Mercurial > hg > truffle
annotate src/share/vm/oops/instanceKlass.cpp @ 15306:7e0563f0d249
Rename LIRFrameStateBuilder to BaselineFrameStateBuilder.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Tue, 22 Apr 2014 20:16:38 +0200 |
parents | bd4c7b669bd8 |
children | af0e42dad358 |
rev | line source |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/verifier.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_implementation/shared/markSweep.inline.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "interpreter/oopMapCache.hpp" | |
34 #include "interpreter/rewriter.hpp" | |
35 #include "jvmtifiles/jvmti.h" | |
36 #include "memory/genOopClosures.inline.hpp" | |
7956 | 37 #include "memory/heapInspection.hpp" |
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38 #include "memory/metadataFactory.hpp" |
1972 | 39 #include "memory/oopFactory.hpp" |
3938 | 40 #include "oops/fieldStreams.hpp" |
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41 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 42 #include "oops/instanceKlass.hpp" |
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43 #include "oops/instanceMirrorKlass.hpp" |
1972 | 44 #include "oops/instanceOop.hpp" |
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45 #include "oops/klass.inline.hpp" |
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46 #include "oops/method.hpp" |
1972 | 47 #include "oops/oop.inline.hpp" |
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48 #include "oops/symbol.hpp" |
1972 | 49 #include "prims/jvmtiExport.hpp" |
50 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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51 #include "prims/jvmtiRedefineClasses.hpp" |
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52 #include "prims/methodComparator.hpp" |
1972 | 53 #include "runtime/fieldDescriptor.hpp" |
54 #include "runtime/handles.inline.hpp" | |
55 #include "runtime/javaCalls.hpp" | |
56 #include "runtime/mutexLocker.hpp" | |
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57 #include "runtime/thread.inline.hpp" |
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58 #include "services/classLoadingService.hpp" |
1972 | 59 #include "services/threadService.hpp" |
60 #include "utilities/dtrace.hpp" | |
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61 #include "utilities/macros.hpp" |
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62 #if INCLUDE_ALL_GCS |
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63 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 64 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
65 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
66 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
67 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
68 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
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69 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 70 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
71 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
72 #include "oops/oop.pcgc.inline.hpp" | |
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73 #endif // INCLUDE_ALL_GCS |
1972 | 74 #ifdef COMPILER1 |
75 #include "c1/c1_Compiler.hpp" | |
76 #endif | |
0 | 77 |
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78 #ifdef DTRACE_ENABLED |
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79 |
14909 | 80 #ifndef USDT2 |
81 | |
82 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, | |
83 char*, intptr_t, oop, intptr_t); | |
84 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, | |
85 char*, intptr_t, oop, intptr_t, int); | |
86 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, | |
87 char*, intptr_t, oop, intptr_t, int); | |
88 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, | |
89 char*, intptr_t, oop, intptr_t, int); | |
90 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, | |
91 char*, intptr_t, oop, intptr_t, int); | |
92 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, | |
93 char*, intptr_t, oop, intptr_t, int); | |
94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, | |
95 char*, intptr_t, oop, intptr_t, int); | |
96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, | |
97 char*, intptr_t, oop, intptr_t, int); | |
98 | |
99 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
100 { \ | |
101 char* data = NULL; \ | |
102 int len = 0; \ | |
103 Symbol* name = (clss)->name(); \ | |
104 if (name != NULL) { \ | |
105 data = (char*)name->bytes(); \ | |
106 len = name->utf8_length(); \ | |
107 } \ | |
108 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ | |
109 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type); \ | |
110 } | |
111 | |
112 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
113 { \ | |
114 char* data = NULL; \ | |
115 int len = 0; \ | |
116 Symbol* name = (clss)->name(); \ | |
117 if (name != NULL) { \ | |
118 data = (char*)name->bytes(); \ | |
119 len = name->utf8_length(); \ | |
120 } \ | |
121 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ | |
122 data, len, SOLARIS_ONLY((void *))(clss)->class_loader(), thread_type, wait); \ | |
123 } | |
124 #else /* USDT2 */ | |
4006 | 125 |
126 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
127 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
128 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
129 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
130 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
131 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
132 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
133 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
134 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
135 { \ | |
136 char* data = NULL; \ | |
137 int len = 0; \ | |
138 Symbol* name = (clss)->name(); \ | |
139 if (name != NULL) { \ | |
140 data = (char*)name->bytes(); \ | |
141 len = name->utf8_length(); \ | |
142 } \ | |
143 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
144 data, len, (clss)->class_loader(), thread_type); \ | |
145 } | |
146 | |
147 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
148 { \ | |
149 char* data = NULL; \ | |
150 int len = 0; \ | |
151 Symbol* name = (clss)->name(); \ | |
152 if (name != NULL) { \ | |
153 data = (char*)name->bytes(); \ | |
154 len = name->utf8_length(); \ | |
155 } \ | |
156 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
157 data, len, (clss)->class_loader(), thread_type, wait); \ | |
158 } | |
14909 | 159 #endif /* USDT2 */ |
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160 |
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161 #else // ndef DTRACE_ENABLED |
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162 |
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163 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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164 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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165 |
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166 #endif // ndef DTRACE_ENABLED |
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167 |
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168 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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169 |
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170 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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171 ClassLoaderData* loader_data, |
8031 | 172 int vtable_len, |
173 int itable_len, | |
174 int static_field_size, | |
175 int nonstatic_oop_map_size, | |
176 ReferenceType rt, | |
177 AccessFlags access_flags, | |
178 Symbol* name, | |
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179 Klass* super_klass, |
8031 | 180 bool is_anonymous, |
181 TRAPS) { | |
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182 |
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183 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 184 access_flags.is_interface(), is_anonymous); |
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185 |
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186 // Allocation |
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187 InstanceKlass* ik; |
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188 if (rt == REF_NONE) { |
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189 if (name == vmSymbols::java_lang_Class()) { |
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190 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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191 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 192 access_flags, is_anonymous); |
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193 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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194 (SystemDictionary::ClassLoader_klass_loaded() && |
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195 super_klass != NULL && |
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196 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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197 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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198 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 199 access_flags, is_anonymous); |
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200 } else { |
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201 // normal class |
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202 ik = new (loader_data, size, THREAD) InstanceKlass( |
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203 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 204 access_flags, is_anonymous); |
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205 } |
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206 } else { |
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207 // reference klass |
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208 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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209 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 210 access_flags, is_anonymous); |
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211 } |
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212 |
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213 // Check for pending exception before adding to the loader data and incrementing |
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214 // class count. Can get OOM here. |
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215 if (HAS_PENDING_EXCEPTION) { |
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216 return NULL; |
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217 } |
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218 |
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219 // Add all classes to our internal class loader list here, |
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220 // including classes in the bootstrap (NULL) class loader. |
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221 loader_data->add_class(ik); |
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222 |
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223 Atomic::inc(&_total_instanceKlass_count); |
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224 return ik; |
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225 } |
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226 |
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227 |
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228 // copy method ordering from resource area to Metaspace |
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229 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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230 if (m != NULL) { |
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231 // allocate a new array and copy contents (memcpy?) |
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232 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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233 for (int i = 0; i < m->length(); i++) { |
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234 _method_ordering->at_put(i, m->at(i)); |
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235 } |
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236 } else { |
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237 _method_ordering = Universe::the_empty_int_array(); |
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238 } |
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239 } |
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240 |
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241 // create a new array of vtable_indices for default methods |
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242 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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243 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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244 assert(default_vtable_indices() == NULL, "only create once"); |
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245 set_default_vtable_indices(vtable_indices); |
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246 return vtable_indices; |
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247 } |
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248 |
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249 InstanceKlass::InstanceKlass(int vtable_len, |
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250 int itable_len, |
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251 int static_field_size, |
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252 int nonstatic_oop_map_size, |
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253 ReferenceType rt, |
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254 AccessFlags access_flags, |
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255 bool is_anonymous) { |
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256 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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257 |
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258 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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259 access_flags.is_interface(), is_anonymous); |
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260 |
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261 set_vtable_length(vtable_len); |
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262 set_itable_length(itable_len); |
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263 set_static_field_size(static_field_size); |
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264 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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265 set_access_flags(access_flags); |
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266 _misc_flags = 0; // initialize to zero |
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267 set_is_anonymous(is_anonymous); |
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268 assert(size() == iksize, "wrong size for object"); |
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269 |
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270 set_array_klasses(NULL); |
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271 set_methods(NULL); |
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272 set_method_ordering(NULL); |
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273 set_default_methods(NULL); |
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274 set_default_vtable_indices(NULL); |
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275 set_local_interfaces(NULL); |
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276 set_transitive_interfaces(NULL); |
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277 init_implementor(); |
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278 set_fields(NULL, 0); |
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279 set_constants(NULL); |
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280 set_class_loader_data(NULL); |
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281 set_source_file_name_index(0); |
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282 set_source_debug_extension(NULL, 0); |
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283 set_array_name(NULL); |
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284 set_inner_classes(NULL); |
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285 set_static_oop_field_count(0); |
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286 set_nonstatic_field_size(0); |
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287 set_is_marked_dependent(false); |
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288 set_init_state(InstanceKlass::allocated); |
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289 set_init_thread(NULL); |
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290 set_reference_type(rt); |
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291 #ifdef GRAAL |
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292 set_graal_node_class(NULL); |
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293 #endif |
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294 set_oop_map_cache(NULL); |
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295 set_jni_ids(NULL); |
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296 set_osr_nmethods_head(NULL); |
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297 set_breakpoints(NULL); |
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298 init_previous_versions(); |
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299 set_generic_signature_index(0); |
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300 release_set_methods_jmethod_ids(NULL); |
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301 set_annotations(NULL); |
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302 set_jvmti_cached_class_field_map(NULL); |
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303 set_initial_method_idnum(0); |
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304 _dependencies = NULL; |
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305 set_jvmti_cached_class_field_map(NULL); |
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306 set_cached_class_file(NULL); |
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307 set_initial_method_idnum(0); |
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308 set_minor_version(0); |
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309 set_major_version(0); |
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310 NOT_PRODUCT(_verify_count = 0;) |
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311 |
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312 // initialize the non-header words to zero |
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313 intptr_t* p = (intptr_t*)this; |
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314 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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315 p[index] = NULL_WORD; |
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316 } |
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317 |
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318 // Set temporary value until parseClassFile updates it with the real instance |
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319 // size. |
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320 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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321 } |
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322 |
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323 #ifdef GRAAL |
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324 void InstanceKlass::oops_do(OopClosure* cl) { |
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325 Klass::oops_do(cl); |
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326 cl->do_oop(adr_graal_node_class()); |
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327 } |
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328 #endif |
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329 |
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330 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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331 Array<Method*>* methods) { |
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332 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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333 !methods->is_shared()) { |
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334 for (int i = 0; i < methods->length(); i++) { |
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335 Method* method = methods->at(i); |
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336 if (method == NULL) continue; // maybe null if error processing |
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337 // Only want to delete methods that are not executing for RedefineClasses. |
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338 // The previous version will point to them so they're not totally dangling |
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339 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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340 MetadataFactory::free_metadata(loader_data, method); |
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341 } |
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342 MetadataFactory::free_array<Method*>(loader_data, methods); |
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343 } |
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344 } |
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345 |
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346 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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347 Klass* super_klass, |
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348 Array<Klass*>* local_interfaces, |
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349 Array<Klass*>* transitive_interfaces) { |
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350 // Only deallocate transitive interfaces if not empty, same as super class |
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351 // or same as local interfaces. See code in parseClassFile. |
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352 Array<Klass*>* ti = transitive_interfaces; |
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353 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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354 // check that the interfaces don't come from super class |
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355 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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356 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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357 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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358 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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359 } |
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360 } |
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361 |
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362 // local interfaces can be empty |
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363 if (local_interfaces != Universe::the_empty_klass_array() && |
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364 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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365 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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366 } |
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367 } |
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368 |
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369 // This function deallocates the metadata and C heap pointers that the |
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370 // InstanceKlass points to. |
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371 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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372 |
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373 // Orphan the mirror first, CMS thinks it's still live. |
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374 if (java_mirror() != NULL) { |
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375 java_lang_Class::set_klass(java_mirror(), NULL); |
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376 } |
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377 |
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378 // Need to take this class off the class loader data list. |
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379 loader_data->remove_class(this); |
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380 |
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381 // The array_klass for this class is created later, after error handling. |
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382 // For class redefinition, we keep the original class so this scratch class |
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383 // doesn't have an array class. Either way, assert that there is nothing |
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384 // to deallocate. |
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385 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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386 |
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387 // Release C heap allocated data that this might point to, which includes |
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388 // reference counting symbol names. |
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389 release_C_heap_structures(); |
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390 |
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391 deallocate_methods(loader_data, methods()); |
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392 set_methods(NULL); |
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393 |
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394 if (method_ordering() != NULL && |
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395 method_ordering() != Universe::the_empty_int_array() && |
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396 !method_ordering()->is_shared()) { |
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397 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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398 } |
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399 set_method_ordering(NULL); |
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400 |
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401 // default methods can be empty |
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402 if (default_methods() != NULL && |
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403 default_methods() != Universe::the_empty_method_array() && |
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404 !default_methods()->is_shared()) { |
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405 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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406 } |
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407 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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408 set_default_methods(NULL); |
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409 |
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410 // default methods vtable indices can be empty |
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411 if (default_vtable_indices() != NULL && |
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412 !default_vtable_indices()->is_shared()) { |
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413 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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414 } |
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415 set_default_vtable_indices(NULL); |
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416 |
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417 |
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418 // This array is in Klass, but remove it with the InstanceKlass since |
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419 // this place would be the only caller and it can share memory with transitive |
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420 // interfaces. |
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421 if (secondary_supers() != NULL && |
