Mercurial > hg > truffle
annotate src/share/vm/oops/instanceKlass.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | d8041d695d19 |
children | 8762b6b8fbb6 |
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/jvmtiThreadState.hpp" |
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53 #include "prims/methodComparator.hpp" |
1972 | 54 #include "runtime/fieldDescriptor.hpp" |
55 #include "runtime/handles.inline.hpp" | |
56 #include "runtime/javaCalls.hpp" | |
57 #include "runtime/mutexLocker.hpp" | |
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58 #include "runtime/thread.inline.hpp" |
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59 #include "services/classLoadingService.hpp" |
1972 | 60 #include "services/threadService.hpp" |
61 #include "utilities/dtrace.hpp" | |
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62 #include "utilities/macros.hpp" |
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63 #if INCLUDE_ALL_GCS |
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64 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 65 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
66 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
67 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
68 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
69 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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70 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 71 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
72 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
73 #include "oops/oop.pcgc.inline.hpp" | |
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74 #endif // INCLUDE_ALL_GCS |
1972 | 75 #ifdef COMPILER1 |
76 #include "c1/c1_Compiler.hpp" | |
77 #endif | |
0 | 78 |
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79 #ifdef DTRACE_ENABLED |
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80 |
4006 | 81 |
82 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
83 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
84 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
85 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
86 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
87 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
88 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
89 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
90 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
91 { \ | |
92 char* data = NULL; \ | |
93 int len = 0; \ | |
94 Symbol* name = (clss)->name(); \ | |
95 if (name != NULL) { \ | |
96 data = (char*)name->bytes(); \ | |
97 len = name->utf8_length(); \ | |
98 } \ | |
99 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
100 data, len, (clss)->class_loader(), thread_type); \ | |
101 } | |
102 | |
103 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
104 { \ | |
105 char* data = NULL; \ | |
106 int len = 0; \ | |
107 Symbol* name = (clss)->name(); \ | |
108 if (name != NULL) { \ | |
109 data = (char*)name->bytes(); \ | |
110 len = name->utf8_length(); \ | |
111 } \ | |
112 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
113 data, len, (clss)->class_loader(), thread_type, wait); \ | |
114 } | |
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115 |
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116 #else // ndef DTRACE_ENABLED |
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117 |
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118 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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119 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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120 |
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121 #endif // ndef DTRACE_ENABLED |
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122 |
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123 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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124 |
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125 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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126 ClassLoaderData* loader_data, |
8031 | 127 int vtable_len, |
128 int itable_len, | |
129 int static_field_size, | |
130 int nonstatic_oop_map_size, | |
131 ReferenceType rt, | |
132 AccessFlags access_flags, | |
133 Symbol* name, | |
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134 Klass* super_klass, |
8031 | 135 bool is_anonymous, |
136 TRAPS) { | |
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137 |
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138 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 139 access_flags.is_interface(), is_anonymous); |
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140 |
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141 // Allocation |
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142 InstanceKlass* ik; |
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143 if (rt == REF_NONE) { |
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144 if (name == vmSymbols::java_lang_Class()) { |
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145 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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146 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 147 access_flags, is_anonymous); |
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148 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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149 (SystemDictionary::ClassLoader_klass_loaded() && |
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150 super_klass != NULL && |
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151 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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152 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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153 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 154 access_flags, is_anonymous); |
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155 } else { |
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156 // normal class |
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157 ik = new (loader_data, size, THREAD) InstanceKlass( |
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158 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 159 access_flags, is_anonymous); |
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160 } |
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161 } else { |
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162 // reference klass |
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163 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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164 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 165 access_flags, is_anonymous); |
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166 } |
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167 |
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168 // Check for pending exception before adding to the loader data and incrementing |
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169 // class count. Can get OOM here. |
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170 if (HAS_PENDING_EXCEPTION) { |
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171 return NULL; |
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172 } |
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173 |
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174 // Add all classes to our internal class loader list here, |
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175 // including classes in the bootstrap (NULL) class loader. |
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176 loader_data->add_class(ik); |
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177 |
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178 Atomic::inc(&_total_instanceKlass_count); |
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179 return ik; |
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180 } |
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181 |
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182 |
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183 // copy method ordering from resource area to Metaspace |
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184 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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185 if (m != NULL) { |
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186 // allocate a new array and copy contents (memcpy?) |
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187 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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188 for (int i = 0; i < m->length(); i++) { |
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189 _method_ordering->at_put(i, m->at(i)); |
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190 } |
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191 } else { |
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192 _method_ordering = Universe::the_empty_int_array(); |
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193 } |
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194 } |
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195 |
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196 // create a new array of vtable_indices for default methods |
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197 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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198 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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199 assert(default_vtable_indices() == NULL, "only create once"); |
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200 set_default_vtable_indices(vtable_indices); |
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201 return vtable_indices; |
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202 } |
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203 |
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204 InstanceKlass::InstanceKlass(int vtable_len, |
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205 int itable_len, |
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206 int static_field_size, |
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207 int nonstatic_oop_map_size, |
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208 ReferenceType rt, |
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209 AccessFlags access_flags, |
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210 bool is_anonymous) { |
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211 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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212 |
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213 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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214 access_flags.is_interface(), is_anonymous); |
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215 |
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216 set_vtable_length(vtable_len); |
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217 set_itable_length(itable_len); |
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218 set_static_field_size(static_field_size); |
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219 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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220 set_access_flags(access_flags); |
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221 _misc_flags = 0; // initialize to zero |
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222 set_is_anonymous(is_anonymous); |
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223 assert(size() == iksize, "wrong size for object"); |
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224 |
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225 set_array_klasses(NULL); |
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226 set_methods(NULL); |
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227 set_method_ordering(NULL); |
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228 set_default_methods(NULL); |
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229 set_default_vtable_indices(NULL); |
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230 set_local_interfaces(NULL); |
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231 set_transitive_interfaces(NULL); |
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232 init_implementor(); |
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233 set_fields(NULL, 0); |
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234 set_constants(NULL); |
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235 set_class_loader_data(NULL); |
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236 set_source_file_name_index(0); |
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237 set_source_debug_extension(NULL, 0); |
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238 set_array_name(NULL); |
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239 set_inner_classes(NULL); |
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240 set_static_oop_field_count(0); |
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241 set_nonstatic_field_size(0); |
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242 set_is_marked_dependent(false); |
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243 set_init_state(InstanceKlass::allocated); |
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244 set_init_thread(NULL); |
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245 set_reference_type(rt); |
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246 set_oop_map_cache(NULL); |
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247 set_jni_ids(NULL); |
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248 set_osr_nmethods_head(NULL); |
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249 set_breakpoints(NULL); |
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250 init_previous_versions(); |
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251 set_generic_signature_index(0); |
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252 release_set_methods_jmethod_ids(NULL); |
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253 set_annotations(NULL); |
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254 set_jvmti_cached_class_field_map(NULL); |
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255 set_initial_method_idnum(0); |
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256 _dependencies = NULL; |
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257 set_jvmti_cached_class_field_map(NULL); |
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258 set_cached_class_file(NULL); |
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259 set_initial_method_idnum(0); |
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260 set_minor_version(0); |
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261 set_major_version(0); |
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262 NOT_PRODUCT(_verify_count = 0;) |
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263 |
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264 // initialize the non-header words to zero |
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265 intptr_t* p = (intptr_t*)this; |
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266 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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267 p[index] = NULL_WORD; |
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268 } |
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269 |
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270 // Set temporary value until parseClassFile updates it with the real instance |
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271 // size. |
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272 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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273 } |
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274 |
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275 |
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276 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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277 Array<Method*>* methods) { |
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278 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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279 !methods->is_shared()) { |
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280 for (int i = 0; i < methods->length(); i++) { |
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281 Method* method = methods->at(i); |
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282 if (method == NULL) continue; // maybe null if error processing |
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283 // Only want to delete methods that are not executing for RedefineClasses. |
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284 // The previous version will point to them so they're not totally dangling |
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285 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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286 MetadataFactory::free_metadata(loader_data, method); |
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287 } |
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288 MetadataFactory::free_array<Method*>(loader_data, methods); |
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289 } |
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290 } |
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291 |
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292 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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293 Klass* super_klass, |
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294 Array<Klass*>* local_interfaces, |
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295 Array<Klass*>* transitive_interfaces) { |
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296 // Only deallocate transitive interfaces if not empty, same as super class |
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297 // or same as local interfaces. See code in parseClassFile. |
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298 Array<Klass*>* ti = transitive_interfaces; |
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299 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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300 // check that the interfaces don't come from super class |
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301 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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302 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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303 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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304 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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305 } |
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306 } |
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307 |
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308 // local interfaces can be empty |
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309 if (local_interfaces != Universe::the_empty_klass_array() && |
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310 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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311 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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312 } |
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313 } |
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314 |
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315 // This function deallocates the metadata and C heap pointers that the |
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316 // InstanceKlass points to. |
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317 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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318 |
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319 // Orphan the mirror first, CMS thinks it's still live. |
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320 if (java_mirror() != NULL) { |
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321 java_lang_Class::set_klass(java_mirror(), NULL); |
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322 } |
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323 |
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324 // Need to take this class off the class loader data list. |
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325 loader_data->remove_class(this); |
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326 |
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327 // The array_klass for this class is created later, after error handling. |
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328 // For class redefinition, we keep the original class so this scratch class |
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329 // doesn't have an array class. Either way, assert that there is nothing |
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330 // to deallocate. |
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331 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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332 |
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333 // Release C heap allocated data that this might point to, which includes |
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334 // reference counting symbol names. |
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335 release_C_heap_structures(); |
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336 |
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337 deallocate_methods(loader_data, methods()); |
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338 set_methods(NULL); |
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339 |
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340 if (method_ordering() != NULL && |
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341 method_ordering() != Universe::the_empty_int_array() && |
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342 !method_ordering()->is_shared()) { |
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343 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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344 } |
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345 set_method_ordering(NULL); |
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346 |
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347 // default methods can be empty |
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348 if (default_methods() != NULL && |
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349 default_methods() != Universe::the_empty_method_array() && |
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350 !default_methods()->is_shared()) { |
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351 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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352 } |
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353 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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354 set_default_methods(NULL); |
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355 |
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356 // default methods vtable indices can be empty |
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357 if (default_vtable_indices() != NULL && |
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358 !default_vtable_indices()->is_shared()) { |
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359 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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360 } |
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361 set_default_vtable_indices(NULL); |
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362 |
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363 |
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364 // This array is in Klass, but remove it with the InstanceKlass since |
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365 // this place would be the only caller and it can share memory with transitive |
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366 // interfaces. |
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367 if (secondary_supers() != NULL && |
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368 secondary_supers() != Universe::the_empty_klass_array() && |
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369 secondary_supers() != transitive_interfaces() && |
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370 !secondary_supers()->is_shared()) { |
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371 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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372 } |
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373 set_secondary_supers(NULL); |
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374 |
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375 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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376 set_transitive_interfaces(NULL); |
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377 set_local_interfaces(NULL); |
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378 |
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379 if (fields() != NULL && !fields()->is_shared()) { |
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380 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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381 } |
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382 set_fields(NULL, 0); |
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383 |
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384 // If a method from a redefined class is using this constant pool, don't |
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385 // delete it, yet. The new class's previous version will point to this. |
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386 if (constants() != NULL) { |
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387 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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388 if (!constants()->is_shared()) { |
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389 MetadataFactory::free_metadata(loader_data, constants()); |
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390 } |
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391 set_constants(NULL); |
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392 } |
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393 |
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394 if (inner_classes() != NULL && |
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395 inner_classes() != Universe::the_empty_short_array() && |
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396 !inner_classes()->is_shared()) { |
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397 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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398 } |
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399 set_inner_classes(NULL); |
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400 |
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401 // We should deallocate the Annotations instance if it's not in shared spaces. |
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402 if (annotations() != NULL && !annotations()->is_shared()) { |
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403 MetadataFactory::free_metadata(loader_data, annotations()); |
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404 } |
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405 set_annotations(NULL); |
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406 } |
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407 |
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408 bool InstanceKlass::should_be_initialized() const { |
