Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.cpp @ 20690:d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
Reviewed-by: sla, zgu
author | igerasim |
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date | Fri, 28 Feb 2014 16:00:40 +0400 |
parents | 90257dfad6e3 |
children | 0fa1f71a905b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileParser.hpp" | |
27 #include "classfile/classLoader.hpp" | |
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28 #include "classfile/classLoaderData.hpp" |
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29 #include "classfile/classLoaderData.inline.hpp" |
6934 | 30 #include "classfile/defaultMethods.hpp" |
1972 | 31 #include "classfile/javaClasses.hpp" |
32 #include "classfile/symbolTable.hpp" | |
33 #include "classfile/systemDictionary.hpp" | |
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34 #if INCLUDE_CDS |
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35 #include "classfile/systemDictionaryShared.hpp" |
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36 #endif |
1972 | 37 #include "classfile/verificationType.hpp" |
38 #include "classfile/verifier.hpp" | |
39 #include "classfile/vmSymbols.hpp" | |
40 #include "memory/allocation.hpp" | |
41 #include "memory/gcLocker.hpp" | |
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42 #include "memory/metadataFactory.hpp" |
1972 | 43 #include "memory/oopFactory.hpp" |
10405 | 44 #include "memory/referenceType.hpp" |
1972 | 45 #include "memory/universe.inline.hpp" |
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46 #include "oops/constantPool.hpp" |
3938 | 47 #include "oops/fieldStreams.hpp" |
1972 | 48 #include "oops/instanceKlass.hpp" |
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49 #include "oops/instanceMirrorKlass.hpp" |
1972 | 50 #include "oops/klass.inline.hpp" |
51 #include "oops/klassVtable.hpp" | |
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52 #include "oops/method.hpp" |
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53 #include "oops/symbol.hpp" |
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54 #include "prims/jvm.h" |
1972 | 55 #include "prims/jvmtiExport.hpp" |
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56 #include "prims/jvmtiThreadState.hpp" |
1972 | 57 #include "runtime/javaCalls.hpp" |
58 #include "runtime/perfData.hpp" | |
59 #include "runtime/reflection.hpp" | |
60 #include "runtime/signature.hpp" | |
61 #include "runtime/timer.hpp" | |
62 #include "services/classLoadingService.hpp" | |
63 #include "services/threadService.hpp" | |
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64 #include "utilities/array.hpp" |
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65 #include "utilities/globalDefinitions.hpp" |
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66 #include "utilities/ostream.hpp" |
0 | 67 |
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68 // We generally try to create the oops directly when parsing, rather than |
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69 // allocating temporary data structures and copying the bytes twice. A |
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70 // temporary area is only needed when parsing utf8 entries in the constant |
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71 // pool and when parsing line number tables. |
0 | 72 |
73 // We add assert in debug mode when class format is not checked. | |
74 | |
75 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
76 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
6868 | 77 #define JAVA_MAX_SUPPORTED_VERSION 52 |
0 | 78 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
79 | |
80 // Used for two backward compatibility reasons: | |
81 // - to check for new additions to the class file format in JDK1.5 | |
82 // - to check for bug fixes in the format checker in JDK1.5 | |
83 #define JAVA_1_5_VERSION 49 | |
84 | |
85 // Used for backward compatibility reasons: | |
86 // - to check for javac bug fixes that happened after 1.5 | |
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87 // - also used as the max version when running in jdk6 |
0 | 88 #define JAVA_6_VERSION 50 |
89 | |
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90 // Used for backward compatibility reasons: |
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91 // - to check NameAndType_info signatures more aggressively |
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92 #define JAVA_7_VERSION 51 |
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93 |
6934 | 94 // Extension method support. |
95 #define JAVA_8_VERSION 52 | |
96 | |
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97 void ClassFileParser::parse_constant_pool_entries(int length, TRAPS) { |
0 | 98 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
99 // this function (_current can be allocated in a register, with scalar | |
100 // replacement of aggregates). The _current pointer is copied back to | |
101 // stream() when this function returns. DON'T call another method within | |
102 // this method that uses stream(). | |
103 ClassFileStream* cfs0 = stream(); | |
104 ClassFileStream cfs1 = *cfs0; | |
105 ClassFileStream* cfs = &cfs1; | |
106 #ifdef ASSERT | |
1685 | 107 assert(cfs->allocated_on_stack(),"should be local"); |
0 | 108 u1* old_current = cfs0->current(); |
109 #endif | |
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110 Handle class_loader(THREAD, _loader_data->class_loader()); |
0 | 111 |
112 // Used for batching symbol allocations. | |
113 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
114 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
115 int indices[SymbolTable::symbol_alloc_batch_size]; | |
116 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
117 int names_count = 0; | |
118 | |
119 // parsing Index 0 is unused | |
120 for (int index = 1; index < length; index++) { | |
121 // Each of the following case guarantees one more byte in the stream | |
122 // for the following tag or the access_flags following constant pool, | |
123 // so we don't need bounds-check for reading tag. | |
124 u1 tag = cfs->get_u1_fast(); | |
125 switch (tag) { | |
126 case JVM_CONSTANT_Class : | |
127 { | |
128 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
129 u2 name_index = cfs->get_u2_fast(); | |
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130 _cp->klass_index_at_put(index, name_index); |
0 | 131 } |
132 break; | |
133 case JVM_CONSTANT_Fieldref : | |
134 { | |
135 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
136 u2 class_index = cfs->get_u2_fast(); | |
137 u2 name_and_type_index = cfs->get_u2_fast(); | |
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138 _cp->field_at_put(index, class_index, name_and_type_index); |
0 | 139 } |
140 break; | |
141 case JVM_CONSTANT_Methodref : | |
142 { | |
143 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
144 u2 class_index = cfs->get_u2_fast(); | |
145 u2 name_and_type_index = cfs->get_u2_fast(); | |
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146 _cp->method_at_put(index, class_index, name_and_type_index); |
0 | 147 } |
148 break; | |
149 case JVM_CONSTANT_InterfaceMethodref : | |
150 { | |
151 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
152 u2 class_index = cfs->get_u2_fast(); | |
153 u2 name_and_type_index = cfs->get_u2_fast(); | |
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154 _cp->interface_method_at_put(index, class_index, name_and_type_index); |
0 | 155 } |
156 break; | |
157 case JVM_CONSTANT_String : | |
158 { | |
159 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
160 u2 string_index = cfs->get_u2_fast(); | |
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161 _cp->string_index_at_put(index, string_index); |
0 | 162 } |
163 break; | |
1602 | 164 case JVM_CONSTANT_MethodHandle : |
165 case JVM_CONSTANT_MethodType : | |
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166 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
1602 | 167 classfile_parse_error( |
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168 "Class file version does not support constant tag %u in class file %s", |
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169 tag, CHECK); |
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170 } |
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171 if (!EnableInvokeDynamic) { |
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172 classfile_parse_error( |
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173 "This JVM does not support constant tag %u in class file %s", |
1602 | 174 tag, CHECK); |
175 } | |
176 if (tag == JVM_CONSTANT_MethodHandle) { | |
177 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
178 u1 ref_kind = cfs->get_u1_fast(); | |
179 u2 method_index = cfs->get_u2_fast(); | |
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180 _cp->method_handle_index_at_put(index, ref_kind, method_index); |
1602 | 181 } else if (tag == JVM_CONSTANT_MethodType) { |
182 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
183 u2 signature_index = cfs->get_u2_fast(); | |
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184 _cp->method_type_index_at_put(index, signature_index); |
1602 | 185 } else { |
186 ShouldNotReachHere(); | |
187 } | |
188 break; | |
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189 case JVM_CONSTANT_InvokeDynamic : |
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190 { |
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191 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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192 classfile_parse_error( |
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193 "Class file version does not support constant tag %u in class file %s", |
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194 tag, CHECK); |
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195 } |
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196 if (!EnableInvokeDynamic) { |
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197 classfile_parse_error( |
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198 "This JVM does not support constant tag %u in class file %s", |
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199 tag, CHECK); |
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200 } |
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201 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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202 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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203 u2 name_and_type_index = cfs->get_u2_fast(); |
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204 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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205 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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206 _cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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207 } |
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208 break; |
0 | 209 case JVM_CONSTANT_Integer : |
210 { | |
211 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
212 u4 bytes = cfs->get_u4_fast(); | |
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213 _cp->int_at_put(index, (jint) bytes); |
0 | 214 } |
215 break; | |
216 case JVM_CONSTANT_Float : | |
217 { | |
218 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
219 u4 bytes = cfs->get_u4_fast(); | |
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220 _cp->float_at_put(index, *(jfloat*)&bytes); |
0 | 221 } |
222 break; | |
223 case JVM_CONSTANT_Long : | |
224 // A mangled type might cause you to overrun allocated memory | |
225 guarantee_property(index+1 < length, | |
226 "Invalid constant pool entry %u in class file %s", | |
227 index, CHECK); | |
228 { | |
229 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
230 u8 bytes = cfs->get_u8_fast(); | |
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231 _cp->long_at_put(index, bytes); |
0 | 232 } |
233 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
234 break; | |
235 case JVM_CONSTANT_Double : | |
236 // A mangled type might cause you to overrun allocated memory | |
237 guarantee_property(index+1 < length, | |
238 "Invalid constant pool entry %u in class file %s", | |
239 index, CHECK); | |
240 { | |
241 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
242 u8 bytes = cfs->get_u8_fast(); | |
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243 _cp->double_at_put(index, *(jdouble*)&bytes); |
0 | 244 } |
245 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
246 break; | |
247 case JVM_CONSTANT_NameAndType : | |
248 { | |
249 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
250 u2 name_index = cfs->get_u2_fast(); | |
251 u2 signature_index = cfs->get_u2_fast(); | |
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252 _cp->name_and_type_at_put(index, name_index, signature_index); |
0 | 253 } |
254 break; | |
255 case JVM_CONSTANT_Utf8 : | |
256 { | |
257 cfs->guarantee_more(2, CHECK); // utf8_length | |
258 u2 utf8_length = cfs->get_u2_fast(); | |
259 u1* utf8_buffer = cfs->get_u1_buffer(); | |
260 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
261 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
262 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
263 cfs->skip_u1_fast(utf8_length); | |
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264 |
0 | 265 // Before storing the symbol, make sure it's legal |
266 if (_need_verify) { | |
267 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
268 } | |
269 | |
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270 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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271 Handle patch = clear_cp_patch_at(index); |
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272 guarantee_property(java_lang_String::is_instance(patch()), |
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273 "Illegal utf8 patch at %d in class file %s", |
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274 index, CHECK); |
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275 char* str = java_lang_String::as_utf8_string(patch()); |
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276 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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277 utf8_buffer = (u1*) str; |
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278 utf8_length = (int) strlen(str); |
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279 } |
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280 |
0 | 281 unsigned int hash; |
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282 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
0 | 283 if (result == NULL) { |
284 names[names_count] = (char*)utf8_buffer; | |
285 lengths[names_count] = utf8_length; | |
286 indices[names_count] = index; | |
287 hashValues[names_count++] = hash; | |
288 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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289 SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 290 names_count = 0; |
291 } | |
292 } else { | |
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293 _cp->symbol_at_put(index, result); |
0 | 294 } |
295 } | |
296 break; | |
297 default: | |
298 classfile_parse_error( | |
299 "Unknown constant tag %u in class file %s", tag, CHECK); | |
300 break; | |
301 } | |
302 } | |
303 | |
304 // Allocate the remaining symbols | |
305 if (names_count > 0) { | |
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306 SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 307 } |
308 | |
309 // Copy _current pointer of local copy back to stream(). | |
310 #ifdef ASSERT | |
311 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
312 #endif | |
313 cfs0->set_current(cfs1.current()); | |
314 } | |
315 | |
316 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } | |
317 | |
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318 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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319 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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320 return cp->symbol_at(index); |
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321 else |
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322 return NULL; |
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323 } |
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324 |
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325 constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) { |
0 | 326 ClassFileStream* cfs = stream(); |
327 constantPoolHandle nullHandle; | |
328 | |
329 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
330 u2 length = cfs->get_u2_fast(); | |
331 guarantee_property( | |
332 length >= 1, "Illegal constant pool size %u in class file %s", | |
333 length, CHECK_(nullHandle)); | |
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334 ConstantPool* constant_pool = ConstantPool::allocate(_loader_data, length, |
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335 CHECK_(nullHandle)); |
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336 _cp = constant_pool; // save in case of errors |
0 | 337 constantPoolHandle cp (THREAD, constant_pool); |
338 | |
339 // parsing constant pool entries | |
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340 parse_constant_pool_entries(length, CHECK_(nullHandle)); |
0 | 341 |
342 int index = 1; // declared outside of loops for portability | |
343 | |
344 // first verification pass - validate cross references and fixup class and string constants | |
345 for (index = 1; index < length; index++) { // Index 0 is unused | |
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346 jbyte tag = cp->tag_at(index).value(); |
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347 switch (tag) { |
0 | 348 case JVM_CONSTANT_Class : |
349 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
350 break; | |
351 case JVM_CONSTANT_Fieldref : | |
352 // fall through | |
353 case JVM_CONSTANT_Methodref : | |
354 // fall through | |
355 case JVM_CONSTANT_InterfaceMethodref : { | |
356 if (!_need_verify) break; | |
357 int klass_ref_index = cp->klass_ref_index_at(index); | |
358 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
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359 check_property(valid_klass_reference_at(klass_ref_index), |
0 | 360 "Invalid constant pool index %u in class file %s", |
361 klass_ref_index, | |
362 CHECK_(nullHandle)); | |
363 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
364 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
365 "Invalid constant pool index %u in class file %s", | |
366 name_and_type_ref_index, | |
367 CHECK_(nullHandle)); | |
368 break; | |
369 } | |
370 case JVM_CONSTANT_String : | |
371 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
372 break; | |
373 case JVM_CONSTANT_Integer : | |
374 break; | |
375 case JVM_CONSTANT_Float : | |
376 break; | |
377 case JVM_CONSTANT_Long : | |
378 case JVM_CONSTANT_Double : | |
379 index++; | |
380 check_property( | |
381 (index < length && cp->tag_at(index).is_invalid()), | |
382 "Improper constant pool long/double index %u in class file %s", | |
383 index, CHECK_(nullHandle)); | |
384 break; | |
385 case JVM_CONSTANT_NameAndType : { | |
386 if (!_need_verify) break; | |
387 int name_ref_index = cp->name_ref_index_at(index); | |
388 int signature_ref_index = cp->signature_ref_index_at(index); | |
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389 check_property(valid_symbol_at(name_ref_index), |
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390 "Invalid constant pool index %u in class file %s", |
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391 name_ref_index, CHECK_(nullHandle)); |
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392 check_property(valid_symbol_at(signature_ref_index), |
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393 "Invalid constant pool index %u in class file %s", |
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394 signature_ref_index, CHECK_(nullHandle)); |
0 | 395 break; |
396 } | |
397 case JVM_CONSTANT_Utf8 : | |
398 break; | |
399 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
400 case JVM_CONSTANT_UnresolvedClassInError: | |
401 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
402 break; | |
403 case JVM_CONSTANT_ClassIndex : | |
404 { | |
405 int class_index = cp->klass_index_at(index); | |
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406 check_property(valid_symbol_at(class_index), |
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407 "Invalid constant pool index %u in class file %s", |
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408 class_index, CHECK_(nullHandle)); |
0 | 409 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); |
410 } | |
411 break; | |
412 case JVM_CONSTANT_StringIndex : | |
413 { | |
414 int string_index = cp->string_index_at(index); | |
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415 check_property(valid_symbol_at(string_index), |
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416 "Invalid constant pool index %u in class file %s", |
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417 string_index, CHECK_(nullHandle)); |
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418 Symbol* sym = cp->symbol_at(string_index); |
0 | 419 cp->unresolved_string_at_put(index, sym); |
420 } | |
421 break; | |
1602 | 422 case JVM_CONSTANT_MethodHandle : |
423 { | |
424 int ref_index = cp->method_handle_index_at(index); | |
425 check_property( | |
426 valid_cp_range(ref_index, length) && | |
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427 EnableInvokeDynamic, |
1602 | 428 "Invalid constant pool index %u in class file %s", |
429 ref_index, CHECK_(nullHandle)); | |
430 constantTag tag = cp->tag_at(ref_index); | |
431 int ref_kind = cp->method_handle_ref_kind_at(index); | |
432 switch (ref_kind) { | |
433 case JVM_REF_getField: | |
434 case JVM_REF_getStatic: | |
435 case JVM_REF_putField: | |
436 case JVM_REF_putStatic: | |
437 check_property( | |
438 tag.is_field(), | |
439 "Invalid constant pool index %u in class file %s (not a field)", | |
440 ref_index, CHECK_(nullHandle)); | |
441 break; | |
442 case JVM_REF_invokeVirtual: | |
443 case JVM_REF_newInvokeSpecial: | |
444 check_property( | |
445 tag.is_method(), | |
446 "Invalid constant pool index %u in class file %s (not a method)", | |
447 ref_index, CHECK_(nullHandle)); | |
448 break; | |
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449 case JVM_REF_invokeStatic: |
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450 case JVM_REF_invokeSpecial: |
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451 check_property(tag.is_method() || |
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452 ((_major_version >= JAVA_8_VERSION) && tag.is_interface_method()), |
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453 "Invalid constant pool index %u in class file %s (not a method)", |
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454 ref_index, CHECK_(nullHandle)); |
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455 break; |
1602 | 456 case JVM_REF_invokeInterface: |
457 check_property( | |
458 tag.is_interface_method(), | |
459 "Invalid constant pool index %u in class file %s (not an interface method)", | |
460 ref_index, CHECK_(nullHandle)); | |
461 break; | |
462 default: | |
463 classfile_parse_error( | |
464 "Bad method handle kind at constant pool index %u in class file %s", | |
465 index, CHECK_(nullHandle)); | |
466 } | |
467 // Keep the ref_index unchanged. It will be indirected at link-time. | |
468 } | |
469 break; | |
470 case JVM_CONSTANT_MethodType : | |
471 { | |
472 int ref_index = cp->method_type_index_at(index); | |
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473 check_property(valid_symbol_at(ref_index) && EnableInvokeDynamic, |
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474 "Invalid constant pool index %u in class file %s", |
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475 ref_index, CHECK_(nullHandle)); |
1602 | 476 } |
477 break; | |
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478 case JVM_CONSTANT_InvokeDynamic : |
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479 { |
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480 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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481 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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482 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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483 "Invalid constant pool index %u in class file %s", |
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484 name_and_type_ref_index, |
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485 CHECK_(nullHandle)); |
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486 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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487 break; |
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488 } |
0 | 489 default: |
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490 fatal(err_msg("bad constant pool tag value %u", |
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491 cp->tag_at(index).value())); |
0 | 492 ShouldNotReachHere(); |
493 break; | |
494 } // end of switch | |
495 } // end of for | |
496 | |
431
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497 if (_cp_patches != NULL) { |
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498 // need to treat this_class specially... |
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499 assert(EnableInvokeDynamic, ""); |
431
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500 int this_class_index; |
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501 { |
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502 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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503 u1* mark = cfs->current(); |
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504 u2 flags = cfs->get_u2_fast(); |
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505 this_class_index = cfs->get_u2_fast(); |
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506 cfs->set_current(mark); // revert to mark |
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507 } |
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508 |
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509 for (index = 1; index < length; index++) { // Index 0 is unused |
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510 if (has_cp_patch_at(index)) { |
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511 guarantee_property(index != this_class_index, |
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512 "Illegal constant pool patch to self at %d in class file %s", |
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513 index, CHECK_(nullHandle)); |
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514 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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515 } |
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516 } |
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517 } |
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518 |
0 | 519 if (!_need_verify) { |
520 return cp; | |
521 } | |
522 | |
523 // second verification pass - checks the strings are of the right format. | |
431
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524 // but not yet to the other entries |
0 | 525 for (index = 1; index < length; index++) { |
526 jbyte tag = cp->tag_at(index).value(); | |
527 switch (tag) { | |
528 case JVM_CONSTANT_UnresolvedClass: { | |
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529 Symbol* class_name = cp->unresolved_klass_at(index); |
431
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530 // check the name, even if _cp_patches will overwrite it |
0 | 531 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
532 break; | |
533 } | |
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534 case JVM_CONSTANT_NameAndType: { |
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535 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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536 int sig_index = cp->signature_ref_index_at(index); |
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537 int name_index = cp->name_ref_index_at(index); |
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538 Symbol* name = cp->symbol_at(name_index); |
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539 Symbol* sig = cp->symbol_at(sig_index); |
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540 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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541 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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542 } else { |
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543 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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544 } |
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545 } |
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546 break; |
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547 } |
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548 case JVM_CONSTANT_InvokeDynamic: |
0 | 549 case JVM_CONSTANT_Fieldref: |
550 case JVM_CONSTANT_Methodref: | |
551 case JVM_CONSTANT_InterfaceMethodref: { | |
552 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
553 // already verified to be utf8 | |
554 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
555 // already verified to be utf8 | |
556 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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557 Symbol* name = cp->symbol_at(name_ref_index); |
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558 Symbol* signature = cp->symbol_at(signature_ref_index); |
0 | 559 if (tag == JVM_CONSTANT_Fieldref) { |
560 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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561 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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562 // Signature is verified above, when iterating NameAndType_info. |
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563 // Need only to be sure it's the right type. |
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564 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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565 throwIllegalSignature( |
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566 "Field", name, signature, CHECK_(nullHandle)); |
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567 } |
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568 } else { |
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569 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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570 } |
0 | 571 } else { |
572 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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573 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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574 // Signature is verified above, when iterating NameAndType_info. |
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575 // Need only to be sure it's the right type. |
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576 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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577 throwIllegalSignature( |
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578 "Method", name, signature, CHECK_(nullHandle)); |
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579 } |
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580 } else { |
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581 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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582 } |
0 | 583 if (tag == JVM_CONSTANT_Methodref) { |
584 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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585 assert(name != NULL, "method name in constant pool is null"); |
0 | 586 unsigned int name_len = name->utf8_length(); |
587 assert(name_len > 0, "bad method name"); // already verified as legal name | |
588 if (name->byte_at(0) == '<') { | |
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589 if (name != vmSymbols::object_initializer_name()) { |
0 | 590 classfile_parse_error( |
591 "Bad method name at constant pool index %u in class file %s", | |
592 name_ref_index, CHECK_(nullHandle)); | |
593 } | |
594 } | |
595 } | |
596 } | |
597 break; | |
598 } | |
1602 | 599 case JVM_CONSTANT_MethodHandle: { |
600 int ref_index = cp->method_handle_index_at(index); | |
601 int ref_kind = cp->method_handle_ref_kind_at(index); | |
602 switch (ref_kind) { | |
603 case JVM_REF_invokeVirtual: | |
604 case JVM_REF_invokeStatic: | |
605 case JVM_REF_invokeSpecial: | |
606 case JVM_REF_newInvokeSpecial: | |
607 { | |
608 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
609 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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610 Symbol* name = cp->symbol_at(name_ref_index); |
1602 | 611 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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612 if (name != vmSymbols::object_initializer_name()) { |
1602 | 613 classfile_parse_error( |
614 "Bad constructor name at constant pool index %u in class file %s", | |
615 name_ref_index, CHECK_(nullHandle)); | |
616 } | |
617 } else { | |
2177
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618 if (name == vmSymbols::object_initializer_name()) { |
1602 | 619 classfile_parse_error( |
620 "Bad method name at constant pool index %u in class file %s", | |
621 name_ref_index, CHECK_(nullHandle)); | |
622 } | |
623 } | |
624 } | |
625 break; | |
626 // Other ref_kinds are already fully checked in previous pass. | |
627 } | |
628 break; | |
629 } | |
630 case JVM_CONSTANT_MethodType: { | |
2177
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631 Symbol* no_name = vmSymbols::type_name(); // place holder |
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632 Symbol* signature = cp->method_type_signature_at(index); |
1602 | 633 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
634 break; | |
635 } | |
2177
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636 case JVM_CONSTANT_Utf8: { |
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637 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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638 } |
0 | 639 } // end of switch |
640 } // end of for | |
641 | |
642 return cp; | |
643 } | |
644 | |
645 | |
431
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646 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
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647 assert(EnableInvokeDynamic, ""); |
431
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648 BasicType patch_type = T_VOID; |
6725
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649 |
431
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650 switch (cp->tag_at(index).value()) { |
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651 |
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652 case JVM_CONSTANT_UnresolvedClass : |
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653 // Patching a class means pre-resolving it. |
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654 // The name in the constant pool is ignored. |
1602 | 655 if (java_lang_Class::is_instance(patch())) { |
431
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656 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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657 "Illegal class patch at %d in class file %s", |
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658 index, CHECK); |
6725
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659 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
431
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660 } else { |
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661 guarantee_property(java_lang_String::is_instance(patch()), |
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662 "Illegal class patch at %d in class file %s", |
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663 index, CHECK); |
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664 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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665 cp->unresolved_klass_at_put(index, name); |
431
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666 } |
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667 break; |
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668 |
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669 case JVM_CONSTANT_String : |
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670 // skip this patch and don't clear it. Needs the oop array for resolved |
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671 // references to be created first. |
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672 return; |
431
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673 |
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674 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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675 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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676 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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677 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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678 patch_prim: |
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679 { |
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680 jvalue value; |
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681 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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682 guarantee_property(value_type == patch_type, |
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683 "Illegal primitive patch at %d in class file %s", |
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684 index, CHECK); |
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685 switch (value_type) { |
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686 case T_INT: cp->int_at_put(index, value.i); break; |
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687 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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688 case T_LONG: cp->long_at_put(index, value.j); break; |
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689 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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690 default: assert(false, ""); |
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691 } |
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692 } |
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693 break; |
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694 |
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695 default: |
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696 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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697 guarantee_property(!has_cp_patch_at(index), |
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698 "Illegal unexpected patch at %d in class file %s", |
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699 index, CHECK); |
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700 return; |
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701 } |
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702 |
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703 // On fall-through, mark the patch as used. |
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704 clear_cp_patch_at(index); |
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705 } |
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706 |
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707 |
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708 |
0 | 709 class NameSigHash: public ResourceObj { |
710 public: | |
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711 Symbol* _name; // name |