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422 secondary_supers() != Universe::the_empty_klass_array() && |
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423 secondary_supers() != transitive_interfaces() && |
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424 !secondary_supers()->is_shared()) { |
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425 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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426 } |
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427 set_secondary_supers(NULL); |
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428 |
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429 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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430 set_transitive_interfaces(NULL); |
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431 set_local_interfaces(NULL); |
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432 |
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433 if (fields() != NULL && !fields()->is_shared()) { |
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434 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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435 } |
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436 set_fields(NULL, 0); |
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437 |
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438 // If a method from a redefined class is using this constant pool, don't |
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439 // delete it, yet. The new class's previous version will point to this. |
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440 if (constants() != NULL) { |
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441 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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442 if (!constants()->is_shared()) { |
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443 MetadataFactory::free_metadata(loader_data, constants()); |
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444 } |
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445 set_constants(NULL); |
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446 } |
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447 |
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448 if (inner_classes() != NULL && |
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449 inner_classes() != Universe::the_empty_short_array() && |
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450 !inner_classes()->is_shared()) { |
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451 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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452 } |
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453 set_inner_classes(NULL); |
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454 |
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455 // We should deallocate the Annotations instance if it's not in shared spaces. |
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456 if (annotations() != NULL && !annotations()->is_shared()) { |
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457 MetadataFactory::free_metadata(loader_data, annotations()); |
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458 } |
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459 set_annotations(NULL); |
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460 } |
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461 |
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462 bool InstanceKlass::should_be_initialized() const { |
0 | 463 return !is_initialized(); |
464 } | |
465 | |
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466 klassVtable* InstanceKlass::vtable() const { |
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467 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 468 } |
469 | |
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470 klassItable* InstanceKlass::itable() const { |
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471 return new klassItable(instanceKlassHandle(this)); |
0 | 472 } |
473 | |
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474 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 475 if (!EagerInitialization) return; |
476 | |
477 if (this->is_not_initialized()) { | |
478 // abort if the the class has a class initializer | |
479 if (this->class_initializer() != NULL) return; | |
480 | |
481 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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482 Klass* super = this->super(); |
0 | 483 if (super == NULL) return; |
484 | |
485 // abort if the super class should be initialized | |
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486 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 487 |
488 // call body to expose the this pointer | |
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489 instanceKlassHandle this_oop(thread, this); |
0 | 490 eager_initialize_impl(this_oop); |
491 } | |
492 } | |
493 | |
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494 // JVMTI spec thinks there are signers and protection domain in the |
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495 // instanceKlass. These accessors pretend these fields are there. |
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496 // The hprof specification also thinks these fields are in InstanceKlass. |
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497 oop InstanceKlass::protection_domain() const { |
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498 // return the protection_domain from the mirror |
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499 return java_lang_Class::protection_domain(java_mirror()); |
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500 } |
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501 |
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502 // To remove these from requires an incompatible change and CCC request. |
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503 objArrayOop InstanceKlass::signers() const { |
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504 // return the signers from the mirror |
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505 return java_lang_Class::signers(java_mirror()); |
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506 } |
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507 |
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508 oop InstanceKlass::init_lock() const { |
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509 // return the init lock from the mirror |
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510 oop lock = java_lang_Class::init_lock(java_mirror()); |
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511 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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512 "only fully initialized state can have a null lock"); |
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513 return lock; |
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514 } |
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515 |
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516 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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517 // threads to get this lock will see a null lock and will not lock. |
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518 // That's okay because they all check for initialized state after getting |
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519 // the lock and return. |
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520 void InstanceKlass::fence_and_clear_init_lock() { |
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521 // make sure previous stores are all done, notably the init_state. |
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522 OrderAccess::storestore(); |
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523 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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524 assert(!is_not_initialized(), "class must be initialized now"); |
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525 } |
0 | 526 |
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527 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 528 EXCEPTION_MARK; |
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529 oop init_lock = this_oop->init_lock(); |
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530 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 531 |
532 // abort if someone beat us to the initialization | |
533 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
534 | |
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535 ClassState old_state = this_oop->init_state(); |
0 | 536 link_class_impl(this_oop, true, THREAD); |
537 if (HAS_PENDING_EXCEPTION) { | |
538 CLEAR_PENDING_EXCEPTION; | |
539 // Abort if linking the class throws an exception. | |
540 | |
541 // Use a test to avoid redundantly resetting the state if there's | |
542 // no change. Set_init_state() asserts that state changes make | |
543 // progress, whereas here we might just be spinning in place. | |
544 if( old_state != this_oop->_init_state ) | |
545 this_oop->set_init_state (old_state); | |
546 } else { | |
547 // linking successfull, mark class as initialized | |
548 this_oop->set_init_state (fully_initialized); | |
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549 this_oop->fence_and_clear_init_lock(); |
0 | 550 // trace |
551 if (TraceClassInitialization) { | |
552 ResourceMark rm(THREAD); | |
553 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
554 } | |
555 } | |
556 } | |
557 | |
558 | |
559 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
560 // process. The step comments refers to the procedure described in that section. | |
561 // Note: implementation moved to static method to expose the this pointer. | |
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562 void InstanceKlass::initialize(TRAPS) { |
0 | 563 if (this->should_be_initialized()) { |
564 HandleMark hm(THREAD); | |
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565 instanceKlassHandle this_oop(THREAD, this); |
0 | 566 initialize_impl(this_oop, CHECK); |
567 // Note: at this point the class may be initialized | |
568 // OR it may be in the state of being initialized | |
569 // in case of recursive initialization! | |
570 } else { | |
571 assert(is_initialized(), "sanity check"); | |
572 } | |
573 } | |
574 | |
575 | |
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576 bool InstanceKlass::verify_code( |
0 | 577 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
578 // 1) Verify the bytecodes | |
579 Verifier::Mode mode = | |
580 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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581 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 582 } |
583 | |
584 | |
585 // Used exclusively by the shared spaces dump mechanism to prevent | |
586 // classes mapped into the shared regions in new VMs from appearing linked. | |
587 | |
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588 void InstanceKlass::unlink_class() { |
0 | 589 assert(is_linked(), "must be linked"); |
590 _init_state = loaded; | |
591 } | |
592 | |
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593 void InstanceKlass::link_class(TRAPS) { |
0 | 594 assert(is_loaded(), "must be loaded"); |
595 if (!is_linked()) { | |
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596 HandleMark hm(THREAD); |
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597 instanceKlassHandle this_oop(THREAD, this); |
0 | 598 link_class_impl(this_oop, true, CHECK); |
599 } | |
600 } | |
601 | |
602 // Called to verify that a class can link during initialization, without | |
603 // throwing a VerifyError. | |
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604 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 605 assert(is_loaded(), "must be loaded"); |
606 if (!is_linked()) { | |
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607 HandleMark hm(THREAD); |
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608 instanceKlassHandle this_oop(THREAD, this); |
0 | 609 link_class_impl(this_oop, false, CHECK_false); |
610 } | |
611 return is_linked(); | |
612 } | |
613 | |
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614 bool InstanceKlass::link_class_impl( |
0 | 615 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
616 // check for error state | |
617 if (this_oop->is_in_error_state()) { | |
618 ResourceMark rm(THREAD); | |
619 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
620 this_oop->external_name(), false); | |
621 } | |
622 // return if already verified | |
623 if (this_oop->is_linked()) { | |
624 return true; | |
625 } | |
626 | |
627 // Timing | |
628 // timer handles recursion | |
629 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
630 JavaThread* jt = (JavaThread*)THREAD; | |
631 | |
632 // link super class before linking this class | |
633 instanceKlassHandle super(THREAD, this_oop->super()); | |
634 if (super.not_null()) { | |
635 if (super->is_interface()) { // check if super class is an interface | |
636 ResourceMark rm(THREAD); | |
637 Exceptions::fthrow( | |
638 THREAD_AND_LOCATION, | |
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639 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 640 "class %s has interface %s as super class", |
641 this_oop->external_name(), | |
642 super->external_name() | |
643 ); | |
644 return false; | |
645 } | |
646 | |
647 link_class_impl(super, throw_verifyerror, CHECK_false); | |
648 } | |
649 | |
650 // link all interfaces implemented by this class before linking this class | |
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651 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 652 int num_interfaces = interfaces->length(); |
653 for (int index = 0; index < num_interfaces; index++) { | |
654 HandleMark hm(THREAD); | |
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655 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 656 link_class_impl(ih, throw_verifyerror, CHECK_false); |
657 } | |
658 | |
659 // in case the class is linked in the process of linking its superclasses | |
660 if (this_oop->is_linked()) { | |
661 return true; | |
662 } | |
663 | |
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664 // trace only the link time for this klass that includes |
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665 // the verification time |
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666 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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667 ClassLoader::perf_class_link_selftime(), |
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668 ClassLoader::perf_classes_linked(), |
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669 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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670 jt->get_thread_stat()->perf_timers_addr(), |
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671 PerfClassTraceTime::CLASS_LINK); |
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672 |
0 | 673 // verification & rewriting |
674 { | |
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675 oop init_lock = this_oop->init_lock(); |
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676 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 677 // rewritten will have been set if loader constraint error found |
678 // on an earlier link attempt | |
679 // don't verify or rewrite if already rewritten | |
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680 |
0 | 681 if (!this_oop->is_linked()) { |
682 if (!this_oop->is_rewritten()) { | |
683 { | |
684 // Timer includes any side effects of class verification (resolution, | |
685 // etc), but not recursive entry into verify_code(). | |
875
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686 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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687 ClassLoader::perf_class_verify_selftime(), |
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688 ClassLoader::perf_classes_verified(), |
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689 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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690 jt->get_thread_stat()->perf_timers_addr(), |
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691 PerfClassTraceTime::CLASS_VERIFY); |
0 | 692 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
693 if (!verify_ok) { | |
694 return false; | |
695 } | |
696 } | |
697 | |
698 // Just in case a side-effect of verify linked this class already | |
699 // (which can sometimes happen since the verifier loads classes | |
700 // using custom class loaders, which are free to initialize things) | |
701 if (this_oop->is_linked()) { | |
702 return true; | |
703 } | |
704 | |
705 // also sets rewritten | |
706 this_oop->rewrite_class(CHECK_false); | |
707 } | |
708 | |
3404 | 709 // relocate jsrs and link methods after they are all rewritten |
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710 this_oop->link_methods(CHECK_false); |
3404 | 711 |
0 | 712 // Initialize the vtable and interface table after |
713 // methods have been rewritten since rewrite may | |
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714 // fabricate new Method*s. |
0 | 715 // also does loader constraint checking |
716 if (!this_oop()->is_shared()) { | |
717 ResourceMark rm(THREAD); | |
718 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
719 this_oop->itable()->initialize_itable(true, CHECK_false); | |
720 } | |
721 #ifdef ASSERT | |
722 else { | |
723 ResourceMark rm(THREAD); | |
724 this_oop->vtable()->verify(tty, true); | |
725 // In case itable verification is ever added. | |
726 // this_oop->itable()->verify(tty, true); | |
727 } | |
728 #endif | |
729 this_oop->set_init_state(linked); | |
730 if (JvmtiExport::should_post_class_prepare()) { | |
731 Thread *thread = THREAD; | |
732 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
733 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
734 } | |
735 } | |
736 } | |
737 return true; | |
738 } | |
739 | |
740 | |
741 // Rewrite the byte codes of all of the methods of a class. | |
742 // The rewriter must be called exactly once. Rewriting must happen after | |
743 // verification but before the first method of the class is executed. | |
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744 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 745 assert(is_loaded(), "must be loaded"); |
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746 instanceKlassHandle this_oop(THREAD, this); |
0 | 747 if (this_oop->is_rewritten()) { |
748 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
749 return; | |
750 } | |
3404 | 751 Rewriter::rewrite(this_oop, CHECK); |
0 | 752 this_oop->set_rewritten(); |
753 } | |
754 | |
3404 | 755 // Now relocate and link method entry points after class is rewritten. |
756 // This is outside is_rewritten flag. In case of an exception, it can be | |
757 // executed more than once. | |
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758 void InstanceKlass::link_methods(TRAPS) { |
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759 int len = methods()->length(); |
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760 for (int i = len-1; i >= 0; i--) { |
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761 methodHandle m(THREAD, methods()->at(i)); |
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762 |
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763 // Set up method entry points for compiler and interpreter . |
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764 m->link_method(m, CHECK); |
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765 |
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766 // This is for JVMTI and unrelated to relocator but the last thing we do |
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767 #ifdef ASSERT |
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768 if (StressMethodComparator) { |
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769 ResourceMark rm(THREAD); |
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770 static int nmc = 0; |
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771 for (int j = i; j >= 0 && j >= i-4; j--) { |
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772 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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773 bool z = MethodComparator::methods_EMCP(m(), |
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774 methods()->at(j)); |
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775 if (j == i && !z) { |
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776 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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777 assert(z, "method must compare equal to itself"); |
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778 } |
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779 } |
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780 } |
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781 #endif //ASSERT |
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782 } |
3404 | 783 } |
784 | |
0 | 785 |
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786 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 787 // Make sure klass is linked (verified) before initialization |
788 // A class could already be verified, since it has been reflected upon. | |
789 this_oop->link_class(CHECK); | |
790 | |
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791 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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792 |
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793 bool wait = false; |
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794 |
0 | 795 // refer to the JVM book page 47 for description of steps |
796 // Step 1 | |
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797 { |
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798 oop init_lock = this_oop->init_lock(); |
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799 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 800 |
801 Thread *self = THREAD; // it's passed the current thread | |
802 | |
803 // Step 2 | |
804 // If we were to use wait() instead of waitInterruptibly() then | |
805 // we might end up throwing IE from link/symbol resolution sites | |
806 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
807 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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808 wait = true; |
0 | 809 ol.waitUninterruptibly(CHECK); |
810 } | |
811 | |
812 // Step 3 | |
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813 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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814 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 815 return; |
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816 } |
0 | 817 |
818 // Step 4 | |
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819 if (this_oop->is_initialized()) { |
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820 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 821 return; |
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822 } |
0 | 823 |
824 // Step 5 | |
825 if (this_oop->is_in_error_state()) { | |
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826 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 827 ResourceMark rm(THREAD); |
828 const char* desc = "Could not initialize class "; | |
829 const char* className = this_oop->external_name(); | |
830 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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831 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 832 if (NULL == message) { |
833 // Out of memory: can't create detailed error message | |
834 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
835 } else { | |
836 jio_snprintf(message, msglen, "%s%s", desc, className); | |
837 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
838 } | |
839 } | |
840 | |
841 // Step 6 | |
842 this_oop->set_init_state(being_initialized); | |
843 this_oop->set_init_thread(self); | |
844 } | |
845 | |
846 // Step 7 | |
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847 Klass* super_klass = this_oop->super(); |
6983 | 848 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
849 super_klass->initialize(THREAD); | |
0 | 850 |
851 if (HAS_PENDING_EXCEPTION) { | |
852 Handle e(THREAD, PENDING_EXCEPTION); | |
853 CLEAR_PENDING_EXCEPTION; | |
854 { | |
855 EXCEPTION_MARK; | |
856 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
857 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
858 } | |
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859 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 860 THROW_OOP(e()); |
861 } | |
862 } | |
863 | |
6934 | 864 if (this_oop->has_default_methods()) { |
865 // Step 7.5: initialize any interfaces which have default methods | |
866 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { | |
867 Klass* iface = this_oop->local_interfaces()->at(i); | |
868 InstanceKlass* ik = InstanceKlass::cast(iface); | |
869 if (ik->has_default_methods() && ik->should_be_initialized()) { | |
870 ik->initialize(THREAD); | |
871 | |
872 if (HAS_PENDING_EXCEPTION) { | |
873 Handle e(THREAD, PENDING_EXCEPTION); | |
874 CLEAR_PENDING_EXCEPTION; | |
875 { | |
876 EXCEPTION_MARK; | |
877 // Locks object, set state, and notify all waiting threads | |
878 this_oop->set_initialization_state_and_notify( | |
879 initialization_error, THREAD); | |
880 | |
881 // ignore any exception thrown, superclass initialization error is | |
882 // thrown below | |
883 CLEAR_PENDING_EXCEPTION; | |
884 } | |
885 DTRACE_CLASSINIT_PROBE_WAIT( | |
886 super__failed, InstanceKlass::cast(this_oop()), -1, wait); | |
887 THROW_OOP(e()); | |
888 } | |
889 } | |
890 } | |
891 } | |
892 | |
0 | 893 // Step 8 |
894 { | |
895 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
896 JavaThread* jt = (JavaThread*)THREAD; | |
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897 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 898 // Timer includes any side effects of class initialization (resolution, |
899 // etc), but not recursive entry into call_class_initializer(). | |
875
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900 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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901 ClassLoader::perf_class_init_selftime(), |
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902 ClassLoader::perf_classes_inited(), |
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903 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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904 jt->get_thread_stat()->perf_timers_addr(), |
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905 PerfClassTraceTime::CLASS_CLINIT); |
0 | 906 this_oop->call_class_initializer(THREAD); |
907 } | |
908 | |
909 // Step 9 | |
910 if (!HAS_PENDING_EXCEPTION) { | |
911 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
912 { ResourceMark rm(THREAD); | |
913 debug_only(this_oop->vtable()->verify(tty, true);) | |
914 } | |
915 } | |
916 else { | |
917 // Step 10 and 11 | |
918 Handle e(THREAD, PENDING_EXCEPTION); | |
919 CLEAR_PENDING_EXCEPTION; | |
920 { | |
921 EXCEPTION_MARK; | |
922 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
923 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
924 } | |
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925 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 926 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 927 THROW_OOP(e()); |
928 } else { | |
929 JavaCallArguments args(e); | |
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930 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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931 vmSymbols::throwable_void_signature(), |
0 | 932 &args); |
933 } | |
934 } | |
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935 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 936 } |
937 | |
938 | |
939 // Note: implementation moved to static method to expose the this pointer. | |
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940 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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941 instanceKlassHandle kh(THREAD, this); |
0 | 942 set_initialization_state_and_notify_impl(kh, state, CHECK); |
943 } | |
944 | |
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945 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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946 oop init_lock = this_oop->init_lock(); |
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947 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 948 this_oop->set_init_state(state); |
