Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.cpp @ 10388:320b4e0f0892
8015585: Missing regression test for 8011771
Summary: missing regression test
Reviewed-by: kvn
author | roland |
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date | Thu, 30 May 2013 11:21:01 +0200 |
parents | bbddfb08190f |
children | ccdecfece956 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/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" |
31 #include "classfile/genericSignatures.hpp" | |
1972 | 32 #include "classfile/javaClasses.hpp" |
33 #include "classfile/symbolTable.hpp" | |
34 #include "classfile/systemDictionary.hpp" | |
35 #include "classfile/verificationType.hpp" | |
36 #include "classfile/verifier.hpp" | |
37 #include "classfile/vmSymbols.hpp" | |
38 #include "memory/allocation.hpp" | |
39 #include "memory/gcLocker.hpp" | |
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40 #include "memory/metadataFactory.hpp" |
1972 | 41 #include "memory/oopFactory.hpp" |
42 #include "memory/universe.inline.hpp" | |
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43 #include "oops/constantPool.hpp" |
3938 | 44 #include "oops/fieldStreams.hpp" |
1972 | 45 #include "oops/instanceKlass.hpp" |
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46 #include "oops/instanceMirrorKlass.hpp" |
1972 | 47 #include "oops/klass.inline.hpp" |
48 #include "oops/klassVtable.hpp" | |
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49 #include "oops/method.hpp" |
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50 #include "oops/symbol.hpp" |
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51 #include "prims/jvm.h" |
1972 | 52 #include "prims/jvmtiExport.hpp" |
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53 #include "prims/jvmtiThreadState.hpp" |
1972 | 54 #include "runtime/javaCalls.hpp" |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/signature.hpp" | |
58 #include "runtime/timer.hpp" | |
59 #include "services/classLoadingService.hpp" | |
60 #include "services/threadService.hpp" | |
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61 #include "utilities/array.hpp" |
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62 #include "utilities/globalDefinitions.hpp" |
0 | 63 |
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64 // We generally try to create the oops directly when parsing, rather than |
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65 // allocating temporary data structures and copying the bytes twice. A |
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66 // temporary area is only needed when parsing utf8 entries in the constant |
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67 // pool and when parsing line number tables. |
0 | 68 |
69 // We add assert in debug mode when class format is not checked. | |
70 | |
71 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
72 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
6868 | 73 #define JAVA_MAX_SUPPORTED_VERSION 52 |
0 | 74 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
75 | |
76 // Used for two backward compatibility reasons: | |
77 // - to check for new additions to the class file format in JDK1.5 | |
78 // - to check for bug fixes in the format checker in JDK1.5 | |
79 #define JAVA_1_5_VERSION 49 | |
80 | |
81 // Used for backward compatibility reasons: | |
82 // - to check for javac bug fixes that happened after 1.5 | |
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83 // - also used as the max version when running in jdk6 |
0 | 84 #define JAVA_6_VERSION 50 |
85 | |
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86 // Used for backward compatibility reasons: |
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87 // - to check NameAndType_info signatures more aggressively |
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88 #define JAVA_7_VERSION 51 |
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89 |
6934 | 90 // Extension method support. |
91 #define JAVA_8_VERSION 52 | |
92 | |
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93 void ClassFileParser::parse_constant_pool_entries(int length, TRAPS) { |
0 | 94 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
95 // this function (_current can be allocated in a register, with scalar | |
96 // replacement of aggregates). The _current pointer is copied back to | |
97 // stream() when this function returns. DON'T call another method within | |
98 // this method that uses stream(). | |
99 ClassFileStream* cfs0 = stream(); | |
100 ClassFileStream cfs1 = *cfs0; | |
101 ClassFileStream* cfs = &cfs1; | |
102 #ifdef ASSERT | |
1685 | 103 assert(cfs->allocated_on_stack(),"should be local"); |
0 | 104 u1* old_current = cfs0->current(); |
105 #endif | |
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106 Handle class_loader(THREAD, _loader_data->class_loader()); |
0 | 107 |
108 // Used for batching symbol allocations. | |
109 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
110 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
111 int indices[SymbolTable::symbol_alloc_batch_size]; | |
112 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
113 int names_count = 0; | |
114 | |
115 // parsing Index 0 is unused | |
116 for (int index = 1; index < length; index++) { | |
117 // Each of the following case guarantees one more byte in the stream | |
118 // for the following tag or the access_flags following constant pool, | |
119 // so we don't need bounds-check for reading tag. | |
120 u1 tag = cfs->get_u1_fast(); | |
121 switch (tag) { | |
122 case JVM_CONSTANT_Class : | |
123 { | |
124 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
125 u2 name_index = cfs->get_u2_fast(); | |
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126 _cp->klass_index_at_put(index, name_index); |
0 | 127 } |
128 break; | |
129 case JVM_CONSTANT_Fieldref : | |
130 { | |
131 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
132 u2 class_index = cfs->get_u2_fast(); | |
133 u2 name_and_type_index = cfs->get_u2_fast(); | |
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134 _cp->field_at_put(index, class_index, name_and_type_index); |
0 | 135 } |
136 break; | |
137 case JVM_CONSTANT_Methodref : | |
138 { | |
139 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
140 u2 class_index = cfs->get_u2_fast(); | |
141 u2 name_and_type_index = cfs->get_u2_fast(); | |
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142 _cp->method_at_put(index, class_index, name_and_type_index); |
0 | 143 } |
144 break; | |
145 case JVM_CONSTANT_InterfaceMethodref : | |
146 { | |
147 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
148 u2 class_index = cfs->get_u2_fast(); | |
149 u2 name_and_type_index = cfs->get_u2_fast(); | |
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150 _cp->interface_method_at_put(index, class_index, name_and_type_index); |
0 | 151 } |
152 break; | |
153 case JVM_CONSTANT_String : | |
154 { | |
155 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
156 u2 string_index = cfs->get_u2_fast(); | |
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157 _cp->string_index_at_put(index, string_index); |
0 | 158 } |
159 break; | |
1602 | 160 case JVM_CONSTANT_MethodHandle : |
161 case JVM_CONSTANT_MethodType : | |
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162 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
1602 | 163 classfile_parse_error( |
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164 "Class file version does not support constant tag %u in class file %s", |
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165 tag, CHECK); |
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166 } |
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167 if (!EnableInvokeDynamic) { |
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168 classfile_parse_error( |
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169 "This JVM does not support constant tag %u in class file %s", |
1602 | 170 tag, CHECK); |
171 } | |
172 if (tag == JVM_CONSTANT_MethodHandle) { | |
173 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
174 u1 ref_kind = cfs->get_u1_fast(); | |
175 u2 method_index = cfs->get_u2_fast(); | |
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176 _cp->method_handle_index_at_put(index, ref_kind, method_index); |
1602 | 177 } else if (tag == JVM_CONSTANT_MethodType) { |
178 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
179 u2 signature_index = cfs->get_u2_fast(); | |
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180 _cp->method_type_index_at_put(index, signature_index); |
1602 | 181 } else { |
182 ShouldNotReachHere(); | |
183 } | |
184 break; | |
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185 case JVM_CONSTANT_InvokeDynamic : |
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186 { |
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187 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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188 classfile_parse_error( |
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189 "Class file version does not support constant tag %u in class file %s", |
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190 tag, CHECK); |
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191 } |
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192 if (!EnableInvokeDynamic) { |
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193 classfile_parse_error( |
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194 "This JVM does not support constant tag %u in class file %s", |
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195 tag, CHECK); |
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196 } |
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197 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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198 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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199 u2 name_and_type_index = cfs->get_u2_fast(); |
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200 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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201 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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202 _cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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203 } |
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204 break; |
0 | 205 case JVM_CONSTANT_Integer : |
206 { | |
207 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
208 u4 bytes = cfs->get_u4_fast(); | |
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209 _cp->int_at_put(index, (jint) bytes); |
0 | 210 } |
211 break; | |
212 case JVM_CONSTANT_Float : | |
213 { | |
214 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
215 u4 bytes = cfs->get_u4_fast(); | |
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216 _cp->float_at_put(index, *(jfloat*)&bytes); |
0 | 217 } |
218 break; | |
219 case JVM_CONSTANT_Long : | |
220 // A mangled type might cause you to overrun allocated memory | |
221 guarantee_property(index+1 < length, | |
222 "Invalid constant pool entry %u in class file %s", | |
223 index, CHECK); | |
224 { | |
225 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
226 u8 bytes = cfs->get_u8_fast(); | |
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227 _cp->long_at_put(index, bytes); |
0 | 228 } |
229 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
230 break; | |
231 case JVM_CONSTANT_Double : | |
232 // A mangled type might cause you to overrun allocated memory | |
233 guarantee_property(index+1 < length, | |
234 "Invalid constant pool entry %u in class file %s", | |
235 index, CHECK); | |
236 { | |
237 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
238 u8 bytes = cfs->get_u8_fast(); | |
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239 _cp->double_at_put(index, *(jdouble*)&bytes); |
0 | 240 } |
241 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
242 break; | |
243 case JVM_CONSTANT_NameAndType : | |
244 { | |
245 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
246 u2 name_index = cfs->get_u2_fast(); | |
247 u2 signature_index = cfs->get_u2_fast(); | |
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248 _cp->name_and_type_at_put(index, name_index, signature_index); |
0 | 249 } |
250 break; | |
251 case JVM_CONSTANT_Utf8 : | |
252 { | |
253 cfs->guarantee_more(2, CHECK); // utf8_length | |
254 u2 utf8_length = cfs->get_u2_fast(); | |
255 u1* utf8_buffer = cfs->get_u1_buffer(); | |
256 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
257 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
258 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
259 cfs->skip_u1_fast(utf8_length); | |
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260 |
0 | 261 // Before storing the symbol, make sure it's legal |
262 if (_need_verify) { | |
263 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
264 } | |
265 | |
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266 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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267 Handle patch = clear_cp_patch_at(index); |
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268 guarantee_property(java_lang_String::is_instance(patch()), |
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269 "Illegal utf8 patch at %d in class file %s", |
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270 index, CHECK); |
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271 char* str = java_lang_String::as_utf8_string(patch()); |
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272 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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273 utf8_buffer = (u1*) str; |
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274 utf8_length = (int) strlen(str); |
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275 } |
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276 |
0 | 277 unsigned int hash; |
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278 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
0 | 279 if (result == NULL) { |
280 names[names_count] = (char*)utf8_buffer; | |
281 lengths[names_count] = utf8_length; | |
282 indices[names_count] = index; | |
283 hashValues[names_count++] = hash; | |
284 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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285 SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 286 names_count = 0; |
287 } | |
288 } else { | |
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289 _cp->symbol_at_put(index, result); |
0 | 290 } |
291 } | |
292 break; | |
293 default: | |
294 classfile_parse_error( | |
295 "Unknown constant tag %u in class file %s", tag, CHECK); | |
296 break; | |
297 } | |
298 } | |
299 | |
300 // Allocate the remaining symbols | |
301 if (names_count > 0) { | |
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302 SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 303 } |
304 | |
305 // Copy _current pointer of local copy back to stream(). | |
306 #ifdef ASSERT | |
307 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
308 #endif | |
309 cfs0->set_current(cfs1.current()); | |
310 } | |
311 | |
312 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } | |
313 | |
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314 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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315 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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316 return cp->symbol_at(index); |
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317 else |
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318 return NULL; |
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319 } |
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320 |
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321 constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) { |
0 | 322 ClassFileStream* cfs = stream(); |
323 constantPoolHandle nullHandle; | |
324 | |
325 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
326 u2 length = cfs->get_u2_fast(); | |
327 guarantee_property( | |
328 length >= 1, "Illegal constant pool size %u in class file %s", | |
329 length, CHECK_(nullHandle)); | |
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330 ConstantPool* constant_pool = ConstantPool::allocate(_loader_data, length, |
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331 CHECK_(nullHandle)); |
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332 _cp = constant_pool; // save in case of errors |
0 | 333 constantPoolHandle cp (THREAD, constant_pool); |
334 | |
335 // parsing constant pool entries | |
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336 parse_constant_pool_entries(length, CHECK_(nullHandle)); |
0 | 337 |
338 int index = 1; // declared outside of loops for portability | |
339 | |
340 // first verification pass - validate cross references and fixup class and string constants | |
341 for (index = 1; index < length; index++) { // Index 0 is unused | |
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342 jbyte tag = cp->tag_at(index).value(); |
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343 switch (tag) { |
0 | 344 case JVM_CONSTANT_Class : |
345 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
346 break; | |
347 case JVM_CONSTANT_Fieldref : | |
348 // fall through | |
349 case JVM_CONSTANT_Methodref : | |
350 // fall through | |
351 case JVM_CONSTANT_InterfaceMethodref : { | |
352 if (!_need_verify) break; | |
353 int klass_ref_index = cp->klass_ref_index_at(index); | |
354 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
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355 check_property(valid_klass_reference_at(klass_ref_index), |
0 | 356 "Invalid constant pool index %u in class file %s", |
357 klass_ref_index, | |
358 CHECK_(nullHandle)); | |
359 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
360 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
361 "Invalid constant pool index %u in class file %s", | |
362 name_and_type_ref_index, | |
363 CHECK_(nullHandle)); | |
364 break; | |
365 } | |
366 case JVM_CONSTANT_String : | |
367 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
368 break; | |
369 case JVM_CONSTANT_Integer : | |
370 break; | |
371 case JVM_CONSTANT_Float : | |
372 break; | |
373 case JVM_CONSTANT_Long : | |
374 case JVM_CONSTANT_Double : | |
375 index++; | |
376 check_property( | |
377 (index < length && cp->tag_at(index).is_invalid()), | |
378 "Improper constant pool long/double index %u in class file %s", | |
379 index, CHECK_(nullHandle)); | |
380 break; | |
381 case JVM_CONSTANT_NameAndType : { | |
382 if (!_need_verify) break; | |
383 int name_ref_index = cp->name_ref_index_at(index); | |
384 int signature_ref_index = cp->signature_ref_index_at(index); | |
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385 check_property(valid_symbol_at(name_ref_index), |
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386 "Invalid constant pool index %u in class file %s", |
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387 name_ref_index, CHECK_(nullHandle)); |
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388 check_property(valid_symbol_at(signature_ref_index), |
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389 "Invalid constant pool index %u in class file %s", |
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390 signature_ref_index, CHECK_(nullHandle)); |
0 | 391 break; |
392 } | |
393 case JVM_CONSTANT_Utf8 : | |
394 break; | |
395 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
396 case JVM_CONSTANT_UnresolvedClassInError: | |
397 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
398 break; | |
399 case JVM_CONSTANT_ClassIndex : | |
400 { | |
401 int class_index = cp->klass_index_at(index); | |
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402 check_property(valid_symbol_at(class_index), |
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403 "Invalid constant pool index %u in class file %s", |
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404 class_index, CHECK_(nullHandle)); |
0 | 405 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); |
406 } | |
407 break; | |
408 case JVM_CONSTANT_StringIndex : | |
409 { | |
410 int string_index = cp->string_index_at(index); | |
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411 check_property(valid_symbol_at(string_index), |
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412 "Invalid constant pool index %u in class file %s", |
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413 string_index, CHECK_(nullHandle)); |
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414 Symbol* sym = cp->symbol_at(string_index); |
0 | 415 cp->unresolved_string_at_put(index, sym); |
416 } | |
417 break; | |
1602 | 418 case JVM_CONSTANT_MethodHandle : |
419 { | |
420 int ref_index = cp->method_handle_index_at(index); | |
421 check_property( | |
422 valid_cp_range(ref_index, length) && | |
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423 EnableInvokeDynamic, |
1602 | 424 "Invalid constant pool index %u in class file %s", |
425 ref_index, CHECK_(nullHandle)); | |
426 constantTag tag = cp->tag_at(ref_index); | |
427 int ref_kind = cp->method_handle_ref_kind_at(index); | |
428 switch (ref_kind) { | |
429 case JVM_REF_getField: | |
430 case JVM_REF_getStatic: | |
431 case JVM_REF_putField: | |
432 case JVM_REF_putStatic: | |
433 check_property( | |
434 tag.is_field(), | |
435 "Invalid constant pool index %u in class file %s (not a field)", | |
436 ref_index, CHECK_(nullHandle)); | |
437 break; | |
438 case JVM_REF_invokeVirtual: | |
439 case JVM_REF_newInvokeSpecial: | |
440 check_property( | |
441 tag.is_method(), | |
442 "Invalid constant pool index %u in class file %s (not a method)", | |
443 ref_index, CHECK_(nullHandle)); | |
444 break; | |
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445 case JVM_REF_invokeStatic: |
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446 case JVM_REF_invokeSpecial: |
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447 check_property( |
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448 tag.is_method() || tag.is_interface_method(), |
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449 "Invalid constant pool index %u in class file %s (not a method)", |
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450 ref_index, CHECK_(nullHandle)); |
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451 break; |
1602 | 452 case JVM_REF_invokeInterface: |
453 check_property( | |
454 tag.is_interface_method(), | |
455 "Invalid constant pool index %u in class file %s (not an interface method)", | |
456 ref_index, CHECK_(nullHandle)); | |
457 break; | |
458 default: | |
459 classfile_parse_error( | |
460 "Bad method handle kind at constant pool index %u in class file %s", | |
461 index, CHECK_(nullHandle)); | |
462 } | |
463 // Keep the ref_index unchanged. It will be indirected at link-time. | |
464 } | |
465 break; | |
466 case JVM_CONSTANT_MethodType : | |
467 { | |
468 int ref_index = cp->method_type_index_at(index); | |
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469 check_property(valid_symbol_at(ref_index) && EnableInvokeDynamic, |
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470 "Invalid constant pool index %u in class file %s", |
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471 ref_index, CHECK_(nullHandle)); |
1602 | 472 } |
473 break; | |
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474 case JVM_CONSTANT_InvokeDynamic : |
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475 { |
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476 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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477 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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478 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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479 "Invalid constant pool index %u in class file %s", |
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480 name_and_type_ref_index, |
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481 CHECK_(nullHandle)); |
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482 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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483 break; |
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484 } |
0 | 485 default: |
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486 fatal(err_msg("bad constant pool tag value %u", |
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487 cp->tag_at(index).value())); |
0 | 488 ShouldNotReachHere(); |
489 break; | |
490 } // end of switch | |
491 } // end of for | |
492 | |
431
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493 if (_cp_patches != NULL) { |
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494 // need to treat this_class specially... |
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495 assert(EnableInvokeDynamic, ""); |
431
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496 int this_class_index; |
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497 { |
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498 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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499 u1* mark = cfs->current(); |
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500 u2 flags = cfs->get_u2_fast(); |
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501 this_class_index = cfs->get_u2_fast(); |
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502 cfs->set_current(mark); // revert to mark |
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503 } |
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504 |
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505 for (index = 1; index < length; index++) { // Index 0 is unused |
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506 if (has_cp_patch_at(index)) { |
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507 guarantee_property(index != this_class_index, |
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508 "Illegal constant pool patch to self at %d in class file %s", |
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509 index, CHECK_(nullHandle)); |
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510 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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511 } |
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512 } |
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513 } |
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514 |
0 | 515 if (!_need_verify) { |
516 return cp; | |
517 } | |
518 | |
519 // second verification pass - checks the strings are of the right format. | |
431
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520 // but not yet to the other entries |
0 | 521 for (index = 1; index < length; index++) { |
522 jbyte tag = cp->tag_at(index).value(); | |
523 switch (tag) { | |
524 case JVM_CONSTANT_UnresolvedClass: { | |
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525 Symbol* class_name = cp->unresolved_klass_at(index); |
431
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526 // check the name, even if _cp_patches will overwrite it |
0 | 527 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
528 break; | |
529 } | |
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530 case JVM_CONSTANT_NameAndType: { |
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531 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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532 int sig_index = cp->signature_ref_index_at(index); |
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533 int name_index = cp->name_ref_index_at(index); |
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534 Symbol* name = cp->symbol_at(name_index); |
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535 Symbol* sig = cp->symbol_at(sig_index); |
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536 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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537 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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538 } else { |
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539 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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540 } |
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541 } |
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542 break; |
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543 } |
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544 case JVM_CONSTANT_InvokeDynamic: |
0 | 545 case JVM_CONSTANT_Fieldref: |
546 case JVM_CONSTANT_Methodref: | |
547 case JVM_CONSTANT_InterfaceMethodref: { | |
548 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
549 // already verified to be utf8 | |
550 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
551 // already verified to be utf8 | |
552 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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553 Symbol* name = cp->symbol_at(name_ref_index); |
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554 Symbol* signature = cp->symbol_at(signature_ref_index); |
0 | 555 if (tag == JVM_CONSTANT_Fieldref) { |
556 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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557 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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558 // Signature is verified above, when iterating NameAndType_info. |
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559 // Need only to be sure it's the right type. |
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560 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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561 throwIllegalSignature( |
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562 "Field", name, signature, CHECK_(nullHandle)); |
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563 } |
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564 } else { |
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565 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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566 } |
0 | 567 } else { |
568 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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569 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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570 // Signature is verified above, when iterating NameAndType_info. |
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571 // Need only to be sure it's the right type. |
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572 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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573 throwIllegalSignature( |
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574 "Method", name, signature, CHECK_(nullHandle)); |
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575 } |
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576 } else { |
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577 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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578 } |
0 | 579 if (tag == JVM_CONSTANT_Methodref) { |
580 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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581 assert(name != NULL, "method name in constant pool is null"); |
0 | 582 unsigned int name_len = name->utf8_length(); |
583 assert(name_len > 0, "bad method name"); // already verified as legal name | |
584 if (name->byte_at(0) == '<') { | |
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585 if (name != vmSymbols::object_initializer_name()) { |
0 | 586 classfile_parse_error( |
587 "Bad method name at constant pool index %u in class file %s", | |
588 name_ref_index, CHECK_(nullHandle)); | |
589 } | |
590 } | |
591 } | |
592 } | |
593 break; | |
594 } | |
1602 | 595 case JVM_CONSTANT_MethodHandle: { |
596 int ref_index = cp->method_handle_index_at(index); | |
597 int ref_kind = cp->method_handle_ref_kind_at(index); | |
598 switch (ref_kind) { | |
599 case JVM_REF_invokeVirtual: | |
600 case JVM_REF_invokeStatic: | |
601 case JVM_REF_invokeSpecial: | |
602 case JVM_REF_newInvokeSpecial: | |
603 { | |
604 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
605 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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606 Symbol* name = cp->symbol_at(name_ref_index); |
1602 | 607 if (ref_kind == JVM_REF_newInvokeSpecial) { |
2177
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608 if (name != vmSymbols::object_initializer_name()) { |
1602 | 609 classfile_parse_error( |
610 "Bad constructor name at constant pool index %u in class file %s", | |
611 name_ref_index, CHECK_(nullHandle)); | |
612 } | |
613 } else { | |
2177
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614 if (name == vmSymbols::object_initializer_name()) { |
1602 | 615 classfile_parse_error( |
616 "Bad method name at constant pool index %u in class file %s", | |
617 name_ref_index, CHECK_(nullHandle)); | |
618 } | |
619 } | |
620 } | |
621 break; | |
622 // Other ref_kinds are already fully checked in previous pass. | |
623 } | |
624 break; | |
625 } | |
626 case JVM_CONSTANT_MethodType: { | |
2177
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627 Symbol* no_name = vmSymbols::type_name(); // place holder |
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628 Symbol* signature = cp->method_type_signature_at(index); |
1602 | 629 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
630 break; | |
631 } | |
2177
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632 case JVM_CONSTANT_Utf8: { |
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633 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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634 } |
0 | 635 } // end of switch |
636 } // end of for | |
637 | |
638 return cp; | |
639 } | |
640 | |
641 | |
431
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642 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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643 assert(EnableInvokeDynamic, ""); |
431
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644 BasicType patch_type = T_VOID; |
6725
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645 |
431
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646 switch (cp->tag_at(index).value()) { |
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647 |
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648 case JVM_CONSTANT_UnresolvedClass : |
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649 // Patching a class means pre-resolving it. |
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650 // The name in the constant pool is ignored. |
1602 | 651 if (java_lang_Class::is_instance(patch())) { |
431
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652 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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653 "Illegal class patch at %d in class file %s", |
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654 index, CHECK); |
6725
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655 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
431
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656 } else { |
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657 guarantee_property(java_lang_String::is_instance(patch()), |
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658 "Illegal class patch at %d in class file %s", |
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659 index, CHECK); |
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660 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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661 cp->unresolved_klass_at_put(index, name); |
431
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662 } |
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663 break; |
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664 |
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665 case JVM_CONSTANT_String : |
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666 // skip this patch and don't clear it. Needs the oop array for resolved |
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667 // references to be created first. |
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668 return; |
431
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669 |
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670 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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671 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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672 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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673 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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674 patch_prim: |
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675 { |
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676 jvalue value; |
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677 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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678 guarantee_property(value_type == patch_type, |
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679 "Illegal primitive patch at %d in class file %s", |
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680 index, CHECK); |
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681 switch (value_type) { |
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682 case T_INT: cp->int_at_put(index, value.i); break; |
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683 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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684 case T_LONG: cp->long_at_put(index, value.j); break; |
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685 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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686 default: assert(false, ""); |
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687 } |
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688 } |
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689 break; |
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690 |
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691 default: |
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692 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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693 guarantee_property(!has_cp_patch_at(index), |
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694 "Illegal unexpected patch at %d in class file %s", |
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695 index, CHECK); |
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696 return; |
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697 } |
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698 |
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699 // On fall-through, mark the patch as used. |
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700 clear_cp_patch_at(index); |
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701 } |
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702 |
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703 |
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704 |
0 | 705 class NameSigHash: public ResourceObj { |
706 public: | |
2177
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707 Symbol* _name; // name |
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708 Symbol* _sig; // signature |
0 | 709 NameSigHash* _next; // Next entry in hash table |
710 }; | |
711 | |
712 | |
713 #define HASH_ROW_SIZE 256 | |