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712 Symbol* _sig; // signature |
0 | 713 NameSigHash* _next; // Next entry in hash table |
714 }; | |
715 | |
716 | |
717 #define HASH_ROW_SIZE 256 | |
718 | |
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719 unsigned int hash(Symbol* name, Symbol* sig) { |
0 | 720 unsigned int raw_hash = 0; |
721 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
722 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
723 | |
724 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
725 } | |
726 | |
727 | |
728 void initialize_hashtable(NameSigHash** table) { | |
729 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
730 } | |
731 | |
732 // Return false if the name/sig combination is found in table. | |
733 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
734 // The old format checker uses heap sort to find duplicates. | |
735 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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736 // of table since we don't expect Symbol*'s to move. |
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737 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
0 | 738 assert(name != NULL, "name in constant pool is NULL"); |
739 | |
740 // First lookup for duplicates | |
741 int index = hash(name, sig); | |
742 NameSigHash* entry = table[index]; | |
743 while (entry != NULL) { | |
744 if (entry->_name == name && entry->_sig == sig) { | |
745 return false; | |
746 } | |
747 entry = entry->_next; | |
748 } | |
749 | |
750 // No duplicate is found, allocate a new entry and fill it. | |
751 entry = new NameSigHash(); | |
752 entry->_name = name; | |
753 entry->_sig = sig; | |
754 | |
755 // Insert into hash table | |
756 entry->_next = table[index]; | |
757 table[index] = entry; | |
758 | |
759 return true; | |
760 } | |
761 | |
762 | |
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763 Array<Klass*>* ClassFileParser::parse_interfaces(int length, |
0 | 764 Handle protection_domain, |
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765 Symbol* class_name, |
6934 | 766 bool* has_default_methods, |
0 | 767 TRAPS) { |
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768 if (length == 0) { |
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769 _local_interfaces = Universe::the_empty_klass_array(); |
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770 } else { |
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771 ClassFileStream* cfs = stream(); |
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772 assert(length > 0, "only called for length>0"); |
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773 _local_interfaces = MetadataFactory::new_array<Klass*>(_loader_data, length, NULL, CHECK_NULL); |
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774 |
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775 int index; |
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776 for (index = 0; index < length; index++) { |
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777 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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778 KlassHandle interf; |
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779 check_property( |
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780 valid_klass_reference_at(interface_index), |
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781 "Interface name has bad constant pool index %u in class file %s", |
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782 interface_index, CHECK_NULL); |
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783 if (_cp->tag_at(interface_index).is_klass()) { |
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784 interf = KlassHandle(THREAD, _cp->resolved_klass_at(interface_index)); |
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785 } else { |
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786 Symbol* unresolved_klass = _cp->klass_name_at(interface_index); |
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787 |
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788 // Don't need to check legal name because it's checked when parsing constant pool. |
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789 // But need to make sure it's not an array type. |
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790 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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791 "Bad interface name in class file %s", CHECK_NULL); |
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792 Handle class_loader(THREAD, _loader_data->class_loader()); |
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793 |
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794 // Call resolve_super so classcircularity is checked |
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795 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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796 unresolved_klass, class_loader, protection_domain, |
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797 false, CHECK_NULL); |
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798 interf = KlassHandle(THREAD, k); |
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799 } |
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800 |
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801 if (!interf()->is_interface()) { |
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802 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
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803 } |
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804 if (InstanceKlass::cast(interf())->has_default_methods()) { |
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805 *has_default_methods = true; |
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806 } |
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807 _local_interfaces->at_put(index, interf()); |
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808 } |
0 | 809 |
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810 if (!_need_verify || length <= 1) { |
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811 return _local_interfaces; |
6934 | 812 } |
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813 |
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814 // Check if there's any duplicates in interfaces |
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815 ResourceMark rm(THREAD); |
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816 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( |
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817 THREAD, NameSigHash*, HASH_ROW_SIZE); |
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818 initialize_hashtable(interface_names); |
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819 bool dup = false; |
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820 { |
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821 debug_only(No_Safepoint_Verifier nsv;) |
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822 for (index = 0; index < length; index++) { |
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823 Klass* k = _local_interfaces->at(index); |
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824 Symbol* name = InstanceKlass::cast(k)->name(); |
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825 // If no duplicates, add (name, NULL) in hashtable interface_names. |
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826 if (!put_after_lookup(name, NULL, interface_names)) { |
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827 dup = true; |
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828 break; |
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829 } |
0 | 830 } |
831 } | |
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832 if (dup) { |
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833 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
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834 } |
0 | 835 } |
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836 return _local_interfaces; |
0 | 837 } |
838 | |
839 | |
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840 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, TRAPS) { |
0 | 841 // Make sure the constant pool entry is of a type appropriate to this field |
842 guarantee_property( | |
843 (constantvalue_index > 0 && | |
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844 constantvalue_index < _cp->length()), |
0 | 845 "Bad initial value index %u in ConstantValue attribute in class file %s", |
846 constantvalue_index, CHECK); | |
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847 constantTag value_type = _cp->tag_at(constantvalue_index); |
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848 switch ( _cp->basic_type_for_signature_at(signature_index) ) { |
0 | 849 case T_LONG: |
850 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
851 break; | |
852 case T_FLOAT: | |
853 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
854 break; | |
855 case T_DOUBLE: | |
856 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
857 break; | |
858 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
859 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
860 break; | |
861 case T_OBJECT: | |
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862 guarantee_property((_cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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863 && value_type.is_string()), |
0 | 864 "Bad string initial value in class file %s", CHECK); |
865 break; | |
866 default: | |
867 classfile_parse_error( | |
868 "Unable to set initial value %u in class file %s", | |
869 constantvalue_index, CHECK); | |
870 } | |
871 } | |
872 | |
873 | |
874 // Parse attributes for a field. | |
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875 void ClassFileParser::parse_field_attributes(u2 attributes_count, |
0 | 876 bool is_static, u2 signature_index, |
877 u2* constantvalue_index_addr, | |
878 bool* is_synthetic_addr, | |
879 u2* generic_signature_index_addr, | |
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880 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
0 | 881 TRAPS) { |
882 ClassFileStream* cfs = stream(); | |
883 assert(attributes_count > 0, "length should be greater than 0"); | |
884 u2 constantvalue_index = 0; | |
885 u2 generic_signature_index = 0; | |
886 bool is_synthetic = false; | |
887 u1* runtime_visible_annotations = NULL; | |
888 int runtime_visible_annotations_length = 0; | |
889 u1* runtime_invisible_annotations = NULL; | |
890 int runtime_invisible_annotations_length = 0; | |
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891 u1* runtime_visible_type_annotations = NULL; |
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892 int runtime_visible_type_annotations_length = 0; |
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893 u1* runtime_invisible_type_annotations = NULL; |
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894 int runtime_invisible_type_annotations_length = 0; |
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895 bool runtime_invisible_type_annotations_exists = false; |
0 | 896 while (attributes_count--) { |
897 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
898 u2 attribute_name_index = cfs->get_u2_fast(); | |
899 u4 attribute_length = cfs->get_u4_fast(); | |
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900 check_property(valid_symbol_at(attribute_name_index), |
0 | 901 "Invalid field attribute index %u in class file %s", |
902 attribute_name_index, | |
903 CHECK); | |
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904 Symbol* attribute_name = _cp->symbol_at(attribute_name_index); |
0 | 905 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
906 // ignore if non-static | |
907 if (constantvalue_index != 0) { | |
908 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
909 } | |
910 check_property( | |
911 attribute_length == 2, | |
912 "Invalid ConstantValue field attribute length %u in class file %s", | |
913 attribute_length, CHECK); | |
914 constantvalue_index = cfs->get_u2(CHECK); | |
915 if (_need_verify) { | |
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916 verify_constantvalue(constantvalue_index, signature_index, CHECK); |
0 | 917 } |
918 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
919 if (attribute_length != 0) { | |
920 classfile_parse_error( | |
921 "Invalid Synthetic field attribute length %u in class file %s", | |
922 attribute_length, CHECK); | |
923 } | |
924 is_synthetic = true; | |
925 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
926 if (attribute_length != 0) { | |
927 classfile_parse_error( | |
928 "Invalid Deprecated field attribute length %u in class file %s", | |
929 attribute_length, CHECK); | |
930 } | |
931 } else if (_major_version >= JAVA_1_5_VERSION) { | |
932 if (attribute_name == vmSymbols::tag_signature()) { | |
933 if (attribute_length != 2) { | |
934 classfile_parse_error( | |
935 "Wrong size %u for field's Signature attribute in class file %s", | |
936 attribute_length, CHECK); | |
937 } | |
17577 | 938 generic_signature_index = parse_generic_signature_attribute(CHECK); |
0 | 939 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
940 runtime_visible_annotations_length = attribute_length; | |
941 runtime_visible_annotations = cfs->get_u1_buffer(); | |
942 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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943 parse_annotations(runtime_visible_annotations, |
7587 | 944 runtime_visible_annotations_length, |
945 parsed_annotations, | |
946 CHECK); | |
0 | 947 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
948 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
949 runtime_invisible_annotations_length = attribute_length; | |
950 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
951 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
952 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
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953 } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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954 if (runtime_visible_type_annotations != NULL) { |
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955 classfile_parse_error( |
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956 "Multiple RuntimeVisibleTypeAnnotations attributes for field in class file %s", CHECK); |
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957 } |
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958 runtime_visible_type_annotations_length = attribute_length; |
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959 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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960 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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961 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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962 } else if (attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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963 if (runtime_invisible_type_annotations_exists) { |
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964 classfile_parse_error( |
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965 "Multiple RuntimeInvisibleTypeAnnotations attributes for field in class file %s", CHECK); |
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966 } else { |
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967 runtime_invisible_type_annotations_exists = true; |
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968 } |
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969 if (PreserveAllAnnotations) { |
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970 runtime_invisible_type_annotations_length = attribute_length; |
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971 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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972 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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973 } |
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974 cfs->skip_u1(attribute_length, CHECK); |
0 | 975 } else { |
976 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
977 } | |
978 } else { | |
979 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
980 } | |
981 } | |
982 | |
983 *constantvalue_index_addr = constantvalue_index; | |
984 *is_synthetic_addr = is_synthetic; | |
985 *generic_signature_index_addr = generic_signature_index; | |
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986 AnnotationArray* a = assemble_annotations(runtime_visible_annotations, |
0 | 987 runtime_visible_annotations_length, |
988 runtime_invisible_annotations, | |
989 runtime_invisible_annotations_length, | |
990 CHECK); | |
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991 parsed_annotations->set_field_annotations(a); |
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992 a = assemble_annotations(runtime_visible_type_annotations, |
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993 runtime_visible_type_annotations_length, |
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994 runtime_invisible_type_annotations, |
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995 runtime_invisible_type_annotations_length, |
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996 CHECK); |
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997 parsed_annotations->set_field_type_annotations(a); |
0 | 998 return; |
999 } | |
1000 | |
1001 | |
1002 // Field allocation types. Used for computing field offsets. | |
1003 | |
1004 enum FieldAllocationType { | |
1005 STATIC_OOP, // Oops | |
1006 STATIC_BYTE, // Boolean, Byte, char | |
1007 STATIC_SHORT, // shorts | |
1008 STATIC_WORD, // ints | |
3938 | 1009 STATIC_DOUBLE, // aligned long or double |
0 | 1010 NONSTATIC_OOP, |
1011 NONSTATIC_BYTE, | |
1012 NONSTATIC_SHORT, | |
1013 NONSTATIC_WORD, | |
1014 NONSTATIC_DOUBLE, | |
3938 | 1015 MAX_FIELD_ALLOCATION_TYPE, |
1016 BAD_ALLOCATION_TYPE = -1 | |
0 | 1017 }; |
1018 | |
3938 | 1019 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
1020 BAD_ALLOCATION_TYPE, // 0 | |
1021 BAD_ALLOCATION_TYPE, // 1 | |
1022 BAD_ALLOCATION_TYPE, // 2 | |
1023 BAD_ALLOCATION_TYPE, // 3 | |
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1024 NONSTATIC_BYTE , // T_BOOLEAN = 4, |
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1025 NONSTATIC_SHORT, // T_CHAR = 5, |
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1026 NONSTATIC_WORD, // T_FLOAT = 6, |
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1027 NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
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1028 NONSTATIC_BYTE, // T_BYTE = 8, |
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1029 NONSTATIC_SHORT, // T_SHORT = 9, |
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1030 NONSTATIC_WORD, // T_INT = 10, |
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1031 NONSTATIC_DOUBLE, // T_LONG = 11, |
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1032 NONSTATIC_OOP, // T_OBJECT = 12, |
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1033 NONSTATIC_OOP, // T_ARRAY = 13, |
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1034 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1035 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1036 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1037 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1038 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1039 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
3938 | 1040 BAD_ALLOCATION_TYPE, // 0 |
1041 BAD_ALLOCATION_TYPE, // 1 | |
1042 BAD_ALLOCATION_TYPE, // 2 | |
1043 BAD_ALLOCATION_TYPE, // 3 | |
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1044 STATIC_BYTE , // T_BOOLEAN = 4, |
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1045 STATIC_SHORT, // T_CHAR = 5, |
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1046 STATIC_WORD, // T_FLOAT = 6, |
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1047 STATIC_DOUBLE, // T_DOUBLE = 7, |
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1048 STATIC_BYTE, // T_BYTE = 8, |
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1049 STATIC_SHORT, // T_SHORT = 9, |
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1050 STATIC_WORD, // T_INT = 10, |
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1051 STATIC_DOUBLE, // T_LONG = 11, |
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1052 STATIC_OOP, // T_OBJECT = 12, |
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1053 STATIC_OOP, // T_ARRAY = 13, |
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1054 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1055 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1056 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1057 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1058 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1059 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
0 | 1060 }; |
1061 | |
3938 | 1062 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
1063 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
1064 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
1065 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
1066 return result; | |
1067 } | |
1068 | |
1069 class FieldAllocationCount: public ResourceObj { | |
1070 public: | |
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1071 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
3938 | 1072 |
1073 FieldAllocationCount() { | |
1074 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
1075 count[i] = 0; | |
1076 } | |
1077 } | |
1078 | |
1079 FieldAllocationType update(bool is_static, BasicType type) { | |
1080 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1081 // Make sure there is no overflow with injected fields. |
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1082 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
3938 | 1083 count[atype]++; |
1084 return atype; | |
1085 } | |
1086 }; | |
1087 | |
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1088 Array<u2>* ClassFileParser::parse_fields(Symbol* class_name, |
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1089 bool is_interface, |
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1090 FieldAllocationCount *fac, |
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1091 u2* java_fields_count_ptr, TRAPS) { |
0 | 1092 ClassFileStream* cfs = stream(); |
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1093 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 1094 u2 length = cfs->get_u2_fast(); |
3938 | 1095 *java_fields_count_ptr = length; |
1096 | |
1097 int num_injected = 0; | |
1098 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1099 int total_fields = length + num_injected; |
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1100 |
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1101 // The field array starts with tuples of shorts |
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1102 // [access, name index, sig index, initial value index, byte offset]. |
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1103 // A generic signature slot only exists for field with generic |
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1104 // signature attribute. And the access flag is set with |
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1105 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1106 // signature slots are at the end of the field array and after all |
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1107 // other fields data. |
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1108 // |
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1109 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1110 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1111 // ... |
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1112 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1113 // [generic signature index] |
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1114 // [generic signature index] |
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1115 // ... |
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1116 // |
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1117 // Allocate a temporary resource array for field data. For each field, |
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1118 // a slot is reserved in the temporary array for the generic signature |
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1119 // index. After parsing all fields, the data are copied to a permanent |
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1120 // array and any unused slots will be discarded. |
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1121 ResourceMark rm(THREAD); |
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1122 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1123 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
0 | 1124 |
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1125 // The generic signature slots start after all other fields' data. |
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1126 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1127 int num_generic_signature = 0; |
0 | 1128 for (int n = 0; n < length; n++) { |
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1129 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
0 | 1130 |
1131 AccessFlags access_flags; | |
1132 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1133 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
0 | 1134 access_flags.set_flags(flags); |
1135 | |
1136 u2 name_index = cfs->get_u2_fast(); | |
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1137 int cp_size = _cp->length(); |
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1138 check_property(valid_symbol_at(name_index), |
0 | 1139 "Invalid constant pool index %u for field name in class file %s", |
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1140 name_index, |
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1141 CHECK_NULL); |
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1142 Symbol* name = _cp->symbol_at(name_index); |
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1143 verify_legal_field_name(name, CHECK_NULL); |
0 | 1144 |
1145 u2 signature_index = cfs->get_u2_fast(); | |
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1146 check_property(valid_symbol_at(signature_index), |
0 | 1147 "Invalid constant pool index %u for field signature in class file %s", |
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1148 signature_index, CHECK_NULL); |
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1149 Symbol* sig = _cp->symbol_at(signature_index); |
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1150 verify_legal_field_signature(name, sig, CHECK_NULL); |
0 | 1151 |
1152 u2 constantvalue_index = 0; | |
1153 bool is_synthetic = false; | |
1154 u2 generic_signature_index = 0; | |
1155 bool is_static = access_flags.is_static(); | |
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1156 FieldAnnotationCollector parsed_annotations(_loader_data); |
0 | 1157 |
1158 u2 attributes_count = cfs->get_u2_fast(); | |
1159 if (attributes_count > 0) { | |
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1160 parse_field_attributes(attributes_count, is_static, signature_index, |
0 | 1161 &constantvalue_index, &is_synthetic, |
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1162 &generic_signature_index, &parsed_annotations, |
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1163 CHECK_NULL); |
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1164 if (parsed_annotations.field_annotations() != NULL) { |
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1165 if (_fields_annotations == NULL) { |
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1166 _fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1167 _loader_data, length, NULL, |
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1168 CHECK_NULL); |
0 | 1169 } |
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1170 _fields_annotations->at_put(n, parsed_annotations.field_annotations()); |
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1171 parsed_annotations.set_field_annotations(NULL); |
0 | 1172 } |
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1173 if (parsed_annotations.field_type_annotations() != NULL) { |
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1174 if (_fields_type_annotations == NULL) { |
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1175 _fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1176 _loader_data, length, NULL, |
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1177 CHECK_NULL); |
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1178 } |
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1179 _fields_type_annotations->at_put(n, parsed_annotations.field_type_annotations()); |
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1180 parsed_annotations.set_field_type_annotations(NULL); |
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1181 } |
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1182 |
0 | 1183 if (is_synthetic) { |
1184 access_flags.set_is_synthetic(); | |
1185 } | |
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1186 if (generic_signature_index != 0) { |
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1187 access_flags.set_field_has_generic_signature(); |
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1188 fa[generic_signature_slot] = generic_signature_index; |
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1189 generic_signature_slot ++; |
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1190 num_generic_signature ++; |
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1191 } |
0 | 1192 } |
1193 | |
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1194 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
3938 | 1195 field->initialize(access_flags.as_short(), |
1196 name_index, | |
1197 signature_index, | |
7587 | 1198 constantvalue_index); |
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1199 BasicType type = _cp->basic_type_for_signature_at(signature_index); |
0 | 1200 |
1201 // Remember how many oops we encountered and compute allocation type | |
3938 | 1202 FieldAllocationType atype = fac->update(is_static, type); |
7587 | 1203 field->set_allocation_type(atype); |
1204 | |
1205 // After field is initialized with type, we can augment it with aux info | |
1206 if (parsed_annotations.has_any_annotations()) | |
1207 parsed_annotations.apply_to(field); | |
3938 | 1208 } |
1209 | |
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1210 int index = length; |
3938 | 1211 if (num_injected != 0) { |
1212 for (int n = 0; n < num_injected; n++) { | |
1213 // Check for duplicates | |
1214 if (injected[n].may_be_java) { | |
1215 Symbol* name = injected[n].name(); | |
1216 Symbol* signature = injected[n].signature(); | |
1217 bool duplicate = false; | |
1218 for (int i = 0; i < length; i++) { | |
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1219 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
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1220 if (name == _cp->symbol_at(f->name_index()) && |
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1221 signature == _cp->symbol_at(f->signature_index())) { |
3938 | 1222 // Symbol is desclared in Java so skip this one |
1223 duplicate = true; | |
1224 break; | |
1225 } | |
1226 } | |
1227 if (duplicate) { | |
1228 // These will be removed from the field array at the end | |
1229 continue; | |
1230 } | |
1231 } | |
1232 | |
1233 // Injected field | |
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1234 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
3938 | 1235 field->initialize(JVM_ACC_FIELD_INTERNAL, |
1236 injected[n].name_index, | |
1237 injected[n].signature_index, | |
1238 0); | |
1239 | |
1240 BasicType type = FieldType::basic_type(injected[n].signature()); | |
1241 | |
1242 // Remember how many oops we encountered and compute allocation type | |
1243 FieldAllocationType atype = fac->update(false, type); | |
7587 | 1244 field->set_allocation_type(atype); |
3938 | 1245 index++; |
1246 } | |
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1247 } |
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1248 |
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1249 // Now copy the fields' data from the temporary resource array. |
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1250 // Sometimes injected fields already exist in the Java source so |
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1251 // the fields array could be too long. In that case the |
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1252 // fields array is trimed. Also unused slots that were reserved |
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1253 // for generic signature indexes are discarded. |
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1254 Array<u2>* fields = MetadataFactory::new_array<u2>( |
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1255 _loader_data, index * FieldInfo::field_slots + num_generic_signature, |
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1256 CHECK_NULL); |
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1257 _fields = fields; // save in case of error |
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1258 { |
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1259 int i = 0; |
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1260 for (; i < index * FieldInfo::field_slots; i++) { |
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1261 fields->at_put(i, fa[i]); |
3938 | 1262 } |
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1263 for (int j = total_fields * FieldInfo::field_slots; |
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1264 j < generic_signature_slot; j++) { |
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1265 fields->at_put(i++, fa[j]); |
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1266 } |
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1267 assert(i == fields->length(), ""); |
0 | 1268 } |
1269 | |
1270 if (_need_verify && length > 1) { | |
1271 // Check duplicated fields | |
1272 ResourceMark rm(THREAD); | |
1273 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1274 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
1275 initialize_hashtable(names_and_sigs); | |
1276 bool dup = false; | |
1277 { | |
1278 debug_only(No_Safepoint_Verifier nsv;) | |
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1279 for (AllFieldStream fs(fields, _cp); !fs.done(); fs.next()) { |
3938 | 1280 Symbol* name = fs.name(); |
1281 Symbol* sig = fs.signature(); | |
0 | 1282 // If no duplicates, add name/signature in hashtable names_and_sigs. |
1283 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
1284 dup = true; | |
1285 break; | |
1286 } | |
1287 } | |
1288 } | |
1289 if (dup) { | |
1290 classfile_parse_error("Duplicate field name&signature in class file %s", | |
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1291 CHECK_NULL); |
0 | 1292 } |
1293 } | |
1294 | |
1295 return fields; | |
1296 } | |
1297 | |
1298 | |
1299 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
1300 while (length-- > 0) { | |
1301 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
1302 } | |
1303 } | |
1304 | |
1305 | |
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1306 u2* ClassFileParser::parse_exception_table(u4 code_length, |
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1307 u4 exception_table_length, |
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1308 TRAPS) { |
0 | 1309 ClassFileStream* cfs = stream(); |
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1310 |
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1311 u2* exception_table_start = cfs->get_u2_buffer(); |
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1312 assert(exception_table_start != NULL, "null exception table"); |
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1313 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1314 // Will check legal target after parsing code array in verifier. |
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1315 if (_need_verify) { |
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1316 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1317 u2 start_pc = cfs->get_u2_fast(); |
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1318 u2 end_pc = cfs->get_u2_fast(); |
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1319 u2 handler_pc = cfs->get_u2_fast(); |
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1320 u2 catch_type_index = cfs->get_u2_fast(); |
0 | 1321 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1322 "Illegal exception table range in class file %s", |
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1323 CHECK_NULL); |
0 | 1324 guarantee_property(handler_pc < code_length, |
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1325 "Illegal exception table handler in class file %s", |
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1326 CHECK_NULL); |
0 | 1327 if (catch_type_index != 0) { |
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1328 guarantee_property(valid_klass_reference_at(catch_type_index), |
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1329 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
0 | 1330 } |
1331 } | |
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1332 } else { |
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1333 cfs->skip_u2_fast(exception_table_length * 4); |
0 | 1334 } |
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1335 return exception_table_start; |
0 | 1336 } |
1337 | |
1338 void ClassFileParser::parse_linenumber_table( | |
1339 u4 code_attribute_length, u4 code_length, | |
1340 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
1341 ClassFileStream* cfs = stream(); | |
1342 unsigned int num_entries = cfs->get_u2(CHECK); | |
1343 | |
1344 // Each entry is a u2 start_pc, and a u2 line_number | |
1345 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
1346 | |
1347 // Verify line number attribute and table length | |
1348 check_property( | |
1349 code_attribute_length == sizeof(u2) + length_in_bytes, | |
1350 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
1351 | |
1352 cfs->guarantee_more(length_in_bytes, CHECK); | |
1353 | |
1354 if ((*write_stream) == NULL) { | |
1355 if (length_in_bytes > fixed_buffer_size) { | |
1356 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
1357 } else { | |
1358 (*write_stream) = new CompressedLineNumberWriteStream( | |
1359 linenumbertable_buffer, fixed_buffer_size); | |
1360 } | |
1361 } | |
1362 | |
1363 while (num_entries-- > 0) { | |
1364 u2 bci = cfs->get_u2_fast(); // start_pc | |
1365 u2 line = cfs->get_u2_fast(); // line_number | |
1366 guarantee_property(bci < code_length, | |
1367 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
1368 (*write_stream)->write_pair(bci, line); | |
1369 } | |
1370 } | |
1371 | |
1372 | |
1373 // Class file LocalVariableTable elements. | |
1374 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
1375 public: | |
1376 u2 start_bci; | |
1377 u2 length; | |
1378 u2 name_cp_index; | |
1379 u2 descriptor_cp_index; | |
1380 u2 slot; | |
1381 }; | |
1382 | |
1383 | |
6197 | 1384 class LVT_Hash: public CHeapObj<mtClass> { |
0 | 1385 public: |
1386 LocalVariableTableElement *_elem; // element | |
1387 LVT_Hash* _next; // Next entry in hash table | |
1388 }; | |
1389 | |
1390 unsigned int hash(LocalVariableTableElement *elem) { | |
1391 unsigned int raw_hash = elem->start_bci; | |
1392 | |
1393 raw_hash = elem->length + raw_hash * 37; | |
1394 raw_hash = elem->name_cp_index + raw_hash * 37; | |
1395 raw_hash = elem->slot + raw_hash * 37; | |
1396 | |
1397 return raw_hash % HASH_ROW_SIZE; | |
1398 } | |
1399 | |
1400 void initialize_hashtable(LVT_Hash** table) { | |
1401 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1402 table[i] = NULL; | |
1403 } | |
1404 } | |
1405 | |
1406 void clear_hashtable(LVT_Hash** table) { | |
1407 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1408 LVT_Hash* current = table[i]; | |
1409 LVT_Hash* next; | |
1410 while (current != NULL) { | |
1411 next = current->_next; | |
1412 current->_next = NULL; | |
1413 delete(current); | |
1414 current = next; | |
1415 } | |
1416 table[i] = NULL; | |
1417 } | |
1418 } | |
1419 | |