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949 this_oop->fence_and_clear_init_lock(); |
0 | 950 ol.notify_all(CHECK); |
951 } | |
952 | |
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953 // The embedded _implementor field can only record one implementor. |
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954 // When there are more than one implementors, the _implementor field |
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955 // is set to the interface Klass* itself. Following are the possible |
5998
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956 // values for the _implementor field: |
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957 // NULL - no implementor |
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958 // implementor Klass* - one implementor |
5998
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959 // self - more than one implementor |
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960 // |
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961 // The _implementor field only exists for interfaces. |
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962 void InstanceKlass::add_implementor(Klass* k) { |
0 | 963 assert(Compile_lock->owned_by_self(), ""); |
5998
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964 assert(is_interface(), "not interface"); |
0 | 965 // Filter out my subinterfaces. |
966 // (Note: Interfaces are never on the subklass list.) | |
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967 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 968 |
969 // Filter out subclasses whose supers already implement me. | |
970 // (Note: CHA must walk subclasses of direct implementors | |
971 // in order to locate indirect implementors.) | |
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972 Klass* sk = InstanceKlass::cast(k)->super(); |
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973 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 974 // We only need to check one immediate superclass, since the |
975 // implements_interface query looks at transitive_interfaces. | |
976 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
977 return; | |
978 | |
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979 Klass* ik = implementor(); |
5998
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980 if (ik == NULL) { |
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981 set_implementor(k); |
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982 } else if (ik != this) { |
5998
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983 // There is already an implementor. Use itself as an indicator of |
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984 // more than one implementors. |
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985 set_implementor(this); |
0 | 986 } |
987 | |
988 // The implementor also implements the transitive_interfaces | |
989 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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990 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 991 } |
992 } | |
993 | |
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994 void InstanceKlass::init_implementor() { |
5998
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995 if (is_interface()) { |
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996 set_implementor(NULL); |
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997 } |
0 | 998 } |
999 | |
1000 | |
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1001 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1002 // link this class into the implementors list of every interface it implements |
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1003 Klass* this_as_klass_oop = this; |
0 | 1004 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1005 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1006 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1007 assert(interf->is_interface(), "expected interface"); |
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1008 interf->add_implementor(this_as_klass_oop); |
0 | 1009 } |
1010 } | |
1011 | |
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1012 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1013 if (is_interface()) |
1014 return false; | |
1015 else | |
1016 return Klass::can_be_primary_super_slow(); | |
1017 } | |
1018 | |
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1019 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1020 // The secondaries are the implemented interfaces. |
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1021 InstanceKlass* ik = InstanceKlass::cast(this); |
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1022 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1023 int num_secondaries = num_extra_slots + interfaces->length(); |
1024 if (num_secondaries == 0) { | |
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1025 // Must share this for correct bootstrapping! |
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1026 set_secondary_supers(Universe::the_empty_klass_array()); |
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1027 return NULL; |
0 | 1028 } else if (num_extra_slots == 0) { |
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1029 // The secondary super list is exactly the same as the transitive interfaces. |
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1030 // Redefine classes has to be careful not to delete this! |
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1031 set_secondary_supers(interfaces); |
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1032 return NULL; |
0 | 1033 } else { |
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1034 // Copy transitive interfaces to a temporary growable array to be constructed |
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1035 // into the secondary super list with extra slots. |
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1036 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1037 for (int i = 0; i < interfaces->length(); i++) { |
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1038 secondaries->push(interfaces->at(i)); |
0 | 1039 } |
1040 return secondaries; | |
1041 } | |
1042 } | |
1043 | |
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1044 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1045 if (k->is_interface()) { |
0 | 1046 return implements_interface(k); |
1047 } else { | |
1048 return Klass::compute_is_subtype_of(k); | |
1049 } | |
1050 } | |
1051 | |
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1052 bool InstanceKlass::implements_interface(Klass* k) const { |
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1053 if (this == k) return true; |
6983 | 1054 assert(k->is_interface(), "should be an interface class"); |
0 | 1055 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1056 if (transitive_interfaces()->at(i) == k) { |
0 | 1057 return true; |
1058 } | |
1059 } | |
1060 return false; | |
1061 } | |
1062 | |
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1063 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1064 // Verify direct super interface |
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1065 if (this == k) return true; |
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1066 assert(k->is_interface(), "should be an interface class"); |
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1067 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1068 if (local_interfaces()->at(i) == k) { |
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1069 return true; |
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1070 } |
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1071 } |
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1072 return false; |
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1073 } |
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1074 |
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1075 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1076 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1077 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1078 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1079 JvmtiExport::post_array_size_exhausted(); |
0 | 1080 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1081 } | |
1082 int size = objArrayOopDesc::object_size(length); | |
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1083 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1084 KlassHandle h_ak (THREAD, ak); |
1085 objArrayOop o = | |
1086 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1087 return o; | |
1088 } | |
1089 | |
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1090 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1091 if (TraceFinalizerRegistration) { |
1092 tty->print("Registered "); | |
1093 i->print_value_on(tty); | |
1094 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1095 } | |
1096 instanceHandle h_i(THREAD, i); | |
1097 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1098 JavaValue result(T_VOID); | |
1099 JavaCallArguments args(h_i); | |
1100 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1101 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1102 return h_i(); | |
1103 } | |
1104 | |
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1105 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1106 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1107 int size = size_helper(); // Query before forming handle. | |
1108 | |
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1109 KlassHandle h_k(THREAD, this); |
0 | 1110 |
1111 instanceOop i; | |
1112 | |
1113 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1114 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1115 i = register_finalizer(i, CHECK_NULL); | |
1116 } | |
1117 return i; | |
1118 } | |
1119 | |
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1120 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1121 if (is_interface() || is_abstract()) { |
1122 ResourceMark rm(THREAD); | |
1123 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1124 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1125 } | |
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1126 if (this == SystemDictionary::Class_klass()) { |
0 | 1127 ResourceMark rm(THREAD); |
1128 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1129 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1130 } | |
1131 } | |
1132 | |
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1133 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1134 instanceKlassHandle this_oop(THREAD, this); |
0 | 1135 return array_klass_impl(this_oop, or_null, n, THREAD); |
1136 } | |
1137 | |
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1138 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1139 if (this_oop->array_klasses() == NULL) { |
1140 if (or_null) return NULL; | |
1141 | |
1142 ResourceMark rm; | |
1143 JavaThread *jt = (JavaThread *)THREAD; | |
1144 { | |
1145 // Atomic creation of array_klasses | |
1146 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1147 MutexLocker ma(MultiArray_lock, THREAD); | |
1148 | |
1149 // Check if update has already taken place | |
1150 if (this_oop->array_klasses() == NULL) { | |
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1151 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1152 this_oop->set_array_klasses(k); |
1153 } | |
1154 } | |
1155 } | |
1156 // _this will always be set at this point | |
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1157 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1158 if (or_null) { |
1159 return oak->array_klass_or_null(n); | |
1160 } | |
1161 return oak->array_klass(n, CHECK_NULL); | |
1162 } | |
1163 | |
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1164 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1165 return array_klass_impl(or_null, 1, THREAD); |
1166 } | |
1167 | |
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1168 void InstanceKlass::call_class_initializer(TRAPS) { |
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1169 instanceKlassHandle ik (THREAD, this); |
0 | 1170 call_class_initializer_impl(ik, THREAD); |
1171 } | |
1172 | |
1173 static int call_class_initializer_impl_counter = 0; // for debugging | |
1174 | |
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1175 Method* InstanceKlass::class_initializer() { |
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1176 Method* clinit = find_method( |
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1177 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1178 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1179 return clinit; |
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1180 } |
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1181 return NULL; |
0 | 1182 } |
1183 | |
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1184 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1185 if (ReplayCompiles && |
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1186 (ReplaySuppressInitializers == 1 || |
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1187 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1188 // Hide the existence of the initializer for the purpose of replaying the compile |
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1189 return; |
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1190 } |
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1191 |
0 | 1192 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1193 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1194 if (TraceClassInitialization) { | |
1195 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1196 this_oop->name()->print_value(); | |
1197 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1198 } | |
1199 if (h_method() != NULL) { | |
1200 JavaCallArguments args; // No arguments | |
1201 JavaValue result(T_VOID); | |
1202 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1203 } | |
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1204 |
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1205 #ifdef GRAAL |
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1206 if (this_oop->is_subtype_of(SystemDictionary::Node_klass())) { |
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1207 if (this_oop() != SystemDictionary::Node_klass()) { |
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1208 // Create the NodeClass for a Node subclass. |
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1209 TempNewSymbol sig = SymbolTable::new_symbol("(Ljava/lang/Class;)Lcom/oracle/graal/graph/NodeClass;", CHECK); |
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1210 JavaValue result(T_OBJECT); |
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1211 JavaCalls::call_static(&result, SystemDictionary::NodeClass_klass(), vmSymbols::get_name(), sig, this_oop->java_mirror(), CHECK); |
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1212 this_oop->set_graal_node_class((oop) result.get_jobject()); |
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1213 } else { |
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1214 // A NodeClass cannot be created for Node due to checks in |
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1215 // NodeClass.FieldScanner.scanField() |
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1216 } |
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1217 } |
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1218 #endif |
0 | 1219 } |
1220 | |
1221 | |
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1222 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1223 InterpreterOopMap* entry_for) { |
1224 // Dirty read, then double-check under a lock. | |
1225 if (_oop_map_cache == NULL) { | |
1226 // Otherwise, allocate a new one. | |
1227 MutexLocker x(OopMapCacheAlloc_lock); | |
1228 // First time use. Allocate a cache in C heap | |
1229 if (_oop_map_cache == NULL) { | |
14909 | 1230 _oop_map_cache = new OopMapCache(); |
0 | 1231 } |
1232 } | |
1233 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1234 _oop_map_cache->lookup(method, bci, entry_for); | |
1235 } | |
1236 | |
1237 | |
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1238 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1239 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1240 Symbol* f_name = fs.name(); |
1241 Symbol* f_sig = fs.signature(); | |
0 | 1242 if (f_name == name && f_sig == sig) { |
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1243 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1244 return true; |
1245 } | |
1246 } | |
1247 return false; | |
1248 } | |
1249 | |
1250 | |
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1251 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1252 const int n = local_interfaces()->length(); |
1253 for (int i = 0; i < n; i++) { | |
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1254 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1255 assert(intf1->is_interface(), "just checking type"); |
0 | 1256 // search for field in current interface |
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1257 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1258 assert(fd->is_static(), "interface field must be static"); |
1259 return intf1; | |
1260 } | |
1261 // search for field in direct superinterfaces | |
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1262 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1263 if (intf2 != NULL) return intf2; |
1264 } | |
1265 // otherwise field lookup fails | |
1266 return NULL; | |
1267 } | |
1268 | |
1269 | |
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1270 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1271 // search order according to newest JVM spec (5.4.3.2, p.167). |
1272 // 1) search for field in current klass | |
1273 if (find_local_field(name, sig, fd)) { | |
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1274 return const_cast<InstanceKlass*>(this); |
0 | 1275 } |
1276 // 2) search for field recursively in direct superinterfaces | |
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1277 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1278 if (intf != NULL) return intf; |
1279 } | |
1280 // 3) apply field lookup recursively if superclass exists | |
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1281 { Klass* supr = super(); |
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1282 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1283 } |
1284 // 4) otherwise field lookup fails | |
1285 return NULL; | |
1286 } | |
1287 | |
1288 | |
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1289 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1290 // search order according to newest JVM spec (5.4.3.2, p.167). |
1291 // 1) search for field in current klass | |
1292 if (find_local_field(name, sig, fd)) { | |
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1293 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1294 } |
1295 // 2) search for field recursively in direct superinterfaces | |
1296 if (is_static) { | |
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1297 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1298 if (intf != NULL) return intf; |
1299 } | |
1300 // 3) apply field lookup recursively if superclass exists | |
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1301 { Klass* supr = super(); |
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1302 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1303 } |
1304 // 4) otherwise field lookup fails | |
1305 return NULL; | |
1306 } | |
1307 | |
1308 | |
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1309 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1310 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1311 if (fs.offset() == offset) { |
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1312 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1313 if (fd->is_static() == is_static) return true; |
1314 } | |
1315 } | |
1316 return false; | |
1317 } | |
1318 | |
1319 | |
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1320 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1321 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1322 while (klass != NULL) { |
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1323 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1324 return true; |
1325 } | |
6983 | 1326 klass = klass->super(); |
0 | 1327 } |
1328 return false; | |
1329 } | |
1330 | |
1331 | |
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1332 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1333 int len = methods()->length(); |
1334 for (int index = 0; index < len; index++) { | |
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1335 Method* m = methods()->at(index); |
0 | 1336 assert(m->is_method(), "must be method"); |
1337 f(m); | |
1338 } | |
1339 } | |
1340 | |
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1341 |
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1342 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1343 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1344 if (fs.access_flags().is_static()) { | |
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1345 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1346 cl->do_field(&fd); |
1347 } | |
0 | 1348 } |
1349 } | |
1350 | |
1351 | |
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1352 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS) { |
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1353 instanceKlassHandle h_this(THREAD, this); |
0 | 1354 do_local_static_fields_impl(h_this, f, CHECK); |
1355 } | |
1356 | |
1357 | |
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1358 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS) { |
3938 | 1359 for (JavaFieldStream fs(this_oop()); !fs.done(); fs.next()) { |
1360 if (fs.access_flags().is_static()) { | |
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1361 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1362 f(&fd, CHECK); |
1363 } | |
0 | 1364 } |
1365 } | |
1366 | |
1367 | |
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1368 static int compare_fields_by_offset(int* a, int* b) { |
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1369 return a[0] - b[0]; |
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1370 } |
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1371 |
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1372 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1373 InstanceKlass* super = superklass(); |
0 | 1374 if (super != NULL) { |
1375 super->do_nonstatic_fields(cl); | |
1376 } | |
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1377 fieldDescriptor fd; |
3938 | 1378 int length = java_fields_count(); |
44
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1379 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1380 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1381 int j = 0; |
3938 | 1382 for (int i = 0; i < length; i += 1) { |
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1383 fd.reinitialize(this, i); |
44
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1384 if (!fd.is_static()) { |
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1385 fields_sorted[j + 0] = fd.offset(); |
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1386 fields_sorted[j + 1] = i; |
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1387 j += 2; |
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1388 } |
0 | 1389 } |
44
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1390 if (j > 0) { |
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1391 length = j; |
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1392 // _sort_Fn is defined in growableArray.hpp. |
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1393 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1394 for (int i = 0; i < length; i += 2) { |
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1395 fd.reinitialize(this, fields_sorted[i + 1]); |
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1396 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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1397 cl->do_field(&fd); |
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1398 } |
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1399 } |
6197 | 1400 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1401 } |
1402 | |
1403 | |
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1404 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1405 if (array_klasses() != NULL) |
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1406 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1407 } |
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1408 |
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1409 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1410 if (array_klasses() != NULL) |
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1411 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1412 } |
1413 | |
1414 #ifdef ASSERT | |
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1415 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1416 int len = methods->length(); |
1417 for (int index = 0; index < len; index++) { | |
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1418 Method* m = methods->at(index); |
0 | 1419 assert(m->is_method(), "must be method"); |
1420 if (m->signature() == signature && m->name() == name) { | |
1421 return index; | |
1422 } | |
1423 } | |
1424 return -1; | |
1425 } | |
1426 #endif | |
1427 | |
6934 | 1428 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1429 int len = methods->length(); |
1430 // methods are sorted, so do binary search | |
1431 int l = 0; | |
1432 int h = len - 1; | |
1433 while (l <= h) { | |
1434 int mid = (l + h) >> 1; | |
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1435 Method* m = methods->at(mid); |
0 | 1436 assert(m->is_method(), "must be method"); |
1437 int res = m->name()->fast_compare(name); | |
1438 if (res == 0) { | |
6934 | 1439 return mid; |
0 | 1440 } else if (res < 0) { |
1441 l = mid + 1; | |
1442 } else { | |
1443 h = mid - 1; | |
1444 } | |
1445 } | |
6934 | 1446 return -1; |
1447 } | |
1448 | |
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1449 // find_method looks up the name/signature in the local methods array |
6934 | 1450 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
1451 return InstanceKlass::find_method(methods(), name, signature); | |
1452 } | |
1453 | |
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1454 // find_instance_method looks up the name/signature in the local methods array |
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1455 // and skips over static methods |
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1456 Method* InstanceKlass::find_instance_method( |
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1457 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
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1458 Method* meth = InstanceKlass::find_method(methods, name, signature); |
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1459 if (meth != NULL && meth->is_static()) { |
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1460 meth = NULL; |
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1461 } |
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1462 return meth; |
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1463 } |
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1464 |
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1465 // find_method looks up the name/signature in the local methods array |
6934 | 1466 Method* InstanceKlass::find_method( |
1467 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
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1468 int hit = find_method_index(methods, name, signature); |
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1469 return hit >= 0 ? methods->at(hit): NULL; |
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1470 } |
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1471 |
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1472 // Used directly for default_methods to find the index into the |
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1473 // default_vtable_indices, and indirectly by find_method |
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1474 // find_method_index looks in the local methods array to return the index |
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1475 // of the matching name/signature |
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1476 int InstanceKlass::find_method_index( |
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1477 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
6934 | 1478 int hit = binary_search(methods, name); |
1479 if (hit != -1) { | |
1480 Method* m = methods->at(hit); | |
1481 // Do linear search to find matching signature. First, quick check | |
1482 // for common case | |
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1483 if (m->signature() == signature) return hit; |