714 | |
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715 unsigned int hash(Symbol* name, Symbol* sig) { |
0 | 716 unsigned int raw_hash = 0; |
717 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
718 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
719 | |
720 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
721 } | |
722 | |
723 | |
724 void initialize_hashtable(NameSigHash** table) { | |
725 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
726 } | |
727 | |
728 // Return false if the name/sig combination is found in table. | |
729 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
730 // The old format checker uses heap sort to find duplicates. | |
731 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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732 // of table since we don't expect Symbol*'s to move. |
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733 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
0 | 734 assert(name != NULL, "name in constant pool is NULL"); |
735 | |
736 // First lookup for duplicates | |
737 int index = hash(name, sig); | |
738 NameSigHash* entry = table[index]; | |
739 while (entry != NULL) { | |
740 if (entry->_name == name && entry->_sig == sig) { | |
741 return false; | |
742 } | |
743 entry = entry->_next; | |
744 } | |
745 | |
746 // No duplicate is found, allocate a new entry and fill it. | |
747 entry = new NameSigHash(); | |
748 entry->_name = name; | |
749 entry->_sig = sig; | |
750 | |
751 // Insert into hash table | |
752 entry->_next = table[index]; | |
753 table[index] = entry; | |
754 | |
755 return true; | |
756 } | |
757 | |
758 | |
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759 Array<Klass*>* ClassFileParser::parse_interfaces(int length, |
0 | 760 Handle protection_domain, |
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761 Symbol* class_name, |
6934 | 762 bool* has_default_methods, |
0 | 763 TRAPS) { |
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764 if (length == 0) { |
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765 _local_interfaces = Universe::the_empty_klass_array(); |
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766 } else { |
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767 ClassFileStream* cfs = stream(); |
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768 assert(length > 0, "only called for length>0"); |
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769 _local_interfaces = MetadataFactory::new_array<Klass*>(_loader_data, length, NULL, CHECK_NULL); |
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770 |
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771 int index; |
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772 for (index = 0; index < length; index++) { |
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773 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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774 KlassHandle interf; |
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775 check_property( |
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776 valid_klass_reference_at(interface_index), |
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777 "Interface name has bad constant pool index %u in class file %s", |
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778 interface_index, CHECK_NULL); |
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779 if (_cp->tag_at(interface_index).is_klass()) { |
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780 interf = KlassHandle(THREAD, _cp->resolved_klass_at(interface_index)); |
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781 } else { |
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782 Symbol* unresolved_klass = _cp->klass_name_at(interface_index); |
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783 |
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784 // Don't need to check legal name because it's checked when parsing constant pool. |
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785 // But need to make sure it's not an array type. |
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786 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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787 "Bad interface name in class file %s", CHECK_NULL); |
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788 Handle class_loader(THREAD, _loader_data->class_loader()); |
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789 |
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790 // Call resolve_super so classcircularity is checked |
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791 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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792 unresolved_klass, class_loader, protection_domain, |
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793 false, CHECK_NULL); |
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794 interf = KlassHandle(THREAD, k); |
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795 } |
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796 |
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797 if (!interf()->is_interface()) { |
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798 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
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799 } |
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800 if (InstanceKlass::cast(interf())->has_default_methods()) { |
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801 *has_default_methods = true; |
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802 } |
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803 _local_interfaces->at_put(index, interf()); |
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804 } |
0 | 805 |
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806 if (!_need_verify || length <= 1) { |
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807 return _local_interfaces; |
6934 | 808 } |
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809 |
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810 // Check if there's any duplicates in interfaces |
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811 ResourceMark rm(THREAD); |
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812 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( |
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813 THREAD, NameSigHash*, HASH_ROW_SIZE); |
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814 initialize_hashtable(interface_names); |
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815 bool dup = false; |
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816 { |
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817 debug_only(No_Safepoint_Verifier nsv;) |
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818 for (index = 0; index < length; index++) { |
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819 Klass* k = _local_interfaces->at(index); |
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820 Symbol* name = InstanceKlass::cast(k)->name(); |
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821 // If no duplicates, add (name, NULL) in hashtable interface_names. |
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822 if (!put_after_lookup(name, NULL, interface_names)) { |
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823 dup = true; |
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824 break; |
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825 } |
0 | 826 } |
827 } | |
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828 if (dup) { |
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829 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
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830 } |
0 | 831 } |
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832 return _local_interfaces; |
0 | 833 } |
834 | |
835 | |
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836 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, TRAPS) { |
0 | 837 // Make sure the constant pool entry is of a type appropriate to this field |
838 guarantee_property( | |
839 (constantvalue_index > 0 && | |
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840 constantvalue_index < _cp->length()), |
0 | 841 "Bad initial value index %u in ConstantValue attribute in class file %s", |
842 constantvalue_index, CHECK); | |
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843 constantTag value_type = _cp->tag_at(constantvalue_index); |
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844 switch ( _cp->basic_type_for_signature_at(signature_index) ) { |
0 | 845 case T_LONG: |
846 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
847 break; | |
848 case T_FLOAT: | |
849 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
850 break; | |
851 case T_DOUBLE: | |
852 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
853 break; | |
854 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
855 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
856 break; | |
857 case T_OBJECT: | |
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858 guarantee_property((_cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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859 && value_type.is_string()), |
0 | 860 "Bad string initial value in class file %s", CHECK); |
861 break; | |
862 default: | |
863 classfile_parse_error( | |
864 "Unable to set initial value %u in class file %s", | |
865 constantvalue_index, CHECK); | |
866 } | |
867 } | |
868 | |
869 | |
870 // Parse attributes for a field. | |
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871 void ClassFileParser::parse_field_attributes(u2 attributes_count, |
0 | 872 bool is_static, u2 signature_index, |
873 u2* constantvalue_index_addr, | |
874 bool* is_synthetic_addr, | |
875 u2* generic_signature_index_addr, | |
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876 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
0 | 877 TRAPS) { |
878 ClassFileStream* cfs = stream(); | |
879 assert(attributes_count > 0, "length should be greater than 0"); | |
880 u2 constantvalue_index = 0; | |
881 u2 generic_signature_index = 0; | |
882 bool is_synthetic = false; | |
883 u1* runtime_visible_annotations = NULL; | |
884 int runtime_visible_annotations_length = 0; | |
885 u1* runtime_invisible_annotations = NULL; | |
886 int runtime_invisible_annotations_length = 0; | |
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887 u1* runtime_visible_type_annotations = NULL; |
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888 int runtime_visible_type_annotations_length = 0; |
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889 u1* runtime_invisible_type_annotations = NULL; |
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890 int runtime_invisible_type_annotations_length = 0; |
0 | 891 while (attributes_count--) { |
892 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
893 u2 attribute_name_index = cfs->get_u2_fast(); | |
894 u4 attribute_length = cfs->get_u4_fast(); | |
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895 check_property(valid_symbol_at(attribute_name_index), |
0 | 896 "Invalid field attribute index %u in class file %s", |
897 attribute_name_index, | |
898 CHECK); | |
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899 Symbol* attribute_name = _cp->symbol_at(attribute_name_index); |
0 | 900 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
901 // ignore if non-static | |
902 if (constantvalue_index != 0) { | |
903 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
904 } | |
905 check_property( | |
906 attribute_length == 2, | |
907 "Invalid ConstantValue field attribute length %u in class file %s", | |
908 attribute_length, CHECK); | |
909 constantvalue_index = cfs->get_u2(CHECK); | |
910 if (_need_verify) { | |
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911 verify_constantvalue(constantvalue_index, signature_index, CHECK); |
0 | 912 } |
913 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
914 if (attribute_length != 0) { | |
915 classfile_parse_error( | |
916 "Invalid Synthetic field attribute length %u in class file %s", | |
917 attribute_length, CHECK); | |
918 } | |
919 is_synthetic = true; | |
920 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
921 if (attribute_length != 0) { | |
922 classfile_parse_error( | |
923 "Invalid Deprecated field attribute length %u in class file %s", | |
924 attribute_length, CHECK); | |
925 } | |
926 } else if (_major_version >= JAVA_1_5_VERSION) { | |
927 if (attribute_name == vmSymbols::tag_signature()) { | |
928 if (attribute_length != 2) { | |
929 classfile_parse_error( | |
930 "Wrong size %u for field's Signature attribute in class file %s", | |
931 attribute_length, CHECK); | |
932 } | |
933 generic_signature_index = cfs->get_u2(CHECK); | |
934 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
935 runtime_visible_annotations_length = attribute_length; | |
936 runtime_visible_annotations = cfs->get_u1_buffer(); | |
937 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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938 parse_annotations(runtime_visible_annotations, |
7587 | 939 runtime_visible_annotations_length, |
940 parsed_annotations, | |
941 CHECK); | |
0 | 942 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
943 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
944 runtime_invisible_annotations_length = attribute_length; | |
945 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
946 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
947 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
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948 } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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949 runtime_visible_type_annotations_length = attribute_length; |
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950 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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951 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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952 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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953 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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954 runtime_invisible_type_annotations_length = attribute_length; |
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955 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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956 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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957 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 958 } else { |
959 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
960 } | |
961 } else { | |
962 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
963 } | |
964 } | |
965 | |
966 *constantvalue_index_addr = constantvalue_index; | |
967 *is_synthetic_addr = is_synthetic; | |
968 *generic_signature_index_addr = generic_signature_index; | |
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969 AnnotationArray* a = assemble_annotations(runtime_visible_annotations, |
0 | 970 runtime_visible_annotations_length, |
971 runtime_invisible_annotations, | |
972 runtime_invisible_annotations_length, | |
973 CHECK); | |
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974 parsed_annotations->set_field_annotations(a); |
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975 a = assemble_annotations(runtime_visible_type_annotations, |
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976 runtime_visible_type_annotations_length, |
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977 runtime_invisible_type_annotations, |
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978 runtime_invisible_type_annotations_length, |
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979 CHECK); |
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980 parsed_annotations->set_field_type_annotations(a); |
0 | 981 return; |
982 } | |
983 | |
984 | |
985 // Field allocation types. Used for computing field offsets. | |
986 | |
987 enum FieldAllocationType { | |
988 STATIC_OOP, // Oops | |
989 STATIC_BYTE, // Boolean, Byte, char | |
990 STATIC_SHORT, // shorts | |
991 STATIC_WORD, // ints | |
3938 | 992 STATIC_DOUBLE, // aligned long or double |
0 | 993 NONSTATIC_OOP, |
994 NONSTATIC_BYTE, | |
995 NONSTATIC_SHORT, | |
996 NONSTATIC_WORD, | |
997 NONSTATIC_DOUBLE, | |
3938 | 998 MAX_FIELD_ALLOCATION_TYPE, |
999 BAD_ALLOCATION_TYPE = -1 | |
0 | 1000 }; |
1001 | |
3938 | 1002 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
1003 BAD_ALLOCATION_TYPE, // 0 | |
1004 BAD_ALLOCATION_TYPE, // 1 | |
1005 BAD_ALLOCATION_TYPE, // 2 | |
1006 BAD_ALLOCATION_TYPE, // 3 | |
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1007 NONSTATIC_BYTE , // T_BOOLEAN = 4, |
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1008 NONSTATIC_SHORT, // T_CHAR = 5, |
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1009 NONSTATIC_WORD, // T_FLOAT = 6, |
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1010 NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
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1011 NONSTATIC_BYTE, // T_BYTE = 8, |
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1012 NONSTATIC_SHORT, // T_SHORT = 9, |
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1013 NONSTATIC_WORD, // T_INT = 10, |
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1014 NONSTATIC_DOUBLE, // T_LONG = 11, |
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1015 NONSTATIC_OOP, // T_OBJECT = 12, |
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1016 NONSTATIC_OOP, // T_ARRAY = 13, |
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1017 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1018 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1019 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1020 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1021 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1022 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
3938 | 1023 BAD_ALLOCATION_TYPE, // 0 |
1024 BAD_ALLOCATION_TYPE, // 1 | |
1025 BAD_ALLOCATION_TYPE, // 2 | |
1026 BAD_ALLOCATION_TYPE, // 3 | |
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1027 STATIC_BYTE , // T_BOOLEAN = 4, |
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1028 STATIC_SHORT, // T_CHAR = 5, |
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1029 STATIC_WORD, // T_FLOAT = 6, |
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1030 STATIC_DOUBLE, // T_DOUBLE = 7, |
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1031 STATIC_BYTE, // T_BYTE = 8, |
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1032 STATIC_SHORT, // T_SHORT = 9, |
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1033 STATIC_WORD, // T_INT = 10, |
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1034 STATIC_DOUBLE, // T_LONG = 11, |
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1035 STATIC_OOP, // T_OBJECT = 12, |
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1036 STATIC_OOP, // T_ARRAY = 13, |
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1037 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1038 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1039 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1040 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1041 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1042 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
0 | 1043 }; |
1044 | |
3938 | 1045 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
1046 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
1047 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
1048 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
1049 return result; | |
1050 } | |
1051 | |
1052 class FieldAllocationCount: public ResourceObj { | |
1053 public: | |
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1054 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
3938 | 1055 |
1056 FieldAllocationCount() { | |
1057 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
1058 count[i] = 0; | |
1059 } | |
1060 } | |
1061 | |
1062 FieldAllocationType update(bool is_static, BasicType type) { | |
1063 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1064 // Make sure there is no overflow with injected fields. |
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1065 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
3938 | 1066 count[atype]++; |
1067 return atype; | |
1068 } | |
1069 }; | |
1070 | |
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1071 Array<u2>* ClassFileParser::parse_fields(Symbol* class_name, |
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1072 bool is_interface, |
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1073 FieldAllocationCount *fac, |
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1074 u2* java_fields_count_ptr, TRAPS) { |
0 | 1075 ClassFileStream* cfs = stream(); |
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1076 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 1077 u2 length = cfs->get_u2_fast(); |
3938 | 1078 *java_fields_count_ptr = length; |
1079 | |
1080 int num_injected = 0; | |
1081 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1082 int total_fields = length + num_injected; |
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1083 |
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1084 // The field array starts with tuples of shorts |
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1085 // [access, name index, sig index, initial value index, byte offset]. |
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1086 // A generic signature slot only exists for field with generic |
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1087 // signature attribute. And the access flag is set with |
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1088 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1089 // signature slots are at the end of the field array and after all |
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1090 // other fields data. |
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1091 // |
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1092 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1093 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1094 // ... |
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1095 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1096 // [generic signature index] |
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1097 // [generic signature index] |
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1098 // ... |
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1099 // |
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1100 // Allocate a temporary resource array for field data. For each field, |
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1101 // a slot is reserved in the temporary array for the generic signature |
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1102 // index. After parsing all fields, the data are copied to a permanent |
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1103 // array and any unused slots will be discarded. |
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1104 ResourceMark rm(THREAD); |
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1105 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1106 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
0 | 1107 |
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1108 // The generic signature slots start after all other fields' data. |
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1109 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1110 int num_generic_signature = 0; |
0 | 1111 for (int n = 0; n < length; n++) { |
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1112 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
0 | 1113 |
1114 AccessFlags access_flags; | |
1115 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1116 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
0 | 1117 access_flags.set_flags(flags); |
1118 | |
1119 u2 name_index = cfs->get_u2_fast(); | |
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1120 int cp_size = _cp->length(); |
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1121 check_property(valid_symbol_at(name_index), |
0 | 1122 "Invalid constant pool index %u for field name in class file %s", |
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1123 name_index, |
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1124 CHECK_NULL); |
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1125 Symbol* name = _cp->symbol_at(name_index); |
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1126 verify_legal_field_name(name, CHECK_NULL); |
0 | 1127 |
1128 u2 signature_index = cfs->get_u2_fast(); | |
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1129 check_property(valid_symbol_at(signature_index), |
0 | 1130 "Invalid constant pool index %u for field signature in class file %s", |
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1131 signature_index, CHECK_NULL); |
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1132 Symbol* sig = _cp->symbol_at(signature_index); |
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1133 verify_legal_field_signature(name, sig, CHECK_NULL); |
0 | 1134 |
1135 u2 constantvalue_index = 0; | |
1136 bool is_synthetic = false; | |
1137 u2 generic_signature_index = 0; | |
1138 bool is_static = access_flags.is_static(); | |
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1139 FieldAnnotationCollector parsed_annotations(_loader_data); |
0 | 1140 |
1141 u2 attributes_count = cfs->get_u2_fast(); | |
1142 if (attributes_count > 0) { | |
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1143 parse_field_attributes(attributes_count, is_static, signature_index, |
0 | 1144 &constantvalue_index, &is_synthetic, |
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1145 &generic_signature_index, &parsed_annotations, |
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1146 CHECK_NULL); |
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1147 if (parsed_annotations.field_annotations() != NULL) { |
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1148 if (_fields_annotations == NULL) { |
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1149 _fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1150 _loader_data, length, NULL, |
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1151 CHECK_NULL); |
0 | 1152 } |
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1153 _fields_annotations->at_put(n, parsed_annotations.field_annotations()); |
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1154 parsed_annotations.set_field_annotations(NULL); |
0 | 1155 } |
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1156 if (parsed_annotations.field_type_annotations() != NULL) { |
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1157 if (_fields_type_annotations == NULL) { |
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1158 _fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1159 _loader_data, length, NULL, |
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1160 CHECK_NULL); |
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1161 } |
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1162 _fields_type_annotations->at_put(n, parsed_annotations.field_type_annotations()); |
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1163 parsed_annotations.set_field_type_annotations(NULL); |
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1164 } |
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1165 |
0 | 1166 if (is_synthetic) { |
1167 access_flags.set_is_synthetic(); | |
1168 } | |
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1169 if (generic_signature_index != 0) { |
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1170 access_flags.set_field_has_generic_signature(); |
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1171 fa[generic_signature_slot] = generic_signature_index; |
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1172 generic_signature_slot ++; |
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1173 num_generic_signature ++; |
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1174 } |
0 | 1175 } |
1176 | |
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1177 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
3938 | 1178 field->initialize(access_flags.as_short(), |
1179 name_index, | |
1180 signature_index, | |
7587 | 1181 constantvalue_index); |
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1182 BasicType type = _cp->basic_type_for_signature_at(signature_index); |
0 | 1183 |
1184 // Remember how many oops we encountered and compute allocation type | |
3938 | 1185 FieldAllocationType atype = fac->update(is_static, type); |
7587 | 1186 field->set_allocation_type(atype); |
1187 | |
1188 // After field is initialized with type, we can augment it with aux info | |
1189 if (parsed_annotations.has_any_annotations()) | |
1190 parsed_annotations.apply_to(field); | |
3938 | 1191 } |
1192 | |
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1193 int index = length; |
3938 | 1194 if (num_injected != 0) { |
1195 for (int n = 0; n < num_injected; n++) { | |
1196 // Check for duplicates | |
1197 if (injected[n].may_be_java) { | |
1198 Symbol* name = injected[n].name(); | |
1199 Symbol* signature = injected[n].signature(); | |
1200 bool duplicate = false; | |
1201 for (int i = 0; i < length; i++) { | |
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1202 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
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1203 if (name == _cp->symbol_at(f->name_index()) && |
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1204 signature == _cp->symbol_at(f->signature_index())) { |
3938 | 1205 // Symbol is desclared in Java so skip this one |
1206 duplicate = true; | |
1207 break; | |
1208 } | |
1209 } | |
1210 if (duplicate) { | |
1211 // These will be removed from the field array at the end | |
1212 continue; | |
1213 } | |
1214 } | |
1215 | |
1216 // Injected field | |
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1217 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
3938 | 1218 field->initialize(JVM_ACC_FIELD_INTERNAL, |
1219 injected[n].name_index, | |
1220 injected[n].signature_index, | |
1221 0); | |
1222 | |
1223 BasicType type = FieldType::basic_type(injected[n].signature()); | |
1224 | |
1225 // Remember how many oops we encountered and compute allocation type | |
1226 FieldAllocationType atype = fac->update(false, type); | |
7587 | 1227 field->set_allocation_type(atype); |
3938 | 1228 index++; |
1229 } | |
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1230 } |
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1231 |
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1232 // Now copy the fields' data from the temporary resource array. |
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1233 // Sometimes injected fields already exist in the Java source so |
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1234 // the fields array could be too long. In that case the |
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1235 // fields array is trimed. Also unused slots that were reserved |
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1236 // for generic signature indexes are discarded. |
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1237 Array<u2>* fields = MetadataFactory::new_array<u2>( |
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1238 _loader_data, index * FieldInfo::field_slots + num_generic_signature, |
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1239 CHECK_NULL); |
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1240 _fields = fields; // save in case of error |
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1241 { |
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1242 int i = 0; |
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1243 for (; i < index * FieldInfo::field_slots; i++) { |
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1244 fields->at_put(i, fa[i]); |
3938 | 1245 } |
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1246 for (int j = total_fields * FieldInfo::field_slots; |
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1247 j < generic_signature_slot; j++) { |
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1248 fields->at_put(i++, fa[j]); |
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1249 } |
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1250 assert(i == fields->length(), ""); |
0 | 1251 } |
1252 | |
1253 if (_need_verify && length > 1) { | |
1254 // Check duplicated fields | |
1255 ResourceMark rm(THREAD); | |
1256 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1257 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
1258 initialize_hashtable(names_and_sigs); | |
1259 bool dup = false; | |
1260 { | |
1261 debug_only(No_Safepoint_Verifier nsv;) | |
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1262 for (AllFieldStream fs(fields, _cp); !fs.done(); fs.next()) { |
3938 | 1263 Symbol* name = fs.name(); |
1264 Symbol* sig = fs.signature(); | |
0 | 1265 // If no duplicates, add name/signature in hashtable names_and_sigs. |
1266 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
1267 dup = true; | |
1268 break; | |
1269 } | |
1270 } | |
1271 } | |
1272 if (dup) { | |
1273 classfile_parse_error("Duplicate field name&signature in class file %s", | |
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1274 CHECK_NULL); |
0 | 1275 } |
1276 } | |
1277 | |
1278 return fields; | |
1279 } | |
1280 | |
1281 | |
1282 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
1283 while (length-- > 0) { | |
1284 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
1285 } | |
1286 } | |
1287 | |
1288 | |
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1289 u2* ClassFileParser::parse_exception_table(u4 code_length, |
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1290 u4 exception_table_length, |
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1291 TRAPS) { |
0 | 1292 ClassFileStream* cfs = stream(); |
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1293 |
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1294 u2* exception_table_start = cfs->get_u2_buffer(); |
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1295 assert(exception_table_start != NULL, "null exception table"); |
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1296 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1297 // Will check legal target after parsing code array in verifier. |
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1298 if (_need_verify) { |
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1299 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1300 u2 start_pc = cfs->get_u2_fast(); |
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1301 u2 end_pc = cfs->get_u2_fast(); |
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1302 u2 handler_pc = cfs->get_u2_fast(); |
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1303 u2 catch_type_index = cfs->get_u2_fast(); |
0 | 1304 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1305 "Illegal exception table range in class file %s", |
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1306 CHECK_NULL); |
0 | 1307 guarantee_property(handler_pc < code_length, |
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1308 "Illegal exception table handler in class file %s", |
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1309 CHECK_NULL); |
0 | 1310 if (catch_type_index != 0) { |
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1311 guarantee_property(valid_klass_reference_at(catch_type_index), |
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1312 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
0 | 1313 } |
1314 } | |
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1315 } else { |
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1316 cfs->skip_u2_fast(exception_table_length * 4); |
0 | 1317 } |
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1318 return exception_table_start; |
0 | 1319 } |
1320 | |
1321 void ClassFileParser::parse_linenumber_table( | |
1322 u4 code_attribute_length, u4 code_length, | |
1323 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
1324 ClassFileStream* cfs = stream(); | |
1325 unsigned int num_entries = cfs->get_u2(CHECK); | |
1326 | |
1327 // Each entry is a u2 start_pc, and a u2 line_number | |
1328 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
1329 | |
1330 // Verify line number attribute and table length | |
1331 check_property( | |
1332 code_attribute_length == sizeof(u2) + length_in_bytes, | |
1333 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
1334 | |
1335 cfs->guarantee_more(length_in_bytes, CHECK); | |
1336 | |
1337 if ((*write_stream) == NULL) { | |
1338 if (length_in_bytes > fixed_buffer_size) { | |
1339 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
1340 } else { | |
1341 (*write_stream) = new CompressedLineNumberWriteStream( | |
1342 linenumbertable_buffer, fixed_buffer_size); | |
1343 } | |
1344 } | |
1345 | |
1346 while (num_entries-- > 0) { | |
1347 u2 bci = cfs->get_u2_fast(); // start_pc | |
1348 u2 line = cfs->get_u2_fast(); // line_number | |
1349 guarantee_property(bci < code_length, | |
1350 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
1351 (*write_stream)->write_pair(bci, line); | |
1352 } | |
1353 } | |
1354 | |
1355 | |
1356 // Class file LocalVariableTable elements. | |
1357 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
1358 public: | |
1359 u2 start_bci; | |
1360 u2 length; | |
1361 u2 name_cp_index; | |
1362 u2 descriptor_cp_index; | |
1363 u2 slot; | |
1364 }; | |
1365 | |
1366 | |
6197 | 1367 class LVT_Hash: public CHeapObj<mtClass> { |
0 | 1368 public: |
1369 LocalVariableTableElement *_elem; // element | |
1370 LVT_Hash* _next; // Next entry in hash table | |
1371 }; | |
1372 | |
1373 unsigned int hash(LocalVariableTableElement *elem) { | |
1374 unsigned int raw_hash = elem->start_bci; | |
1375 | |
1376 raw_hash = elem->length + raw_hash * 37; | |
1377 raw_hash = elem->name_cp_index + raw_hash * 37; | |
1378 raw_hash = elem->slot + raw_hash * 37; | |
1379 | |
1380 return raw_hash % HASH_ROW_SIZE; | |
1381 } | |
1382 | |
1383 void initialize_hashtable(LVT_Hash** table) { | |
1384 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1385 table[i] = NULL; | |
1386 } | |
1387 } | |
1388 | |
1389 void clear_hashtable(LVT_Hash** table) { | |
1390 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1391 LVT_Hash* current = table[i]; | |
1392 LVT_Hash* next; | |
1393 while (current != NULL) { | |
1394 next = current->_next; | |
1395 current->_next = NULL; | |
1396 delete(current); | |
1397 current = next; | |
1398 } | |
1399 table[i] = NULL; | |
1400 } | |
1401 } | |
1402 | |
1403 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
1404 LVT_Hash* entry = table[index]; | |
1405 | |
1406 /* | |
1407 * 3-tuple start_bci/length/slot has to be unique key, | |
1408 * so the following comparison seems to be redundant: | |
1409 * && elem->name_cp_index == entry->_elem->name_cp_index | |
1410 */ | |
1411 while (entry != NULL) { | |
1412 if (elem->start_bci == entry->_elem->start_bci | |
1413 && elem->length == entry->_elem->length | |
1414 && elem->name_cp_index == entry->_elem->name_cp_index | |
1415 && elem->slot == entry->_elem->slot | |
1416 ) { | |
1417 return entry; | |
1418 } | |
1419 entry = entry->_next; | |
1420 } | |
1421 return NULL; | |
1422 } | |
1423 | |
1424 // Return false if the local variable is found in table. | |
1425 // Return true if no duplicate is found. | |
1426 // And local variable is added as a new entry in table. | |
1427 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
1428 // First lookup for duplicates | |
1429 int index = hash(elem); | |