1420 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
1421 LVT_Hash* entry = table[index]; | |
1422 | |
1423 /* | |
1424 * 3-tuple start_bci/length/slot has to be unique key, | |
1425 * so the following comparison seems to be redundant: | |
1426 * && elem->name_cp_index == entry->_elem->name_cp_index | |
1427 */ | |
1428 while (entry != NULL) { | |
1429 if (elem->start_bci == entry->_elem->start_bci | |
1430 && elem->length == entry->_elem->length | |
1431 && elem->name_cp_index == entry->_elem->name_cp_index | |
1432 && elem->slot == entry->_elem->slot | |
1433 ) { | |
1434 return entry; | |
1435 } | |
1436 entry = entry->_next; | |
1437 } | |
1438 return NULL; | |
1439 } | |
1440 | |
1441 // Return false if the local variable is found in table. | |
1442 // Return true if no duplicate is found. | |
1443 // And local variable is added as a new entry in table. | |
1444 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
1445 // First lookup for duplicates | |
1446 int index = hash(elem); | |
1447 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
1448 | |
1449 if (entry != NULL) { | |
1450 return false; | |
1451 } | |
1452 // No duplicate is found, allocate a new entry and fill it. | |
1453 if ((entry = new LVT_Hash()) == NULL) { | |
1454 return false; | |
1455 } | |
1456 entry->_elem = elem; | |
1457 | |
1458 // Insert into hash table | |
1459 entry->_next = table[index]; | |
1460 table[index] = entry; | |
1461 | |
1462 return true; | |
1463 } | |
1464 | |
1465 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
1466 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
1467 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
1468 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
1469 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
1470 lvt->signature_cp_index = 0; | |
1471 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
1472 } | |
1473 | |
1474 // Function is used to parse both attributes: | |
1475 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
1476 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
1477 u2 max_locals, | |
1478 u4 code_attribute_length, | |
1479 u2* localvariable_table_length, | |
1480 bool isLVTT, | |
1481 TRAPS) { | |
1482 ClassFileStream* cfs = stream(); | |
1483 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
1484 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
1485 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
1486 // Verify local variable table attribute has right length | |
1487 if (_need_verify) { | |
1488 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
1489 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
1490 } | |
1491 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
1492 assert(localvariable_table_start != NULL, "null local variable table"); | |
1493 if (!_need_verify) { | |
1494 cfs->skip_u2_fast(size); | |
1495 } else { | |
1496 cfs->guarantee_more(size * 2, CHECK_NULL); | |
1497 for(int i = 0; i < (*localvariable_table_length); i++) { | |
1498 u2 start_pc = cfs->get_u2_fast(); | |
1499 u2 length = cfs->get_u2_fast(); | |
1500 u2 name_index = cfs->get_u2_fast(); | |
1501 u2 descriptor_index = cfs->get_u2_fast(); | |
1502 u2 index = cfs->get_u2_fast(); | |
1503 // Assign to a u4 to avoid overflow | |
1504 u4 end_pc = (u4)start_pc + (u4)length; | |
1505 | |
1506 if (start_pc >= code_length) { | |
1507 classfile_parse_error( | |
1508 "Invalid start_pc %u in %s in class file %s", | |
1509 start_pc, tbl_name, CHECK_NULL); | |
1510 } | |
1511 if (end_pc > code_length) { | |
1512 classfile_parse_error( | |
1513 "Invalid length %u in %s in class file %s", | |
1514 length, tbl_name, CHECK_NULL); | |
1515 } | |
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1516 int cp_size = _cp->length(); |
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1517 guarantee_property(valid_symbol_at(name_index), |
0 | 1518 "Name index %u in %s has bad constant type in class file %s", |
1519 name_index, tbl_name, CHECK_NULL); | |
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1520 guarantee_property(valid_symbol_at(descriptor_index), |
0 | 1521 "Signature index %u in %s has bad constant type in class file %s", |
1522 descriptor_index, tbl_name, CHECK_NULL); | |
1523 | |
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1524 Symbol* name = _cp->symbol_at(name_index); |
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1525 Symbol* sig = _cp->symbol_at(descriptor_index); |
0 | 1526 verify_legal_field_name(name, CHECK_NULL); |
1527 u2 extra_slot = 0; | |
1528 if (!isLVTT) { | |
1529 verify_legal_field_signature(name, sig, CHECK_NULL); | |
1530 | |
1531 // 4894874: check special cases for double and long local variables | |
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1532 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1533 sig == vmSymbols::type_signature(T_LONG)) { |
0 | 1534 extra_slot = 1; |
1535 } | |
1536 } | |
1537 guarantee_property((index + extra_slot) < max_locals, | |
1538 "Invalid index %u in %s in class file %s", | |
1539 index, tbl_name, CHECK_NULL); | |
1540 } | |
1541 } | |
1542 return localvariable_table_start; | |
1543 } | |
1544 | |
1545 | |
1546 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
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1547 u1* u1_array, u2* u2_array, TRAPS) { |
0 | 1548 ClassFileStream* cfs = stream(); |
1549 u2 index = 0; // index in the array with long/double occupying two slots | |
1550 u4 i1 = *u1_index; | |
1551 u4 i2 = *u2_index + 1; | |
1552 for(int i = 0; i < array_length; i++) { | |
1553 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
1554 index++; | |
1555 if (tag == ITEM_Long || tag == ITEM_Double) { | |
1556 index++; | |
1557 } else if (tag == ITEM_Object) { | |
1558 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
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1559 guarantee_property(valid_klass_reference_at(class_index), |
0 | 1560 "Bad class index %u in StackMap in class file %s", |
1561 class_index, CHECK); | |
1562 } else if (tag == ITEM_Uninitialized) { | |
1563 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
1564 guarantee_property( | |
1565 offset < code_length, | |
1566 "Bad uninitialized type offset %u in StackMap in class file %s", | |
1567 offset, CHECK); | |
1568 } else { | |
1569 guarantee_property( | |
1570 tag <= (u1)ITEM_Uninitialized, | |
1571 "Unknown variable type %u in StackMap in class file %s", | |
1572 tag, CHECK); | |
1573 } | |
1574 } | |
1575 u2_array[*u2_index] = index; | |
1576 *u1_index = i1; | |
1577 *u2_index = i2; | |
1578 } | |
1579 | |
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1580 u1* ClassFileParser::parse_stackmap_table( |
0 | 1581 u4 code_attribute_length, TRAPS) { |
1582 if (code_attribute_length == 0) | |
1583 return NULL; | |
1584 | |
1585 ClassFileStream* cfs = stream(); | |
1586 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
1587 assert(stackmap_table_start != NULL, "null stackmap table"); | |
1588 | |
1589 // check code_attribute_length first | |
1590 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
1591 | |
1592 if (!_need_verify && !DumpSharedSpaces) { | |
1593 return NULL; | |
1594 } | |
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1595 return stackmap_table_start; |
0 | 1596 } |
1597 | |
1598 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
1599 u4 method_attribute_length, | |
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1600 TRAPS) { |
0 | 1601 ClassFileStream* cfs = stream(); |
1602 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
1603 *checked_exceptions_length = cfs->get_u2_fast(); | |
1604 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1605 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
1606 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
1607 if (!_need_verify) { | |
1608 cfs->skip_u2_fast(size); | |
1609 } else { | |
1610 // Verify each value in the checked exception table | |
1611 u2 checked_exception; | |
1612 u2 len = *checked_exceptions_length; | |
1613 cfs->guarantee_more(2 * len, CHECK_NULL); | |
1614 for (int i = 0; i < len; i++) { | |
1615 checked_exception = cfs->get_u2_fast(); | |
1616 check_property( | |
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1617 valid_klass_reference_at(checked_exception), |
0 | 1618 "Exception name has bad type at constant pool %u in class file %s", |
1619 checked_exception, CHECK_NULL); | |
1620 } | |
1621 } | |
1622 // check exceptions attribute length | |
1623 if (_need_verify) { | |
1624 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
1625 sizeof(u2) * size), | |
1626 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
1627 } | |
1628 return checked_exceptions_start; | |
1629 } | |
1630 | |
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1631 void ClassFileParser::throwIllegalSignature( |
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1632 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
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1633 ResourceMark rm(THREAD); |
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1634 Exceptions::fthrow(THREAD_AND_LOCATION, |
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1635 vmSymbols::java_lang_ClassFormatError(), |
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1636 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
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1637 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
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1638 } |
0 | 1639 |
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1640 // Skip an annotation. Return >=limit if there is any problem. |
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1641 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
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1642 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
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1643 // value := switch (tag:u1) { ... } |
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1644 index += 2; // skip atype |
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1645 if ((index += 2) >= limit) return limit; // read nmem |
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1646 int nmem = Bytes::get_Java_u2(buffer+index-2); |
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1647 while (--nmem >= 0 && index < limit) { |
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1648 index += 2; // skip member |
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1649 index = skip_annotation_value(buffer, limit, index); |
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1650 } |
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1651 return index; |
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1652 } |
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1653 |
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1654 // Skip an annotation value. Return >=limit if there is any problem. |
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1655 int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
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1656 // value := switch (tag:u1) { |
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1657 // case B, C, I, S, Z, D, F, J, c: con:u2; |
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1658 // case e: e_class:u2 e_name:u2; |
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1659 // case s: s_con:u2; |
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1660 // case [: do(nval:u2) {value}; |
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1661 // case @: annotation; |
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1662 // case s: s_con:u2; |
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1663 // } |
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1664 if ((index += 1) >= limit) return limit; // read tag |
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1665 u1 tag = buffer[index-1]; |
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1666 switch (tag) { |
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1667 case 'B': case 'C': case 'I': case 'S': case 'Z': |
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1668 case 'D': case 'F': case 'J': case 'c': case 's': |
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1669 index += 2; // skip con or s_con |
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1670 break; |
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|
1671 case 'e': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1672 index += 4; // skip e_class, e_name |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1673 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1674 case '[': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1675 { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1676 if ((index += 2) >= limit) return limit; // read nval |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1677 int nval = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1678 while (--nval >= 0 && index < limit) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1679 index = skip_annotation_value(buffer, limit, index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1680 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1681 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1682 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1683 case '@': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1684 index = skip_annotation(buffer, limit, index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1685 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1686 default: |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1687 assert(false, "annotation tag"); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1688 return limit; // bad tag byte |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1689 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1690 return index; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1691 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1692 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1693 // Sift through annotations, looking for those significant to the VM: |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
1694 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1695 ClassFileParser::AnnotationCollector* coll, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1696 TRAPS) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1697 // annotations := do(nann:u2) {annotation} |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1698 int index = 0; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1699 if ((index += 2) >= limit) return; // read nann |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1700 int nann = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1701 enum { // initial annotation layout |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1702 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1703 count_off = 2, // u2 such as 1 (one value) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1704 member_off = 4, // utf8 such as 'value' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1705 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1706 e_tag_val = 'e', |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1707 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1708 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1709 e_size = 11, // end of 'e' annotation |
7587 | 1710 c_tag_val = 'c', // payload is type |
1711 c_con_off = 7, // utf8 payload, such as 'I' | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1712 c_size = 9, // end of 'c' annotation |
7587 | 1713 s_tag_val = 's', // payload is String |
1714 s_con_off = 7, // utf8 payload, such as 'Ljava/lang/String;' | |
1715 s_size = 9, | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1716 min_size = 6 // smallest possible size (zero members) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1717 }; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1718 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1719 int index0 = index; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1720 index = skip_annotation(buffer, limit, index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1721 u1* abase = buffer + index0; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1722 int atype = Bytes::get_Java_u2(abase + atype_off); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1723 int count = Bytes::get_Java_u2(abase + count_off); |
8719
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
1724 Symbol* aname = check_symbol_at(_cp, atype); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1725 if (aname == NULL) break; // invalid annotation name |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1726 Symbol* member = NULL; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1727 if (count >= 1) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1728 int member_index = Bytes::get_Java_u2(abase + member_off); |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
1729 member = check_symbol_at(_cp, member_index); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1730 if (member == NULL) break; // invalid member name |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1731 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1732 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1733 // Here is where parsing particular annotations will take place. |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
1734 AnnotationCollector::ID id = coll->annotation_index(_loader_data, aname); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1735 if (id == AnnotationCollector::_unknown) continue; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1736 coll->set_annotation(id); |
7587 | 1737 |
1738 if (id == AnnotationCollector::_sun_misc_Contended) { | |
10305
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1739 // @Contended can optionally specify the contention group. |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1740 // |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1741 // Contended group defines the equivalence class over the fields: |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1742 // the fields within the same contended group are not treated distinct. |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1743 // The only exception is default group, which does not incur the |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1744 // equivalence. Naturally, contention group for classes is meaningless. |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1745 // |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1746 // While the contention group is specified as String, annotation |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1747 // values are already interned, and we might as well use the constant |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1748 // pool index as the group tag. |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1749 // |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1750 u2 group_index = 0; // default contended group |
7587 | 1751 if (count == 1 |
1752 && s_size == (index - index0) // match size | |
1753 && s_tag_val == *(abase + tag_off) | |
1754 && member == vmSymbols::value_name()) { | |
10305
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1755 group_index = Bytes::get_Java_u2(abase + s_con_off); |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1756 if (_cp->symbol_at(group_index)->utf8_length() == 0) { |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1757 group_index = 0; // default contended group |
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1758 } |
7587 | 1759 } |
10305
50e9396d5257
8014509: @Contended: explicit default value behaves differently from the implicit value
shade
parents:
10303
diff
changeset
|
1760 coll->set_contended_group(group_index); |
7587 | 1761 } |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1762 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1763 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1764 |
7587 | 1765 ClassFileParser::AnnotationCollector::ID |
1766 ClassFileParser::AnnotationCollector::annotation_index(ClassLoaderData* loader_data, | |
1767 Symbol* name) { | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1768 vmSymbols::SID sid = vmSymbols::find_sid(name); |
7639
22ead76da3f4
8006758: LinkResolver assertion (caused by @Contended changes)
kmo
parents:
7615
diff
changeset
|
1769 // Privileged code can use all annotations. Other code silently drops some. |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1770 const bool privileged = loader_data->is_the_null_class_loader_data() || |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1771 loader_data->is_ext_class_loader_data() || |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1772 loader_data->is_anonymous(); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1773 switch (sid) { |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1774 case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_reflect_CallerSensitive_signature): |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1775 if (_location != _in_method) break; // only allow for methods |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1776 if (!privileged) break; // only allow in privileged code |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8719
diff
changeset
|
1777 return _method_CallerSensitive; |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1778 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1779 if (_location != _in_method) break; // only allow for methods |
7587 | 1780 if (!privileged) break; // only allow in privileged code |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1781 return _method_ForceInline; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1782 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1783 if (_location != _in_method) break; // only allow for methods |
7587 | 1784 if (!privileged) break; // only allow in privileged code |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1785 return _method_DontInline; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1786 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1787 if (_location != _in_method) break; // only allow for methods |
7587 | 1788 if (!privileged) break; // only allow in privileged code |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1789 return _method_LambdaForm_Compiled; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1790 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1791 if (_location != _in_method) break; // only allow for methods |
7587 | 1792 if (!privileged) break; // only allow in privileged code |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6227
diff
changeset
|
1793 return _method_LambdaForm_Hidden; |
12333
cacc4c6bfc80
8025233: Move sun.invoke.Stable into java.lang.invoke package
vlivanov
parents:
12269
diff
changeset
|
1794 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_Stable_signature): |
12190
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12131
diff
changeset
|
1795 if (_location != _in_field) break; // only allow for fields |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12131
diff
changeset
|
1796 if (!privileged) break; // only allow in privileged code |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12131
diff
changeset
|
1797 return _field_Stable; |
7587 | 1798 case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_misc_Contended_signature): |
1799 if (_location != _in_field && _location != _in_class) break; // only allow for fields and classes | |
1800 if (!EnableContended || (RestrictContended && !privileged)) break; // honor privileges | |
1801 return _sun_misc_Contended; | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1802 default: break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1803 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1804 return AnnotationCollector::_unknown; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1805 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1806 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1807 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
7587 | 1808 if (is_contended()) |
1809 f->set_contended_group(contended_group()); | |
12190
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12131
diff
changeset
|
1810 if (is_stable()) |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12131
diff
changeset
|
1811 f->set_stable(true); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1812 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1813 |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
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1814 ClassFileParser::FieldAnnotationCollector::~FieldAnnotationCollector() { |
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1815 // If there's an error deallocate metadata for field annotations |
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1816 MetadataFactory::free_array<u1>(_loader_data, _field_annotations); |
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1817 MetadataFactory::free_array<u1>(_loader_data, _field_type_annotations); |
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1818 } |
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1819 |
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1820 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
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1821 if (has_annotation(_method_CallerSensitive)) |
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1822 m->set_caller_sensitive(true); |
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1823 if (has_annotation(_method_ForceInline)) |
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1824 m->set_force_inline(true); |
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1825 if (has_annotation(_method_DontInline)) |
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1826 m->set_dont_inline(true); |
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1827 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
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1828 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
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1829 if (has_annotation(_method_LambdaForm_Hidden)) |
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1830 m->set_hidden(true); |
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1831 } |
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1832 |
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1833 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
7587 | 1834 k->set_is_contended(is_contended()); |
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1835 } |
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1836 |
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1837 |
0 | 1838 #define MAX_ARGS_SIZE 255 |
1839 #define MAX_CODE_SIZE 65535 | |
1840 #define INITIAL_MAX_LVT_NUMBER 256 | |
1841 | |
8031 | 1842 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
1843 * | |
1844 * Rules for LVT's and LVTT's are: | |
1845 * - There can be any number of LVT's and LVTT's. | |
1846 * - If there are n LVT's, it is the same as if there was just | |
1847 * one LVT containing all the entries from the n LVT's. | |
1848 * - There may be no more than one LVT entry per local variable. | |
1849 * Two LVT entries are 'equal' if these fields are the same: | |
1850 * start_pc, length, name, slot | |
1851 * - There may be no more than one LVTT entry per each LVT entry. | |
1852 * Each LVTT entry has to match some LVT entry. | |
1853 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
1854 */ | |
1855 void ClassFileParser::copy_localvariable_table(ConstMethod* cm, | |
1856 int lvt_cnt, | |
1857 u2* localvariable_table_length, | |
1858 u2** localvariable_table_start, | |
1859 int lvtt_cnt, | |
1860 u2* localvariable_type_table_length, | |
1861 u2** localvariable_type_table_start, | |
1862 TRAPS) { | |
1863 | |
1864 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
1865 initialize_hashtable(lvt_Hash); | |
1866 | |
1867 // To fill LocalVariableTable in | |
1868 Classfile_LVT_Element* cf_lvt; | |
1869 LocalVariableTableElement* lvt = cm->localvariable_table_start(); | |
1870 | |
1871 for (int tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
1872 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
1873 for (int idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
1874 copy_lvt_element(&cf_lvt[idx], lvt); | |
1875 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
1876 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
1877 && _need_verify | |
1878 && _major_version >= JAVA_1_5_VERSION) { | |
1879 clear_hashtable(lvt_Hash); | |
1880 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
1881 "entry for '%s' in class file %s", | |
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1882 _cp->symbol_at(lvt->name_cp_index)->as_utf8(), |
8031 | 1883 CHECK); |
1884 } | |
1885 } | |
1886 } | |
1887 | |
1888 // To merge LocalVariableTable and LocalVariableTypeTable | |
1889 Classfile_LVT_Element* cf_lvtt; | |
1890 LocalVariableTableElement lvtt_elem; | |
1891 | |
1892 for (int tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
1893 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
1894 for (int idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
1895 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
1896 int index = hash(&lvtt_elem); | |
1897 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
1898 if (entry == NULL) { | |
1899 if (_need_verify) { | |
1900 clear_hashtable(lvt_Hash); | |
1901 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
1902 "does not match any LVT entry", | |
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1903 _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
8031 | 1904 CHECK); |
1905 } | |
1906 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
1907 clear_hashtable(lvt_Hash); | |
1908 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
1909 "entry for '%s' in class file %s", | |
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1910 _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
8031 | 1911 CHECK); |
1912 } else { | |
1913 // to add generic signatures into LocalVariableTable | |
1914 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
1915 } | |
1916 } | |
1917 } | |
1918 clear_hashtable(lvt_Hash); | |
1919 } | |
1920 | |
1921 | |
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1922 void ClassFileParser::copy_method_annotations(ConstMethod* cm, |
8031 | 1923 u1* runtime_visible_annotations, |
1924 int runtime_visible_annotations_length, | |
1925 u1* runtime_invisible_annotations, | |
1926 int runtime_invisible_annotations_length, | |
1927 u1* runtime_visible_parameter_annotations, | |
1928 int runtime_visible_parameter_annotations_length, | |
1929 u1* runtime_invisible_parameter_annotations, | |
1930 int runtime_invisible_parameter_annotations_length, | |
1931 u1* runtime_visible_type_annotations, | |
1932 int runtime_visible_type_annotations_length, | |
1933 u1* runtime_invisible_type_annotations, | |
1934 int runtime_invisible_type_annotations_length, | |
1935 u1* annotation_default, | |
1936 int annotation_default_length, | |
1937 TRAPS) { | |
1938 | |
1939 AnnotationArray* a; | |
1940 | |
1941 if (runtime_visible_annotations_length + | |
1942 runtime_invisible_annotations_length > 0) { | |
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1943 a = assemble_annotations(runtime_visible_annotations, |
8031 | 1944 runtime_visible_annotations_length, |
1945 runtime_invisible_annotations, | |
1946 runtime_invisible_annotations_length, | |
1947 CHECK); | |
1948 cm->set_method_annotations(a); | |
1949 } | |
1950 | |
1951 if (runtime_visible_parameter_annotations_length + | |
1952 runtime_invisible_parameter_annotations_length > 0) { | |
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1953 a = assemble_annotations(runtime_visible_parameter_annotations, |
8031 | 1954 runtime_visible_parameter_annotations_length, |
1955 runtime_invisible_parameter_annotations, | |
1956 runtime_invisible_parameter_annotations_length, | |
1957 CHECK); | |
1958 cm->set_parameter_annotations(a); | |
1959 } | |
1960 | |
1961 if (annotation_default_length > 0) { | |
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1962 a = assemble_annotations(annotation_default, |
8031 | 1963 annotation_default_length, |
1964 NULL, | |
1965 0, | |
1966 CHECK); | |
1967 cm->set_default_annotations(a); | |
1968 } | |
1969 | |
1970 if (runtime_visible_type_annotations_length + | |
1971 runtime_invisible_type_annotations_length > 0) { | |
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1972 a = assemble_annotations(runtime_visible_type_annotations, |
8031 | 1973 runtime_visible_type_annotations_length, |
1974 runtime_invisible_type_annotations, | |
1975 runtime_invisible_type_annotations_length, | |
1976 CHECK); | |
1977 cm->set_type_annotations(a); | |
1978 } | |
1979 } | |
1980 | |
1981 | |
0 | 1982 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions |
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1983 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
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1984 // Method* to save footprint, so we only know the size of the resulting Method* when the |
0 | 1985 // entire method attribute is parsed. |
1986 // | |
1987 // The promoted_flags parameter is used to pass relevant access_flags | |
1988 // from the method back up to the containing klass. These flag values | |
1989 // are added to klass's access_flags. | |
1990 | |
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1991 methodHandle ClassFileParser::parse_method(bool is_interface, |
0 | 1992 AccessFlags *promoted_flags, |
1993 TRAPS) { | |
1994 ClassFileStream* cfs = stream(); | |
1995 methodHandle nullHandle; | |
1996 ResourceMark rm(THREAD); | |
1997 // Parse fixed parts | |
1998 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1999 | |
2000 int flags = cfs->get_u2_fast(); | |
2001 u2 name_index = cfs->get_u2_fast(); | |
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2002 int cp_size = _cp->length(); |
0 | 2003 check_property( |
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2004 valid_symbol_at(name_index), |
0 | 2005 "Illegal constant pool index %u for method name in class file %s", |
2006 name_index, CHECK_(nullHandle)); | |
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2007 Symbol* name = _cp->symbol_at(name_index); |
0 | 2008 verify_legal_method_name(name, CHECK_(nullHandle)); |
2009 | |
2010 u2 signature_index = cfs->get_u2_fast(); | |
2011 guarantee_property( | |
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2012 valid_symbol_at(signature_index), |
0 | 2013 "Illegal constant pool index %u for method signature in class file %s", |
2014 signature_index, CHECK_(nullHandle)); | |
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2015 Symbol* signature = _cp->symbol_at(signature_index); |
0 | 2016 |
2017 AccessFlags access_flags; | |
2018 if (name == vmSymbols::class_initializer_name()) { | |
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2019 // We ignore the other access flags for a valid class initializer. |
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2020 // (JVM Spec 2nd ed., chapter 4.6) |
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2021 if (_major_version < 51) { // backward compatibility |
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2022 flags = JVM_ACC_STATIC; |
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2023 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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2024 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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2025 } |
0 | 2026 } else { |
2027 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
2028 } | |
2029 | |
2030 int args_size = -1; // only used when _need_verify is true | |
2031 if (_need_verify) { | |
2032 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
2033 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
2034 if (args_size > MAX_ARGS_SIZE) { | |
2035 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
2036 } | |
2037 } | |
2038 | |
2039 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
2040 | |
2041 // Default values for code and exceptions attribute elements | |
2042 u2 max_stack = 0; | |
2043 u2 max_locals = 0; | |
2044 u4 code_length = 0; | |
2045 u1* code_start = 0; | |
2046 u2 exception_table_length = 0; | |
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2047 u2* exception_table_start = NULL; |
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2048 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
0 | 2049 u2 checked_exceptions_length = 0; |
2050 u2* checked_exceptions_start = NULL; | |
2051 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
2052 int linenumber_table_length = 0; | |
2053 int total_lvt_length = 0; | |
2054 u2 lvt_cnt = 0; | |
2055 u2 lvtt_cnt = 0; | |
2056 bool lvt_allocated = false; | |
2057 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
2058 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
2059 u2* localvariable_table_length; | |
2060 u2** localvariable_table_start; | |
2061 u2* localvariable_type_table_length; | |
2062 u2** localvariable_type_table_start; | |
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2063 u2 method_parameters_length = 0; |
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2064 u1* method_parameters_data = NULL; |
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2065 bool method_parameters_seen = false; |
0 | 2066 bool parsed_code_attribute = false; |
2067 bool parsed_checked_exceptions_attribute = false; | |
2068 bool parsed_stackmap_attribute = false; | |
2069 // stackmap attribute - JDK1.5 | |
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2070 u1* stackmap_data = NULL; |
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2071 int stackmap_data_length = 0; |
0 | 2072 u2 generic_signature_index = 0; |
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2073 MethodAnnotationCollector parsed_annotations; |
0 | 2074 u1* runtime_visible_annotations = NULL; |
2075 int runtime_visible_annotations_length = 0; | |
2076 u1* runtime_invisible_annotations = NULL; | |
2077 int runtime_invisible_annotations_length = 0; | |
2078 u1* runtime_visible_parameter_annotations = NULL; | |
2079 int runtime_visible_parameter_annotations_length = 0; | |
2080 u1* runtime_invisible_parameter_annotations = NULL; | |
2081 int runtime_invisible_parameter_annotations_length = 0; | |
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2082 u1* runtime_visible_type_annotations = NULL; |
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2083 int runtime_visible_type_annotations_length = 0; |
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2084 u1* runtime_invisible_type_annotations = NULL; |
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2085 int runtime_invisible_type_annotations_length = 0; |
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2086 bool runtime_invisible_type_annotations_exists = false; |
0 | 2087 u1* annotation_default = NULL; |
2088 int annotation_default_length = 0; | |
2089 | |
2090 // Parse code and exceptions attribute | |
2091 u2 method_attributes_count = cfs->get_u2_fast(); | |
2092 while (method_attributes_count--) { | |
2093 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
2094 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
2095 u4 method_attribute_length = cfs->get_u4_fast(); | |
2096 check_property( | |
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2097 valid_symbol_at(method_attribute_name_index), |
0 | 2098 "Invalid method attribute name index %u in class file %s", |
2099 method_attribute_name_index, CHECK_(nullHandle)); | |
2100 | |
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2101 Symbol* method_attribute_name = _cp->symbol_at(method_attribute_name_index); |
0 | 2102 if (method_attribute_name == vmSymbols::tag_code()) { |
2103 // Parse Code attribute | |
2104 if (_need_verify) { | |
6934 | 2105 guarantee_property( |
2106 !access_flags.is_native() && !access_flags.is_abstract(), | |
0 | 2107 "Code attribute in native or abstract methods in class file %s", |
2108 CHECK_(nullHandle)); | |
2109 } | |
2110 if (parsed_code_attribute) { | |
2111 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
2112 } | |
2113 parsed_code_attribute = true; | |
2114 | |
2115 // Stack size, locals size, and code size | |
2116 if (_major_version == 45 && _minor_version <= 2) { | |
2117 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
2118 max_stack = cfs->get_u1_fast(); | |