0 | 409 return !is_initialized(); |
410 } | |
411 | |
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412 klassVtable* InstanceKlass::vtable() const { |
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413 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 414 } |
415 | |
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416 klassItable* InstanceKlass::itable() const { |
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417 return new klassItable(instanceKlassHandle(this)); |
0 | 418 } |
419 | |
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420 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 421 if (!EagerInitialization) return; |
422 | |
423 if (this->is_not_initialized()) { | |
424 // abort if the the class has a class initializer | |
425 if (this->class_initializer() != NULL) return; | |
426 | |
427 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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428 Klass* super = this->super(); |
0 | 429 if (super == NULL) return; |
430 | |
431 // abort if the super class should be initialized | |
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432 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 433 |
434 // call body to expose the this pointer | |
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435 instanceKlassHandle this_oop(thread, this); |
0 | 436 eager_initialize_impl(this_oop); |
437 } | |
438 } | |
439 | |
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440 // JVMTI spec thinks there are signers and protection domain in the |
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441 // instanceKlass. These accessors pretend these fields are there. |
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442 // The hprof specification also thinks these fields are in InstanceKlass. |
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443 oop InstanceKlass::protection_domain() const { |
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444 // return the protection_domain from the mirror |
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445 return java_lang_Class::protection_domain(java_mirror()); |
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446 } |
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447 |
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448 // To remove these from requires an incompatible change and CCC request. |
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449 objArrayOop InstanceKlass::signers() const { |
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450 // return the signers from the mirror |
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451 return java_lang_Class::signers(java_mirror()); |
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452 } |
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453 |
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454 oop InstanceKlass::init_lock() const { |
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455 // return the init lock from the mirror |
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456 oop lock = java_lang_Class::init_lock(java_mirror()); |
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457 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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458 "only fully initialized state can have a null lock"); |
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459 return lock; |
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460 } |
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461 |
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462 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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463 // threads to get this lock will see a null lock and will not lock. |
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464 // That's okay because they all check for initialized state after getting |
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465 // the lock and return. |
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466 void InstanceKlass::fence_and_clear_init_lock() { |
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467 // make sure previous stores are all done, notably the init_state. |
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468 OrderAccess::storestore(); |
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469 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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470 assert(!is_not_initialized(), "class must be initialized now"); |
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471 } |
0 | 472 |
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473 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 474 EXCEPTION_MARK; |
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475 oop init_lock = this_oop->init_lock(); |
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476 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 477 |
478 // abort if someone beat us to the initialization | |
479 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
480 | |
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481 ClassState old_state = this_oop->init_state(); |
0 | 482 link_class_impl(this_oop, true, THREAD); |
483 if (HAS_PENDING_EXCEPTION) { | |
484 CLEAR_PENDING_EXCEPTION; | |
485 // Abort if linking the class throws an exception. | |
486 | |
487 // Use a test to avoid redundantly resetting the state if there's | |
488 // no change. Set_init_state() asserts that state changes make | |
489 // progress, whereas here we might just be spinning in place. | |
490 if( old_state != this_oop->_init_state ) | |
491 this_oop->set_init_state (old_state); | |
492 } else { | |
493 // linking successfull, mark class as initialized | |
494 this_oop->set_init_state (fully_initialized); | |
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495 this_oop->fence_and_clear_init_lock(); |
0 | 496 // trace |
497 if (TraceClassInitialization) { | |
498 ResourceMark rm(THREAD); | |
499 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
500 } | |
501 } | |
502 } | |
503 | |
504 | |
505 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
506 // process. The step comments refers to the procedure described in that section. | |
507 // Note: implementation moved to static method to expose the this pointer. | |
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508 void InstanceKlass::initialize(TRAPS) { |
0 | 509 if (this->should_be_initialized()) { |
510 HandleMark hm(THREAD); | |
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511 instanceKlassHandle this_oop(THREAD, this); |
0 | 512 initialize_impl(this_oop, CHECK); |
513 // Note: at this point the class may be initialized | |
514 // OR it may be in the state of being initialized | |
515 // in case of recursive initialization! | |
516 } else { | |
517 assert(is_initialized(), "sanity check"); | |
518 } | |
519 } | |
520 | |
521 | |
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522 bool InstanceKlass::verify_code( |
0 | 523 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
524 // 1) Verify the bytecodes | |
525 Verifier::Mode mode = | |
526 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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527 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 528 } |
529 | |
530 | |
531 // Used exclusively by the shared spaces dump mechanism to prevent | |
532 // classes mapped into the shared regions in new VMs from appearing linked. | |
533 | |
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534 void InstanceKlass::unlink_class() { |
0 | 535 assert(is_linked(), "must be linked"); |
536 _init_state = loaded; | |
537 } | |
538 | |
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539 void InstanceKlass::link_class(TRAPS) { |
0 | 540 assert(is_loaded(), "must be loaded"); |
541 if (!is_linked()) { | |
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542 HandleMark hm(THREAD); |
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543 instanceKlassHandle this_oop(THREAD, this); |
0 | 544 link_class_impl(this_oop, true, CHECK); |
545 } | |
546 } | |
547 | |
548 // Called to verify that a class can link during initialization, without | |
549 // throwing a VerifyError. | |
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550 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 551 assert(is_loaded(), "must be loaded"); |
552 if (!is_linked()) { | |
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553 HandleMark hm(THREAD); |
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554 instanceKlassHandle this_oop(THREAD, this); |
0 | 555 link_class_impl(this_oop, false, CHECK_false); |
556 } | |
557 return is_linked(); | |
558 } | |
559 | |
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560 bool InstanceKlass::link_class_impl( |
0 | 561 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
562 // check for error state | |
563 if (this_oop->is_in_error_state()) { | |
564 ResourceMark rm(THREAD); | |
565 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
566 this_oop->external_name(), false); | |
567 } | |
568 // return if already verified | |
569 if (this_oop->is_linked()) { | |
570 return true; | |
571 } | |
572 | |
573 // Timing | |
574 // timer handles recursion | |
575 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
576 JavaThread* jt = (JavaThread*)THREAD; | |
577 | |
578 // link super class before linking this class | |
579 instanceKlassHandle super(THREAD, this_oop->super()); | |
580 if (super.not_null()) { | |
581 if (super->is_interface()) { // check if super class is an interface | |
582 ResourceMark rm(THREAD); | |
583 Exceptions::fthrow( | |
584 THREAD_AND_LOCATION, | |
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585 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 586 "class %s has interface %s as super class", |
587 this_oop->external_name(), | |
588 super->external_name() | |
589 ); | |
590 return false; | |
591 } | |
592 | |
593 link_class_impl(super, throw_verifyerror, CHECK_false); | |
594 } | |
595 | |
596 // link all interfaces implemented by this class before linking this class | |
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597 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 598 int num_interfaces = interfaces->length(); |
599 for (int index = 0; index < num_interfaces; index++) { | |
600 HandleMark hm(THREAD); | |
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601 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 602 link_class_impl(ih, throw_verifyerror, CHECK_false); |
603 } | |
604 | |
605 // in case the class is linked in the process of linking its superclasses | |
606 if (this_oop->is_linked()) { | |
607 return true; | |
608 } | |
609 | |
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610 // trace only the link time for this klass that includes |
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611 // the verification time |
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612 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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613 ClassLoader::perf_class_link_selftime(), |
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614 ClassLoader::perf_classes_linked(), |
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615 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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616 jt->get_thread_stat()->perf_timers_addr(), |
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617 PerfClassTraceTime::CLASS_LINK); |
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618 |
0 | 619 // verification & rewriting |
620 { | |
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621 oop init_lock = this_oop->init_lock(); |
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622 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 623 // rewritten will have been set if loader constraint error found |
624 // on an earlier link attempt | |
625 // don't verify or rewrite if already rewritten | |
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626 |
0 | 627 if (!this_oop->is_linked()) { |
628 if (!this_oop->is_rewritten()) { | |
629 { | |
630 // Timer includes any side effects of class verification (resolution, | |
631 // etc), but not recursive entry into verify_code(). | |
875
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632 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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633 ClassLoader::perf_class_verify_selftime(), |
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634 ClassLoader::perf_classes_verified(), |
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635 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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636 jt->get_thread_stat()->perf_timers_addr(), |
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637 PerfClassTraceTime::CLASS_VERIFY); |
0 | 638 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
639 if (!verify_ok) { | |
640 return false; | |
641 } | |
642 } | |
643 | |
644 // Just in case a side-effect of verify linked this class already | |
645 // (which can sometimes happen since the verifier loads classes | |
646 // using custom class loaders, which are free to initialize things) | |
647 if (this_oop->is_linked()) { | |
648 return true; | |
649 } | |
650 | |
651 // also sets rewritten | |
652 this_oop->rewrite_class(CHECK_false); | |
653 } | |
654 | |
3404 | 655 // relocate jsrs and link methods after they are all rewritten |
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656 this_oop->link_methods(CHECK_false); |
3404 | 657 |
0 | 658 // Initialize the vtable and interface table after |
659 // methods have been rewritten since rewrite may | |
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660 // fabricate new Method*s. |
0 | 661 // also does loader constraint checking |
662 if (!this_oop()->is_shared()) { | |
663 ResourceMark rm(THREAD); | |
664 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
665 this_oop->itable()->initialize_itable(true, CHECK_false); | |
666 } | |
667 #ifdef ASSERT | |
668 else { | |
669 ResourceMark rm(THREAD); | |
670 this_oop->vtable()->verify(tty, true); | |
671 // In case itable verification is ever added. | |
672 // this_oop->itable()->verify(tty, true); | |
673 } | |
674 #endif | |
675 this_oop->set_init_state(linked); | |
676 if (JvmtiExport::should_post_class_prepare()) { | |
677 Thread *thread = THREAD; | |
678 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
679 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
680 } | |
681 } | |
682 } | |
683 return true; | |
684 } | |
685 | |
686 | |
687 // Rewrite the byte codes of all of the methods of a class. | |
688 // The rewriter must be called exactly once. Rewriting must happen after | |
689 // verification but before the first method of the class is executed. | |
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690 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 691 assert(is_loaded(), "must be loaded"); |
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692 instanceKlassHandle this_oop(THREAD, this); |
0 | 693 if (this_oop->is_rewritten()) { |
694 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
695 return; | |
696 } | |
3404 | 697 Rewriter::rewrite(this_oop, CHECK); |
0 | 698 this_oop->set_rewritten(); |
699 } | |
700 | |
3404 | 701 // Now relocate and link method entry points after class is rewritten. |
702 // This is outside is_rewritten flag. In case of an exception, it can be | |
703 // executed more than once. | |
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704 void InstanceKlass::link_methods(TRAPS) { |
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705 int len = methods()->length(); |
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706 for (int i = len-1; i >= 0; i--) { |
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707 methodHandle m(THREAD, methods()->at(i)); |
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708 |
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709 // Set up method entry points for compiler and interpreter . |
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710 m->link_method(m, CHECK); |
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711 |
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712 // This is for JVMTI and unrelated to relocator but the last thing we do |
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713 #ifdef ASSERT |
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714 if (StressMethodComparator) { |
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715 ResourceMark rm(THREAD); |
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716 static int nmc = 0; |
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717 for (int j = i; j >= 0 && j >= i-4; j--) { |
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718 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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719 bool z = MethodComparator::methods_EMCP(m(), |
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720 methods()->at(j)); |
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721 if (j == i && !z) { |
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722 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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723 assert(z, "method must compare equal to itself"); |
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724 } |
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725 } |
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726 } |
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727 #endif //ASSERT |
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728 } |
3404 | 729 } |
730 | |
0 | 731 |
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732 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 733 // Make sure klass is linked (verified) before initialization |
734 // A class could already be verified, since it has been reflected upon. | |
735 this_oop->link_class(CHECK); | |
736 | |
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737 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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738 |
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739 bool wait = false; |
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740 |
0 | 741 // refer to the JVM book page 47 for description of steps |
742 // Step 1 | |
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743 { |
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744 oop init_lock = this_oop->init_lock(); |
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745 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 746 |
747 Thread *self = THREAD; // it's passed the current thread | |
748 | |
749 // Step 2 | |
750 // If we were to use wait() instead of waitInterruptibly() then | |
751 // we might end up throwing IE from link/symbol resolution sites | |
752 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
753 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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754 wait = true; |
0 | 755 ol.waitUninterruptibly(CHECK); |
756 } | |
757 | |
758 // Step 3 | |
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759 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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760 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 761 return; |
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762 } |
0 | 763 |
764 // Step 4 | |
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765 if (this_oop->is_initialized()) { |
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766 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 767 return; |
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768 } |
0 | 769 |
770 // Step 5 | |
771 if (this_oop->is_in_error_state()) { | |
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772 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 773 ResourceMark rm(THREAD); |
774 const char* desc = "Could not initialize class "; | |
775 const char* className = this_oop->external_name(); | |
776 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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777 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 778 if (NULL == message) { |
779 // Out of memory: can't create detailed error message | |
780 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
781 } else { | |
782 jio_snprintf(message, msglen, "%s%s", desc, className); | |
783 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
784 } | |
785 } | |
786 | |
787 // Step 6 | |
788 this_oop->set_init_state(being_initialized); | |
789 this_oop->set_init_thread(self); | |
790 } | |
791 | |
792 // Step 7 | |
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793 Klass* super_klass = this_oop->super(); |
6983 | 794 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
795 super_klass->initialize(THREAD); | |
0 | 796 |
797 if (HAS_PENDING_EXCEPTION) { | |
798 Handle e(THREAD, PENDING_EXCEPTION); | |
799 CLEAR_PENDING_EXCEPTION; | |
800 { | |
801 EXCEPTION_MARK; | |
802 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
803 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
804 } | |
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805 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 806 THROW_OOP(e()); |
807 } | |
808 } | |
809 | |
6934 | 810 if (this_oop->has_default_methods()) { |
811 // Step 7.5: initialize any interfaces which have default methods | |
812 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
813 Klass* iface = this_oop->local_interfaces()->at(i); | |
814 InstanceKlass* ik = InstanceKlass::cast(iface); | |
815 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
816 ik->initialize(THREAD); | |
817 | |
818 if (HAS_PENDING_EXCEPTION) { | |
819 Handle e(THREAD, PENDING_EXCEPTION); | |
820 CLEAR_PENDING_EXCEPTION; | |
821 { | |
822 EXCEPTION_MARK; | |
823 // Locks object, set state, and notify all waiting threads | |
824 this_oop->set_initialization_state_and_notify( | |
825 initialization_error, THREAD); | |
826 | |
827 // ignore any exception thrown, superclass initialization error is | |
828 // thrown below | |
829 CLEAR_PENDING_EXCEPTION; | |
830 } | |
831 DTRACE_CLASSINIT_PROBE_WAIT( | |
832 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
833 THROW_OOP(e()); | |
834 } | |
835 } | |
836 } | |
837 } | |
838 | |
0 | 839 // Step 8 |
840 { | |
841 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
842 JavaThread* jt = (JavaThread*)THREAD; | |
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843 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 844 // Timer includes any side effects of class initialization (resolution, |
845 // etc), but not recursive entry into call_class_initializer(). | |
875
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846 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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847 ClassLoader::perf_class_init_selftime(), |
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848 ClassLoader::perf_classes_inited(), |
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849 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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850 jt->get_thread_stat()->perf_timers_addr(), |
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851 PerfClassTraceTime::CLASS_CLINIT); |
0 | 852 this_oop->call_class_initializer(THREAD); |
853 } | |
854 | |
855 // Step 9 | |
856 if (!HAS_PENDING_EXCEPTION) { | |
857 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
858 { ResourceMark rm(THREAD); | |
859 debug_only(this_oop->vtable()->verify(tty, true);) | |
860 } | |
861 } | |
862 else { | |
863 // Step 10 and 11 | |
864 Handle e(THREAD, PENDING_EXCEPTION); | |
865 CLEAR_PENDING_EXCEPTION; | |
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866 // JVMTI has already reported the pending exception |
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867 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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868 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 869 { |
870 EXCEPTION_MARK; | |
871 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
872 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
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873 // JVMTI has already reported the pending exception |
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874 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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875 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 876 } |
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877 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 878 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 879 THROW_OOP(e()); |
880 } else { | |
881 JavaCallArguments args(e); | |
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882 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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883 vmSymbols::throwable_void_signature(), |
0 | 884 &args); |
885 } | |
886 } | |
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887 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 888 } |
889 | |
890 | |
891 // Note: implementation moved to static method to expose the this pointer. | |
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892 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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893 instanceKlassHandle kh(THREAD, this); |
0 | 894 set_initialization_state_and_notify_impl(kh, state, CHECK); |
895 } | |
896 | |
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897 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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898 oop init_lock = this_oop->init_lock(); |
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899 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 900 this_oop->set_init_state(state); |
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901 this_oop->fence_and_clear_init_lock(); |
0 | 902 ol.notify_all(CHECK); |
903 } | |
904 | |
5998
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905 // The embedded _implementor field can only record one implementor. |
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906 // When there are more than one implementors, the _implementor field |
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907 // is set to the interface Klass* itself. Following are the possible |
5998
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908 // values for the _implementor field: |
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909 // NULL - no implementor |
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910 // implementor Klass* - one implementor |
5998
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911 // self - more than one implementor |
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912 // |
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913 // The _implementor field only exists for interfaces. |
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914 void InstanceKlass::add_implementor(Klass* k) { |
0 | 915 assert(Compile_lock->owned_by_self(), ""); |
5998
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916 assert(is_interface(), "not interface"); |
0 | 917 // Filter out my subinterfaces. |
918 // (Note: Interfaces are never on the subklass list.) | |
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919 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 920 |
921 // Filter out subclasses whose supers already implement me. | |
922 // (Note: CHA must walk subclasses of direct implementors | |
923 // in order to locate indirect implementors.) | |
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924 Klass* sk = InstanceKlass::cast(k)->super(); |
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925 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 926 // We only need to check one immediate superclass, since the |
927 // implements_interface query looks at transitive_interfaces. | |
928 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
929 return; | |
930 | |
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931 Klass* ik = implementor(); |
5998
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932 if (ik == NULL) { |
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933 set_implementor(k); |
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934 } else if (ik != this) { |
5998
