed in | |
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1640 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1641 } |
1642 | |
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1643 if (Threads::number_of_threads() == 0 || |
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1644 SafepointSynchronize::is_at_safepoint()) { |
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1645 // we're single threaded or at a safepoint - no locking needed |
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1646 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1647 &to_dealloc_id, &to_dealloc_jmeths); |
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1648 } else { |
0 | 1649 MutexLocker ml(JmethodIdCreation_lock); |
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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 } |
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1653 |
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1654 // The lock has been dropped so we can free resources. |
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1655 // Free up either the old cache or the new cache if we allocated one. |
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1656 if (to_dealloc_jmeths != NULL) { |
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1657 FreeHeap(to_dealloc_jmeths); |
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1658 } |
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1659 // free up the new ID since it wasn't needed |
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1660 if (to_dealloc_id != NULL) { |
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1661 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1662 } |
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1663 } |
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1664 return id; |
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1665 } |
0 | 1666 |
49
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1667 |
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1668 // Common code to fetch the jmethodID from the cache or update the |
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1669 // cache with the new jmethodID. This function should never do anything |
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1670 // that causes the caller to go to a safepoint or we can deadlock with |
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1671 // the VMThread or have cache consistency issues. |
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1672 // |
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1673 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1674 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1675 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1676 jmethodID** to_dealloc_jmeths_p) { |
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1677 assert(new_id != NULL, "sanity check"); |
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1678 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1679 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1680 assert(Threads::number_of_threads() == 0 || |
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1681 SafepointSynchronize::is_at_safepoint() || |
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1682 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1683 |
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1684 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1685 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1686 jmethodID id = NULL; |
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1687 size_t length = 0; |
0 | 1688 |
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1689 if (jmeths == NULL || // no cache yet |
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1690 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1691 if (jmeths != NULL) { |
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1692 // copy any existing entries from the old cache |
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1693 for (size_t index = 0; index < length; index++) { |
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1694 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1695 } |
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1696 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1697 } |
49
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1698 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1699 } else { |
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1700 // fetch jmethodID (if any) from the existing cache |
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1701 id = jmeths[idnum+1]; |
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1702 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1703 } |
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1704 if (id == NULL) { |
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1705 // No matching jmethodID in the existing cache or we have a new |
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1706 // cache or we just grew the cache. This cache write is done here |
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1707 // by the first thread to win the foot race because a jmethodID |
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1708 // needs to be unique once it is generally available. |
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1709 id = new_id; |
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1710 |
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1711 // The jmethodID cache can be read while unlocked so we have to |
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1712 // make sure the new jmethodID is complete before installing it |
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1713 // in the cache. |
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1714 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1715 } else { |
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1716 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1717 } |
1718 return id; | |
1719 } | |
1720 | |
1721 | |
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1722 // Common code to get the jmethodID cache length and the jmethodID |
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1723 // value at index idnum if there is one. |
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1724 // |
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1725 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1726 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1727 assert(cache != NULL, "sanity check"); |
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1728 assert(length_p != NULL, "sanity check"); |
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1729 assert(id_p != NULL, "sanity check"); |
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1730 |
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1731 // cache size is stored in element[0], other elements offset by one |
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1732 *length_p = (size_t)cache[0]; |
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1733 if (*length_p <= idnum) { // cache is too short |
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1734 *id_p = NULL; |
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1735 } else { |
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1736 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1737 } |
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1738 } |
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1739 |
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1740 |
0 | 1741 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1742 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1743 size_t idnum = (size_t)method->method_idnum(); |
1744 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1745 size_t length; // length assigned as debugging crumb | |
1746 jmethodID id = NULL; | |
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1747 if (jmeths != NULL && // If there is a cache |
0 | 1748 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1749 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1750 } | |
1751 return id; | |
1752 } | |
1753 | |
1754 | |
1755 // | |
1756 // Walk the list of dependent nmethods searching for nmethods which | |
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1757 // are dependent on the changes that were passed in and mark them for |
0 | 1758 // deoptimization. Returns the number of nmethods found. |
1759 // | |
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1760 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1761 assert_locked_or_safepoint(CodeCache_lock); |
1762 int found = 0; | |
1763 nmethodBucket* b = _dependencies; | |
1764 while (b != NULL) { | |
1765 nmethod* nm = b->get_nmethod(); | |
1766 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1767 // the dependency list may contain nmethods which aren't alive. | |
1768 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1769 if (TraceDependencies) { | |
1770 ResourceMark rm; | |
1771 tty->print_cr("Marked for deoptimization"); | |
1772 tty->print_cr(" context = %s", this->external_name()); | |
1773 changes.print(); | |
1774 nm->print(); | |
1775 nm->print_dependencies(); | |
1776 } | |
1777 nm->mark_for_deoptimization(); | |
1778 found++; | |
1779 } | |
1780 b = b->next(); | |
1781 } | |
1782 return found; | |
1783 } | |
1784 | |
1785 | |
1786 // | |
1787 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1788 // It's possible that an nmethod has multiple dependencies on this klass | |
1789 // so a count is kept for each bucket to guarantee that creation and | |
1790 // deletion of dependencies is consistent. | |
1791 // | |
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1792 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1793 assert_locked_or_safepoint(CodeCache_lock); |
1794 nmethodBucket* b = _dependencies; | |
1795 nmethodBucket* last = NULL; | |
1796 while (b != NULL) { | |
1797 if (nm == b->get_nmethod()) { | |
1798 b->increment(); | |
1799 return; | |
1800 } | |
1801 b = b->next(); | |
1802 } | |
1803 _dependencies = new nmethodBucket(nm, _dependencies); | |
1804 } | |
1805 | |
1806 | |
1807 // | |
1808 // Decrement count of the nmethod in the dependency list and remove | |
1809 // the bucket competely when the count goes to 0. This method must | |
1810 // find a corresponding bucket otherwise there's a bug in the | |
1811 // recording of dependecies. | |
1812 // | |
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1813 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1814 assert_locked_or_safepoint(CodeCache_lock); |
1815 nmethodBucket* b = _dependencies; | |
1816 nmethodBucket* last = NULL; | |
1817 while (b != NULL) { | |
1818 if (nm == b->get_nmethod()) { | |
1819 if (b->decrement() == 0) { | |
1820 if (last == NULL) { | |
1821 _dependencies = b->next(); | |
1822 } else { | |
1823 last->set_next(b->next()); | |
1824 } | |
1825 delete b; | |
1826 } | |
1827 return; | |
1828 } | |
1829 last = b; | |
1830 b = b->next(); | |
1831 } | |
1832 #ifdef ASSERT | |
1833 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1834 nm->print(); | |
1835 #endif // ASSERT | |
1836 ShouldNotReachHere(); | |
1837 } | |
1838 | |
1839 | |
1840 #ifndef PRODUCT | |
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1841 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1842 nmethodBucket* b = _dependencies; |
1843 int idx = 0; | |
1844 while (b != NULL) { | |
1845 nmethod* nm = b->get_nmethod(); | |
1846 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1847 if (!verbose) { | |
1848 nm->print_on(tty, "nmethod"); | |
1849 tty->print_cr(" } "); | |
1850 } else { | |
1851 nm->print(); | |
1852 nm->print_dependencies(); | |
1853 tty->print_cr("--- } "); | |
1854 } | |
1855 b = b->next(); | |
1856 } | |
1857 } | |
1858 | |
1859 | |
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1860 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1861 nmethodBucket* b = _dependencies; |
1862 while (b != NULL) { | |
1863 if (nm == b->get_nmethod()) { | |
1864 return true; | |
1865 } | |
1866 b = b->next(); | |
1867 } | |
1868 return false; | |
1869 } | |
1870 #endif //PRODUCT | |
1871 | |
1872 | |
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1873 // Garbage collection |
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1874 |
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1875 #ifdef ASSERT |
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1876 template <class T> void assert_is_in(T *p) { |
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1877 T heap_oop = oopDesc::load_heap_oop(p); |
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1878 if (!oopDesc::is_null(heap_oop)) { |
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1879 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1880 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1881 } |
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1882 } |
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1883 template <class T> void assert_is_in_closed_subset(T *p) { |
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1884 T heap_oop = oopDesc::load_heap_oop(p); |
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1885 if (!oopDesc::is_null(heap_oop)) { |
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1886 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1887 assert(Universe::heap()->is_in_closed_subset(o), |
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1888 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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1889 } |
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1890 } |
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1891 template <class T> void assert_is_in_reserved(T *p) { |
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1892 T heap_oop = oopDesc::load_heap_oop(p); |
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1893 if (!oopDesc::is_null(heap_oop)) { |
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1894 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1895 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1896 } |
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1897 } |
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1898 template <class T> void assert_nothing(T *p) {} |
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1899 |
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1900 #else |
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1901 template <class T> void assert_is_in(T *p) {} |
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1902 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1903 template <class T> void assert_is_in_reserved(T *p) {} |
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1904 template <class T> void assert_nothing(T *p) {} |
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1905 #endif // ASSERT |
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1906 |
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1907 // |
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1908 // Macros that iterate over areas of oops which are specialized on type of |
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1909 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1910 // |
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1911 // Parameters are: |
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1912 // T - type of oop to point to (either oop or narrowOop) |
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1913 // start_p - starting pointer for region to iterate over |
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1914 // count - number of oops or narrowOops to iterate over |
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1915 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1916 // makes it more efficient to put in a macro rather than making |
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1917 // it a template function) |
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1918 // assert_fn - assert function which is template function because performance |
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1919 // doesn't matter when enabled. |