6934 | 1484 // search downwards through overloaded methods |
1485 int i; | |
1486 for (i = hit - 1; i >= 0; --i) { | |
1487 Method* m = methods->at(i); | |
1488 assert(m->is_method(), "must be method"); | |
1489 if (m->name() != name) break; | |
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1490 if (m->signature() == signature) return i; |
6934 | 1491 } |
1492 // search upwards | |
1493 for (i = hit + 1; i < methods->length(); ++i) { | |
1494 Method* m = methods->at(i); | |
1495 assert(m->is_method(), "must be method"); | |
1496 if (m->name() != name) break; | |
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1497 if (m->signature() == signature) return i; |
6934 | 1498 } |
1499 // not found | |
0 | 1500 #ifdef ASSERT |
6934 | 1501 int index = linear_search(methods, name, signature); |
1502 assert(index == -1, err_msg("binary search should have found entry %d", index)); | |
0 | 1503 #endif |
6934 | 1504 } |
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1505 return -1; |
0 | 1506 } |
6934 | 1507 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1508 return find_method_by_name(methods(), name, end); | |
1509 } | |
1510 | |
1511 int InstanceKlass::find_method_by_name( | |
1512 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1513 assert(end_ptr != NULL, "just checking"); | |
1514 int start = binary_search(methods, name); | |
1515 int end = start + 1; | |
1516 if (start != -1) { | |
1517 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1518 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1519 *end_ptr = end; | |
1520 return start; | |
1521 } | |
1522 return -1; | |
1523 } | |
1524 | |
14909 | 1525 // lookup_method searches both the local methods array and all superclasses methods arrays |
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1526 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const { |
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1527 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1528 while (klass != NULL) { |
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1529 Method* method = InstanceKlass::cast(klass)->find_method(name, signature); |
14909 | 1530 if (method != NULL) return method; |
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1531 klass = InstanceKlass::cast(klass)->super(); |
0 | 1532 } |
1533 return NULL; | |
1534 } | |
1535 | |
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1536 // lookup a method in the default methods list then in all transitive interfaces |
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1537 // Do NOT return private or static methods |
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1538 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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1539 Symbol* signature) const { |
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1540 Method* m = NULL; |
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1541 if (default_methods() != NULL) { |
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1542 m = find_method(default_methods(), name, signature); |
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1543 } |
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1544 // Look up interfaces |
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1545 if (m == NULL) { |
14909 | 1546 m = lookup_method_in_all_interfaces(name, signature); |
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1547 } |
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1548 return m; |
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1549 } |
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1550 |
0 | 1551 // lookup a method in all the interfaces that this class implements |
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1552 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
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1553 // They should only be found in the initial InterfaceMethodRef |
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1554 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
14909 | 1555 Symbol* signature) const { |
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1556 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1557 int num_ifs = all_ifs->length(); |
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1558 InstanceKlass *ik = NULL; |
0 | 1559 for (int i = 0; i < num_ifs; i++) { |
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1560 ik = InstanceKlass::cast(all_ifs->at(i)); |
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1561 Method* m = ik->lookup_method(name, signature); |
14909 | 1562 if (m != NULL && m->is_public() && !m->is_static()) { |
0 | 1563 return m; |
1564 } | |
1565 } | |
1566 return NULL; | |
1567 } | |
1568 | |
1569 /* jni_id_for_impl for jfieldIds only */ | |
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1570 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1571 MutexLocker ml(JfieldIdCreation_lock); |
1572 // Retry lookup after we got the lock | |
1573 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1574 if (probe == NULL) { | |
1575 // Slow case, allocate new static field identifier | |
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1576 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1577 this_oop->set_jni_ids(probe); |
1578 } | |
1579 return probe; | |
1580 } | |
1581 | |
1582 | |
1583 /* jni_id_for for jfieldIds only */ | |
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1584 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1585 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1586 if (probe == NULL) { | |
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1587 probe = jni_id_for_impl(this, offset); |
0 | 1588 } |
1589 return probe; | |
1590 } | |
1591 | |
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1592 u2 InstanceKlass::enclosing_method_data(int offset) { |
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1593 Array<jushort>* inner_class_list = inner_classes(); |
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1594 if (inner_class_list == NULL) { |
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1595 return 0; |
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1596 } |
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1597 int length = inner_class_list->length(); |
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1598 if (length % inner_class_next_offset == 0) { |
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1599 return 0; |
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|
1600 } else { |
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1601 int index = length - enclosing_method_attribute_size; |
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1602 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
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1603 return inner_class_list->at(index + offset); |
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1604 } |
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1605 } |
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1606 |
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1607 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
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1608 u2 method_index) { |
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1609 Array<jushort>* inner_class_list = inner_classes(); |
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1610 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
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1611 int length = inner_class_list->length(); |
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1612 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
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1613 int index = length - enclosing_method_attribute_size; |
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1614 inner_class_list->at_put( |
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1615 index + enclosing_method_class_index_offset, class_index); |
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1616 inner_class_list->at_put( |
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1617 index + enclosing_method_method_index_offset, method_index); |
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1618 } |
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1619 } |
0 | 1620 |
1621 // Lookup or create a jmethodID. | |
977
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1622 // This code is called by the VMThread and JavaThreads so the |
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1623 // locking has to be done very carefully to avoid deadlocks |
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1624 // and/or other cache consistency problems. |
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1625 // |
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1626 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1627 size_t idnum = (size_t)method_h->method_idnum(); |
1628 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1629 size_t length = 0; | |
1630 jmethodID id = NULL; | |
977
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|
1631 |
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1632 // We use a double-check locking idiom here because this cache is |
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1633 // performance sensitive. In the normal system, this cache only |
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1634 // transitions from NULL to non-NULL which is safe because we use |
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1635 // release_set_methods_jmethod_ids() to advertise the new cache. |
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1636 // A partially constructed cache should never be seen by a racing |
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1637 // thread. We also use release_store_ptr() to save a new jmethodID |
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|
1638 // in the cache so a partially constructed jmethodID should never be |
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1639 // seen either. Cache reads of existing jmethodIDs proceed without a |
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1640 // lock, but cache writes of a new jmethodID requires uniqueness and |
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1641 // creation of the cache itself requires no leaks so a lock is |
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|
1642 // generally acquired in those two cases. |
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|
1643 // |
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|
1644 // If the RedefineClasses() API has been used, then this cache can |
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1645 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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1646 // Cache creation requires no leaks and we require safety between all |
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1647 // cache accesses and freeing of the old cache so a lock is generally |
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|
1648 // acquired when the RedefineClasses() API has been used. |
0 | 1649 |
977
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|
1650 if (jmeths != NULL) { |
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|
1651 // the cache already exists |
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|
1652 if (!ik_h->idnum_can_increment()) { |
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1653 // the cache can't grow so we can just get the current values |
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1654 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1655 } else { |
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1656 // cache can grow so we have to be more careful |
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1657 if (Threads::number_of_threads() == 0 || |
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1658 SafepointSynchronize::is_at_safepoint()) { |
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1659 // we're single threaded or at a safepoint - no locking needed |
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1660 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1661 } else { |
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1662 MutexLocker ml(JmethodIdCreation_lock); |
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1663 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1664 } |
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|
1665 } |
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|
1666 } |
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1667 // implied else: |
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1668 // we need to allocate a cache so default length and id values are good |
0 | 1669 |
977
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1670 if (jmeths == NULL || // no cache yet |
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1671 length <= idnum || // cache is too short |
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1672 id == NULL) { // cache doesn't contain entry |
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1673 |
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1674 // This function can be called by the VMThread so we have to do all |
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1675 // things that might block on a safepoint before grabbing the lock. |
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1676 // Otherwise, we can deadlock with the VMThread or have a cache |
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1677 // consistency issue. These vars keep track of what we might have |
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1678 // to free after the lock is dropped. |
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1679 jmethodID to_dealloc_id = NULL; |
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1680 jmethodID* to_dealloc_jmeths = NULL; |
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1681 |
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1682 // may not allocate new_jmeths or use it if we allocate it |
0 | 1683 jmethodID* new_jmeths = NULL; |
1684 if (length <= idnum) { | |
977
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1685 // allocate a new cache that might be used |
0 | 1686 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1687 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1688 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
977
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1689 // cache size is stored in element[0], other elements offset by one |
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1690 new_jmeths[0] = (jmethodID)size; |
0 | 1691 } |
1692 | |
977
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1693 // allocate a new jmethodID that might be used |
0 | 1694 jmethodID new_id = NULL; |
1695 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1696 // The method passed in is old (but not obsolete), we need to use the current version | |
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1697 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1698 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1699 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1700 } else { |
1701 // It is the current version of the method or an obsolete method, | |
1702 // use the version passed in | |
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1703 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1704 } |
1705 | |
977
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1706 if (Threads::number_of_threads() == 0 || |
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1707 SafepointSynchronize::is_at_safepoint()) { |
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1708 // we're single threaded or at a safepoint - no locking needed |
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1709 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1710 &to_dealloc_id, &to_dealloc_jmeths); |
49
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1711 } else { |
0 | 1712 MutexLocker ml(JmethodIdCreation_lock); |
977
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1713 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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|
1714 &to_dealloc_id, &to_dealloc_jmeths); |
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|
1715 } |
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|
1716 |
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1717 // The lock has been dropped so we can free resources. |
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1718 // Free up either the old cache or the new cache if we allocated one. |
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1719 if (to_dealloc_jmeths != NULL) { |
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1720 FreeHeap(to_dealloc_jmeths); |
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|
1721 } |
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1722 // free up the new ID since it wasn't needed |
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1723 if (to_dealloc_id != NULL) { |
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1724 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
49
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1725 } |
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|
1726 } |
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1727 return id; |
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1728 } |
0 | 1729 |
49
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1730 |
977
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1731 // Common code to fetch the jmethodID from the cache or update the |
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1732 // cache with the new jmethodID. This function should never do anything |
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1733 // that causes the caller to go to a safepoint or we can deadlock with |
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1734 // the VMThread or have cache consistency issues. |
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|
1735 // |
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1736 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
977
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1737 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1738 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1739 jmethodID** to_dealloc_jmeths_p) { |
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|
1740 assert(new_id != NULL, "sanity check"); |
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|
1741 assert(to_dealloc_id_p != NULL, "sanity check"); |
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|
1742 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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|
1743 assert(Threads::number_of_threads() == 0 || |
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1744 SafepointSynchronize::is_at_safepoint() || |
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|
1745 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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|
1746 |
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|
1747 // reacquire the cache - we are locked, single threaded or at a safepoint |
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|
1748 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
977
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|
1749 jmethodID id = NULL; |
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|
1750 size_t length = 0; |
0 | 1751 |
977
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|
1752 if (jmeths == NULL || // no cache yet |
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|
1753 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
49
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|
1754 if (jmeths != NULL) { |
977
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|
1755 // copy any existing entries from the old cache |
49
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|
1756 for (size_t index = 0; index < length; index++) { |
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|
1757 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1758 } |
977
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|
1759 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1760 } |
49
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|
1761 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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|
1762 } else { |
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|
1763 // fetch jmethodID (if any) from the existing cache |
49
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|
1764 id = jmeths[idnum+1]; |
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|
1765 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
49
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|
1766 } |
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|
1767 if (id == NULL) { |
977
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1768 // No matching jmethodID in the existing cache or we have a new |
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|
1769 // cache or we just grew the cache. This cache write is done here |
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1770 // by the first thread to win the foot race because a jmethodID |
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|
1771 // needs to be unique once it is generally available. |
49
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|
1772 id = new_id; |
977
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|
1773 |
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|
1774 // The jmethodID cache can be read while unlocked so we have to |
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|
1775 // make sure the new jmethodID is complete before installing it |
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|
1776 // in the cache. |
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|
1777 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
49
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|
1778 } else { |
977
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|
1779 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1780 } |
1781 return id; | |
1782 } | |
1783 | |
1784 | |
977
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|
1785 // Common code to get the jmethodID cache length and the jmethodID |
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|
1786 // value at index idnum if there is one. |
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|
1787 // |
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|
1788 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
977
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|
1789 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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|
1790 assert(cache != NULL, "sanity check"); |
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1791 assert(length_p != NULL, "sanity check"); |
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1792 assert(id_p != NULL, "sanity check"); |
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1793 |
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1794 // cache size is stored in element[0], other elements offset by one |
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1795 *length_p = (size_t)cache[0]; |
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1796 if (*length_p <= idnum) { // cache is too short |
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1797 *id_p = NULL; |
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1798 } else { |
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1799 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1800 } |
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1801 } |
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1802 |
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1803 |
0 | 1804 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1805 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1806 size_t idnum = (size_t)method->method_idnum(); |
1807 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1808 size_t length; // length assigned as debugging crumb | |
1809 jmethodID id = NULL; | |
977
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1810 if (jmeths != NULL && // If there is a cache |
0 | 1811 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1812 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1813 } | |
1814 return id; | |
1815 } | |
1816 | |
1817 | |
1818 // | |
1819 // Walk the list of dependent nmethods searching for nmethods which | |
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1820 // are dependent on the changes that were passed in and mark them for |
0 | 1821 // deoptimization. Returns the number of nmethods found. |
1822 // | |
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1823 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1824 assert_locked_or_safepoint(CodeCache_lock); |
1825 int found = 0; | |
1826 nmethodBucket* b = _dependencies; | |
1827 while (b != NULL) { | |
1828 nmethod* nm = b->get_nmethod(); | |
1829 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1830 // the dependency list may contain nmethods which aren't alive. | |
1831 if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { | |
1832 if (TraceDependencies) { | |
1833 ResourceMark rm; | |
1834 tty->print_cr("Marked for deoptimization"); | |
1835 tty->print_cr(" context = %s", this->external_name()); | |
1836 changes.print(); | |
1837 nm->print(); | |
1838 nm->print_dependencies(); | |
1839 } | |
1840 nm->mark_for_deoptimization(); | |
1841 found++; | |
1842 } | |
1843 b = b->next(); | |
1844 } | |
1845 return found; | |
1846 } | |
1847 | |
1848 | |
1849 // | |
1850 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1851 // It's possible that an nmethod has multiple dependencies on this klass | |
1852 // so a count is kept for each bucket to guarantee that creation and | |
1853 // deletion of dependencies is consistent. | |
1854 // | |
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1855 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1856 assert_locked_or_safepoint(CodeCache_lock); |
1857 nmethodBucket* b = _dependencies; | |
1858 nmethodBucket* last = NULL; | |
1859 while (b != NULL) { | |
1860 if (nm == b->get_nmethod()) { | |
1861 b->increment(); | |
1862 return; | |
1863 } | |
1864 b = b->next(); | |
1865 } | |
1866 _dependencies = new nmethodBucket(nm, _dependencies); | |
1867 } | |
1868 | |
1869 | |
1870 // | |
1871 // Decrement count of the nmethod in the dependency list and remove | |
1872 // the bucket competely when the count goes to 0. This method must | |
1873 // find a corresponding bucket otherwise there's a bug in the | |
1874 // recording of dependecies. | |
1875 // | |
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1876 void InstanceKlass::remove_dependent_nmethod(nmethod* nm) { |
0 | 1877 assert_locked_or_safepoint(CodeCache_lock); |
1878 nmethodBucket* b = _dependencies; | |
1879 nmethodBucket* last = NULL; | |
1880 while (b != NULL) { | |
1881 if (nm == b->get_nmethod()) { | |
1882 if (b->decrement() == 0) { | |
1883 if (last == NULL) { | |
1884 _dependencies = b->next(); | |
1885 } else { | |
1886 last->set_next(b->next()); | |
1887 } | |
1888 delete b; | |
1889 } | |
1890 return; | |
1891 } | |
1892 last = b; | |
1893 b = b->next(); | |
1894 } | |
1895 #ifdef ASSERT | |
1896 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
1897 nm->print(); | |
1898 #endif // ASSERT | |
1899 ShouldNotReachHere(); | |
1900 } | |
1901 | |
1902 | |
1903 #ifndef PRODUCT | |
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1904 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 1905 nmethodBucket* b = _dependencies; |
1906 int idx = 0; | |
1907 while (b != NULL) { | |
1908 nmethod* nm = b->get_nmethod(); | |
1909 tty->print("[%d] count=%d { ", idx++, b->count()); | |
1910 if (!verbose) { | |
1911 nm->print_on(tty, "nmethod"); | |
1912 tty->print_cr(" } "); | |
1913 } else { | |
1914 nm->print(); | |
1915 nm->print_dependencies(); | |
1916 tty->print_cr("--- } "); | |
1917 } | |
1918 b = b->next(); | |
1919 } | |
1920 } | |
1921 | |
1922 | |
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1923 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 1924 nmethodBucket* b = _dependencies; |
1925 while (b != NULL) { | |
1926 if (nm == b->get_nmethod()) { | |
1927 return true; | |
1928 } | |
1929 b = b->next(); | |
1930 } | |
1931 return false; | |
1932 } | |
1933 #endif //PRODUCT | |
1934 | |
1935 | |
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1936 // Garbage collection |
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1937 |
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1938 #ifdef ASSERT |
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1939 template <class T> void assert_is_in(T *p) { |