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935 // There is already an implementor. Use itself as an indicator of |
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936 // more than one implementors. |
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937 set_implementor(this); |
0 | 938 } |
939 | |
940 // The implementor also implements the transitive_interfaces | |
941 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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942 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 943 } |
944 } | |
945 | |
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946 void InstanceKlass::init_implementor() { |
5998
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947 if (is_interface()) { |
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948 set_implementor(NULL); |
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949 } |
0 | 950 } |
951 | |
952 | |
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953 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 954 // link this class into the implementors list of every interface it implements |
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955 Klass* this_as_klass_oop = this; |
0 | 956 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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957 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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958 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 959 assert(interf->is_interface(), "expected interface"); |
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960 interf->add_implementor(this_as_klass_oop); |
0 | 961 } |
962 } | |
963 | |
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964 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 965 if (is_interface()) |
966 return false; | |
967 else | |
968 return Klass::can_be_primary_super_slow(); | |
969 } | |
970 | |
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971 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 972 // The secondaries are the implemented interfaces. |
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973 InstanceKlass* ik = InstanceKlass::cast(this); |
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974 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 975 int num_secondaries = num_extra_slots + interfaces->length(); |
976 if (num_secondaries == 0) { | |
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977 // Must share this for correct bootstrapping! |
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978 set_secondary_supers(Universe::the_empty_klass_array()); |
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979 return NULL; |
0 | 980 } else if (num_extra_slots == 0) { |
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981 // The secondary super list is exactly the same as the transitive interfaces. |
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982 // Redefine classes has to be careful not to delete this! |
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983 set_secondary_supers(interfaces); |
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984 return NULL; |
0 | 985 } else { |
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986 // Copy transitive interfaces to a temporary growable array to be constructed |
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987 // into the secondary super list with extra slots. |
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988 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 989 for (int i = 0; i < interfaces->length(); i++) { |
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990 secondaries->push(interfaces->at(i)); |
0 | 991 } |
992 return secondaries; | |
993 } | |
994 } | |
995 | |
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996 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 997 if (k->is_interface()) { |
0 | 998 return implements_interface(k); |
999 } else { | |
1000 return Klass::compute_is_subtype_of(k); | |
1001 } | |
1002 } | |
1003 | |
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1004 bool InstanceKlass::implements_interface(Klass* k) const { |
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1005 if (this == k) return true; |
6983 | 1006 assert(k->is_interface(), "should be an interface class"); |
0 | 1007 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1008 if (transitive_interfaces()->at(i) == k) { |
0 | 1009 return true; |
1010 } | |
1011 } | |
1012 return false; | |
1013 } | |
1014 | |
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1015 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1016 // Verify direct super interface |
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1017 if (this == k) return true; |
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1018 assert(k->is_interface(), "should be an interface class"); |
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1019 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1020 if (local_interfaces()->at(i) == k) { |
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1021 return true; |
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1022 } |
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1023 } |
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1024 return false; |
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1025 } |
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1026 |
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1027 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1028 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1029 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1030 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1031 JvmtiExport::post_array_size_exhausted(); |
0 | 1032 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1033 } | |
1034 int size = objArrayOopDesc::object_size(length); | |
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1035 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1036 KlassHandle h_ak (THREAD, ak); |
1037 objArrayOop o = | |
1038 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1039 return o; | |
1040 } | |
1041 | |
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1042 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1043 if (TraceFinalizerRegistration) { |
1044 tty->print("Registered "); | |
1045 i->print_value_on(tty); | |
1046 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1047 } | |
1048 instanceHandle h_i(THREAD, i); | |
1049 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1050 JavaValue result(T_VOID); | |
1051 JavaCallArguments args(h_i); | |
1052 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1053 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1054 return h_i(); | |
1055 } | |
1056 | |
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1057 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1058 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1059 int size = size_helper(); // Query before forming handle. | |
1060 | |
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1061 KlassHandle h_k(THREAD, this); |
0 | 1062 |
1063 instanceOop i; | |
1064 | |
1065 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1066 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1067 i = register_finalizer(i, CHECK_NULL); | |
1068 } | |
1069 return i; | |
1070 } | |
1071 | |
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1072 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1073 if (is_interface() || is_abstract()) { |
1074 ResourceMark rm(THREAD); | |
1075 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1076 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1077 } | |
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1078 if (this == SystemDictionary::Class_klass()) { |
0 | 1079 ResourceMark rm(THREAD); |
1080 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1081 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1082 } | |
1083 } | |
1084 | |
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1085 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1086 instanceKlassHandle this_oop(THREAD, this); |
0 | 1087 return array_klass_impl(this_oop, or_null, n, THREAD); |
1088 } | |
1089 | |
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1090 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1091 if (this_oop->array_klasses() == NULL) { |
1092 if (or_null) return NULL; | |
1093 | |
1094 ResourceMark rm; | |
1095 JavaThread *jt = (JavaThread *)THREAD; | |
1096 { | |
1097 // Atomic creation of array_klasses | |
1098 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1099 MutexLocker ma(MultiArray_lock, THREAD); | |
1100 | |
1101 // Check if update has already taken place | |
1102 if (this_oop->array_klasses() == NULL) { | |
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1103 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1104 this_oop->set_array_klasses(k); |
1105 } | |
1106 } | |
1107 } | |
1108 // _this will always be set at this point | |
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1109 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1110 if (or_null) { |
1111 return oak->array_klass_or_null(n); | |
1112 } | |
1113 return oak->array_klass(n, CHECK_NULL); | |
1114 } | |
1115 | |
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1116 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1117 return array_klass_impl(or_null, 1, THREAD); |
1118 } | |
1119 | |
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1120 void InstanceKlass::call_class_initializer(TRAPS) { |
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1121 instanceKlassHandle ik (THREAD, this); |
0 | 1122 call_class_initializer_impl(ik, THREAD); |
1123 } | |
1124 | |
1125 static int call_class_initializer_impl_counter = 0; // for debugging | |
1126 | |
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1127 Method* InstanceKlass::class_initializer() { |
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1128 Method* clinit = find_method( |
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1129 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1130 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1131 return clinit; |
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1132 } |
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1133 return NULL; |
0 | 1134 } |
1135 | |
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1136 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1137 if (ReplayCompiles && |
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1138 (ReplaySuppressInitializers == 1 || |
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1139 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1140 // Hide the existence of the initializer for the purpose of replaying the compile |
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1141 return; |
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1142 } |
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1143 |
0 | 1144 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1145 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1146 if (TraceClassInitialization) { | |
1147 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1148 this_oop->name()->print_value(); | |
1149 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1150 } | |
1151 if (h_method() != NULL) { | |
1152 JavaCallArguments args; // No arguments | |
1153 JavaValue result(T_VOID); | |
1154 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1155 } | |
1156 } | |
1157 | |
1158 | |
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1159 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1160 InterpreterOopMap* entry_for) { |
1161 // Dirty read, then double-check under a lock. | |
1162 if (_oop_map_cache == NULL) { | |
1163 // Otherwise, allocate a new one. | |
1164 MutexLocker x(OopMapCacheAlloc_lock); | |
1165 // First time use. Allocate a cache in C heap | |
1166 if (_oop_map_cache == NULL) { | |
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1167 // Release stores from OopMapCache constructor before assignment |
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1168 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1169 // required memory barrier only because of the volatile |
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1170 // qualifier of _oop_map_cache. |
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1171 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1172 } |
1173 } | |
1174 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1175 _oop_map_cache->lookup(method, bci, entry_for); | |
1176 } | |
1177 | |
1178 | |
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1179 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1180 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1181 Symbol* f_name = fs.name(); |
1182 Symbol* f_sig = fs.signature(); | |
0 | 1183 if (f_name == name && f_sig == sig) { |
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1184 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1185 return true; |
1186 } | |
1187 } | |
1188 return false; | |
1189 } | |
1190 | |
1191 | |
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1192 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1193 const int n = local_interfaces()->length(); |
1194 for (int i = 0; i < n; i++) { | |
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1195 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1196 assert(intf1->is_interface(), "just checking type"); |
0 | 1197 // search for field in current interface |
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1198 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1199 assert(fd->is_static(), "interface field must be static"); |
1200 return intf1; | |
1201 } | |
1202 // search for field in direct superinterfaces | |
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1203 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1204 if (intf2 != NULL) return intf2; |
1205 } | |
1206 // otherwise field lookup fails | |
1207 return NULL; | |
1208 } | |
1209 | |
1210 | |
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1211 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1212 // search order according to newest JVM spec (5.4.3.2, p.167). |
1213 // 1) search for field in current klass | |
1214 if (find_local_field(name, sig, fd)) { | |
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1215 return const_cast<InstanceKlass*>(this); |
0 | 1216 } |
1217 // 2) search for field recursively in direct superinterfaces | |
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1218 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1219 if (intf != NULL) return intf; |
1220 } | |
1221 // 3) apply field lookup recursively if superclass exists | |
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1222 { Klass* supr = super(); |
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1223 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1224 } |
1225 // 4) otherwise field lookup fails | |
1226 return NULL; | |
1227 } | |
1228 | |
1229 | |
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1230 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1231 // search order according to newest JVM spec (5.4.3.2, p.167). |
1232 // 1) search for field in current klass | |
1233 if (find_local_field(name, sig, fd)) { | |
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1234 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1235 } |
1236 // 2) search for field recursively in direct superinterfaces | |
1237 if (is_static) { | |
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1238 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1239 if (intf != NULL) return intf; |
1240 } | |
1241 // 3) apply field lookup recursively if superclass exists | |
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1242 { Klass* supr = super(); |
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1243 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1244 } |
1245 // 4) otherwise field lookup fails | |
1246 return NULL; | |
1247 } | |
1248 | |
1249 | |
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1250 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1251 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1252 if (fs.offset() == offset) { |
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1253 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1254 if (fd->is_static() == is_static) return true; |
1255 } | |
1256 } | |
1257 return false; | |
1258 } | |
1259 | |
1260 | |
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1261 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1262 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1263 while (klass != NULL) { |
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1264 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1265 return true; |
1266 } | |
6983 | 1267 klass = klass->super(); |
0 | 1268 } |
1269 return false; | |
1270 } | |
1271 | |
1272 | |
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1273 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1274 int len = methods()->length(); |
1275 for (int index = 0; index < len; index++) { | |
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1276 Method* m = methods()->at(index); |
0 | 1277 assert(m->is_method(), "must be method"); |
1278 f(m); | |
1279 } | |
1280 } | |
1281 | |
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1282 |
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1283 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1284 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1285 if (fs.access_flags().is_static()) { | |
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1286 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1287 cl->do_field(&fd); |
1288 } | |
0 | 1289 } |
1290 } | |
1291 | |
1292 | |
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1293 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS) { |
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1294 instanceKlassHandle h_this(THREAD, this); |
0 | 1295 do_local_static_fields_impl(h_this, f, CHECK); |
1296 } | |
1297 | |
1298 | |
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1299 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS) { |
3938 | 1300 for (JavaFieldStream fs(this_oop()); !fs.done(); fs.next()) { |
1301 if (fs.access_flags().is_static()) { | |
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1302 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1303 f(&fd, CHECK); |
1304 } | |
0 | 1305 } |
1306 } | |
1307 | |
1308 | |
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1309 static int compare_fields_by_offset(int* a, int* b) { |
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1310 return a[0] - b[0]; |
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1311 } |
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1312 |
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1313 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1314 InstanceKlass* super = superklass(); |
0 | 1315 if (super != NULL) { |
1316 super->do_nonstatic_fields(cl); | |
1317 } | |
44
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1318 fieldDescriptor fd; |
3938 | 1319 int length = java_fields_count(); |
44
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1320 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1321 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1322 int j = 0; |
3938 | 1323 for (int i = 0; i < length; i += 1) { |
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1324 fd.reinitialize(this, i); |
44
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1325 if (!fd.is_static()) { |
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1326 fields_sorted[j + 0] = fd.offset(); |
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1327 fields_sorted[j + 1] = i; |
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1328 j += 2; |
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1329 } |
0 | 1330 } |
44
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1331 if (j > 0) { |
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1332 length = j; |
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1333 // _sort_Fn is defined in growableArray.hpp. |
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1334 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1335 for (int i = 0; i < length; i += 2) { |
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1336 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1337 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1338 cl->do_field(&fd); |
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1339 } |
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1340 } |
6197 | 1341 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1342 } |
1343 | |
1344 | |
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1345 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1346 if (array_klasses() != NULL) |
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1347 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1348 } |
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1349 |
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1350 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1351 if (array_klasses() != NULL) |
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1352 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1353 } |
1354 | |
1355 #ifdef ASSERT | |
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1356 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1357 int len = methods->length(); |
1358 for (int index = 0; index < len; index++) { | |
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1359 Method* m = methods->at(index); |
0 | 1360 assert(m->is_method(), "must be method"); |
1361 if (m->signature() == signature && m->name() == name) { | |
1362 return index; | |
1363 } | |
1364 } | |
1365 return -1; | |
1366 } | |
1367 #endif | |
1368 | |
6934 | 1369 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1370 int len = methods->length(); |
1371 // methods are sorted, so do binary search | |
1372 int l = 0; | |
1373 int h = len - 1; | |
1374 while (l <= h) { | |
1375 int mid = (l + h) >> 1; | |
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1376 Method* m = methods->at(mid); |
0 | 1377 assert(m->is_method(), "must be method"); |
1378 int res = m->name()->fast_compare(name); | |
1379 if (res == 0) { | |
6934 | 1380 return mid; |
0 | 1381 } else if (res < 0) { |
1382 l = mid + 1; | |
1383 } else { | |
1384 h = mid - 1; | |
1385 } | |
1386 } | |
6934 | 1387 return -1; |
1388 } | |
1389 | |
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1390 // find_method looks up the name/signature in the local methods array |
6934 | 1391 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
1392 return InstanceKlass::find_method(methods(), name, signature); | |
1393 } | |
1394 | |
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1395 // find_instance_method looks up the name/signature in the local methods array |
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1396 // and skips over static methods |
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1397 Method* InstanceKlass::find_instance_method( |
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1398 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1399 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1400 if (meth != NULL && meth->is_static()) { |
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1401 meth = NULL; |
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1402 } |
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1403 return meth; |
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1404 } |
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1405 |
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1406 // find_method looks up the name/signature in the local methods array |
6934 | 1407 Method* InstanceKlass::find_method( |
1408 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1409 int hit = find_method_index(methods, name, signature); |
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1410 return hit >= 0 ? methods->at(hit): NULL; |
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1411 } |
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1412 |
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1413 // Used directly for default_methods to find the index into the |
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1414 // default_vtable_indices, and indirectly by find_method |
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1415 // find_method_index looks in the local methods array to return the index |
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1416 // of the matching name/signature |
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1417 int InstanceKlass::find_method_index( |
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1418 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
6934 | 1419 int hit = binary_search(methods, name); |
1420 if (hit != -1) { | |
1421 Method* m = methods->at(hit); | |
1422 // Do linear search to find matching signature. First, quick check | |
1423 // for common case | |
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1424 if (m->signature() == signature) return hit; |
6934 | 1425 // search downwards through overloaded methods |
1426 int i; | |
1427 for (i = hit - 1; i >= 0; --i) { | |
1428 Method* m = methods->at(i); | |
1429 assert(m->is_method(), "must be method"); | |
1430 if (m->name() != name) break; | |
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1431 if (m->signature() == signature) return i; |
6934 | 1432 } |
1433 // search upwards | |
1434 for (i = hit + 1; i < methods->length(); ++i) { | |
1435 Method* m = methods->at(i); | |
1436 assert(m->is_method(), "must be method"); | |
1437 if (m->name() != name) break; | |
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1438 if (m->signature() == signature) return i; |
6934 | 1439 } |
1440 // not found | |
0 | 1441 #ifdef ASSERT |
6934 | 1442 int index = linear_search(methods, name, signature); |
1443 assert(index == -1, err_msg("binary search should have found entry %d", index)); | |
0 | 1444 #endif |
6934 | 1445 } |
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1446 return -1; |
0 | 1447 } |
6934 | 1448 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1449 return find_method_by_name(methods(), name, end); | |
1450 } | |
1451 | |
1452 int InstanceKlass::find_method_by_name( | |
1453 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1454 assert(end_ptr != NULL, "just checking"); | |
1455 int start = binary_search(methods, name); | |
1456 int end = start + 1; | |
1457 if (start != -1) { | |
1458 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1459 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1460 *end_ptr = end; | |
1461 return start; | |
1462 } | |
1463 return -1; | |
1464 } | |
1465 | |
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1466 // uncached_lookup_method searches both the local class methods array and all |
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1467 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1468 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const { |
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1469 Klass* klass = const_cast<InstanceKlass*>(this); |
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1470 bool dont_ignore_overpasses = true; // For the class being searched, find its overpasses. |
0 | 1471 while (klass != NULL) { |
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1472 Method* method = InstanceKlass::cast(klass)->find_method(name, signature); |
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1473 if ((method != NULL) && (dont_ignore_overpasses || !method->is_overpass())) { |
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1474 return method; |
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1475 } |
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1476 klass = InstanceKlass::cast(klass)->super(); |
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1477 dont_ignore_overpasses = false; // Ignore overpass methods in all superclasses. |
0 | 1478 } |
1479 return NULL; | |
1480 } | |
1481 | |
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1482 // lookup a method in the default methods list then in all transitive interfaces |
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1483 // Do NOT return private or static methods |
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1484 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1485 Symbol* signature) const { |
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1486 Method* m = NULL; |