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1920 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1921 T, start_p, count, do_oop, \ |
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1922 assert_fn) \ |
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1923 { \ |
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1924 T* p = (T*)(start_p); \ |
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1925 T* const end = p + (count); \ |
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1926 while (p < end) { \ |
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1927 (assert_fn)(p); \ |
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1928 do_oop; \ |
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1929 ++p; \ |
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1930 } \ |
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1931 } |
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1932 |
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1933 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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1934 T, start_p, count, do_oop, \ |
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1935 assert_fn) \ |
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1936 { \ |
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1937 T* const start = (T*)(start_p); \ |
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1938 T* p = start + (count); \ |
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1939 while (start < p) { \ |
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1940 --p; \ |
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1941 (assert_fn)(p); \ |
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1942 do_oop; \ |
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1943 } \ |
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1944 } |
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1945 |
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1946 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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1947 T, start_p, count, low, high, \ |
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1948 do_oop, assert_fn) \ |
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1949 { \ |
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1950 T* const l = (T*)(low); \ |
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1951 T* const h = (T*)(high); \ |
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1952 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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1953 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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1954 "bounded region must be properly aligned"); \ |
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1955 T* p = (T*)(start_p); \ |
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1956 T* end = p + (count); \ |
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1957 if (p < l) p = l; \ |
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1958 if (end > h) end = h; \ |
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1959 while (p < end) { \ |
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1960 (assert_fn)(p); \ |
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1961 do_oop; \ |
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1962 ++p; \ |
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1963 } \ |
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1964 } |
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1965 |
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1966 |
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1967 // The following macros call specialized macros, passing either oop or |
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1968 // narrowOop as the specialization type. These test the UseCompressedOops |
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1969 // flag. |
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1970 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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1971 { \ |
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1972 /* Compute oopmap block range. The common case \ |
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1973 is nonstatic_oop_map_size == 1. */ \ |
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1974 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 1975 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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1976 if (UseCompressedOops) { \ |
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1977 while (map < end_map) { \ |
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1978 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 1979 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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1980 do_oop, assert_fn) \ |
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1981 ++map; \ |
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1982 } \ |
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1983 } else { \ |
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1984 while (map < end_map) { \ |
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1985 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 1986 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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1987 do_oop, assert_fn) \ |
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1988 ++map; \ |
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1989 } \ |
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1990 } \ |
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1991 } |
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1992 |
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1993 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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1994 { \ |
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1995 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 1996 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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1997 if (UseCompressedOops) { \ |
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1998 while (start_map < map) { \ |
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1999 --map; \ |
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2000 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2001 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2002 do_oop, assert_fn) \ |
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2003 } \ |
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2004 } else { \ |
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2005 while (start_map < map) { \ |
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2006 --map; \ |
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2007 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2008 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2009 do_oop, assert_fn) \ |
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2010 } \ |
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2011 } \ |
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2012 } |
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2013 |
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2014 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2015 assert_fn) \ |
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2016 { \ |
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2017 /* Compute oopmap block range. The common case is \ |
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2018 nonstatic_oop_map_size == 1, so we accept the \ |
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2019 usually non-existent extra overhead of examining \ |
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2020 all the maps. */ \ |
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2021 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2022 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2023 if (UseCompressedOops) { \ |
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2024 while (map < end_map) { \ |
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2025 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2026 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2027 low, high, \ |
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2028 do_oop, assert_fn) \ |
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2029 ++map; \ |
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2030 } \ |
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2031 } else { \ |
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2032 while (map < end_map) { \ |
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2033 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2034 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2035 low, high, \ |
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2036 do_oop, assert_fn) \ |
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2037 ++map; \ |
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2038 } \ |
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2039 } \ |
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2040 } |
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2041 |
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2042 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2043 assert(obj != NULL, "can't follow the content of NULL object"); |
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2044 MarkSweep::follow_klass(obj->klass()); |
113
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2045 InstanceKlass_OOP_MAP_ITERATE( \ |
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2046 obj, \ |
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2047 MarkSweep::mark_and_push(p), \ |
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2048 assert_is_in_closed_subset) |
0 | 2049 } |
2050 | |
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2051 #if INCLUDE_ALL_GCS |
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2052 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2053 oop obj) { |
113
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2054 assert(obj != NULL, "can't follow the content of NULL object"); |
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2055 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2056 // Only mark the header and let the scan of the meta-data mark |
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2057 // everything else. |
113
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2058 InstanceKlass_OOP_MAP_ITERATE( \ |
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2059 obj, \ |
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2060 PSParallelCompact::mark_and_push(cm, p), \ |
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2061 assert_is_in) |
0 | 2062 } |
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2063 #endif // INCLUDE_ALL_GCS |
0 | 2064 |
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2065 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2066 // applied to the klass ptr in the object header. |
2067 | |
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2068 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2069 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2070 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2071 "Inconsistency in do_metadata"); \ |
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2072 if (closure->do_metadata##nv_suffix()) |
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2073 |
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2074 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2075 \ |
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2076 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
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2077 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2078 /* header */ \ |
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2079 if_do_metadata_checked(closure, nv_suffix) { \ |
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2080 closure->do_klass##nv_suffix(obj->klass()); \ |
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2081 } \ |
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2082 InstanceKlass_OOP_MAP_ITERATE( \ |
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2083 obj, \ |
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2084 SpecializationStats:: \ |
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2085 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2086 (closure)->do_oop##nv_suffix(p), \ |
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2087 assert_is_in_closed_subset) \ |
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2088 return size_helper(); \ |
0 | 2089 } |
2090 | |
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2091 #if INCLUDE_ALL_GCS |
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2092 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2093 \ |
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2094 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
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2095 OopClosureType* closure) { \ |
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2096 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2097 /* header */ \ |
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2098 if_do_metadata_checked(closure, nv_suffix) { \ |
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2099 closure->do_klass##nv_suffix(obj->klass()); \ |
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2100 } \ |
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2101 /* instance variables */ \ |
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2102 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2103 obj, \ |
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2104 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2105 (closure)->do_oop##nv_suffix(p), \ |
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2106 assert_is_in_closed_subset) \ |
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2107 return size_helper(); \ |
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2108 } |
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2109 #endif // INCLUDE_ALL_GCS |
342
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2110 |
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2111 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2112 \ |
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2113 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2114 OopClosureType* closure, \ |
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2115 MemRegion mr) { \ |
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2116 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2117 if_do_metadata_checked(closure, nv_suffix) { \ |
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2118 if (mr.contains(obj)) { \ |
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2119 closure->do_klass##nv_suffix(obj->klass()); \ |
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2120 } \ |
113
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2121 } \ |
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2122 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2123 obj, mr.start(), mr.end(), \ |
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2124 (closure)->do_oop##nv_suffix(p), \ |
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2125 assert_is_in_closed_subset) \ |
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2126 return size_helper(); \ |
0 | 2127 } |
2128 | |
2129 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2130 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2131 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2132 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2133 #if INCLUDE_ALL_GCS |
342
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2134 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2135 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2136 #endif // INCLUDE_ALL_GCS |
0 | 2137 |
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2138 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2139 int size = size_helper(); |
