Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/javaClasses.hpp @ 6988:2cb439954abf
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Mon, 19 Nov 2012 15:36:13 +0100 |
| parents | e522a00b91aa 80e866b1d053 |
| children | 291ffc492eb6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6057 | 2 * Copyright (c) 1997, 2012, 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 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP |
| 26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP | |
| 27 | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "jvmtifiles/jvmti.h" | |
| 30 #include "oops/oop.hpp" | |
| 31 #include "runtime/os.hpp" | |
| 32 #include "utilities/utf8.hpp" | |
| 33 | |
| 0 | 34 // Interface for manipulating the basic Java classes. |
| 35 // | |
| 36 // All dependencies on layout of actual Java classes should be kept here. | |
| 37 // If the layout of any of the classes above changes the offsets must be adjusted. | |
| 38 // | |
| 39 // For most classes we hardwire the offsets for performance reasons. In certain | |
| 40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
| 41 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
| 42 // | |
| 43 // Note that fields (static and non-static) are arranged with oops before non-oops | |
| 44 // on a per class basis. The offsets below have to reflect this ordering. | |
| 45 // | |
| 46 // When editing the layouts please update the check_offset verification code | |
| 47 // correspondingly. The names in the enums must be identical to the actual field | |
| 48 // names in order for the verification code to work. | |
| 49 | |
| 50 | |
| 51 // Interface to java.lang.String objects | |
| 52 | |
| 53 class java_lang_String : AllStatic { | |
| 54 private: | |
| 55 static int value_offset; | |
| 56 static int offset_offset; | |
| 57 static int count_offset; | |
| 58 static int hash_offset; | |
| 59 | |
| 6057 | 60 static bool initialized; |
| 61 | |
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62 static Handle basic_create(int length, TRAPS); |
| 0 | 63 |
| 6057 | 64 static void set_value( oop string, typeArrayOop buffer) { |
| 65 assert(initialized, "Must be initialized"); | |
| 66 string->obj_field_put(value_offset, (oop)buffer); | |
| 67 } | |
| 68 static void set_offset(oop string, int offset) { | |
| 69 assert(initialized, "Must be initialized"); | |
| 70 if (offset_offset > 0) { | |
| 71 string->int_field_put(offset_offset, offset); | |
| 72 } | |
| 73 } | |
| 74 static void set_count( oop string, int count) { | |
| 75 assert(initialized, "Must be initialized"); | |
| 76 if (count_offset > 0) { | |
| 77 string->int_field_put(count_offset, count); | |
| 78 } | |
| 79 } | |
| 0 | 80 |
| 81 public: | |
| 6057 | 82 static void compute_offsets(); |
| 83 | |
| 0 | 84 // Instance creation |
| 85 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
| 86 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
| 87 static Handle create_from_str(const char* utf8_str, TRAPS); | |
| 88 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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89 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
| 0 | 90 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
| 91 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
| 92 | |
| 6057 | 93 static bool has_offset_field() { |
| 94 assert(initialized, "Must be initialized"); | |
| 95 return (offset_offset > 0); | |
| 96 } | |
| 97 | |
| 98 static bool has_count_field() { | |
| 99 assert(initialized, "Must be initialized"); | |
| 100 return (count_offset > 0); | |
| 101 } | |
| 102 | |
| 103 static bool has_hash_field() { | |
| 104 assert(initialized, "Must be initialized"); | |
| 105 return (hash_offset > 0); | |
| 106 } | |
| 107 | |
| 108 static int value_offset_in_bytes() { | |
| 109 assert(initialized && (value_offset > 0), "Must be initialized"); | |
| 110 return value_offset; | |
| 111 } | |
| 112 static int count_offset_in_bytes() { | |
| 113 assert(initialized && (count_offset > 0), "Must be initialized"); | |
| 114 return count_offset; | |
| 115 } | |
| 116 static int offset_offset_in_bytes() { | |
| 117 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
| 118 return offset_offset; | |
| 119 } | |
| 120 static int hash_offset_in_bytes() { | |
| 121 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
| 122 return hash_offset; | |
| 123 } | |
| 0 | 124 |
| 125 // Accessors | |
| 126 static typeArrayOop value(oop java_string) { | |
| 6057 | 127 assert(initialized && (value_offset > 0), "Must be initialized"); |