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1940 T heap_oop = oopDesc::load_heap_oop(p); |
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1941 if (!oopDesc::is_null(heap_oop)) { |
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1942 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1943 assert(Universe::heap()->is_in(o), "should be in heap"); |
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1944 } |
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1945 } |
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1946 template <class T> void assert_is_in_closed_subset(T *p) { |
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1947 T heap_oop = oopDesc::load_heap_oop(p); |
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1948 if (!oopDesc::is_null(heap_oop)) { |
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1949 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1950 assert(Universe::heap()->is_in_closed_subset(o), |
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1951 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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1952 } |
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1953 } |
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1954 template <class T> void assert_is_in_reserved(T *p) { |
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1955 T heap_oop = oopDesc::load_heap_oop(p); |
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1956 if (!oopDesc::is_null(heap_oop)) { |
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1957 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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1958 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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1959 } |
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1960 } |
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1961 template <class T> void assert_nothing(T *p) {} |
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1962 |
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1963 #else |
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1964 template <class T> void assert_is_in(T *p) {} |
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1965 template <class T> void assert_is_in_closed_subset(T *p) {} |
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1966 template <class T> void assert_is_in_reserved(T *p) {} |
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1967 template <class T> void assert_nothing(T *p) {} |
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1968 #endif // ASSERT |
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1969 |
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1970 // |
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1971 // Macros that iterate over areas of oops which are specialized on type of |
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1972 // oop pointer either narrow or wide, depending on UseCompressedOops |
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1973 // |
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1974 // Parameters are: |
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1975 // T - type of oop to point to (either oop or narrowOop) |
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1976 // start_p - starting pointer for region to iterate over |
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1977 // count - number of oops or narrowOops to iterate over |
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1978 // do_oop - action to perform on each oop (it's arbitrary C code which |
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1979 // makes it more efficient to put in a macro rather than making |
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1980 // it a template function) |
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1981 // assert_fn - assert function which is template function because performance |
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1982 // doesn't matter when enabled. |
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1983 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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1984 T, start_p, count, do_oop, \ |
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1985 assert_fn) \ |
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1986 { \ |
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1987 T* p = (T*)(start_p); \ |
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1988 T* const end = p + (count); \ |
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1989 while (p < end) { \ |
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1990 (assert_fn)(p); \ |
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1991 do_oop; \ |
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1992 ++p; \ |
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1993 } \ |
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1994 } |
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1995 |
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1996 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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1997 T, start_p, count, do_oop, \ |
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1998 assert_fn) \ |
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1999 { \ |
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2000 T* const start = (T*)(start_p); \ |
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2001 T* p = start + (count); \ |
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2002 while (start < p) { \ |
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2003 --p; \ |
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2004 (assert_fn)(p); \ |
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2005 do_oop; \ |
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2006 } \ |
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2007 } |
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2008 |
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2009 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2010 T, start_p, count, low, high, \ |
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2011 do_oop, assert_fn) \ |
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2012 { \ |
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2013 T* const l = (T*)(low); \ |
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2014 T* const h = (T*)(high); \ |
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2015 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2016 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2017 "bounded region must be properly aligned"); \ |
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2018 T* p = (T*)(start_p); \ |
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2019 T* end = p + (count); \ |
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2020 if (p < l) p = l; \ |
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2021 if (end > h) end = h; \ |
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2022 while (p < end) { \ |
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2023 (assert_fn)(p); \ |
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2024 do_oop; \ |
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2025 ++p; \ |
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2026 } \ |
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2027 } |
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2028 |
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2029 |
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2030 // The following macros call specialized macros, passing either oop or |
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2031 // narrowOop as the specialization type. These test the UseCompressedOops |
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2032 // flag. |
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2033 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2034 { \ |
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2035 /* Compute oopmap block range. The common case \ |
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2036 is nonstatic_oop_map_size == 1. */ \ |
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2037 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2038 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2039 if (UseCompressedOops) { \ |
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2040 while (map < end_map) { \ |
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2041 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2042 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2043 do_oop, assert_fn) \ |
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2044 ++map; \ |
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2045 } \ |
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2046 } else { \ |
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2047 while (map < end_map) { \ |
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2048 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2049 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2050 do_oop, assert_fn) \ |
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2051 ++map; \ |
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2052 } \ |
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2053 } \ |
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2054 } |
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2055 |
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2056 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2057 { \ |
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2058 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2059 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2060 if (UseCompressedOops) { \ |
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2061 while (start_map < map) { \ |
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2062 --map; \ |
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2063 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2064 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2065 do_oop, assert_fn) \ |
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2066 } \ |
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2067 } else { \ |
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2068 while (start_map < map) { \ |
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2069 --map; \ |
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2070 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2071 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2072 do_oop, assert_fn) \ |
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2073 } \ |
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2074 } \ |
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2075 } |
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2076 |
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2077 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2078 assert_fn) \ |
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2079 { \ |
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2080 /* Compute oopmap block range. The common case is \ |
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2081 nonstatic_oop_map_size == 1, so we accept the \ |
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2082 usually non-existent extra overhead of examining \ |
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2083 all the maps. */ \ |
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2084 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2085 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2086 if (UseCompressedOops) { \ |
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2087 while (map < end_map) { \ |
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2088 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2089 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2090 low, high, \ |
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2091 do_oop, assert_fn) \ |
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2092 ++map; \ |
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2093 } \ |
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2094 } else { \ |
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2095 while (map < end_map) { \ |
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2096 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2097 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2098 low, high, \ |
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2099 do_oop, assert_fn) \ |
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2100 ++map; \ |
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2101 } \ |
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2102 } \ |
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2103 } |
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2104 |
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2105 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2106 assert(obj != NULL, "can't follow the content of NULL object"); |
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2107 MarkSweep::follow_klass(obj->klass()); |
113
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2108 InstanceKlass_OOP_MAP_ITERATE( \ |
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2109 obj, \ |
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2110 MarkSweep::mark_and_push(p), \ |
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2111 assert_is_in_closed_subset) |
0 | 2112 } |
2113 | |
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2114 #if INCLUDE_ALL_GCS |
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2115 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2116 oop obj) { |
113
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2117 assert(obj != NULL, "can't follow the content of NULL object"); |
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2118 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2119 // Only mark the header and let the scan of the meta-data mark |
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2120 // everything else. |
113
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2121 InstanceKlass_OOP_MAP_ITERATE( \ |
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2122 obj, \ |
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2123 PSParallelCompact::mark_and_push(cm, p), \ |
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2124 assert_is_in) |
0 | 2125 } |
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2126 #endif // INCLUDE_ALL_GCS |
0 | 2127 |
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2128 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2129 // applied to the klass ptr in the object header. |
2130 | |
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2131 #define if_do_metadata_checked(closure, nv_suffix) \ |
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2132 /* Make sure the non-virtual and the virtual versions match. */ \ |
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2133 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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2134 "Inconsistency in do_metadata"); \ |
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2135 if (closure->do_metadata##nv_suffix()) |
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2136 |
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2137 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2138 \ |
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2139 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2140 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2141 /* header */ \ |
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2142 if_do_metadata_checked(closure, nv_suffix) { \ |
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2143 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2144 } \ |
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2145 InstanceKlass_OOP_MAP_ITERATE( \ |
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2146 obj, \ |
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2147 SpecializationStats:: \ |
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2148 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2149 (closure)->do_oop##nv_suffix(p), \ |
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2150 assert_is_in_closed_subset) \ |
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2151 return size_helper(); \ |
0 | 2152 } |
2153 | |
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2154 #if INCLUDE_ALL_GCS |
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2155 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2156 \ |
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2157 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2158 OopClosureType* closure) { \ |
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2159 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
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2160 /* header */ \ |
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2161 if_do_metadata_checked(closure, nv_suffix) { \ |
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2162 closure->do_klass##nv_suffix(obj->klass()); \ |
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2163 } \ |
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2164 /* instance variables */ \ |
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2165 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2166 obj, \ |
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2167 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2168 (closure)->do_oop##nv_suffix(p), \ |
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2169 assert_is_in_closed_subset) \ |
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2170 return size_helper(); \ |
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2171 } |
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2172 #endif // INCLUDE_ALL_GCS |
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2173 |
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2174 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2175 \ |
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2176 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2177 OopClosureType* closure, \ |
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2178 MemRegion mr) { \ |
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2179 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2180 if_do_metadata_checked(closure, nv_suffix) { \ |
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2181 if (mr.contains(obj)) { \ |
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2182 closure->do_klass##nv_suffix(obj->klass()); \ |
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2183 } \ |
113
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2184 } \ |
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2185 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2186 obj, mr.start(), mr.end(), \ |
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2187 (closure)->do_oop##nv_suffix(p), \ |
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2188 assert_is_in_closed_subset) \ |
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2189 return size_helper(); \ |
0 | 2190 } |
2191 | |
2192 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2193 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2194 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2195 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2196 #if INCLUDE_ALL_GCS |
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2197 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2198 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2199 #endif // INCLUDE_ALL_GCS |
0 | 2200 |
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2201 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2202 int size = size_helper(); |
113
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2203 InstanceKlass_OOP_MAP_ITERATE( \ |
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2204 obj, \ |
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2205 MarkSweep::adjust_pointer(p), \ |
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2206 assert_is_in) |
0 | 2207 return size; |
2208 } | |
2209 | |
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2210 #if INCLUDE_ALL_GCS |
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2211 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
113
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2212 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2213 obj, \ |
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2214 if (PSScavenge::should_scavenge(p)) { \ |
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2215 pm->claim_or_forward_depth(p); \ |
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2216 }, \ |
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2217 assert_nothing ) |
0 | 2218 } |
2219 | |
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2220 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2221 int size = size_helper(); |
113
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2222 InstanceKlass_OOP_MAP_ITERATE( \ |
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2223 obj, \ |
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2224 PSParallelCompact::adjust_pointer(p), \ |
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2225 assert_is_in) |
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2226 return size; |
0 | 2227 } |
2228 | |
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2229 #endif // INCLUDE_ALL_GCS |
0 | 2230 |
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2231 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
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2232 assert(is_loader_alive(is_alive), "this klass should be live"); |
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2233 if (is_interface()) { |
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2234 if (ClassUnloading) { |
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2235 Klass* impl = implementor(); |
5998
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2236 if (impl != NULL) { |
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2237 if (!impl->is_loader_alive(is_alive)) { |
5998
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2238 // remove this guy |
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2239 Klass** klass = adr_implementor(); |
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2240 assert(klass != NULL, "null klass"); |
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2241 if (klass != NULL) { |
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2242 *klass = NULL; |
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2243 } |
5998
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2244 } |
0 | 2245 } |
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2246 } |
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2247 } |
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2248 } |
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2249 |
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2250 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
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2251 for (int m = 0; m < methods()->length(); m++) { |
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2252 MethodData* mdo = methods()->at(m)->method_data(); |
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2253 if (mdo != NULL) { |
14909 | 2254 for (ProfileData* data = mdo->first_data(); |
2255 mdo->is_valid(data); | |
2256 data = mdo->next_data(data)) { | |
2257 data->clean_weak_klass_links(is_alive); | |
2258 } | |
2259 ParametersTypeData* parameters = mdo->parameters_type_data(); | |
2260 if (parameters != NULL) { | |
2261 parameters->clean_weak_klass_links(is_alive); | |
2262 } | |
0 | 2263 } |
2264 } | |
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2265 } |
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2266 |
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2267 |
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2268 static void remove_unshareable_in_class(Klass* k) { |
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2269 // remove klass's unshareable info |
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2270 k->remove_unshareable_info(); |
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2271 } |
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2272 |
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2273 void InstanceKlass::remove_unshareable_info() { |
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2274 Klass::remove_unshareable_info(); |
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|
2275 // Unlink the class |
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|
2276 if (is_linked()) { |
da91efe96a93
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|
2277 unlink_class(); |
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|
2278 } |
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|
2279 init_implementor(); |
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|
2280 |
15052
5e6f29f287d6
added InstanceKlass::_graal_node_class field to accelerate Node.getNodeClass()
Doug Simon <doug.simon@oracle.com>
parents:
14909
diff
changeset
|
2281 #ifdef GRAAL |
5e6f29f287d6
added InstanceKlass::_graal_node_class field to accelerate Node.getNodeClass()
Doug Simon <doug.simon@oracle.com>
parents:
14909
diff
changeset
|
2282 set_graal_node_class(NULL); |
5e6f29f287d6
added InstanceKlass::_graal_node_class field to accelerate Node.getNodeClass()
Doug Simon <doug.simon@oracle.com>
parents:
14909
diff
changeset
|
2283 #endif |
5e6f29f287d6
added InstanceKlass::_graal_node_class field to accelerate Node.getNodeClass()
Doug Simon <doug.simon@oracle.com>
parents:
14909
diff
changeset
|
2284 |
6725
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|
2285 constants()->remove_unshareable_info(); |
da91efe96a93
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diff
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|
2286 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2287 for (int i = 0; i < methods()->length(); i++) { |
da91efe96a93
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diff
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|
2288 Method* m = methods()->at(i); |
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|
2289 m->remove_unshareable_info(); |
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|
2290 } |
da91efe96a93
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parents:
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changeset
|
2291 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2292 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2293 array_klasses_do(remove_unshareable_in_class); |
0 | 2294 } |
2295 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2296 void restore_unshareable_in_class(Klass* k, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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|
2297 k->restore_unshareable_info(CHECK); |
0 | 2298 } |
2299 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2300 void InstanceKlass::restore_unshareable_info(TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2301 Klass::restore_unshareable_info(CHECK); |
da91efe96a93
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|
2302 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2303 |
da91efe96a93
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diff
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|
2304 Array<Method*>* methods = ik->methods(); |
da91efe96a93
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parents:
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|
2305 int num_methods = methods->length(); |
da91efe96a93
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coleenp
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diff
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|
2306 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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|
2307 methodHandle m(THREAD, methods->at(index2)); |
da91efe96a93
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coleenp
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|
2308 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
|
2309 // 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
|
2310 m->restore_vtable(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
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|
2311 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
2312 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2313 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2314 // 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
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|
2315 // 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