113
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2140 InstanceKlass_OOP_MAP_ITERATE( \ |
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2141 obj, \ |
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2142 MarkSweep::adjust_pointer(p), \ |
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2143 assert_is_in) |
0 | 2144 return size; |
2145 } | |
2146 | |
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2147 #if INCLUDE_ALL_GCS |
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2148 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2149 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2150 obj, \ |
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2151 if (PSScavenge::should_scavenge(p)) { \ |
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2152 pm->claim_or_forward_depth(p); \ |
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2153 }, \ |
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2154 assert_nothing ) |
0 | 2155 } |
2156 | |
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2157 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2158 int size = size_helper(); |
113
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2159 InstanceKlass_OOP_MAP_ITERATE( \ |
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2160 obj, \ |
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2161 PSParallelCompact::adjust_pointer(p), \ |
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2162 assert_is_in) |
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2163 return size; |
0 | 2164 } |
2165 | |
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2166 #endif // INCLUDE_ALL_GCS |
0 | 2167 |
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2168 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2169 assert(is_loader_alive(is_alive), "this klass should be live"); |
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2170 if (is_interface()) { |
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2171 if (ClassUnloading) { |
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2172 Klass* impl = implementor(); |
5998
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2173 if (impl != NULL) { |
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2174 if (!impl->is_loader_alive(is_alive)) { |
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2175 // remove this guy |
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2176 Klass** klass = adr_implementor(); |
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2177 assert(klass != NULL, "null klass"); |
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2178 if (klass != NULL) { |
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2179 *klass = NULL; |
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2180 } |
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2181 } |
0 | 2182 } |
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2183 } |
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2184 } |
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2185 } |
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2186 |
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2187 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2188 for (int m = 0; m < methods()->length(); m++) { |
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2189 MethodData* mdo = methods()->at(m)->method_data(); |
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2190 if (mdo != NULL) { |
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2191 for (ProfileData* data = mdo->first_data(); |
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2192 mdo->is_valid(data); |
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2193 data = mdo->next_data(data)) { |
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2194 data->clean_weak_klass_links(is_alive); |
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2195 } |
13080 | 2196 ParametersTypeData* parameters = mdo->parameters_type_data(); |
2197 if (parameters != NULL) { | |
2198 parameters->clean_weak_klass_links(is_alive); | |
2199 } | |
0 | 2200 } |
2201 } | |
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2202 } |
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2203 |
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2204 |
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2205 static void remove_unshareable_in_class(Klass* k) { |
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2206 // remove klass's unshareable info |
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2207 k->remove_unshareable_info(); |
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2208 } |
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2209 |
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2210 void InstanceKlass::remove_unshareable_info() { |
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2211 Klass::remove_unshareable_info(); |
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2212 // Unlink the class |
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2213 if (is_linked()) { |
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2214 unlink_class(); |
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2215 } |
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2216 init_implementor(); |
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2217 |
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2218 constants()->remove_unshareable_info(); |
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2219 |
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2220 for (int i = 0; i < methods()->length(); i++) { |
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2221 Method* m = methods()->at(i); |
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2222 m->remove_unshareable_info(); |
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2223 } |
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2224 |
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2225 // do array classes also. |
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2226 array_klasses_do(remove_unshareable_in_class); |
0 | 2227 } |
2228 | |
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2229 void restore_unshareable_in_class(Klass* k, TRAPS) { |
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2230 k->restore_unshareable_info(CHECK); |
0 | 2231 } |
2232 | |
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2233 void InstanceKlass::restore_unshareable_info(TRAPS) { |
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2234 Klass::restore_unshareable_info(CHECK); |
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2235 instanceKlassHandle ik(THREAD, this); |
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2236 |
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2237 Array<Method*>* methods = ik->methods(); |
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2238 int num_methods = methods->length(); |
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2239 for (int index2 = 0; index2 < num_methods; ++index2) { |
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|
2240 methodHandle m(THREAD, methods->at(index2)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2241 m()->link_method(m, CHECK); |
6733
fa6e618671d7
7195867: NPG: SAJDI tests fail with sun.jvm.hotspot.types.WrongTypeException: No suitable match for type
coleenp
parents:
6725
diff
changeset
|
2242 // restore method's vtable by calling a virtual function |
fa6e618671d7
7195867: NPG: SAJDI tests fail with sun.jvm.hotspot.types.WrongTypeException: No suitable match for type
coleenp
parents:
6725
diff
changeset
|
2243 m->restore_vtable(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2244 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2245 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2246 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2247 // entries in this vtable for super classes so the CDS vtable might |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2248 // point to old or obsolete entries. RedefineClasses doesn't fix up |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2249 // vtables in the shared system dictionary, only the main one. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2250 // It also redefines the itable too so fix that too. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2251 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2252 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2253 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2254 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2255 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2256 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2257 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2258 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2259 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2260 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2261 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2262 static void clear_all_breakpoints(Method* m) { |
0 | 2263 m->clear_all_breakpoints(); |
2264 } | |
2265 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2266 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2267 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2268 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2269 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2270 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2271 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2272 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2273 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2274 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2275 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2276 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2277 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2278 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2279 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2280 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2281 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2282 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2283 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2284 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2285 // Can't release the constant pool here because the constant pool can be |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2286 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2287 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2288 |
0 | 2289 // Deallocate oop map cache |
2290 if (_oop_map_cache != NULL) { | |
2291 delete _oop_map_cache; | |
2292 _oop_map_cache = NULL; | |
2293 } | |
2294 | |
2295 // Deallocate JNI identifiers for jfieldIDs | |
2296 JNIid::deallocate(jni_ids()); | |
2297 set_jni_ids(NULL); | |
2298 | |
2299 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2300 if (jmeths != (jmethodID*)NULL) { | |
2301 release_set_methods_jmethod_ids(NULL); | |
2302 FreeHeap(jmeths); | |
2303 } | |
2304 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2305 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2306 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2307 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
|
2308 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
|
2309 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2310 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2311 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2312 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2313 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2314 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2315 |
0 | 2316 // release dependencies |
2317 nmethodBucket* b = _dependencies; | |
2318 _dependencies = NULL; | |
2319 while (b != NULL) { | |
2320 nmethodBucket* next = b->next(); | |
2321 delete b; | |
2322 b = next; | |
2323 } | |
2324 | |
2325 // Deallocate breakpoint records | |
2326 if (breakpoints() != 0x0) { | |
2327 methods_do(clear_all_breakpoints); | |
2328 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2329 } | |
2330 | |
2331 // deallocate information about previous versions | |
2332 if (_previous_versions != NULL) { | |
2333 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2334 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2335 delete pv_node; | |
2336 } | |
2337 delete _previous_versions; | |
2338 _previous_versions = NULL; | |
2339 } | |
2340 | |
2341 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2342 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2343 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2344 _cached_class_file = NULL; |
0 | 2345 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2346 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2347 // 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
|
2348 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2349 // 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
|
2350 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2351 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
|
2352 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
|
2353 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2354 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2355 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2356 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2357 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 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
|
2359 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2360 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2361 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2362 // 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
|
2363 // 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
|
2364 // 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
|
2365 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2366 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2367 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
|
2368 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2369 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2370 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2371 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2372 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2373 } |
0 | 2374 } |
2375 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2377 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
|
2378 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2379 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2380 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2381 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2382 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2383 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2384 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2385 // 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
|
2386 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2387 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2388 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
|
2389 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2390 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2391 } |
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 // Get the internal name as a c string |
0 | 2394 const char* src = (const char*) (name()->as_C_string()); |
2395 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2396 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2397 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
|
2398 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2399 // Add L as type indicator |
0 | 2400 int dest_index = 0; |
2401 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2402 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2403 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
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diff
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|
2404 for (int src_index = 0; src_index < src_length; ) { |
0 | 2405 dest[dest_index++] = src[src_index++]; |
2406 } | |
12995
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|
2407 |
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|
2408 // If we have a hash, append it |
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diff