1430 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
1431 | |
1432 if (entry != NULL) { | |
1433 return false; | |
1434 } | |
1435 // No duplicate is found, allocate a new entry and fill it. | |
1436 if ((entry = new LVT_Hash()) == NULL) { | |
1437 return false; | |
1438 } | |
1439 entry->_elem = elem; | |
1440 | |
1441 // Insert into hash table | |
1442 entry->_next = table[index]; | |
1443 table[index] = entry; | |
1444 | |
1445 return true; | |
1446 } | |
1447 | |
1448 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
1449 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
1450 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
1451 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
1452 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
1453 lvt->signature_cp_index = 0; | |
1454 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
1455 } | |
1456 | |
1457 // Function is used to parse both attributes: | |
1458 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
1459 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
1460 u2 max_locals, | |
1461 u4 code_attribute_length, | |
1462 u2* localvariable_table_length, | |
1463 bool isLVTT, | |
1464 TRAPS) { | |
1465 ClassFileStream* cfs = stream(); | |
1466 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
1467 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
1468 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
1469 // Verify local variable table attribute has right length | |
1470 if (_need_verify) { | |
1471 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
1472 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
1473 } | |
1474 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
1475 assert(localvariable_table_start != NULL, "null local variable table"); | |
1476 if (!_need_verify) { | |
1477 cfs->skip_u2_fast(size); | |
1478 } else { | |
1479 cfs->guarantee_more(size * 2, CHECK_NULL); | |
1480 for(int i = 0; i < (*localvariable_table_length); i++) { | |
1481 u2 start_pc = cfs->get_u2_fast(); | |
1482 u2 length = cfs->get_u2_fast(); | |
1483 u2 name_index = cfs->get_u2_fast(); | |
1484 u2 descriptor_index = cfs->get_u2_fast(); | |
1485 u2 index = cfs->get_u2_fast(); | |
1486 // Assign to a u4 to avoid overflow | |
1487 u4 end_pc = (u4)start_pc + (u4)length; | |
1488 | |
1489 if (start_pc >= code_length) { | |
1490 classfile_parse_error( | |
1491 "Invalid start_pc %u in %s in class file %s", | |
1492 start_pc, tbl_name, CHECK_NULL); | |
1493 } | |
1494 if (end_pc > code_length) { | |
1495 classfile_parse_error( | |
1496 "Invalid length %u in %s in class file %s", | |
1497 length, tbl_name, CHECK_NULL); | |
1498 } | |
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1499 int cp_size = _cp->length(); |
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1500 guarantee_property(valid_symbol_at(name_index), |
0 | 1501 "Name index %u in %s has bad constant type in class file %s", |
1502 name_index, tbl_name, CHECK_NULL); | |
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1503 guarantee_property(valid_symbol_at(descriptor_index), |
0 | 1504 "Signature index %u in %s has bad constant type in class file %s", |
1505 descriptor_index, tbl_name, CHECK_NULL); | |
1506 | |
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1507 Symbol* name = _cp->symbol_at(name_index); |
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1508 Symbol* sig = _cp->symbol_at(descriptor_index); |
0 | 1509 verify_legal_field_name(name, CHECK_NULL); |
1510 u2 extra_slot = 0; | |
1511 if (!isLVTT) { | |
1512 verify_legal_field_signature(name, sig, CHECK_NULL); | |
1513 | |
1514 // 4894874: check special cases for double and long local variables | |
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1515 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1516 sig == vmSymbols::type_signature(T_LONG)) { |
0 | 1517 extra_slot = 1; |
1518 } | |
1519 } | |
1520 guarantee_property((index + extra_slot) < max_locals, | |
1521 "Invalid index %u in %s in class file %s", | |
1522 index, tbl_name, CHECK_NULL); | |
1523 } | |
1524 } | |
1525 return localvariable_table_start; | |
1526 } | |
1527 | |
1528 | |
1529 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
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1530 u1* u1_array, u2* u2_array, TRAPS) { |
0 | 1531 ClassFileStream* cfs = stream(); |
1532 u2 index = 0; // index in the array with long/double occupying two slots | |
1533 u4 i1 = *u1_index; | |
1534 u4 i2 = *u2_index + 1; | |
1535 for(int i = 0; i < array_length; i++) { | |
1536 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
1537 index++; | |
1538 if (tag == ITEM_Long || tag == ITEM_Double) { | |
1539 index++; | |
1540 } else if (tag == ITEM_Object) { | |
1541 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
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1542 guarantee_property(valid_klass_reference_at(class_index), |
0 | 1543 "Bad class index %u in StackMap in class file %s", |
1544 class_index, CHECK); | |
1545 } else if (tag == ITEM_Uninitialized) { | |
1546 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
1547 guarantee_property( | |
1548 offset < code_length, | |
1549 "Bad uninitialized type offset %u in StackMap in class file %s", | |
1550 offset, CHECK); | |
1551 } else { | |
1552 guarantee_property( | |
1553 tag <= (u1)ITEM_Uninitialized, | |
1554 "Unknown variable type %u in StackMap in class file %s", | |
1555 tag, CHECK); | |
1556 } | |
1557 } | |
1558 u2_array[*u2_index] = index; | |
1559 *u1_index = i1; | |
1560 *u2_index = i2; | |
1561 } | |
1562 | |
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1563 u1* ClassFileParser::parse_stackmap_table( |
0 | 1564 u4 code_attribute_length, TRAPS) { |
1565 if (code_attribute_length == 0) | |
1566 return NULL; | |
1567 | |
1568 ClassFileStream* cfs = stream(); | |
1569 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
1570 assert(stackmap_table_start != NULL, "null stackmap table"); | |
1571 | |
1572 // check code_attribute_length first | |
1573 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
1574 | |
1575 if (!_need_verify && !DumpSharedSpaces) { | |
1576 return NULL; | |
1577 } | |
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1578 return stackmap_table_start; |
0 | 1579 } |
1580 | |
1581 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
1582 u4 method_attribute_length, | |
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1583 TRAPS) { |
0 | 1584 ClassFileStream* cfs = stream(); |
1585 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
1586 *checked_exceptions_length = cfs->get_u2_fast(); | |
1587 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1588 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
1589 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
1590 if (!_need_verify) { | |
1591 cfs->skip_u2_fast(size); | |
1592 } else { | |
1593 // Verify each value in the checked exception table | |
1594 u2 checked_exception; | |
1595 u2 len = *checked_exceptions_length; | |
1596 cfs->guarantee_more(2 * len, CHECK_NULL); | |
1597 for (int i = 0; i < len; i++) { | |
1598 checked_exception = cfs->get_u2_fast(); | |
1599 check_property( | |
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1600 valid_klass_reference_at(checked_exception), |
0 | 1601 "Exception name has bad type at constant pool %u in class file %s", |
1602 checked_exception, CHECK_NULL); | |
1603 } | |
1604 } | |
1605 // check exceptions attribute length | |
1606 if (_need_verify) { | |
1607 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
1608 sizeof(u2) * size), | |
1609 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
1610 } | |
1611 return checked_exceptions_start; | |
1612 } | |
1613 | |
1586
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1614 void ClassFileParser::throwIllegalSignature( |
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1615 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
1586
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1616 ResourceMark rm(THREAD); |
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1617 Exceptions::fthrow(THREAD_AND_LOCATION, |
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1618 vmSymbols::java_lang_ClassFormatError(), |
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1619 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
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1620 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
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1621 } |
0 | 1622 |
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1623 // Skip an annotation. Return >=limit if there is any problem. |
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1624 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
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1625 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
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1626 // value := switch (tag:u1) { ... } |
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1627 index += 2; // skip atype |
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1628 if ((index += 2) >= limit) return limit; // read nmem |
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1629 int nmem = Bytes::get_Java_u2(buffer+index-2); |
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1630 while (--nmem >= 0 && index < limit) { |
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1631 index += 2; // skip member |
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1632 index = skip_annotation_value(buffer, limit, index); |
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1633 } |
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1634 return index; |
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1635 } |
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1636 |
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1637 // Skip an annotation value. Return >=limit if there is any problem. |
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1638 int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
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1639 // value := switch (tag:u1) { |
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1640 // case B, C, I, S, Z, D, F, J, c: con:u2; |
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1641 // case e: e_class:u2 e_name:u2; |
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1642 // case s: s_con:u2; |
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1643 // case [: do(nval:u2) {value}; |
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1644 // case @: annotation; |
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1645 // case s: s_con:u2; |
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1646 // } |
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1647 if ((index += 1) >= limit) return limit; // read tag |
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1648 u1 tag = buffer[index-1]; |
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1649 switch (tag) { |
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1650 case 'B': case 'C': case 'I': case 'S': case 'Z': |
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1651 case 'D': case 'F': case 'J': case 'c': case 's': |
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1652 index += 2; // skip con or s_con |
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1653 break; |
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1654 case 'e': |
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1655 index += 4; // skip e_class, e_name |
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1656 break; |
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1657 case '[': |
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1658 { |
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1659 if ((index += 2) >= limit) return limit; // read nval |
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1660 int nval = Bytes::get_Java_u2(buffer+index-2); |
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1661 while (--nval >= 0 && index < limit) { |
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1662 index = skip_annotation_value(buffer, limit, index); |
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1663 } |
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1664 } |
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1665 break; |
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1666 case '@': |
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1667 index = skip_annotation(buffer, limit, index); |
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1668 break; |
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|
1669 default: |
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1670 assert(false, "annotation tag"); |
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1671 return limit; // bad tag byte |
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|
1672 } |
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1673 return index; |
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|
1674 } |
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1675 |
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1676 // Sift through annotations, looking for those significant to the VM: |
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1677 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
6222
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1678 ClassFileParser::AnnotationCollector* coll, |
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1679 TRAPS) { |
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1680 // annotations := do(nann:u2) {annotation} |
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1681 int index = 0; |
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1682 if ((index += 2) >= limit) return; // read nann |
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1683 int nann = Bytes::get_Java_u2(buffer+index-2); |
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1684 enum { // initial annotation layout |
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1685 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
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1686 count_off = 2, // u2 such as 1 (one value) |
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1687 member_off = 4, // utf8 such as 'value' |
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1688 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
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1689 e_tag_val = 'e', |
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1690 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
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1691 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
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1692 e_size = 11, // end of 'e' annotation |
7587 | 1693 c_tag_val = 'c', // payload is type |
1694 c_con_off = 7, // utf8 payload, such as 'I' | |
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1695 c_size = 9, // end of 'c' annotation |
7587 | 1696 s_tag_val = 's', // payload is String |
1697 s_con_off = 7, // utf8 payload, such as 'Ljava/lang/String;' | |
1698 s_size = 9, | |
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1699 min_size = 6 // smallest possible size (zero members) |
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1700 }; |
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1701 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
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1702 int index0 = index; |
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1703 index = skip_annotation(buffer, limit, index); |
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1704 u1* abase = buffer + index0; |
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1705 int atype = Bytes::get_Java_u2(abase + atype_off); |
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1706 int count = Bytes::get_Java_u2(abase + count_off); |
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1707 Symbol* aname = check_symbol_at(_cp, atype); |
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1708 if (aname == NULL) break; // invalid annotation name |
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1709 Symbol* member = NULL; |
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1710 if (count >= 1) { |
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1711 int member_index = Bytes::get_Java_u2(abase + member_off); |
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1712 member = check_symbol_at(_cp, member_index); |
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1713 if (member == NULL) break; // invalid member name |
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1714 } |
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1715 |
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1716 // Here is where parsing particular annotations will take place. |
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1717 AnnotationCollector::ID id = coll->annotation_index(_loader_data, aname); |
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1718 if (id == AnnotationCollector::_unknown) continue; |
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1719 coll->set_annotation(id); |
7587 | 1720 |
1721 if (id == AnnotationCollector::_sun_misc_Contended) { | |
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1722 // @Contended can optionally specify the contention group. |
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1723 // |
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1724 // Contended group defines the equivalence class over the fields: |
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1725 // the fields within the same contended group are not treated distinct. |
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1726 // The only exception is default group, which does not incur the |
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1727 // equivalence. Naturally, contention group for classes is meaningless. |
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1728 // |
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1729 // While the contention group is specified as String, annotation |
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1730 // values are already interned, and we might as well use the constant |
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1731 // pool index as the group tag. |
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1732 // |
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1733 u2 group_index = 0; // default contended group |
7587 | 1734 if (count == 1 |
1735 && s_size == (index - index0) // match size | |
1736 && s_tag_val == *(abase + tag_off) | |
1737 && member == vmSymbols::value_name()) { | |
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1738 group_index = Bytes::get_Java_u2(abase + s_con_off); |
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1739 if (_cp->symbol_at(group_index)->utf8_length() == 0) { |
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1740 group_index = 0; // default contended group |
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1741 } |
7587 | 1742 } |
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1743 coll->set_contended_group(group_index); |
7587 | 1744 } |
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1745 } |
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1746 } |
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1747 |
7587 | 1748 ClassFileParser::AnnotationCollector::ID |
1749 ClassFileParser::AnnotationCollector::annotation_index(ClassLoaderData* loader_data, | |
1750 Symbol* name) { | |
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1751 vmSymbols::SID sid = vmSymbols::find_sid(name); |
7639
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1752 // Privileged code can use all annotations. Other code silently drops some. |
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1753 const bool privileged = loader_data->is_the_null_class_loader_data() || |
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1754 loader_data->is_ext_class_loader_data() || |
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1755 loader_data->is_anonymous(); |
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1756 switch (sid) { |
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1757 case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_reflect_CallerSensitive_signature): |
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1758 if (_location != _in_method) break; // only allow for methods |
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1759 if (!privileged) break; // only allow in privileged code |
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1760 return _method_CallerSensitive; |
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1761 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
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1762 if (_location != _in_method) break; // only allow for methods |
7587 | 1763 if (!privileged) break; // only allow in privileged code |
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1764 return _method_ForceInline; |
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1765 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
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1766 if (_location != _in_method) break; // only allow for methods |
7587 | 1767 if (!privileged) break; // only allow in privileged code |
6266
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1768 return _method_DontInline; |
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1769 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
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1770 if (_location != _in_method) break; // only allow for methods |
7587 | 1771 if (!privileged) break; // only allow in privileged code |
6266
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1772 return _method_LambdaForm_Compiled; |
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1773 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
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1774 if (_location != _in_method) break; // only allow for methods |
7587 | 1775 if (!privileged) break; // only allow in privileged code |
6266
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1776 return _method_LambdaForm_Hidden; |
7587 | 1777 case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_misc_Contended_signature): |
1778 if (_location != _in_field && _location != _in_class) break; // only allow for fields and classes | |
1779 if (!EnableContended || (RestrictContended && !privileged)) break; // honor privileges | |
1780 return _sun_misc_Contended; | |
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1781 default: break; |
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1782 } |
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1783 return AnnotationCollector::_unknown; |
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1784 } |
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1785 |
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1786 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
7587 | 1787 if (is_contended()) |
1788 f->set_contended_group(contended_group()); | |
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1789 } |
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1790 |
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1791 ClassFileParser::FieldAnnotationCollector::~FieldAnnotationCollector() { |
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1792 // If there's an error deallocate metadata for field annotations |
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1793 MetadataFactory::free_array<u1>(_loader_data, _field_annotations); |
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1794 MetadataFactory::free_array<u1>(_loader_data, _field_type_annotations); |
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1795 } |
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1796 |
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1797 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
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1798 if (has_annotation(_method_CallerSensitive)) |
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1799 m->set_caller_sensitive(true); |
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1800 if (has_annotation(_method_ForceInline)) |
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1801 m->set_force_inline(true); |
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1802 if (has_annotation(_method_DontInline)) |
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1803 m->set_dont_inline(true); |
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1804 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
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1805 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
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1806 if (has_annotation(_method_LambdaForm_Hidden)) |
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1807 m->set_hidden(true); |
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1808 } |
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1809 |
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1810 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
7587 | 1811 k->set_is_contended(is_contended()); |
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1812 } |
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1813 |
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1814 |
0 | 1815 #define MAX_ARGS_SIZE 255 |
1816 #define MAX_CODE_SIZE 65535 | |
1817 #define INITIAL_MAX_LVT_NUMBER 256 | |
1818 | |
8031 | 1819 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
1820 * | |
1821 * Rules for LVT's and LVTT's are: | |
1822 * - There can be any number of LVT's and LVTT's. | |
1823 * - If there are n LVT's, it is the same as if there was just | |
1824 * one LVT containing all the entries from the n LVT's. | |
1825 * - There may be no more than one LVT entry per local variable. | |
1826 * Two LVT entries are 'equal' if these fields are the same: | |
1827 * start_pc, length, name, slot | |
1828 * - There may be no more than one LVTT entry per each LVT entry. | |
1829 * Each LVTT entry has to match some LVT entry. | |
1830 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
1831 */ | |
1832 void ClassFileParser::copy_localvariable_table(ConstMethod* cm, | |
1833 int lvt_cnt, | |
1834 u2* localvariable_table_length, | |
1835 u2** localvariable_table_start, | |
1836 int lvtt_cnt, | |
1837 u2* localvariable_type_table_length, | |
1838 u2** localvariable_type_table_start, | |
1839 TRAPS) { | |
1840 | |
1841 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
1842 initialize_hashtable(lvt_Hash); | |
1843 | |
1844 // To fill LocalVariableTable in | |
1845 Classfile_LVT_Element* cf_lvt; | |
1846 LocalVariableTableElement* lvt = cm->localvariable_table_start(); | |
1847 | |
1848 for (int tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
1849 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
1850 for (int idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
1851 copy_lvt_element(&cf_lvt[idx], lvt); | |
1852 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
1853 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
1854 && _need_verify | |
1855 && _major_version >= JAVA_1_5_VERSION) { | |
1856 clear_hashtable(lvt_Hash); | |
1857 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
1858 "entry for '%s' in class file %s", | |
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1859 _cp->symbol_at(lvt->name_cp_index)->as_utf8(), |
8031 | 1860 CHECK); |
1861 } | |
1862 } | |
1863 } | |
1864 | |
1865 // To merge LocalVariableTable and LocalVariableTypeTable | |
1866 Classfile_LVT_Element* cf_lvtt; | |
1867 LocalVariableTableElement lvtt_elem; | |
1868 | |
1869 for (int tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
1870 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
1871 for (int idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
1872 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
1873 int index = hash(&lvtt_elem); | |
1874 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
1875 if (entry == NULL) { | |
1876 if (_need_verify) { | |
1877 clear_hashtable(lvt_Hash); | |
1878 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
1879 "does not match any LVT entry", | |
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1880 _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
8031 | 1881 CHECK); |
1882 } | |
1883 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
1884 clear_hashtable(lvt_Hash); | |
1885 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
1886 "entry for '%s' in class file %s", | |
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1887 _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
8031 | 1888 CHECK); |
1889 } else { | |
1890 // to add generic signatures into LocalVariableTable | |
1891 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
1892 } | |
1893 } | |
1894 } | |
1895 clear_hashtable(lvt_Hash); | |
1896 } | |
1897 | |
1898 | |
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1899 void ClassFileParser::copy_method_annotations(ConstMethod* cm, |
8031 | 1900 u1* runtime_visible_annotations, |
1901 int runtime_visible_annotations_length, | |
1902 u1* runtime_invisible_annotations, | |
1903 int runtime_invisible_annotations_length, | |
1904 u1* runtime_visible_parameter_annotations, | |
1905 int runtime_visible_parameter_annotations_length, | |
1906 u1* runtime_invisible_parameter_annotations, | |
1907 int runtime_invisible_parameter_annotations_length, | |
1908 u1* runtime_visible_type_annotations, | |
1909 int runtime_visible_type_annotations_length, | |
1910 u1* runtime_invisible_type_annotations, | |
1911 int runtime_invisible_type_annotations_length, | |
1912 u1* annotation_default, | |
1913 int annotation_default_length, | |
1914 TRAPS) { | |
1915 | |
1916 AnnotationArray* a; | |
1917 | |
1918 if (runtime_visible_annotations_length + | |
1919 runtime_invisible_annotations_length > 0) { | |
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1920 a = assemble_annotations(runtime_visible_annotations, |
8031 | 1921 runtime_visible_annotations_length, |
1922 runtime_invisible_annotations, | |
1923 runtime_invisible_annotations_length, | |
1924 CHECK); | |
1925 cm->set_method_annotations(a); | |
1926 } | |
1927 | |
1928 if (runtime_visible_parameter_annotations_length + | |
1929 runtime_invisible_parameter_annotations_length > 0) { | |
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1930 a = assemble_annotations(runtime_visible_parameter_annotations, |
8031 | 1931 runtime_visible_parameter_annotations_length, |
1932 runtime_invisible_parameter_annotations, | |
1933 runtime_invisible_parameter_annotations_length, | |
1934 CHECK); | |
1935 cm->set_parameter_annotations(a); | |
1936 } | |
1937 | |
1938 if (annotation_default_length > 0) { | |
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1939 a = assemble_annotations(annotation_default, |
8031 | 1940 annotation_default_length, |
1941 NULL, | |
1942 0, | |
1943 CHECK); | |
1944 cm->set_default_annotations(a); | |
1945 } | |
1946 | |
1947 if (runtime_visible_type_annotations_length + | |
1948 runtime_invisible_type_annotations_length > 0) { | |
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1949 a = assemble_annotations(runtime_visible_type_annotations, |
8031 | 1950 runtime_visible_type_annotations_length, |
1951 runtime_invisible_type_annotations, | |
1952 runtime_invisible_type_annotations_length, | |
1953 CHECK); | |
1954 cm->set_type_annotations(a); | |
1955 } | |
1956 } | |
1957 | |
1958 | |
0 | 1959 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions |
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1960 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
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1961 // Method* to save footprint, so we only know the size of the resulting Method* when the |
0 | 1962 // entire method attribute is parsed. |
1963 // | |
1964 // The promoted_flags parameter is used to pass relevant access_flags | |
1965 // from the method back up to the containing klass. These flag values | |
1966 // are added to klass's access_flags. | |
1967 | |
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1968 methodHandle ClassFileParser::parse_method(bool is_interface, |
0 | 1969 AccessFlags *promoted_flags, |
1970 TRAPS) { | |
1971 ClassFileStream* cfs = stream(); | |
1972 methodHandle nullHandle; | |
1973 ResourceMark rm(THREAD); | |
1974 // Parse fixed parts | |
1975 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1976 | |
1977 int flags = cfs->get_u2_fast(); | |
1978 u2 name_index = cfs->get_u2_fast(); | |
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1979 int cp_size = _cp->length(); |
0 | 1980 check_property( |
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1981 valid_symbol_at(name_index), |
0 | 1982 "Illegal constant pool index %u for method name in class file %s", |
1983 name_index, CHECK_(nullHandle)); | |
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1984 Symbol* name = _cp->symbol_at(name_index); |
0 | 1985 verify_legal_method_name(name, CHECK_(nullHandle)); |
1986 | |
1987 u2 signature_index = cfs->get_u2_fast(); | |
1988 guarantee_property( | |
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1989 valid_symbol_at(signature_index), |
0 | 1990 "Illegal constant pool index %u for method signature in class file %s", |
1991 signature_index, CHECK_(nullHandle)); | |
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1992 Symbol* signature = _cp->symbol_at(signature_index); |
0 | 1993 |
1994 AccessFlags access_flags; | |
1995 if (name == vmSymbols::class_initializer_name()) { | |
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1996 // We ignore the other access flags for a valid class initializer. |
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1997 // (JVM Spec 2nd ed., chapter 4.6) |
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1998 if (_major_version < 51) { // backward compatibility |
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1999 flags = JVM_ACC_STATIC; |
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2000 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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2001 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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2002 } |
0 | 2003 } else { |
2004 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
2005 } | |
2006 | |
2007 int args_size = -1; // only used when _need_verify is true | |
2008 if (_need_verify) { | |
2009 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
2010 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
2011 if (args_size > MAX_ARGS_SIZE) { | |
2012 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
2013 } | |
2014 } | |
2015 | |
2016 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
2017 | |
2018 // Default values for code and exceptions attribute elements | |
2019 u2 max_stack = 0; | |
2020 u2 max_locals = 0; | |
2021 u4 code_length = 0; | |
2022 u1* code_start = 0; | |
2023 u2 exception_table_length = 0; | |
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2024 u2* exception_table_start = NULL; |
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2025 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
0 | 2026 u2 checked_exceptions_length = 0; |
2027 u2* checked_exceptions_start = NULL; | |
2028 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
2029 int linenumber_table_length = 0; | |
2030 int total_lvt_length = 0; | |
2031 u2 lvt_cnt = 0; | |
2032 u2 lvtt_cnt = 0; | |
2033 bool lvt_allocated = false; | |
2034 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
2035 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
2036 u2* localvariable_table_length; | |
2037 u2** localvariable_table_start; | |
2038 u2* localvariable_type_table_length; | |
2039 u2** localvariable_type_table_start; | |
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2040 u2 method_parameters_length = 0; |
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2041 u1* method_parameters_data = NULL; |
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2042 bool method_parameters_seen = false; |
0 | 2043 bool parsed_code_attribute = false; |
2044 bool parsed_checked_exceptions_attribute = false; | |
2045 bool parsed_stackmap_attribute = false; | |
2046 // stackmap attribute - JDK1.5 | |
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2047 u1* stackmap_data = NULL; |
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2048 int stackmap_data_length = 0; |
0 | 2049 u2 generic_signature_index = 0; |
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2050 MethodAnnotationCollector parsed_annotations; |
0 | 2051 u1* runtime_visible_annotations = NULL; |
2052 int runtime_visible_annotations_length = 0; | |
2053 u1* runtime_invisible_annotations = NULL; | |
2054 int runtime_invisible_annotations_length = 0; | |
2055 u1* runtime_visible_parameter_annotations = NULL; | |
2056 int runtime_visible_parameter_annotations_length = 0; | |
2057 u1* runtime_invisible_parameter_annotations = NULL; | |
2058 int runtime_invisible_parameter_annotations_length = 0; | |
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2059 u1* runtime_visible_type_annotations = NULL; |
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2060 int runtime_visible_type_annotations_length = 0; |
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2061 u1* runtime_invisible_type_annotations = NULL; |
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2062 int runtime_invisible_type_annotations_length = 0; |
0 | 2063 u1* annotation_default = NULL; |
2064 int annotation_default_length = 0; | |
2065 | |
2066 // Parse code and exceptions attribute | |
2067 u2 method_attributes_count = cfs->get_u2_fast(); | |
2068 while (method_attributes_count--) { | |
2069 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
2070 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
2071 u4 method_attribute_length = cfs->get_u4_fast(); | |
2072 check_property( | |
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2073 valid_symbol_at(method_attribute_name_index), |
0 | 2074 "Invalid method attribute name index %u in class file %s", |
2075 method_attribute_name_index, CHECK_(nullHandle)); | |
2076 | |
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2077 Symbol* method_attribute_name = _cp->symbol_at(method_attribute_name_index); |
0 | 2078 if (method_attribute_name == vmSymbols::tag_code()) { |
2079 // Parse Code attribute | |
2080 if (_need_verify) { | |
6934 | 2081 guarantee_property( |
2082 !access_flags.is_native() && !access_flags.is_abstract(), | |
0 | 2083 "Code attribute in native or abstract methods in class file %s", |
2084 CHECK_(nullHandle)); | |
2085 } | |
2086 if (parsed_code_attribute) { | |
2087 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
2088 } | |
2089 parsed_code_attribute = true; | |
2090 | |
2091 // Stack size, locals size, and code size | |
2092 if (_major_version == 45 && _minor_version <= 2) { | |
2093 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
2094 max_stack = cfs->get_u1_fast(); | |
2095 max_locals = cfs->get_u1_fast(); | |
2096 code_length = cfs->get_u2_fast(); | |
2097 } else { | |
2098 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
2099 max_stack = cfs->get_u2_fast(); | |
2100 max_locals = cfs->get_u2_fast(); | |
2101 code_length = cfs->get_u4_fast(); | |
2102 } | |
2103 if (_need_verify) { | |
2104 guarantee_property(args_size <= max_locals, | |
2105 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
2106 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
2107 "Invalid method Code length %u in class file %s", | |
2108 code_length, CHECK_(nullHandle)); | |
2109 } | |
2110 // Code pointer | |
2111 code_start = cfs->get_u1_buffer(); | |
2112 assert(code_start != NULL, "null code start"); | |
2113 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
2114 cfs->skip_u1_fast(code_length); | |
2115 | |