| 0 | 128 assert(is_instance(java_string), "must be java_string"); |
| 129 return (typeArrayOop) java_string->obj_field(value_offset); | |
| 130 } | |
| 131 static int offset(oop java_string) { | |
| 6057 | 132 assert(initialized, "Must be initialized"); |
| 0 | 133 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 134 if (offset_offset > 0) { |
| 135 return java_string->int_field(offset_offset); | |
| 136 } else { | |
| 137 return 0; | |
| 138 } | |
| 0 | 139 } |
| 140 static int length(oop java_string) { | |
| 6057 | 141 assert(initialized, "Must be initialized"); |
| 0 | 142 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 143 if (count_offset > 0) { |
| 144 return java_string->int_field(count_offset); | |
| 145 } else { | |
| 146 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
| 147 } | |
| 0 | 148 } |
| 149 static int utf8_length(oop java_string); | |
| 150 | |
| 151 // String converters | |
| 152 static char* as_utf8_string(oop java_string); | |
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153 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
| 0 | 154 static char* as_utf8_string(oop java_string, int start, int len); |
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155 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
| 0 | 156 static jchar* as_unicode_string(oop java_string, int& length); |
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157 // produce an ascii string with all other values quoted using \u#### |
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158 static char* as_quoted_ascii(oop java_string); |
| 0 | 159 |
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160 // Compute the hash value for a java.lang.String object which would |
| 6162 | 161 // contain the characters passed in. |
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162 // |
| 6162 | 163 // As the hash value used by the String object itself, in |
| 164 // String.hashCode(). This value is normally calculated in Java code | |
| 165 // in the String.hashCode method(), but is precomputed for String | |
| 166 // objects in the shared archive file. | |
| 167 // hash P(31) from Kernighan & Ritchie | |
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168 // |
| 6162 | 169 // For this reason, THIS ALGORITHM MUST MATCH String.toHash(). |
| 170 template <typename T> static unsigned int to_hash(T* s, int len) { | |
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171 unsigned int h = 0; |
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172 while (len-- > 0) { |
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173 h = 31*h + (unsigned int) *s; |
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174 s++; |
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175 } |
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176 return h; |
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177 } |
| 6162 | 178 static unsigned int to_hash(oop java_string); |
| 179 | |
| 180 // This is the string hash code used by the StringTable, which may be | |
| 181 // the same as String.toHash or an alternate hash code. | |
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182 static unsigned int hash_string(oop java_string); |
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183 |
| 0 | 184 static bool equals(oop java_string, jchar* chars, int len); |
| 185 | |
| 186 // Conversion between '.' and '/' formats | |
| 187 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
| 188 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
| 189 | |
| 190 // Conversion | |
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191 static Symbol* as_symbol(Handle java_string, TRAPS); |
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192 static Symbol* as_symbol_or_null(oop java_string); |
| 0 | 193 |
| 194 // Testers | |
| 195 static bool is_instance(oop obj) { | |
| 1142 | 196 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
| 0 | 197 } |
| 198 | |
| 199 // Debugging | |
| 200 static void print(Handle java_string, outputStream* st); | |
| 201 friend class JavaClasses; | |
| 202 }; | |
| 203 | |
| 204 | |
| 205 // Interface to java.lang.Class objects | |
| 206 | |
| 3938 | 207 #define CLASS_INJECTED_FIELDS(macro) \ |
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208 macro(java_lang_Class, klass, intptr_signature, false) \ |
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209 GRAAL_ONLY(macro(java_lang_Class, graal_mirror, object_signature, false))\ |
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210 macro(java_lang_Class, resolved_constructor, intptr_signature, false) \ |