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|
2409 for (int hash_index = 0; hash_index < hash_len; ) { |
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diff
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|
2410 dest[dest_index++] = hash_buf[hash_index++]; |
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diff
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|
2411 } |
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diff
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|
2412 |
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|
2413 // Add the semicolon and the NULL |
0 | 2414 dest[dest_index++] = ';'; |
2415 dest[dest_index] = '\0'; | |
2416 return dest; | |
2417 } | |
2418 | |
2419 // different verisons of is_same_class_package | |
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|
2420 bool InstanceKlass::is_same_class_package(Klass* class2) { |
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2421 Klass* class1 = this; |
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|
2422 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2423 Symbol* classname1 = class1->name(); |
2424 | |
2425 if (class2->oop_is_objArray()) { | |
6831
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6735
diff
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|
2426 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2427 } |
2428 oop classloader2; | |
6983 | 2429 if (class2->oop_is_instance()) { |
6725
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2430 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2431 } else { |
6983 | 2432 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2433 classloader2 = NULL; |
2434 } | |
6983 | 2435 Symbol* classname2 = class2->name(); |
0 | 2436 |
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2437 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2438 classloader2, classname2); |
2439 } | |
2440 | |
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|
2441 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
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6964458: Reimplement class meta-data storage to use native memory
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|
2442 Klass* class1 = this; |
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|
2443 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2444 Symbol* classname1 = class1->name(); |
0 | 2445 |
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|
2446 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2447 classloader2, classname2); |
2448 } | |
2449 | |
2450 // return true if two classes are in the same package, classloader | |
2451 // and classname information is enough to determine a class's package | |
6725
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|
2452 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2453 oop class_loader2, Symbol* class_name2) { |
0 | 2454 if (class_loader1 != class_loader2) { |
2455 return false; | |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2456 } else if (class_name1 == class_name2) { |
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|
2457 return true; // skip painful bytewise comparison |
0 | 2458 } else { |
2459 ResourceMark rm; | |
2460 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2461 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2462 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2463 // Otherwise, we just compare jbyte values between the strings. | |
2177
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diff
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|
2464 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2465 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
2466 |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2467 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2468 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2469 |
2470 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2471 // One of the two doesn't have a package. Only return true | |
2472 // if the other one also doesn't have a package. | |
2473 return last_slash1 == last_slash2; | |
2474 } else { | |
2475 // Skip over '['s | |
2476 if (*name1 == '[') { | |
2477 do { | |
2478 name1++; | |
2479 } while (*name1 == '['); | |
2480 if (*name1 != 'L') { | |
2481 // Something is terribly wrong. Shouldn't be here. | |
2482 return false; | |
2483 } | |
2484 } | |
2485 if (*name2 == '[') { | |
2486 do { | |
2487 name2++; | |
2488 } while (*name2 == '['); | |
2489 if (*name2 != 'L') { | |
2490 // Something is terribly wrong. Shouldn't be here. | |
2491 return false; | |
2492 } | |
2493 } | |
2494 | |
2495 // Check that package part is identical | |
2496 int length1 = last_slash1 - name1; | |
2497 int length2 = last_slash2 - name2; | |
2498 | |
2499 return UTF8::equal(name1, length1, name2, length2); | |
2500 } | |
2501 } | |
2502 } | |
2503 | |
652
4aaa9f5e02a8
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acorn
parents:
605
diff
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|
2504 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
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605
diff
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|
2505 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
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acorn
parents:
605
diff
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|
2506 // Assumes name-signature match |
6725
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|
2507 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
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|
2508 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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|
2509 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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diff
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|
2510 // Private methods can not be overridden |
4aaa9f5e02a8
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605
diff
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|
2511 if (super_method->is_private()) { |
4aaa9f5e02a8
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parents:
605
diff
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|
2512 return false; |
4aaa9f5e02a8
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acorn
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605
diff
changeset
|
2513 } |
4aaa9f5e02a8
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parents:
605
diff
changeset
|
2514 // If super method is accessible, then override |
4aaa9f5e02a8
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acorn
parents:
605
diff
changeset
|
2515 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2516 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2517 return true; |
4aaa9f5e02a8
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acorn
parents:
605
diff
changeset
|
2518 } |
4aaa9f5e02a8
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parents:
605
diff
changeset
|
2519 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2520 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
changeset
|
2521 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
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parents:
605
diff
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|
2522 } |
0 | 2523 |
665
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6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2524 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2525 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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1972
diff
changeset
|
2526 Symbol*& simple_name_result, TRAPS) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2527 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2528 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2529 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2530 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2531 // tell if two classes have the same enclosing class (at package level) |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2532 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2533 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2534 if (class2_oop == class1()) return true; |
6983 | 2535 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2536 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2537 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2538 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2539 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2540 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2541 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2542 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2543 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2544 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2545 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2546 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2547 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2548 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
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1039
diff
changeset
|
2549 bool ignore_inner_is_member; |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2550 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
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933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
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1039
diff
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|
2551 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2552 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2553 if (next == class2()) return true; |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2554 outer1 = instanceKlassHandle(THREAD, next); |
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6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2555 } |
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diff
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|
2556 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2557 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2558 instanceKlassHandle outer2 = class2; |
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2559 for (;;) { |
1126
933a3e806ce6
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xlu
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1039
diff
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|
2560 bool ignore_inner_is_member; |
6725
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coleenp
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|
2561 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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1039
diff
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|
2562 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2563 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2564 // 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
|
2565 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2566 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2567 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2568 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2569 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2570 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2571 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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parents:
605
diff
changeset
|
2572 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2573 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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|
2574 |
0 | 2575 |
6725
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coleenp
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6266
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|
2576 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2577 jint access = access_flags().as_int(); |
2578 | |
2579 // But check if it happens to be member class. | |
6725
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coleenp
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6266
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|
2580 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
changeset
|
2581 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2582 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
|
2583 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
|
2584 // 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
|
2585 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2586 if (ioff == 0) continue; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2587 |
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|
2588 // only look at classes that are already loaded |
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|
2589 // since we are looking for the flags for our self. |
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|
2590 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
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2591 if ((ik->name() == inner_name)) { |
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|
2592 // This is really a member class. |
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|
2593 access = iter.inner_access_flags(); |
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|
2594 break; |
0 | 2595 } |
2596 } | |
2597 // Remember to strip ACC_SUPER bit | |
2598 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2599 } | |
2600 | |
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2601 jint InstanceKlass::jvmti_class_status() const { |
0 | 2602 jint result = 0; |
2603 | |
2604 if (is_linked()) { | |
2605 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2606 } | |
2607 | |
2608 if (is_initialized()) { | |
2609 assert(is_linked(), "Class status is not consistent"); | |
2610 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2611 } | |
2612 if (is_in_error_state()) { | |
2613 result |= JVMTI_CLASS_STATUS_ERROR; | |
2614 } | |
2615 return result; | |
2616 } | |
2617 | |
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2618 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2619 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2620 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2621 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2622 / itableOffsetEntry::size(); | |
2623 | |
2624 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2625 // If the interface isn't implemented by the receiver class, |
0 | 2626 // the VM should throw IncompatibleClassChangeError. |
2627 if (cnt >= nof_interfaces) { | |
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2628 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2629 } |
2630 | |
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2631 Klass* ik = ioe->interface_klass(); |
0 | 2632 if (ik == holder) break; |
2633 } | |
2634 | |
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2635 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2636 Method* m = ime[index].method(); |
0 | 2637 if (m == NULL) { |
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2638 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2639 } |
2640 return m; | |
2641 } | |
2642 | |
12823
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|
2643 |
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2644 #if INCLUDE_JVMTI |
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|
2645 // update default_methods for redefineclasses for methods that are |
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2646 // not yet in the vtable due to concurrent subclass define and superinterface |
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|
2647 // redefinition |
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|
2648 // Note: those in the vtable, should have been updated via adjust_method_entries |
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2649 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
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2650 int methods_length, bool* trace_name_printed) { |
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|
2651 // search the default_methods for uses of either obsolete or EMCP methods |
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|
2652 if (default_methods() != NULL) { |
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|