2116 // Exception handler table | |
2117 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
2118 exception_table_length = cfs->get_u2_fast(); | |
2119 if (exception_table_length > 0) { | |
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2120 exception_table_start = |
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2121 parse_exception_table(code_length, exception_table_length, CHECK_(nullHandle)); |
0 | 2122 } |
2123 | |
2124 // Parse additional attributes in code attribute | |
2125 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
2126 u2 code_attributes_count = cfs->get_u2_fast(); | |
92
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2127 |
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2128 unsigned int calculated_attribute_length = 0; |
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2129 |
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2130 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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2131 calculated_attribute_length = |
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2132 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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2133 } else { |
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2134 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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2135 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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2136 } |
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2137 calculated_attribute_length += |
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2138 code_length + |
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2139 sizeof(exception_table_length) + |
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2140 sizeof(code_attributes_count) + |
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2141 exception_table_length * |
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2142 ( sizeof(u2) + // start_pc |
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2143 sizeof(u2) + // end_pc |
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2144 sizeof(u2) + // handler_pc |
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2145 sizeof(u2) ); // catch_type_index |
0 | 2146 |
2147 while (code_attributes_count--) { | |
2148 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
2149 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
2150 u4 code_attribute_length = cfs->get_u4_fast(); | |
2151 calculated_attribute_length += code_attribute_length + | |
2152 sizeof(code_attribute_name_index) + | |
2153 sizeof(code_attribute_length); | |
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2154 check_property(valid_symbol_at(code_attribute_name_index), |
0 | 2155 "Invalid code attribute name index %u in class file %s", |
2156 code_attribute_name_index, | |
2157 CHECK_(nullHandle)); | |
2158 if (LoadLineNumberTables && | |
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2159 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { |
0 | 2160 // Parse and compress line number table |
2161 parse_linenumber_table(code_attribute_length, code_length, | |
2162 &linenumber_table, CHECK_(nullHandle)); | |
2163 | |
2164 } else if (LoadLocalVariableTables && | |
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2165 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { |
0 | 2166 // Parse local variable table |
2167 if (!lvt_allocated) { | |
2168 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2169 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2170 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2171 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2172 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2173 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2174 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2175 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2176 lvt_allocated = true; | |
2177 } | |
2178 if (lvt_cnt == max_lvt_cnt) { | |
2179 max_lvt_cnt <<= 1; | |
2180 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
2181 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
2182 } | |
2183 localvariable_table_start[lvt_cnt] = | |
2184 parse_localvariable_table(code_length, | |
2185 max_locals, | |
2186 code_attribute_length, | |
2187 &localvariable_table_length[lvt_cnt], | |
2188 false, // is not LVTT | |
2189 CHECK_(nullHandle)); | |
2190 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
2191 lvt_cnt++; | |
2192 } else if (LoadLocalVariableTypeTables && | |
2193 _major_version >= JAVA_1_5_VERSION && | |
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2194 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { |
0 | 2195 if (!lvt_allocated) { |
2196 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2197 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2198 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2199 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2200 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2201 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2202 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2203 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2204 lvt_allocated = true; | |
2205 } | |
2206 // Parse local variable type table | |
2207 if (lvtt_cnt == max_lvtt_cnt) { | |
2208 max_lvtt_cnt <<= 1; | |
2209 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
2210 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
2211 } | |
2212 localvariable_type_table_start[lvtt_cnt] = | |
2213 parse_localvariable_table(code_length, | |
2214 max_locals, | |
2215 code_attribute_length, | |
2216 &localvariable_type_table_length[lvtt_cnt], | |
2217 true, // is LVTT | |
2218 CHECK_(nullHandle)); | |
2219 lvtt_cnt++; | |
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2220 } else if (_major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && |
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2221 _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { |
0 | 2222 // Stack map is only needed by the new verifier in JDK1.5. |
2223 if (parsed_stackmap_attribute) { | |
2224 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
2225 } | |
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2226 stackmap_data = parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); |
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2227 stackmap_data_length = code_attribute_length; |
0 | 2228 parsed_stackmap_attribute = true; |
2229 } else { | |
2230 // Skip unknown attributes | |
2231 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
2232 } | |
2233 } | |
2234 // check method attribute length | |
2235 if (_need_verify) { | |
2236 guarantee_property(method_attribute_length == calculated_attribute_length, | |
2237 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
2238 } | |
2239 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
2240 // Parse Exceptions attribute | |
2241 if (parsed_checked_exceptions_attribute) { | |
2242 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
2243 } | |
2244 parsed_checked_exceptions_attribute = true; | |
2245 checked_exceptions_start = | |
2246 parse_checked_exceptions(&checked_exceptions_length, | |
2247 method_attribute_length, | |
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2248 CHECK_(nullHandle)); |
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2249 } else if (method_attribute_name == vmSymbols::tag_method_parameters()) { |
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|
2250 // reject multiple method parameters |
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|
2251 if (method_parameters_seen) { |
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2252 classfile_parse_error("Multiple MethodParameters attributes in class file %s", CHECK_(nullHandle)); |
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|
2253 } |
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2254 method_parameters_seen = true; |
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2255 method_parameters_length = cfs->get_u1_fast(); |
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2256 if (method_attribute_length != (method_parameters_length * 4u) + 1u) { |
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2257 classfile_parse_error( |
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|
2258 "Invalid MethodParameters method attribute length %u in class file", |
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2259 method_attribute_length, CHECK_(nullHandle)); |
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|
2260 } |
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2261 method_parameters_data = cfs->get_u1_buffer(); |
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2262 cfs->skip_u2_fast(method_parameters_length); |
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2263 cfs->skip_u2_fast(method_parameters_length); |
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2264 // ignore this attribute if it cannot be reflected |
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|
2265 if (!SystemDictionary::Parameter_klass_loaded()) |
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2266 method_parameters_length = 0; |
0 | 2267 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { |
2268 if (method_attribute_length != 0) { | |
2269 classfile_parse_error( | |
2270 "Invalid Synthetic method attribute length %u in class file %s", | |
2271 method_attribute_length, CHECK_(nullHandle)); | |
2272 } | |
2273 // Should we check that there hasn't already been a synthetic attribute? | |
2274 access_flags.set_is_synthetic(); | |
2275 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
2276 if (method_attribute_length != 0) { | |
2277 classfile_parse_error( | |
2278 "Invalid Deprecated method attribute length %u in class file %s", | |
2279 method_attribute_length, CHECK_(nullHandle)); | |
2280 } | |
2281 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2282 if (method_attribute_name == vmSymbols::tag_signature()) { | |
2283 if (method_attribute_length != 2) { | |
2284 classfile_parse_error( | |
2285 "Invalid Signature attribute length %u in class file %s", | |
2286 method_attribute_length, CHECK_(nullHandle)); | |
2287 } | |
2288 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
2289 generic_signature_index = cfs->get_u2_fast(); | |
2290 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
2291 runtime_visible_annotations_length = method_attribute_length; | |
2292 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2293 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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2294 parse_annotations(runtime_visible_annotations, |
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2295 runtime_visible_annotations_length, &parsed_annotations, |
6934 | 2296 CHECK_(nullHandle)); |
0 | 2297 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
2298 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
2299 runtime_invisible_annotations_length = method_attribute_length; | |
2300 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2301 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2302 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
2303 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
2304 runtime_visible_parameter_annotations_length = method_attribute_length; | |
2305 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
2306 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
2307 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
2308 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
2309 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
2310 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
2311 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
2312 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
2313 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
2314 annotation_default_length = method_attribute_length; | |
2315 annotation_default = cfs->get_u1_buffer(); | |
2316 assert(annotation_default != NULL, "null annotation default"); | |
2317 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
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|
2318 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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|
2319 runtime_visible_type_annotations_length = method_attribute_length; |
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2320 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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|
2321 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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|
2322 // No need for the VM to parse Type annotations |
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2323 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
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|
2324 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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|
2325 runtime_invisible_type_annotations_length = method_attribute_length; |
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2326 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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2327 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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|
2328 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK_(nullHandle)); |
0 | 2329 } else { |
2330 // Skip unknown attributes | |
2331 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2332 } | |
2333 } else { | |
2334 // Skip unknown attributes | |
2335 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2336 } | |
2337 } | |
2338 | |
2339 if (linenumber_table != NULL) { | |
2340 linenumber_table->write_terminator(); | |
2341 linenumber_table_length = linenumber_table->position(); | |
2342 } | |
2343 | |
2344 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
2345 if (_need_verify) { | |
2346 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
2347 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
2348 } | |
2349 | |
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2350 // All sizing information for a Method* is finally available, now create it |
8031 | 2351 InlineTableSizes sizes( |
2352 total_lvt_length, | |
2353 linenumber_table_length, | |
2354 exception_table_length, | |
2355 checked_exceptions_length, | |
2356 method_parameters_length, | |
2357 generic_signature_index, | |
2358 runtime_visible_annotations_length + | |
2359 runtime_invisible_annotations_length, | |
2360 runtime_visible_parameter_annotations_length + | |
2361 runtime_invisible_parameter_annotations_length, | |
2362 runtime_visible_type_annotations_length + | |
2363 runtime_invisible_type_annotations_length, | |
2364 annotation_default_length, | |
2365 0); | |
2366 | |
6934 | 2367 Method* m = Method::allocate( |
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2368 _loader_data, code_length, access_flags, &sizes, |
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|
2369 ConstMethod::NORMAL, CHECK_(nullHandle)); |
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|
2370 |
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2371 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
0 | 2372 |
2373 // Fill in information from fixed part (access_flags already set) | |
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2374 m->set_constants(_cp); |
0 | 2375 m->set_name_index(name_index); |
2376 m->set_signature_index(signature_index); | |
2377 #ifdef CC_INTERP | |
2378 // hmm is there a gc issue here?? | |
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2379 ResultTypeFinder rtf(_cp->symbol_at(signature_index)); |
0 | 2380 m->set_result_index(rtf.type()); |
2381 #endif | |
2382 | |
2383 if (args_size >= 0) { | |
2384 m->set_size_of_parameters(args_size); | |
2385 } else { | |
2386 m->compute_size_of_parameters(THREAD); | |
2387 } | |
2388 #ifdef ASSERT | |
2389 if (args_size >= 0) { | |
2390 m->compute_size_of_parameters(THREAD); | |
2391 assert(args_size == m->size_of_parameters(), ""); | |
2392 } | |
2393 #endif | |
2394 | |
2395 // Fill in code attribute information | |
2396 m->set_max_stack(max_stack); | |
2397 m->set_max_locals(max_locals); | |
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2398 if (stackmap_data != NULL) { |
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2399 m->constMethod()->copy_stackmap_data(_loader_data, stackmap_data, |
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2400 stackmap_data_length, CHECK_NULL); |
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2401 } |
0 | 2402 |
2403 // Copy byte codes | |
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2404 m->set_code(code_start); |
0 | 2405 |
2406 // Copy line number table | |
2407 if (linenumber_table != NULL) { | |
2408 memcpy(m->compressed_linenumber_table(), | |
2409 linenumber_table->buffer(), linenumber_table_length); | |
2410 } | |
2411 | |
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|
2412 // Copy exception table |
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|
2413 if (exception_table_length > 0) { |
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|
2414 int size = |
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|
2415 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
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|
2416 copy_u2_with_conversion((u2*) m->exception_table_start(), |
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|
2417 exception_table_start, size); |
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|
2418 } |
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|
2419 |
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|
2420 // Copy method parameters |
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|
2421 if (method_parameters_length > 0) { |
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|
2422 MethodParametersElement* elem = m->constMethod()->method_parameters_start(); |
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2423 for (int i = 0; i < method_parameters_length; i++) { |
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|
2424 elem[i].name_cp_index = Bytes::get_Java_u2(method_parameters_data); |
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2425 method_parameters_data += 2; |
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|
2426 elem[i].flags = Bytes::get_Java_u2(method_parameters_data); |
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|
2427 method_parameters_data += 2; |
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|
2428 } |
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|
2429 } |
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|
2430 |
0 | 2431 // Copy checked exceptions |
2432 if (checked_exceptions_length > 0) { | |
2433 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
2434 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
2435 } | |
2436 | |
8031 | 2437 // Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
0 | 2438 if (total_lvt_length > 0) { |
2439 promoted_flags->set_has_localvariable_table(); | |
8031 | 2440 copy_localvariable_table(m->constMethod(), lvt_cnt, |
2441 localvariable_table_length, | |
2442 localvariable_table_start, | |
2443 lvtt_cnt, | |
2444 localvariable_type_table_length, | |
2445 localvariable_type_table_start, CHECK_NULL); | |
0 | 2446 } |
2447 | |
6222
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|
2448 if (parsed_annotations.has_any_annotations()) |
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|
2449 parsed_annotations.apply_to(m); |
8031 | 2450 |
2451 // Copy annotations | |
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|
2452 copy_method_annotations(m->constMethod(), |
8031 | 2453 runtime_visible_annotations, |
2454 runtime_visible_annotations_length, | |
2455 runtime_invisible_annotations, | |
2456 runtime_invisible_annotations_length, | |
2457 runtime_visible_parameter_annotations, | |
2458 runtime_visible_parameter_annotations_length, | |
2459 runtime_invisible_parameter_annotations, | |
2460 runtime_invisible_parameter_annotations_length, | |
2461 runtime_visible_type_annotations, | |
2462 runtime_visible_type_annotations_length, | |
2463 runtime_invisible_type_annotations, | |
2464 runtime_invisible_type_annotations_length, | |
2465 annotation_default, | |
2466 annotation_default_length, | |
2467 CHECK_NULL); | |
0 | 2468 |
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2085
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|
2469 if (name == vmSymbols::finalize_method_name() && |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2470 signature == vmSymbols::void_method_signature()) { |
0 | 2471 if (m->is_empty_method()) { |
2472 _has_empty_finalizer = true; | |
2473 } else { | |
2474 _has_finalizer = true; | |
2475 } | |
2476 } | |
2177
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|
2477 if (name == vmSymbols::object_initializer_name() && |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2478 signature == vmSymbols::void_method_signature() && |
0 | 2479 m->is_vanilla_constructor()) { |
2480 _has_vanilla_constructor = true; | |
2481 } | |
2482 | |
8031 | 2483 NOT_PRODUCT(m->verify()); |
0 | 2484 return m; |
2485 } | |
2486 | |
2487 | |
2488 // The promoted_flags parameter is used to pass relevant access_flags | |
2489 // from the methods back up to the containing klass. These flag values | |
2490 // are added to klass's access_flags. | |
2491 | |
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2492 Array<Method*>* ClassFileParser::parse_methods(bool is_interface, |
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|
2493 AccessFlags* promoted_flags, |
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|
2494 bool* has_final_method, |
6934 | 2495 bool* has_default_methods, |
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2496 TRAPS) { |
0 | 2497 ClassFileStream* cfs = stream(); |
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2498 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 2499 u2 length = cfs->get_u2_fast(); |
2500 if (length == 0) { | |
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2501 _methods = Universe::the_empty_method_array(); |
0 | 2502 } else { |
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2503 _methods = MetadataFactory::new_array<Method*>(_loader_data, length, NULL, CHECK_NULL); |
6725
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2504 |
0 | 2505 HandleMark hm(THREAD); |
2506 for (int index = 0; index < length; index++) { | |
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|
2507 methodHandle method = parse_method(is_interface, |
0 | 2508 promoted_flags, |
6725
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|
2509 CHECK_NULL); |
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|
2510 |
0 | 2511 if (method->is_final()) { |
2512 *has_final_method = true; | |
2513 } | |
6934 | 2514 if (is_interface && !method->is_abstract() && !method->is_static()) { |
2515 // default method | |
2516 *has_default_methods = true; | |
2517 } | |
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|
2518 _methods->at_put(index, method()); |
0 | 2519 } |
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|
2520 |
0 | 2521 if (_need_verify && length > 1) { |
2522 // Check duplicated methods | |
2523 ResourceMark rm(THREAD); | |
2524 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2525 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2526 initialize_hashtable(names_and_sigs); | |
2527 bool dup = false; | |
2528 { | |
2529 debug_only(No_Safepoint_Verifier nsv;) | |
2530 for (int i = 0; i < length; i++) { | |
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|
2531 Method* m = _methods->at(i); |
0 | 2532 // If no duplicates, add name/signature in hashtable names_and_sigs. |
2533 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2534 dup = true; | |
2535 break; | |
2536 } | |
2537 } | |
2538 } | |
2539 if (dup) { | |
2540 classfile_parse_error("Duplicate method name&signature in class file %s", | |
6725
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|
2541 CHECK_NULL); |
0 | 2542 } |
2543 } | |
2544 } | |
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2545 return _methods; |
0 | 2546 } |
2547 | |
2548 | |
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|
2549 intArray* ClassFileParser::sort_methods(Array<Method*>* methods) { |
6725
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|
2550 int length = methods->length(); |
3245
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diff
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|
2551 // If JVMTI original method ordering or sharing is enabled we have to |
0 | 2552 // remember the original class file ordering. |
6725
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2553 // We temporarily use the vtable_index field in the Method* to store the |
0 | 2554 // class file index, so we can read in after calling qsort. |
3245
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diff
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|
2555 // Put the method ordering in the shared archive. |
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diff
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|
2556 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2557 for (int index = 0; index < length; index++) { |
6725
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|
2558 Method* m = methods->at(index); |
0 | 2559 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
2560 m->set_vtable_index(index); | |
2561 } | |
2562 } | |
2563 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
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|
2564 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
8031 | 2565 Method::sort_methods(methods); |
0 | 2566 |
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|
2567 intArray* method_ordering = NULL; |
3245
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|
2568 // If JVMTI original method ordering or sharing is enabled construct int |
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|
2569 // array remembering the original ordering |
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|
2570 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
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|
2571 method_ordering = new intArray(length); |
0 | 2572 for (int index = 0; index < length; index++) { |
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|
2573 Method* m = methods->at(index); |
0 | 2574 int old_index = m->vtable_index(); |
2575 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
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|
2576 method_ordering->at_put(index, old_index); |
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|
2577 m->set_vtable_index(Method::invalid_vtable_index); |
0 | 2578 } |
2579 } | |
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|
2580 return method_ordering; |
0 | 2581 } |
2582 | |
2583 | |
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|
2584 void ClassFileParser::parse_classfile_sourcefile_attribute(TRAPS) { |
0 | 2585 ClassFileStream* cfs = stream(); |
2586 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2587 u2 sourcefile_index = cfs->get_u2_fast(); | |
2588 check_property( | |
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|
2589 valid_symbol_at(sourcefile_index), |
0 | 2590 "Invalid SourceFile attribute at constant pool index %u in class file %s", |
2591 sourcefile_index, CHECK); | |
8719
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|
2592 set_class_sourcefile(_cp->symbol_at(sourcefile_index)); |
0 | 2593 } |
2594 | |
2595 | |
2596 | |
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|
2597 void ClassFileParser::parse_classfile_source_debug_extension_attribute(int length, TRAPS) { |
0 | 2598 ClassFileStream* cfs = stream(); |
2599 u1* sde_buffer = cfs->get_u1_buffer(); | |
2600 assert(sde_buffer != NULL, "null sde buffer"); | |
2601 | |
2602 // Don't bother storing it if there is no way to retrieve it | |
2603 if (JvmtiExport::can_get_source_debug_extension()) { | |
6226 | 2604 assert((length+1) > length, "Overflow checking"); |
2605 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
2606 for (int i = 0; i < length; i++) { | |
2607 sde[i] = sde_buffer[i]; | |
2608 } | |
2609 sde[length] = '\0'; | |
2610 set_class_sde_buffer((char*)sde, length); | |
0 | 2611 } |
2612 // Got utf8 string, set stream position forward | |
2613 cfs->skip_u1(length, CHECK); | |
2614 } | |
2615 | |
2616 | |
2617 // Inner classes can be static, private or protected (classic VM does this) | |
2618 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2619 | |
2620 // Return number of classes in the inner classes attribute table | |
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|
2621 u2 ClassFileParser::parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
5967
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|
2622 bool parsed_enclosingmethod_attribute, |
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|
2623 u2 enclosing_method_class_index, |
f7c4174b33ba
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|
2624 u2 enclosing_method_method_index, |
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|
2625 TRAPS) { |
0 | 2626 ClassFileStream* cfs = stream(); |
5967
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|
2627 u1* current_mark = cfs->current(); |
f7c4174b33ba
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|
2628 u2 length = 0; |
f7c4174b33ba
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|
2629 if (inner_classes_attribute_start != NULL) { |
f7c4174b33ba
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|
2630 cfs->set_current(inner_classes_attribute_start); |
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|
2631 cfs->guarantee_more(2, CHECK_0); // length |
f7c4174b33ba
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|
2632 length = cfs->get_u2_fast(); |
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|
2633 } |
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|
2634 |
f7c4174b33ba
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|
2635 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
f7c4174b33ba
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|
2636 // method data: |
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|
2637 // [inner_class_info_index, |
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2638 // outer_class_info_index, |
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2639 // inner_name_index, |
f7c4174b33ba
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|
2640 // inner_class_access_flags, |
f7c4174b33ba
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|
2641 // ... |
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2642 // enclosing_method_class_index, |
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|
2643 // enclosing_method_method_index] |
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|
2644 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
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2645 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(_loader_data, size, CHECK_0); |
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2646 _inner_classes = inner_classes; |
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2647 |
0 | 2648 int index = 0; |
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2649 int cp_size = _cp->length(); |
0 | 2650 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 |
2651 for (int n = 0; n < length; n++) { | |
2652 // Inner class index | |
2653 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2654 check_property( | |
2655 inner_class_info_index == 0 || | |
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2656 valid_klass_reference_at(inner_class_info_index), |
0 | 2657 "inner_class_info_index %u has bad constant type in class file %s", |
2658 inner_class_info_index, CHECK_0); | |
2659 // Outer class index | |
2660 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2661 check_property( | |
2662 outer_class_info_index == 0 || | |
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changeset
|
2663 valid_klass_reference_at(outer_class_info_index), |
0 | 2664 "outer_class_info_index %u has bad constant type in class file %s", |
2665 outer_class_info_index, CHECK_0); | |
2666 // Inner class name | |
2667 u2 inner_name_index = cfs->get_u2_fast(); | |
2668 check_property( | |
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2669 inner_name_index == 0 || valid_symbol_at(inner_name_index), |
0 | 2670 "inner_name_index %u has bad constant type in class file %s", |
2671 inner_name_index, CHECK_0); | |
2672 if (_need_verify) { | |
2673 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2674 "Class is both outer and inner class in class file %s", CHECK_0); | |
2675 } | |
2676 // Access flags | |
2677 AccessFlags inner_access_flags; | |
2678 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2679 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2680 // Set abstract bit for old class files for backward compatibility | |
2681 flags |= JVM_ACC_ABSTRACT; | |
2682 } | |
2683 verify_legal_class_modifiers(flags, CHECK_0); | |
2684 inner_access_flags.set_flags(flags); | |
2685 | |
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2686 inner_classes->at_put(index++, inner_class_info_index); |
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|
2687 inner_classes->at_put(index++, outer_class_info_index); |
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2688 inner_classes->at_put(index++, inner_name_index); |
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|
2689 inner_classes->at_put(index++, inner_access_flags.as_short()); |
0 | 2690 } |
2691 | |
2692 // 4347400: make sure there's no duplicate entry in the classes array | |
2693 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
5967
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|
2694 for(int i = 0; i < length * 4; i += 4) { |
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|
2695 for(int j = i + 4; j < length * 4; j += 4) { |
6725
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2696 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
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2697 inner_classes->at(i+1) != inner_classes->at(j+1) || |
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2698 inner_classes->at(i+2) != inner_classes->at(j+2) || |
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|
2699 inner_classes->at(i+3) != inner_classes->at(j+3)), |
0 | 2700 "Duplicate entry in InnerClasses in class file %s", |
2701 CHECK_0); | |
2702 } | |
2703 } | |
2704 } | |
2705 | |
5967
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|
2706 // Set EnclosingMethod class and method indexes. |
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|
2707 if (parsed_enclosingmethod_attribute) { |
6725
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2708 inner_classes->at_put(index++, enclosing_method_class_index); |
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2709 inner_classes->at_put(index++, enclosing_method_method_index); |
5967
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|
2710 } |
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|
2711 assert(index == size, "wrong size"); |
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2712 |
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|
2713 // Restore buffer's current position. |
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|
2714 cfs->set_current(current_mark); |
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2715 |
0 | 2716 return length; |
2717 } | |
2718 | |
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2719 void ClassFileParser::parse_classfile_synthetic_attribute(TRAPS) { |
6222
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|
2720 set_class_synthetic_flag(true); |
0 | 2721 } |
2722 | |
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2723 void ClassFileParser::parse_classfile_signature_attribute(TRAPS) { |
0 | 2724 ClassFileStream* cfs = stream(); |
2725 u2 signature_index = cfs->get_u2(CHECK); | |
2726 check_property( | |
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|
2727 valid_symbol_at(signature_index), |
0 | 2728 "Invalid constant pool index %u in Signature attribute in class file %s", |
2729 signature_index, CHECK); | |
8719
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|
2730 set_class_generic_signature(_cp->symbol_at(signature_index)); |
0 | 2731 } |
2732 | |
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|
2733 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(u4 attribute_byte_length, TRAPS) { |
2011
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diff
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|
2734 ClassFileStream* cfs = stream(); |
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diff
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|
2735 u1* current_start = cfs->current(); |
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|
2736 |
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diff
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|
2737 cfs->guarantee_more(2, CHECK); // length |
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diff
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|
2738 int attribute_array_length = cfs->get_u2_fast(); |
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diff
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|
2739 |
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diff
changeset
|
2740 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
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diff
changeset
|
2741 "Short length on BootstrapMethods in class file %s", |
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diff
changeset
|
2742 CHECK); |
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diff
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|
2743 |
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diff
changeset
|
2744 // The attribute contains a counted array of counted tuples of shorts, |
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diff
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|
2745 // represending bootstrap specifiers: |
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diff
changeset
|
2746 // length*{bootstrap_method_index, argument_count*{argument_index}} |
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diff
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|
2747 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
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diff
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|
2748 // operand_count = number of shorts in attr, except for leading length |
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diff
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|
2749 |
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diff
changeset
|
2750 // The attribute is copied into a short[] array. |
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diff
changeset
|
2751 // The array begins with a series of short[2] pairs, one for each tuple. |
dad31fc330cd
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diff
changeset
|
2752 int index_size = (attribute_array_length * 2); |
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diff
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|
2753 |
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|
2754 Array<u2>* operands = MetadataFactory::new_array<u2>(_loader_data, index_size + operand_count, CHECK); |
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|
2755 |
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|
2756 // Eagerly assign operands so they will be deallocated with the constant |
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|
2757 // pool if there is an error. |
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|
2758 _cp->set_operands(operands); |
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diff
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|
2759 |
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diff
changeset
|
2760 int operand_fill_index = index_size; |