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1487 if (default_methods() != NULL) { |
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1488 m = find_method(default_methods(), name, signature); |
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1489 } |
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1490 // Look up interfaces |
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1491 if (m == NULL) { |
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1492 m = lookup_method_in_all_interfaces(name, signature, false); |
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1493 } |
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1494 return m; |
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1495 } |
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1496 |
0 | 1497 // lookup a method in all the interfaces that this class implements |
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1498 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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1499 // They should only be found in the initial InterfaceMethodRef |
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1500 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
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1501 Symbol* signature, |
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1502 bool skip_default_methods) const { |
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1503 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1504 int num_ifs = all_ifs->length(); |
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1505 InstanceKlass *ik = NULL; |
0 | 1506 for (int i = 0; i < num_ifs; i++) { |
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1507 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1508 Method* m = ik->lookup_method(name, signature); |
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1509 if (m != NULL && m->is_public() && !m->is_static() && |
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1510 (!skip_default_methods || !m->is_default_method())) { |
0 | 1511 return m; |
1512 } | |
1513 } | |
1514 return NULL; | |
1515 } | |
1516 | |
1517 /* jni_id_for_impl for jfieldIds only */ | |
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1518 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1519 MutexLocker ml(JfieldIdCreation_lock); |
1520 // Retry lookup after we got the lock | |
1521 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1522 if (probe == NULL) { | |
1523 // Slow case, allocate new static field identifier | |
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1524 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1525 this_oop->set_jni_ids(probe); |
1526 } | |
1527 return probe; | |
1528 } | |
1529 | |
1530 | |
1531 /* jni_id_for for jfieldIds only */ | |
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1532 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1533 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1534 if (probe == NULL) { | |
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1535 probe = jni_id_for_impl(this, offset); |
0 | 1536 } |
1537 return probe; | |
1538 } | |
1539 | |
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1540 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1541 Array<jushort>* inner_class_list = inner_classes(); |
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1542 if (inner_class_list == NULL) { |
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1543 return 0; |
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1544 } |
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1545 int length = inner_class_list->length(); |
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1546 if (length % inner_class_next_offset == 0) { |
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1547 return 0; |
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1548 } else { |
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1549 int index = length - enclosing_method_attribute_size; |
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1550 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1551 return inner_class_list->at(index + offset); |
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1552 } |
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1553 } |
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1554 |
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1555 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1556 u2 method_index) { |
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1557 Array<jushort>* inner_class_list = inner_classes(); |
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1558 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1559 int length = inner_class_list->length(); |
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1560 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1561 int index = length - enclosing_method_attribute_size; |
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1562 inner_class_list->at_put( |
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1563 index + enclosing_method_class_index_offset, class_index); |
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1564 inner_class_list->at_put( |
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1565 index + enclosing_method_method_index_offset, method_index); |
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1566 } |
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1567 } |
0 | 1568 |
1569 // Lookup or create a jmethodID. | |
977
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1570 // This code is called by the VMThread and JavaThreads so the |
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1571 // locking has to be done very carefully to avoid deadlocks |
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1572 // and/or other cache consistency problems. |
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1573 // |
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1574 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1575 size_t idnum = (size_t)method_h->method_idnum(); |
1576 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1577 size_t length = 0; | |
1578 jmethodID id = NULL; | |
977
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1579 |
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1580 // We use a double-check locking idiom here because this cache is |
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1581 // performance sensitive. In the normal system, this cache only |
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1582 // transitions from NULL to non-NULL which is safe because we use |
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1583 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1584 // A partially constructed cache should never be seen by a racing |
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1585 // thread. We also use release_store_ptr() to save a new jmethodID |
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1586 // in the cache so a partially constructed jmethodID should never be |
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1587 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1588 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1589 // creation of the cache itself requires no leaks so a lock is |
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1590 // generally acquired in those two cases. |
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1591 // |
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1592 // If the RedefineClasses() API has been used, then this cache can |
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1593 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1594 // Cache creation requires no leaks and we require safety between all |
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1595 // cache accesses and freeing of the old cache so a lock is generally |
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1596 // acquired when the RedefineClasses() API has been used. |
0 | 1597 |
977
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1598 if (jmeths != NULL) { |
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1599 // the cache already exists |
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1600 if (!ik_h->idnum_can_increment()) { |
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1601 // the cache can't grow so we can just get the current values |
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1602 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1603 } else { |
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1604 // cache can grow so we have to be more careful |
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1605 if (Threads::number_of_threads() == 0 || |
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1606 SafepointSynchronize::is_at_safepoint()) { |
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1607 // we're single threaded or at a safepoint - no locking needed |
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1608 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1609 } else { |
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1610 MutexLocker ml(JmethodIdCreation_lock); |
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1611 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1612 } |
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1613 } |
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1614 } |
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1615 // implied else: |
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1616 // we need to allocate a cache so default length and id values are good |
0 | 1617 |
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1618 if (jmeths == NULL || // no cache yet |
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1619 length <= idnum || // cache is too short |
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1620 id == NULL) { // cache doesn't contain entry |
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1621 |
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1622 // This function can be called by the VMThread so we have to do all |
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1623 // things that might block on a safepoint before grabbing the lock. |
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1624 // Otherwise, we can deadlock with the VMThread or have a cache |
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1625 // consistency issue. These vars keep track of what we might have |
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1626 // to free after the lock is dropped. |
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1627 jmethodID to_dealloc_id = NULL; |
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1628 jmethodID* to_dealloc_jmeths = NULL; |
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1629 |
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1630 // may not allocate new_jmeths or use it if we allocate it |
0 | 1631 jmethodID* new_jmeths = NULL; |
1632 if (length <= idnum) { | |
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1633 // allocate a new cache that might be used |
0 | 1634 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1635 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1636 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1637 // cache size is stored in element[0], other elements offset by one |
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1638 new_jmeths[0] = (jmethodID)size; |
0 | 1639 } |
1640 | |
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1641 // allocate a new jmethodID that might be used |
0 | 1642 jmethodID new_id = NULL; |
1643 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1644 // The method passed in is old (but not obsolete), we need to use the current version | |
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1645 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1646 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1647 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1648 } else { |
1649 // It is the current version of the method or an obsolete method, | |
1650 // use the version passed in | |
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1651 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1652 } |
1653 | |
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1654 if (Threads::number_of_threads() == 0 || |
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1655 SafepointSynchronize::is_at_safepoint()) { |
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1656 // we're single threaded or at a safepoint - no locking needed |
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1657 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1658 &to_dealloc_id, &to_dealloc_jmeths); |
49
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1659 } else { |
0 | 1660 MutexLocker ml(JmethodIdCreation_lock); |
977
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1661 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1662 &to_dealloc_id, &to_dealloc_jmeths); |
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|
1663 } |
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|
1664 |
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1665 // The lock has been dropped so we can free resources. |
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1666 // Free up either the old cache or the new cache if we allocated one. |
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1667 if (to_dealloc_jmeths != NULL) { |
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1668 FreeHeap(to_dealloc_jmeths); |
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|
1669 } |
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1670 // free up the new ID since it wasn't needed |
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1671 if (to_dealloc_id != NULL) { |
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1672 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
49
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1673 } |
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|
1674 } |
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|
1675 return id; |
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1676 } |
0 | 1677 |
49
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1678 |
977
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1679 // Common code to fetch the jmethodID from the cache or update the |
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1680 // cache with the new jmethodID. This function should never do anything |
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1681 // that causes the caller to go to a safepoint or we can deadlock with |
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1682 // the VMThread or have cache consistency issues. |
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|
1683 // |
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1684 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
977
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1685 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1686 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1687 jmethodID** to_dealloc_jmeths_p) { |
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|
1688 assert(new_id != NULL, "sanity check"); |
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|
1689 assert(to_dealloc_id_p != NULL, "sanity check"); |
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|
1690 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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|
1691 assert(Threads::number_of_threads() == 0 || |
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1692 SafepointSynchronize::is_at_safepoint() || |
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|
1693 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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|
1694 |
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1695 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1696 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
977
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|
1697 jmethodID id = NULL; |
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1698 size_t length = 0; |
0 | 1699 |
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1700 if (jmeths == NULL || // no cache yet |
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1701 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
49
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1702 if (jmeths != NULL) { |
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|
1703 // copy any existing entries from the old cache |
49
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1704 for (size_t index = 0; index < length; index++) { |
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1705 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1706 } |
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1707 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1708 } |
49
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1709 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1710 } else { |
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1711 // fetch jmethodID (if any) from the existing cache |
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1712 id = jmeths[idnum+1]; |
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1713 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
49
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1714 } |
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1715 if (id == NULL) { |
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1716 // No matching jmethodID in the existing cache or we have a new |
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1717 // cache or we just grew the cache. This cache write is done here |
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1718 // by the first thread to win the foot race because a jmethodID |
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1719 // needs to be unique once it is generally available. |
49
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|
1720 id = new_id; |
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|
1721 |
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1722 // The jmethodID cache can be read while unlocked so we have to |
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1723 // make sure the new jmethodID is complete before installing it |
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|
1724 // in the cache. |
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|
1725 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
49
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1726 } else { |
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|
1727 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1728 } |
1729 return id; | |
1730 } | |
1731 | |
1732 | |
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1733 // Common code to get the jmethodID cache length and the jmethodID |
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1734 // value at index idnum if there is one. |
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|
1735 // |
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1736 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1737 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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|
1738 assert(cache != NULL, "sanity check"); |
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|
1739 assert(length_p != NULL, "sanity check"); |
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1740 assert(id_p != NULL, "sanity check"); |
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1741 |
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1742 // cache size is stored in element[0], other elements offset by one |
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1743 *length_p = (size_t)cache[0]; |
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1744 if (*length_p <= idnum) { // cache is too short |
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|
1745 *id_p = NULL; |
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|
1746 } else { |
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|
1747 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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|
1748 } |
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|
1749 } |
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|
1750 |
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|
1751 |
0 | 1752 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1753 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1754 size_t idnum = (size_t)method->method_idnum(); |
1755 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1756 size_t length; // length assigned as debugging crumb | |
1757 jmethodID id = NULL; | |
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1758 if (jmeths != NULL && // If there is a cache |
0 | 1759 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1760 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1761 } | |
1762 return id; | |
1763 } | |
1764 | |
1765 | |
1766 // | |
1767 // Walk the list of dependent nmethods searching for nmethods which | |
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1768 // are dependent on the changes that were passed in and mark them for |
0 | 1769 // deoptimization. Returns the number of nmethods found. |
1770 // | |
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1771 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1772 assert_locked_or_safepoint(CodeCache_lock); |
1773 int found = 0; | |
1774 nmethodBucket* b = _dependencies; | |
1775 while (b != NULL) { | |
1776 nmethod* nm = b->get_nmethod(); | |
1777 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1778 // the dependency list may contain nmethods which aren't alive. | |
1779 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1780 if (TraceDependencies) { | |
1781 ResourceMark rm; | |
1782 tty->print_cr("Marked for deoptimization"); | |
1783 tty->print_cr(" context = %s", this->external_name()); | |
1784 changes.print(); | |
1785 nm->print(); | |
1786 nm->print_dependencies(); | |
1787 } | |
1788 nm->mark_for_deoptimization(); | |
1789 found++; | |
1790 } | |
1791 b = b->next(); | |
1792 } | |
1793 return found; | |
1794 } | |
1795 | |
1796 | |
1797 // | |
1798 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1799 // It's possible that an nmethod has multiple dependencies on this klass | |
1800 // so a count is kept for each bucket to guarantee that creation and | |
1801 // deletion of dependencies is consistent. | |
1802 // | |
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1803 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1804 assert_locked_or_safepoint(CodeCache_lock); |
1805 nmethodBucket* b = _dependencies; | |
1806 nmethodBucket* last = NULL; | |
1807 while (b != NULL) { | |
1808 if (nm == b->get_nmethod()) { | |
1809 b->increment(); | |
1810 return; | |
1811 } | |
1812 b = b->next(); | |
1813 } | |
1814 _dependencies = new nmethodBucket(nm, _dependencies); | |
1815 } | |
1816 | |
1817 | |
1818 // | |
1819 // Decrement count of the nmethod in the dependency list and remove | |
1820 // the bucket competely when the count goes to 0. This method must | |
1821 // find a corresponding bucket otherwise there's a bug in the | |
1822 // recording of dependecies. | |
1823 // | |
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1824 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1825 assert_locked_or_safepoint(CodeCache_lock); |
1826 nmethodBucket* b = _dependencies; | |
1827 nmethodBucket* last = NULL; | |
1828 while (b != NULL) { | |
1829 if (nm == b->get_nmethod()) { | |
1830 if (b->decrement() == 0) { | |
1831 if (last == NULL) { | |
1832 _dependencies = b->next(); | |
1833 } else { | |
1834 last->set_next(b->next()); | |
1835 } | |
1836 delete b; | |
1837 } | |
1838 return; | |
1839 } | |
1840 last = b; | |
1841 b = b->next(); | |
1842 } | |
1843 #ifdef ASSERT | |
1844 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1845 nm->print(); | |
1846 #endif // ASSERT | |
1847 ShouldNotReachHere(); | |
1848 } | |
1849 | |
1850 | |
1851 #ifndef PRODUCT | |
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1852 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1853 nmethodBucket* b = _dependencies; |
1854 int idx = 0; | |
1855 while (b != NULL) { | |
1856 nmethod* nm = b->get_nmethod(); | |
1857 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1858 if (!verbose) { | |
1859 nm->print_on(tty, "nmethod"); | |
1860 tty->print_cr(" } "); | |
1861 } else { | |
1862 nm->print(); | |
1863 nm->print_dependencies(); | |
1864 tty->print_cr("--- } "); | |
1865 } | |
1866 b = b->next(); | |
1867 } | |
1868 } | |
1869 | |
1870 | |
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1871 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1872 nmethodBucket* b = _dependencies; |
1873 while (b != NULL) { | |
1874 if (nm == b->get_nmethod()) { | |
1875 return true; | |
1876 } | |
1877 b = b->next(); | |
1878 } | |
1879 return false; | |
1880 } | |
1881 #endif //PRODUCT | |
1882 | |
1883 | |
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1884 // Garbage collection |
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1885 |
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1886 #ifdef ASSERT |
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1887 template <class T> void assert_is_in(T *p) { |
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1888 T heap_oop = oopDesc::load_heap_oop(p); |
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1889 if (!oopDesc::is_null(heap_oop)) { |
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1890 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1891 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1892 } |
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1893 } |
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1894 template <class T> void assert_is_in_closed_subset(T *p) { |
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1895 T heap_oop = oopDesc::load_heap_oop(p); |
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1896 if (!oopDesc::is_null(heap_oop)) { |
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1897 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1898 assert(Universe::heap()->is_in_closed_subset(o), |
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1899 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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1900 } |
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1901 } |
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1902 template <class T> void assert_is_in_reserved(T *p) { |
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1903 T heap_oop = oopDesc::load_heap_oop(p); |
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1904 if (!oopDesc::is_null(heap_oop)) { |
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1905 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1906 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1907 } |
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1908 } |
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1909 template <class T> void assert_nothing(T *p) {} |
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1910 |
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1911 #else |
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1912 template <class T> void assert_is_in(T *p) {} |
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1913 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1914 template <class T> void assert_is_in_reserved(T *p) {} |
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1915 template <class T> void assert_nothing(T *p) {} |
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1916 #endif // ASSERT |
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1917 |
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1918 // |
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1919 // Macros that iterate over areas of oops which are specialized on type of |
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1920 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1921 // |
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1922 // Parameters are: |
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1923 // T - type of oop to point to (either oop or narrowOop) |
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1924 // start_p - starting pointer for region to iterate over |