2119 max_locals = cfs->get_u1_fast(); | |
2120 code_length = cfs->get_u2_fast(); | |
2121 } else { | |
2122 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
2123 max_stack = cfs->get_u2_fast(); | |
2124 max_locals = cfs->get_u2_fast(); | |
2125 code_length = cfs->get_u4_fast(); | |
2126 } | |
2127 if (_need_verify) { | |
2128 guarantee_property(args_size <= max_locals, | |
2129 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
2130 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
2131 "Invalid method Code length %u in class file %s", | |
2132 code_length, CHECK_(nullHandle)); | |
2133 } | |
2134 // Code pointer | |
2135 code_start = cfs->get_u1_buffer(); | |
2136 assert(code_start != NULL, "null code start"); | |
2137 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
2138 cfs->skip_u1_fast(code_length); | |
2139 | |
2140 // Exception handler table | |
2141 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
2142 exception_table_length = cfs->get_u2_fast(); | |
2143 if (exception_table_length > 0) { | |
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|
2144 exception_table_start = |
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2145 parse_exception_table(code_length, exception_table_length, CHECK_(nullHandle)); |
0 | 2146 } |
2147 | |
2148 // Parse additional attributes in code attribute | |
2149 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
2150 u2 code_attributes_count = cfs->get_u2_fast(); | |
92
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|
2151 |
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2152 unsigned int calculated_attribute_length = 0; |
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|
2153 |
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|
2154 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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|
2155 calculated_attribute_length = |
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|
2156 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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|
2157 } else { |
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|
2158 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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|
2159 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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|
2160 } |
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|
2161 calculated_attribute_length += |
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|
2162 code_length + |
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|
2163 sizeof(exception_table_length) + |
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|
2164 sizeof(code_attributes_count) + |
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|
2165 exception_table_length * |
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|
2166 ( sizeof(u2) + // start_pc |
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2167 sizeof(u2) + // end_pc |
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2168 sizeof(u2) + // handler_pc |
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2169 sizeof(u2) ); // catch_type_index |
0 | 2170 |
2171 while (code_attributes_count--) { | |
2172 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
2173 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
2174 u4 code_attribute_length = cfs->get_u4_fast(); | |
2175 calculated_attribute_length += code_attribute_length + | |
2176 sizeof(code_attribute_name_index) + | |
2177 sizeof(code_attribute_length); | |
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2178 check_property(valid_symbol_at(code_attribute_name_index), |
0 | 2179 "Invalid code attribute name index %u in class file %s", |
2180 code_attribute_name_index, | |
2181 CHECK_(nullHandle)); | |
2182 if (LoadLineNumberTables && | |
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2183 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { |
0 | 2184 // Parse and compress line number table |
2185 parse_linenumber_table(code_attribute_length, code_length, | |
2186 &linenumber_table, CHECK_(nullHandle)); | |
2187 | |
2188 } else if (LoadLocalVariableTables && | |
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2189 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { |
0 | 2190 // Parse local variable table |
2191 if (!lvt_allocated) { | |
2192 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2193 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2194 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2195 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2196 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2197 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2198 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2199 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2200 lvt_allocated = true; | |
2201 } | |
2202 if (lvt_cnt == max_lvt_cnt) { | |
2203 max_lvt_cnt <<= 1; | |
12922 | 2204 localvariable_table_length = REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); |
2205 localvariable_table_start = REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
0 | 2206 } |
2207 localvariable_table_start[lvt_cnt] = | |
2208 parse_localvariable_table(code_length, | |
2209 max_locals, | |
2210 code_attribute_length, | |
2211 &localvariable_table_length[lvt_cnt], | |
2212 false, // is not LVTT | |
2213 CHECK_(nullHandle)); | |
2214 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
2215 lvt_cnt++; | |
2216 } else if (LoadLocalVariableTypeTables && | |
2217 _major_version >= JAVA_1_5_VERSION && | |
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2218 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { |
0 | 2219 if (!lvt_allocated) { |
2220 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2221 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2222 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2223 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2224 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2225 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2226 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2227 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2228 lvt_allocated = true; | |
2229 } | |
2230 // Parse local variable type table | |
2231 if (lvtt_cnt == max_lvtt_cnt) { | |
2232 max_lvtt_cnt <<= 1; | |
12922 | 2233 localvariable_type_table_length = REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); |
2234 localvariable_type_table_start = REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
0 | 2235 } |
2236 localvariable_type_table_start[lvtt_cnt] = | |
2237 parse_localvariable_table(code_length, | |
2238 max_locals, | |
2239 code_attribute_length, | |
2240 &localvariable_type_table_length[lvtt_cnt], | |
2241 true, // is LVTT | |
2242 CHECK_(nullHandle)); | |
2243 lvtt_cnt++; | |
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2244 } else if (_major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && |
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2245 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { |
0 | 2246 // Stack map is only needed by the new verifier in JDK1.5. |
2247 if (parsed_stackmap_attribute) { | |
2248 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
2249 } | |
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2250 stackmap_data = parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); |
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2251 stackmap_data_length = code_attribute_length; |
0 | 2252 parsed_stackmap_attribute = true; |
2253 } else { | |
2254 // Skip unknown attributes | |
2255 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
2256 } | |
2257 } | |
2258 // check method attribute length | |
2259 if (_need_verify) { | |
2260 guarantee_property(method_attribute_length == calculated_attribute_length, | |
2261 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
2262 } | |
2263 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
2264 // Parse Exceptions attribute | |
2265 if (parsed_checked_exceptions_attribute) { | |
2266 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
2267 } | |
2268 parsed_checked_exceptions_attribute = true; | |
2269 checked_exceptions_start = | |
2270 parse_checked_exceptions(&checked_exceptions_length, | |
2271 method_attribute_length, | |
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2272 CHECK_(nullHandle)); |
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2273 } else if (method_attribute_name == vmSymbols::tag_method_parameters()) { |
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|
2274 // reject multiple method parameters |
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|
2275 if (method_parameters_seen) { |
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|
2276 classfile_parse_error("Multiple MethodParameters attributes in class file %s", CHECK_(nullHandle)); |
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|
2277 } |
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|
2278 method_parameters_seen = true; |
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2279 method_parameters_length = cfs->get_u1_fast(); |
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2280 if (method_attribute_length != (method_parameters_length * 4u) + 1u) { |
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|
2281 classfile_parse_error( |
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|
2282 "Invalid MethodParameters method attribute length %u in class file", |
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|
2283 method_attribute_length, CHECK_(nullHandle)); |
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|
2284 } |
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2285 method_parameters_data = cfs->get_u1_buffer(); |
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2286 cfs->skip_u2_fast(method_parameters_length); |
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|
2287 cfs->skip_u2_fast(method_parameters_length); |
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2288 // ignore this attribute if it cannot be reflected |
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|
2289 if (!SystemDictionary::Parameter_klass_loaded()) |
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|
2290 method_parameters_length = 0; |
0 | 2291 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { |
2292 if (method_attribute_length != 0) { | |
2293 classfile_parse_error( | |
2294 "Invalid Synthetic method attribute length %u in class file %s", | |
2295 method_attribute_length, CHECK_(nullHandle)); | |
2296 } | |
2297 // Should we check that there hasn't already been a synthetic attribute? | |
2298 access_flags.set_is_synthetic(); | |
2299 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
2300 if (method_attribute_length != 0) { | |
2301 classfile_parse_error( | |
2302 "Invalid Deprecated method attribute length %u in class file %s", | |
2303 method_attribute_length, CHECK_(nullHandle)); | |
2304 } | |
2305 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2306 if (method_attribute_name == vmSymbols::tag_signature()) { | |
2307 if (method_attribute_length != 2) { | |
2308 classfile_parse_error( | |
2309 "Invalid Signature attribute length %u in class file %s", | |
2310 method_attribute_length, CHECK_(nullHandle)); | |
2311 } | |
17577 | 2312 generic_signature_index = parse_generic_signature_attribute(CHECK_(nullHandle)); |
0 | 2313 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
2314 runtime_visible_annotations_length = method_attribute_length; | |
2315 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2316 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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2317 parse_annotations(runtime_visible_annotations, |
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2318 runtime_visible_annotations_length, &parsed_annotations, |
6934 | 2319 CHECK_(nullHandle)); |
0 | 2320 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
2321 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
2322 runtime_invisible_annotations_length = method_attribute_length; | |
2323 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2324 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2325 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
2326 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
2327 runtime_visible_parameter_annotations_length = method_attribute_length; | |
2328 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
2329 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
2330 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
2331 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
2332 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
2333 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
2334 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
2335 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
2336 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
2337 annotation_default_length = method_attribute_length; | |
2338 annotation_default = cfs->get_u1_buffer(); | |
2339 assert(annotation_default != NULL, "null annotation default"); | |
2340 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
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|
2341 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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2342 if (runtime_visible_type_annotations != NULL) { |
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2343 classfile_parse_error( |
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2344 "Multiple RuntimeVisibleTypeAnnotations attributes for method in class file %s", |
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2345 CHECK_(nullHandle)); |
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|
2346 } |
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|
2347 runtime_visible_type_annotations_length = method_attribute_length; |
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|
2348 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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|
2349 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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|
2350 // No need for the VM to parse Type annotations |
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|
2351 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
12201
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|
2352 } else if (method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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|
2353 if (runtime_invisible_type_annotations_exists) { |
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|
2354 classfile_parse_error( |
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|
2355 "Multiple RuntimeInvisibleTypeAnnotations attributes for method in class file %s", |
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|
2356 CHECK_(nullHandle)); |
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diff
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|
2357 } else { |
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|
2358 runtime_invisible_type_annotations_exists = true; |
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|
2359 } |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2360 if (PreserveAllAnnotations) { |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2361 runtime_invisible_type_annotations_length = method_attribute_length; |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2362 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2363 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2364 } |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2365 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
0 | 2366 } else { |
2367 // Skip unknown attributes | |
2368 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2369 } | |
2370 } else { | |
2371 // Skip unknown attributes | |
2372 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2373 } | |
2374 } | |
2375 | |
2376 if (linenumber_table != NULL) { | |
2377 linenumber_table->write_terminator(); | |
2378 linenumber_table_length = linenumber_table->position(); | |
2379 } | |
2380 | |
2381 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
2382 if (_need_verify) { | |
2383 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
2384 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
2385 } | |
2386 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2387 // All sizing information for a Method* is finally available, now create it |
8031 | 2388 InlineTableSizes sizes( |
2389 total_lvt_length, | |
2390 linenumber_table_length, | |
2391 exception_table_length, | |
2392 checked_exceptions_length, | |
2393 method_parameters_length, | |
2394 generic_signature_index, | |
2395 runtime_visible_annotations_length + | |
2396 runtime_invisible_annotations_length, | |
2397 runtime_visible_parameter_annotations_length + | |
2398 runtime_invisible_parameter_annotations_length, | |
2399 runtime_visible_type_annotations_length + | |
2400 runtime_invisible_type_annotations_length, | |
2401 annotation_default_length, | |
2402 0); | |
2403 | |
6934 | 2404 Method* m = Method::allocate( |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2405 _loader_data, code_length, access_flags, &sizes, |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
2406 ConstMethod::NORMAL, CHECK_(nullHandle)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2407 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2408 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
0 | 2409 |
2410 // Fill in information from fixed part (access_flags already set) | |
8719
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coleenp
parents:
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diff
changeset
|
2411 m->set_constants(_cp); |
0 | 2412 m->set_name_index(name_index); |
2413 m->set_signature_index(signature_index); | |
2414 #ifdef CC_INTERP | |
2415 // hmm is there a gc issue here?? | |
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diff
changeset
|
2416 ResultTypeFinder rtf(_cp->symbol_at(signature_index)); |
0 | 2417 m->set_result_index(rtf.type()); |
2418 #endif | |
2419 | |
2420 if (args_size >= 0) { | |
2421 m->set_size_of_parameters(args_size); | |
2422 } else { | |
2423 m->compute_size_of_parameters(THREAD); | |
2424 } | |
2425 #ifdef ASSERT | |
2426 if (args_size >= 0) { | |
2427 m->compute_size_of_parameters(THREAD); | |
2428 assert(args_size == m->size_of_parameters(), ""); | |
2429 } | |
2430 #endif | |
2431 | |
2432 // Fill in code attribute information | |
2433 m->set_max_stack(max_stack); | |
2434 m->set_max_locals(max_locals); | |
8719
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diff
changeset
|
2435 if (stackmap_data != NULL) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
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8716
diff
changeset
|
2436 m->constMethod()->copy_stackmap_data(_loader_data, stackmap_data, |
c8b31b461e1a
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coleenp
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diff
changeset
|
2437 stackmap_data_length, CHECK_NULL); |
c8b31b461e1a
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coleenp
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diff
changeset
|
2438 } |
0 | 2439 |
2440 // Copy byte codes | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1108
diff
changeset
|
2441 m->set_code(code_start); |
0 | 2442 |
2443 // Copy line number table | |
2444 if (linenumber_table != NULL) { | |
2445 memcpy(m->compressed_linenumber_table(), | |
2446 linenumber_table->buffer(), linenumber_table_length); | |
2447 } | |
2448 | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2449 // Copy exception table |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2450 if (exception_table_length > 0) { |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2451 int size = |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2452 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2453 copy_u2_with_conversion((u2*) m->exception_table_start(), |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2454 exception_table_start, size); |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2455 } |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6100
diff
changeset
|
2456 |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
2457 // Copy method parameters |
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
2458 if (method_parameters_length > 0) { |
ade95d680b42
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coleenp
parents:
7457
diff
changeset
|
2459 MethodParametersElement* elem = m->constMethod()->method_parameters_start(); |
7983
24a91505f9d5
8006949: Update hotspot for MethodParameters format change
emc
parents:
7639
diff
changeset
|
2460 for (int i = 0; i < method_parameters_length; i++) { |
24a91505f9d5
8006949: Update hotspot for MethodParameters format change
emc
parents:
7639
diff
changeset
|
2461 elem[i].name_cp_index = Bytes::get_Java_u2(method_parameters_data); |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
2462 method_parameters_data += 2; |
10154
d1644a010f52
8007154: Remove support for u4 MethodParameter flags fields
emc
parents:
10128
diff
changeset
|
2463 elem[i].flags = Bytes::get_Java_u2(method_parameters_data); |
d1644a010f52
8007154: Remove support for u4 MethodParameter flags fields
emc
parents:
10128
diff
changeset
|
2464 method_parameters_data += 2; |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
2465 } |
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
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7457
diff
changeset
|
2466 } |
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
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7457
diff
changeset
|
2467 |
0 | 2468 // Copy checked exceptions |
2469 if (checked_exceptions_length > 0) { | |
2470 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
2471 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
2472 } | |
2473 | |
8031 | 2474 // Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
0 | 2475 if (total_lvt_length > 0) { |
2476 promoted_flags->set_has_localvariable_table(); | |
8031 | 2477 copy_localvariable_table(m->constMethod(), lvt_cnt, |
2478 localvariable_table_length, | |
2479 localvariable_table_start, | |
2480 lvtt_cnt, | |
2481 localvariable_type_table_length, | |
2482 localvariable_type_table_start, CHECK_NULL); | |
0 | 2483 } |
2484 | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2485 if (parsed_annotations.has_any_annotations()) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2486 parsed_annotations.apply_to(m); |
8031 | 2487 |
2488 // Copy annotations | |
8719
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coleenp
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8716
diff
changeset
|
2489 copy_method_annotations(m->constMethod(), |
8031 | 2490 runtime_visible_annotations, |
2491 runtime_visible_annotations_length, | |
2492 runtime_invisible_annotations, | |
2493 runtime_invisible_annotations_length, | |
2494 runtime_visible_parameter_annotations, | |
2495 runtime_visible_parameter_annotations_length, | |
2496 runtime_invisible_parameter_annotations, | |
2497 runtime_invisible_parameter_annotations_length, | |
2498 runtime_visible_type_annotations, | |
2499 runtime_visible_type_annotations_length, | |
2500 runtime_invisible_type_annotations, | |
2501 runtime_invisible_type_annotations_length, | |
2502 annotation_default, | |
2503 annotation_default_length, | |
2504 CHECK_NULL); | |
0 | 2505 |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2506 if (name == vmSymbols::finalize_method_name() && |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2507 signature == vmSymbols::void_method_signature()) { |
0 | 2508 if (m->is_empty_method()) { |
2509 _has_empty_finalizer = true; | |
2510 } else { | |
2511 _has_finalizer = true; | |
2512 } | |
2513 } | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2514 if (name == vmSymbols::object_initializer_name() && |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2515 signature == vmSymbols::void_method_signature() && |
0 | 2516 m->is_vanilla_constructor()) { |
2517 _has_vanilla_constructor = true; | |
2518 } | |
2519 | |
8031 | 2520 NOT_PRODUCT(m->verify()); |
0 | 2521 return m; |
2522 } | |
2523 | |
2524 | |
2525 // The promoted_flags parameter is used to pass relevant access_flags | |
2526 // from the methods back up to the containing klass. These flag values | |
2527 // are added to klass's access_flags. | |
2528 | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2529 Array<Method*>* ClassFileParser::parse_methods(bool is_interface, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2530 AccessFlags* promoted_flags, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2531 bool* has_final_method, |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2532 bool* declares_default_methods, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2533 TRAPS) { |
0 | 2534 ClassFileStream* cfs = stream(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2535 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 2536 u2 length = cfs->get_u2_fast(); |
2537 if (length == 0) { | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2538 _methods = Universe::the_empty_method_array(); |
0 | 2539 } else { |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2540 _methods = MetadataFactory::new_array<Method*>(_loader_data, length, NULL, CHECK_NULL); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2541 |
0 | 2542 HandleMark hm(THREAD); |
2543 for (int index = 0; index < length; index++) { | |
8719
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
2544 methodHandle method = parse_method(is_interface, |
0 | 2545 promoted_flags, |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2546 CHECK_NULL); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2547 |
0 | 2548 if (method->is_final()) { |
2549 *has_final_method = true; | |
2550 } | |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2551 // declares_default_methods: declares concrete instance methods, any access flags |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2552 // used for interface initialization, and default method inheritance analysis |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2553 if (is_interface && !(*declares_default_methods) |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2554 && !method->is_abstract() && !method->is_static()) { |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
2555 *declares_default_methods = true; |
6934 | 2556 } |
8719
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
2557 _methods->at_put(index, method()); |
0 | 2558 } |
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2559 |
0 | 2560 if (_need_verify && length > 1) { |
2561 // Check duplicated methods | |
2562 ResourceMark rm(THREAD); | |
2563 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2564 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2565 initialize_hashtable(names_and_sigs); | |
2566 bool dup = false; | |
2567 { | |
2568 debug_only(No_Safepoint_Verifier nsv;) | |
2569 for (int i = 0; i < length; i++) { | |
8719
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
2570 Method* m = _methods->at(i); |
0 | 2571 // If no duplicates, add name/signature in hashtable names_and_sigs. |
2572 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2573 dup = true; | |
2574 break; | |
2575 } | |
2576 } | |
2577 } | |
2578 if (dup) { | |
2579 classfile_parse_error("Duplicate method name&signature in class file %s", | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2580 CHECK_NULL); |
0 | 2581 } |
2582 } | |
2583 } | |
8719
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
2584 return _methods; |
0 | 2585 } |
2586 | |
2587 | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2588 intArray* ClassFileParser::sort_methods(Array<Method*>* methods) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2589 int length = methods->length(); |
3245
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2590 // If JVMTI original method ordering or sharing is enabled we have to |
0 | 2591 // remember the original class file ordering. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2592 // We temporarily use the vtable_index field in the Method* to store the |
0 | 2593 // class file index, so we can read in after calling qsort. |
3245
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2594 // Put the method ordering in the shared archive. |
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2595 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2596 for (int index = 0; index < length; index++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2597 Method* m = methods->at(index); |
0 | 2598 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
2599 m->set_vtable_index(index); | |
2600 } | |
2601 } | |
2602 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2603 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
8031 | 2604 Method::sort_methods(methods); |
0 | 2605 |
8719
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
2606 intArray* method_ordering = NULL; |
3245
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2607 // If JVMTI original method ordering or sharing is enabled construct int |
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2608 // array remembering the original ordering |
8ce625481709
7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
coleenp
parents:
2461
diff
changeset
|
2609 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
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8716
diff
changeset
|
2610 method_ordering = new intArray(length); |
0 | 2611 for (int index = 0; index < length; index++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2612 Method* m = methods->at(index); |
0 | 2613 int old_index = m->vtable_index(); |
2614 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2615 method_ordering->at_put(index, old_index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2616 m->set_vtable_index(Method::invalid_vtable_index); |
0 | 2617 } |
2618 } | |
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2619 return method_ordering; |
0 | 2620 } |
2621 | |
17577 | 2622 // Parse generic_signature attribute for methods and fields |
2623 u2 ClassFileParser::parse_generic_signature_attribute(TRAPS) { | |
2624 ClassFileStream* cfs = stream(); | |
2625 cfs->guarantee_more(2, CHECK_0); // generic_signature_index | |
2626 u2 generic_signature_index = cfs->get_u2_fast(); | |
2627 check_property( | |
2628 valid_symbol_at(generic_signature_index), | |
2629 "Invalid Signature attribute at constant pool index %u in class file %s", | |
2630 generic_signature_index, CHECK_0); | |
2631 return generic_signature_index; | |
2632 } | |
0 | 2633 |
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2634 void ClassFileParser::parse_classfile_sourcefile_attribute(TRAPS) { |
0 | 2635 ClassFileStream* cfs = stream(); |
2636 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2637 u2 sourcefile_index = cfs->get_u2_fast(); | |
2638 check_property( | |
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2639 valid_symbol_at(sourcefile_index), |
0 | 2640 "Invalid SourceFile attribute at constant pool index %u in class file %s", |
2641 sourcefile_index, CHECK); | |
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2642 set_class_sourcefile_index(sourcefile_index); |
0 | 2643 } |
2644 | |
2645 | |
2646 | |
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2647 void ClassFileParser::parse_classfile_source_debug_extension_attribute(int length, TRAPS) { |
0 | 2648 ClassFileStream* cfs = stream(); |
2649 u1* sde_buffer = cfs->get_u1_buffer(); | |
2650 assert(sde_buffer != NULL, "null sde buffer"); | |
2651 | |
2652 // Don't bother storing it if there is no way to retrieve it | |
2653 if (JvmtiExport::can_get_source_debug_extension()) { | |
6226 | 2654 assert((length+1) > length, "Overflow checking"); |
2655 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
2656 for (int i = 0; i < length; i++) { | |
2657 sde[i] = sde_buffer[i]; | |
2658 } | |
2659 sde[length] = '\0'; | |
2660 set_class_sde_buffer((char*)sde, length); | |
0 | 2661 } |
2662 // Got utf8 string, set stream position forward | |
2663 cfs->skip_u1(length, CHECK); | |
2664 } | |
2665 | |
2666 | |
2667 // Inner classes can be static, private or protected (classic VM does this) | |
2668 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2669 | |
2670 // Return number of classes in the inner classes attribute table | |
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2671 u2 ClassFileParser::parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
5967
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2672 bool parsed_enclosingmethod_attribute, |
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2673 u2 enclosing_method_class_index, |
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2674 u2 enclosing_method_method_index, |
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2675 TRAPS) { |
0 | 2676 ClassFileStream* cfs = stream(); |
5967
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2677 u1* current_mark = cfs->current(); |
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2678 u2 length = 0; |
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2679 if (inner_classes_attribute_start != NULL) { |
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2680 cfs->set_current(inner_classes_attribute_start); |
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2681 cfs->guarantee_more(2, CHECK_0); // length |
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2682 length = cfs->get_u2_fast(); |
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2683 } |
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2684 |
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2685 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
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2686 // method data: |
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2687 // [inner_class_info_index, |
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2688 // outer_class_info_index, |
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2689 // inner_name_index, |
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2690 // inner_class_access_flags, |
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2691 // ... |
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|
2692 // enclosing_method_class_index, |
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|
2693 // enclosing_method_method_index] |
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|
2694 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
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2695 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(_loader_data, size, CHECK_0); |
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2696 _inner_classes = inner_classes; |
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2697 |
0 | 2698 int index = 0; |
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2699 int cp_size = _cp->length(); |
0 | 2700 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 |
2701 for (int n = 0; n < length; n++) { | |
2702 // Inner class index | |
2703 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2704 check_property( | |
2705 inner_class_info_index == 0 || | |
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2706 valid_klass_reference_at(inner_class_info_index), |
0 | 2707 "inner_class_info_index %u has bad constant type in class file %s", |
2708 inner_class_info_index, CHECK_0); | |
2709 // Outer class index | |
2710 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2711 check_property( | |
2712 outer_class_info_index == 0 || | |
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2713 valid_klass_reference_at(outer_class_info_index), |
0 | 2714 "outer_class_info_index %u has bad constant type in class file %s", |
2715 outer_class_info_index, CHECK_0); | |
2716 // Inner class name | |
2717 u2 inner_name_index = cfs->get_u2_fast(); | |
2718 check_property( | |
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2719 inner_name_index == 0 || valid_symbol_at(inner_name_index), |
0 | 2720 "inner_name_index %u has bad constant type in class file %s", |
2721 inner_name_index, CHECK_0); | |
2722 if (_need_verify) { | |
2723 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2724 "Class is both outer and inner class in class file %s", CHECK_0); | |
2725 } | |
2726 // Access flags | |
2727 AccessFlags inner_access_flags; | |
2728 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2729 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2730 // Set abstract bit for old class files for backward compatibility | |
2731 flags |= JVM_ACC_ABSTRACT; | |
2732 } | |
2733 verify_legal_class_modifiers(flags, CHECK_0); | |
2734 inner_access_flags.set_flags(flags); | |
2735 | |
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2736 inner_classes->at_put(index++, inner_class_info_index); |
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2737 inner_classes->at_put(index++, outer_class_info_index); |
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2738 inner_classes->at_put(index++, inner_name_index); |
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|
2739 inner_classes->at_put(index++, inner_access_flags.as_short()); |
0 | 2740 } |
2741 | |
2742 // 4347400: make sure there's no duplicate entry in the classes array | |
2743 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
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|
2744 for(int i = 0; i < length * 4; i += 4) { |
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|
2745 for(int j = i + 4; j < length * 4; j += 4) { |
6725
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|
2746 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
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|
2747 inner_classes->at(i+1) != inner_classes->at(j+1) || |
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|
2748 inner_classes->at(i+2) != inner_classes->at(j+2) || |
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|
2749 inner_classes->at(i+3) != inner_classes->at(j+3)), |
0 | 2750 "Duplicate entry in InnerClasses in class file %s", |
2751 CHECK_0); | |
2752 } | |
2753 } | |
2754 } | |
2755 | |
5967
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|
2756 // Set EnclosingMethod class and method indexes. |
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|
2757 if (parsed_enclosingmethod_attribute) { |
6725
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|
2758 inner_classes->at_put(index++, enclosing_method_class_index); |
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|
2759 inner_classes->at_put(index++, enclosing_method_method_index); |
5967
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|
2760 } |
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|
2761 assert(index == size, "wrong size"); |
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|
2762 |
f7c4174b33ba
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|
2763 // Restore buffer's current position. |
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|
2764 cfs->set_current(current_mark); |
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|
2765 |
0 | 2766 return length; |
2767 } | |
2768 | |
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|
2769 void ClassFileParser::parse_classfile_synthetic_attribute(TRAPS) { |
6222
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|
2770 set_class_synthetic_flag(true); |
0 | 2771 } |
2772 | |
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|
2773 void ClassFileParser::parse_classfile_signature_attribute(TRAPS) { |
0 | 2774 ClassFileStream* cfs = stream(); |
2775 u2 signature_index = cfs->get_u2(CHECK); | |
2776 check_property( | |
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|
2777 valid_symbol_at(signature_index), |
0 | 2778 "Invalid constant pool index %u in Signature attribute in class file %s", |
2779 signature_index, CHECK); | |
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|
2780 set_class_generic_signature_index(signature_index); |
0 | 2781 } |
2782 | |
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2783 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(u4 attribute_byte_length, TRAPS) { |
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|
2784 ClassFileStream* cfs = stream(); |
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|
2785 u1* current_start = cfs->current(); |
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diff
changeset
|
2786 |
20353
72fa1e83e5f9
8051002: Incorrectly merged share/vm/classfile/classFileParser.cpp was pushed to 8u20.