2653 for (int j = 0; j < methods_length; j++) { |
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|
2654 Method* old_method = old_methods[j]; |
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|
2655 Method* new_method = new_methods[j]; |
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|
2656 |
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|
2657 for (int index = 0; index < default_methods()->length(); index ++) { |
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|
2658 if (default_methods()->at(index) == old_method) { |
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|
2659 default_methods()->at_put(index, new_method); |
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|
2660 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
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|
2661 if (!(*trace_name_printed)) { |
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|
2662 // RC_TRACE_MESG macro has an embedded ResourceMark |
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|
2663 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
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|
2664 external_name(), |
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|
2665 old_method->method_holder()->external_name())); |
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|
2666 *trace_name_printed = true; |
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|
2667 } |
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|
2668 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
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|
2669 new_method->name()->as_C_string(), |
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|
2670 new_method->signature()->as_C_string())); |
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|
2671 } |
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|
2672 } |
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|
2673 } |
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diff
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|
2674 } |
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diff
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|
2675 } |
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|
2676 } |
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|
2677 #endif // INCLUDE_JVMTI |
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|
2678 |
0 | 2679 // On-stack replacement stuff |
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|
2680 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2681 // only one compilation can be active |
2682 NEEDS_CLEANUP | |
2683 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2684 OsrList_lock->lock_without_safepoint_check(); | |
2685 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
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|
2686 n->set_osr_link(osr_nmethods_head()); |
0 | 2687 set_osr_nmethods_head(n); |
1783 | 2688 // Raise the highest osr level if necessary |
2689 if (TieredCompilation) { | |
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2690 Method* m = n->method(); |
1783 | 2691 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2692 } | |
0 | 2693 // Remember to unlock again |
2694 OsrList_lock->unlock(); | |
1783 | 2695 |
2696 // Get rid of the osr methods for the same bci that have lower levels. | |
2697 if (TieredCompilation) { | |
2698 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2699 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2700 if (inv != NULL && inv->is_in_use()) { | |
2701 inv->make_not_entrant(); | |
2702 } | |
2703 } | |
2704 } | |
0 | 2705 } |
2706 | |
2707 | |
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2708 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2709 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2710 OsrList_lock->lock_without_safepoint_check(); | |
2711 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2712 nmethod* last = NULL; | |
2713 nmethod* cur = osr_nmethods_head(); | |
1783 | 2714 int max_level = CompLevel_none; // Find the max comp level excluding n |
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2715 Method* m = n->method(); |
0 | 2716 // Search for match |
2717 while(cur != NULL && cur != n) { | |
1783 | 2718 if (TieredCompilation) { |
2719 // Find max level before n | |
2720 max_level = MAX2(max_level, cur->comp_level()); | |
2721 } | |
0 | 2722 last = cur; |
989
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|
2723 cur = cur->osr_link(); |
0 | 2724 } |
1783 | 2725 nmethod* next = NULL; |
0 | 2726 if (cur == n) { |
1783 | 2727 next = cur->osr_link(); |
0 | 2728 if (last == NULL) { |
2729 // Remove first element | |
1783 | 2730 set_osr_nmethods_head(next); |
0 | 2731 } else { |
1783 | 2732 last->set_osr_link(next); |
0 | 2733 } |
2734 } | |
989
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|
2735 n->set_osr_link(NULL); |
1783 | 2736 if (TieredCompilation) { |
2737 cur = next; | |
2738 while (cur != NULL) { | |
2739 // Find max level after n | |
2740 max_level = MAX2(max_level, cur->comp_level()); | |
2741 cur = cur->osr_link(); | |
2742 } | |
2743 m->set_highest_osr_comp_level(max_level); | |
2744 } | |
0 | 2745 // Remember to unlock again |
2746 OsrList_lock->unlock(); | |
2747 } | |
2748 | |
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92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
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10152
diff
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|
2749 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2750 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2751 OsrList_lock->lock_without_safepoint_check(); | |
2752 nmethod* osr = osr_nmethods_head(); | |
1783 | 2753 nmethod* best = NULL; |
0 | 2754 while (osr != NULL) { |
2755 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2756 // There can be a time when a c1 osr method exists but we are waiting |
2757 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2758 // the c1 version and only be able to find the c2 version. However | |
2759 // while we overflow in the c1 code at back branches we don't want to | |
2760 // try and switch to the same code as we are already running | |
2761 | |
0 | 2762 if (osr->method() == m && |
2763 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2764 if (match_level) { |
2765 if (osr->comp_level() == comp_level) { | |
2766 // Found a match - return it. | |
2767 OsrList_lock->unlock(); | |
2768 return osr; | |
2769 } | |
2770 } else { | |
2771 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2772 if (osr->comp_level() == CompLevel_highest_tier) { | |
2773 // Found the best possible - return it. | |
2774 OsrList_lock->unlock(); | |
2775 return osr; | |
2776 } | |
2777 best = osr; | |
2778 } | |
2779 } | |
0 | 2780 } |
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|
2781 osr = osr->osr_link(); |
0 | 2782 } |
2783 OsrList_lock->unlock(); | |
1783 | 2784 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2785 return best; | |
2786 } | |
0 | 2787 return NULL; |
2788 } | |
2789 | |
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|
2790 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
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|
2791 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
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|
2792 MutexLocker ml(MemberNameTable_lock); |
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|
2793 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
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|
2794 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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|
2795 |
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|
2796 if (_member_names == NULL) { |
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2797 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
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|
2798 } |
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|
2799 _member_names->add_member_name(index, mem_name_wref); |
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|
2800 } |
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|
2801 |
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|
2802 oop InstanceKlass::get_member_name(int index) { |
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|
2803 MutexLocker ml(MemberNameTable_lock); |
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|
2804 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
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|
2805 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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|
2806 |
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2807 if (_member_names == NULL) { |
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|
2808 return NULL; |
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2809 } |
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|
2810 oop mem_name =_member_names->get_member_name(index); |
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|
2811 return mem_name; |
10133
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2812 } |
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2813 |
0 | 2814 // ----------------------------------------------------------------------------------------------------- |
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2815 // Printing |
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2816 |
0 | 2817 #ifndef PRODUCT |
2818 | |
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2819 #define BULLET " - " |
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2820 |
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2821 static const char* state_names[] = { |
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2822 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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2823 }; |
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2824 |
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2825 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
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2826 for (int i = 0; i < len; i++) { |
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2827 intptr_t e = start[i]; |
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2828 st->print("%d : " INTPTR_FORMAT, i, e); |
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2829 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
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2830 st->print(" "); |
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2831 ((Metadata*)e)->print_value_on(st); |
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2832 } |
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2833 st->cr(); |
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2834 } |
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2835 } |
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2836 |
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2837 void InstanceKlass::print_on(outputStream* st) const { |
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2838 assert(is_klass(), "must be klass"); |
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2839 Klass::print_on(st); |
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2840 |
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2841 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
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2842 st->print(BULLET"klass size: %d", size()); st->cr(); |
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2843 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
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2844 st->print(BULLET"state: "); st->print_cr(state_names[_init_state]); |
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2845 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
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2846 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
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2847 st->print(BULLET"sub: "); |
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2848 Klass* sub = subklass(); |
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2849 int n; |
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2850 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
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2851 if (n < MaxSubklassPrintSize) { |
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2852 sub->print_value_on(st); |
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2853 st->print(" "); |
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2854 } |
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2855 } |
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2856 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
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2857 st->cr(); |
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2858 |
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2859 if (is_interface()) { |
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2860 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
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2861 if (nof_implementors() == 1) { |
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2862 st->print_cr(BULLET"implementor: "); |
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2863 st->print(" "); |
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2864 implementor()->print_value_on(st); |
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2865 st->cr(); |
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2866 } |
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2867 } |
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2868 |
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2869 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
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2870 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
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2871 if (Verbose || WizardMode) { |
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2872 Array<Method*>* method_array = methods(); |
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2873 for (int i = 0; i < method_array->length(); i++) { |
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2874 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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2875 } |
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2876 } |
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2877 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
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2878 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
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2879 if (Verbose && default_methods() != NULL) { |
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2880 Array<Method*>* method_array = default_methods(); |
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2881 for (int i = 0; i < method_array->length(); i++) { |
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2882 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
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2883 } |
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2884 } |
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2885 if (default_vtable_indices() != NULL) { |
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2886 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
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2887 } |
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2888 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
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2889 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
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2890 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
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2891 if (class_loader_data() != NULL) { |
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2892 st->print(BULLET"class loader data: "); |
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2893 class_loader_data()->print_value_on(st); |
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2894 st->cr(); |