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211 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
| 3938 | 212 macro(java_lang_Class, oop_size, int_signature, false) \ |
| 213 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
| 214 | |
| 0 | 215 class java_lang_Class : AllStatic { |
| 3938 | 216 friend class VMStructs; |
| 217 | |
| 0 | 218 private: |
| 219 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 220 | |
| 3938 | 221 static int _klass_offset; |
| 222 static int _resolved_constructor_offset; | |
| 223 static int _array_klass_offset; | |
| 0 | 224 |
| 3938 | 225 static int _oop_size_offset; |
| 226 static int _static_oop_field_count_offset; | |
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227 #ifdef GRAAL |
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228 static int _graal_mirror_offset; |
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229 #endif |
| 0 | 230 |
| 231 static bool offsets_computed; | |
| 232 static int classRedefinedCount_offset; | |
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233 static GrowableArray<Klass*>* _fixup_mirror_list; |
| 0 | 234 |
| 235 public: | |
| 3938 | 236 static void compute_offsets(); |
| 237 | |
| 0 | 238 // Instance creation |
| 239 static oop create_mirror(KlassHandle k, TRAPS); | |
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240 static void fixup_mirror(KlassHandle k, TRAPS); |
| 0 | 241 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
| 242 // Conversion | |
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243 static Klass* as_Klass(oop java_class); |
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244 static void set_klass(oop java_class, Klass* klass); |
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245 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
| 710 | 246 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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247 Klass* refk_oop = NULL; |
| 710 | 248 BasicType result = as_BasicType(java_class, &refk_oop); |
| 249 (*reference_klass) = KlassHandle(refk_oop); | |
| 250 return result; | |
| 251 } | |
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252 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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253 static void print_signature(oop java_class, outputStream *st); |
| 0 | 254 // Testing |
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255 static bool is_instance(oop obj) { |
| 1142 | 256 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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257 } |
| 0 | 258 static bool is_primitive(oop java_class); |
| 259 static BasicType primitive_type(oop java_class); | |
| 260 static oop primitive_mirror(BasicType t); | |
| 261 // JVM_NewInstance support | |
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262 static Method* resolved_constructor(oop java_class); |
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263 static void set_resolved_constructor(oop java_class, Method* constructor); |
| 0 | 264 // JVM_NewArray support |
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265 static Klass* array_klass(oop java_class); |
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266 static void set_array_klass(oop java_class, Klass* klass); |
| 0 | 267 // compiler support for class operations |
| 3938 | 268 static int klass_offset_in_bytes() { return _klass_offset; } |
| 269 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
| 270 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
| 0 | 271 // Support for classRedefinedCount field |
| 272 static int classRedefinedCount(oop the_class_mirror); | |
| 273 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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274 |
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275 static int oop_size(oop java_class); |
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276 static void set_oop_size(oop java_class, int size); |
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277 static int static_oop_field_count(oop java_class); |
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278 static void set_static_oop_field_count(oop java_class, int size); |
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279 |
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280 #ifdef GRAAL |
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281 static oop graal_mirror(oop java_class); |