8719
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|
2761 int cp_size = _cp->length(); |
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diff
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|
2762 |
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diff
changeset
|
2763 for (int n = 0; n < attribute_array_length; n++) { |
dad31fc330cd
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parents:
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diff
changeset
|
2764 // Store a 32-bit offset into the header of the operand array. |
6725
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|
2765 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
2011
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diff
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|
2766 |
dad31fc330cd
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diff
changeset
|
2767 // Read a bootstrap specifier. |
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diff
changeset
|
2768 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
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jrose
parents:
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diff
changeset
|
2769 u2 bootstrap_method_index = cfs->get_u2_fast(); |
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diff
changeset
|
2770 u2 argument_count = cfs->get_u2_fast(); |
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diff
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|
2771 check_property( |
dad31fc330cd
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diff
changeset
|
2772 valid_cp_range(bootstrap_method_index, cp_size) && |
8719
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|
2773 _cp->tag_at(bootstrap_method_index).is_method_handle(), |
2011
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parents:
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diff
changeset
|
2774 "bootstrap_method_index %u has bad constant type in class file %s", |
2085 | 2775 bootstrap_method_index, |
2011
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diff
changeset
|
2776 CHECK); |
6725
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changeset
|
2777 operands->at_put(operand_fill_index++, bootstrap_method_index); |
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|
2778 operands->at_put(operand_fill_index++, argument_count); |
2011
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diff
changeset
|
2779 |
dad31fc330cd
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1972
diff
changeset
|
2780 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
dad31fc330cd
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parents:
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diff
changeset
|
2781 for (int j = 0; j < argument_count; j++) { |
2085 | 2782 u2 argument_index = cfs->get_u2_fast(); |
2011
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diff
changeset
|
2783 check_property( |
2085 | 2784 valid_cp_range(argument_index, cp_size) && |
8719
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|
2785 _cp->tag_at(argument_index).is_loadable_constant(), |
2011
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diff
changeset
|
2786 "argument_index %u has bad constant type in class file %s", |
2085 | 2787 argument_index, |
2011
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diff
changeset
|
2788 CHECK); |
6725
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changeset
|
2789 operands->at_put(operand_fill_index++, argument_index); |
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diff
changeset
|
2790 } |
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diff
changeset
|
2791 } |
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diff
changeset
|
2792 |
6725
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changeset
|
2793 assert(operand_fill_index == operands->length(), "exact fill"); |
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|
2794 assert(ConstantPool::operand_array_length(operands) == attribute_array_length, "correct decode"); |
2011
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diff
changeset
|
2795 |
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diff
changeset
|
2796 u1* current_end = cfs->current(); |
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diff
changeset
|
2797 guarantee_property(current_end == current_start + attribute_byte_length, |
dad31fc330cd
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parents:
1972
diff
changeset
|
2798 "Bad length on BootstrapMethods in class file %s", |
dad31fc330cd
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diff
changeset
|
2799 CHECK); |
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diff
changeset
|
2800 } |
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diff
changeset
|
2801 |
8719
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|
2802 void ClassFileParser::parse_classfile_attributes(ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
6222
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6711908: JVM needs direct access to some annotations
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diff
changeset
|
2803 TRAPS) { |
0 | 2804 ClassFileStream* cfs = stream(); |
2805 // Set inner classes attribute to default sentinel | |
8719
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diff
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|
2806 _inner_classes = Universe::the_empty_short_array(); |
0 | 2807 cfs->guarantee_more(2, CHECK); // attributes_count |
2808 u2 attributes_count = cfs->get_u2_fast(); | |
2809 bool parsed_sourcefile_attribute = false; | |
2810 bool parsed_innerclasses_attribute = false; | |
2811 bool parsed_enclosingmethod_attribute = false; | |
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diff
changeset
|
2812 bool parsed_bootstrap_methods_attribute = false; |
0 | 2813 u1* runtime_visible_annotations = NULL; |
2814 int runtime_visible_annotations_length = 0; | |
2815 u1* runtime_invisible_annotations = NULL; | |
2816 int runtime_invisible_annotations_length = 0; | |
7457
35431a769282
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|
2817 u1* runtime_visible_type_annotations = NULL; |
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7187
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changeset
|
2818 int runtime_visible_type_annotations_length = 0; |
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7187
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|
2819 u1* runtime_invisible_type_annotations = NULL; |
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7187
diff
changeset
|
2820 int runtime_invisible_type_annotations_length = 0; |
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changeset
|
2821 u1* inner_classes_attribute_start = NULL; |
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changeset
|
2822 u4 inner_classes_attribute_length = 0; |
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changeset
|
2823 u2 enclosing_method_class_index = 0; |
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jiangli
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changeset
|
2824 u2 enclosing_method_method_index = 0; |
0 | 2825 // Iterate over attributes |
2826 while (attributes_count--) { | |
2827 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2828 u2 attribute_name_index = cfs->get_u2_fast(); | |
2829 u4 attribute_length = cfs->get_u4_fast(); | |
2830 check_property( | |
8719
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diff
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|
2831 valid_symbol_at(attribute_name_index), |
0 | 2832 "Attribute name has bad constant pool index %u in class file %s", |
2833 attribute_name_index, CHECK); | |
8719
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|
2834 Symbol* tag = _cp->symbol_at(attribute_name_index); |
0 | 2835 if (tag == vmSymbols::tag_source_file()) { |
2836 // Check for SourceFile tag | |
2837 if (_need_verify) { | |
2838 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2839 } | |
2840 if (parsed_sourcefile_attribute) { | |
2841 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2842 } else { | |
2843 parsed_sourcefile_attribute = true; | |
2844 } | |
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changeset
|
2845 parse_classfile_sourcefile_attribute(CHECK); |
0 | 2846 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
2847 // Check for SourceDebugExtension tag | |
8719
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diff
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|
2848 parse_classfile_source_debug_extension_attribute((int)attribute_length, CHECK); |
0 | 2849 } else if (tag == vmSymbols::tag_inner_classes()) { |
2850 // Check for InnerClasses tag | |
2851 if (parsed_innerclasses_attribute) { | |
2852 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2853 } else { | |
2854 parsed_innerclasses_attribute = true; | |
2855 } | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2856 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:
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diff
changeset
|
2857 inner_classes_attribute_length = attribute_length; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2858 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
0 | 2859 } else if (tag == vmSymbols::tag_synthetic()) { |
2860 // Check for Synthetic tag | |
2861 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2862 if (attribute_length != 0) { | |
2863 classfile_parse_error( | |
2864 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2865 attribute_length, CHECK); | |
2866 } | |
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|
2867 parse_classfile_synthetic_attribute(CHECK); |
0 | 2868 } else if (tag == vmSymbols::tag_deprecated()) { |
2869 // Check for Deprecatd tag - 4276120 | |
2870 if (attribute_length != 0) { | |
2871 classfile_parse_error( | |
2872 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2873 attribute_length, CHECK); | |
2874 } | |
2875 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2876 if (tag == vmSymbols::tag_signature()) { | |
2877 if (attribute_length != 2) { | |
2878 classfile_parse_error( | |
2879 "Wrong Signature attribute length %u in class file %s", | |
2880 attribute_length, CHECK); | |
2881 } | |
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|
2882 parse_classfile_signature_attribute(CHECK); |
0 | 2883 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
2884 runtime_visible_annotations_length = attribute_length; | |
2885 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2886 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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|
2887 parse_annotations(runtime_visible_annotations, |
6222
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6711908: JVM needs direct access to some annotations
jrose
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diff
changeset
|
2888 runtime_visible_annotations_length, |
6d8f36bcef55
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jrose
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diff
changeset
|
2889 parsed_annotations, |
6d8f36bcef55
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jrose
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diff
changeset
|
2890 CHECK); |
0 | 2891 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
2892 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2893 runtime_invisible_annotations_length = attribute_length; | |
2894 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2895 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2896 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2897 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2898 if (parsed_enclosingmethod_attribute) { | |
2899 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2900 } else { | |
2901 parsed_enclosingmethod_attribute = true; | |
2902 } | |
2903 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
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diff
changeset
|
2904 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:
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diff
changeset
|
2905 enclosing_method_method_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
changeset
|
2906 if (enclosing_method_class_index == 0) { |
0 | 2907 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
2908 } | |
2909 // Validate the constant pool indices and types | |
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|
2910 check_property(valid_klass_reference_at(enclosing_method_class_index), |
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|
2911 "Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2912 if (enclosing_method_method_index != 0 && |
8719
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|
2913 (!_cp->is_within_bounds(enclosing_method_method_index) || |
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diff
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|
2914 !_cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
0 | 2915 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
2916 } | |
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
|
2917 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
dad31fc330cd
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diff
changeset
|
2918 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2919 if (parsed_bootstrap_methods_attribute) |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2920 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
dad31fc330cd
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jrose
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diff
changeset
|
2921 parsed_bootstrap_methods_attribute = true; |
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|
2922 parse_classfile_bootstrap_methods_attribute(attribute_length, CHECK); |
7457
35431a769282
8004823: Add VM support for type annotation reflection
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diff
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|
2923 } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
35431a769282
8004823: Add VM support for type annotation reflection
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parents:
7187
diff
changeset
|
2924 runtime_visible_type_annotations_length = attribute_length; |
35431a769282
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diff
changeset
|
2925 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
35431a769282
8004823: Add VM support for type annotation reflection
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parents:
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diff
changeset
|
2926 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
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diff
changeset
|
2927 // No need for the VM to parse Type annotations |
35431a769282
8004823: Add VM support for type annotation reflection
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changeset
|
2928 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
35431a769282
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changeset
|
2929 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
35431a769282
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stefank
parents:
7187
diff
changeset
|
2930 runtime_invisible_type_annotations_length = attribute_length; |
35431a769282
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stefank
parents:
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diff
changeset
|
2931 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
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diff
changeset
|
2932 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
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diff
changeset
|
2933 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 2934 } else { |
2935 // Unknown attribute | |
2936 cfs->skip_u1(attribute_length, CHECK); | |
2937 } | |
2938 } else { | |
2939 // Unknown attribute | |
2940 cfs->skip_u1(attribute_length, CHECK); | |
2941 } | |
2942 } | |
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|
2943 _annotations = assemble_annotations(runtime_visible_annotations, |
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|
2944 runtime_visible_annotations_length, |
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|
2945 runtime_invisible_annotations, |
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changeset
|
2946 runtime_invisible_annotations_length, |
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changeset
|
2947 CHECK); |
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|
2948 _type_annotations = assemble_annotations(runtime_visible_type_annotations, |
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|
2949 runtime_visible_type_annotations_length, |
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|
2950 runtime_invisible_type_annotations, |
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diff
changeset
|
2951 runtime_invisible_type_annotations_length, |
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diff
changeset
|
2952 CHECK); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2953 |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2954 if (parsed_innerclasses_attribute || parsed_enclosingmethod_attribute) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2955 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
|
2956 inner_classes_attribute_start, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2957 parsed_innerclasses_attribute, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2958 enclosing_method_class_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2959 enclosing_method_method_index, |
8719
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|
2960 CHECK); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2961 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
|
2962 guarantee_property( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2963 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
|
2964 "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
|
2965 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2966 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2967 |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2968 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
|
2969 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
|
2970 "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
|
2971 } |
0 | 2972 } |
2973 | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2974 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2975 if (_synthetic_flag) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2976 k->set_is_synthetic(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2977 if (_sourcefile != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2978 _sourcefile->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2979 k->set_source_file_name(_sourcefile); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2980 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2981 if (_generic_signature != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2982 _generic_signature->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2983 k->set_generic_signature(_generic_signature); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2984 } |
6226 | 2985 if (_sde_buffer != NULL) { |
2986 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
2987 } | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2988 } |
0 | 2989 |
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|
2990 // Transfer ownership of metadata allocated to the InstanceKlass. |
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coleenp
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changeset
|
2991 void ClassFileParser::apply_parsed_class_metadata( |
c8b31b461e1a
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|
2992 instanceKlassHandle this_klass, |
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coleenp
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|
2993 int java_fields_count, TRAPS) { |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
2994 // Assign annotations if needed |
c8b31b461e1a
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changeset
|
2995 if (_annotations != NULL || _type_annotations != NULL || |
c8b31b461e1a
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changeset
|
2996 _fields_annotations != NULL || _fields_type_annotations != NULL) { |
c8b31b461e1a
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coleenp
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changeset
|
2997 Annotations* annotations = Annotations::allocate(_loader_data, CHECK); |
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coleenp
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changeset
|
2998 annotations->set_class_annotations(_annotations); |
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coleenp
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changeset
|
2999 annotations->set_class_type_annotations(_type_annotations); |
c8b31b461e1a
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|
3000 annotations->set_fields_annotations(_fields_annotations); |
c8b31b461e1a
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changeset
|
3001 annotations->set_fields_type_annotations(_fields_type_annotations); |
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changeset
|
3002 this_klass->set_annotations(annotations); |
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changeset
|
3003 } |
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changeset
|
3004 |
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changeset
|
3005 _cp->set_pool_holder(this_klass()); |
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3006 this_klass->set_constants(_cp); |
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3007 this_klass->set_fields(_fields, java_fields_count); |
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3008 this_klass->set_methods(_methods); |
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3009 this_klass->set_inner_classes(_inner_classes); |
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3010 this_klass->set_local_interfaces(_local_interfaces); |
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3011 this_klass->set_transitive_interfaces(_transitive_interfaces); |
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3012 |
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3013 // Clear out these fields so they don't get deallocated by the destructor |
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3014 clear_class_metadata(); |
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3015 } |
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3016 |
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3017 AnnotationArray* ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, |
6831
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3018 int runtime_visible_annotations_length, |
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3019 u1* runtime_invisible_annotations, |
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3020 int runtime_invisible_annotations_length, TRAPS) { |
6725
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3021 AnnotationArray* annotations = NULL; |
0 | 3022 if (runtime_visible_annotations != NULL || |
3023 runtime_invisible_annotations != NULL) { | |
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3024 annotations = MetadataFactory::new_array<u1>(_loader_data, |
6725
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3025 runtime_visible_annotations_length + |
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3026 runtime_invisible_annotations_length, |
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3027 CHECK_(annotations)); |
0 | 3028 if (runtime_visible_annotations != NULL) { |
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3029 for (int i = 0; i < runtime_visible_annotations_length; i++) { |
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3030 annotations->at_put(i, runtime_visible_annotations[i]); |
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3031 } |
0 | 3032 } |
3033 if (runtime_invisible_annotations != NULL) { | |
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3034 for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
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3035 int append = runtime_visible_annotations_length+i; |
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3036 annotations->at_put(append, runtime_invisible_annotations[i]); |
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3037 } |
0 | 3038 } |
3039 } | |
3040 return annotations; | |
3041 } | |
3042 | |
3043 | |
10274 | 3044 #ifdef ASSERT |
6934 | 3045 static void parseAndPrintGenericSignatures( |
3046 instanceKlassHandle this_klass, TRAPS) { | |
3047 assert(ParseAllGenericSignatures == true, "Shouldn't call otherwise"); | |
3048 ResourceMark rm; | |
3049 | |
3050 if (this_klass->generic_signature() != NULL) { | |
3051 using namespace generic; | |
3052 ClassDescriptor* spec = ClassDescriptor::parse_generic_signature(this_klass(), CHECK); | |
3053 | |
3054 tty->print_cr("Parsing %s", this_klass->generic_signature()->as_C_string()); | |
3055 spec->print_on(tty); | |
3056 | |
3057 for (int i = 0; i < this_klass->methods()->length(); ++i) { | |
3058 Method* m = this_klass->methods()->at(i); | |
3059 MethodDescriptor* method_spec = MethodDescriptor::parse_generic_signature(m, spec); | |
3060 Symbol* sig = m->generic_signature(); | |
3061 if (sig == NULL) { | |
3062 sig = m->signature(); | |
3063 } | |
3064 tty->print_cr("Parsing %s", sig->as_C_string()); | |
3065 method_spec->print_on(tty); | |
3066 } | |
3067 } | |
3068 } | |
10274 | 3069 #endif // def ASSERT |
6934 | 3070 |
3071 | |
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3072 instanceKlassHandle ClassFileParser::parse_super_class(int super_class_index, |
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3073 TRAPS) { |
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3074 instanceKlassHandle super_klass; |
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3075 if (super_class_index == 0) { |
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3076 check_property(_class_name == vmSymbols::java_lang_Object(), |
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3077 "Invalid superclass index %u in class file %s", |
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3078 super_class_index, |
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3079 CHECK_NULL); |
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3080 } else { |
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3081 check_property(valid_klass_reference_at(super_class_index), |
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3082 "Invalid superclass index %u in class file %s", |
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3083 super_class_index, |
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3084 CHECK_NULL); |
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3085 // The class name should be legal because it is checked when parsing constant pool. |
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3086 // However, make sure it is not an array type. |
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3087 bool is_array = false; |
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3088 if (_cp->tag_at(super_class_index).is_klass()) { |
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3089 super_klass = instanceKlassHandle(THREAD, _cp->resolved_klass_at(super_class_index)); |
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3090 if (_need_verify) |
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3091 is_array = super_klass->oop_is_array(); |
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3092 } else if (_need_verify) { |
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3093 is_array = (_cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
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3094 } |
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3095 if (_need_verify) { |
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3096 guarantee_property(!is_array, |
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3097 "Bad superclass name in class file %s", CHECK_NULL); |
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3098 } |
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3099 } |
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3100 return super_klass; |
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3101 } |
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3102 |
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3103 |
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3104 // Values needed for oopmap and InstanceKlass creation |
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3105 class FieldLayoutInfo : public StackObj { |
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3106 public: |
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3107 int* nonstatic_oop_offsets; |
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3108 unsigned int* nonstatic_oop_counts; |
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3109 unsigned int nonstatic_oop_map_count; |
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3110 unsigned int total_oop_map_count; |
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3111 int instance_size; |
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3112 int nonstatic_field_size; |
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3113 int static_field_size; |
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3114 bool has_nonstatic_fields; |
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3115 }; |
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3116 |
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3117 // Layout fields and fill in FieldLayoutInfo. Could use more refactoring! |
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3118 void ClassFileParser::layout_fields(Handle class_loader, |
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3119 FieldAllocationCount* fac, |
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3120 ClassAnnotationCollector* parsed_annotations, |
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3121 FieldLayoutInfo* info, |
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3122 TRAPS) { |
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3123 |
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3124 // Field size and offset computation |
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3125 int nonstatic_field_size = _super_klass() == NULL ? 0 : _super_klass()->nonstatic_field_size(); |
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3126 int next_static_oop_offset; |
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3127 int next_static_double_offset; |
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3128 int next_static_word_offset; |
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3129 int next_static_short_offset; |
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3130 int next_static_byte_offset; |
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3131 int next_nonstatic_oop_offset; |
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3132 int next_nonstatic_double_offset; |
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3133 int next_nonstatic_word_offset; |
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3134 int next_nonstatic_short_offset; |
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3135 int next_nonstatic_byte_offset; |
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3136 int first_nonstatic_oop_offset; |
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3137 int next_nonstatic_field_offset; |
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3138 int next_nonstatic_padded_offset; |
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3139 |
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3140 // Count the contended fields by type. |
10314 | 3141 // |
3142 // We ignore static fields, because @Contended is not supported for them. | |
3143 // The layout code below will also ignore the static fields. | |
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3144 int nonstatic_contended_count = 0; |
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3145 FieldAllocationCount fac_contended; |
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3146 for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
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3147 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
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3148 if (fs.is_contended()) { |
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3149 fac_contended.count[atype]++; |
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3150 if (!fs.access_flags().is_static()) { |
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3151 nonstatic_contended_count++; |
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3152 } |
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3153 } |
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3154 } |
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3155 int contended_count = nonstatic_contended_count; |
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3156 |
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3157 |
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3158 // Calculate the starting byte offsets |
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3159 next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
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3160 next_static_double_offset = next_static_oop_offset + |
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3161 ((fac->count[STATIC_OOP]) * heapOopSize); |
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3162 if ( fac->count[STATIC_DOUBLE] && |
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3163 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
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3164 Universe::field_type_should_be_aligned(T_LONG)) ) { |
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3165 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); |
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3166 } |
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3167 |
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3168 next_static_word_offset = next_static_double_offset + |
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3169 ((fac->count[STATIC_DOUBLE]) * BytesPerLong); |
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3170 next_static_short_offset = next_static_word_offset + |
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3171 ((fac->count[STATIC_WORD]) * BytesPerInt); |
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3172 next_static_byte_offset = next_static_short_offset + |
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3173 ((fac->count[STATIC_SHORT]) * BytesPerShort); |
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3174 |
10314 | 3175 int nonstatic_fields_start = instanceOopDesc::base_offset_in_bytes() + |
3176 nonstatic_field_size * heapOopSize; | |
3177 | |
3178 next_nonstatic_field_offset = nonstatic_fields_start; | |
3179 | |
3180 // Class is contended, pad before all the fields | |
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3181 if (parsed_annotations->is_contended()) { |
10314 | 3182 next_nonstatic_field_offset += ContendedPaddingWidth; |
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3183 } |
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3184 |
10314 | 3185 // Compute the non-contended fields count |
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3186 unsigned int nonstatic_double_count = fac->count[NONSTATIC_DOUBLE] - fac_contended.count[NONSTATIC_DOUBLE]; |
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3187 unsigned int nonstatic_word_count = fac->count[NONSTATIC_WORD] - fac_contended.count[NONSTATIC_WORD]; |
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3188 unsigned int nonstatic_short_count = fac->count[NONSTATIC_SHORT] - fac_contended.count[NONSTATIC_SHORT]; |
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3189 unsigned int nonstatic_byte_count = fac->count[NONSTATIC_BYTE] - fac_contended.count[NONSTATIC_BYTE]; |
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3190 unsigned int nonstatic_oop_count = fac->count[NONSTATIC_OOP] - fac_contended.count[NONSTATIC_OOP]; |
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3191 |
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3192 bool super_has_nonstatic_fields = |
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3193 (_super_klass() != NULL && _super_klass->has_nonstatic_fields()); |
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3194 bool has_nonstatic_fields = super_has_nonstatic_fields || |
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3195 ((nonstatic_double_count + nonstatic_word_count + |
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3196 nonstatic_short_count + nonstatic_byte_count + |
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3197 nonstatic_oop_count) != 0); |
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3198 |
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3199 |
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3200 // Prepare list of oops for oop map generation. |
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3201 int* nonstatic_oop_offsets; |
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3202 unsigned int* nonstatic_oop_counts; |
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3203 unsigned int nonstatic_oop_map_count = 0; |
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3204 |
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3205 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( |
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3206 THREAD, int, nonstatic_oop_count + 1); |
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3207 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
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3208 THREAD, unsigned int, nonstatic_oop_count + 1); |
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3209 |
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3210 first_nonstatic_oop_offset = 0; // will be set for first oop field |
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3211 |
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3212 bool compact_fields = CompactFields; |
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3213 int allocation_style = FieldsAllocationStyle; |
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3214 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
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3215 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
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3216 allocation_style = 1; // Optimistic |
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3217 } |
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3218 |
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3219 // The next classes have predefined hard-coded fields offsets |
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3220 // (see in JavaClasses::compute_hard_coded_offsets()). |
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3221 // Use default fields allocation order for them. |
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3222 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && |
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3223 (_class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
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3224 _class_name == vmSymbols::java_lang_Class() || |
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3225 _class_name == vmSymbols::java_lang_ClassLoader() || |
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3226 _class_name == vmSymbols::java_lang_ref_Reference() || |
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3227 _class_name == vmSymbols::java_lang_ref_SoftReference() || |
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3228 _class_name == vmSymbols::java_lang_StackTraceElement() || |