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2895 } |
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2896 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
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2897 if (source_file_name() != NULL) { |
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2898 st->print(BULLET"source file: "); |
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2899 source_file_name()->print_value_on(st); |
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2900 st->cr(); |
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2901 } |
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2902 if (source_debug_extension() != NULL) { |
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2903 st->print(BULLET"source debug extension: "); |
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2904 st->print("%s", source_debug_extension()); |
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2905 st->cr(); |
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2906 } |
8031 | 2907 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
2908 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
2909 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
2910 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
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2911 { |
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2912 bool have_pv = false; |
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2913 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
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2914 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
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2915 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
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2916 if (!have_pv) |
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2917 st->print(BULLET"previous version: "); |
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2918 have_pv = true; |
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2919 pv_node->prev_constant_pool()->print_value_on(st); |
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2920 } |
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2921 if (have_pv) st->cr(); |
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2922 } // pvw is cleaned up |
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2923 |
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2924 if (generic_signature() != NULL) { |
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2925 st->print(BULLET"generic signature: "); |
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2926 generic_signature()->print_value_on(st); |
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2927 st->cr(); |
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2928 } |
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2929 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
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2930 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
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2931 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
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2932 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
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2933 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
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2934 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
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changeset
|
2935 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2936 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2937 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2938 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2939 FieldPrinter print_nonstatic_field(st); |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2940 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
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|
2941 |
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6964458: Reimplement class meta-data storage to use native memory
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|
2942 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2943 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2944 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2945 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2946 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
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coleenp
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diff
changeset
|
2947 map++; |
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diff
changeset
|
2948 } |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2949 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2950 } |
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diff
changeset
|
2951 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2952 #endif //PRODUCT |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2953 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2954 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2955 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
|
2956 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2957 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2958 } |
da91efe96a93
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|
2959 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2960 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2961 |
0 | 2962 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2963 _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
|
2964 if (_obj == NULL) { |
0 | 2965 fd->print_on(_st); |
2966 _st->cr(); | |
2967 } else { | |
2968 fd->print_on_for(_st, _obj); | |
2969 _st->cr(); | |
2970 } | |
2971 } | |
2972 | |
2973 | |
6725
da91efe96a93
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coleenp
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changeset
|
2974 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 2975 Klass::oop_print_on(obj, st); |
2976 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2977 if (this == SystemDictionary::String_klass()) { |
0 | 2978 typeArrayOop value = java_lang_String::value(obj); |
2979 juint offset = java_lang_String::offset(obj); | |
2980 juint length = java_lang_String::length(obj); | |
2981 if (value != NULL && | |
2982 value->is_typeArray() && | |
2983 offset <= (juint) value->length() && | |
2984 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2985 st->print(BULLET"string: "); |
0 | 2986 Handle h_obj(obj); |
2987 java_lang_String::print(h_obj, st); | |
2988 st->cr(); | |
2989 if (!WizardMode) return; // that is enough | |
2990 } | |
2991 } | |
2992 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2993 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2994 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2995 do_nonstatic_fields(&print_field); |
0 | 2996 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2997 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2998 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
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diff
changeset
|
2999 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
3000 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3001 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3002 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3003 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3004 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3005 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3006 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 array_klass->print_value_on_maybe_null(st); |
0 | 3008 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3009 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
|
3010 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3011 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3013 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
|
3014 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3015 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3016 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3017 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3018 st->cr(); |
0 | 3019 } |
3020 } | |
3021 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3022 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3023 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3024 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3025 st->print("a "); |
3026 name()->print_value_on(st); | |
3027 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3028 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3029 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3030 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3031 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3032 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3033 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3034 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3035 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3036 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3038 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3039 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3040 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3041 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3042 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3043 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3044 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3045 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3046 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3047 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3048 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3049 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3050 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3051 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3052 } 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
|
3053 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
|
3054 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3055 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3056 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3057 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3058 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3059 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
|
3060 if (vmtarget != NULL) { |
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 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3063 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3064 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
|
3065 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3066 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
|
3067 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3068 } |
0 | 3069 } |
3070 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
3071 const char* InstanceKlass::internal_name() const { |
0 | 3072 return external_name(); |
3073 } | |
3074 | |
7956 | 3075 #if INCLUDE_SERVICES |
3076 // Size Statistics | |
3077 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3078 Klass::collect_statistics(sz); | |
3079 | |
3080 sz->_inst_size = HeapWordSize * size_helper(); | |
3081 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3082 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3083 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3084 ((is_interface() || is_anonymous()) ? | |
3085 align_object_offset(nonstatic_oop_map_size()) : | |
3086 nonstatic_oop_map_size()); | |
3087 | |
3088 int n = 0; | |
3089 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3090 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3091 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3092 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3093 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3094 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3095 sz->_ro_bytes += n; | |
3096 | |
3097 const ConstantPool* cp = constants(); | |
3098 if (cp) { | |
3099 cp->collect_statistics(sz); | |
3100 } | |
3101 | |
3102 const Annotations* anno = annotations(); | |
3103 if (anno) { | |
3104 anno->collect_statistics(sz); | |
3105 } | |
3106 | |
3107 const Array<Method*>* methods_array = methods(); | |
3108 if (methods()) { | |
3109 for (int i = 0; i < methods_array->length(); i++) { | |
3110 Method* method = methods_array->at(i); | |
3111 if (method) { | |
3112 sz->_method_count ++; | |
3113 method->collect_statistics(sz); | |
3114 } | |
3115 } | |
3116 } | |
3117 } | |
3118 #endif // INCLUDE_SERVICES | |
3119 | |
0 | 3120 // Verification |
3121 | |
3122 class VerifyFieldClosure: public OopClosure { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3123 protected: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3124 template <class T> void do_oop_work(T* p) { |
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3125 oop obj = oopDesc::load_decode_heap_oop(p); |
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3126 if (!obj->is_oop_or_null()) { |
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3127 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3128 Universe::print(); |
3129 guarantee(false, "boom"); | |
3130 } | |
3131 } | |
113
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|
3132 public: |
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|
3133 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3134 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3135 }; |
3136 | |
14378
48314d596a04
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|
3137 void InstanceKlass::verify_on(outputStream* st) { |
6725
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3138 #ifndef PRODUCT |
11034 | 3139 // Avoid redundant verifies, this really should be in product. |
6725
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3140 if (_verify_count == Universe::verify_count()) return; |
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3141 _verify_count = Universe::verify_count(); |
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3142 #endif |
11034 | 3143 |
3144 // Verify Klass | |
14378
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|
3145 Klass::verify_on(st); |
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|
3146 |
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|
3147 // Verify that klass is present in ClassLoaderData |
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3148 guarantee(class_loader_data()->contains_klass(this), |
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|
3149 "this class isn't found in class loader data"); |
6725
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|
3150 |
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3151 // Verify vtables |
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|
3152 if (is_linked()) { |
11034 | 3153 ResourceMark rm; |
6725
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3154 // $$$ This used to be done only for m/s collections. Doing it |
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3155 // always seemed a valid generalization. (DLD -- 6/00) |
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3156 vtable()->verify(st); |
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|
3157 } |
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|
3158 |
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3159 // Verify first subklass |
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3160 if (subklass_oop() != NULL) { |
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3161 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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|
3162 } |
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|
3163 |
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3164 // Verify siblings |
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|
3165 Klass* super = this->super(); |
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3166 Klass* sib = next_sibling(); |
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|
3167 if (sib != NULL) { |
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|
3168 if (sib == this) { |
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3169 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3170 } |