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282 static int graal_mirror_offset_in_bytes() { return _graal_mirror_offset; } |
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283 #endif |
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284 |
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285 static GrowableArray<Klass*>* fixup_mirror_list() { |
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286 return _fixup_mirror_list; |
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287 } |
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288 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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289 _fixup_mirror_list = v; |
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290 } |
| 0 | 291 // Debugging |
| 292 friend class JavaClasses; | |
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293 friend class InstanceKlass; // verification code accesses offsets |
| 0 | 294 friend class ClassFileParser; // access to number_of_fake_fields |
| 295 }; | |
| 296 | |
| 297 // Interface to java.lang.Thread objects | |
| 298 | |
| 299 class java_lang_Thread : AllStatic { | |
| 300 private: | |
| 301 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 302 // so we compute the offsets at startup rather than hard-wiring them. | |
| 303 static int _name_offset; | |
| 304 static int _group_offset; | |
| 305 static int _contextClassLoader_offset; | |
| 306 static int _inheritedAccessControlContext_offset; | |
| 307 static int _priority_offset; | |
| 308 static int _eetop_offset; | |
| 309 static int _daemon_offset; | |
| 310 static int _stillborn_offset; | |
| 311 static int _stackSize_offset; | |
| 312 static int _tid_offset; | |
| 313 static int _thread_status_offset; | |
| 314 static int _park_blocker_offset; | |
| 315 static int _park_event_offset ; | |
| 316 | |
| 317 static void compute_offsets(); | |
| 318 | |
| 319 public: | |
| 320 // Instance creation | |
| 321 static oop create(); | |
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322 static int java_thread_offset_in_bytes() { return _eetop_offset; } |
| 0 | 323 // Returns the JavaThread associated with the thread obj |
| 324 static JavaThread* thread(oop java_thread); | |
| 325 // Set JavaThread for instance | |
| 326 static void set_thread(oop java_thread, JavaThread* thread); | |
| 327 // Name | |
| 328 static typeArrayOop name(oop java_thread); | |
| 329 static void set_name(oop java_thread, typeArrayOop name); | |
| 330 // Priority | |
| 331 static ThreadPriority priority(oop java_thread); | |
| 332 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 333 // Thread group | |
| 334 static oop threadGroup(oop java_thread); | |
| 335 // Stillborn | |
| 336 static bool is_stillborn(oop java_thread); | |
| 337 static void set_stillborn(oop java_thread); | |
| 338 // Alive (NOTE: this is not really a field, but provides the correct | |
| 339 // definition without doing a Java call) | |
| 340 static bool is_alive(oop java_thread); | |
| 341 // Daemon | |
| 342 static bool is_daemon(oop java_thread); | |
| 343 static void set_daemon(oop java_thread); | |
| 344 // Context ClassLoader | |
| 345 static oop context_class_loader(oop java_thread); | |
| 346 // Control context | |
| 347 static oop inherited_access_control_context(oop java_thread); | |
| 348 // Stack size hint | |
| 349 static jlong stackSize(oop java_thread); | |
| 350 // Thread ID | |
| 351 static jlong thread_id(oop java_thread); | |
| 352 | |
| 353 // Blocker object responsible for thread parking | |
| 354 static oop park_blocker(oop java_thread); | |
| 355 | |
| 356 // Pointer to type-stable park handler, encoded as jlong. | |
| 357 // Should be set when apparently null | |
| 358 // For details, see unsafe.cpp Unsafe_Unpark | |
| 359 static jlong park_event(oop java_thread); | |
| 360 static bool set_park_event(oop java_thread, jlong ptr); | |
| 361 | |
| 362 // Java Thread Status for JVMTI and M&M use. | |
| 363 // This thread status info is saved in threadStatus field of | |
| 364 // java.lang.Thread java class. | |
| 365 enum ThreadStatus { | |
| 366 NEW = 0, | |
| 367 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 368 JVMTI_THREAD_STATE_RUNNABLE, | |
| 369 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 370 JVMTI_THREAD_STATE_WAITING + | |
| 371 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 372 JVMTI_THREAD_STATE_SLEEPING, | |
| 373 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 374 JVMTI_THREAD_STATE_WAITING + | |