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3229 _class_name == vmSymbols::java_lang_String() || |
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3230 _class_name == vmSymbols::java_lang_Throwable() || |
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3231 _class_name == vmSymbols::java_lang_Boolean() || |
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3232 _class_name == vmSymbols::java_lang_Character() || |
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3233 _class_name == vmSymbols::java_lang_Float() || |
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3234 _class_name == vmSymbols::java_lang_Double() || |
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3235 _class_name == vmSymbols::java_lang_Byte() || |
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3236 _class_name == vmSymbols::java_lang_Short() || |
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3237 _class_name == vmSymbols::java_lang_Integer() || |
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3238 _class_name == vmSymbols::java_lang_Long())) { |
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3239 allocation_style = 0; // Allocate oops first |
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3240 compact_fields = false; // Don't compact fields |
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3241 } |
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3242 |
10314 | 3243 // Rearrange fields for a given allocation style |
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3244 if( allocation_style == 0 ) { |
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3245 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes, padded fields |
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3246 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3247 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3248 (nonstatic_oop_count * heapOopSize); |
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3249 } else if( allocation_style == 1 ) { |
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3250 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops, padded fields |
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3251 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3252 } else if( allocation_style == 2 ) { |
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3253 // Fields allocation: oops fields in super and sub classes are together. |
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3254 if( nonstatic_field_size > 0 && _super_klass() != NULL && |
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3255 _super_klass->nonstatic_oop_map_size() > 0 ) { |
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3256 unsigned int map_count = _super_klass->nonstatic_oop_map_count(); |
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3257 OopMapBlock* first_map = _super_klass->start_of_nonstatic_oop_maps(); |
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3258 OopMapBlock* last_map = first_map + map_count - 1; |
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3259 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
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3260 if (next_offset == next_nonstatic_field_offset) { |
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3261 allocation_style = 0; // allocate oops first |
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3262 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3263 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3264 (nonstatic_oop_count * heapOopSize); |
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3265 } |
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3266 } |
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3267 if( allocation_style == 2 ) { |
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3268 allocation_style = 1; // allocate oops last |
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3269 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3270 } |
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3271 } else { |
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3272 ShouldNotReachHere(); |
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3273 } |
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3274 |
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3275 int nonstatic_oop_space_count = 0; |
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3276 int nonstatic_word_space_count = 0; |
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3277 int nonstatic_short_space_count = 0; |
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3278 int nonstatic_byte_space_count = 0; |
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3279 int nonstatic_oop_space_offset; |
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3280 int nonstatic_word_space_offset; |
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|
3281 int nonstatic_short_space_offset; |
c8b31b461e1a
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coleenp
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diff
changeset
|
3282 int nonstatic_byte_space_offset; |
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coleenp
parents:
8716
diff
changeset
|
3283 |
10314 | 3284 // Try to squeeze some of the fields into the gaps due to |
3285 // long/double alignment. | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3286 if( nonstatic_double_count > 0 ) { |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3287 int offset = next_nonstatic_double_offset; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3288 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3289 if( compact_fields && offset != next_nonstatic_double_offset ) { |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3290 // Allocate available fields into the gap before double field. |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3291 int length = next_nonstatic_double_offset - offset; |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3292 assert(length == BytesPerInt, ""); |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3293 nonstatic_word_space_offset = offset; |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3294 if( nonstatic_word_count > 0 ) { |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3295 nonstatic_word_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3296 nonstatic_word_space_count = 1; // Only one will fit |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3297 length -= BytesPerInt; |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3298 offset += BytesPerInt; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3299 } |
c8b31b461e1a
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parents:
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diff
changeset
|
3300 nonstatic_short_space_offset = offset; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3301 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3302 nonstatic_short_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3303 nonstatic_short_space_count += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3304 length -= BytesPerShort; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3305 offset += BytesPerShort; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3306 } |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3307 nonstatic_byte_space_offset = offset; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3308 while( length > 0 && nonstatic_byte_count > 0 ) { |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3309 nonstatic_byte_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3310 nonstatic_byte_space_count += 1; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3311 length -= 1; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3312 } |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3313 // Allocate oop field in the gap if there are no other fields for that. |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3314 nonstatic_oop_space_offset = offset; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3315 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3316 allocation_style != 0 ) { // when oop fields not first |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3317 nonstatic_oop_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3318 nonstatic_oop_space_count = 1; // Only one will fit |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3319 length -= heapOopSize; |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3320 offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3321 } |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3322 } |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3323 } |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3324 |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3325 next_nonstatic_word_offset = next_nonstatic_double_offset + |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3326 (nonstatic_double_count * BytesPerLong); |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3327 next_nonstatic_short_offset = next_nonstatic_word_offset + |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3328 (nonstatic_word_count * BytesPerInt); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3329 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
|
3330 (nonstatic_short_count * BytesPerShort); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3331 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
|
3332 nonstatic_byte_count; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3333 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3334 // 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
|
3335 if( allocation_style == 1 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3336 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
|
3337 if( nonstatic_oop_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3338 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
|
3339 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3340 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
|
3341 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3342 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3343 // 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
|
3344 // 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
|
3345 // 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
|
3346 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
|
3347 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3348 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3349 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3350 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3351 // contended instance fields are handled below |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3352 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
|
3353 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3354 int real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3355 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3356 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3357 // pack the rest of the fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3358 switch (atype) { |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3359 case STATIC_OOP: |
c8b31b461e1a
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coleenp
parents:
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diff
changeset
|
3360 real_offset = next_static_oop_offset; |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3361 next_static_oop_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3362 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3363 case STATIC_BYTE: |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3364 real_offset = next_static_byte_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3365 next_static_byte_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3366 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3367 case STATIC_SHORT: |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3368 real_offset = next_static_short_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3369 next_static_short_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3370 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3371 case STATIC_WORD: |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3372 real_offset = next_static_word_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3373 next_static_word_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3374 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3375 case STATIC_DOUBLE: |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3376 real_offset = next_static_double_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3377 next_static_double_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3378 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3379 case NONSTATIC_OOP: |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3380 if( nonstatic_oop_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3381 real_offset = nonstatic_oop_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3382 nonstatic_oop_space_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3383 nonstatic_oop_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3384 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3385 real_offset = next_nonstatic_oop_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3386 next_nonstatic_oop_offset += heapOopSize; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3387 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3388 // Update oop maps |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3389 if( nonstatic_oop_map_count > 0 && |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3390 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
|
3391 real_offset - |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3392 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
|
3393 heapOopSize ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3394 // Extend current oop map |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3395 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
|
3396 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3397 // Create new oop map |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3398 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
|
3399 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
|
3400 nonstatic_oop_map_count += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3401 if( first_nonstatic_oop_offset == 0 ) { // Undefined |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3402 first_nonstatic_oop_offset = real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3403 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3404 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3405 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3406 case NONSTATIC_BYTE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3407 if( nonstatic_byte_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3408 real_offset = nonstatic_byte_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3409 nonstatic_byte_space_offset += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3410 nonstatic_byte_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3411 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3412 real_offset = next_nonstatic_byte_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3413 next_nonstatic_byte_offset += 1; |
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 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3416 case NONSTATIC_SHORT: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3417 if( nonstatic_short_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3418 real_offset = nonstatic_short_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3419 nonstatic_short_space_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3420 nonstatic_short_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3421 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3422 real_offset = next_nonstatic_short_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3423 next_nonstatic_short_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3424 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3425 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3426 case NONSTATIC_WORD: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3427 if( nonstatic_word_space_count > 0 ) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3428 real_offset = nonstatic_word_space_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3429 nonstatic_word_space_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3430 nonstatic_word_space_count -= 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3431 } else { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3432 real_offset = next_nonstatic_word_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3433 next_nonstatic_word_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3434 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3435 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3436 case NONSTATIC_DOUBLE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3437 real_offset = next_nonstatic_double_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3438 next_nonstatic_double_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3439 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3440 default: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3441 ShouldNotReachHere(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3442 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3443 fs.set_offset(real_offset); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3444 } |
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 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3447 // Handle the contended cases. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3448 // |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3449 // 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
|
3450 // 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
|
3451 // the fields with full-width padding. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3452 // |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3453 // 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
|
3454 // for each field. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3455 if (contended_count > 0) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3456 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3457 // if there is at least one contended field, we need to have pre-padding for them |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3458 if (nonstatic_contended_count > 0) { |
10314 | 3459 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3460 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3461 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3462 // collect all contended groups |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3463 BitMap bm(_cp->size()); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3464 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
|
3465 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3466 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3467 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3468 if (fs.is_contended()) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3469 bm.set_bit(fs.contended_group()); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3470 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3471 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3472 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3473 int current_group = -1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3474 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
|
3475 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3476 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
|
3477 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3478 // skip already laid out fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3479 if (fs.is_offset_set()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3480 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3481 // 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
|
3482 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
|
3483 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3484 // handle statics below |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3485 if (fs.access_flags().is_static()) continue; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3486 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3487 int real_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3488 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3489 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3490 switch (atype) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3491 case NONSTATIC_BYTE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3492 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
|
3493 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3494 next_nonstatic_padded_offset += 1; |
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 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3497 case NONSTATIC_SHORT: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3498 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
|
3499 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3500 next_nonstatic_padded_offset += BytesPerShort; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3501 break; |
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 case NONSTATIC_WORD: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3504 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
|
3505 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3506 next_nonstatic_padded_offset += BytesPerInt; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3507 break; |
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 case NONSTATIC_DOUBLE: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3510 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
|
3511 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3512 next_nonstatic_padded_offset += BytesPerLong; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3513 break; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3514 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3515 case NONSTATIC_OOP: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3516 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
|
3517 real_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3518 next_nonstatic_padded_offset += heapOopSize; |
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 // Create new oop map |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3521 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
|
3522 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
|
3523 nonstatic_oop_map_count += 1; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3524 if( first_nonstatic_oop_offset == 0 ) { // Undefined |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3525 first_nonstatic_oop_offset = real_offset; |
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3526 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3527 break; |
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 default: |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3530 ShouldNotReachHere(); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3531 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3532 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3533 if (fs.contended_group() == 0) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3534 // 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
|
3535 // 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
|
3536 // 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
|
3537 // equivalence, and so requires intra-padding. |
10314 | 3538 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3539 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3540 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3541 fs.set_offset(real_offset); |
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8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3542 } // for |
c8b31b461e1a
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coleenp
parents:
8716
diff
changeset
|
3543 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
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diff
changeset
|
3544 // Start laying out the next group. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3545 // 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
|
3546 // 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
|
3547 // subclass fields and/or adjacent object. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3548 // 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
|
3549 if (current_group != 0) { |
10314 | 3550 next_nonstatic_padded_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3551 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3552 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3553 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3554 // handle static fields |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3555 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3556 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3557 // Size of instances |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3558 int notaligned_offset = next_nonstatic_padded_offset; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3559 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3560 // 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
|
3561 // 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
|
3562 // and/or adjacent object. |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3563 if (parsed_annotations->is_contended()) { |
10314 | 3564 notaligned_offset += ContendedPaddingWidth; |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3565 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3566 |
10314 | 3567 int nonstatic_fields_end = align_size_up(notaligned_offset, heapOopSize); |
3568 int instance_end = align_size_up(notaligned_offset, wordSize); | |
3569 int static_fields_end = align_size_up(next_static_byte_offset, wordSize); | |
3570 | |
3571 int static_field_size = (static_fields_end - | |
3572 InstanceMirrorKlass::offset_of_static_fields()) / wordSize; | |
3573 nonstatic_field_size = nonstatic_field_size + | |
3574 (nonstatic_fields_end - nonstatic_fields_start) / heapOopSize; | |
3575 | |
3576 int instance_size = align_object_size(instance_end / wordSize); | |
8719
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 assert(instance_size == align_object_size(align_size_up( |
10303
205dd30230e1
8012939: @Contended doesn't work correctly with inheritance
shade
parents:
10269
diff
changeset
|
3579 (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
|
3580 wordSize) / wordSize), "consistent layout helper value"); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3581 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3582 // 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
|
3583 const unsigned int total_oop_map_count = |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3584 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
|
3585 first_nonstatic_oop_offset); |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3586 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3587 #ifndef PRODUCT |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3588 if (PrintFieldLayout) { |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3589 print_field_layout(_class_name, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3590 _fields, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3591 _cp, |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3592 instance_size, |
10314 | 3593 nonstatic_fields_start, |
3594 nonstatic_fields_end, | |
3595 static_fields_end); | |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3596 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3597 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3598 #endif |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3599 // Pass back information needed for InstanceKlass creation |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3600 info->nonstatic_oop_offsets = nonstatic_oop_offsets; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3601 info->nonstatic_oop_counts = nonstatic_oop_counts; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3602 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
|
3603 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
|
3604 info->instance_size = instance_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3605 info->static_field_size = static_field_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3606 info->nonstatic_field_size = nonstatic_field_size; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3607 info->has_nonstatic_fields = has_nonstatic_fields; |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3608 } |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3609 |
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3610 |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3611 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3612 ClassLoaderData* loader_data, |
0 | 3613 Handle protection_domain, |
710 | 3614 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3615 GrowableArray<Handle>* cp_patches, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3616 TempNewSymbol& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
3617 bool verify, |
0 | 3618 TRAPS) { |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
3619 |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3620 // When a retransformable agent is attached, JVMTI caches the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3621 // class bytes that existed before the first retransformation. |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3622 // If RedefineClasses() was used before the retransformable |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3623 // agent attached, then the cached class bytes may not be the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3624 // original class bytes. |
0 | 3625 unsigned char *cached_class_file_bytes = NULL; |
3626 jint cached_class_file_length; | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3627 Handle class_loader(THREAD, loader_data->class_loader()); |
6934 | 3628 bool has_default_methods = false; |
3629 ResourceMark rm(THREAD); | |
0 | 3630 |
3631 ClassFileStream* cfs = stream(); | |
3632 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3633 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
|
3634 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3635 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3636 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3637 ClassLoader::perf_class_parse_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3638 NULL, |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3639 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
|
3640 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3641 PerfClassTraceTime::PARSE_CLASS); |
0 | 3642 |
8719
c8b31b461e1a
8003419: NPG: Clean up metadata created during class loading if failure
coleenp
parents:
8716
diff
changeset
|
3643 init_parsed_class_attributes(loader_data); |
0 | 3644 |
3645 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
|
3646 // 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
|
3647 // 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
|
3648 // 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
|
3649 // 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
|
3650 // avoid the bug described by 7126851. |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3651 JvmtiThreadState *state = jt->jvmti_thread_state(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3652 if (state != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3653 KlassHandle *h_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3654 state->get_class_being_redefined(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3655 if (h_class_being_redefined != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3656 instanceKlassHandle ikh_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3657 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3658 cached_class_file_bytes = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3659 ikh_class_being_redefined->get_cached_class_file_bytes(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3660 cached_class_file_length = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3661 ikh_class_being_redefined->get_cached_class_file_len(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3662 } |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3663 } |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3664 |
0 | 3665 unsigned char* ptr = cfs->buffer(); |
3666 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
3667 | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3668 JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
0 | 3669 &ptr, &end_ptr, |
3670 &cached_class_file_bytes, | |
3671 &cached_class_file_length); | |
3672 | |
3673 if (ptr != cfs->buffer()) { | |
3674 // JVMTI agent has modified class file data. | |
3675 // Set new class file stream using JVMTI agent modified | |
3676 // class file data. | |
3677 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
3678 set_stream(cfs); | |
3679 } | |
3680 } | |
3681 | |
710 | 3682 _host_klass = host_klass; |
431
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3683 _cp_patches = cp_patches; |
0 | 3684 |
3685 instanceKlassHandle nullHandle; | |
3686 | |
3687 // Figure out whether we can skip format checking (matching classic VM behavior) | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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changeset
|
3688 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
0 | 3689 |
3690 // Set the verify flag in stream | |
3691 cfs->set_verify(_need_verify); | |
3692 | |
3693 // Save the class file name for easier error message printing. | |
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3694 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
0 | 3695 |
3696 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
3697 // Magic value | |
3698 u4 magic = cfs->get_u4_fast(); | |
3699 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
3700 "Incompatible magic value %u in class file %s", | |
3701 magic, CHECK_(nullHandle)); | |
3702 | |
3703 // Version numbers | |
3704 u2 minor_version = cfs->get_u2_fast(); | |
3705 u2 major_version = cfs->get_u2_fast(); | |
3706 | |
3707 // Check version numbers - we check this even with verifier off | |
3708 if (!is_supported_version(major_version, minor_version)) { | |
2177
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3709 if (name == NULL) { |
0 | 3710 Exceptions::fthrow( |
3711 THREAD_AND_LOCATION, | |
2177
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3712 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3713 "Unsupported major.minor version %u.%u", |
3714 major_version, | |
3715 minor_version); | |
3716 } else { | |
3717 ResourceMark rm(THREAD); | |
3718 Exceptions::fthrow( | |
3719 THREAD_AND_LOCATION, | |
2177
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3720 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3721 "%s : Unsupported major.minor version %u.%u", |
3722 name->as_C_string(), | |
3723 major_version, | |
3724 minor_version); | |
3725 } | |
3726 return nullHandle; | |
3727 } | |
3728 | |
3729 _major_version = major_version; | |
3730 _minor_version = minor_version; | |
3731 | |
3732 | |
3733 // Check if verification needs to be relaxed for this class file | |
3734 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
3735 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
3736 | |
3737 // Constant pool | |
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3738 constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle)); |
2177
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3739 |
0 | 3740 int cp_size = cp->length(); |
3741 | |
3742 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
3743 | |
3744 // Access flags | |
3745 AccessFlags access_flags; | |
3746 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
3747 | |
3748 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
3749 // Set abstract bit for old class files for backward compatibility | |
3750 flags |= JVM_ACC_ABSTRACT; | |
3751 } | |
3752 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
3753 access_flags.set_flags(flags); | |
3754 | |
3755 // This class and superclass | |
3756 u2 this_class_index = cfs->get_u2_fast(); | |
3757 check_property( | |
3758 valid_cp_range(this_class_index, cp_size) && | |
3759 cp->tag_at(this_class_index).is_unresolved_klass(), | |
3760 "Invalid this class index %u in constant pool in class file %s", | |
3761 this_class_index, CHECK_(nullHandle)); | |
3762 | |
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3763 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
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3764 assert(class_name != NULL, "class_name can't be null"); |
0 | 3765 |
3766 // It's important to set parsed_name *before* resolving the super class. | |
3767 // (it's used for cleanup by the caller if parsing fails) | |
3768 parsed_name = class_name; | |
2177
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3769 // parsed_name is returned and can be used if there's an error, so add to |
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3770 // its reference count. Caller will decrement the refcount. |
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3771 parsed_name->increment_refcount(); |
0 | 3772 |
3773 // Update _class_name which could be null previously to be class_name | |
3774 _class_name = class_name; | |
3775 | |
3776 // Don't need to check whether this class name is legal or not. | |
3777 // It has been checked when constant pool is parsed. | |
3778 // However, make sure it is not an array type. | |
3779 if (_need_verify) { | |
3780 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
3781 "Bad class name in class file %s", | |
3782 CHECK_(nullHandle)); | |
3783 } | |
3784 | |
6725
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3785 Klass* preserve_this_klass; // for storing result across HandleMark |
0 | 3786 |
3787 // release all handles when parsing is done | |
3788 { HandleMark hm(THREAD); | |
3789 | |
3790 // Checks if name in class file matches requested name | |
2177
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3791 if (name != NULL && class_name != name) { |
0 | 3792 ResourceMark rm(THREAD); |
3793 Exceptions::fthrow( | |
3794 THREAD_AND_LOCATION, | |
2177
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3795 vmSymbols::java_lang_NoClassDefFoundError(), |
0 | 3796 "%s (wrong name: %s)", |
3797 name->as_C_string(), | |
3798 class_name->as_C_string() | |
3799 ); | |
3800 return nullHandle; | |
3801 } | |
3802 | |
3803 if (TraceClassLoadingPreorder) { | |
10128
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8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
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changeset
|
3804 tty->print("[Loading %s", (name != NULL) ? name->as_klass_external_name() : "NoName"); |
0 | 3805 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
3806 tty->print_cr("]"); | |
3807 } | |
3808 | |
3809 u2 super_class_index = cfs->get_u2_fast(); | |
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3810 instanceKlassHandle super_klass = parse_super_class(super_class_index, |
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3811 CHECK_NULL); |
0 | 3812 |
3813 // Interfaces | |
3814 u2 itfs_len = cfs->get_u2_fast(); | |
8719
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3815 Array<Klass*>* local_interfaces = |
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3816 parse_interfaces(itfs_len, protection_domain, _class_name, |
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3817 &has_default_methods, CHECK_(nullHandle)); |
0 | 3818 |
4744
cd5d8cafcc84
7123315: instanceKlass::_static_oop_field_count and instanceKlass::_java_fields_count should be u2 type.