lfoltan
parents:
18027
diff
changeset
|
2787 guarantee_property(attribute_byte_length >= sizeof(u2), |
17574 | 2788 "Invalid BootstrapMethods attribute length %u in class file %s", |
2789 attribute_byte_length, | |
2790 CHECK); | |
2791 | |
2792 cfs->guarantee_more(attribute_byte_length, CHECK); | |
2793 | |
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diff
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|
2794 int attribute_array_length = cfs->get_u2_fast(); |
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diff
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|
2795 |
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diff
changeset
|
2796 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
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diff
changeset
|
2797 "Short length on BootstrapMethods in class file %s", |
dad31fc330cd
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diff
changeset
|
2798 CHECK); |
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diff
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|
2799 |
dad31fc330cd
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diff
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|
2800 // The attribute contains a counted array of counted tuples of shorts, |
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diff
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|
2801 // represending bootstrap specifiers: |
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diff
changeset
|
2802 // length*{bootstrap_method_index, argument_count*{argument_index}} |
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diff
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|
2803 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
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diff
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|
2804 // operand_count = number of shorts in attr, except for leading length |
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|
2805 |
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diff
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|
2806 // The attribute is copied into a short[] array. |
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diff
changeset
|
2807 // The array begins with a series of short[2] pairs, one for each tuple. |
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diff
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|
2808 int index_size = (attribute_array_length * 2); |
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diff
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|
2809 |
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|
2810 Array<u2>* operands = MetadataFactory::new_array<u2>(_loader_data, index_size + operand_count, CHECK); |
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|
2811 |
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|
2812 // Eagerly assign operands so they will be deallocated with the constant |
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|
2813 // pool if there is an error. |
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|
2814 _cp->set_operands(operands); |
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changeset
|
2815 |
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diff
changeset
|
2816 int operand_fill_index = index_size; |
8719
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|
2817 int cp_size = _cp->length(); |
2011
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diff
changeset
|
2818 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2819 for (int n = 0; n < attribute_array_length; n++) { |
dad31fc330cd
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parents:
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diff
changeset
|
2820 // Store a 32-bit offset into the header of the operand array. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2821 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
2011
dad31fc330cd
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diff
changeset
|
2822 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
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diff
changeset
|
2823 // Read a bootstrap specifier. |
dad31fc330cd
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parents:
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diff
changeset
|
2824 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2825 u2 bootstrap_method_index = cfs->get_u2_fast(); |
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
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diff
changeset
|
2826 u2 argument_count = cfs->get_u2_fast(); |
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2827 check_property( |
dad31fc330cd
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parents:
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diff
changeset
|
2828 valid_cp_range(bootstrap_method_index, cp_size) && |
8719
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coleenp
parents:
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diff
changeset
|
2829 _cp->tag_at(bootstrap_method_index).is_method_handle(), |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2830 "bootstrap_method_index %u has bad constant type in class file %s", |
2085 | 2831 bootstrap_method_index, |
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2832 CHECK); |
18056 | 2833 |
2834 guarantee_property((operand_fill_index + 1 + argument_count) < operands->length(), | |
2835 "Invalid BootstrapMethods num_bootstrap_methods or num_bootstrap_arguments value in class file %s", | |
2836 CHECK); | |
2837 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2838 operands->at_put(operand_fill_index++, bootstrap_method_index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2839 operands->at_put(operand_fill_index++, argument_count); |
2011
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jrose
parents:
1972
diff
changeset
|
2840 |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2841 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2842 for (int j = 0; j < argument_count; j++) { |
2085 | 2843 u2 argument_index = cfs->get_u2_fast(); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2844 check_property( |
2085 | 2845 valid_cp_range(argument_index, cp_size) && |
8719
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
2846 _cp->tag_at(argument_index).is_loadable_constant(), |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2847 "argument_index %u has bad constant type in class file %s", |
2085 | 2848 argument_index, |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2849 CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2850 operands->at_put(operand_fill_index++, argument_index); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2851 } |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2852 } |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2853 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2854 assert(operand_fill_index == operands->length(), "exact fill"); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2855 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2856 u1* current_end = cfs->current(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2857 guarantee_property(current_end == current_start + attribute_byte_length, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2858 "Bad length on BootstrapMethods in class file %s", |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2859 CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2860 } |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2861 |
8719
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coleenp
parents:
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diff
changeset
|
2862 void ClassFileParser::parse_classfile_attributes(ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2863 TRAPS) { |
0 | 2864 ClassFileStream* cfs = stream(); |
2865 // Set inner classes attribute to default sentinel | |
8719
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
2866 _inner_classes = Universe::the_empty_short_array(); |
0 | 2867 cfs->guarantee_more(2, CHECK); // attributes_count |
2868 u2 attributes_count = cfs->get_u2_fast(); | |
2869 bool parsed_sourcefile_attribute = false; | |
2870 bool parsed_innerclasses_attribute = false; | |
2871 bool parsed_enclosingmethod_attribute = false; | |
2011
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jrose
parents:
1972
diff
changeset
|
2872 bool parsed_bootstrap_methods_attribute = false; |
0 | 2873 u1* runtime_visible_annotations = NULL; |
2874 int runtime_visible_annotations_length = 0; | |
2875 u1* runtime_invisible_annotations = NULL; | |
2876 int runtime_invisible_annotations_length = 0; | |
7457
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stefank
parents:
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diff
changeset
|
2877 u1* runtime_visible_type_annotations = NULL; |
35431a769282
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stefank
parents:
7187
diff
changeset
|
2878 int runtime_visible_type_annotations_length = 0; |
35431a769282
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stefank
parents:
7187
diff
changeset
|
2879 u1* runtime_invisible_type_annotations = NULL; |
35431a769282
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parents:
7187
diff
changeset
|
2880 int runtime_invisible_type_annotations_length = 0; |
12201
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2881 bool runtime_invisible_type_annotations_exists = false; |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2882 u1* inner_classes_attribute_start = NULL; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2883 u4 inner_classes_attribute_length = 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2884 u2 enclosing_method_class_index = 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2885 u2 enclosing_method_method_index = 0; |
0 | 2886 // Iterate over attributes |
2887 while (attributes_count--) { | |
2888 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2889 u2 attribute_name_index = cfs->get_u2_fast(); | |
2890 u4 attribute_length = cfs->get_u4_fast(); | |
2891 check_property( | |
8719
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coleenp
parents:
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diff
changeset
|
2892 valid_symbol_at(attribute_name_index), |
0 | 2893 "Attribute name has bad constant pool index %u in class file %s", |
2894 attribute_name_index, CHECK); | |
8719
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coleenp
parents:
8716
diff
changeset
|
2895 Symbol* tag = _cp->symbol_at(attribute_name_index); |
0 | 2896 if (tag == vmSymbols::tag_source_file()) { |
2897 // Check for SourceFile tag | |
2898 if (_need_verify) { | |
2899 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2900 } | |
2901 if (parsed_sourcefile_attribute) { | |
2902 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2903 } else { | |
2904 parsed_sourcefile_attribute = true; | |
2905 } | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2906 parse_classfile_sourcefile_attribute(CHECK); |
0 | 2907 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
2908 // Check for SourceDebugExtension tag | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2909 parse_classfile_source_debug_extension_attribute((int)attribute_length, CHECK); |
0 | 2910 } else if (tag == vmSymbols::tag_inner_classes()) { |
2911 // Check for InnerClasses tag | |
2912 if (parsed_innerclasses_attribute) { | |
2913 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2914 } else { | |
2915 parsed_innerclasses_attribute = true; | |
2916 } | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2917 inner_classes_attribute_start = cfs->get_u1_buffer(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2918 inner_classes_attribute_length = attribute_length; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2919 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
0 | 2920 } else if (tag == vmSymbols::tag_synthetic()) { |
2921 // Check for Synthetic tag | |
2922 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2923 if (attribute_length != 0) { | |
2924 classfile_parse_error( | |
2925 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2926 attribute_length, CHECK); | |
2927 } | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2928 parse_classfile_synthetic_attribute(CHECK); |
0 | 2929 } else if (tag == vmSymbols::tag_deprecated()) { |
2930 // Check for Deprecatd tag - 4276120 | |
2931 if (attribute_length != 0) { | |
2932 classfile_parse_error( | |
2933 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2934 attribute_length, CHECK); | |
2935 } | |
2936 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2937 if (tag == vmSymbols::tag_signature()) { | |
2938 if (attribute_length != 2) { | |
2939 classfile_parse_error( | |
2940 "Wrong Signature attribute length %u in class file %s", | |
2941 attribute_length, CHECK); | |
2942 } | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2943 parse_classfile_signature_attribute(CHECK); |
0 | 2944 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
2945 runtime_visible_annotations_length = attribute_length; | |
2946 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2947 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2948 parse_annotations(runtime_visible_annotations, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2949 runtime_visible_annotations_length, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2950 parsed_annotations, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2951 CHECK); |
0 | 2952 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
2953 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2954 runtime_invisible_annotations_length = attribute_length; | |
2955 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2956 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2957 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2958 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2959 if (parsed_enclosingmethod_attribute) { | |
2960 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2961 } else { | |
2962 parsed_enclosingmethod_attribute = true; | |
2963 } | |
2964 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2965 enclosing_method_class_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2966 enclosing_method_method_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2967 if (enclosing_method_class_index == 0) { |
0 | 2968 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
2969 } | |
2970 // Validate the constant pool indices and types | |
8719
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coleenp
parents:
8716
diff
changeset
|
2971 check_property(valid_klass_reference_at(enclosing_method_class_index), |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2972 "Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2973 if (enclosing_method_method_index != 0 && |
8719
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coleenp
parents:
8716
diff
changeset
|
2974 (!_cp->is_within_bounds(enclosing_method_method_index) || |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2975 !_cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
0 | 2976 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
2977 } | |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2978 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2979 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2980 if (parsed_bootstrap_methods_attribute) |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2981 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2982 parsed_bootstrap_methods_attribute = true; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
2983 parse_classfile_bootstrap_methods_attribute(attribute_length, CHECK); |
7457
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7187
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|
2984 } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
12201
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2985 if (runtime_visible_type_annotations != NULL) { |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
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12131
diff
changeset
|
2986 classfile_parse_error( |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
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12131
diff
changeset
|
2987 "Multiple RuntimeVisibleTypeAnnotations attributes in class file %s", CHECK); |
b6767a18b379
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hseigel
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12131
diff
changeset
|
2988 } |
7457
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diff
changeset
|
2989 runtime_visible_type_annotations_length = attribute_length; |
35431a769282
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changeset
|
2990 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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diff
changeset
|
2991 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
35431a769282
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stefank
parents:
7187
diff
changeset
|
2992 // No need for the VM to parse Type annotations |
35431a769282
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7187
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changeset
|
2993 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
12201
b6767a18b379
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hseigel
parents:
12131
diff
changeset
|
2994 } else if (tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
b6767a18b379
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hseigel
parents:
12131
diff
changeset
|
2995 if (runtime_invisible_type_annotations_exists) { |
b6767a18b379
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hseigel
parents:
12131
diff
changeset
|
2996 classfile_parse_error( |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2997 "Multiple RuntimeInvisibleTypeAnnotations attributes in class file %s", CHECK); |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2998 } else { |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
2999 runtime_invisible_type_annotations_exists = true; |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3000 } |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3001 if (PreserveAllAnnotations) { |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3002 runtime_invisible_type_annotations_length = attribute_length; |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3003 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3004 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3005 } |
b6767a18b379
8023167: JVM allows duplicate Runtime[In]VisibleTypeAnnotations attributes in ClassFile/field_info/method_info structures
hseigel
parents:
12131
diff
changeset
|
3006 cfs->skip_u1(attribute_length, CHECK); |
0 | 3007 } else { |
3008 // Unknown attribute | |
3009 cfs->skip_u1(attribute_length, CHECK); | |
3010 } | |
3011 } else { | |
3012 // Unknown attribute | |
3013 cfs->skip_u1(attribute_length, CHECK); | |
3014 } | |
3015 } | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3016 _annotations = assemble_annotations(runtime_visible_annotations, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3017 runtime_visible_annotations_length, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3018 runtime_invisible_annotations, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3019 runtime_invisible_annotations_length, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3020 CHECK); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3021 _type_annotations = assemble_annotations(runtime_visible_type_annotations, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3022 runtime_visible_type_annotations_length, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3023 runtime_invisible_type_annotations, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3024 runtime_invisible_type_annotations_length, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3025 CHECK); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3026 |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3027 if (parsed_innerclasses_attribute || parsed_enclosingmethod_attribute) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3028 u2 num_of_classes = parse_classfile_inner_classes_attribute( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3029 inner_classes_attribute_start, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3030 parsed_innerclasses_attribute, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3031 enclosing_method_class_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3032 enclosing_method_method_index, |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3033 CHECK); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3034 if (parsed_innerclasses_attribute &&_need_verify && _major_version >= JAVA_1_5_VERSION) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3035 guarantee_property( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3036 inner_classes_attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3037 "Wrong InnerClasses attribute length in class file %s", CHECK); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3038 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3039 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3040 |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3041 if (_max_bootstrap_specifier_index >= 0) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3042 guarantee_property(parsed_bootstrap_methods_attribute, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3043 "Missing BootstrapMethods attribute in class file %s", CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3044 } |
0 | 3045 } |
3046 | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3047 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3048 if (_synthetic_flag) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3049 k->set_is_synthetic(); |
12067
e22ee8e7ae62
8021948: Change InstanceKlass::_source_file_name and _generic_signature from Symbol* to constant pool indexes.
jiangli
parents:
11148
diff
changeset
|
3050 if (_sourcefile_index != 0) { |
e22ee8e7ae62
8021948: Change InstanceKlass::_source_file_name and _generic_signature from Symbol* to constant pool indexes.
jiangli
parents:
11148
diff
changeset
|
3051 k->set_source_file_name_index(_sourcefile_index); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3052 } |
12067
e22ee8e7ae62
8021948: Change InstanceKlass::_source_file_name and _generic_signature from Symbol* to constant pool indexes.
jiangli
parents:
11148
diff
changeset
|
3053 if (_generic_signature_index != 0) { |
e22ee8e7ae62
8021948: Change InstanceKlass::_source_file_name and _generic_signature from Symbol* to constant pool indexes.
jiangli
parents:
11148
diff
changeset
|
3054 k->set_generic_signature_index(_generic_signature_index); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3055 } |
6226 | 3056 if (_sde_buffer != NULL) { |
3057 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
3058 } | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3059 } |
0 | 3060 |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3061 // Transfer ownership of metadata allocated to the InstanceKlass. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3062 void ClassFileParser::apply_parsed_class_metadata( |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3063 instanceKlassHandle this_klass, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3064 int java_fields_count, TRAPS) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3065 // Assign annotations if needed |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3066 if (_annotations != NULL || _type_annotations != NULL || |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3067 _fields_annotations != NULL || _fields_type_annotations != NULL) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3068 Annotations* annotations = Annotations::allocate(_loader_data, CHECK); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3069 annotations->set_class_annotations(_annotations); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3070 annotations->set_class_type_annotations(_type_annotations); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3071 annotations->set_fields_annotations(_fields_annotations); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3072 annotations->set_fields_type_annotations(_fields_type_annotations); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3073 this_klass->set_annotations(annotations); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3074 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3075 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3076 _cp->set_pool_holder(this_klass()); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3077 this_klass->set_constants(_cp); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3078 this_klass->set_fields(_fields, java_fields_count); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3079 this_klass->set_methods(_methods); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3080 this_klass->set_inner_classes(_inner_classes); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3081 this_klass->set_local_interfaces(_local_interfaces); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3082 this_klass->set_transitive_interfaces(_transitive_interfaces); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3083 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3084 // Clear out these fields so they don't get deallocated by the destructor |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3085 clear_class_metadata(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3086 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3087 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3088 AnnotationArray* ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3089 int runtime_visible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3090 u1* runtime_invisible_annotations, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3091 int runtime_invisible_annotations_length, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3092 AnnotationArray* annotations = NULL; |
0 | 3093 if (runtime_visible_annotations != NULL || |
3094 runtime_invisible_annotations != NULL) { | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3095 annotations = MetadataFactory::new_array<u1>(_loader_data, |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3096 runtime_visible_annotations_length + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3097 runtime_invisible_annotations_length, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3098 CHECK_(annotations)); |
0 | 3099 if (runtime_visible_annotations != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3100 for (int i = 0; i < runtime_visible_annotations_length; i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3101 annotations->at_put(i, runtime_visible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3102 } |
0 | 3103 } |
3104 if (runtime_invisible_annotations != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3105 for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3106 int append = runtime_visible_annotations_length+i; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3107 annotations->at_put(append, runtime_invisible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3108 } |
0 | 3109 } |
3110 } | |
3111 return annotations; | |
3112 } | |
3113 | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3114 instanceKlassHandle ClassFileParser::parse_super_class(int super_class_index, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3115 TRAPS) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3116 instanceKlassHandle super_klass; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3117 if (super_class_index == 0) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3118 check_property(_class_name == vmSymbols::java_lang_Object(), |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3119 "Invalid superclass index %u in class file %s", |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3120 super_class_index, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3121 CHECK_NULL); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3122 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3123 check_property(valid_klass_reference_at(super_class_index), |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3124 "Invalid superclass index %u in class file %s", |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3125 super_class_index, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3126 CHECK_NULL); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3127 // The class name should be legal because it is checked when parsing constant pool. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3128 // However, make sure it is not an array type. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3129 bool is_array = false; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3130 if (_cp->tag_at(super_class_index).is_klass()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3131 super_klass = instanceKlassHandle(THREAD, _cp->resolved_klass_at(super_class_index)); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3132 if (_need_verify) |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3133 is_array = super_klass->oop_is_array(); |
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3134 } else if (_need_verify) { |
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3135 is_array = (_cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
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3136 } |
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3137 if (_need_verify) { |
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3138 guarantee_property(!is_array, |
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3139 "Bad superclass name in class file %s", CHECK_NULL); |
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3140 } |
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3141 } |
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3142 return super_klass; |
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3143 } |
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3144 |
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3145 |
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3146 // Values needed for oopmap and InstanceKlass creation |
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3147 class FieldLayoutInfo : public StackObj { |
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3148 public: |
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3149 int* nonstatic_oop_offsets; |
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3150 unsigned int* nonstatic_oop_counts; |
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3151 unsigned int nonstatic_oop_map_count; |
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3152 unsigned int total_oop_map_count; |
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3153 int instance_size; |
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3154 int nonstatic_field_size; |
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3155 int static_field_size; |
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3156 bool has_nonstatic_fields; |
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3157 }; |
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3158 |
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3159 // Layout fields and fill in FieldLayoutInfo. Could use more refactoring! |
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3160 void ClassFileParser::layout_fields(Handle class_loader, |
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3161 FieldAllocationCount* fac, |
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3162 ClassAnnotationCollector* parsed_annotations, |
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3163 FieldLayoutInfo* info, |
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3164 TRAPS) { |
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3165 |
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3166 // Field size and offset computation |
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3167 int nonstatic_field_size = _super_klass() == NULL ? 0 : _super_klass()->nonstatic_field_size(); |
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3168 int next_static_oop_offset; |
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3169 int next_static_double_offset; |
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3170 int next_static_word_offset; |
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3171 int next_static_short_offset; |
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3172 int next_static_byte_offset; |
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3173 int next_nonstatic_oop_offset; |
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3174 int next_nonstatic_double_offset; |
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3175 int next_nonstatic_word_offset; |
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3176 int next_nonstatic_short_offset; |
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3177 int next_nonstatic_byte_offset; |
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3178 int first_nonstatic_oop_offset; |
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3179 int next_nonstatic_field_offset; |
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3180 int next_nonstatic_padded_offset; |
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3181 |
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3182 // Count the contended fields by type. |
10314 | 3183 // |
3184 // We ignore static fields, because @Contended is not supported for them. | |
3185 // The layout code below will also ignore the static fields. | |
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3186 int nonstatic_contended_count = 0; |
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3187 FieldAllocationCount fac_contended; |
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3188 for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
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3189 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
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3190 if (fs.is_contended()) { |
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3191 fac_contended.count[atype]++; |
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3192 if (!fs.access_flags().is_static()) { |
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3193 nonstatic_contended_count++; |
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3194 } |
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3195 } |
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3196 } |
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3197 |
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3198 |
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3199 // Calculate the starting byte offsets |
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3200 next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
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3201 next_static_double_offset = next_static_oop_offset + |
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3202 ((fac->count[STATIC_OOP]) * heapOopSize); |
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3203 if ( fac->count[STATIC_DOUBLE] && |
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3204 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
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3205 Universe::field_type_should_be_aligned(T_LONG)) ) { |
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3206 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); |
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3207 } |
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3208 |
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3209 next_static_word_offset = next_static_double_offset + |
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3210 ((fac->count[STATIC_DOUBLE]) * BytesPerLong); |
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3211 next_static_short_offset = next_static_word_offset + |
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3212 ((fac->count[STATIC_WORD]) * BytesPerInt); |
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3213 next_static_byte_offset = next_static_short_offset + |
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3214 ((fac->count[STATIC_SHORT]) * BytesPerShort); |
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3215 |
10314 | 3216 int nonstatic_fields_start = instanceOopDesc::base_offset_in_bytes() + |
3217 nonstatic_field_size * heapOopSize; | |
3218 | |
3219 next_nonstatic_field_offset = nonstatic_fields_start; | |
3220 | |
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3221 bool is_contended_class = parsed_annotations->is_contended(); |
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3222 |
10314 | 3223 // Class is contended, pad before all the fields |
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3224 if (is_contended_class) { |
10314 | 3225 next_nonstatic_field_offset += ContendedPaddingWidth; |
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3226 } |
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3227 |
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3228 // Compute the non-contended fields count. |
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3229 // The packing code below relies on these counts to determine if some field |
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3230 // can be squeezed into the alignment gap. Contended fields are obviously |
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3231 // exempt from that. |
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3232 unsigned int nonstatic_double_count = fac->count[NONSTATIC_DOUBLE] - fac_contended.count[NONSTATIC_DOUBLE]; |
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3233 unsigned int nonstatic_word_count = fac->count[NONSTATIC_WORD] - fac_contended.count[NONSTATIC_WORD]; |
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3234 unsigned int nonstatic_short_count = fac->count[NONSTATIC_SHORT] - fac_contended.count[NONSTATIC_SHORT]; |
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3235 unsigned int nonstatic_byte_count = fac->count[NONSTATIC_BYTE] - fac_contended.count[NONSTATIC_BYTE]; |
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3236 unsigned int nonstatic_oop_count = fac->count[NONSTATIC_OOP] - fac_contended.count[NONSTATIC_OOP]; |
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3237 |
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3238 // Total non-static fields count, including every contended field |
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3239 unsigned int nonstatic_fields_count = fac->count[NONSTATIC_DOUBLE] + fac->count[NONSTATIC_WORD] + |
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3240 fac->count[NONSTATIC_SHORT] + fac->count[NONSTATIC_BYTE] + |
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3241 fac->count[NONSTATIC_OOP]; |
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3242 |
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3243 bool super_has_nonstatic_fields = |
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3244 (_super_klass() != NULL && _super_klass->has_nonstatic_fields()); |
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3245 bool has_nonstatic_fields = super_has_nonstatic_fields || (nonstatic_fields_count != 0); |
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3246 |
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3247 |
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3248 // Prepare list of oops for oop map generation. |
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3249 // |
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3250 // "offset" and "count" lists are describing the set of contiguous oop |
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3251 // regions. offset[i] is the start of the i-th region, which then has |
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3252 // count[i] oops following. Before we know how many regions are required, |
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3253 // we pessimistically allocate the maps to fit all the oops into the |
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3254 // distinct regions. |
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3255 // |
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3256 // TODO: We add +1 to always allocate non-zero resource arrays; we need |
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3257 // to figure out if we still need to do this. |
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3258 int* nonstatic_oop_offsets; |
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3259 unsigned int* nonstatic_oop_counts; |
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3260 unsigned int nonstatic_oop_map_count = 0; |
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3261 unsigned int max_nonstatic_oop_maps = fac->count[NONSTATIC_OOP] + 1; |
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3262 |
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3263 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( |
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3264 THREAD, int, max_nonstatic_oop_maps); |
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3265 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
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3266 THREAD, unsigned int, max_nonstatic_oop_maps); |
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3267 |
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3268 first_nonstatic_oop_offset = 0; // will be set for first oop field |
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3269 |
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3270 bool compact_fields = CompactFields; |
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3271 int allocation_style = FieldsAllocationStyle; |
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3272 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
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3273 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
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3274 allocation_style = 1; // Optimistic |
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3275 } |
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3276 |
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3277 // The next classes have predefined hard-coded fields offsets |
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3278 // (see in JavaClasses::compute_hard_coded_offsets()). |
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3279 // Use default fields allocation order for them. |
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3280 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && |
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3281 (_class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
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3282 _class_name == vmSymbols::java_lang_Class() || |
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3283 _class_name == vmSymbols::java_lang_ClassLoader() || |
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3284 _class_name == vmSymbols::java_lang_ref_Reference() || |
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3285 _class_name == vmSymbols::java_lang_ref_SoftReference() || |
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3286 _class_name == vmSymbols::java_lang_StackTraceElement() || |
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3287 _class_name == vmSymbols::java_lang_String() || |
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3288 _class_name == vmSymbols::java_lang_Throwable() || |
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3289 _class_name == vmSymbols::java_lang_Boolean() || |
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3290 _class_name == vmSymbols::java_lang_Character() || |
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3291 _class_name == vmSymbols::java_lang_Float() || |
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3292 _class_name == vmSymbols::java_lang_Double() || |
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3293 _class_name == vmSymbols::java_lang_Byte() || |
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3294 _class_name == vmSymbols::java_lang_Short() || |
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3295 _class_name == vmSymbols::java_lang_Integer() || |
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3296 _class_name == vmSymbols::java_lang_Long())) { |
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3297 allocation_style = 0; // Allocate oops first |
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3298 compact_fields = false; // Don't compact fields |
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3299 } |
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3300 |
10314 | 3301 // Rearrange fields for a given allocation style |
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3302 if( allocation_style == 0 ) { |
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3303 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes, padded fields |
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3304 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3305 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3306 (nonstatic_oop_count * heapOopSize); |
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3307 } else if( allocation_style == 1 ) { |
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3308 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops, padded fields |
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3309 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3310 } else if( allocation_style == 2 ) { |
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3311 // Fields allocation: oops fields in super and sub classes are together. |