| 375 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 376 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 377 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 378 JVMTI_THREAD_STATE_WAITING + | |
| 379 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 380 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 381 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 382 JVMTI_THREAD_STATE_WAITING + | |
| 383 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 384 JVMTI_THREAD_STATE_PARKED, | |
| 385 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 386 JVMTI_THREAD_STATE_WAITING + | |
| 387 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 388 JVMTI_THREAD_STATE_PARKED, | |
| 389 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 390 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 391 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 392 }; | |
| 393 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 394 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 395 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 396 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 397 | |
| 398 static const char* thread_status_name(oop java_thread_oop); | |
| 399 | |
| 400 // Debugging | |
| 401 friend class JavaClasses; | |
| 402 }; | |
| 403 | |
| 404 // Interface to java.lang.ThreadGroup objects | |
| 405 | |
| 406 class java_lang_ThreadGroup : AllStatic { | |
| 407 private: | |
| 408 static int _parent_offset; | |
| 409 static int _name_offset; | |
| 410 static int _threads_offset; | |
| 411 static int _groups_offset; | |
| 412 static int _maxPriority_offset; | |
| 413 static int _destroyed_offset; | |
| 414 static int _daemon_offset; | |
| 415 static int _vmAllowSuspension_offset; | |
| 416 static int _nthreads_offset; | |
| 417 static int _ngroups_offset; | |
| 418 | |
| 419 static void compute_offsets(); | |
| 420 | |
| 421 public: | |
| 422 // parent ThreadGroup | |
| 423 static oop parent(oop java_thread_group); | |
| 424 // name | |
| 425 static typeArrayOop name(oop java_thread_group); | |
| 426 // ("name as oop" accessor is not necessary) | |
| 427 // Number of threads in group | |
| 428 static int nthreads(oop java_thread_group); | |
| 429 // threads | |
| 430 static objArrayOop threads(oop java_thread_group); | |
| 431 // Number of threads in group | |
| 432 static int ngroups(oop java_thread_group); | |
| 433 // groups | |
| 434 static objArrayOop groups(oop java_thread_group); | |
| 435 // maxPriority in group | |
| 436 static ThreadPriority maxPriority(oop java_thread_group); | |
| 437 // Destroyed | |
| 438 static bool is_destroyed(oop java_thread_group); | |
| 439 // Daemon | |
| 440 static bool is_daemon(oop java_thread_group); | |
| 441 // vmAllowSuspension | |
| 442 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 443 // Debugging | |
| 444 friend class JavaClasses; | |
| 445 }; | |
| 446 | |
| 447 | |
| 448 | |
| 449 // Interface to java.lang.Throwable objects | |
| 450 | |
| 451 class java_lang_Throwable: AllStatic { | |
| 452 friend class BacktraceBuilder; | |
| 453 | |
| 454 private: | |
| 455 // Offsets | |
| 456 enum { | |
| 457 hc_backtrace_offset = 0, | |
| 458 hc_detailMessage_offset = 1, | |
| 459 hc_cause_offset = 2, // New since 1.4 | |
| 460 hc_stackTrace_offset = 3 // New since 1.4 | |
| 461 }; | |
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462 enum { |
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463 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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464 }; |
| 0 | 465 // Trace constants |
| 466 enum { | |
| 467 trace_methods_offset = 0, | |
| 468 trace_bcis_offset = 1, | |
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469 trace_mirrors_offset = 2, |
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470 trace_next_offset = 3, |
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471 trace_size = 4, |
| 0 | 472 trace_chunk_size = 32 |
| 473 }; | |
| 474 | |
| 475 static int backtrace_offset; | |
| 476 static int detailMessage_offset; | |
| 477 static int cause_offset; | |
| 478 static int stackTrace_offset; | |
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479 static int static_unassigned_stacktrace_offset; |
| 0 | 480 |
| 481 // Printing | |
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482 static char* print_stack_element_to_buffer(Method* method, int bci); |
| 0 | 483 static void print_to_stream(Handle stream, const char* str); |
| 484 // StackTrace (programmatic access, new since 1.4) | |
| 485 static void clear_stacktrace(oop throwable); | |