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|
2316 // 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
|
2317 // 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
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|
2318 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2319 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
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|
2320 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
2321 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2322 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2323 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2324 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
2325 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2326 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
2327 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2328 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2329 static void clear_all_breakpoints(Method* m) { |
0 | 2330 m->clear_all_breakpoints(); |
2331 } | |
2332 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2333 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2334 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2335 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2336 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2337 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2338 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2339 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2340 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2341 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2342 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2343 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2344 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
|
2345 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2346 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2347 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2348 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2349 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2350 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2351 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2352 // 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
|
2353 // 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
|
2354 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2355 |
0 | 2356 // Deallocate oop map cache |
2357 if (_oop_map_cache != NULL) { | |
2358 delete _oop_map_cache; | |
2359 _oop_map_cache = NULL; | |
2360 } | |
2361 | |
2362 // Deallocate JNI identifiers for jfieldIDs | |
2363 JNIid::deallocate(jni_ids()); | |
2364 set_jni_ids(NULL); | |
2365 | |
2366 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2367 if (jmeths != (jmethodID*)NULL) { | |
2368 release_set_methods_jmethod_ids(NULL); | |
2369 FreeHeap(jmeths); | |
2370 } | |
2371 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2372 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2373 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2374 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
|
2375 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
|
2376 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2377 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2378 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2379 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2380 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2381 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2382 |
0 | 2383 // release dependencies |
2384 nmethodBucket* b = _dependencies; | |
2385 _dependencies = NULL; | |
2386 while (b != NULL) { | |
2387 nmethodBucket* next = b->next(); | |
2388 delete b; | |
2389 b = next; | |
2390 } | |
2391 | |
2392 // Deallocate breakpoint records | |
2393 if (breakpoints() != 0x0) { | |
2394 methods_do(clear_all_breakpoints); | |
2395 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2396 } | |
2397 | |
2398 // deallocate information about previous versions | |
2399 if (_previous_versions != NULL) { | |
2400 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2401 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2402 delete pv_node; | |
2403 } | |
2404 delete _previous_versions; | |
2405 _previous_versions = NULL; | |
2406 } | |
2407 | |
2408 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2409 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2410 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2411 _cached_class_file = NULL; |
0 | 2412 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2413 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2414 // 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
|
2415 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2416 // 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
|
2417 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2418 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
|
2419 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
|
2420 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2421 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2422 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2423 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2424 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2425 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
|
2426 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2427 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2428 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2429 // 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
|
2430 // 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
|
2431 // 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
|
2432 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2433 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2434 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
|
2435 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2436 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2437 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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6197
diff
changeset
|
2438 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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diff
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|
2439 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
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parents:
6197
diff
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|
2440 } |
0 | 2441 } |
2442 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2443 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
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12287
diff
changeset
|
2444 return (address)(offset + InstanceMirrorKlass::offset_of_static_fields() + cast_from_oop<intptr_t>(java_mirror())); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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2357
diff
changeset
|
2445 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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diff
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|
2446 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
2447 |
6725
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|
2448 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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parents:
12946
diff
changeset
|
2449 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2450 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2451 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
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12946
diff
changeset
|
2452 // If this is an anonymous class, append a hash to make the name unique |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
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12946
diff
changeset
|
2453 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2454 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2455 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
|
2456 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2457 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2458 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2459 |
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8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2460 // Get the internal name as a c string |
0 | 2461 const char* src = (const char*) (name()->as_C_string()); |
2462 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
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|
2463 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2464 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2465 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2466 // Add L as type indicator |
0 | 2467 int dest_index = 0; |
2468 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2469 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2470 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2471 for (int src_index = 0; src_index < src_length; ) { |
0 | 2472 dest[dest_index++] = src[src_index++]; |
2473 } | |
12995
e64f1fe9756b
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farvidsson
parents:
12946
diff
changeset
|
2474 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2475 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2476 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2477 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2478 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2479 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2480 // Add the semicolon and the NULL |
0 | 2481 dest[dest_index++] = ';'; |
2482 dest[dest_index] = '\0'; | |
2483 return dest; | |
2484 } | |
2485 | |
2486 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2487 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2488 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2489 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2490 Symbol* classname1 = class1->name(); |
2491 | |
2492 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2493 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2494 } |
2495 oop classloader2; | |
6983 | 2496 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2497 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2498 } else { |
6983 | 2499 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2500 classloader2 = NULL; |
2501 } | |
6983 | 2502 Symbol* classname2 = class2->name(); |
0 | 2503 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2504 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2505 classloader2, classname2); |
2506 } | |
2507 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2508 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2509 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2510 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2511 Symbol* classname1 = class1->name(); |
0 | 2512 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2513 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2514 classloader2, classname2); |
2515 } | |
2516 | |
2517 // return true if two classes are in the same package, classloader | |
2518 // and classname information is enough to determine a class's package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2519 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2520 oop class_loader2, Symbol* class_name2) { |
0 | 2521 if (class_loader1 != class_loader2) { |
2522 return false; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2523 } else if (class_name1 == class_name2) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2524 return true; // skip painful bytewise comparison |
0 | 2525 } else { |
2526 ResourceMark rm; | |
2527 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2528 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2529 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2530 // Otherwise, we just compare jbyte values between the strings. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2531 const jbyte *name1 = class_name1->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2532 const jbyte *name2 = class_name2->base(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2533 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2534 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
|
2535 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2536 |
2537 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2538 // One of the two doesn't have a package. Only return true | |
2539 // if the other one also doesn't have a package. | |
2540 return last_slash1 == last_slash2; | |
2541 } else { | |
2542 // Skip over '['s | |
2543 if (*name1 == '[') { | |
2544 do { | |
2545 name1++; | |
2546 } while (*name1 == '['); | |
2547 if (*name1 != 'L') { | |
2548 // Something is terribly wrong. Shouldn't be here. | |
2549 return false; | |
2550 } | |
2551 } | |
2552 if (*name2 == '[') { | |
2553 do { | |
2554 name2++; | |
2555 } while (*name2 == '['); | |
2556 if (*name2 != 'L') { | |
2557 // Something is terribly wrong. Shouldn't be here. | |
2558 return false; | |
2559 } | |
2560 } | |
2561 | |
2562 // Check that package part is identical | |
2563 int length1 = last_slash1 - name1; | |
2564 int length2 = last_slash2 - name2; | |
2565 | |
2566 return UTF8::equal(name1, length1, name2, length2); | |
2567 } | |
2568 } | |
2569 } | |
2570 | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2571 // 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
|
2572 // See JSL 3rd edition 8.4.6.1 |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2573 // Assumes name-signature match |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2574 // "this" is InstanceKlass of super_method which must exist |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2575 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2576 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
|
2577 // Private methods can not be overridden |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2578 if (super_method->is_private()) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2579 return false; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2580 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2581 // If super method is accessible, then override |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2582 if ((super_method->is_protected()) || |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2583 (super_method->is_public())) { |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2584 return true; |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2585 } |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2586 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2587 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
|
2588 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
605
diff
changeset
|
2589 } |
0 | 2590 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2591 /* 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
|
2592 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
|
2593 Symbol*& simple_name_result, TRAPS) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2594 ... |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2595 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2596 */ |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2597 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2598 // 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
|
2599 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
|
2600 Klass* class2_oop, TRAPS) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2601 if (class2_oop == class1()) return true; |
6983 | 2602 if (!class2_oop->oop_is_instance()) return false; |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2603 instanceKlassHandle class2(THREAD, class2_oop); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2604 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2605 // must be in same package before we try anything else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2606 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2607 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2608 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2609 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2610 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2611 instanceKlassHandle outer1 = class1; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2612 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2613 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2614 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2615 // 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
|
2616 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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|
2617 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
|
2618 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2619 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2620 if (next == class2()) return true; |
c89f86385056
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2621 outer1 = instanceKlassHandle(THREAD, next); |
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|
2622 } |
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|
2623 |
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diff
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|
2624 // Now do the same for class2. |
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|
2625 instanceKlassHandle outer2 = class2; |
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|
2626 for (;;) { |
1126
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|
2627 bool ignore_inner_is_member; |
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2628 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
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|
2629 CHECK_false); |
665
c89f86385056
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|
2630 if (next == NULL) break; |
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|
2631 // Might as well check the new outer against all available values. |
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|
2632 if (next == class1()) return true; |
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|
2633 if (next == outer1()) return true; |
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|
2634 outer2 = instanceKlassHandle(THREAD, next); |
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|
2635 } |
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|
2636 |
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|
2637 // If by this point we have not found an equality between the |
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|
2638 // two classes, we know they are in separate package members. |
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diff
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|
2639 return false; |
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|
2640 } |
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|
2641 |
0 | 2642 |
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2643 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2644 jint access = access_flags().as_int(); |
2645 | |
2646 // But check if it happens to be member class. | |
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2647 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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2648 InnerClassesIterator iter(ik); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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2649 for (; !iter.done(); iter.next()) { |
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2650 int ioff = iter.inner_class_info_index(); |
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2651 // Inner class attribute can be zero, skip it. |
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2652 // Strange but true: JVM spec. allows null inner class refs. |
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2653 if (ioff == 0) continue; |
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2654 |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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2655 // only look at classes that are already loaded |
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2656 // since we are looking for the flags for our self. |
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2657 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
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2658 if ((ik->name() == inner_name)) { |
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|
2659 // This is really a member class. |
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|
2660 access = iter.inner_access_flags(); |
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|
2661 break; |
0 | 2662 } |
2663 } | |
2664 // Remember to strip ACC_SUPER bit | |
2665 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2666 } | |
2667 | |
6725
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2668 jint InstanceKlass::jvmti_class_status() const { |
0 | 2669 jint result = 0; |
2670 | |
2671 if (is_linked()) { | |
2672 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2673 } | |
2674 | |
2675 if (is_initialized()) { | |
2676 assert(is_linked(), "Class status is not consistent"); | |
2677 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2678 } | |
2679 if (is_in_error_state()) { | |
2680 result |= JVMTI_CLASS_STATUS_ERROR; | |
2681 } | |
2682 return result; | |
2683 } | |
2684 | |
6725
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2685 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2686 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2687 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2688 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2689 / itableOffsetEntry::size(); | |
2690 | |
2691 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2692 // If the interface isn't implemented by the receiver class, |
0 | 2693 // the VM should throw IncompatibleClassChangeError. |
2694 if (cnt >= nof_interfaces) { | |
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2695 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2696 } |
2697 | |
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2698 Klass* ik = ioe->interface_klass(); |
0 | 2699 if (ik == holder) break; |
2700 } | |
2701 | |
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2702 itableMethodEntry* ime = ioe->first_method_entry(this); |
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2703 Method* m = ime[index].method(); |
0 | 2704 if (m == NULL) { |
6725
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2705 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2706 } |
2707 return m; | |
2708 } | |
2709 | |
12823
ac9cb1d5a202
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diff
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|
2710 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2711 #if INCLUDE_JVMTI |
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|
2712 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2713 // not yet in the vtable due to concurrent subclass define and superinterface |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2714 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
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|
2715 // Note: those in the vtable, should have been updated via adjust_method_entries |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2716 void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2717 int methods_length, bool* trace_name_printed) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2718 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2719 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2720 for (int j = 0; j < methods_length; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2721 Method* old_method = old_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
2722 Method* new_method = new_methods[j]; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
changeset
|
2723 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2724 for (int index = 0; index < default_methods()->length(); index ++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2725 if (default_methods()->at(index) == old_method) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2726 default_methods()->at_put(index, new_method); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2727 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2728 if (!(*trace_name_printed)) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2729 // RC_TRACE_MESG macro has an embedded ResourceMark |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2730 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2731 external_name(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2732 old_method->method_holder()->external_name())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2733 *trace_name_printed = true; |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2734 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2735 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2736 new_method->name()->as_C_string(), |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2737 new_method->signature()->as_C_string())); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2738 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2739 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2740 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2741 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
2742 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
2743 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2744 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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diff
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|
2745 |
0 | 2746 // On-stack replacement stuff |
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|
2747 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2748 // only one compilation can be active |
2749 NEEDS_CLEANUP | |
2750 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2751 OsrList_lock->lock_without_safepoint_check(); | |
2752 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
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jrose
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diff
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|
2753 n->set_osr_link(osr_nmethods_head()); |
0 | 2754 set_osr_nmethods_head(n); |
1783 | 2755 // Raise the highest osr level if necessary |
2756 if (TieredCompilation) { | |
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|
2757 Method* m = n->method(); |
1783 | 2758 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2759 } | |
0 | 2760 // Remember to unlock again |
2761 OsrList_lock->unlock(); | |
1783 | 2762 |
2763 // Get rid of the osr methods for the same bci that have lower levels. | |
2764 if (TieredCompilation) { | |
2765 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2766 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2767 if (inv != NULL && inv->is_in_use()) { | |
2768 inv->make_not_entrant(); | |
2769 } | |
2770 } | |
2771 } | |
0 | 2772 } |
2773 | |
2774 | |
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|
2775 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2776 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2777 OsrList_lock->lock_without_safepoint_check(); | |
2778 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2779 nmethod* last = NULL; | |
2780 nmethod* cur = osr_nmethods_head(); | |
1783 | 2781 int max_level = CompLevel_none; // Find the max comp level excluding n |
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|
2782 Method* m = n->method(); |
0 | 2783 // Search for match |
2784 while(cur != NULL && cur != n) { | |
14909 | 2785 if (TieredCompilation) { |
1783 | 2786 // Find max level before n |
2787 max_level = MAX2(max_level, cur->comp_level()); | |
2788 } | |
0 | 2789 last = cur; |
989
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|
2790 cur = cur->osr_link(); |
0 | 2791 } |
1783 | 2792 nmethod* next = NULL; |
0 | 2793 if (cur == n) { |
1783 | 2794 next = cur->osr_link(); |
0 | 2795 if (last == NULL) { |
2796 // Remove first element | |
1783 | 2797 set_osr_nmethods_head(next); |
0 | 2798 } else { |
1783 | 2799 last->set_osr_link(next); |
0 | 2800 } |
2801 } | |
989
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|
2802 n->set_osr_link(NULL); |
1783 | 2803 if (TieredCompilation) { |
2804 cur = next; | |
2805 while (cur != NULL) { | |
2806 // Find max level after n | |
14909 | 2807 max_level = MAX2(max_level, cur->comp_level()); |
1783 | 2808 cur = cur->osr_link(); |
2809 } | |
2810 m->set_highest_osr_comp_level(max_level); | |
2811 } | |
0 | 2812 // Remember to unlock again |
2813 OsrList_lock->unlock(); | |
2814 } | |
2815 | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
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10152
diff
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|
2816 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2817 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2818 OsrList_lock->lock_without_safepoint_check(); | |