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3312 if( nonstatic_field_size > 0 && _super_klass() != NULL && |
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3313 _super_klass->nonstatic_oop_map_size() > 0 ) { |
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3314 unsigned int map_count = _super_klass->nonstatic_oop_map_count(); |
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3315 OopMapBlock* first_map = _super_klass->start_of_nonstatic_oop_maps(); |
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3316 OopMapBlock* last_map = first_map + map_count - 1; |
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3317 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
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3318 if (next_offset == next_nonstatic_field_offset) { |
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3319 allocation_style = 0; // allocate oops first |
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3320 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3321 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3322 (nonstatic_oop_count * heapOopSize); |
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3323 } |
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3324 } |
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3325 if( allocation_style == 2 ) { |
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3326 allocation_style = 1; // allocate oops last |
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3327 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3328 } |
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3329 } else { |
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3330 ShouldNotReachHere(); |
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3331 } |
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3332 |
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3333 int nonstatic_oop_space_count = 0; |
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3334 int nonstatic_word_space_count = 0; |
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3335 int nonstatic_short_space_count = 0; |
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3336 int nonstatic_byte_space_count = 0; |
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3337 int nonstatic_oop_space_offset; |
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3338 int nonstatic_word_space_offset; |
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3339 int nonstatic_short_space_offset; |
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3340 int nonstatic_byte_space_offset; |
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3341 |
10314 | 3342 // Try to squeeze some of the fields into the gaps due to |
3343 // long/double alignment. | |
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3344 if( nonstatic_double_count > 0 ) { |
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3345 int offset = next_nonstatic_double_offset; |
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3346 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
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3347 if( compact_fields && offset != next_nonstatic_double_offset ) { |
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3348 // Allocate available fields into the gap before double field. |
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3349 int length = next_nonstatic_double_offset - offset; |
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3350 assert(length == BytesPerInt, ""); |
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3351 nonstatic_word_space_offset = offset; |
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3352 if( nonstatic_word_count > 0 ) { |
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3353 nonstatic_word_count -= 1; |
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3354 nonstatic_word_space_count = 1; // Only one will fit |
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3355 length -= BytesPerInt; |
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3356 offset += BytesPerInt; |
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3357 } |
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3358 nonstatic_short_space_offset = offset; |
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3359 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { |
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3360 nonstatic_short_count -= 1; |
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3361 nonstatic_short_space_count += 1; |
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3362 length -= BytesPerShort; |
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3363 offset += BytesPerShort; |
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3364 } |
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3365 nonstatic_byte_space_offset = offset; |
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3366 while( length > 0 && nonstatic_byte_count > 0 ) { |
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3367 nonstatic_byte_count -= 1; |
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3368 nonstatic_byte_space_count += 1; |
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3369 length -= 1; |
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3370 } |
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3371 // Allocate oop field in the gap if there are no other fields for that. |
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3372 nonstatic_oop_space_offset = offset; |
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3373 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
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3374 allocation_style != 0 ) { // when oop fields not first |
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3375 nonstatic_oop_count -= 1; |
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3376 nonstatic_oop_space_count = 1; // Only one will fit |
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3377 length -= heapOopSize; |
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3378 offset += heapOopSize; |
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coleenp
parents:
8716
diff
changeset
|
3379 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3380 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3381 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3382 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3383 next_nonstatic_word_offset = next_nonstatic_double_offset + |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3384 (nonstatic_double_count * BytesPerLong); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3385 next_nonstatic_short_offset = next_nonstatic_word_offset + |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3386 (nonstatic_word_count * BytesPerInt); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3387 next_nonstatic_byte_offset = next_nonstatic_short_offset + |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3388 (nonstatic_short_count * BytesPerShort); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3389 next_nonstatic_padded_offset = next_nonstatic_byte_offset + |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3390 nonstatic_byte_count; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3391 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3392 // let oops jump before padding with this allocation style |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3393 if( allocation_style == 1 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3394 next_nonstatic_oop_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3395 if( nonstatic_oop_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3396 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3397 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3398 next_nonstatic_padded_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3399 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3400 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3401 // Iterate over fields again and compute correct offsets. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3402 // The field allocation type was temporarily stored in the offset slot. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3403 // oop fields are located before non-oop fields (static and non-static). |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3404 for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3405 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3406 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3407 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3408 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3409 // contended instance fields are handled below |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3410 if (fs.is_contended() && !fs.access_flags().is_static()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3411 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3412 int real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3413 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3414 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3415 // pack the rest of the fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3416 switch (atype) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3417 case STATIC_OOP: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3418 real_offset = next_static_oop_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3419 next_static_oop_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3420 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3421 case STATIC_BYTE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3422 real_offset = next_static_byte_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3423 next_static_byte_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3424 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3425 case STATIC_SHORT: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3426 real_offset = next_static_short_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3427 next_static_short_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3428 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3429 case STATIC_WORD: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3430 real_offset = next_static_word_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3431 next_static_word_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3432 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3433 case STATIC_DOUBLE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3434 real_offset = next_static_double_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3435 next_static_double_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3436 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3437 case NONSTATIC_OOP: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3438 if( nonstatic_oop_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3439 real_offset = nonstatic_oop_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3440 nonstatic_oop_space_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3441 nonstatic_oop_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3442 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3443 real_offset = next_nonstatic_oop_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3444 next_nonstatic_oop_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3445 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3446 // Update oop maps |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3447 if( nonstatic_oop_map_count > 0 && |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3448 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3449 real_offset - |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3450 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3451 heapOopSize ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3452 // Extend current oop map |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3453 assert(nonstatic_oop_map_count - 1 < max_nonstatic_oop_maps, "range check"); |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3454 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3455 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3456 // Create new oop map |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3457 assert(nonstatic_oop_map_count < max_nonstatic_oop_maps, "range check"); |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3458 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3459 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3460 nonstatic_oop_map_count += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3461 if( first_nonstatic_oop_offset == 0 ) { // Undefined |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3462 first_nonstatic_oop_offset = real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3463 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3464 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3465 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3466 case NONSTATIC_BYTE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3467 if( nonstatic_byte_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3468 real_offset = nonstatic_byte_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3469 nonstatic_byte_space_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3470 nonstatic_byte_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3471 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3472 real_offset = next_nonstatic_byte_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3473 next_nonstatic_byte_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3474 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3475 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3476 case NONSTATIC_SHORT: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3477 if( nonstatic_short_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3478 real_offset = nonstatic_short_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3479 nonstatic_short_space_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3480 nonstatic_short_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3481 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3482 real_offset = next_nonstatic_short_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3483 next_nonstatic_short_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3484 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3485 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3486 case NONSTATIC_WORD: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3487 if( nonstatic_word_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3488 real_offset = nonstatic_word_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3489 nonstatic_word_space_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3490 nonstatic_word_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3491 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3492 real_offset = next_nonstatic_word_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3493 next_nonstatic_word_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3494 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3495 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3496 case NONSTATIC_DOUBLE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3497 real_offset = next_nonstatic_double_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3498 next_nonstatic_double_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3499 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3500 default: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3501 ShouldNotReachHere(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3502 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3503 fs.set_offset(real_offset); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3504 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3505 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3506 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3507 // Handle the contended cases. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3508 // |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3509 // Each contended field should not intersect the cache line with another contended field. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3510 // In the absence of alignment information, we end up with pessimistically separating |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3511 // the fields with full-width padding. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3512 // |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3513 // Additionally, this should not break alignment for the fields, so we round the alignment up |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3514 // for each field. |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3515 if (nonstatic_contended_count > 0) { |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3516 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3517 // if there is at least one contended field, we need to have pre-padding for them |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3518 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3519 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3520 // collect all contended groups |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3521 BitMap bm(_cp->size()); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3522 for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3523 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3524 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3525 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3526 if (fs.is_contended()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3527 bm.set_bit(fs.contended_group()); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3528 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3529 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3530 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3531 int current_group = -1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3532 while ((current_group = (int)bm.get_next_one_offset(current_group + 1)) != (int)bm.size()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3533 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3534 for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3535 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3536 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3537 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3538 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3539 // skip non-contended fields and fields from different group |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3540 if (!fs.is_contended() || (fs.contended_group() != current_group)) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3541 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3542 // handle statics below |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3543 if (fs.access_flags().is_static()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3544 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3545 int real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3546 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3547 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3548 switch (atype) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3549 case NONSTATIC_BYTE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3550 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, 1); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3551 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3552 next_nonstatic_padded_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3553 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3554 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3555 case NONSTATIC_SHORT: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3556 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerShort); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3557 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3558 next_nonstatic_padded_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3559 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3560 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3561 case NONSTATIC_WORD: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3562 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerInt); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3563 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3564 next_nonstatic_padded_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3565 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3566 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3567 case NONSTATIC_DOUBLE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3568 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerLong); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3569 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3570 next_nonstatic_padded_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3571 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3572 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3573 case NONSTATIC_OOP: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3574 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, heapOopSize); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3575 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3576 next_nonstatic_padded_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3577 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3578 // Create new oop map |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3579 assert(nonstatic_oop_map_count < max_nonstatic_oop_maps, "range check"); |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3580 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3581 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3582 nonstatic_oop_map_count += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3583 if( first_nonstatic_oop_offset == 0 ) { // Undefined |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3584 first_nonstatic_oop_offset = real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3585 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3586 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3587 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3588 default: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3589 ShouldNotReachHere(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3590 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3591 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3592 if (fs.contended_group() == 0) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3593 // Contended group defines the equivalence class over the fields: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3594 // the fields within the same contended group are not inter-padded. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3595 // The only exception is default group, which does not incur the |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3596 // equivalence, and so requires intra-padding. |
10314 | 3597 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3598 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3599 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3600 fs.set_offset(real_offset); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3601 } // for |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3602 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3603 // Start laying out the next group. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3604 // Note that this will effectively pad the last group in the back; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3605 // this is expected to alleviate memory contention effects for |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3606 // subclass fields and/or adjacent object. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3607 // If this was the default group, the padding is already in place. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3608 if (current_group != 0) { |
10314 | 3609 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3610 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3611 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3612 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3613 // handle static fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3614 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3615 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3616 // Entire class is contended, pad in the back. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3617 // This helps to alleviate memory contention effects for subclass fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3618 // and/or adjacent object. |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3619 if (is_contended_class) { |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3620 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3621 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3622 |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3623 int notaligned_nonstatic_fields_end = next_nonstatic_padded_offset; |
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8015270: @Contended: fix multiple issues in the layout code
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diff
changeset
|
3624 |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
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parents:
10343
diff
changeset
|
3625 int nonstatic_fields_end = align_size_up(notaligned_nonstatic_fields_end, heapOopSize); |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3626 int instance_end = align_size_up(notaligned_nonstatic_fields_end, wordSize); |
10314 | 3627 int static_fields_end = align_size_up(next_static_byte_offset, wordSize); |
3628 | |
3629 int static_field_size = (static_fields_end - | |
3630 InstanceMirrorKlass::offset_of_static_fields()) / wordSize; | |
3631 nonstatic_field_size = nonstatic_field_size + | |
3632 (nonstatic_fields_end - nonstatic_fields_start) / heapOopSize; | |
3633 | |
3634 int instance_size = align_object_size(instance_end / wordSize); | |
8719
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3635 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3636 assert(instance_size == align_object_size(align_size_up( |
10303
205dd30230e1
8012939: @Contended doesn't work correctly with inheritance
shade
parents:
10269
diff
changeset
|
3637 (instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3638 wordSize) / wordSize), "consistent layout helper value"); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3639 |
10348
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3640 // Invariant: nonstatic_field end/start should only change if there are |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3641 // nonstatic fields in the class, or if the class is contended. We compare |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3642 // against the non-aligned value, so that end alignment will not fail the |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3643 // assert without actually having the fields. |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3644 assert((notaligned_nonstatic_fields_end == nonstatic_fields_start) || |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3645 is_contended_class || |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3646 (nonstatic_fields_count > 0), "double-check nonstatic start/end"); |
3970971c91e0
8015270: @Contended: fix multiple issues in the layout code
shade
parents:
10343
diff
changeset
|
3647 |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3648 // Number of non-static oop map blocks allocated at end of klass. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3649 const unsigned int total_oop_map_count = |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3650 compute_oop_map_count(_super_klass, nonstatic_oop_map_count, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3651 first_nonstatic_oop_offset); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3652 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3653 #ifndef PRODUCT |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3654 if (PrintFieldLayout) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3655 print_field_layout(_class_name, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3656 _fields, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3657 _cp, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3658 instance_size, |
10314 | 3659 nonstatic_fields_start, |
3660 nonstatic_fields_end, | |
3661 static_fields_end); | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3662 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3663 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3664 #endif |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3665 // Pass back information needed for InstanceKlass creation |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3666 info->nonstatic_oop_offsets = nonstatic_oop_offsets; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3667 info->nonstatic_oop_counts = nonstatic_oop_counts; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3668 info->nonstatic_oop_map_count = nonstatic_oop_map_count; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3669 info->total_oop_map_count = total_oop_map_count; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3670 info->instance_size = instance_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3671 info->static_field_size = static_field_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3672 info->nonstatic_field_size = nonstatic_field_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3673 info->has_nonstatic_fields = has_nonstatic_fields; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3674 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3675 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3676 |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3677 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3678 ClassLoaderData* loader_data, |
0 | 3679 Handle protection_domain, |
710 | 3680 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3681 GrowableArray<Handle>* cp_patches, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3682 TempNewSymbol& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
3683 bool verify, |
0 | 3684 TRAPS) { |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
3685 |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3686 // When a retransformable agent is attached, JVMTI caches the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3687 // class bytes that existed before the first retransformation. |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3688 // If RedefineClasses() was used before the retransformable |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3689 // agent attached, then the cached class bytes may not be the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3690 // original class bytes. |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
10405
diff
changeset
|
3691 JvmtiCachedClassFileData *cached_class_file = NULL; |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3692 Handle class_loader(THREAD, loader_data->class_loader()); |
6934 | 3693 bool has_default_methods = false; |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
3694 bool declares_default_methods = false; |
6934 | 3695 ResourceMark rm(THREAD); |
0 | 3696 |
3697 ClassFileStream* cfs = stream(); | |
3698 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3699 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3700 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3701 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3702 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3703 ClassLoader::perf_class_parse_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3704 NULL, |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3705 jt->get_thread_stat()->perf_recursion_counts_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3706 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3707 PerfClassTraceTime::PARSE_CLASS); |
0 | 3708 |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3709 init_parsed_class_attributes(loader_data); |
0 | 3710 |
3711 if (JvmtiExport::should_post_class_file_load_hook()) { | |
4751
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3712 // Get the cached class file bytes (if any) from the class that |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3713 // is being redefined or retransformed. We use jvmti_thread_state() |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3714 // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3715 // a JvmtiThreadState any earlier than necessary. This will help |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3716 // avoid the bug described by 7126851. |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3717 JvmtiThreadState *state = jt->jvmti_thread_state(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3718 if (state != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3719 KlassHandle *h_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3720 state->get_class_being_redefined(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3721 if (h_class_being_redefined != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3722 instanceKlassHandle ikh_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3723 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
10405
diff
changeset
|
3724 cached_class_file = ikh_class_being_redefined->get_cached_class_file(); |
4751
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3725 } |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3726 } |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3727 |
0 | 3728 unsigned char* ptr = cfs->buffer(); |
3729 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
3730 | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3731 JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
10405
diff
changeset
|
3732 &ptr, &end_ptr, &cached_class_file); |
0 | 3733 |
3734 if (ptr != cfs->buffer()) { | |
3735 // JVMTI agent has modified class file data. | |
3736 // Set new class file stream using JVMTI agent modified | |
3737 // class file data. | |
3738 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
3739 set_stream(cfs); | |
3740 } | |
3741 } | |
3742 | |
710 | 3743 _host_klass = host_klass; |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3744 _cp_patches = cp_patches; |
0 | 3745 |
3746 instanceKlassHandle nullHandle; | |
3747 | |
3748 // Figure out whether we can skip format checking (matching classic VM behavior) | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3749 if (DumpSharedSpaces) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3750 // verify == true means it's a 'remote' class (i.e., non-boot class) |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3751 // Verification decision is based on BytecodeVerificationRemote flag |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3752 // for those classes. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3753 _need_verify = (verify) ? BytecodeVerificationRemote : |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3754 BytecodeVerificationLocal; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3755 } else { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3756 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3757 } |
0 | 3758 |
3759 // Set the verify flag in stream | |
3760 cfs->set_verify(_need_verify); | |
3761 | |
3762 // Save the class file name for easier error message printing. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3763 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
0 | 3764 |
3765 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
3766 // Magic value | |
3767 u4 magic = cfs->get_u4_fast(); | |
3768 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
3769 "Incompatible magic value %u in class file %s", | |
3770 magic, CHECK_(nullHandle)); | |
3771 | |
3772 // Version numbers | |
3773 u2 minor_version = cfs->get_u2_fast(); | |
3774 u2 major_version = cfs->get_u2_fast(); | |
3775 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3776 if (DumpSharedSpaces && major_version < JAVA_1_5_VERSION) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3777 ResourceMark rm; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3778 warning("Pre JDK 1.5 class not supported by CDS: %u.%u %s", |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3779 major_version, minor_version, name->as_C_string()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3780 Exceptions::fthrow( |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3781 THREAD_AND_LOCATION, |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3782 vmSymbols::java_lang_UnsupportedClassVersionError(), |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3783 "Unsupported major.minor version for dump time %u.%u", |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3784 major_version, |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3785 minor_version); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3786 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3787 |
0 | 3788 // Check version numbers - we check this even with verifier off |
3789 if (!is_supported_version(major_version, minor_version)) { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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|
3790 if (name == NULL) { |
0 | 3791 Exceptions::fthrow( |
3792 THREAD_AND_LOCATION, | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
3793 vmSymbols::java_lang_UnsupportedClassVersionError(), |
17879
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
parents:
17646
diff
changeset
|
3794 "Unsupported class file version %u.%u, " |
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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diff
changeset
|
3795 "this version of the Java Runtime only recognizes class file versions up to %u.%u", |
0 | 3796 major_version, |
17879
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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17646
diff
changeset
|
3797 minor_version, |
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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17646
diff
changeset
|
3798 JAVA_MAX_SUPPORTED_VERSION, |
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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diff
changeset
|
3799 JAVA_MAX_SUPPORTED_MINOR_VERSION); |
0 | 3800 } else { |
3801 ResourceMark rm(THREAD); | |
3802 Exceptions::fthrow( | |
3803 THREAD_AND_LOCATION, | |
2177
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|
3804 vmSymbols::java_lang_UnsupportedClassVersionError(), |
17879
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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diff
changeset
|
3805 "%s has been compiled by a more recent version of the Java Runtime (class file version %u.%u), " |
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
parents:
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diff
changeset
|
3806 "this version of the Java Runtime only recognizes class file versions up to %u.%u", |
0 | 3807 name->as_C_string(), |
3808 major_version, | |
17879
d55853ba088b
8016644: Improve UnsupportedClassVersionError message
ctornqvi
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17646
diff
changeset
|
3809 minor_version, |
d55853ba088b
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ctornqvi
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17646
diff
changeset
|
3810 JAVA_MAX_SUPPORTED_VERSION, |
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changeset
|
3811 JAVA_MAX_SUPPORTED_MINOR_VERSION); |
0 | 3812 } |
3813 return nullHandle; | |
3814 } | |
3815 | |
3816 _major_version = major_version; | |
3817 _minor_version = minor_version; | |
3818 | |
3819 | |
3820 // Check if verification needs to be relaxed for this class file | |
3821 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
3822 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
3823 | |
3824 // Constant pool | |
8719
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|
3825 constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle)); |
2177
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3826 |
0 | 3827 int cp_size = cp->length(); |
3828 | |
3829 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
3830 | |
3831 // Access flags | |
3832 AccessFlags access_flags; | |
3833 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
3834 | |
3835 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
3836 // Set abstract bit for old class files for backward compatibility | |
3837 flags |= JVM_ACC_ABSTRACT; | |
3838 } | |
3839 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
3840 access_flags.set_flags(flags); | |
3841 | |
3842 // This class and superclass | |
3843 u2 this_class_index = cfs->get_u2_fast(); | |
3844 check_property( | |
3845 valid_cp_range(this_class_index, cp_size) && | |
3846 cp->tag_at(this_class_index).is_unresolved_klass(), | |
3847 "Invalid this class index %u in constant pool in class file %s", | |
3848 this_class_index, CHECK_(nullHandle)); | |
3849 | |
2177
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3850 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
3582bf76420e
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|
3851 assert(class_name != NULL, "class_name can't be null"); |
0 | 3852 |
3853 // It's important to set parsed_name *before* resolving the super class. | |
3854 // (it's used for cleanup by the caller if parsing fails) | |
3855 parsed_name = class_name; | |
2177
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3856 // parsed_name is returned and can be used if there's an error, so add to |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
3857 // its reference count. Caller will decrement the refcount. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
3858 parsed_name->increment_refcount(); |
0 | 3859 |
3860 // Update _class_name which could be null previously to be class_name | |
3861 _class_name = class_name; | |
3862 | |
3863 // Don't need to check whether this class name is legal or not. | |
3864 // It has been checked when constant pool is parsed. | |
3865 // However, make sure it is not an array type. | |
3866 if (_need_verify) { | |
3867 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
3868 "Bad class name in class file %s", | |
3869 CHECK_(nullHandle)); | |
3870 } | |
3871 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
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|
3872 Klass* preserve_this_klass; // for storing result across HandleMark |
0 | 3873 |
3874 // release all handles when parsing is done | |
3875 { HandleMark hm(THREAD); | |
3876 | |
3877 // Checks if name in class file matches requested name | |
2177
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3878 if (name != NULL && class_name != name) { |
0 | 3879 ResourceMark rm(THREAD); |
3880 Exceptions::fthrow( | |
3881 THREAD_AND_LOCATION, | |
2177
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|
3882 vmSymbols::java_lang_NoClassDefFoundError(), |
0 | 3883 "%s (wrong name: %s)", |
3884 name->as_C_string(), | |
3885 class_name->as_C_string() | |
3886 ); | |
3887 return nullHandle; | |
3888 } | |
3889 | |
3890 if (TraceClassLoadingPreorder) { | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9083
diff
changeset
|
3891 tty->print("[Loading %s", (name != NULL) ? name->as_klass_external_name() : "NoName"); |
0 | 3892 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
3893 tty->print_cr("]"); | |
3894 } | |
20375
6e0cb14ce59b
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diff
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|
3895 #if INCLUDE_CDS |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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diff
changeset
|
3896 if (DumpLoadedClassList != NULL && cfs->source() != NULL && classlist_file->is_open()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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diff
changeset
|
3897 // Only dump the classes that can be stored into CDS archive |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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diff
changeset
|
3898 if (SystemDictionaryShared::is_sharing_possible(loader_data)) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
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parents:
20353
diff
changeset
|
3899 if (name != NULL) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3900 ResourceMark rm(THREAD); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
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diff
changeset
|
3901 classlist_file->print_cr("%s", name->as_C_string()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20353
diff
changeset
|
3902 classlist_file->flush(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
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diff
changeset
|
3903 } |
6e0cb14ce59b
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diff
changeset
|
3904 } |
6e0cb14ce59b
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diff
changeset
|
3905 } |
6e0cb14ce59b
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diff
changeset
|
3906 #endif |
0 | 3907 |
3908 u2 super_class_index = cfs->get_u2_fast(); | |
8719
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|
3909 instanceKlassHandle super_klass = parse_super_class(super_class_index, |
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|
3910 CHECK_NULL); |
0 | 3911 |
3912 // Interfaces | |
3913 u2 itfs_len = cfs->get_u2_fast(); | |
8719
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|
3914 Array<Klass*>* local_interfaces = |
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|
3915 parse_interfaces(itfs_len, protection_domain, _class_name, |
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diff
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|
3916 &has_default_methods, CHECK_(nullHandle)); |
0 | 3917 |
4744
cd5d8cafcc84
7123315: instanceKlass::_static_oop_field_count and instanceKlass::_java_fields_count should be u2 type.