| 486 // No stack trace available | |
| 487 static const char* no_stack_trace_message(); | |
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488 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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489 static void set_stacktrace(oop throwable, oop st_element_array); |
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490 static oop unassigned_stacktrace(); |
| 0 | 491 |
| 492 public: | |
| 493 // Backtrace | |
| 494 static oop backtrace(oop throwable); | |
| 495 static void set_backtrace(oop throwable, oop value); | |
| 496 // Needed by JVMTI to filter out this internal field. | |
| 497 static int get_backtrace_offset() { return backtrace_offset;} | |
| 498 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 499 // Message | |
| 500 static oop message(oop throwable); | |
| 501 static oop message(Handle throwable); | |
| 502 static void set_message(oop throwable, oop value); | |
| 503 // Print stack trace stored in exception by call-back to Java | |
| 504 // Note: this is no longer used in Merlin, but we still suppport | |
| 505 // it for compatibility. | |
| 506 static void print_stack_trace(oop throwable, oop print_stream); | |
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507 static void print_stack_element(Handle stream, Method* method, int bci); |
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508 static void print_stack_element(outputStream *st, Method* method, int bci); |
| 0 | 509 static void print_stack_usage(Handle stream); |
| 510 | |
| 511 // Allocate space for backtrace (created but stack trace not filled in) | |
| 512 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 513 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 514 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 515 // Fill in current stack trace, can cause GC | |
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516 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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517 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 518 // Programmatic access to stack trace |
| 519 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 520 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 521 // Printing | |
| 522 static void print(oop throwable, outputStream* st); | |
| 523 static void print(Handle throwable, outputStream* st); | |
| 524 static void print_stack_trace(oop throwable, outputStream* st); | |
| 525 // Debugging | |
| 526 friend class JavaClasses; | |
| 527 }; | |
| 528 | |
| 529 | |
| 530 // Interface to java.lang.reflect.AccessibleObject objects | |
| 531 | |
| 532 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 533 private: | |
| 534 // Note that to reduce dependencies on the JDK we compute these | |
| 535 // offsets at run-time. | |
| 536 static int override_offset; | |
| 537 | |
| 538 static void compute_offsets(); | |
| 539 | |
| 540 public: | |
| 541 // Accessors | |
| 542 static jboolean override(oop reflect); | |
| 543 static void set_override(oop reflect, jboolean value); | |
| 544 | |
| 545 // Debugging | |
| 546 friend class JavaClasses; | |
| 547 }; | |
| 548 | |
| 549 | |
| 550 // Interface to java.lang.reflect.Method objects | |
| 551 | |
| 552 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 553 private: | |
| 554 // Note that to reduce dependencies on the JDK we compute these | |
| 555 // offsets at run-time. | |
| 556 static int clazz_offset; | |
| 557 static int name_offset; | |
| 558 static int returnType_offset; | |
| 559 static int parameterTypes_offset; | |
| 560 static int exceptionTypes_offset; | |
| 561 static int slot_offset; | |
| 562 static int modifiers_offset; | |
| 563 static int signature_offset; | |
| 564 static int annotations_offset; | |
| 565 static int parameter_annotations_offset; | |
| 566 static int annotation_default_offset; | |
| 567 | |
| 568 static void compute_offsets(); | |
| 569 | |
| 570 public: | |
| 571 // Allocation | |
| 572 static Handle create(TRAPS); | |
| 573 | |
| 574 // Accessors | |
| 575 static oop clazz(oop reflect); | |
| 576 static void set_clazz(oop reflect, oop value); | |
| 577 | |
| 578 static oop name(oop method); | |
| 579 static void set_name(oop method, oop value); | |
| 580 | |
| 581 static oop return_type(oop method); | |
| 582 static void set_return_type(oop method, oop value); | |
| 583 | |
| 584 static oop parameter_types(oop method); | |
| 585 static void set_parameter_types(oop method, oop value); | |
| 586 | |
| 587 static oop exception_types(oop method); | |