2819 nmethod* osr = osr_nmethods_head(); | |
1783 | 2820 nmethod* best = NULL; |
0 | 2821 while (osr != NULL) { |
2822 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2823 // There can be a time when a c1 osr method exists but we are waiting |
2824 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2825 // the c1 version and only be able to find the c2 version. However | |
2826 // while we overflow in the c1 code at back branches we don't want to | |
2827 // try and switch to the same code as we are already running | |
2828 | |
0 | 2829 if (osr->method() == m && |
2830 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2831 if (match_level) { |
2832 if (osr->comp_level() == comp_level) { | |
2833 // Found a match - return it. | |
2834 OsrList_lock->unlock(); | |
2835 return osr; | |
2836 } | |
2837 } else { | |
2838 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
2839 if (osr->comp_level() == CompLevel_highest_tier) { | |
2840 // Found the best possible - return it. | |
2841 OsrList_lock->unlock(); | |
2842 return osr; | |
2843 } | |
2844 best = osr; | |
2845 } | |
2846 } | |
0 | 2847 } |
989
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changeset
|
2848 osr = osr->osr_link(); |
0 | 2849 } |
2850 OsrList_lock->unlock(); | |
1783 | 2851 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
2852 return best; | |
2853 } | |
0 | 2854 return NULL; |
2855 } | |
2856 | |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2857 void InstanceKlass::add_member_name(int index, Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2858 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2859 MutexLocker ml(MemberNameTable_lock); |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2860 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2861 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2862 |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2863 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2864 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2865 } |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2866 _member_names->add_member_name(index, mem_name_wref); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
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diff
changeset
|
2867 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2868 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2869 oop InstanceKlass::get_member_name(int index) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2870 MutexLocker ml(MemberNameTable_lock); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2871 assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds"); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2872 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2873 |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2874 if (_member_names == NULL) { |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2875 return NULL; |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2876 } |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2877 oop mem_name =_member_names->get_member_name(index); |
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
2878 return mem_name; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2879 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
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changeset
|
2880 |
0 | 2881 // ----------------------------------------------------------------------------------------------------- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2882 // Printing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2883 |
0 | 2884 #ifndef PRODUCT |
2885 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2886 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2887 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2888 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2889 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2890 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
2891 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2892 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2893 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2894 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2895 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2896 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2897 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2898 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2899 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2900 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2901 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2902 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
2903 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2904 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2905 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2906 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2907 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2908 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2909 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2910 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2911 st->print(BULLET"state: "); st->print_cr(state_names[_init_state]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2912 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2913 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2914 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2915 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2916 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2917 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2918 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2919 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2920 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2921 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2922 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2923 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2924 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2925 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2926 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2927 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2928 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2929 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2930 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2931 implementor()->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 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2935 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2936 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
|
2937 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
|
2938 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2939 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2940 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
|
2941 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
|
2942 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2943 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2944 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
|
2945 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
|
2946 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2947 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2948 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2949 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
|
2950 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2951 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2952 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2953 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
|
2954 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2955 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
|
2956 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
|
2957 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
|
2958 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2959 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2960 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2961 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2962 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2963 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
|
2964 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2965 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2966 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2967 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2968 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2969 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2970 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2971 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2972 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2973 } |
8031 | 2974 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
2975 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
2976 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
2977 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2978 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2979 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2980 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2981 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
|
2982 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
|
2983 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2984 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2985 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2986 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
|
2987 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2988 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
2989 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2993 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 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
|
2997 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
|
2998 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
|
2999 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
|
3000 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
|
3001 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
|
3002 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
|
3003 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3004 ((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
|
3005 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
|
3006 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3007 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3008 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3009 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3010 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3011 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3012 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3013 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
|
3014 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3015 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3016 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3017 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3018 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3019 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3020 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3021 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3022 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
|
3023 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
|
3024 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3025 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3026 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3027 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3028 |
0 | 3029 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3030 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3031 if (_obj == NULL) { |
0 | 3032 fd->print_on(_st); |
3033 _st->cr(); | |
3034 } else { | |
3035 fd->print_on_for(_st, _obj); | |
3036 _st->cr(); | |
3037 } | |
3038 } | |
3039 | |
3040 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3041 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3042 Klass::oop_print_on(obj, st); |
3043 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3044 if (this == SystemDictionary::String_klass()) { |
0 | 3045 typeArrayOop value = java_lang_String::value(obj); |
3046 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
|
3047 if (value != NULL) { |
0 | 3048 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
|
3049 if (value->is_typeArray() && |
0 | 3050 offset <= (juint) value->length() && |
3051 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3052 st->print(BULLET"string: "); |
14909 | 3053 Handle h_obj(obj); |
3054 java_lang_String::print(h_obj, st); | |
0 | 3055 st->cr(); |
3056 if (!WizardMode) return; // that is enough | |
3057 } | |
3058 } | |
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
|
3059 } |
0 | 3060 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3061 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
|
3062 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3063 do_nonstatic_fields(&print_field); |
0 | 3064 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3065 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3066 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3067 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3068 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3069 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3070 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3071 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3072 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3073 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3074 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3075 array_klass->print_value_on_maybe_null(st); |
0 | 3076 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3077 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
|
3078 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
|
3079 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
|
3080 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
|
3081 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
|
3082 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3083 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3084 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3085 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3086 st->cr(); |
0 | 3087 } |
3088 } | |
3089 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3090 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3091 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3092 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3093 st->print("a "); |
3094 name()->print_value_on(st); | |
3095 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3096 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3097 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3098 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3099 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3100 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3101 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3102 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3103 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3104 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3105 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3106 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3107 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3108 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3109 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3110 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3111 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3112 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3113 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3114 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3115 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3116 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
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3117 } else if (java_lang_boxing_object::is_instance(obj)) { |
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3118 st->print(" = "); |
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3119 java_lang_boxing_object::print(obj, st); |
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3120 } else if (this == SystemDictionary::LambdaForm_klass()) { |
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3121 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
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3122 if (vmentry != NULL) { |
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3123 st->print(" => "); |
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3124 vmentry->print_value_on(st); |
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3125 } |
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3126 } else if (this == SystemDictionary::MemberName_klass()) { |
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3127 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
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3128 if (vmtarget != NULL) { |
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3129 st->print(" = "); |
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3130 vmtarget->print_value_on(st); |
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3131 } else { |
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3132 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
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3133 st->print("."); |
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3134 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
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3135 } |
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3136 } |
0 | 3137 } |
3138 | |
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3139 const char* InstanceKlass::internal_name() const { |
0 | 3140 return external_name(); |
3141 } | |
3142 | |
7956 | 3143 #if INCLUDE_SERVICES |
3144 // Size Statistics | |
3145 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3146 Klass::collect_statistics(sz); | |
3147 | |
3148 sz->_inst_size = HeapWordSize * size_helper(); | |
3149 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3150 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3151 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3152 ((is_interface() || is_anonymous()) ? | |
3153 align_object_offset(nonstatic_oop_map_size()) : | |
3154 nonstatic_oop_map_size()); | |
3155 | |
3156 int n = 0; | |
3157 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3158 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3159 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3160 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3161 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3162 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3163 sz->_ro_bytes += n; | |
3164 | |
3165 const ConstantPool* cp = constants(); | |
3166 if (cp) { | |
3167 cp->collect_statistics(sz); | |
3168 } | |
3169 | |
3170 const Annotations* anno = annotations(); | |
3171 if (anno) { | |
3172 anno->collect_statistics(sz); | |
3173 } | |
3174 | |
3175 const Array<Method*>* methods_array = methods(); | |
3176 if (methods()) { | |
3177 for (int i = 0; i < methods_array->length(); i++) { | |
3178 Method* method = methods_array->at(i); | |
3179 if (method) { | |
3180 sz->_method_count ++; | |
3181 method->collect_statistics(sz); | |
3182 } | |
3183 } | |
3184 } | |
3185 } | |
3186 #endif // INCLUDE_SERVICES | |
3187 | |
0 | 3188 // Verification |
3189 | |
3190 class VerifyFieldClosure: public OopClosure { | |
113
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3191 protected: |
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3192 template <class T> void do_oop_work(T* p) { |
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3193 oop obj = oopDesc::load_decode_heap_oop(p); |
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3194 if (!obj->is_oop_or_null()) { |
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3195 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3196 Universe::print(); |
3197 guarantee(false, "boom"); | |
3198 } | |
3199 } | |
113
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3200 public: |
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3201 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3202 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3203 }; |
3204 | |
14909 | 3205 void InstanceKlass::verify_on(outputStream* st, bool check_dictionary) { |
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3206 #ifndef PRODUCT |
11034 | 3207 // Avoid redundant verifies, this really should be in product. |
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3208 if (_verify_count == Universe::verify_count()) return; |
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3209 _verify_count = Universe::verify_count(); |
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3210 #endif |
11034 | 3211 |
3212 // Verify Klass | |
14909 | 3213 Klass::verify_on(st, check_dictionary); |
3214 | |
3215 // Verify that klass is present in SystemDictionary if not already | |
3216 // verifying the SystemDictionary. | |
3217 if (is_loaded() && !is_anonymous() && check_dictionary) { | |
3218 Symbol* h_name = name(); | |
3219 SystemDictionary::verify_obj_klass_present(h_name, class_loader_data()); | |
3220 } | |
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3221 |
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3222 // Verify vtables |
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3223 if (is_linked()) { |
11034 | 3224 ResourceMark rm; |
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3225 // $$$ This used to be done only for m/s collections. Doing it |
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3226 // always seemed a valid generalization. (DLD -- 6/00) |
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3227 vtable()->verify(st); |
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3228 } |
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3229 |
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3230 // Verify first subklass |
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3231 if (subklass_oop() != NULL) { |
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3232 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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3233 } |
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3234 |
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3235 // Verify siblings |
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3236 Klass* super = this->super(); |
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3237 Klass* sib = next_sibling(); |
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3238 if (sib != NULL) { |
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3239 if (sib == this) { |
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3240 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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3241 } |
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3242 |
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3243 guarantee(sib->is_klass(), "should be klass"); |
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3244 guarantee(sib->super() == super, "siblings should have same superklass"); |
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3245 } |
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3246 |
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3247 // Verify implementor fields |
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3248 Klass* im = implementor(); |
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3249 if (im != NULL) { |
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3250 guarantee(is_interface(), "only interfaces should have implementor set"); |
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3251 guarantee(im->is_klass(), "should be klass"); |
6983 | 3252 guarantee(!im->is_interface() || im == this, |
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3253 "implementors cannot be interfaces"); |
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3254 } |
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3255 |
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3256 // Verify local interfaces |
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3257 if (local_interfaces()) { |
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3258 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3259 for (int j = 0; j < local_interfaces->length(); j++) { |
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3260 Klass* e = local_interfaces->at(j); |
6983 | 3261 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
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3262 } |
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3263 } |
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3264 |
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3265 // Verify transitive interfaces |
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3266 if (transitive_interfaces() != NULL) { |
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3267 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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3268 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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3269 Klass* e = transitive_interfaces->at(j); |
6983 | 3270 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
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3271 } |
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3272 } |
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3273 |
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3274 // Verify methods |
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3275 if (methods() != NULL) { |
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3276 Array<Method*>* methods = this->methods(); |
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3277 for (int j = 0; j < methods->length(); j++) { |
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3278 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
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3279 } |
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3280 for (int j = 0; j < methods->length() - 1; j++) { |
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3281 Method* m1 = methods->at(j); |
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3282 Method* m2 = methods->at(j + 1); |
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3283 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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3284 } |
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3285 } |
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3286 |
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3287 // Verify method ordering |
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3288 if (method_ordering() != NULL) { |
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3289 Array<int>* method_ordering = this->method_ordering(); |
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3290 int length = method_ordering->length(); |
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3291 if (JvmtiExport::can_maintain_original_method_order() || |
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|
3292 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
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3293 guarantee(length == methods()->length(), "invalid method ordering length"); |
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3294 jlong sum = 0; |
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3295 for (int j = 0; j < length; j++) { |
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3296 int original_index = method_ordering->at(j); |
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3297 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3298 guarantee(original_index < length, "invalid method ordering index"); |
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3299 sum += original_index; |
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|
3300 } |
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|
3301 // Verify sum of indices 0,1,...,length-1 |
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3302 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3303 } else { |
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|
3304 guarantee(length == 0, "invalid method ordering length"); |
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|
3305 } |
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|
3306 } |
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|
3307 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3308 // Verify default methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3309 if (default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3310 Array<Method*>* methods = this->default_methods(); |
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8009130: Lambda: Fix access controls, loader constraints.