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1925 // count - number of oops or narrowOops to iterate over |
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1926 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1927 // makes it more efficient to put in a macro rather than making |
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1928 // it a template function) |
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1929 // assert_fn - assert function which is template function because performance |
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1930 // doesn't matter when enabled. |
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1931 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1932 T, start_p, count, do_oop, \ |
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1933 assert_fn) \ |
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1934 { \ |
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1935 T* p = (T*)(start_p); \ |
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1936 T* const end = p + (count); \ |
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1937 while (p < end) { \ |
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1938 (assert_fn)(p); \ |
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1939 do_oop; \ |
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1940 ++p; \ |
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1941 } \ |
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1942 } |
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1943 |
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1944 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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1945 T, start_p, count, do_oop, \ |
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1946 assert_fn) \ |
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1947 { \ |
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1948 T* const start = (T*)(start_p); \ |
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1949 T* p = start + (count); \ |
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1950 while (start < p) { \ |
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1951 --p; \ |
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1952 (assert_fn)(p); \ |
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1953 do_oop; \ |
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1954 } \ |
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1955 } |
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1956 |
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1957 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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1958 T, start_p, count, low, high, \ |
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1959 do_oop, assert_fn) \ |
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1960 { \ |
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1961 T* const l = (T*)(low); \ |
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1962 T* const h = (T*)(high); \ |
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1963 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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1964 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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1965 "bounded region must be properly aligned"); \ |
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1966 T* p = (T*)(start_p); \ |
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1967 T* end = p + (count); \ |
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1968 if (p < l) p = l; \ |
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1969 if (end > h) end = h; \ |
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1970 while (p < end) { \ |
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1971 (assert_fn)(p); \ |
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1972 do_oop; \ |
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1973 ++p; \ |
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1974 } \ |
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1975 } |
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1976 |
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1977 |
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1978 // The following macros call specialized macros, passing either oop or |
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1979 // narrowOop as the specialization type. These test the UseCompressedOops |
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1980 // flag. |
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1981 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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1982 { \ |
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1983 /* Compute oopmap block range. The common case \ |
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1984 is nonstatic_oop_map_size == 1. */ \ |
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1985 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 1986 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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1987 if (UseCompressedOops) { \ |
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1988 while (map < end_map) { \ |
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1989 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 1990 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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1991 do_oop, assert_fn) \ |
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1992 ++map; \ |
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1993 } \ |
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1994 } else { \ |
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1995 while (map < end_map) { \ |
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1996 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 1997 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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1998 do_oop, assert_fn) \ |
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1999 ++map; \ |
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2000 } \ |
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2001 } \ |
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2002 } |
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2003 |
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2004 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2005 { \ |
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2006 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2007 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2008 if (UseCompressedOops) { \ |
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2009 while (start_map < map) { \ |
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2010 --map; \ |
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2011 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2012 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2013 do_oop, assert_fn) \ |
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2014 } \ |
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2015 } else { \ |
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2016 while (start_map < map) { \ |
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2017 --map; \ |
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2018 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2019 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2020 do_oop, assert_fn) \ |
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2021 } \ |
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2022 } \ |
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2023 } |
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2024 |
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2025 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2026 assert_fn) \ |
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2027 { \ |
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2028 /* Compute oopmap block range. The common case is \ |
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2029 nonstatic_oop_map_size == 1, so we accept the \ |
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2030 usually non-existent extra overhead of examining \ |
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2031 all the maps. */ \ |
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2032 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2033 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2034 if (UseCompressedOops) { \ |
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2035 while (map < end_map) { \ |
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2036 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2037 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2038 low, high, \ |
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2039 do_oop, assert_fn) \ |
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2040 ++map; \ |
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2041 } \ |
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2042 } else { \ |
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2043 while (map < end_map) { \ |
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2044 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2045 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
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2046 low, high, \ |
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2047 do_oop, assert_fn) \ |
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2048 ++map; \ |
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2049 } \ |
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2050 } \ |
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2051 } |
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2052 |
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2053 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2054 assert(obj != NULL, "can't follow the content of NULL object"); |
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2055 MarkSweep::follow_klass(obj->klass()); |
113
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2056 InstanceKlass_OOP_MAP_ITERATE( \ |
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2057 obj, \ |
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2058 MarkSweep::mark_and_push(p), \ |
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2059 assert_is_in_closed_subset) |
0 | 2060 } |
2061 | |
8001
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2062 #if INCLUDE_ALL_GCS |
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2063 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2064 oop obj) { |
113
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2065 assert(obj != NULL, "can't follow the content of NULL object"); |
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2066 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2067 // Only mark the header and let the scan of the meta-data mark |
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2068 // everything else. |
113
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2069 InstanceKlass_OOP_MAP_ITERATE( \ |
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2070 obj, \ |
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2071 PSParallelCompact::mark_and_push(cm, p), \ |
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2072 assert_is_in) |
0 | 2073 } |
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2074 #endif // INCLUDE_ALL_GCS |
0 | 2075 |
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2076 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2077 // applied to the klass ptr in the object header. |
2078 | |
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2079 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2080 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2081 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2082 "Inconsistency in do_metadata"); \ |
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2083 if (closure->do_metadata##nv_suffix()) |
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2084 |
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2085 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2086 \ |
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2087 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2088 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2089 /* header */ \ |
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2090 if_do_metadata_checked(closure, nv_suffix) { \ |
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2091 closure->do_klass##nv_suffix(obj->klass()); \ |
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2092 } \ |
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2093 InstanceKlass_OOP_MAP_ITERATE( \ |
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2094 obj, \ |
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2095 SpecializationStats:: \ |
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2096 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2097 (closure)->do_oop##nv_suffix(p), \ |
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2098 assert_is_in_closed_subset) \ |
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2099 return size_helper(); \ |
0 | 2100 } |
2101 | |
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2102 #if INCLUDE_ALL_GCS |
342
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2103 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2104 \ |
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2105 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2106 OopClosureType* closure) { \ |
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2107 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2108 /* header */ \ |
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2109 if_do_metadata_checked(closure, nv_suffix) { \ |
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2110 closure->do_klass##nv_suffix(obj->klass()); \ |
342
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2111 } \ |
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2112 /* instance variables */ \ |
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2113 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2114 obj, \ |
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2115 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2116 (closure)->do_oop##nv_suffix(p), \ |
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2117 assert_is_in_closed_subset) \ |
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2118 return size_helper(); \ |
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2119 } |
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2120 #endif // INCLUDE_ALL_GCS |
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2121 |
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2122 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2123 \ |
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2124 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2125 OopClosureType* closure, \ |
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2126 MemRegion mr) { \ |
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2127 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2128 if_do_metadata_checked(closure, nv_suffix) { \ |
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2129 if (mr.contains(obj)) { \ |
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2130 closure->do_klass##nv_suffix(obj->klass()); \ |
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2131 } \ |
113
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2132 } \ |
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2133 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2134 obj, mr.start(), mr.end(), \ |
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2135 (closure)->do_oop##nv_suffix(p), \ |
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2136 assert_is_in_closed_subset) \ |
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2137 return size_helper(); \ |
0 | 2138 } |
2139 | |
2140 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2141 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2142 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2143 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2144 #if INCLUDE_ALL_GCS |
342
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2145 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2146 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2147 #endif // INCLUDE_ALL_GCS |
0 | 2148 |
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2149 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2150 int size = size_helper(); |
113
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2151 InstanceKlass_OOP_MAP_ITERATE( \ |
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2152 obj, \ |
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2153 MarkSweep::adjust_pointer(p), \ |
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2154 assert_is_in) |
0 | 2155 return size; |
2156 } | |
2157 | |
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2158 #if INCLUDE_ALL_GCS |
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2159 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2160 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2161 obj, \ |
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2162 if (PSScavenge::should_scavenge(p)) { \ |
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2163 pm->claim_or_forward_depth(p); \ |
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2164 }, \ |
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2165 assert_nothing ) |
0 | 2166 } |
2167 | |
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2168 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2169 int size = size_helper(); |
113
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2170 InstanceKlass_OOP_MAP_ITERATE( \ |
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2171 obj, \ |
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2172 PSParallelCompact::adjust_pointer(p), \ |
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2173 assert_is_in) |
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2174 return size; |
0 | 2175 } |
2176 | |
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2177 #endif // INCLUDE_ALL_GCS |
0 | 2178 |
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2179 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2180 assert(is_loader_alive(is_alive), "this klass should be live"); |
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2181 if (is_interface()) { |
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2182 if (ClassUnloading) { |
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2183 Klass* impl = implementor(); |
5998
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2184 if (impl != NULL) { |
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2185 if (!impl->is_loader_alive(is_alive)) { |
5998
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2186 // remove this guy |
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2187 Klass** klass = adr_implementor(); |
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2188 assert(klass != NULL, "null klass"); |
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2189 if (klass != NULL) { |
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2190 *klass = NULL; |
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2191 } |
5998
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2192 } |
0 | 2193 } |
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2194 } |
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2195 } |
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2196 } |
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2197 |
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2198 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2199 for (int m = 0; m < methods()->length(); m++) { |
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2200 MethodData* mdo = methods()->at(m)->method_data(); |
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2201 if (mdo != NULL) { |
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2202 mdo->clean_method_data(is_alive); |
0 | 2203 } |
2204 } | |
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2205 } |
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2206 |
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2207 |
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2208 static void remove_unshareable_in_class(Klass* k) { |
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2209 // remove klass's unshareable info |
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2210 k->remove_unshareable_info(); |
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2211 } |
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2212 |
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2213 void InstanceKlass::remove_unshareable_info() { |
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2214 Klass::remove_unshareable_info(); |
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2215 // Unlink the class |
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2216 if (is_linked()) { |
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2217 unlink_class(); |
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2218 } |
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2219 init_implementor(); |
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2220 |
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2221 constants()->remove_unshareable_info(); |
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2222 |
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2223 for (int i = 0; i < methods()->length(); i++) { |
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2224 Method* m = methods()->at(i); |
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2225 m->remove_unshareable_info(); |
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2226 } |
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2227 |
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2228 // do array classes also. |
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2229 array_klasses_do(remove_unshareable_in_class); |
0 | 2230 } |
2231 | |
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|
2232 void restore_unshareable_in_class(Klass* k, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2233 k->restore_unshareable_info(CHECK); |
0 | 2234 } |
2235 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2236 void InstanceKlass::restore_unshareable_info(TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2237 Klass::restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2238 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2239 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2240 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2241 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2242 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2243 methodHandle m(THREAD, methods->at(index2)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2244 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
|
2245 // 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
|
2246 m->restore_vtable(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2247 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2248 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2249 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2250 // 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
|
2251 // 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
|
2252 // 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
|
2253 // 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
|
2254 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2255 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2256 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2257 } |
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 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2260 ik->constants()->restore_unshareable_info(CHECK); |
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 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
|
2263 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2264 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2265 static void clear_all_breakpoints(Method* m) { |
0 | 2266 m->clear_all_breakpoints(); |
2267 } | |
2268 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2269 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2270 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2271 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2272 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2273 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2274 } |
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 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2277 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2278 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2279 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2280 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
|
2281 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2282 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2283 ik->constants()->release_C_heap_structures(); |
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 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2286 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2287 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2288 // 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
|
2289 // 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
|
2290 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2291 |
0 | 2292 // Deallocate oop map cache |
2293 if (_oop_map_cache != NULL) { | |
2294 delete _oop_map_cache; | |
2295 _oop_map_cache = NULL; | |
2296 } | |
2297 | |
2298 // Deallocate JNI identifiers for jfieldIDs | |
2299 JNIid::deallocate(jni_ids()); | |
2300 set_jni_ids(NULL); | |
2301 | |
2302 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2303 if (jmeths != (jmethodID*)NULL) { | |
2304 release_set_methods_jmethod_ids(NULL); | |
2305 FreeHeap(jmeths); | |
2306 } | |
2307 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2308 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2309 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2310 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
|
2311 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
|
2312 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2313 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2314 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2315 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2316 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2317 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2318 |
0 | 2319 // release dependencies |
2320 nmethodBucket* b = _dependencies; | |
2321 _dependencies = NULL; | |
2322 while (b != NULL) { | |
2323 nmethodBucket* next = b->next(); | |
2324 delete b; | |
2325 b = next; | |
2326 } | |
2327 | |
2328 // Deallocate breakpoint records | |
2329 if (breakpoints() != 0x0) { | |
2330 methods_do(clear_all_breakpoints); | |
2331 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2332 } | |
2333 | |
2334 // deallocate information about previous versions | |
2335 if (_previous_versions != NULL) { | |
2336 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2337 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2338 delete pv_node; | |
2339 } | |
2340 delete _previous_versions; | |
2341 _previous_versions = NULL; | |
2342 } | |
2343 | |
2344 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2345 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2346 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2347 _cached_class_file = NULL; |
0 | 2348 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2349 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2350 // 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
|
2351 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2352 // 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
|
2353 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2354 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
|
2355 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
|
2356 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2357 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2358 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2359 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2360 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2361 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