| 588 static void set_exception_types(oop method, oop value); | |
| 589 | |
| 590 static int slot(oop reflect); | |
| 591 static void set_slot(oop reflect, int value); | |
| 592 | |
| 593 static int modifiers(oop method); | |
| 594 static void set_modifiers(oop method, int value); | |
| 595 | |
| 596 static bool has_signature_field(); | |
| 597 static oop signature(oop method); | |
| 598 static void set_signature(oop method, oop value); | |
| 599 | |
| 600 static bool has_annotations_field(); | |
| 601 static oop annotations(oop method); | |
| 602 static void set_annotations(oop method, oop value); | |
| 603 | |
| 604 static bool has_parameter_annotations_field(); | |
| 605 static oop parameter_annotations(oop method); | |
| 606 static void set_parameter_annotations(oop method, oop value); | |
| 607 | |
| 608 static bool has_annotation_default_field(); | |
| 609 static oop annotation_default(oop method); | |
| 610 static void set_annotation_default(oop method, oop value); | |
| 611 | |
| 612 // Debugging | |
| 613 friend class JavaClasses; | |
| 614 }; | |
| 615 | |
| 616 | |
| 617 // Interface to java.lang.reflect.Constructor objects | |
| 618 | |
| 619 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 620 private: | |
| 621 // Note that to reduce dependencies on the JDK we compute these | |
| 622 // offsets at run-time. | |
| 623 static int clazz_offset; | |
| 624 static int parameterTypes_offset; | |
| 625 static int exceptionTypes_offset; | |
| 626 static int slot_offset; | |
| 627 static int modifiers_offset; | |
| 628 static int signature_offset; | |
| 629 static int annotations_offset; | |
| 630 static int parameter_annotations_offset; | |
| 631 | |
| 632 static void compute_offsets(); | |
| 633 | |
| 634 public: | |
| 635 // Allocation | |
| 636 static Handle create(TRAPS); | |
| 637 | |
| 638 // Accessors | |
| 639 static oop clazz(oop reflect); | |
| 640 static void set_clazz(oop reflect, oop value); | |
| 641 | |
| 642 static oop parameter_types(oop constructor); | |
| 643 static void set_parameter_types(oop constructor, oop value); | |
| 644 | |
| 645 static oop exception_types(oop constructor); | |
| 646 static void set_exception_types(oop constructor, oop value); | |
| 647 | |
| 648 static int slot(oop reflect); | |
| 649 static void set_slot(oop reflect, int value); | |
| 650 | |
| 651 static int modifiers(oop constructor); | |
| 652 static void set_modifiers(oop constructor, int value); | |
| 653 | |
| 654 static bool has_signature_field(); | |
| 655 static oop signature(oop constructor); | |
| 656 static void set_signature(oop constructor, oop value); | |
| 657 | |
| 658 static bool has_annotations_field(); | |
| 659 static oop annotations(oop constructor); | |
| 660 static void set_annotations(oop constructor, oop value); | |
| 661 | |
| 662 static bool has_parameter_annotations_field(); | |
| 663 static oop parameter_annotations(oop method); | |
| 664 static void set_parameter_annotations(oop method, oop value); | |
| 665 | |
| 666 // Debugging | |
| 667 friend class JavaClasses; | |
| 668 }; | |
| 669 | |
| 670 | |
| 671 // Interface to java.lang.reflect.Field objects | |
| 672 | |
| 673 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 674 private: | |
| 675 // Note that to reduce dependencies on the JDK we compute these | |
| 676 // offsets at run-time. | |
| 677 static int clazz_offset; | |
| 678 static int name_offset; | |
| 679 static int type_offset; | |
| 680 static int slot_offset; | |
| 681 static int modifiers_offset; | |
| 682 static int signature_offset; | |
| 683 static int annotations_offset; | |
| 684 | |
| 685 static void compute_offsets(); | |
| 686 | |
| 687 public: | |
| 688 // Allocation | |
| 689 static Handle create(TRAPS); | |
| 690 | |
| 691 // Accessors | |
| 692 static oop clazz(oop reflect); | |
| 693 static void set_clazz(oop reflect, oop value); | |
| 694 | |
| 695 static oop name(oop field); | |
| 696 static void set_name(oop field, oop value); | |
| 697 | |
| 698 static oop type(oop field); | |
| 699 static void set_type(oop field, oop value); | |
| 700 | |
| 701 static int slot(oop reflect); | |
| 702 static void set_slot(oop reflect, int value); | |
| 703 | |
| 704 static int modifiers(oop field); | |
| 705 static void set_modifiers(oop field, int value); | |
| 706 | |
| 707 static bool has_signature_field(); | |
| 708 static oop signature(oop constructor); | |
| 709 static void set_signature(oop constructor, oop value); | |
| 710 | |
| 711 static bool has_annotations_field(); | |
| 712 static oop annotations(oop constructor); | |