jiangli
parents:
3938
diff
changeset
|
3918 u2 java_fields_count = 0; |
0 | 3919 // Fields (offsets are filled in later) |
3938 | 3920 FieldAllocationCount fac; |
8719
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|
3921 Array<u2>* fields = parse_fields(class_name, |
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|
3922 access_flags.is_interface(), |
c8b31b461e1a
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|
3923 &fac, &java_fields_count, |
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diff
changeset
|
3924 CHECK_(nullHandle)); |
0 | 3925 // Methods |
3926 bool has_final_method = false; | |
3927 AccessFlags promoted_flags; | |
3928 promoted_flags.set_flags(0); | |
8719
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diff
changeset
|
3929 Array<Method*>* methods = parse_methods(access_flags.is_interface(), |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3930 &promoted_flags, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3931 &has_final_method, |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
3932 &declares_default_methods, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3933 CHECK_(nullHandle)); |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
3934 if (declares_default_methods) { |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
3935 has_default_methods = true; |
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
3936 } |
0 | 3937 |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3938 // Additional attributes |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3939 ClassAnnotationCollector parsed_annotations; |
8719
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coleenp
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diff
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|
3940 parse_classfile_attributes(&parsed_annotations, CHECK_(nullHandle)); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3941 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3942 // Make sure this is the end of class file stream |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3943 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3944 |
0 | 3945 // We check super class after class file is parsed and format is checked |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3946 if (super_class_index > 0 && super_klass.is_null()) { |
2177
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diff
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|
3947 Symbol* sk = cp->klass_name_at(super_class_index); |
0 | 3948 if (access_flags.is_interface()) { |
3949 // Before attempting to resolve the superclass, check for class format | |
3950 // errors not checked yet. | |
2177
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diff
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|
3951 guarantee_property(sk == vmSymbols::java_lang_Object(), |
0 | 3952 "Interfaces must have java.lang.Object as superclass in class file %s", |
3953 CHECK_(nullHandle)); | |
3954 } | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3955 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3956 class_loader, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3957 protection_domain, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3958 true, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3959 CHECK_(nullHandle)); |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3960 |
0 | 3961 KlassHandle kh (THREAD, k); |
3962 super_klass = instanceKlassHandle(THREAD, kh()); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3963 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
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changeset
|
3964 if (super_klass.not_null()) { |
6934 | 3965 |
3966 if (super_klass->has_default_methods()) { | |
3967 has_default_methods = true; | |
3968 } | |
3969 | |
0 | 3970 if (super_klass->is_interface()) { |
3971 ResourceMark rm(THREAD); | |
3972 Exceptions::fthrow( | |
3973 THREAD_AND_LOCATION, | |
2177
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|
3974 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 3975 "class %s has interface %s as super class", |
3976 class_name->as_klass_external_name(), | |
3977 super_klass->external_name() | |
3978 ); | |
3979 return nullHandle; | |
3980 } | |
3981 // Make sure super class is not final | |
3982 if (super_klass->is_final()) { | |
3983 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
3984 } | |
3985 } | |
3986 | |
8719
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|
3987 // save super klass for error handling. |
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coleenp
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diff
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|
3988 _super_klass = super_klass; |
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diff
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|
3989 |
0 | 3990 // Compute the transitive list of all unique interfaces implemented by this class |
8719
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|
3991 _transitive_interfaces = |
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coleenp
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8716
diff
changeset
|
3992 compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); |
0 | 3993 |
3994 // sort methods | |
8719
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diff
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|
3995 intArray* method_ordering = sort_methods(methods); |
0 | 3996 |
3997 // promote flags from parse_methods() to the klass' flags | |
3998 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
3999 | |
4000 // Size of Java vtable (in words) | |
4001 int vtable_size = 0; | |
4002 int itable_size = 0; | |
4003 int num_miranda_methods = 0; | |
4004 | |
6934 | 4005 GrowableArray<Method*> all_mirandas(20); |
4006 | |
4007 klassVtable::compute_vtable_size_and_num_mirandas( | |
4008 &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, | |
4009 access_flags, class_loader, class_name, local_interfaces, | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
4010 CHECK_(nullHandle)); |
0 | 4011 |
4012 // Size of Java itable (in words) | |
8719
c8b31b461e1a
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coleenp
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|
4013 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(_transitive_interfaces); |
c8b31b461e1a
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coleenp
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|
4014 |
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diff
changeset
|
4015 FieldLayoutInfo info; |
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diff
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|
4016 layout_fields(class_loader, &fac, &parsed_annotations, &info, CHECK_NULL); |
c8b31b461e1a
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coleenp
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diff
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|
4017 |
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diff
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|
4018 int total_oop_map_size2 = |
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4019 InstanceKlass::nonstatic_oop_map_size(info.total_oop_map_count); |
c8b31b461e1a
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coleenp
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diff
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|
4020 |
0 | 4021 // Compute reference type |
4022 ReferenceType rt; | |
4023 if (super_klass() == NULL) { | |
4024 rt = REF_NONE; | |
4025 } else { | |
4026 rt = super_klass->reference_type(); | |
4027 } | |
4028 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4029 // We can now create the basic Klass* for this klass |
8719
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|
4030 _klass = InstanceKlass::allocate_instance_klass(loader_data, |
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|
4031 vtable_size, |
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diff
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|
4032 itable_size, |
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|
4033 info.static_field_size, |
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|
4034 total_oop_map_size2, |
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diff
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|
4035 rt, |
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diff
changeset
|
4036 access_flags, |
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diff
changeset
|
4037 name, |
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diff
changeset
|
4038 super_klass(), |
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diff
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|
4039 !host_klass.is_null(), |
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coleenp
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diff
changeset
|
4040 CHECK_(nullHandle)); |
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|
4041 instanceKlassHandle this_klass (THREAD, _klass); |
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|
4042 |
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|
4043 assert(this_klass->static_field_size() == info.static_field_size, "sanity"); |
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|
4044 assert(this_klass->nonstatic_oop_map_count() == info.total_oop_map_count, |
938 | 4045 "sanity"); |
0 | 4046 |
4047 // Fill in information already parsed | |
975 | 4048 this_klass->set_should_verify_class(verify); |
8719
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|
4049 jint lh = Klass::instance_layout_helper(info.instance_size, false); |
0 | 4050 this_klass->set_layout_helper(lh); |
4051 assert(this_klass->oop_is_instance(), "layout is correct"); | |
8719
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|
4052 assert(this_klass->size_helper() == info.instance_size, "correct size_helper"); |
0 | 4053 // Not yet: supers are done below to support the new subtype-checking fields |
4054 //this_klass->set_super(super_klass()); | |
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4055 this_klass->set_class_loader_data(loader_data); |
8719
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|
4056 this_klass->set_nonstatic_field_size(info.nonstatic_field_size); |
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|
4057 this_klass->set_has_nonstatic_fields(info.has_nonstatic_fields); |
3938 | 4058 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
8719
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|
4059 |
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|
4060 apply_parsed_class_metadata(this_klass, java_fields_count, CHECK_NULL); |
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|
4061 |
0 | 4062 if (has_final_method) { |
4063 this_klass->set_has_final_method(); | |
4064 } | |
8719
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|
4065 this_klass->copy_method_ordering(method_ordering, CHECK_NULL); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
4066 // The InstanceKlass::_methods_jmethod_ids cache |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
4067 // is managed on the assumption that the initial cache |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
4068 // size is equal to the number of methods in the class. If |
6725
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|
4069 // that changes, then InstanceKlass::idnum_can_increment() |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
4070 // has to be changed accordingly. |
0 | 4071 this_klass->set_initial_method_idnum(methods->length()); |
4072 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
6852 | 4073 if (is_anonymous()) // I am well known to myself |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
4074 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
6725
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|
4075 |
0 | 4076 this_klass->set_minor_version(minor_version); |
4077 this_klass->set_major_version(major_version); | |
6934 | 4078 this_klass->set_has_default_methods(has_default_methods); |
20576
90257dfad6e3
8043275: 8u40 backport: Fix interface initialization for default methods.
acorn
parents:
20561
diff
changeset
|
4079 this_klass->set_declares_default_methods(declares_default_methods); |
0 | 4080 |
17998
ae92351815b6
8039150: host_klass invariant fails when verifying newly loaded JSR-292 anonymous classes
coleenp
parents:
17934
diff
changeset
|
4081 if (!host_klass.is_null()) { |
ae92351815b6
8039150: host_klass invariant fails when verifying newly loaded JSR-292 anonymous classes
coleenp
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17934
diff
changeset
|
4082 assert (this_klass->is_anonymous(), "should be the same"); |
ae92351815b6
8039150: host_klass invariant fails when verifying newly loaded JSR-292 anonymous classes
coleenp
parents:
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diff
changeset
|
4083 this_klass->set_host_klass(host_klass()); |
ae92351815b6
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coleenp
parents:
17934
diff
changeset
|
4084 } |
ae92351815b6
8039150: host_klass invariant fails when verifying newly loaded JSR-292 anonymous classes
coleenp
parents:
17934
diff
changeset
|
4085 |
6725
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coleenp
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changeset
|
4086 // Set up Method*::intrinsic_id as soon as we know the names of methods. |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4087 // (We used to do this lazily, but now we query it in Rewriter, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4088 // which is eagerly done for every method, so we might as well do it now, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4089 // when everything is fresh in memory.) |
6725
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coleenp
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diff
changeset
|
4090 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4091 for (int j = 0; j < methods->length(); j++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4092 methods->at(j)->init_intrinsic_id(); |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4093 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4094 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
4095 |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
10405
diff
changeset
|
4096 if (cached_class_file != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
4097 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
10405
diff
changeset
|
4098 this_klass->set_cached_class_file(cached_class_file); |
0 | 4099 } |
4100 | |
6934 | 4101 // Fill in field values obtained by parse_classfile_attributes |
4102 if (parsed_annotations.has_any_annotations()) | |
4103 parsed_annotations.apply_to(this_klass); | |
4104 apply_parsed_class_attributes(this_klass); | |
4105 | |
0 | 4106 // Miranda methods |
4107 if ((num_miranda_methods > 0) || | |
4108 // if this class introduced new miranda methods or | |
4109 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
4110 // super class exists and this class inherited miranda methods | |
4111 ) { | |
4112 this_klass->set_has_miranda_methods(); // then set a flag | |
4113 } | |
4114 | |
4115 // Fill in information needed to compute superclasses. | |
4116 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
4117 | |
4118 // Initialize itable offset tables | |
4119 klassItable::setup_itable_offset_table(this_klass); | |
4120 | |
6934 | 4121 // Compute transitive closure of interfaces this class implements |
0 | 4122 // Do final class setup |
8719
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coleenp
parents:
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diff
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|
4123 fill_oop_maps(this_klass, info.nonstatic_oop_map_count, info.nonstatic_oop_offsets, info.nonstatic_oop_counts); |
0 | 4124 |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
4125 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
0 | 4126 set_precomputed_flags(this_klass); |
4127 | |
4128 // reinitialize modifiers, using the InnerClasses attribute | |
4129 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
4130 this_klass->set_modifier_flags(computed_modifiers); | |
4131 | |
4132 // check if this class can access its super class | |
4133 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
4134 | |
4135 // check if this class can access its superinterfaces | |
4136 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
4137 | |
4138 // check if this class overrides any final method | |
4139 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
4140 | |
4141 // check that if this class is an interface then it doesn't have static methods | |
4142 if (this_klass->is_interface()) { | |
7579
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
acorn
parents:
7462
diff
changeset
|
4143 /* An interface in a JAVA 8 classfile can be static */ |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
acorn
parents:
7462
diff
changeset
|
4144 if (_major_version < JAVA_8_VERSION) { |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
acorn
parents:
7462
diff
changeset
|
4145 check_illegal_static_method(this_klass, CHECK_(nullHandle)); |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
acorn
parents:
7462
diff
changeset
|
4146 } |
0 | 4147 } |
4148 | |
10343
6bd680e9ea35
8003421: NPG: Move oops out of InstanceKlass into mirror
coleenp
parents:
10340
diff
changeset
|
4149 // Allocate mirror and initialize static fields |
20415
47e3110c47e8
6642881: Improve performance of Class.getClassLoader()
coleenp
parents:
20375
diff
changeset
|
4150 java_lang_Class::create_mirror(this_klass, class_loader, protection_domain, |
47e3110c47e8
6642881: Improve performance of Class.getClassLoader()
coleenp
parents:
20375
diff
changeset
|
4151 CHECK_(nullHandle)); |
6934 | 4152 |
4153 // Generate any default methods - default methods are interface methods | |
4154 // that have a default implementation. This is new with Lambda project. | |
13055
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
acorn
parents:
12924
diff
changeset
|
4155 if (has_default_methods ) { |
6934 | 4156 DefaultMethods::generate_default_methods( |
4157 this_klass(), &all_mirandas, CHECK_(nullHandle)); | |
4158 } | |
4159 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
4160 // Update the loader_data graph. |
da91efe96a93
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coleenp
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6266
diff
changeset
|
4161 record_defined_class_dependencies(this_klass, CHECK_NULL); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4162 |
da91efe96a93
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coleenp
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diff
changeset
|
4163 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
0 | 4164 false /* not shared class */); |
4165 | |
4166 if (TraceClassLoading) { | |
6934 | 4167 ResourceMark rm; |
0 | 4168 // print in a single call to reduce interleaving of output |
4169 if (cfs->source() != NULL) { | |
4170 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
4171 cfs->source()); | |
4172 } else if (class_loader.is_null()) { | |
20561
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4173 Klass* caller = |
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4174 THREAD->is_Java_thread() |
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4175 ? ((JavaThread*)THREAD)->security_get_caller_class(1) |
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4176 : NULL; |
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4177 // caller can be NULL, for example, during a JVMTI VM_Init hook |
8e15758b2e94
8031376: TraceClassLoading expects there to be a (Java) caller when you load a class with the bootstrap class loader
sla
parents:
20528
diff
changeset
|
4178 if (caller != NULL) { |
0 | 4179 tty->print("[Loaded %s by instance of %s]\n", |
4180 this_klass->external_name(), | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
4181 InstanceKlass::cast(caller)->external_name()); |
0 | 4182 } else { |
4183 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
4184 } | |
4185 } else { | |
4186 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
4187 InstanceKlass::cast(class_loader->klass())->external_name()); |
0 | 4188 } |
4189 } | |
4190 | |
4191 if (TraceClassResolution) { | |
6934 | 4192 ResourceMark rm; |
0 | 4193 // print out the superclass. |
6983 | 4194 const char * from = this_klass()->external_name(); |
0 | 4195 if (this_klass->java_super() != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
4196 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 4197 } |
4198 // print out each of the interface classes referred to by this class. | |
6725
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coleenp
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6266
diff
changeset
|
4199 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
da91efe96a93
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coleenp
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6266
diff
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|
4200 if (local_interfaces != NULL) { |
0 | 4201 int length = local_interfaces->length(); |
4202 for (int i = 0; i < length; i++) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4203 Klass* k = local_interfaces->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4204 InstanceKlass* to_class = InstanceKlass::cast(k); |
0 | 4205 const char * to = to_class->external_name(); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
4206 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 4207 } |
4208 } | |
4209 } | |
4210 | |
4211 // preserve result across HandleMark | |
4212 preserve_this_klass = this_klass(); | |
4213 } | |
4214 | |
6725
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6266
diff
changeset
|
4215 // Create new handle outside HandleMark (might be needed for |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4216 // Extended Class Redefinition) |
0 | 4217 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
4218 debug_only(this_klass->verify();) |
0 | 4219 |
8719
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4220 // Clear class if no error has occurred so destructor doesn't deallocate it |
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4221 _klass = NULL; |
0 | 4222 return this_klass; |
4223 } | |
4224 | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
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8716
diff
changeset
|
4225 // Destructor to clean up if there's an error |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
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8716
diff
changeset
|
4226 ClassFileParser::~ClassFileParser() { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
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8716
diff
changeset
|
4227 MetadataFactory::free_metadata(_loader_data, _cp); |
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4228 MetadataFactory::free_array<u2>(_loader_data, _fields); |
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4229 |
c8b31b461e1a
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coleenp
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8716
diff
changeset
|
4230 // Free methods |
c8b31b461e1a
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4231 InstanceKlass::deallocate_methods(_loader_data, _methods); |
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4232 |
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4233 // beware of the Universe::empty_blah_array!! |
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4234 if (_inner_classes != Universe::the_empty_short_array()) { |
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4235 MetadataFactory::free_array<u2>(_loader_data, _inner_classes); |
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4236 } |
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4237 |
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4238 // Free interfaces |
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4239 InstanceKlass::deallocate_interfaces(_loader_data, _super_klass(), |
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4240 _local_interfaces, _transitive_interfaces); |
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4241 |
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4242 MetadataFactory::free_array<u1>(_loader_data, _annotations); |
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4243 MetadataFactory::free_array<u1>(_loader_data, _type_annotations); |
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4244 Annotations::free_contents(_loader_data, _fields_annotations); |
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4245 Annotations::free_contents(_loader_data, _fields_type_annotations); |
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4246 |
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4247 clear_class_metadata(); |
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4248 |
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4249 // deallocate the klass if already created. Don't directly deallocate, but add |
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4250 // to the deallocate list so that the klass is removed from the CLD::_klasses list |
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4251 // at a safepoint. |
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4252 if (_klass != NULL) { |
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4253 _loader_data->add_to_deallocate_list(_klass); |
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4254 } |
8719
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4255 _klass = NULL; |
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4256 } |
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4257 |
7587 | 4258 void ClassFileParser::print_field_layout(Symbol* name, |
4259 Array<u2>* fields, | |
4260 constantPoolHandle cp, | |
4261 int instance_size, | |
4262 int instance_fields_start, | |
4263 int instance_fields_end, | |
4264 int static_fields_end) { | |
4265 tty->print("%s: field layout\n", name->as_klass_external_name()); | |
4266 tty->print(" @%3d %s\n", instance_fields_start, "--- instance fields start ---"); | |
4267 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4268 if (!fs.access_flags().is_static()) { | |
4269 tty->print(" @%3d \"%s\" %s\n", | |
4270 fs.offset(), | |
4271 fs.name()->as_klass_external_name(), | |
4272 fs.signature()->as_klass_external_name()); | |
4273 } | |
4274 } | |
4275 tty->print(" @%3d %s\n", instance_fields_end, "--- instance fields end ---"); | |
4276 tty->print(" @%3d %s\n", instance_size * wordSize, "--- instance ends ---"); | |
4277 tty->print(" @%3d %s\n", InstanceMirrorKlass::offset_of_static_fields(), "--- static fields start ---"); | |
4278 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4279 if (fs.access_flags().is_static()) { | |
4280 tty->print(" @%3d \"%s\" %s\n", | |
4281 fs.offset(), | |
4282 fs.name()->as_klass_external_name(), | |
4283 fs.signature()->as_klass_external_name()); | |
4284 } | |
4285 } | |
4286 tty->print(" @%3d %s\n", static_fields_end, "--- static fields end ---"); | |
4287 tty->print("\n"); | |
4288 } | |
4289 | |
939
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4290 unsigned int |
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4291 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
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4292 unsigned int nonstatic_oop_map_count, |
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4293 int first_nonstatic_oop_offset) { |
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4294 unsigned int map_count = |
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4295 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 4296 if (nonstatic_oop_map_count > 0) { |
4297 // We have oops to add to map | |
938 | 4298 if (map_count == 0) { |
4299 map_count = nonstatic_oop_map_count; | |
0 | 4300 } else { |
938 | 4301 // Check whether we should add a new map block or whether the last one can |
4302 // be extended | |
4303 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
4304 OopMapBlock* const last_map = first_map + map_count - 1; | |
4305 | |
4306 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 4307 if (next_offset == first_nonstatic_oop_offset) { |
4308 // There is no gap bettwen superklass's last oop field and first | |
4309 // local oop field, merge maps. | |
4310 nonstatic_oop_map_count -= 1; | |
4311 } else { | |
4312 // Superklass didn't end with a oop field, add extra maps | |
938 | 4313 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 4314 } |
938 | 4315 map_count += nonstatic_oop_map_count; |
0 | 4316 } |
4317 } | |
938 | 4318 return map_count; |
0 | 4319 } |
4320 | |
4321 | |
4322 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
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4323 unsigned int nonstatic_oop_map_count, |
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4324 int* nonstatic_oop_offsets, |
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4325 unsigned int* nonstatic_oop_counts) { |
0 | 4326 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
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4327 const InstanceKlass* const super = k->superklass(); |
939
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4328 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 4329 if (super_count > 0) { |
4330 // Copy maps from superklass | |
0 | 4331 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
939
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4332 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 4333 *this_oop_map++ = *super_oop_map++; |
4334 } | |
4335 } | |
938 | 4336 |
0 | 4337 if (nonstatic_oop_map_count > 0) { |
938 | 4338 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
4339 // The counts differ because there is no gap between superklass's last oop | |
4340 // field and the first local oop field. Extend the last oop map copied | |
0 | 4341 // from the superklass instead of creating new one. |
4342 nonstatic_oop_map_count--; | |
4343 nonstatic_oop_offsets++; | |
4344 this_oop_map--; | |
938 | 4345 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 4346 this_oop_map++; |
4347 } | |
938 | 4348 |
0 | 4349 // Add new map blocks, fill them |
4350 while (nonstatic_oop_map_count-- > 0) { | |
4351 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 4352 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 4353 this_oop_map++; |
4354 } | |
938 | 4355 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
4356 this_oop_map, "sanity"); | |
0 | 4357 } |
4358 } | |
4359 | |
4360 | |
4361 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
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4362 Klass* super = k->super(); |
0 | 4363 |
4364 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
4365 // in which case we don't have to register objects as finalizable | |
4366 if (!_has_empty_finalizer) { | |
4367 if (_has_finalizer || | |
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4368 (super != NULL && super->has_finalizer())) { |
0 | 4369 k->set_has_finalizer(); |
4370 } | |
4371 } | |
4372 | |
4373 #ifdef ASSERT | |
4374 bool f = false; | |
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4375 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
0 | 4376 vmSymbols::void_method_signature()); |
4377 if (m != NULL && !m->is_empty_method()) { | |
4378 f = true; | |
4379 } | |
4380 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
4381 #endif | |
4382 | |
4383 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 4384 if (SystemDictionary::Cloneable_klass_loaded()) { |
4385 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 4386 k->set_is_cloneable(); |
4387 } | |
4388 } | |
4389 | |
4390 // Check if this klass has a vanilla default constructor | |
4391 if (super == NULL) { | |
4392 // java.lang.Object has empty default constructor | |
4393 k->set_has_vanilla_constructor(); | |
4394 } else { | |
6983 | 4395 if (super->has_vanilla_constructor() && |
0 | 4396 _has_vanilla_constructor) { |
4397 k->set_has_vanilla_constructor(); | |
4398 } | |
4399 #ifdef ASSERT | |
4400 bool v = false; | |
6983 | 4401 if (super->has_vanilla_constructor()) { |
6725
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4402 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
0 | 4403 ), vmSymbols::void_method_signature()); |
4404 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
4405 v = true; | |
4406 } | |
4407 } | |
4408 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
4409 #endif | |
4410 } | |
4411 | |
4412 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
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4413 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
0 | 4414 assert(k->size_helper() > 0, "layout_helper is initialized"); |
4415 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
4416 || k->is_abstract() || k->is_interface() | |
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|
4417 || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
0 | 4418 || k->size_helper() >= FastAllocateSizeLimit) { |
4419 // Forbid fast-path allocation. | |
4420 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
4421 k->set_layout_helper(lh); | |
4422 } | |
4423 } | |
4424 | |
6725
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4425 // Attach super classes and interface classes to class loader data |
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4426 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
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4427 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
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4428 if (defining_loader_data->is_the_null_class_loader_data()) { |
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4429 // Dependencies to null class loader data are implicit. |
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4430 return; |
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|
4431 } else { |
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|
4432 // add super class dependency |
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4433 Klass* super = defined_klass->super(); |
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4434 if (super != NULL) { |
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4435 defining_loader_data->record_dependency(super, CHECK); |
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4436 } |
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4437 |
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4438 // add super interface dependencies |
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4439 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
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4440 if (local_interfaces != NULL) { |
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4441 int length = local_interfaces->length(); |
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4442 for (int i = 0; i < length; i++) { |
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4443 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
0 | 4444 } |
4445 } | |
4446 } | |
4447 } | |
4448 | |
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4449 // utility methods for appending an array with check for duplicates |
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4450 |
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4451 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
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4452 // iterate over new interfaces |
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4453 for (int i = 0; i < ifs->length(); i++) { |
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4454 Klass* e = ifs->at(i); |
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4455 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
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4456 // add new interface |
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|
4457 result->append_if_missing(e); |
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|
4458 } |
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|
4459 } |
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4460 |
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4461 Array<Klass*>* ClassFileParser::compute_transitive_interfaces( |
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4462 instanceKlassHandle super, |
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4463 Array<Klass*>* local_ifs, TRAPS) { |
0 | 4464 // Compute maximum size for transitive interfaces |
4465 int max_transitive_size = 0; | |
4466 int super_size = 0; | |
4467 // Add superclass transitive interfaces size | |
4468 if (super.not_null()) { | |
4469 super_size = super->transitive_interfaces()->length(); | |
4470 max_transitive_size += super_size; | |
4471 } | |
4472 // Add local interfaces' super interfaces | |
4473 int local_size = local_ifs->length(); | |
4474 for (int i = 0; i < local_size; i++) { | |
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4475 Klass* l = local_ifs->at(i); |
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4476 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
0 | 4477 } |
4478 // Finally add local interfaces | |
4479 max_transitive_size += local_size; | |
4480 // Construct array | |
4481 if (max_transitive_size == 0) { | |
4482 // no interfaces, use canonicalized array | |
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4483 return Universe::the_empty_klass_array(); |
0 | 4484 } else if (max_transitive_size == super_size) { |
4485 // no new local interfaces added, share superklass' transitive interface array | |
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4486 return super->transitive_interfaces(); |
0 | 4487 } else if (max_transitive_size == local_size) { |
4488 // only local interfaces added, share local interface array | |
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4489 return local_ifs; |
0 | 4490 } else { |
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4491 ResourceMark rm; |
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4492 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4493 |
0 | 4494 // Copy down from superclass |
4495 if (super.not_null()) { | |
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4496 append_interfaces(result, super->transitive_interfaces()); |
0 | 4497 } |
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4498 |
0 | 4499 // Copy down from local interfaces' superinterfaces |
4500 for (int i = 0; i < local_ifs->length(); i++) { | |
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4501 Klass* l = local_ifs->at(i); |
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4502 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
0 | 4503 } |
4504 // Finally add local interfaces | |
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4505 append_interfaces(result, local_ifs); |
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4506 |
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4507 // length will be less than the max_transitive_size if duplicates were removed |
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4508 int length = result->length(); |
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|
4509 assert(length <= max_transitive_size, "just checking"); |
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|
4510 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(_loader_data, length, CHECK_NULL); |
6725
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4511 for (int i = 0; i < length; i++) { |
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4512 Klass* e = result->at(i); |
0 | 4513 assert(e != NULL, "just checking"); |
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4514 new_result->at_put(i, e); |
0 | 4515 } |
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4516 return new_result; |
0 | 4517 } |
4518 } | |
4519 | |
4520 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
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4521 Klass* super = this_klass->super(); |
0 | 4522 if ((super != NULL) && |
6725
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4523 (!Reflection::verify_class_access(this_klass(), super, false))) { |
0 | 4524 ResourceMark rm(THREAD); |
4525 Exceptions::fthrow( | |
4526 THREAD_AND_LOCATION, | |
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|
4527 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4528 "class %s cannot access its superclass %s", |
4529 this_klass->external_name(), | |
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|
4530 InstanceKlass::cast(super)->external_name() |
0 | 4531 ); |
4532 return; | |
4533 } | |
4534 } | |
4535 | |
4536 | |
4537 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
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4538 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
0 | 4539 int lng = local_interfaces->length(); |
4540 for (int i = lng - 1; i >= 0; i--) { | |
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4541 Klass* k = local_interfaces->at(i); |
6983 | 4542 assert (k != NULL && k->is_interface(), "invalid interface"); |
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4543 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
0 | 4544 ResourceMark rm(THREAD); |
4545 Exceptions::fthrow( | |
4546 THREAD_AND_LOCATION, | |
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|
4547 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4548 "class %s cannot access its superinterface %s", |
4549 this_klass->external_name(), | |
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|
4550 InstanceKlass::cast(k)->external_name() |
0 | 4551 ); |
4552 return; | |
4553 } | |
4554 } | |
4555 } | |
4556 | |
4557 | |
4558 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
6725
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|
4559 Array<Method*>* methods = this_klass->methods(); |
0 | 4560 int num_methods = methods->length(); |
4561 | |
4562 // go thru each method and check if it overrides a final method | |
4563 for (int index = 0; index < num_methods; index++) { | |
6725
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|
4564 Method* m = methods->at(index); |
0 | 4565 |
13398
19146c82b6fc
8028520: JVM should not throw VerifyError when a private method overrides a final method
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diff
changeset
|
4566 // skip private, static, and <init> methods |
19146c82b6fc
8028520: JVM should not throw VerifyError when a private method overrides a final method
hseigel
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13055
diff
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|
4567 if ((!m->is_private() && !m->is_static()) && |
0 | 4568 (m->name() != vmSymbols::object_initializer_name())) { |
4569 | |
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|
4570 Symbol* name = m->name(); |
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|
4571 Symbol* signature = m->signature(); |
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|
4572 Klass* k = this_klass->super(); |
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|
4573 Method* super_m = NULL; |
0 | 4574 while (k != NULL) { |
4575 // skip supers that don't have final methods. | |
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|
4576 if (k->has_final_method()) { |
0 | 4577 // lookup a matching method in the super class hierarchy |
6725
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|
4578 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
0 | 4579 if (super_m == NULL) { |
4580 break; // didn't find any match; get out | |
4581 } | |
4582 | |
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8028553: The JVM should not throw VerifyError when 'overriding' a static final method in a superclass.