|
2362 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2363 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2364 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2365 // 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
|
2366 // 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
|
2367 // 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
|
2368 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2369 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2370 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
|
2371 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2372 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2373 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2374 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2375 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2376 } |
0 | 2377 } |
2378 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2379 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2380 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
|
2381 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2382 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2383 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2384 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2385 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2386 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2387 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2388 // 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
|
2389 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2390 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2391 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
|
2392 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2393 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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|
2394 } |
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|
2395 |
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|
2396 // Get the internal name as a c string |
0 | 2397 const char* src = (const char*) (name()->as_C_string()); |
2398 const int src_length = (int)strlen(src); | |
12995
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|
2399 |
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diff
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|
2400 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
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farvidsson
parents:
12946
diff
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|
2401 |
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diff
changeset
|
2402 // Add L as type indicator |
0 | 2403 int dest_index = 0; |
2404 dest[dest_index++] = 'L'; | |
12995
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12946
diff
changeset
|
2405 |
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12946
diff
changeset
|
2406 // Add the actual class name |
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parents:
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diff
changeset
|
2407 for (int src_index = 0; src_index < src_length; ) { |
0 | 2408 dest[dest_index++] = src[src_index++]; |
2409 } | |
12995
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diff
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|
2410 |
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diff
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|
2411 // If we have a hash, append it |
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diff
changeset
|
2412 for (int hash_index = 0; hash_index < hash_len; ) { |
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farvidsson
parents:
12946
diff
changeset
|
2413 dest[dest_index++] = hash_buf[hash_index++]; |
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parents:
12946
diff
changeset
|
2414 } |
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diff
changeset
|
2415 |
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diff
changeset
|
2416 // Add the semicolon and the NULL |
0 | 2417 dest[dest_index++] = ';'; |
2418 dest[dest_index] = '\0'; | |
2419 return dest; | |
2420 } | |
2421 | |
2422 // different verisons of is_same_class_package | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2423 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
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|
2424 Klass* class1 = this; |
da91efe96a93
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|
2425 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2426 Symbol* classname1 = class1->name(); |
2427 | |
2428 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2429 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2430 } |
2431 oop classloader2; | |
6983 | 2432 if (class2->oop_is_instance()) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2433 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2434 } else { |
6983 | 2435 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2436 classloader2 = NULL; |
2437 } | |
6983 | 2438 Symbol* classname2 = class2->name(); |
0 | 2439 |
6725
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|
2440 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2441 classloader2, classname2); |
2442 } | |
2443 | |
6725
da91efe96a93
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|
2444 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2445 Klass* class1 = this; |
da91efe96a93
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coleenp
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diff
changeset
|
2446 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2447 Symbol* classname1 = class1->name(); |
0 | 2448 |
6725
da91efe96a93
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coleenp
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changeset
|
2449 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2450 classloader2, classname2); |
2451 } | |
2452 | |
2453 // return true if two classes are in the same package, classloader | |
2454 // and classname information is enough to determine a class's package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
2455 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
2456 oop class_loader2, Symbol* class_name2) { |
0 | 2457 if (class_loader1 != class_loader2) { |
2458 return false; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2459 } else if (class_name1 == class_name2) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2460 return true; // skip painful bytewise comparison |
0 | 2461 } else { |
2462 ResourceMark rm; | |
2463 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2464 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2465 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2466 // Otherwise, we just compare jbyte values between the strings. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2467 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2468 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
2469 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2470 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2471 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2472 |
2473 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2474 // One of the two doesn't have a package. Only return true | |
2475 // if the other one also doesn't have a package. | |
2476 return last_slash1 == last_slash2; | |
2477 } else { | |
2478 // Skip over '['s | |
2479 if (*name1 == '[') { | |
2480 do { | |
2481 name1++; | |
2482 } while (*name1 == '['); | |
2483 if (*name1 != 'L') { | |
2484 // Something is terribly wrong. Shouldn't be here. | |
2485 return false; | |
2486 } | |
2487 } | |
2488 if (*name2 == '[') { | |
2489 do { | |
2490 name2++; | |
2491 } while (*name2 == '['); | |
2492 if (*name2 != 'L') { | |
2493 // Something is terribly wrong. Shouldn't be here. | |
2494 return false; | |
2495 } | |
2496 } | |
2497 | |
2498 // Check that package part is identical | |
2499 int length1 = last_slash1 - name1; | |
2500 int length2 = last_slash2 - name2; | |
2501 | |
2502 return UTF8::equal(name1, length1, name2, length2); | |
2503 } | |
2504 } | |
2505 } | |
2506 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2507 // Returns true iff super_method can be overridden by a method in targetclassname |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2508 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2509 // Assumes name-signature match |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2510 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2511 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2512 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2513 // Private methods can not be overridden |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2514 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2515 return false; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2516 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2517 // If super method is accessible, then override |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2518 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2519 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2520 return true; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2521 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2522 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2523 assert(super_method->is_package_private(), "must be package private"); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2524 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2525 } |
0 | 2526 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2527 /* defined for now in jvm.cpp, for historical reasons *-- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2528 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2529 Symbol*& simple_name_result, TRAPS) { |
665
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 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2532 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2533 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2534 // 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
|
2535 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
changeset
|
2536 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2537 if (class2_oop == class1()) return true; |
6983 | 2538 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2539 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2540 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2541 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2542 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2543 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2544 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2545 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2546 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2547 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2548 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2549 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2550 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2551 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2552 bool ignore_inner_is_member; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2553 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2554 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2555 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2556 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2557 outer1 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2558 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
changeset
|
2559 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2560 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2561 instanceKlassHandle outer2 = class2; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2562 for (;;) { |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2563 bool ignore_inner_is_member; |
6725
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coleenp
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6266
diff
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|
2564 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
changeset
|
2565 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2566 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2567 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2568 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2569 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2570 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2571 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2572 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2573 // 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
|
2574 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2575 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2576 } |
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|
2577 |
0 | 2578 |
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2579 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2580 jint access = access_flags().as_int(); |
2581 | |
2582 // But check if it happens to be member class. | |
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2583 instanceKlassHandle ik(THREAD, this); |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2584 InnerClassesIterator iter(ik); |
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2585 for (; !iter.done(); iter.next()) { |
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2586 int ioff = iter.inner_class_info_index(); |
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2587 // Inner class attribute can be zero, skip it. |
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|
2588 // Strange but true: JVM spec. allows null inner class refs. |
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|
2589 if (ioff == 0) continue; |
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|
2590 |
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|
2591 // only look at classes that are already loaded |
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|
2592 // since we are looking for the flags for our self. |
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2593 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
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2594 if ((ik->name() == inner_name)) { |
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|
2595 // This is really a member class. |
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|
2596 access = iter.inner_access_flags(); |
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|
2597 break; |
0 | 2598 } |
2599 } | |
2600 // Remember to strip ACC_SUPER bit | |
2601 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2602 } | |
2603 | |
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2604 jint InstanceKlass::jvmti_class_status() const { |
0 | 2605 jint result = 0; |
2606 | |
2607 if (is_linked()) { | |
2608 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2609 } | |
2610 | |
2611 if (is_initialized()) { | |
2612 assert(is_linked(), "Class status is not consistent"); | |
2613 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2614 } | |
2615 if (is_in_error_state()) { | |
2616 result |= JVMTI_CLASS_STATUS_ERROR; | |
2617 } | |
2618 return result; | |
2619 } | |
2620 | |
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2621 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2622 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2623 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2624 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2625 / itableOffsetEntry::size(); | |
2626 | |
2627 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2628 // If the interface isn't implemented by the receiver class, |
0 | 2629 // the VM should throw IncompatibleClassChangeError. |
2630 if (cnt >= nof_interfaces) { | |
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2631 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2632 } |
2633 | |
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2634 Klass* ik = ioe->interface_klass(); |
0 | 2635 if (ik == holder) break; |
2636 } | |
2637 | |
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2638 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2639 Method* m = ime[index].method(); |
0 | 2640 if (m == NULL) { |
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2641 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2642 } |
2643 return m; | |
2644 } | |
2645 | |
12823
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|
2646 |
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|
2647 #if INCLUDE_JVMTI |
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|
2648 // update default_methods for redefineclasses for methods that are |
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|
2649 // not yet in the vtable due to concurrent subclass define and superinterface |
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|
2650 // redefinition |
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|
2651 // Note: those in the vtable, should have been updated via adjust_method_entries |
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|
2652 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
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|
2653 int methods_length, bool* trace_name_printed) { |
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|
2654 // search the default_methods for uses of either obsolete or EMCP methods |
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diff
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|
2655 if (default_methods() != NULL) { |
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|
2656 for (int j = 0; j < methods_length; j++) { |
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|
2657 Method* old_method = old_methods[j]; |
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|
2658 Method* new_method = new_methods[j]; |
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|
2659 |
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|
2660 for (int index = 0; index < default_methods()->length(); index ++) { |
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|
2661 if (default_methods()->at(index) == old_method) { |
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|
2662 default_methods()->at_put(index, new_method); |
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|
2663 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
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|
2664 if (!(*trace_name_printed)) { |
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|
2665 // RC_TRACE_MESG macro has an embedded ResourceMark |
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|
2666 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
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|
2667 external_name(), |
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|
2668 old_method->method_holder()->external_name())); |
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|
2669 *trace_name_printed = true; |
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|
2670 } |
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|
2671 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
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|
2672 new_method->name()->as_C_string(), |
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|
2673 new_method->signature()->as_C_string())); |
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|
2674 } |
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|
2675 } |
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|
2676 } |
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diff
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|
2677 } |
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diff
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|
2678 } |
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diff
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|
2679 } |
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diff
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|
2680 #endif // INCLUDE_JVMTI |
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|
2681 |
0 | 2682 // On-stack replacement stuff |
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|
2683 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2684 // only one compilation can be active |
2685 NEEDS_CLEANUP | |
2686 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2687 OsrList_lock->lock_without_safepoint_check(); | |
2688 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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diff
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|
2689 n->set_osr_link(osr_nmethods_head()); |
0 | 2690 set_osr_nmethods_head(n); |
1783 | 2691 // Raise the highest osr level if necessary |
2692 if (TieredCompilation) { | |
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|
2693 Method* m = n->method(); |
1783 | 2694 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2695 } | |
0 | 2696 // Remember to unlock again |
2697 OsrList_lock->unlock(); | |
1783 | 2698 |
2699 // Get rid of the osr methods for the same bci that have lower levels. | |
2700 if (TieredCompilation) { | |
2701 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2702 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2703 if (inv != NULL && inv->is_in_use()) { | |
2704 inv->make_not_entrant(); | |
2705 } | |
2706 } | |
2707 } | |
0 | 2708 } |
2709 | |
2710 | |
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|
2711 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2712 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2713 OsrList_lock->lock_without_safepoint_check(); | |
2714 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2715 nmethod* last = NULL; | |
2716 nmethod* cur = osr_nmethods_head(); | |
1783 | 2717 int max_level = CompLevel_none; // Find the max comp level excluding n |
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2718 Method* m = n->method(); |
0 | 2719 // Search for match |
2720 while(cur != NULL && cur != n) { | |
14504
47f00f3b3900
8034188: OSR methods may not be recompiled at proper compilation level
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diff
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|
2721 if (TieredCompilation && m == cur->method()) { |
1783 | 2722 // Find max level before n |
2723 max_level = MAX2(max_level, cur->comp_level()); | |
2724 } | |
0 | 2725 last = cur; |
989
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|
2726 cur = cur->osr_link(); |
0 | 2727 } |
1783 | 2728 nmethod* next = NULL; |
0 | 2729 if (cur == n) { |
1783 | 2730 next = cur->osr_link(); |
0 | 2731 if (last == NULL) { |
2732 // Remove first element | |
1783 | 2733 set_osr_nmethods_head(next); |
0 | 2734 } else { |
1783 | 2735 last->set_osr_link(next); |
0 | 2736 } |
2737 } | |
989
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|
2738 n->set_osr_link(NULL); |
1783 | 2739 if (TieredCompilation) { |
2740 cur = next; | |
2741 while (cur != NULL) { | |
2742 // Find max level after n | |
14504
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8034188: OSR methods may not be recompiled at proper compilation level
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14500
diff
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|
2743 if (m == cur->method()) { |
47f00f3b3900
8034188: OSR methods may not be recompiled at proper compilation level
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diff
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|
2744 max_level = MAX2(max_level, cur->comp_level()); |
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|
2745 } |
1783 | 2746 cur = cur->osr_link(); |
2747 } | |
2748 m->set_highest_osr_comp_level(max_level); | |
2749 } | |
0 | 2750 // Remember to unlock again |
2751 OsrList_lock->unlock(); | |
2752 } | |
2753 | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
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10152
diff
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|
2754 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2755 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2756 OsrList_lock->lock_without_safepoint_check(); | |
2757 nmethod* osr = osr_nmethods_head(); | |
1783 | 2758 nmethod* best = NULL; |
0 | 2759 while (osr != NULL) { |
2760 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2761 // There can be a time when a c1 osr method exists but we are waiting |
2762 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2763 // the c1 version and only be able to find the c2 version. However | |
2764 // while we overflow in the c1 code at back branches we don't want to | |
2765 // try and switch to the same code as we are already running | |
2766 | |
0 | 2767 if (osr->method() == m && |
2768 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2769 if (match_level) { |
2770 if (osr->comp_level() == comp_level) { | |
2771 // Found a match - return it. | |
2772 OsrList_lock->unlock(); | |
2773 return osr; | |
2774 } | |
2775 } else { | |
2776 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2777 if (osr->comp_level() == CompLevel_highest_tier) { | |
2778 // Found the best possible - return it. | |
2779 OsrList_lock->unlock(); | |
2780 return osr; | |
2781 } | |
2782 best = osr; | |
2783 } | |
2784 } | |
0 | 2785 } |
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|
2786 osr = osr->osr_link(); |
0 | 2787 } |
2788 OsrList_lock->unlock(); | |
1783 | 2789 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2790 return best; | |
2791 } | |
0 | 2792 return NULL; |
2793 } | |
2794 | |
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|
2795 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2796 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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9062
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|
2797 MutexLocker ml(MemberNameTable_lock); |
10345
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|
2798 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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9062
diff
changeset
|
2799 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
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9062
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|
2800 |
6337ca4dcad8
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9062
diff
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|
2801 if (_member_names == NULL) { |
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|
2802 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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|
2803 } |
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changeset
|
2804 _member_names->add_member_name(index, mem_name_wref); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2805 } |
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changeset
|
2806 |
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diff
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|
2807 oop InstanceKlass::get_member_name(int index) { |
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diff
changeset
|
2808 MutexLocker ml(MemberNameTable_lock); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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diff
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|
2809 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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diff
changeset
|
2810 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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|
2811 |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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diff
changeset
|
2812 if (_member_names == NULL) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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parents:
10343
diff
changeset
|
2813 return NULL; |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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diff
changeset
|
2814 } |
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8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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parents:
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diff
changeset
|
2815 oop mem_name =_member_names->get_member_name(index); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
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10343
diff
changeset
|
2816 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2817 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
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9062
diff
changeset
|
2818 |
0 | 2819 // ----------------------------------------------------------------------------------------------------- |
6725
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|