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|
3311 for (int j = 0; j < methods->length(); j++) { |
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parents:
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|
3312 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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|
3313 } |
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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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|
3314 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
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|
3315 Method* m1 = methods->at(j); |
ac9cb1d5a202
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acorn
parents:
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diff
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|
3316 Method* m2 = methods->at(j + 1); |
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parents:
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|
3317 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3318 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3319 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
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|
3320 |
6725
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|
3321 // Verify JNI static field identifiers |
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|
3322 if (jni_ids() != NULL) { |
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3323 jni_ids()->verify(this); |
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|
3324 } |
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|
3325 |
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3326 // Verify other fields |
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|
3327 if (array_klasses() != NULL) { |
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|
3328 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3329 } |
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|
3330 if (constants() != NULL) { |
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|
3331 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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|
3332 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3333 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3334 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3335 guarantee(host->is_klass(), "should be klass"); |
6725
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|
3336 } |
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|
3337 } |
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|
3338 |
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|
3339 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3340 Klass::oop_verify_on(obj, st); |
3341 VerifyFieldClosure blk; | |
6725
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3342 obj->oop_iterate_no_header(&blk); |
0 | 3343 } |
3344 | |
6725
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3345 |
113
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diff
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|
3346 // JNIid class for jfieldIDs only |
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|
3347 // Note to reviewers: |
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3348 // These JNI functions are just moved over to column 1 and not changed |
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|
3349 // in the compressed oops workspace. |
6725
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3350 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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|
3351 _holder = holder; |
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|
3352 _offset = offset; |
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diff
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|
3353 _next = next; |
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diff
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|
3354 debug_only(_is_static_field_id = false;) |
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diff
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|
3355 } |
0 | 3356 |
3357 | |
113
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diff
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|
3358 JNIid* JNIid::find(int offset) { |
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diff
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|
3359 JNIid* current = this; |
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diff
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|
3360 while (current != NULL) { |
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diff
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|
3361 if (current->offset() == offset) return current; |
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diff
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|
3362 current = current->next(); |
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52
diff
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|
3363 } |
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52
diff
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|
3364 return NULL; |
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diff
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|
3365 } |
0 | 3366 |
3367 void JNIid::deallocate(JNIid* current) { | |
113
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diff
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|
3368 while (current != NULL) { |
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diff
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|
3369 JNIid* next = current->next(); |
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52
diff
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|
3370 delete current; |
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diff
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|
3371 current = next; |
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diff
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|
3372 } |
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52
diff
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|
3373 } |
0 | 3374 |
3375 | |
6725
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|
3376 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3377 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
ba764ed4b6f2
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diff
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|
3378 int end_field_offset; |
6725
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|
3379 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3380 |
113
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diff
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|
3381 JNIid* current = this; |
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diff
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|
3382 while (current != NULL) { |
ba764ed4b6f2
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52
diff
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|
3383 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
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coleenp
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52
diff
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|
3384 #ifdef ASSERT |
ba764ed4b6f2
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coleenp
parents:
52
diff
changeset
|
3385 int o = current->offset(); |
ba764ed4b6f2
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diff
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|
3386 if (current->is_static_field_id()) { |
ba764ed4b6f2
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coleenp
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diff
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|
3387 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
ba764ed4b6f2
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52
diff
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|
3388 } |
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coleenp
parents:
52
diff
changeset
|
3389 #endif |
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coleenp
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52
diff
changeset
|
3390 current = current->next(); |
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coleenp
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52
diff
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|
3391 } |
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52
diff
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|
3392 } |
0 | 3393 |
3394 | |
3395 #ifdef ASSERT | |
6725
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|
3396 void InstanceKlass::set_init_state(ClassState state) { |
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|
3397 bool good_state = is_shared() ? (_init_state <= state) |
113
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|
3398 : (_init_state < state); |
ba764ed4b6f2
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diff
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|
3399 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
parents:
4006
diff
changeset
|
3400 _init_state = (u1)state; |
113
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|
3401 } |
0 | 3402 #endif |
3403 | |
3404 | |
3405 // RedefineClasses() support for previous versions: | |
3406 | |
6725
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|
3407 // Purge previous versions |
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|
3408 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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|
3409 if (ik->previous_versions() != NULL) { |
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|
3410 // This klass has previous versions so see what we can cleanup |
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|
3411 // while it is safe to do so. |
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|
3412 |
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|
3413 int deleted_count = 0; // leave debugging breadcrumbs |
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|
3414 int live_count = 0; |
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|
3415 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3416 ClassLoaderData::the_null_class_loader_data() : |
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|
3417 ik->class_loader_data(); |
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|
3418 |
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|
3419 // RC_TRACE macro has an embedded ResourceMark |
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|
3420 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3421 ik->external_name(), ik->previous_versions()->length())); |
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|
3422 |
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|
3423 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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|
3424 // check the previous versions array |
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|
3425 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3426 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3427 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3428 |
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|
3429 ConstantPool* pvcp = cp_ref; |
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|
3430 if (!pvcp->on_stack()) { |
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|
3431 // If the constant pool isn't on stack, none of the methods |
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|
3432 // are executing. Delete all the methods, the constant pool and |
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diff
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|
3433 // and this previous version node. |
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|
3434 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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changeset
|
3435 if (method_refs != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3436 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3437 Method* method = method_refs->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3438 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3439 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3440 // method will be freed with associated class. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3441 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3442 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3443 // Remove the constant pool |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3444 delete pv_node; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3445 // Since we are traversing the array backwards, we don't have to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3446 // do anything special with the index. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3447 ik->previous_versions()->remove_at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3448 deleted_count++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3449 continue; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3450 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3451 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3452 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3453 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3454 live_count++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3455 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3456 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3457 // At least one method is live in this previous version, clean out |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3458 // the others or mark them as obsolete. |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3459 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3460 if (method_refs != NULL) { |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3461 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3462 method_refs->length())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3463 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3464 Method* method = method_refs->at(j); |
da91efe96a93
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coleenp
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diff
changeset
|
3465 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3466 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3467 // Remove the emcp method if it's not executing |
da91efe96a93
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coleenp
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diff
changeset
|
3468 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3469 // method, mark it as obsolete but leave it to clean up later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3470 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3471 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3472 } else if (emcp_method_count == 0) { |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3473 method->set_is_obsolete(); |
da91efe96a93
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parents:
6266
diff
changeset
|
3474 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3475 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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coleenp
parents:
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diff
changeset
|
3476 RC_TRACE(0x00000200, |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3477 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3478 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3479 method->signature()->as_C_string(), j, i)); |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3480 if (method->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3481 // Clean out any weak method links |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3482 method->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3483 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3484 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3485 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3486 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3487 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3488 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3489 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3490 ("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
|
3491 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3492 } |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3493 |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3494 Array<Method*>* methods = ik->methods(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3495 int num_methods = methods->length(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3496 for (int index2 = 0; index2 < num_methods; ++index2) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3497 if (methods->at(index2)->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3498 methods->at(index2)->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3499 } |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3500 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3501 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3502 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3503 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3504 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3505 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3506 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3507 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3508 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3509 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3510 // Potentially add an information node that contains pointers to the |
0 | 3511 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3512 // 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
|
3513 // 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
|
3514 // 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
|
3515 // 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
|
3516 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3517 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
|
3518 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3519 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
|
3520 "only VMThread can add previous versions"); |
0 | 3521 |
3522 if (_previous_versions == NULL) { | |
3523 // This is the first previous version so make some space. | |
3524 // Start with 2 elements under the assumption that the class | |
3525 // won't be redefined much. | |
6197 | 3526 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3527 GrowableArray<PreviousVersionNode *>(2, true); |
3528 } | |
3529 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3530 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3531 |
0 | 3532 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3533 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
|
3534 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3535 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
|
3536 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3537 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3538 // If 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
|
3539 // 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
|
3540 // 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
|
3541 // 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
|
3542 // 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
|
3543 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3544 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3545 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3546 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3547 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3548 // 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
|
3549 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
|
3550 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3551 ("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
|
3552 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3553 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3554 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
|
3555 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3556 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
|
3557 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3558 // 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
|
3559 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
|
3560 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3561 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3562 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3563 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3564 // no more EMCP methods so bail out now |
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8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
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|
3565 break; |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3566 } |
0 | 3567 } |
3568 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3569 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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|
3570 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3571 } |
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|
3572 // append new previous version. |
12281
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coleenp
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|
3573 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3574 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3575 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3576 // Since the caller is the VMThread and we are at a safepoint, this |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3577 // is a good time to clear out unused references. |
0 | 3578 |
3579 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3580 _previous_versions->length())); | |
3581 | |
6725
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|
3582 // Purge previous versions not executing on the stack |
da91efe96a93
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|
3583 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3584 |
3585 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3586 | |
3587 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3588 _previous_versions->length() > 0) { |
da91efe96a93
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|
3589 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3590 // clear out any matching EMCP method entries the hard way. |
3591 int local_count = 0; | |
3592 for (int i = 0; i < old_methods->length(); i++) { | |
3593 if (!emcp_methods->at(i)) { | |
3594 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3595 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3596 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
changeset
|
3597 Symbol* m_signature = old_method->signature(); |
0 | 3598 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3599 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3600 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3601 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3602 PreviousVersionNode * pv_node = _previous_versions->at(j); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3603 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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3604 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3605 if (method_refs == NULL) { |
3606 // We have run into a PreviousVersion generation where | |
3607 // all methods were made obsolete during that generation's | |
3608 // RedefineClasses() operation. At the time of that | |
3609 // operation, all EMCP methods were flushed so we don't | |
3610 // have to go back any further. | |
3611 // | |
3612 // A NULL method_refs is different than an empty method_refs. | |
3613 // We cannot infer any optimizations about older generations | |
3614 // from an empty method_refs for the current generation. | |
3615 break; | |
3616 } | |
3617 | |
3618 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3619 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3620 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3621 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3622 method->name() == m_name && |
0 | 3623 method->signature() == m_signature) { |
3624 // The current RedefineClasses() call has made all EMCP | |
3625 // versions of this method obsolete so mark it as obsolete | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3626 // and remove the reference. |
0 | 3627 RC_TRACE(0x00000400, |
3628 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3629 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3630 | |
3631 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3632 // Leave obsolete methods on the previous version list to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3633 // clean up later. |
0 | 3634 break; |
3635 } | |
3636 } | |
3637 | |
3638 // The previous loop may not find a matching EMCP method, but | |
3639 // that doesn't mean that we can optimize and not go any | |
3640 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3641 // method for this generation could have already been deleted, |
0 | 3642 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3643 // been deleted. |
0 | 3644 } |
3645 | |
3646 if (++local_count >= obsolete_method_count) { | |
3647 // no more obsolete methods so bail out now | |
3648 break; | |
3649 } | |
3650 } | |
3651 } | |
3652 } | |
3653 } // end add_previous_version() | |
3654 | |
3655 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3656 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3657 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3658 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3659 } // end has_previous_version() |
3660 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3661 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3662 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3663 Method* m = NULL; |
0 | 3664 if (idnum < methods()->length()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3665 m = methods()->at(idnum); |
0 | 3666 } |
3667 if (m == NULL || m->method_idnum() != idnum) { | |
3668 for (int index = 0; index < methods()->length(); ++index) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3669 m = methods()->at(index); |
0 | 3670 if (m->method_idnum() == idnum) { |
3671 return m; | |
3672 } | |
3673 } | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3674 // None found, return null for the caller to handle. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3675 return NULL; |
0 | 3676 } |
3677 return m; | |
3678 } | |
3679 | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3680 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3681 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3682 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3683 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3684 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3685 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3686 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3687 |
0 | 3688 |
3689 // Construct a PreviousVersionNode entry for the array hung off | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
3690 // the InstanceKlass. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3691 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
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|
3692 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3693 |
3694 _prev_constant_pool = prev_constant_pool; | |
3695 _prev_EMCP_methods = prev_EMCP_methods; | |
3696 } | |
3697 | |
3698 | |
3699 // Destroy a PreviousVersionNode | |
3700 PreviousVersionNode::~PreviousVersionNode() { | |
3701 if (_prev_constant_pool != NULL) { | |
6725
da91efe96a93
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6266
diff
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|
3702 _prev_constant_pool = NULL; |
0 | 3703 } |
3704 | |
3705 if (_prev_EMCP_methods != NULL) { | |
3706 delete _prev_EMCP_methods; | |
3707 } | |
3708 } | |
3709 | |
3710 // Construct a helper for walking the previous versions array | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
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|
3711 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3712 _thread = thread; |
0 | 3713 _previous_versions = ik->previous_versions(); |
3714 _current_index = 0; | |
3715 _current_p = NULL; | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3716 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3717 } |
3718 | |
3719 | |
3720 // Return the interesting information for the next previous version | |
3721 // of the klass. Returns NULL if there are no more previous versions. | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3722 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3723 if (_previous_versions == NULL) { |
3724 // no previous versions so nothing to return | |
3725 return NULL; | |
3726 } | |
3727 | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3728 _current_p = NULL; // reset to NULL |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3729 _current_constant_pool_handle = NULL; |
0 | 3730 |
3731 int length = _previous_versions->length(); | |
3732 | |
3733 while (_current_index < length) { | |
3734 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3735 |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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diff
changeset
|
3736 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3737 // which keeps all the methods from being deallocated. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3738 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3739 _current_p = pv_node; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3740 return pv_node; |
0 | 3741 } |
3742 | |
3743 return NULL; | |
3744 } // end next_previous_version() |