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|
3171 |
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3172 guarantee(sib->is_klass(), "should be klass"); |
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3173 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3174 } |
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|
3175 |
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|
3176 // Verify implementor fields |
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|
3177 Klass* im = implementor(); |
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|
3178 if (im != NULL) { |
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|
3179 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3180 guarantee(im->is_klass(), "should be klass"); |
6983 | 3181 guarantee(!im->is_interface() || im == this, |
6725
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|
3182 "implementors cannot be interfaces"); |
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|
3183 } |
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|
3184 |
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3185 // Verify local interfaces |
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|
3186 if (local_interfaces()) { |
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|
3187 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3188 for (int j = 0; j < local_interfaces->length(); j++) { |
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3189 Klass* e = local_interfaces->at(j); |
6983 | 3190 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3191 } |
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|
3192 } |
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|
3193 |
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|
3194 // Verify transitive interfaces |
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|
3195 if (transitive_interfaces() != NULL) { |
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|
3196 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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|
3197 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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|
3198 Klass* e = transitive_interfaces->at(j); |
6983 | 3199 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3200 } |
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|
3201 } |
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|
3202 |
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|
3203 // Verify methods |
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|
3204 if (methods() != NULL) { |
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|
3205 Array<Method*>* methods = this->methods(); |
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|
3206 for (int j = 0; j < methods->length(); j++) { |
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|
3207 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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|
3208 } |
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|
3209 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3210 Method* m1 = methods->at(j); |
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|
3211 Method* m2 = methods->at(j + 1); |
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|
3212 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3213 } |
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|
3214 } |
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|
3215 |
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|
3216 // Verify method ordering |
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|
3217 if (method_ordering() != NULL) { |
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|
3218 Array<int>* method_ordering = this->method_ordering(); |
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|
3219 int length = method_ordering->length(); |
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|
3220 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
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8719
diff
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|
3221 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
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|
3222 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3223 jlong sum = 0; |
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|
3224 for (int j = 0; j < length; j++) { |
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|
3225 int original_index = method_ordering->at(j); |
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|
3226 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3227 guarantee(original_index < length, "invalid method ordering index"); |
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|
3228 sum += original_index; |
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|
3229 } |
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|
3230 // Verify sum of indices 0,1,...,length-1 |
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|
3231 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3232 } else { |
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|
3233 guarantee(length == 0, "invalid method ordering length"); |
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|
3234 } |
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|
3235 } |
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|
3236 |
12823
ac9cb1d5a202
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12811
diff
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|
3237 // Verify default methods |
ac9cb1d5a202
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diff
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|
3238 if (default_methods() != NULL) { |
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|
3239 Array<Method*>* methods = this->default_methods(); |
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|
3240 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
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diff
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|
3241 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3242 } |
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acorn
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12811
diff
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|
3243 for (int j = 0; j < methods->length() - 1; j++) { |
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acorn
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12811
diff
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|
3244 Method* m1 = methods->at(j); |
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diff
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|
3245 Method* m2 = methods->at(j + 1); |
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diff
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|
3246 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3247 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3248 } |
ac9cb1d5a202
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acorn
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12811
diff
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|
3249 |
6725
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|
3250 // Verify JNI static field identifiers |
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|
3251 if (jni_ids() != NULL) { |
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|
3252 jni_ids()->verify(this); |
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|
3253 } |
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|
3254 |
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|
3255 // Verify other fields |
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|
3256 if (array_klasses() != NULL) { |
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|
3257 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3258 } |
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3259 if (constants() != NULL) { |
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3260 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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3261 } |
8693
872b3feace55
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3262 const Klass* host = host_klass(); |
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3263 if (host != NULL) { |
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|
3264 guarantee(host->is_klass(), "should be klass"); |
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3265 } |
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3266 } |
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3267 |
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3268 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3269 Klass::oop_verify_on(obj, st); |
3270 VerifyFieldClosure blk; | |
6725
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3271 obj->oop_iterate_no_header(&blk); |
0 | 3272 } |
3273 | |
6725
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3274 |
113
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3275 // JNIid class for jfieldIDs only |
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3276 // Note to reviewers: |
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3277 // These JNI functions are just moved over to column 1 and not changed |
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3278 // in the compressed oops workspace. |
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3279 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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3280 _holder = holder; |
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3281 _offset = offset; |
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3282 _next = next; |
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3283 debug_only(_is_static_field_id = false;) |
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3284 } |
0 | 3285 |
3286 | |
113
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3287 JNIid* JNIid::find(int offset) { |
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3288 JNIid* current = this; |
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3289 while (current != NULL) { |
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3290 if (current->offset() == offset) return current; |
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3291 current = current->next(); |
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|
3292 } |
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|
3293 return NULL; |
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3294 } |
0 | 3295 |
3296 void JNIid::deallocate(JNIid* current) { | |
113
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3297 while (current != NULL) { |
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3298 JNIid* next = current->next(); |
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3299 delete current; |
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|
3300 current = next; |
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|
3301 } |
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3302 } |
0 | 3303 |
3304 | |
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3305 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
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|
3306 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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3307 int end_field_offset; |
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3308 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3309 |
113
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3310 JNIid* current = this; |
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3311 while (current != NULL) { |
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3312 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
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3313 #ifdef ASSERT |
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3314 int o = current->offset(); |
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3315 if (current->is_static_field_id()) { |
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3316 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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3317 } |
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|
3318 #endif |
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3319 current = current->next(); |
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3320 } |
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3321 } |
0 | 3322 |
3323 | |
3324 #ifdef ASSERT | |
6725
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3325 void InstanceKlass::set_init_state(ClassState state) { |
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3326 bool good_state = is_shared() ? (_init_state <= state) |
113
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3327 : (_init_state < state); |
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|
3328 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
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|
3329 _init_state = (u1)state; |
113
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3330 } |
0 | 3331 #endif |
3332 | |
3333 | |
3334 // RedefineClasses() support for previous versions: | |
3335 | |
6725
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3336 // Purge previous versions |
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3337 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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3338 if (ik->previous_versions() != NULL) { |
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3339 // This klass has previous versions so see what we can cleanup |
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3340 // while it is safe to do so. |
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3341 |
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3342 int deleted_count = 0; // leave debugging breadcrumbs |
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3343 int live_count = 0; |
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3344 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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3345 ClassLoaderData::the_null_class_loader_data() : |
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3346 ik->class_loader_data(); |
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3347 |
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3348 // RC_TRACE macro has an embedded ResourceMark |
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3349 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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3350 ik->external_name(), ik->previous_versions()->length())); |
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3351 |
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3352 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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3353 // check the previous versions array |
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|
3354 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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3355 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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3356 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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3357 |
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3358 ConstantPool* pvcp = cp_ref; |
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3359 if (!pvcp->on_stack()) { |
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3360 // If the constant pool isn't on stack, none of the methods |
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3361 // are executing. Delete all the methods, the constant pool and |
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3362 // and this previous version node. |
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3363 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3364 if (method_refs != NULL) { |
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3365 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3366 Method* method = method_refs->at(j); |
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3367 assert(method != NULL, "method ref was unexpectedly cleared"); |