2820 // Printing |
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|
2821 |
0 | 2822 #ifndef PRODUCT |
2823 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2824 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
changeset
|
2825 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2826 static const char* state_names[] = { |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2827 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
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6964458: Reimplement class meta-data storage to use native memory
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|
2828 }; |
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|
2829 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
2830 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
2831 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
changeset
|
2832 intptr_t e = start[i]; |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
2833 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
2834 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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12067
diff
changeset
|
2835 st->print(" "); |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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12067
diff
changeset
|
2836 ((Metadata*)e)->print_value_on(st); |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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12067
diff
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|
2837 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
12067
diff
changeset
|
2838 st->cr(); |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
12067
diff
changeset
|
2839 } |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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parents:
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diff
changeset
|
2840 } |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
2841 |
6725
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|
2842 void InstanceKlass::print_on(outputStream* st) const { |
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6964458: Reimplement class meta-data storage to use native memory
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|
2843 assert(is_klass(), "must be klass"); |
da91efe96a93
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|
2844 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2845 |
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6964458: Reimplement class meta-data storage to use native memory
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|
2846 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
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|
2847 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
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|
2848 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2849 st->print(BULLET"state: "); st->print_cr(state_names[_init_state]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2850 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2851 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2852 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2853 Klass* sub = subklass(); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2854 int n; |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2855 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2856 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2857 sub->print_value_on(st); |
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|
2858 st->print(" "); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2859 } |
da91efe96a93
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diff
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|
2860 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2861 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2862 st->cr(); |
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coleenp
parents:
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diff
changeset
|
2863 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2864 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2865 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
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coleenp
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6266
diff
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|
2866 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2867 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2868 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2869 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2870 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2871 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2872 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2873 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2874 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2875 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2876 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2877 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2878 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2879 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2880 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2881 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2882 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2883 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2884 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2885 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2886 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2887 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2888 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2889 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2890 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2891 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2892 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2893 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2894 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2895 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2896 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2897 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2898 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2899 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2900 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2901 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2902 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2903 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2904 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2905 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2906 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2907 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2908 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2909 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2910 st->cr(); |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
2911 } |
8031 | 2912 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
2913 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
2914 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
2915 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
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|
2916 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2917 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2918 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2919 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2920 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2921 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2922 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2923 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2924 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2925 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2926 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2927 } // pvw is cleaned up |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
2928 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2929 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2930 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2931 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2932 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2933 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2934 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2935 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2936 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2937 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2938 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2939 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2940 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2941 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2942 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2943 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2944 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2945 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2946 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2947 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2948 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2949 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2950 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2951 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2952 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2953 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2954 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2956 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2957 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2958 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2959 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2960 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
|
2961 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2962 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2963 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2964 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2965 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2966 |
0 | 2967 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2968 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2969 if (_obj == NULL) { |
0 | 2970 fd->print_on(_st); |
2971 _st->cr(); | |
2972 } else { | |
2973 fd->print_on_for(_st, _obj); | |
2974 _st->cr(); | |
2975 } | |
2976 } | |
2977 | |
2978 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2979 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 2980 Klass::oop_print_on(obj, st); |
2981 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2982 if (this == SystemDictionary::String_klass()) { |
0 | 2983 typeArrayOop value = java_lang_String::value(obj); |
2984 juint offset = java_lang_String::offset(obj); | |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
2985 if (value != NULL) { |
0 | 2986 juint length = java_lang_String::length(obj); |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
2987 if (value->is_typeArray() && |
0 | 2988 offset <= (juint) value->length() && |
2989 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2990 st->print(BULLET"string: "); |
14491
301df27023d4
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
14465
diff
changeset
|
2991 java_lang_String::print(obj, st); |
0 | 2992 st->cr(); |
2993 if (!WizardMode) return; // that is enough | |
2994 } | |
2995 } | |
13714
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
2996 } |
0 | 2997 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2998 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
|
2999 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3000 do_nonstatic_fields(&print_field); |
0 | 3001 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3002 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3003 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3004 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3005 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3006 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3007 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3008 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3009 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3010 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3011 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 array_klass->print_value_on_maybe_null(st); |
0 | 3013 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3014 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
|
3015 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
|
3016 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
|
3017 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
|
3018 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
|
3019 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3020 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3021 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3022 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3023 st->cr(); |
0 | 3024 } |
3025 } | |
3026 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3027 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3028 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3029 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3030 st->print("a "); |
3031 name()->print_value_on(st); | |
3032 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3033 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3034 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3035 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3036 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3037 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3038 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3039 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3040 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3041 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3042 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3043 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3044 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3045 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3046 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3047 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3048 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3049 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3050 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3051 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3052 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3053 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3054 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3055 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3056 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3057 } 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
|
3058 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
|
3059 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3060 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3061 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3062 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3063 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3064 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
|
3065 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3066 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3067 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3068 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3069 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
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3070 st->print("."); |
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3071 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
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3072 } |
665
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3073 } |
0 | 3074 } |
3075 | |
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3076 const char* InstanceKlass::internal_name() const { |
0 | 3077 return external_name(); |
3078 } | |
3079 | |
7956 | 3080 #if INCLUDE_SERVICES |
3081 // Size Statistics | |
3082 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3083 Klass::collect_statistics(sz); | |
3084 | |
3085 sz->_inst_size = HeapWordSize * size_helper(); | |
3086 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3087 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3088 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3089 ((is_interface() || is_anonymous()) ? | |
3090 align_object_offset(nonstatic_oop_map_size()) : | |
3091 nonstatic_oop_map_size()); | |
3092 | |
3093 int n = 0; | |
3094 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3095 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3096 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3097 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3098 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3099 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3100 sz->_ro_bytes += n; | |
3101 | |
3102 const ConstantPool* cp = constants(); | |
3103 if (cp) { | |
3104 cp->collect_statistics(sz); | |
3105 } | |
3106 | |
3107 const Annotations* anno = annotations(); | |
3108 if (anno) { | |
3109 anno->collect_statistics(sz); | |
3110 } | |
3111 | |
3112 const Array<Method*>* methods_array = methods(); | |
3113 if (methods()) { | |
3114 for (int i = 0; i < methods_array->length(); i++) { | |
3115 Method* method = methods_array->at(i); | |
3116 if (method) { | |
3117 sz->_method_count ++; | |
3118 method->collect_statistics(sz); | |
3119 } | |
3120 } | |
3121 } | |
3122 } | |
3123 #endif // INCLUDE_SERVICES | |
3124 | |
0 | 3125 // Verification |
3126 | |
3127 class VerifyFieldClosure: public OopClosure { | |
113
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3128 protected: |
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3129 template <class T> void do_oop_work(T* p) { |
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3130 oop obj = oopDesc::load_decode_heap_oop(p); |
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3131 if (!obj->is_oop_or_null()) { |
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3132 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3133 Universe::print(); |
3134 guarantee(false, "boom"); | |
3135 } | |
3136 } | |
113
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3137 public: |
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3138 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3139 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3140 }; |
3141 | |
14378
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3142 void InstanceKlass::verify_on(outputStream* st) { |
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3143 #ifndef PRODUCT |
11034 | 3144 // Avoid redundant verifies, this really should be in product. |
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3145 if (_verify_count == Universe::verify_count()) return; |
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3146 _verify_count = Universe::verify_count(); |
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3147 #endif |
11034 | 3148 |
3149 // Verify Klass | |
14378
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3150 Klass::verify_on(st); |
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3151 |
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3152 // Verify that klass is present in ClassLoaderData |
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3153 guarantee(class_loader_data()->contains_klass(this), |
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3154 "this class isn't found in class loader data"); |
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3155 |
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3156 // Verify vtables |
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3157 if (is_linked()) { |
11034 | 3158 ResourceMark rm; |
6725
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3159 // $$$ This used to be done only for m/s collections. Doing it |
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3160 // always seemed a valid generalization. (DLD -- 6/00) |
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3161 vtable()->verify(st); |
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3162 } |
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3163 |
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3164 // Verify first subklass |
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3165 if (subklass_oop() != NULL) { |
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3166 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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3167 } |
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3168 |
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3169 // Verify siblings |
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3170 Klass* super = this->super(); |
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3171 Klass* sib = next_sibling(); |
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3172 if (sib != NULL) { |
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3173 if (sib == this) { |
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3174 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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3175 } |
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|
3176 |
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3177 guarantee(sib->is_klass(), "should be klass"); |
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3178 guarantee(sib->super() == super, "siblings should have same superklass"); |
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3179 } |
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3180 |
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3181 // Verify implementor fields |
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3182 Klass* im = implementor(); |
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3183 if (im != NULL) { |
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|
3184 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3185 guarantee(im->is_klass(), "should be klass"); |
6983 | 3186 guarantee(!im->is_interface() || im == this, |
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3187 "implementors cannot be interfaces"); |
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|
3188 } |
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|
3189 |
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3190 // Verify local interfaces |
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3191 if (local_interfaces()) { |
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3192 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3193 for (int j = 0; j < local_interfaces->length(); j++) { |
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3194 Klass* e = local_interfaces->at(j); |
6983 | 3195 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3196 } |
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|
3197 } |
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|
3198 |
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3199 // Verify transitive interfaces |
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3200 if (transitive_interfaces() != NULL) { |
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3201 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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3202 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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3203 Klass* e = transitive_interfaces->at(j); |
6983 | 3204 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3205 } |
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|
3206 } |
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|
3207 |
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3208 // Verify methods |
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3209 if (methods() != NULL) { |
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3210 Array<Method*>* methods = this->methods(); |
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3211 for (int j = 0; j < methods->length(); j++) { |
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3212 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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3213 } |
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3214 for (int j = 0; j < methods->length() - 1; j++) { |
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3215 Method* m1 = methods->at(j); |
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3216 Method* m2 = methods->at(j + 1); |
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3217 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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3218 } |
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|
3219 } |
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|
3220 |
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3221 // Verify method ordering |
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3222 if (method_ordering() != NULL) { |
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3223 Array<int>* method_ordering = this->method_ordering(); |
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3224 int length = method_ordering->length(); |
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3225 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
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|
3226 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
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3227 guarantee(length == methods()->length(), "invalid method ordering length"); |
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3228 jlong sum = 0; |
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3229 for (int j = 0; j < length; j++) { |
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3230 int original_index = method_ordering->at(j); |
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3231 guarantee(original_index >= 0, "invalid method ordering index"); |
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3232 guarantee(original_index < length, "invalid method ordering index"); |
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3233 sum += original_index; |
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|
3234 } |
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3235 // Verify sum of indices 0,1,...,length-1 |
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3236 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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3237 } else { |
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3238 guarantee(length == 0, "invalid method ordering length"); |
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3239 } |
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3240 } |
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|
3241 |
12823
ac9cb1d5a202
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diff
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|
3242 // Verify default methods |
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|
3243 if (default_methods() != NULL) { |
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changeset
|
3244 Array<Method*>* methods = this->default_methods(); |
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
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|
3245 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3246 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3247 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3248 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3249 Method* m1 = methods->at(j); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3250 Method* m2 = methods->at(j + 1); |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3251 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3252 } |
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8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3253 } |
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diff
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|
3254 |
6725
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|
3255 // Verify JNI static field identifiers |
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|
3256 if (jni_ids() != NULL) { |
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|
3257 jni_ids()->verify(this); |
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|
3258 } |
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|
3259 |
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|
3260 // Verify other fields |
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|