jiangli
parents:
3938
diff
changeset
|
3819 u2 java_fields_count = 0; |
0 | 3820 // Fields (offsets are filled in later) |
3938 | 3821 FieldAllocationCount fac; |
8719
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3822 Array<u2>* fields = parse_fields(class_name, |
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3823 access_flags.is_interface(), |
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3824 &fac, &java_fields_count, |
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|
3825 CHECK_(nullHandle)); |
0 | 3826 // Methods |
3827 bool has_final_method = false; | |
3828 AccessFlags promoted_flags; | |
3829 promoted_flags.set_flags(0); | |
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3830 Array<Method*>* methods = parse_methods(access_flags.is_interface(), |
6831
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|
3831 &promoted_flags, |
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|
3832 &has_final_method, |
6934 | 3833 &has_default_methods, |
6831
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changeset
|
3834 CHECK_(nullHandle)); |
0 | 3835 |
6222
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diff
changeset
|
3836 // Additional attributes |
6d8f36bcef55
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|
3837 ClassAnnotationCollector parsed_annotations; |
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3838 parse_classfile_attributes(&parsed_annotations, CHECK_(nullHandle)); |
6222
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|
3839 |
6d8f36bcef55
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changeset
|
3840 // Make sure this is the end of class file stream |
6d8f36bcef55
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changeset
|
3841 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
6d8f36bcef55
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|
3842 |
0 | 3843 // We check super class after class file is parsed and format is checked |
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|
3844 if (super_class_index > 0 && super_klass.is_null()) { |
2177
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|
3845 Symbol* sk = cp->klass_name_at(super_class_index); |
0 | 3846 if (access_flags.is_interface()) { |
3847 // Before attempting to resolve the superclass, check for class format | |
3848 // errors not checked yet. | |
2177
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|
3849 guarantee_property(sk == vmSymbols::java_lang_Object(), |
0 | 3850 "Interfaces must have java.lang.Object as superclass in class file %s", |
3851 CHECK_(nullHandle)); | |
3852 } | |
6831
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changeset
|
3853 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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changeset
|
3854 class_loader, |
d8ce2825b193
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diff
changeset
|
3855 protection_domain, |
d8ce2825b193
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diff
changeset
|
3856 true, |
d8ce2825b193
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diff
changeset
|
3857 CHECK_(nullHandle)); |
875
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6857194: Add hotspot perf counters to aid class loading performance measurement
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changeset
|
3858 |
0 | 3859 KlassHandle kh (THREAD, k); |
3860 super_klass = instanceKlassHandle(THREAD, kh()); | |
431
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|
3861 } |
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|
3862 if (super_klass.not_null()) { |
6934 | 3863 |
3864 if (super_klass->has_default_methods()) { | |
3865 has_default_methods = true; | |
3866 } | |
3867 | |
0 | 3868 if (super_klass->is_interface()) { |
3869 ResourceMark rm(THREAD); | |
3870 Exceptions::fthrow( | |
3871 THREAD_AND_LOCATION, | |
2177
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|
3872 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 3873 "class %s has interface %s as super class", |
3874 class_name->as_klass_external_name(), | |
3875 super_klass->external_name() | |
3876 ); | |
3877 return nullHandle; | |
3878 } | |
3879 // Make sure super class is not final | |
3880 if (super_klass->is_final()) { | |
3881 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
3882 } | |
3883 } | |
3884 | |
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|
3885 // save super klass for error handling. |
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|
3886 _super_klass = super_klass; |
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3887 |
0 | 3888 // Compute the transitive list of all unique interfaces implemented by this class |
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3889 _transitive_interfaces = |
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|
3890 compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); |
0 | 3891 |
3892 // sort methods | |
8719
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3893 intArray* method_ordering = sort_methods(methods); |
0 | 3894 |
3895 // promote flags from parse_methods() to the klass' flags | |
3896 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
3897 | |
3898 // Size of Java vtable (in words) | |
3899 int vtable_size = 0; | |
3900 int itable_size = 0; | |
3901 int num_miranda_methods = 0; | |
3902 | |
6934 | 3903 GrowableArray<Method*> all_mirandas(20); |
3904 | |
3905 klassVtable::compute_vtable_size_and_num_mirandas( | |
3906 &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, | |
3907 access_flags, class_loader, class_name, local_interfaces, | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
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changeset
|
3908 CHECK_(nullHandle)); |
0 | 3909 |
3910 // Size of Java itable (in words) | |
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3911 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(_transitive_interfaces); |
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3912 |
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|
3913 FieldLayoutInfo info; |
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|
3914 layout_fields(class_loader, &fac, &parsed_annotations, &info, CHECK_NULL); |
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3915 |
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3916 int total_oop_map_size2 = |
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3917 InstanceKlass::nonstatic_oop_map_size(info.total_oop_map_count); |
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3918 |
0 | 3919 // Compute reference type |
3920 ReferenceType rt; | |
3921 if (super_klass() == NULL) { | |
3922 rt = REF_NONE; | |
3923 } else { | |
3924 rt = super_klass->reference_type(); | |
3925 } | |
3926 | |
6725
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3927 // We can now create the basic Klass* for this klass |
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3928 _klass = InstanceKlass::allocate_instance_klass(loader_data, |
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3929 vtable_size, |
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|
3930 itable_size, |
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|
3931 info.static_field_size, |
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|
3932 total_oop_map_size2, |
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|
3933 rt, |
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|
3934 access_flags, |
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|
3935 name, |
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|
3936 super_klass(), |
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|
3937 !host_klass.is_null(), |
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|
3938 CHECK_(nullHandle)); |
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|
3939 instanceKlassHandle this_klass (THREAD, _klass); |
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3940 |
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|
3941 assert(this_klass->static_field_size() == info.static_field_size, "sanity"); |
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3942 assert(this_klass->nonstatic_oop_map_count() == info.total_oop_map_count, |
938 | 3943 "sanity"); |
0 | 3944 |
3945 // Fill in information already parsed | |
975 | 3946 this_klass->set_should_verify_class(verify); |
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3947 jint lh = Klass::instance_layout_helper(info.instance_size, false); |
0 | 3948 this_klass->set_layout_helper(lh); |
3949 assert(this_klass->oop_is_instance(), "layout is correct"); | |
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3950 assert(this_klass->size_helper() == info.instance_size, "correct size_helper"); |
0 | 3951 // Not yet: supers are done below to support the new subtype-checking fields |
3952 //this_klass->set_super(super_klass()); | |
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3953 this_klass->set_class_loader_data(loader_data); |
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3954 this_klass->set_nonstatic_field_size(info.nonstatic_field_size); |
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3955 this_klass->set_has_nonstatic_fields(info.has_nonstatic_fields); |
3938 | 3956 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
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3957 |
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3958 apply_parsed_class_metadata(this_klass, java_fields_count, CHECK_NULL); |
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3959 |
0 | 3960 if (has_final_method) { |
3961 this_klass->set_has_final_method(); | |
3962 } | |
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3963 this_klass->copy_method_ordering(method_ordering, CHECK_NULL); |
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3964 // The InstanceKlass::_methods_jmethod_ids cache and the |
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3965 // InstanceKlass::_methods_cached_itable_indices cache are |
977
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3966 // both managed on the assumption that the initial cache |
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3967 // size is equal to the number of methods in the class. If |
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3968 // that changes, then InstanceKlass::idnum_can_increment() |
977
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3969 // has to be changed accordingly. |
0 | 3970 this_klass->set_initial_method_idnum(methods->length()); |
3971 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
6852 | 3972 if (is_anonymous()) // I am well known to myself |
474
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3973 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
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3974 |
0 | 3975 this_klass->set_minor_version(minor_version); |
3976 this_klass->set_major_version(major_version); | |
6934 | 3977 this_klass->set_has_default_methods(has_default_methods); |
0 | 3978 |
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3979 // Set up Method*::intrinsic_id as soon as we know the names of methods. |
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3980 // (We used to do this lazily, but now we query it in Rewriter, |
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3981 // which is eagerly done for every method, so we might as well do it now, |
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3982 // when everything is fresh in memory.) |
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3983 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
856
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3984 for (int j = 0; j < methods->length(); j++) { |
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3985 methods->at(j)->init_intrinsic_id(); |
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3986 } |
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|
3987 } |
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3988 |
0 | 3989 if (cached_class_file_bytes != NULL) { |
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3990 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
0 | 3991 this_klass->set_cached_class_file(cached_class_file_bytes, |
3992 cached_class_file_length); | |
3993 } | |
3994 | |
6934 | 3995 // Fill in field values obtained by parse_classfile_attributes |
3996 if (parsed_annotations.has_any_annotations()) | |
3997 parsed_annotations.apply_to(this_klass); | |
3998 apply_parsed_class_attributes(this_klass); | |
3999 | |
0 | 4000 // Miranda methods |
4001 if ((num_miranda_methods > 0) || | |
4002 // if this class introduced new miranda methods or | |
4003 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
4004 // super class exists and this class inherited miranda methods | |
4005 ) { | |
4006 this_klass->set_has_miranda_methods(); // then set a flag | |
4007 } | |
4008 | |
4009 // Fill in information needed to compute superclasses. | |
4010 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
4011 | |
4012 // Initialize itable offset tables | |
4013 klassItable::setup_itable_offset_table(this_klass); | |
4014 | |
6934 | 4015 // Compute transitive closure of interfaces this class implements |
0 | 4016 // Do final class setup |
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4017 fill_oop_maps(this_klass, info.nonstatic_oop_map_count, info.nonstatic_oop_offsets, info.nonstatic_oop_counts); |
0 | 4018 |
6222
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4019 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
0 | 4020 set_precomputed_flags(this_klass); |
4021 | |
4022 // reinitialize modifiers, using the InnerClasses attribute | |
4023 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
4024 this_klass->set_modifier_flags(computed_modifiers); | |
4025 | |
4026 // check if this class can access its super class | |
4027 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
4028 | |
4029 // check if this class can access its superinterfaces | |
4030 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
4031 | |
4032 // check if this class overrides any final method | |
4033 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
4034 | |
4035 // check that if this class is an interface then it doesn't have static methods | |
4036 if (this_klass->is_interface()) { | |
7579
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4037 /* An interface in a JAVA 8 classfile can be static */ |
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4038 if (_major_version < JAVA_8_VERSION) { |
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4039 check_illegal_static_method(this_klass, CHECK_(nullHandle)); |
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4040 } |
0 | 4041 } |
4042 | |
6934 | 4043 |
4044 #ifdef ASSERT | |
4045 if (ParseAllGenericSignatures) { | |
4046 parseAndPrintGenericSignatures(this_klass, CHECK_(nullHandle)); | |
4047 } | |
4048 #endif | |
4049 | |
4050 // Generate any default methods - default methods are interface methods | |
4051 // that have a default implementation. This is new with Lambda project. | |
4052 if (has_default_methods && !access_flags.is_interface() && | |
4053 local_interfaces->length() > 0) { | |
4054 DefaultMethods::generate_default_methods( | |
4055 this_klass(), &all_mirandas, CHECK_(nullHandle)); | |
4056 } | |
4057 | |
2376
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|
4058 // Allocate mirror and initialize static fields |
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|
4059 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
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4060 |
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4061 // Allocate a simple java object for locking during class initialization. |
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4062 // This needs to be a java object because it can be held across a java call. |
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4063 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL); |
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4064 this_klass->set_init_lock(r); |
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4065 |
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4066 // TODO: Move these oops to the mirror |
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|
4067 this_klass->set_protection_domain(protection_domain()); |
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4068 |
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|
4069 // Update the loader_data graph. |
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4070 record_defined_class_dependencies(this_klass, CHECK_NULL); |
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4071 |
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|
4072 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
0 | 4073 false /* not shared class */); |
4074 | |
4075 if (TraceClassLoading) { | |
6934 | 4076 ResourceMark rm; |
0 | 4077 // print in a single call to reduce interleaving of output |
4078 if (cfs->source() != NULL) { | |
4079 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
4080 cfs->source()); | |
4081 } else if (class_loader.is_null()) { | |
4082 if (THREAD->is_Java_thread()) { | |
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|
4083 Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
0 | 4084 tty->print("[Loaded %s by instance of %s]\n", |
4085 this_klass->external_name(), | |
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|
4086 InstanceKlass::cast(caller)->external_name()); |
0 | 4087 } else { |
4088 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
4089 } | |
4090 } else { | |
4091 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
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4092 InstanceKlass::cast(class_loader->klass())->external_name()); |
0 | 4093 } |
4094 } | |
4095 | |
4096 if (TraceClassResolution) { | |
6934 | 4097 ResourceMark rm; |
0 | 4098 // print out the superclass. |
6983 | 4099 const char * from = this_klass()->external_name(); |
0 | 4100 if (this_klass->java_super() != NULL) { |
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4101 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 4102 } |
4103 // print out each of the interface classes referred to by this class. | |
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4104 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
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4105 if (local_interfaces != NULL) { |
0 | 4106 int length = local_interfaces->length(); |
4107 for (int i = 0; i < length; i++) { | |
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4108 Klass* k = local_interfaces->at(i); |
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4109 InstanceKlass* to_class = InstanceKlass::cast(k); |
0 | 4110 const char * to = to_class->external_name(); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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|
4111 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 4112 } |
4113 } | |
4114 } | |
4115 | |
4116 // preserve result across HandleMark | |
4117 preserve_this_klass = this_klass(); | |
4118 } | |
4119 | |
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4120 // Create new handle outside HandleMark (might be needed for |
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4121 // Extended Class Redefinition) |
0 | 4122 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
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4123 debug_only(this_klass->verify();) |
0 | 4124 |
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4125 // Clear class if no error has occurred so destructor doesn't deallocate it |
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4126 _klass = NULL; |
0 | 4127 return this_klass; |
4128 } | |
4129 | |
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4130 // Destructor to clean up if there's an error |
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4131 ClassFileParser::~ClassFileParser() { |
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4132 MetadataFactory::free_metadata(_loader_data, _cp); |
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4133 MetadataFactory::free_array<u2>(_loader_data, _fields); |
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4134 |
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4135 // Free methods |
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|
4136 InstanceKlass::deallocate_methods(_loader_data, _methods); |
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|
4137 |
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|
4138 // beware of the Universe::empty_blah_array!! |
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|
4139 if (_inner_classes != Universe::the_empty_short_array()) { |
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|
4140 MetadataFactory::free_array<u2>(_loader_data, _inner_classes); |
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|
4141 } |
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|
4142 |
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|
4143 // Free interfaces |
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|
4144 InstanceKlass::deallocate_interfaces(_loader_data, _super_klass(), |
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|
4145 _local_interfaces, _transitive_interfaces); |
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|
4146 |
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|
4147 MetadataFactory::free_array<u1>(_loader_data, _annotations); |
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|
4148 MetadataFactory::free_array<u1>(_loader_data, _type_annotations); |
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|
4149 Annotations::free_contents(_loader_data, _fields_annotations); |
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|
4150 Annotations::free_contents(_loader_data, _fields_type_annotations); |
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|
4151 |
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|
4152 clear_class_metadata(); |
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4153 |
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4154 // deallocate the klass if already created. |
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4155 MetadataFactory::free_metadata(_loader_data, _klass); |
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4156 _klass = NULL; |
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4157 } |
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4158 |
7587 | 4159 void ClassFileParser::print_field_layout(Symbol* name, |
4160 Array<u2>* fields, | |
4161 constantPoolHandle cp, | |
4162 int instance_size, | |
4163 int instance_fields_start, | |
4164 int instance_fields_end, | |
4165 int static_fields_end) { | |
4166 tty->print("%s: field layout\n", name->as_klass_external_name()); | |
4167 tty->print(" @%3d %s\n", instance_fields_start, "--- instance fields start ---"); | |
4168 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4169 if (!fs.access_flags().is_static()) { | |
4170 tty->print(" @%3d \"%s\" %s\n", | |
4171 fs.offset(), | |
4172 fs.name()->as_klass_external_name(), | |
4173 fs.signature()->as_klass_external_name()); | |
4174 } | |
4175 } | |
4176 tty->print(" @%3d %s\n", instance_fields_end, "--- instance fields end ---"); | |
4177 tty->print(" @%3d %s\n", instance_size * wordSize, "--- instance ends ---"); | |
4178 tty->print(" @%3d %s\n", InstanceMirrorKlass::offset_of_static_fields(), "--- static fields start ---"); | |
4179 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4180 if (fs.access_flags().is_static()) { | |
4181 tty->print(" @%3d \"%s\" %s\n", | |
4182 fs.offset(), | |
4183 fs.name()->as_klass_external_name(), | |
4184 fs.signature()->as_klass_external_name()); | |
4185 } | |
4186 } | |
4187 tty->print(" @%3d %s\n", static_fields_end, "--- static fields end ---"); | |
4188 tty->print("\n"); | |
4189 } | |
4190 | |
939
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4191 unsigned int |
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4192 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
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4193 unsigned int nonstatic_oop_map_count, |
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4194 int first_nonstatic_oop_offset) { |
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4195 unsigned int map_count = |
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4196 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 4197 if (nonstatic_oop_map_count > 0) { |
4198 // We have oops to add to map | |
938 | 4199 if (map_count == 0) { |
4200 map_count = nonstatic_oop_map_count; | |
0 | 4201 } else { |
938 | 4202 // Check whether we should add a new map block or whether the last one can |
4203 // be extended | |
4204 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
4205 OopMapBlock* const last_map = first_map + map_count - 1; | |
4206 | |
4207 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 4208 if (next_offset == first_nonstatic_oop_offset) { |
4209 // There is no gap bettwen superklass's last oop field and first | |
4210 // local oop field, merge maps. | |
4211 nonstatic_oop_map_count -= 1; | |
4212 } else { | |
4213 // Superklass didn't end with a oop field, add extra maps | |
938 | 4214 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 4215 } |
938 | 4216 map_count += nonstatic_oop_map_count; |
0 | 4217 } |
4218 } | |
938 | 4219 return map_count; |
0 | 4220 } |
4221 | |
4222 | |
4223 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
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4224 unsigned int nonstatic_oop_map_count, |
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4225 int* nonstatic_oop_offsets, |
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4226 unsigned int* nonstatic_oop_counts) { |
0 | 4227 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
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4228 const InstanceKlass* const super = k->superklass(); |
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4229 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 4230 if (super_count > 0) { |
4231 // Copy maps from superklass | |
0 | 4232 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
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4233 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 4234 *this_oop_map++ = *super_oop_map++; |
4235 } | |
4236 } | |
938 | 4237 |
0 | 4238 if (nonstatic_oop_map_count > 0) { |
938 | 4239 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
4240 // The counts differ because there is no gap between superklass's last oop | |
4241 // field and the first local oop field. Extend the last oop map copied | |
0 | 4242 // from the superklass instead of creating new one. |
4243 nonstatic_oop_map_count--; | |
4244 nonstatic_oop_offsets++; | |
4245 this_oop_map--; | |
938 | 4246 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 4247 this_oop_map++; |
4248 } | |
938 | 4249 |
0 | 4250 // Add new map blocks, fill them |
4251 while (nonstatic_oop_map_count-- > 0) { | |
4252 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 4253 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 4254 this_oop_map++; |
4255 } | |
938 | 4256 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
4257 this_oop_map, "sanity"); | |
0 | 4258 } |
4259 } | |
4260 | |
4261 | |
4262 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
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4263 Klass* super = k->super(); |
0 | 4264 |
4265 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
4266 // in which case we don't have to register objects as finalizable | |
4267 if (!_has_empty_finalizer) { | |
4268 if (_has_finalizer || | |
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4269 (super != NULL && super->has_finalizer())) { |
0 | 4270 k->set_has_finalizer(); |
4271 } | |
4272 } | |
4273 | |
4274 #ifdef ASSERT | |
4275 bool f = false; | |
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4276 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
0 | 4277 vmSymbols::void_method_signature()); |
4278 if (m != NULL && !m->is_empty_method()) { | |
4279 f = true; | |
4280 } | |
4281 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
4282 #endif | |
4283 | |
4284 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 4285 if (SystemDictionary::Cloneable_klass_loaded()) { |
4286 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 4287 k->set_is_cloneable(); |
4288 } | |
4289 } | |
4290 | |
4291 // Check if this klass has a vanilla default constructor | |
4292 if (super == NULL) { | |
4293 // java.lang.Object has empty default constructor | |
4294 k->set_has_vanilla_constructor(); | |
4295 } else { | |
6983 | 4296 if (super->has_vanilla_constructor() && |
0 | 4297 _has_vanilla_constructor) { |
4298 k->set_has_vanilla_constructor(); | |
4299 } | |
4300 #ifdef ASSERT | |
4301 bool v = false; | |
6983 | 4302 if (super->has_vanilla_constructor()) { |
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4303 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
0 | 4304 ), vmSymbols::void_method_signature()); |
4305 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
4306 v = true; | |
4307 } | |
4308 } | |
4309 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
4310 #endif | |
4311 } | |
4312 | |
4313 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
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4314 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
0 | 4315 assert(k->size_helper() > 0, "layout_helper is initialized"); |
4316 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
4317 || k->is_abstract() || k->is_interface() | |
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4318 || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
0 | 4319 || k->size_helper() >= FastAllocateSizeLimit) { |
4320 // Forbid fast-path allocation. | |
4321 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
4322 k->set_layout_helper(lh); | |
4323 } | |
4324 } | |
4325 | |
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4326 // Attach super classes and interface classes to class loader data |
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4327 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
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4328 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
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4329 if (defining_loader_data->is_the_null_class_loader_data()) { |
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4330 // Dependencies to null class loader data are implicit. |
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4331 return; |
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4332 } else { |
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4333 // add super class dependency |
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4334 Klass* super = defined_klass->super(); |
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4335 if (super != NULL) { |
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4336 defining_loader_data->record_dependency(super, CHECK); |
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4337 } |
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4338 |
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4339 // add super interface dependencies |
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4340 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
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4341 if (local_interfaces != NULL) { |
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4342 int length = local_interfaces->length(); |
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4343 for (int i = 0; i < length; i++) { |
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4344 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
0 | 4345 } |
4346 } | |
4347 } | |
4348 } | |
4349 | |
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4350 // utility methods for appending an array with check for duplicates |
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4351 |
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4352 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
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4353 // iterate over new interfaces |
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4354 for (int i = 0; i < ifs->length(); i++) { |
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4355 Klass* e = ifs->at(i); |
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4356 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
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4357 // add new interface |
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4358 result->append_if_missing(e); |
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4359 } |
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4360 } |
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4361 |
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4362 Array<Klass*>* ClassFileParser::compute_transitive_interfaces( |
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4363 instanceKlassHandle super, |
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4364 Array<Klass*>* local_ifs, TRAPS) { |
0 | 4365 // Compute maximum size for transitive interfaces |
4366 int max_transitive_size = 0; | |
4367 int super_size = 0; | |
4368 // Add superclass transitive interfaces size | |
4369 if (super.not_null()) { | |
4370 super_size = super->transitive_interfaces()->length(); | |
4371 max_transitive_size += super_size; | |
4372 } | |
4373 // Add local interfaces' super interfaces | |
4374 int local_size = local_ifs->length(); | |
4375 for (int i = 0; i < local_size; i++) { | |
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4376 Klass* l = local_ifs->at(i); |