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3368 method_refs->remove_at(j); |
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3369 // method will be freed with associated class. |
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|
3370 } |
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|
3371 } |
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|
3372 // Remove the constant pool |
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|
3373 delete pv_node; |
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3374 // Since we are traversing the array backwards, we don't have to |
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3375 // do anything special with the index. |
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3376 ik->previous_versions()->remove_at(i); |
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|
3377 deleted_count++; |
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|
3378 continue; |
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|
3379 } else { |
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3380 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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3381 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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3382 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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3383 live_count++; |
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|
3384 } |
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|
3385 |
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3386 // At least one method is live in this previous version, clean out |
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3387 // the others or mark them as obsolete. |
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3388 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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3389 if (method_refs != NULL) { |
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3390 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
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|
3391 method_refs->length())); |
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3392 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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3393 Method* method = method_refs->at(j); |
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|
3394 assert(method != NULL, "method ref was unexpectedly cleared"); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3395 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3396 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3397 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3398 // method, mark it as obsolete but leave it to clean up later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3399 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3400 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3401 } else if (emcp_method_count == 0) { |
da91efe96a93
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diff
changeset
|
3402 method->set_is_obsolete(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3403 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3404 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3405 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3406 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3407 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3408 method->signature()->as_C_string(), j, i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3409 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3410 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3411 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3412 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3413 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3414 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3415 ("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
|
3416 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3417 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3418 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3419 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3420 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3421 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3422 // 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
|
3423 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3424 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3425 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3426 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3427 // Potentially add an information node that contains pointers to the |
0 | 3428 // 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
|
3429 // 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
|
3430 // 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
|
3431 // 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
|
3432 // 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
|
3433 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3434 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
|
3435 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3436 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
|
3437 "only VMThread can add previous versions"); |
0 | 3438 |
3439 if (_previous_versions == NULL) { | |
3440 // This is the first previous version so make some space. | |
3441 // Start with 2 elements under the assumption that the class | |
3442 // won't be redefined much. | |
6197 | 3443 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3444 GrowableArray<PreviousVersionNode *>(2, true); |
3445 } | |
3446 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3447 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3448 |
0 | 3449 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3450 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3451 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3452 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
|
3453 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3454 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3455 // 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
|
3456 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3457 // 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
|
3458 // 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
|
3459 // 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
|
3460 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3461 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3462 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3463 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3464 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3465 // 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
|
3466 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
|
3467 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3468 ("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
|
3469 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3470 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3471 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
|
3472 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3473 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
|
3474 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3475 // 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
|
3476 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
|
3477 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3478 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3479 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3480 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3481 // 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
|
3482 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3483 } |
0 | 3484 } |
3485 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3486 // 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
|
3487 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
|
3488 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3489 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3490 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3491 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3492 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3493 // 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
|
3494 // is a good time to clear out unused references. |
0 | 3495 |
3496 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3497 _previous_versions->length())); | |
3498 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3499 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3500 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3501 |
3502 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3503 | |
3504 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
|
3505 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3506 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3507 // clear out any matching EMCP method entries the hard way. |
3508 int local_count = 0; | |
3509 for (int i = 0; i < old_methods->length(); i++) { | |
3510 if (!emcp_methods->at(i)) { | |
3511 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3512 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3513 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3514 Symbol* m_signature = old_method->signature(); |
0 | 3515 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3516 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3517 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
|
3518 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3519 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3520 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3521 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3522 if (method_refs == NULL) { |
3523 // We have run into a PreviousVersion generation where | |
3524 // all methods were made obsolete during that generation's | |
3525 // RedefineClasses() operation. At the time of that | |
3526 // operation, all EMCP methods were flushed so we don't | |
3527 // have to go back any further. | |
3528 // | |
3529 // A NULL method_refs is different than an empty method_refs. | |
3530 // We cannot infer any optimizations about older generations | |
3531 // from an empty method_refs for the current generation. | |
3532 break; | |
3533 } | |
3534 | |
3535 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
|
3536 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3537 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3538 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3539 method->name() == m_name && |
0 | 3540 method->signature() == m_signature) { |
3541 // The current RedefineClasses() call has made all EMCP | |
3542 // 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
|
3543 // and remove the reference. |
0 | 3544 RC_TRACE(0x00000400, |
3545 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3546 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3547 | |
3548 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3549 // 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
|
3550 // clean up later. |
0 | 3551 break; |
3552 } | |
3553 } | |
3554 | |
3555 // The previous loop may not find a matching EMCP method, but | |
3556 // that doesn't mean that we can optimize and not go any | |
3557 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
3558 // method for this generation could have already been deleted, |
0 | 3559 // but there still may be an older EMCP method that has not |
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3560 // been deleted. |
0 | 3561 } |
3562 | |
3563 if (++local_count >= obsolete_method_count) { | |
3564 // no more obsolete methods so bail out now | |
3565 break; | |
3566 } | |
3567 } | |
3568 } | |
3569 } | |
3570 } // end add_previous_version() | |
3571 | |
3572 | |
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3573 // Determine if InstanceKlass has a previous version. |
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3574 bool InstanceKlass::has_previous_version() const { |
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3575 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3576 } // end has_previous_version() |
3577 | |
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3578 |
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3579 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3580 Method* m = NULL; |
0 | 3581 if (idnum < methods()->length()) { |
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3582 m = methods()->at(idnum); |
0 | 3583 } |
3584 if (m == NULL || m->method_idnum() != idnum) { | |
3585 for (int index = 0; index < methods()->length(); ++index) { | |
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3586 m = methods()->at(index); |
0 | 3587 if (m->method_idnum() == idnum) { |
3588 return m; | |
3589 } | |
3590 } | |
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3591 // None found, return null for the caller to handle. |
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3592 return NULL; |
0 | 3593 } |
3594 return m; | |
3595 } | |
3596 | |
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3597 jint InstanceKlass::get_cached_class_file_len() { |
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3598 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3599 } |
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3600 |
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3601 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3602 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3603 } |
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3604 |
0 | 3605 |
3606 // Construct a PreviousVersionNode entry for the array hung off | |
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3607 // the InstanceKlass. |
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3608 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3609 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3610 |
3611 _prev_constant_pool = prev_constant_pool; | |
3612 _prev_EMCP_methods = prev_EMCP_methods; | |
3613 } | |
3614 | |
3615 | |
3616 // Destroy a PreviousVersionNode | |
3617 PreviousVersionNode::~PreviousVersionNode() { | |
3618 if (_prev_constant_pool != NULL) { | |
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3619 _prev_constant_pool = NULL; |
0 | 3620 } |
3621 | |
3622 if (_prev_EMCP_methods != NULL) { | |
3623 delete _prev_EMCP_methods; | |
3624 } | |
3625 } | |
3626 | |
3627 // Construct a helper for walking the previous versions array | |
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3628 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3629 _thread = thread; |
0 | 3630 _previous_versions = ik->previous_versions(); |
3631 _current_index = 0; | |
3632 _current_p = NULL; | |
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3633 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3634 } |
3635 | |
3636 | |
3637 // Return the interesting information for the next previous version | |
3638 // of the klass. Returns NULL if there are no more previous versions. | |
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3639 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3640 if (_previous_versions == NULL) { |
3641 // no previous versions so nothing to return | |
3642 return NULL; | |
3643 } | |
3644 | |
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3645 _current_p = NULL; // reset to NULL |
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3646 _current_constant_pool_handle = NULL; |
0 | 3647 |
3648 int length = _previous_versions->length(); | |
3649 | |
3650 while (_current_index < length) { | |
3651 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3652 |
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3653 // Save a handle to the constant pool for this previous version, |
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3654 // which keeps all the methods from being deallocated. |
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3655 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3656 _current_p = pv_node; |
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3657 return pv_node; |
0 | 3658 } |
3659 | |
3660 return NULL; | |
3661 } // end next_previous_version() |