3261 if (array_klasses() != NULL) { |
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|
3262 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3263 } |
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|
3264 if (constants() != NULL) { |
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|
3265 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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|
3266 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
3267 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
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diff
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|
3268 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
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diff
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|
3269 guarantee(host->is_klass(), "should be klass"); |
6725
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|
3270 } |
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|
3271 } |
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|
3272 |
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|
3273 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3274 Klass::oop_verify_on(obj, st); |
3275 VerifyFieldClosure blk; | |
6725
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3276 obj->oop_iterate_no_header(&blk); |
0 | 3277 } |
3278 | |
6725
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3279 |
113
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diff
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|
3280 // JNIid class for jfieldIDs only |
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diff
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|
3281 // Note to reviewers: |
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diff
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|
3282 // These JNI functions are just moved over to column 1 and not changed |
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|
3283 // in the compressed oops workspace. |
6725
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3284 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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|
3285 _holder = holder; |
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|
3286 _offset = offset; |
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diff
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|
3287 _next = next; |
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|
3288 debug_only(_is_static_field_id = false;) |
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|
3289 } |
0 | 3290 |
3291 | |
113
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|
3292 JNIid* JNIid::find(int offset) { |
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diff
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|
3293 JNIid* current = this; |
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diff
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|
3294 while (current != NULL) { |
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diff
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|
3295 if (current->offset() == offset) return current; |
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diff
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|
3296 current = current->next(); |
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diff
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|
3297 } |
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diff
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|
3298 return NULL; |
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diff
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|
3299 } |
0 | 3300 |
3301 void JNIid::deallocate(JNIid* current) { | |
113
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|
3302 while (current != NULL) { |
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diff
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|
3303 JNIid* next = current->next(); |
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diff
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|
3304 delete current; |
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diff
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|
3305 current = next; |
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diff
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|
3306 } |
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diff
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|
3307 } |
0 | 3308 |
3309 | |
6725
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|
3310 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
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|
3311 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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|
3312 int end_field_offset; |
6725
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3313 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3314 |
113
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diff
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|
3315 JNIid* current = this; |
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diff
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|
3316 while (current != NULL) { |
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diff
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|
3317 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
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52
diff
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|
3318 #ifdef ASSERT |
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52
diff
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|
3319 int o = current->offset(); |
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diff
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|
3320 if (current->is_static_field_id()) { |
ba764ed4b6f2
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diff
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|
3321 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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diff
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|
3322 } |
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coleenp
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52
diff
changeset
|
3323 #endif |
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diff
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|
3324 current = current->next(); |
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diff
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|
3325 } |
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52
diff
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|
3326 } |
0 | 3327 |
3328 | |
3329 #ifdef ASSERT | |
6725
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|
3330 void InstanceKlass::set_init_state(ClassState state) { |
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|
3331 bool good_state = is_shared() ? (_init_state <= state) |
113
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|
3332 : (_init_state < state); |
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diff
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|
3333 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
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4006
diff
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|
3334 _init_state = (u1)state; |
113
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|
3335 } |
0 | 3336 #endif |
3337 | |
3338 | |
3339 // RedefineClasses() support for previous versions: | |
3340 | |
6725
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|
3341 // Purge previous versions |
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|
3342 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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|
3343 if (ik->previous_versions() != NULL) { |
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|
3344 // This klass has previous versions so see what we can cleanup |
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|
3345 // while it is safe to do so. |
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|
3346 |
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|
3347 int deleted_count = 0; // leave debugging breadcrumbs |
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|
3348 int live_count = 0; |
da91efe96a93
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|
3349 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3350 ClassLoaderData::the_null_class_loader_data() : |
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|
3351 ik->class_loader_data(); |
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|
3352 |
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|
3353 // RC_TRACE macro has an embedded ResourceMark |
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|
3354 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3355 ik->external_name(), ik->previous_versions()->length())); |
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|
3356 |
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|
3357 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3358 // check the previous versions array |
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|
3359 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3360 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3361 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3362 |
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|
3363 ConstantPool* pvcp = cp_ref; |
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|
3364 if (!pvcp->on_stack()) { |
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|
3365 // If the constant pool isn't on stack, none of the methods |
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|
3366 // are executing. Delete all the methods, the constant pool and |
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|
3367 // and this previous version node. |
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|
3368 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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|
3369 if (method_refs != NULL) { |
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|
3370 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3371 Method* method = method_refs->at(j); |
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|
3372 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3373 method_refs->remove_at(j); |
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|
3374 // method will be freed with associated class. |
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|
3375 } |
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|
3376 } |
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|
3377 // Remove the constant pool |
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|
3378 delete pv_node; |
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|
3379 // Since we are traversing the array backwards, we don't have to |
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|
3380 // do anything special with the index. |
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changeset
|
3381 ik->previous_versions()->remove_at(i); |
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diff
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|
3382 deleted_count++; |
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diff
changeset
|
3383 continue; |
da91efe96a93
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diff
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|
3384 } else { |
da91efe96a93
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diff
changeset
|
3385 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
da91efe96a93
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diff
changeset
|
3386 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
da91efe96a93
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diff
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|
3387 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
da91efe96a93
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|
3388 live_count++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3389 } |
da91efe96a93
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diff
changeset
|
3390 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3391 // At least one method is live in this previous version, clean out |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3392 // the others or mark them as obsolete. |
da91efe96a93
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diff
changeset
|
3393 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
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diff
changeset
|
3394 if (method_refs != NULL) { |
da91efe96a93
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diff
changeset
|
3395 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3396 method_refs->length())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
3397 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
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coleenp
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6266
diff
changeset
|
3398 Method* method = method_refs->at(j); |
da91efe96a93
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coleenp
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diff
changeset
|
3399 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3400 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3401 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3402 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
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diff
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|
3403 // 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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|
3404 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3405 method_refs->remove_at(j); |
da91efe96a93
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diff
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|
3406 } else if (emcp_method_count == 0) { |
da91efe96a93
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diff
changeset
|
3407 method->set_is_obsolete(); |
da91efe96a93
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diff
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|
3408 } else { |
da91efe96a93
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diff
changeset
|
3409 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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diff
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|
3410 RC_TRACE(0x00000200, |
da91efe96a93
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6266
diff
changeset
|
3411 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3412 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3413 method->signature()->as_C_string(), j, i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3414 } |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
3415 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3416 } |
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
coleenp
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diff
changeset
|
3418 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
|
3419 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3420 ("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
|
3421 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3422 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3423 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3424 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3425 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3426 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3427 // 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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6266
diff
changeset
|
3428 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3429 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3430 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3431 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3432 // Potentially add an information node that contains pointers to the |
0 | 3433 // 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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6266
diff
changeset
|
3434 // 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
|
3435 // 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
|
3436 // 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
|
3437 // 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
|
3438 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3439 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
|
3440 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3441 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
|
3442 "only VMThread can add previous versions"); |
0 | 3443 |
3444 if (_previous_versions == NULL) { | |
3445 // This is the first previous version so make some space. | |
3446 // Start with 2 elements under the assumption that the class | |
3447 // won't be redefined much. | |
6197 | 3448 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3449 GrowableArray<PreviousVersionNode *>(2, true); |
3450 } | |
3451 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3452 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3453 |
0 | 3454 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3455 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
|
3456 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3457 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
|
3458 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3459 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3460 // 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
|
3461 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3462 // 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
|
3463 // 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
|
3464 // 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
|
3465 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3466 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3467 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3468 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3469 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3470 // 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
|
3471 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
|
3472 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3473 ("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
|
3474 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3475 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3476 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
|
3477 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3478 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
|
3479 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3480 // 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
|
3481 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
|
3482 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3483 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3484 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3485 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3486 // 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
|
3487 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3488 } |
0 | 3489 } |
3490 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3491 // 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
|
3492 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
|
3493 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3494 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3495 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3496 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3497 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3498 // 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
|
3499 // is a good time to clear out unused references. |
0 | 3500 |
3501 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3502 _previous_versions->length())); | |
3503 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3504 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3505 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3506 |
3507 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3508 | |
3509 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
|
3510 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3511 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3512 // clear out any matching EMCP method entries the hard way. |
3513 int local_count = 0; | |
3514 for (int i = 0; i < old_methods->length(); i++) { | |
3515 if (!emcp_methods->at(i)) { | |
3516 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3517 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3518 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3519 Symbol* m_signature = old_method->signature(); |
0 | 3520 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3521 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3522 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
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3523 // check the previous versions array for non executing obsolete methods |
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3524 PreviousVersionNode * pv_node = _previous_versions->at(j); |
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3525 |
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3526 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3527 if (method_refs == NULL) { |
3528 // We have run into a PreviousVersion generation where | |
3529 // all methods were made obsolete during that generation's | |
3530 // RedefineClasses() operation. At the time of that | |
3531 // operation, all EMCP methods were flushed so we don't | |
3532 // have to go back any further. | |
3533 // | |
3534 // A NULL method_refs is different than an empty method_refs. | |
3535 // We cannot infer any optimizations about older generations | |
3536 // from an empty method_refs for the current generation. | |
3537 break; | |
3538 } | |
3539 | |
3540 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
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3541 Method* method = method_refs->at(k); |
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3542 |
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3543 if (!method->is_obsolete() && |
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3544 method->name() == m_name && |
0 | 3545 method->signature() == m_signature) { |
3546 // The current RedefineClasses() call has made all EMCP | |
3547 // versions of this method obsolete so mark it as obsolete | |
6725
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3548 // and remove the reference. |
0 | 3549 RC_TRACE(0x00000400, |
3550 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3551 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3552 | |
3553 method->set_is_obsolete(); | |
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3554 // Leave obsolete methods on the previous version list to |
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3555 // clean up later. |
0 | 3556 break; |
3557 } | |
3558 } | |
3559 | |
3560 // The previous loop may not find a matching EMCP method, but | |
3561 // that doesn't mean that we can optimize and not go any | |
3562 // further back in the PreviousVersion generations. The EMCP | |
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3563 // method for this generation could have already been deleted, |
0 | 3564 // but there still may be an older EMCP method that has not |
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3565 // been deleted. |
0 | 3566 } |
3567 | |
3568 if (++local_count >= obsolete_method_count) { | |
3569 // no more obsolete methods so bail out now | |
3570 break; | |
3571 } | |
3572 } | |
3573 } | |
3574 } | |
3575 } // end add_previous_version() | |
3576 | |
3577 | |
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3578 // Determine if InstanceKlass has a previous version. |
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3579 bool InstanceKlass::has_previous_version() const { |
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3580 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3581 } // end has_previous_version() |
3582 | |
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3583 |
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3584 Method* InstanceKlass::method_with_idnum(int idnum) { |
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3585 Method* m = NULL; |
0 | 3586 if (idnum < methods()->length()) { |
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3587 m = methods()->at(idnum); |
0 | 3588 } |
3589 if (m == NULL || m->method_idnum() != idnum) { | |
3590 for (int index = 0; index < methods()->length(); ++index) { | |
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3591 m = methods()->at(index); |
0 | 3592 if (m->method_idnum() == idnum) { |
3593 return m; | |
3594 } | |
3595 } | |
12281
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3596 // None found, return null for the caller to handle. |
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3597 return NULL; |
0 | 3598 } |
3599 return m; | |
3600 } | |
3601 | |
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3602 jint InstanceKlass::get_cached_class_file_len() { |
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3603 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
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3604 } |
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3605 |
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3606 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
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3607 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
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3608 } |
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3609 |
0 | 3610 |
3611 // Construct a PreviousVersionNode entry for the array hung off | |
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3612 // the InstanceKlass. |
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3613 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
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3614 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3615 |
3616 _prev_constant_pool = prev_constant_pool; | |
3617 _prev_EMCP_methods = prev_EMCP_methods; | |
3618 } | |
3619 | |
3620 | |
3621 // Destroy a PreviousVersionNode | |
3622 PreviousVersionNode::~PreviousVersionNode() { | |
3623 if (_prev_constant_pool != NULL) { | |
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3624 _prev_constant_pool = NULL; |
0 | 3625 } |
3626 | |
3627 if (_prev_EMCP_methods != NULL) { | |
3628 delete _prev_EMCP_methods; | |
3629 } | |
3630 } | |
3631 | |
3632 // Construct a helper for walking the previous versions array | |
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3633 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
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3634 _thread = thread; |
0 | 3635 _previous_versions = ik->previous_versions(); |
3636 _current_index = 0; | |
3637 _current_p = NULL; | |
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3638 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3639 } |
3640 | |
3641 | |
3642 // Return the interesting information for the next previous version | |
3643 // of the klass. Returns NULL if there are no more previous versions. | |
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3644 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3645 if (_previous_versions == NULL) { |
3646 // no previous versions so nothing to return | |
3647 return NULL; | |
3648 } | |
3649 | |
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3650 _current_p = NULL; // reset to NULL |
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3651 _current_constant_pool_handle = NULL; |
0 | 3652 |
3653 int length = _previous_versions->length(); | |
3654 | |
3655 while (_current_index < length) { | |
3656 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
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3657 |
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3658 // Save a handle to the constant pool for this previous version, |
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3659 // which keeps all the methods from being deallocated. |
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3660 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3661 _current_p = pv_node; |
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3662 return pv_node; |
0 | 3663 } |
3664 | |
3665 return NULL; | |
3666 } // end next_previous_version() |