hseigel
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|
4583 if (super_m->is_final() && !super_m->is_static() && |
4638c4d7ff10
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diff
changeset
|
4584 // matching method in super is final, and not static |
6725
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|
4585 (Reflection::verify_field_access(this_klass(), |
0 | 4586 super_m->method_holder(), |
4587 super_m->method_holder(), | |
4588 super_m->access_flags(), false)) | |
4589 // this class can access super final method and therefore override | |
4590 ) { | |
4591 ResourceMark rm(THREAD); | |
4592 Exceptions::fthrow( | |
4593 THREAD_AND_LOCATION, | |
2177
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|
4594 vmSymbols::java_lang_VerifyError(), |
0 | 4595 "class %s overrides final method %s.%s", |
4596 this_klass->external_name(), | |
4597 name->as_C_string(), | |
4598 signature->as_C_string() | |
4599 ); | |
4600 return; | |
4601 } | |
4602 | |
4603 // continue to look from super_m's holder's super. | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6934
diff
changeset
|
4604 k = super_m->method_holder()->super(); |
0 | 4605 continue; |
4606 } | |
4607 | |
6725
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|
4608 k = k->super(); |
0 | 4609 } |
4610 } | |
4611 } | |
4612 } | |
4613 | |
4614 | |
4615 // assumes that this_klass is an interface | |
4616 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
4617 assert(this_klass->is_interface(), "not an interface"); | |
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|
4618 Array<Method*>* methods = this_klass->methods(); |
0 | 4619 int num_methods = methods->length(); |
4620 | |
4621 for (int index = 0; index < num_methods; index++) { | |
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|
4622 Method* m = methods->at(index); |
0 | 4623 // if m is static and not the init method, throw a verify error |
4624 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
4625 ResourceMark rm(THREAD); | |
4626 Exceptions::fthrow( | |
4627 THREAD_AND_LOCATION, | |
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
4628 vmSymbols::java_lang_VerifyError(), |
0 | 4629 "Illegal static method %s in interface %s", |
4630 m->name()->as_C_string(), | |
4631 this_klass->external_name() | |
4632 ); | |
4633 return; | |
4634 } | |
4635 } | |
4636 } | |
4637 | |
4638 // utility methods for format checking | |
4639 | |
4640 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
4641 if (!_need_verify) { return; } | |
4642 | |
4643 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
4644 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4645 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4646 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
4647 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4648 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
4649 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4650 | |
4651 if ((is_abstract && is_final) || | |
4652 (is_interface && !is_abstract) || | |
4653 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
4654 (!is_interface && major_gte_15 && is_annotation)) { | |
4655 ResourceMark rm(THREAD); | |
4656 Exceptions::fthrow( | |
4657 THREAD_AND_LOCATION, | |
2177
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coleenp
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2085
diff
changeset
|
4658 vmSymbols::java_lang_ClassFormatError(), |
0 | 4659 "Illegal class modifiers in class %s: 0x%X", |
4660 _class_name->as_C_string(), flags | |
4661 ); | |
4662 return; | |
4663 } | |
4664 } | |
4665 | |
4666 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
4667 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4668 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4669 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4670 | |
4671 return ((is_public && is_protected) || | |
4672 (is_public && is_private) || | |
4673 (is_protected && is_private)); | |
4674 } | |
4675 | |
4676 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
1124
2e8bdfdd3ba2
6899467: System property java.class.version out-of-sync with VM for jdk 5.0 with HS 16 in nightly build
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977
diff
changeset
|
4677 u2 max_version = |
2e8bdfdd3ba2
6899467: System property java.class.version out-of-sync with VM for jdk 5.0 with HS 16 in nightly build
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977
diff
changeset
|
4678 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
2e8bdfdd3ba2
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977
diff
changeset
|
4679 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 4680 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
176
6b648fefb395
6705523: Fix for 6695506 will violate spec when used in JDK6
kamg
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136
diff
changeset
|
4681 (major <= max_version) && |
6b648fefb395
6705523: Fix for 6695506 will violate spec when used in JDK6
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136
diff
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|
4682 ((major != max_version) || |
0 | 4683 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
4684 } | |
4685 | |
4686 void ClassFileParser::verify_legal_field_modifiers( | |
4687 jint flags, bool is_interface, TRAPS) { | |
4688 if (!_need_verify) { return; } | |
4689 | |
4690 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4691 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4692 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4693 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4694 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4695 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
4696 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
4697 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4698 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4699 | |
4700 bool is_illegal = false; | |
4701 | |
4702 if (is_interface) { | |
4703 if (!is_public || !is_static || !is_final || is_private || | |
4704 is_protected || is_volatile || is_transient || | |
4705 (major_gte_15 && is_enum)) { | |
4706 is_illegal = true; | |
4707 } | |
4708 } else { // not interface | |
4709 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
4710 is_illegal = true; | |
4711 } | |
4712 } | |
4713 | |
4714 if (is_illegal) { | |
4715 ResourceMark rm(THREAD); | |
4716 Exceptions::fthrow( | |
4717 THREAD_AND_LOCATION, | |
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|
4718 vmSymbols::java_lang_ClassFormatError(), |
0 | 4719 "Illegal field modifiers in class %s: 0x%X", |
4720 _class_name->as_C_string(), flags); | |
4721 return; | |
4722 } | |
4723 } | |
4724 | |
4725 void ClassFileParser::verify_legal_method_modifiers( | |
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|
4726 jint flags, bool is_interface, Symbol* name, TRAPS) { |
0 | 4727 if (!_need_verify) { return; } |
4728 | |
4729 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4730 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4731 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4732 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4733 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
4734 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4735 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
4736 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
4737 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
7579
adc176e95bf2
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7462
diff
changeset
|
4738 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
0 | 4739 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
6934 | 4740 const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
0 | 4741 const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
4742 | |
4743 bool is_illegal = false; | |
4744 | |
4745 if (is_interface) { | |
7579
adc176e95bf2
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diff
changeset
|
4746 if (major_gte_8) { |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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diff
changeset
|
4747 // Class file version is JAVA_8_VERSION or later Methods of |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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7462
diff
changeset
|
4748 // interfaces may set any of the flags except ACC_PROTECTED, |
adc176e95bf2
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diff
changeset
|
4749 // ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED; they must |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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7462
diff
changeset
|
4750 // have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set. |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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7462
diff
changeset
|
4751 if ((is_public == is_private) || /* Only one of private and public should be true - XNOR */ |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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diff
changeset
|
4752 (is_native || is_protected || is_final || is_synchronized) || |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
acorn
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7462
diff
changeset
|
4753 // If a specific method of a class or interface has its |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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diff
changeset
|
4754 // ACC_ABSTRACT flag set, it must not have any of its |
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4755 // ACC_FINAL, ACC_NATIVE, ACC_PRIVATE, ACC_STATIC, |
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4756 // ACC_STRICT, or ACC_SYNCHRONIZED flags set. No need to |
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4757 // check for ACC_FINAL, ACC_NATIVE or ACC_SYNCHRONIZED as |
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4758 // those flags are illegal irrespective of ACC_ABSTRACT being set or not. |
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4759 (is_abstract && (is_private || is_static || is_strict))) { |
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4760 is_illegal = true; |
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4761 } |
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4762 } else if (major_gte_15) { |
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4763 // Class file version in the interval [JAVA_1_5_VERSION, JAVA_8_VERSION) |
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4764 if (!is_public || is_static || is_final || is_synchronized || |
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4765 is_native || !is_abstract || is_strict) { |
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4766 is_illegal = true; |
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4767 } |
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4768 } else { |
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4769 // Class file version is pre-JAVA_1_5_VERSION |
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4770 if (!is_public || is_static || is_final || is_native || !is_abstract) { |
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4771 is_illegal = true; |
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4772 } |
0 | 4773 } |
4774 } else { // not interface | |
4775 if (is_initializer) { | |
4776 if (is_static || is_final || is_synchronized || is_native || | |
4777 is_abstract || (major_gte_15 && is_bridge)) { | |
4778 is_illegal = true; | |
4779 } | |
4780 } else { // not initializer | |
4781 if (is_abstract) { | |
4782 if ((is_final || is_native || is_private || is_static || | |
4783 (major_gte_15 && (is_synchronized || is_strict)))) { | |
4784 is_illegal = true; | |
4785 } | |
4786 } | |
4787 if (has_illegal_visibility(flags)) { | |
4788 is_illegal = true; | |
4789 } | |
4790 } | |
4791 } | |
4792 | |
4793 if (is_illegal) { | |
4794 ResourceMark rm(THREAD); | |
4795 Exceptions::fthrow( | |
4796 THREAD_AND_LOCATION, | |
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4797 vmSymbols::java_lang_ClassFormatError(), |
0 | 4798 "Method %s in class %s has illegal modifiers: 0x%X", |
4799 name->as_C_string(), _class_name->as_C_string(), flags); | |
4800 return; | |
4801 } | |
4802 } | |
4803 | |
4804 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
4805 assert(_need_verify, "only called when _need_verify is true"); | |
4806 int i = 0; | |
4807 int count = length >> 2; | |
4808 for (int k=0; k<count; k++) { | |
4809 unsigned char b0 = buffer[i]; | |
4810 unsigned char b1 = buffer[i+1]; | |
4811 unsigned char b2 = buffer[i+2]; | |
4812 unsigned char b3 = buffer[i+3]; | |
4813 // For an unsigned char v, | |
4814 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4815 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4816 unsigned char res = b0 | b0 - 1 | | |
4817 b1 | b1 - 1 | | |
4818 b2 | b2 - 1 | | |
4819 b3 | b3 - 1; | |
4820 if (res >= 128) break; | |
4821 i += 4; | |
4822 } | |
4823 for(; i < length; i++) { | |
4824 unsigned short c; | |
4825 // no embedded zeros | |
4826 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4827 if(buffer[i] < 128) { | |
4828 continue; | |
4829 } | |
4830 if ((i + 5) < length) { // see if it's legal supplementary character | |
4831 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4832 c = UTF8::get_supplementary_character(&buffer[i]); | |
4833 i += 5; | |
4834 continue; | |
4835 } | |
4836 } | |
4837 switch (buffer[i] >> 4) { | |
4838 default: break; | |
4839 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4840 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4841 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4842 c = (buffer[i] & 0x1F) << 6; | |
4843 i++; | |
4844 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4845 c += buffer[i] & 0x3F; | |
4846 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4847 // for classes with major > 47, c must a null or a character in its shortest form | |
4848 break; | |
4849 } | |
4850 } | |
4851 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4852 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4853 c = (buffer[i] & 0xF) << 12; | |
4854 i += 2; | |
4855 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4856 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4857 if (_major_version <= 47 || c >= 0x800) { | |
4858 // for classes with major > 47, c must be in its shortest form | |
4859 break; | |
4860 } | |
4861 } | |
4862 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4863 } // end of switch | |
4864 } // end of for | |
4865 } | |
4866 | |
4867 // Checks if name is a legal class name. | |
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4868 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
0 | 4869 if (!_need_verify || _relax_verify) { return; } |
4870 | |
4871 char buf[fixed_buffer_size]; | |
4872 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4873 unsigned int length = name->utf8_length(); | |
4874 bool legal = false; | |
4875 | |
4876 if (length > 0) { | |
4877 char* p; | |
4878 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4879 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4880 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4881 } else if (_major_version < JAVA_1_5_VERSION) { | |
4882 if (bytes[0] != '<') { | |
4883 p = skip_over_field_name(bytes, true, length); | |
4884 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4885 } | |
4886 } else { | |
4887 // 4900761: relax the constraints based on JSR202 spec | |
4888 // Class names may be drawn from the entire Unicode character set. | |
4889 // Identifiers between '/' must be unqualified names. | |
4890 // The utf8 string has been verified when parsing cpool entries. | |
4891 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4892 } | |
4893 } | |
4894 if (!legal) { | |
4895 ResourceMark rm(THREAD); | |
4896 Exceptions::fthrow( | |
4897 THREAD_AND_LOCATION, | |
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4898 vmSymbols::java_lang_ClassFormatError(), |
0 | 4899 "Illegal class name \"%s\" in class file %s", bytes, |
4900 _class_name->as_C_string() | |
4901 ); | |
4902 return; | |
4903 } | |
4904 } | |
4905 | |
4906 // Checks if name is a legal field name. | |
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4907 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
0 | 4908 if (!_need_verify || _relax_verify) { return; } |
4909 | |
4910 char buf[fixed_buffer_size]; | |
4911 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4912 unsigned int length = name->utf8_length(); | |
4913 bool legal = false; | |
4914 | |
4915 if (length > 0) { | |
4916 if (_major_version < JAVA_1_5_VERSION) { | |
4917 if (bytes[0] != '<') { | |
4918 char* p = skip_over_field_name(bytes, false, length); | |
4919 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4920 } | |
4921 } else { | |
4922 // 4881221: relax the constraints based on JSR202 spec | |
4923 legal = verify_unqualified_name(bytes, length, LegalField); | |
4924 } | |
4925 } | |
4926 | |
4927 if (!legal) { | |
4928 ResourceMark rm(THREAD); | |
4929 Exceptions::fthrow( | |
4930 THREAD_AND_LOCATION, | |
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4931 vmSymbols::java_lang_ClassFormatError(), |
0 | 4932 "Illegal field name \"%s\" in class %s", bytes, |
4933 _class_name->as_C_string() | |
4934 ); | |
4935 return; | |
4936 } | |
4937 } | |
4938 | |
4939 // Checks if name is a legal method name. | |
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4940 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
0 | 4941 if (!_need_verify || _relax_verify) { return; } |
4942 | |
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4943 assert(name != NULL, "method name is null"); |
0 | 4944 char buf[fixed_buffer_size]; |
4945 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4946 unsigned int length = name->utf8_length(); | |
4947 bool legal = false; | |
4948 | |
4949 if (length > 0) { | |
4950 if (bytes[0] == '<') { | |
4951 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
4952 legal = true; | |
4953 } | |
4954 } else if (_major_version < JAVA_1_5_VERSION) { | |
4955 char* p; | |
4956 p = skip_over_field_name(bytes, false, length); | |
4957 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4958 } else { | |
4959 // 4881221: relax the constraints based on JSR202 spec | |
4960 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
4961 } | |
4962 } | |
4963 | |
4964 if (!legal) { | |
4965 ResourceMark rm(THREAD); | |
4966 Exceptions::fthrow( | |
4967 THREAD_AND_LOCATION, | |
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4968 vmSymbols::java_lang_ClassFormatError(), |
0 | 4969 "Illegal method name \"%s\" in class %s", bytes, |
4970 _class_name->as_C_string() | |
4971 ); | |
4972 return; | |
4973 } | |
4974 } | |
4975 | |
4976 | |
4977 // Checks if signature is a legal field signature. | |
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4978 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4979 if (!_need_verify) { return; } |
4980 | |
4981 char buf[fixed_buffer_size]; | |
4982 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4983 unsigned int length = signature->utf8_length(); | |
4984 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
4985 | |
4986 if (p == NULL || (p - bytes) != (int)length) { | |
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4987 throwIllegalSignature("Field", name, signature, CHECK); |
0 | 4988 } |
4989 } | |
4990 | |
4991 // Checks if signature is a legal method signature. | |
4992 // Returns number of parameters | |
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4993 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4994 if (!_need_verify) { |
4995 // make sure caller's args_size will be less than 0 even for non-static | |
4996 // method so it will be recomputed in compute_size_of_parameters(). | |
4997 return -2; | |
4998 } | |
4999 | |
5000 unsigned int args_size = 0; | |
5001 char buf[fixed_buffer_size]; | |
5002 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
5003 unsigned int length = signature->utf8_length(); | |
5004 char* nextp; | |
5005 | |
5006 // The first character must be a '(' | |
5007 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
5008 length--; | |
5009 // Skip over legal field signatures | |
5010 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
5011 while ((length > 0) && (nextp != NULL)) { | |
5012 args_size++; | |
5013 if (p[0] == 'J' || p[0] == 'D') { | |
5014 args_size++; | |
5015 } | |
5016 length -= nextp - p; | |
5017 p = nextp; | |
5018 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
5019 } | |
5020 // The first non-signature thing better be a ')' | |
5021 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
5022 length--; | |
5023 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
5024 // All internal methods must return void | |
5025 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
5026 return args_size; | |
5027 } | |
5028 } else { | |
5029 // Now we better just have a return value | |
5030 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
5031 if (nextp && ((int)length == (nextp - p))) { | |
5032 return args_size; | |
5033 } | |
5034 } | |
5035 } | |
5036 } | |
5037 // Report error | |
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5038 throwIllegalSignature("Method", name, signature, CHECK_0); |
0 | 5039 return 0; |
5040 } | |
5041 | |
5042 | |
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5043 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
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5044 // Method names also may not contain the characters '<' or '>', unless <init> |
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5045 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
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5046 // method. Because these names have been checked as special cases before |
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5047 // calling this method in verify_legal_method_name. |
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5048 bool ClassFileParser::verify_unqualified_name( |
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5049 char* name, unsigned int length, int type) { |
0 | 5050 jchar ch; |
5051 | |
5052 for (char* p = name; p != name + length; ) { | |
5053 ch = *p; | |
5054 if (ch < 128) { | |
5055 p++; | |
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5056 if (ch == '.' || ch == ';' || ch == '[' ) { |
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|
5057 return false; // do not permit '.', ';', or '[' |
0 | 5058 } |
5059 if (type != LegalClass && ch == '/') { | |
5060 return false; // do not permit '/' unless it's class name | |
5061 } | |
5062 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
5063 return false; // do not permit '<' or '>' in method names | |
5064 } | |
5065 } else { | |
5066 char* tmp_p = UTF8::next(p, &ch); | |
5067 p = tmp_p; | |
5068 } | |
5069 } | |
5070 return true; | |
5071 } | |
5072 | |
5073 | |
5074 // Take pointer to a string. Skip over the longest part of the string that could | |
5075 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
5076 // Return a pointer to just past the fieldname. | |
5077 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
5078 // being true, we saw consecutive slashes (meaning we were looking for a | |
5079 // qualified path but found something that was badly-formed). | |
5080 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
5081 char* p; | |
5082 jchar ch; | |
5083 jboolean last_is_slash = false; | |
5084 jboolean not_first_ch = false; | |
5085 | |
5086 for (p = name; p != name + length; not_first_ch = true) { | |
5087 char* old_p = p; | |
5088 ch = *p; | |
5089 if (ch < 128) { | |
5090 p++; | |
5091 // quick check for ascii | |
5092 if ((ch >= 'a' && ch <= 'z') || | |
5093 (ch >= 'A' && ch <= 'Z') || | |
5094 (ch == '_' || ch == '$') || | |
5095 (not_first_ch && ch >= '0' && ch <= '9')) { | |
5096 last_is_slash = false; | |
5097 continue; | |
5098 } | |
5099 if (slash_ok && ch == '/') { | |
5100 if (last_is_slash) { | |
5101 return NULL; // Don't permit consecutive slashes | |
5102 } | |
5103 last_is_slash = true; | |
5104 continue; | |
5105 } | |
5106 } else { | |
5107 jint unicode_ch; | |
5108 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
5109 p = tmp_p; | |
5110 last_is_slash = false; | |
5111 // Check if ch is Java identifier start or is Java identifier part | |
5112 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
5113 EXCEPTION_MARK; | |
1142 | 5114 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 5115 |
5116 // return value | |
5117 JavaValue result(T_BOOLEAN); | |
5118 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
5119 JavaCallArguments args; | |
5120 args.push_int(unicode_ch); | |
5121 | |
5122 // public static boolean isJavaIdentifierStart(char ch); | |
5123 JavaCalls::call_static(&result, | |
5124 klass, | |
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5125 vmSymbols::isJavaIdentifierStart_name(), |
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5126 vmSymbols::int_bool_signature(), |
0 | 5127 &args, |
5128 THREAD); | |
5129 | |
5130 if (HAS_PENDING_EXCEPTION) { | |
5131 CLEAR_PENDING_EXCEPTION; | |
5132 return 0; | |
5133 } | |
5134 if (result.get_jboolean()) { | |
5135 continue; | |
5136 } | |
5137 | |
5138 if (not_first_ch) { | |
5139 // public static boolean isJavaIdentifierPart(char ch); | |
5140 JavaCalls::call_static(&result, | |
5141 klass, | |
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5142 vmSymbols::isJavaIdentifierPart_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
5143 vmSymbols::int_bool_signature(), |
0 | 5144 &args, |
5145 THREAD); | |
5146 | |
5147 if (HAS_PENDING_EXCEPTION) { | |
5148 CLEAR_PENDING_EXCEPTION; | |
5149 return 0; | |
5150 } | |
5151 | |
5152 if (result.get_jboolean()) { | |
5153 continue; | |
5154 } | |
5155 } | |
5156 } | |
5157 return (not_first_ch) ? old_p : NULL; | |
5158 } | |
5159 return (not_first_ch) ? p : NULL; | |
5160 } | |
5161 | |
5162 | |
5163 // Take pointer to a string. Skip over the longest part of the string that could | |
5164 // be taken as a field signature. Allow "void" if void_ok. | |
5165 // Return a pointer to just past the signature. | |
5166 // Return NULL if no legal signature is found. | |
5167 char* ClassFileParser::skip_over_field_signature(char* signature, | |
5168 bool void_ok, | |
5169 unsigned int length, | |
5170 TRAPS) { | |
5171 unsigned int array_dim = 0; | |
5172 while (length > 0) { | |
5173 switch (signature[0]) { | |
5174 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
5175 case JVM_SIGNATURE_BOOLEAN: | |
5176 case JVM_SIGNATURE_BYTE: | |
5177 case JVM_SIGNATURE_CHAR: | |
5178 case JVM_SIGNATURE_SHORT: | |
5179 case JVM_SIGNATURE_INT: | |
5180 case JVM_SIGNATURE_FLOAT: | |
5181 case JVM_SIGNATURE_LONG: | |
5182 case JVM_SIGNATURE_DOUBLE: | |
5183 return signature + 1; | |
5184 case JVM_SIGNATURE_CLASS: { | |
5185 if (_major_version < JAVA_1_5_VERSION) { | |
5186 // Skip over the class name if one is there | |
5187 char* p = skip_over_field_name(signature + 1, true, --length); | |
5188 | |
5189 // The next character better be a semicolon | |
5190 if (p && (p - signature) > 1 && p[0] == ';') { | |
5191 return p + 1; | |
5192 } | |
5193 } else { | |
5194 // 4900761: For class version > 48, any unicode is allowed in class name. | |
5195 length--; | |
5196 signature++; | |
5197 while (length > 0 && signature[0] != ';') { | |
5198 if (signature[0] == '.') { | |
5199 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
5200 } | |
5201 length--; | |
5202 signature++; | |
5203 } | |
5204 if (signature[0] == ';') { return signature + 1; } | |
5205 } | |
5206 | |
5207 return NULL; | |
5208 } | |
5209 case JVM_SIGNATURE_ARRAY: | |
5210 array_dim++; | |
5211 if (array_dim > 255) { | |
5212 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
5213 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
5214 } | |
5215 // The rest of what's there better be a legal signature | |
5216 signature++; | |
5217 length--; | |
5218 void_ok = false; | |
5219 break; | |
5220 | |
5221 default: | |
5222 return NULL; | |
5223 } | |
5224 } | |
5225 return NULL; | |
5226 } |