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4377 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
0 | 4378 } |
4379 // Finally add local interfaces | |
4380 max_transitive_size += local_size; | |
4381 // Construct array | |
4382 if (max_transitive_size == 0) { | |
4383 // no interfaces, use canonicalized array | |
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4384 return Universe::the_empty_klass_array(); |
0 | 4385 } else if (max_transitive_size == super_size) { |
4386 // no new local interfaces added, share superklass' transitive interface array | |
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4387 return super->transitive_interfaces(); |
0 | 4388 } else if (max_transitive_size == local_size) { |
4389 // only local interfaces added, share local interface array | |
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4390 return local_ifs; |
0 | 4391 } else { |
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4392 ResourceMark rm; |
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4393 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4394 |
0 | 4395 // Copy down from superclass |
4396 if (super.not_null()) { | |
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4397 append_interfaces(result, super->transitive_interfaces()); |
0 | 4398 } |
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4399 |
0 | 4400 // Copy down from local interfaces' superinterfaces |
4401 for (int i = 0; i < local_ifs->length(); i++) { | |
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4402 Klass* l = local_ifs->at(i); |
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4403 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
0 | 4404 } |
4405 // Finally add local interfaces | |
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4406 append_interfaces(result, local_ifs); |
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4407 |
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4408 // length will be less than the max_transitive_size if duplicates were removed |
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4409 int length = result->length(); |
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4410 assert(length <= max_transitive_size, "just checking"); |
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4411 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(_loader_data, length, CHECK_NULL); |
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4412 for (int i = 0; i < length; i++) { |
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4413 Klass* e = result->at(i); |
0 | 4414 assert(e != NULL, "just checking"); |
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4415 new_result->at_put(i, e); |
0 | 4416 } |
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4417 return new_result; |
0 | 4418 } |
4419 } | |
4420 | |
4421 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
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4422 Klass* super = this_klass->super(); |
0 | 4423 if ((super != NULL) && |
6725
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4424 (!Reflection::verify_class_access(this_klass(), super, false))) { |
0 | 4425 ResourceMark rm(THREAD); |
4426 Exceptions::fthrow( | |
4427 THREAD_AND_LOCATION, | |
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4428 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4429 "class %s cannot access its superclass %s", |
4430 this_klass->external_name(), | |
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4431 InstanceKlass::cast(super)->external_name() |
0 | 4432 ); |
4433 return; | |
4434 } | |
4435 } | |
4436 | |
4437 | |
4438 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
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4439 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
0 | 4440 int lng = local_interfaces->length(); |
4441 for (int i = lng - 1; i >= 0; i--) { | |
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4442 Klass* k = local_interfaces->at(i); |
6983 | 4443 assert (k != NULL && k->is_interface(), "invalid interface"); |
6725
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4444 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
0 | 4445 ResourceMark rm(THREAD); |
4446 Exceptions::fthrow( | |
4447 THREAD_AND_LOCATION, | |
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|
4448 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4449 "class %s cannot access its superinterface %s", |
4450 this_klass->external_name(), | |
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|
4451 InstanceKlass::cast(k)->external_name() |
0 | 4452 ); |
4453 return; | |
4454 } | |
4455 } | |
4456 } | |
4457 | |
4458 | |
4459 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
6725
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4460 Array<Method*>* methods = this_klass->methods(); |
0 | 4461 int num_methods = methods->length(); |
4462 | |
4463 // go thru each method and check if it overrides a final method | |
4464 for (int index = 0; index < num_methods; index++) { | |
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4465 Method* m = methods->at(index); |
0 | 4466 |
4467 // skip private, static and <init> methods | |
4468 if ((!m->is_private()) && | |
4469 (!m->is_static()) && | |
4470 (m->name() != vmSymbols::object_initializer_name())) { | |
4471 | |
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4472 Symbol* name = m->name(); |
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4473 Symbol* signature = m->signature(); |
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4474 Klass* k = this_klass->super(); |
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4475 Method* super_m = NULL; |
0 | 4476 while (k != NULL) { |
4477 // skip supers that don't have final methods. | |
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4478 if (k->has_final_method()) { |
0 | 4479 // lookup a matching method in the super class hierarchy |
6725
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4480 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
0 | 4481 if (super_m == NULL) { |
4482 break; // didn't find any match; get out | |
4483 } | |
4484 | |
4485 if (super_m->is_final() && | |
4486 // matching method in super is final | |
6725
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4487 (Reflection::verify_field_access(this_klass(), |
0 | 4488 super_m->method_holder(), |
4489 super_m->method_holder(), | |
4490 super_m->access_flags(), false)) | |
4491 // this class can access super final method and therefore override | |
4492 ) { | |
4493 ResourceMark rm(THREAD); | |
4494 Exceptions::fthrow( | |
4495 THREAD_AND_LOCATION, | |
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|
4496 vmSymbols::java_lang_VerifyError(), |
0 | 4497 "class %s overrides final method %s.%s", |
4498 this_klass->external_name(), | |
4499 name->as_C_string(), | |
4500 signature->as_C_string() | |
4501 ); | |
4502 return; | |
4503 } | |
4504 | |
4505 // continue to look from super_m's holder's super. | |
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18fb7da42534
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6934
diff
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|
4506 k = super_m->method_holder()->super(); |
0 | 4507 continue; |
4508 } | |
4509 | |
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4510 k = k->super(); |
0 | 4511 } |
4512 } | |
4513 } | |
4514 } | |
4515 | |
4516 | |
4517 // assumes that this_klass is an interface | |
4518 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
4519 assert(this_klass->is_interface(), "not an interface"); | |
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|
4520 Array<Method*>* methods = this_klass->methods(); |
0 | 4521 int num_methods = methods->length(); |
4522 | |
4523 for (int index = 0; index < num_methods; index++) { | |
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|
4524 Method* m = methods->at(index); |
0 | 4525 // if m is static and not the init method, throw a verify error |
4526 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
4527 ResourceMark rm(THREAD); | |
4528 Exceptions::fthrow( | |
4529 THREAD_AND_LOCATION, | |
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|
4530 vmSymbols::java_lang_VerifyError(), |
0 | 4531 "Illegal static method %s in interface %s", |
4532 m->name()->as_C_string(), | |
4533 this_klass->external_name() | |
4534 ); | |
4535 return; | |
4536 } | |
4537 } | |
4538 } | |
4539 | |
4540 // utility methods for format checking | |
4541 | |
4542 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
4543 if (!_need_verify) { return; } | |
4544 | |
4545 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
4546 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4547 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4548 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
4549 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4550 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
4551 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4552 | |
4553 if ((is_abstract && is_final) || | |
4554 (is_interface && !is_abstract) || | |
4555 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
4556 (!is_interface && major_gte_15 && is_annotation)) { | |
4557 ResourceMark rm(THREAD); | |
4558 Exceptions::fthrow( | |
4559 THREAD_AND_LOCATION, | |
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|
4560 vmSymbols::java_lang_ClassFormatError(), |
0 | 4561 "Illegal class modifiers in class %s: 0x%X", |
4562 _class_name->as_C_string(), flags | |
4563 ); | |
4564 return; | |
4565 } | |
4566 } | |
4567 | |
4568 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
4569 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4570 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4571 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4572 | |
4573 return ((is_public && is_protected) || | |
4574 (is_public && is_private) || | |
4575 (is_protected && is_private)); | |
4576 } | |
4577 | |
4578 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
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2e8bdfdd3ba2
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diff
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|
4579 u2 max_version = |
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|
4580 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
2e8bdfdd3ba2
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changeset
|
4581 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 4582 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
176
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|
4583 (major <= max_version) && |
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|
4584 ((major != max_version) || |
0 | 4585 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
4586 } | |
4587 | |
4588 void ClassFileParser::verify_legal_field_modifiers( | |
4589 jint flags, bool is_interface, TRAPS) { | |
4590 if (!_need_verify) { return; } | |
4591 | |
4592 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4593 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4594 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4595 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4596 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4597 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
4598 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
4599 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4600 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4601 | |
4602 bool is_illegal = false; | |
4603 | |
4604 if (is_interface) { | |
4605 if (!is_public || !is_static || !is_final || is_private || | |
4606 is_protected || is_volatile || is_transient || | |
4607 (major_gte_15 && is_enum)) { | |
4608 is_illegal = true; | |
4609 } | |
4610 } else { // not interface | |
4611 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
4612 is_illegal = true; | |
4613 } | |
4614 } | |
4615 | |
4616 if (is_illegal) { | |
4617 ResourceMark rm(THREAD); | |
4618 Exceptions::fthrow( | |
4619 THREAD_AND_LOCATION, | |
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|
4620 vmSymbols::java_lang_ClassFormatError(), |
0 | 4621 "Illegal field modifiers in class %s: 0x%X", |
4622 _class_name->as_C_string(), flags); | |
4623 return; | |
4624 } | |
4625 } | |
4626 | |
4627 void ClassFileParser::verify_legal_method_modifiers( | |
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|
4628 jint flags, bool is_interface, Symbol* name, TRAPS) { |
0 | 4629 if (!_need_verify) { return; } |
4630 | |
4631 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4632 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4633 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4634 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4635 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
4636 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4637 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
4638 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
4639 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
7579
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changeset
|
4640 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
0 | 4641 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
6934 | 4642 const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
0 | 4643 const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
4644 | |
4645 bool is_illegal = false; | |
4646 | |
4647 if (is_interface) { | |
7579
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|
4648 if (major_gte_8) { |
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changeset
|
4649 // Class file version is JAVA_8_VERSION or later Methods of |
adc176e95bf2
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diff
changeset
|
4650 // interfaces may set any of the flags except ACC_PROTECTED, |
adc176e95bf2
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diff
changeset
|
4651 // ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED; they must |
adc176e95bf2
8005689: InterfaceAccessFlagsTest failures in Lambda-JDK tests
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diff
changeset
|
4652 // have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set. |
adc176e95bf2
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changeset
|
4653 if ((is_public == is_private) || /* Only one of private and public should be true - XNOR */ |
adc176e95bf2
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|
4654 (is_native || is_protected || is_final || is_synchronized) || |
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diff
changeset
|
4655 // If a specific method of a class or interface has its |
adc176e95bf2
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diff
changeset
|
4656 // ACC_ABSTRACT flag set, it must not have any of its |
adc176e95bf2
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diff
changeset
|
4657 // ACC_FINAL, ACC_NATIVE, ACC_PRIVATE, ACC_STATIC, |
adc176e95bf2
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diff
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|
4658 // ACC_STRICT, or ACC_SYNCHRONIZED flags set. No need to |
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diff
changeset
|
4659 // check for ACC_FINAL, ACC_NATIVE or ACC_SYNCHRONIZED as |
adc176e95bf2
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changeset
|
4660 // those flags are illegal irrespective of ACC_ABSTRACT being set or not. |
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diff
changeset
|
4661 (is_abstract && (is_private || is_static || is_strict))) { |
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diff
changeset
|
4662 is_illegal = true; |
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|
4663 } |
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diff
changeset
|
4664 } else if (major_gte_15) { |
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diff
changeset
|
4665 // Class file version in the interval [JAVA_1_5_VERSION, JAVA_8_VERSION) |
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changeset
|
4666 if (!is_public || is_static || is_final || is_synchronized || |
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diff
changeset
|
4667 is_native || !is_abstract || is_strict) { |
adc176e95bf2
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diff
changeset
|
4668 is_illegal = true; |
adc176e95bf2
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diff
changeset
|
4669 } |
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diff
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|
4670 } else { |
adc176e95bf2
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changeset
|
4671 // Class file version is pre-JAVA_1_5_VERSION |
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diff
changeset
|
4672 if (!is_public || is_static || is_final || is_native || !is_abstract) { |
adc176e95bf2
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7462
diff
changeset
|
4673 is_illegal = true; |
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|
4674 } |
0 | 4675 } |
4676 } else { // not interface | |
4677 if (is_initializer) { | |
4678 if (is_static || is_final || is_synchronized || is_native || | |
4679 is_abstract || (major_gte_15 && is_bridge)) { | |
4680 is_illegal = true; | |
4681 } | |
4682 } else { // not initializer | |
4683 if (is_abstract) { | |
4684 if ((is_final || is_native || is_private || is_static || | |
4685 (major_gte_15 && (is_synchronized || is_strict)))) { | |
4686 is_illegal = true; | |
4687 } | |
4688 } | |
4689 if (has_illegal_visibility(flags)) { | |
4690 is_illegal = true; | |
4691 } | |
4692 } | |
4693 } | |
4694 | |
4695 if (is_illegal) { | |
4696 ResourceMark rm(THREAD); | |
4697 Exceptions::fthrow( | |
4698 THREAD_AND_LOCATION, | |
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diff
changeset
|
4699 vmSymbols::java_lang_ClassFormatError(), |
0 | 4700 "Method %s in class %s has illegal modifiers: 0x%X", |
4701 name->as_C_string(), _class_name->as_C_string(), flags); | |
4702 return; | |
4703 } | |
4704 } | |
4705 | |
4706 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
4707 assert(_need_verify, "only called when _need_verify is true"); | |
4708 int i = 0; | |
4709 int count = length >> 2; | |
4710 for (int k=0; k<count; k++) { | |
4711 unsigned char b0 = buffer[i]; | |
4712 unsigned char b1 = buffer[i+1]; | |
4713 unsigned char b2 = buffer[i+2]; | |
4714 unsigned char b3 = buffer[i+3]; | |
4715 // For an unsigned char v, | |
4716 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4717 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4718 unsigned char res = b0 | b0 - 1 | | |
4719 b1 | b1 - 1 | | |
4720 b2 | b2 - 1 | | |
4721 b3 | b3 - 1; | |
4722 if (res >= 128) break; | |
4723 i += 4; | |
4724 } | |
4725 for(; i < length; i++) { | |
4726 unsigned short c; | |
4727 // no embedded zeros | |
4728 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4729 if(buffer[i] < 128) { | |
4730 continue; | |
4731 } | |
4732 if ((i + 5) < length) { // see if it's legal supplementary character | |
4733 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4734 c = UTF8::get_supplementary_character(&buffer[i]); | |
4735 i += 5; | |
4736 continue; | |
4737 } | |
4738 } | |
4739 switch (buffer[i] >> 4) { | |
4740 default: break; | |
4741 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4742 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4743 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4744 c = (buffer[i] & 0x1F) << 6; | |
4745 i++; | |
4746 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4747 c += buffer[i] & 0x3F; | |
4748 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4749 // for classes with major > 47, c must a null or a character in its shortest form | |
4750 break; | |
4751 } | |
4752 } | |
4753 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4754 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4755 c = (buffer[i] & 0xF) << 12; | |
4756 i += 2; | |
4757 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4758 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4759 if (_major_version <= 47 || c >= 0x800) { | |
4760 // for classes with major > 47, c must be in its shortest form | |
4761 break; | |
4762 } | |
4763 } | |
4764 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4765 } // end of switch | |
4766 } // end of for | |
4767 } | |
4768 | |
4769 // Checks if name is a legal class name. | |
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4770 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
0 | 4771 if (!_need_verify || _relax_verify) { return; } |
4772 | |
4773 char buf[fixed_buffer_size]; | |
4774 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4775 unsigned int length = name->utf8_length(); | |
4776 bool legal = false; | |
4777 | |
4778 if (length > 0) { | |
4779 char* p; | |
4780 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4781 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4782 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4783 } else if (_major_version < JAVA_1_5_VERSION) { | |
4784 if (bytes[0] != '<') { | |
4785 p = skip_over_field_name(bytes, true, length); | |
4786 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4787 } | |
4788 } else { | |
4789 // 4900761: relax the constraints based on JSR202 spec | |
4790 // Class names may be drawn from the entire Unicode character set. | |
4791 // Identifiers between '/' must be unqualified names. | |
4792 // The utf8 string has been verified when parsing cpool entries. | |
4793 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4794 } | |
4795 } | |
4796 if (!legal) { | |
4797 ResourceMark rm(THREAD); | |
4798 Exceptions::fthrow( | |
4799 THREAD_AND_LOCATION, | |
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4800 vmSymbols::java_lang_ClassFormatError(), |
0 | 4801 "Illegal class name \"%s\" in class file %s", bytes, |
4802 _class_name->as_C_string() | |
4803 ); | |
4804 return; | |
4805 } | |
4806 } | |
4807 | |
4808 // Checks if name is a legal field name. | |
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4809 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
0 | 4810 if (!_need_verify || _relax_verify) { return; } |
4811 | |
4812 char buf[fixed_buffer_size]; | |
4813 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4814 unsigned int length = name->utf8_length(); | |
4815 bool legal = false; | |
4816 | |
4817 if (length > 0) { | |
4818 if (_major_version < JAVA_1_5_VERSION) { | |
4819 if (bytes[0] != '<') { | |
4820 char* p = skip_over_field_name(bytes, false, length); | |
4821 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4822 } | |
4823 } else { | |
4824 // 4881221: relax the constraints based on JSR202 spec | |
4825 legal = verify_unqualified_name(bytes, length, LegalField); | |
4826 } | |
4827 } | |
4828 | |
4829 if (!legal) { | |
4830 ResourceMark rm(THREAD); | |
4831 Exceptions::fthrow( | |
4832 THREAD_AND_LOCATION, | |
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4833 vmSymbols::java_lang_ClassFormatError(), |
0 | 4834 "Illegal field name \"%s\" in class %s", bytes, |
4835 _class_name->as_C_string() | |
4836 ); | |
4837 return; | |
4838 } | |
4839 } | |
4840 | |
4841 // Checks if name is a legal method name. | |
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4842 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
0 | 4843 if (!_need_verify || _relax_verify) { return; } |
4844 | |
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4845 assert(name != NULL, "method name is null"); |
0 | 4846 char buf[fixed_buffer_size]; |
4847 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4848 unsigned int length = name->utf8_length(); | |
4849 bool legal = false; | |
4850 | |
4851 if (length > 0) { | |
4852 if (bytes[0] == '<') { | |
4853 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
4854 legal = true; | |
4855 } | |
4856 } else if (_major_version < JAVA_1_5_VERSION) { | |
4857 char* p; | |
4858 p = skip_over_field_name(bytes, false, length); | |
4859 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4860 } else { | |
4861 // 4881221: relax the constraints based on JSR202 spec | |
4862 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
4863 } | |
4864 } | |
4865 | |
4866 if (!legal) { | |
4867 ResourceMark rm(THREAD); | |
4868 Exceptions::fthrow( | |
4869 THREAD_AND_LOCATION, | |
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4870 vmSymbols::java_lang_ClassFormatError(), |
0 | 4871 "Illegal method name \"%s\" in class %s", bytes, |
4872 _class_name->as_C_string() | |
4873 ); | |
4874 return; | |
4875 } | |
4876 } | |
4877 | |
4878 | |
4879 // Checks if signature is a legal field signature. | |
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4880 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4881 if (!_need_verify) { return; } |
4882 | |
4883 char buf[fixed_buffer_size]; | |
4884 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4885 unsigned int length = signature->utf8_length(); | |
4886 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
4887 | |
4888 if (p == NULL || (p - bytes) != (int)length) { | |
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4889 throwIllegalSignature("Field", name, signature, CHECK); |
0 | 4890 } |
4891 } | |
4892 | |
4893 // Checks if signature is a legal method signature. | |
4894 // Returns number of parameters | |
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4895 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4896 if (!_need_verify) { |
4897 // make sure caller's args_size will be less than 0 even for non-static | |
4898 // method so it will be recomputed in compute_size_of_parameters(). | |
4899 return -2; | |
4900 } | |
4901 | |
4902 unsigned int args_size = 0; | |
4903 char buf[fixed_buffer_size]; | |
4904 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4905 unsigned int length = signature->utf8_length(); | |
4906 char* nextp; | |
4907 | |
4908 // The first character must be a '(' | |
4909 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
4910 length--; | |
4911 // Skip over legal field signatures | |
4912 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4913 while ((length > 0) && (nextp != NULL)) { | |
4914 args_size++; | |
4915 if (p[0] == 'J' || p[0] == 'D') { | |
4916 args_size++; | |
4917 } | |
4918 length -= nextp - p; | |
4919 p = nextp; | |
4920 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4921 } | |
4922 // The first non-signature thing better be a ')' | |
4923 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
4924 length--; | |
4925 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
4926 // All internal methods must return void | |
4927 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
4928 return args_size; | |
4929 } | |
4930 } else { | |
4931 // Now we better just have a return value | |
4932 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
4933 if (nextp && ((int)length == (nextp - p))) { | |
4934 return args_size; | |
4935 } | |
4936 } | |
4937 } | |
4938 } | |
4939 // Report error | |
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4940 throwIllegalSignature("Method", name, signature, CHECK_0); |
0 | 4941 return 0; |
4942 } | |
4943 | |
4944 | |
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4945 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
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4946 // Method names also may not contain the characters '<' or '>', unless <init> |
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4947 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
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4948 // method. Because these names have been checked as special cases before |
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4949 // calling this method in verify_legal_method_name. |
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4950 bool ClassFileParser::verify_unqualified_name( |
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4951 char* name, unsigned int length, int type) { |
0 | 4952 jchar ch; |
4953 | |
4954 for (char* p = name; p != name + length; ) { | |
4955 ch = *p; | |
4956 if (ch < 128) { | |
4957 p++; | |
1881
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4958 if (ch == '.' || ch == ';' || ch == '[' ) { |
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4959 return false; // do not permit '.', ';', or '[' |
0 | 4960 } |
4961 if (type != LegalClass && ch == '/') { | |
4962 return false; // do not permit '/' unless it's class name | |
4963 } | |
4964 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
4965 return false; // do not permit '<' or '>' in method names | |
4966 } | |
4967 } else { | |
4968 char* tmp_p = UTF8::next(p, &ch); | |
4969 p = tmp_p; | |
4970 } | |
4971 } | |
4972 return true; | |
4973 } | |
4974 | |
4975 | |
4976 // Take pointer to a string. Skip over the longest part of the string that could | |
4977 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
4978 // Return a pointer to just past the fieldname. | |
4979 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
4980 // being true, we saw consecutive slashes (meaning we were looking for a | |
4981 // qualified path but found something that was badly-formed). | |
4982 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
4983 char* p; | |
4984 jchar ch; | |
4985 jboolean last_is_slash = false; | |
4986 jboolean not_first_ch = false; | |
4987 | |
4988 for (p = name; p != name + length; not_first_ch = true) { | |
4989 char* old_p = p; | |
4990 ch = *p; | |
4991 if (ch < 128) { | |
4992 p++; | |
4993 // quick check for ascii | |
4994 if ((ch >= 'a' && ch <= 'z') || | |
4995 (ch >= 'A' && ch <= 'Z') || | |
4996 (ch == '_' || ch == '$') || | |
4997 (not_first_ch && ch >= '0' && ch <= '9')) { | |
4998 last_is_slash = false; | |
4999 continue; | |
5000 } | |
5001 if (slash_ok && ch == '/') { | |
5002 if (last_is_slash) { | |
5003 return NULL; // Don't permit consecutive slashes | |
5004 } | |
5005 last_is_slash = true; | |
5006 continue; | |
5007 } | |
5008 } else { | |
5009 jint unicode_ch; | |
5010 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
5011 p = tmp_p; | |
5012 last_is_slash = false; | |
5013 // Check if ch is Java identifier start or is Java identifier part | |
5014 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
5015 EXCEPTION_MARK; | |
1142 | 5016 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 5017 |
5018 // return value | |
5019 JavaValue result(T_BOOLEAN); | |
5020 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
5021 JavaCallArguments args; | |
5022 args.push_int(unicode_ch); | |
5023 | |
5024 // public static boolean isJavaIdentifierStart(char ch); | |
5025 JavaCalls::call_static(&result, | |
5026 klass, | |
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5027 vmSymbols::isJavaIdentifierStart_name(), |
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5028 vmSymbols::int_bool_signature(), |
0 | 5029 &args, |
5030 THREAD); | |
5031 | |
5032 if (HAS_PENDING_EXCEPTION) { | |
5033 CLEAR_PENDING_EXCEPTION; | |
5034 return 0; | |
5035 } | |
5036 if (result.get_jboolean()) { | |
5037 continue; | |
5038 } | |
5039 | |
5040 if (not_first_ch) { | |
5041 // public static boolean isJavaIdentifierPart(char ch); | |
5042 JavaCalls::call_static(&result, | |
5043 klass, | |
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5044 vmSymbols::isJavaIdentifierPart_name(), |
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5045 vmSymbols::int_bool_signature(), |
0 | 5046 &args, |
5047 THREAD); | |
5048 | |
5049 if (HAS_PENDING_EXCEPTION) { | |
5050 CLEAR_PENDING_EXCEPTION; | |
5051 return 0; | |
5052 } | |
5053 | |
5054 if (result.get_jboolean()) { | |
5055 continue; | |
5056 } | |
5057 } | |
5058 } | |
5059 return (not_first_ch) ? old_p : NULL; | |
5060 } | |
5061 return (not_first_ch) ? p : NULL; | |
5062 } | |
5063 | |
5064 | |
5065 // Take pointer to a string. Skip over the longest part of the string that could | |
5066 // be taken as a field signature. Allow "void" if void_ok. | |
5067 // Return a pointer to just past the signature. | |
5068 // Return NULL if no legal signature is found. | |
5069 char* ClassFileParser::skip_over_field_signature(char* signature, | |
5070 bool void_ok, | |
5071 unsigned int length, | |
5072 TRAPS) { | |
5073 unsigned int array_dim = 0; | |
5074 while (length > 0) { | |
5075 switch (signature[0]) { | |
5076 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
5077 case JVM_SIGNATURE_BOOLEAN: | |
5078 case JVM_SIGNATURE_BYTE: | |
5079 case JVM_SIGNATURE_CHAR: | |
5080 case JVM_SIGNATURE_SHORT: | |
5081 case JVM_SIGNATURE_INT: | |
5082 case JVM_SIGNATURE_FLOAT: | |
5083 case JVM_SIGNATURE_LONG: | |
5084 case JVM_SIGNATURE_DOUBLE: | |
5085 return signature + 1; | |
5086 case JVM_SIGNATURE_CLASS: { | |
5087 if (_major_version < JAVA_1_5_VERSION) { | |
5088 // Skip over the class name if one is there | |
5089 char* p = skip_over_field_name(signature + 1, true, --length); | |
5090 | |
5091 // The next character better be a semicolon | |
5092 if (p && (p - signature) > 1 && p[0] == ';') { | |
5093 return p + 1; | |
5094 } | |
5095 } else { | |
5096 // 4900761: For class version > 48, any unicode is allowed in class name. | |
5097 length--; | |
5098 signature++; | |
5099 while (length > 0 && signature[0] != ';') { | |
5100 if (signature[0] == '.') { | |
5101 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
5102 } | |
5103 length--; | |
5104 signature++; | |
5105 } | |
5106 if (signature[0] == ';') { return signature + 1; } | |
5107 } | |
5108 | |
5109 return NULL; | |
5110 } | |
5111 case JVM_SIGNATURE_ARRAY: | |
5112 array_dim++; | |
5113 if (array_dim > 255) { | |
5114 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
5115 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
5116 } | |
5117 // The rest of what's there better be a legal signature | |
5118 signature++; | |
5119 length--; | |
5120 void_ok = false; | |
5121 break; | |
5122 | |
5123 default: | |
5124 return NULL; | |
5125 } | |
5126 } | |
5127 return NULL; | |
5128 } |