| 713 static void set_annotations(oop constructor, oop value); | |
| 714 | |
| 715 static bool has_parameter_annotations_field(); | |
| 716 static oop parameter_annotations(oop method); | |
| 717 static void set_parameter_annotations(oop method, oop value); | |
| 718 | |
| 719 static bool has_annotation_default_field(); | |
| 720 static oop annotation_default(oop method); | |
| 721 static void set_annotation_default(oop method, oop value); | |
| 722 | |
| 723 // Debugging | |
| 724 friend class JavaClasses; | |
| 725 }; | |
| 726 | |
| 727 // Interface to sun.reflect.ConstantPool objects | |
| 728 class sun_reflect_ConstantPool { | |
| 729 private: | |
| 730 // Note that to reduce dependencies on the JDK we compute these | |
| 731 // offsets at run-time. | |
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732 static int _oop_offset; |
| 0 | 733 |
| 734 static void compute_offsets(); | |
| 735 | |
| 736 public: | |
| 737 // Allocation | |
| 738 static Handle create(TRAPS); | |
| 739 | |
| 740 // Accessors | |
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741 static void set_cp(oop reflect, ConstantPool* value); |
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742 static int oop_offset() { |
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743 return _oop_offset; |
| 0 | 744 } |
| 745 | |
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746 static ConstantPool* get_cp(oop reflect); |
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747 |
| 0 | 748 // Debugging |
| 749 friend class JavaClasses; | |
| 750 }; | |
| 751 | |
| 752 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 753 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 754 private: | |
| 755 static int _base_offset; | |
| 756 static void compute_offsets(); | |
| 757 | |
| 758 public: | |
| 759 static int base_offset() { | |
| 760 return _base_offset; | |
| 761 } | |
| 762 | |
| 763 // Debugging | |
| 764 friend class JavaClasses; | |
| 765 }; | |
| 766 | |
| 767 // Interface to java.lang primitive type boxing objects: | |
| 768 // - java.lang.Boolean | |
| 769 // - java.lang.Character | |
| 770 // - java.lang.Float | |
| 771 // - java.lang.Double | |
| 772 // - java.lang.Byte | |
| 773 // - java.lang.Short | |
| 774 // - java.lang.Integer | |
| 775 // - java.lang.Long | |
| 776 | |
| 777 // This could be separated out into 8 individual classes. | |
| 778 | |
| 779 class java_lang_boxing_object: AllStatic { | |
| 780 private: | |
| 781 enum { | |
| 782 hc_value_offset = 0 | |
| 783 }; | |
| 784 static int value_offset; | |
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785 static int long_value_offset; |
| 0 | 786 |
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787 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 788 public: |
| 789 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 790 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 791 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 792 static BasicType get_value(oop box, jvalue* value); | |
| 793 static BasicType set_value(oop box, jvalue* value); | |
|
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794 static BasicType basic_type(oop box); |
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795 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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796 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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797 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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798 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 799 |
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800 static int value_offset_in_bytes(BasicType type) { |
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801 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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802 value_offset; |
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803 } |
| 0 | 804 |
| 805 // Debugging | |
| 806 friend class JavaClasses; | |
| 807 }; | |
| 808 | |
| 809 | |
| 810 | |
| 811 // Interface to java.lang.ref.Reference objects | |
| 812 | |
| 813 class java_lang_ref_Reference: AllStatic { | |
| 814 public: | |
| 815 enum { | |
| 816 hc_referent_offset = 0, | |
| 817 hc_queue_offset = 1, | |
| 818 hc_next_offset = 2, | |
| 819 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 820 }; | |
| 821 enum { | |
| 822 hc_static_lock_offset = 0, | |
| 823 hc_static_pending_offset = 1 | |
| 824 }; | |
| 825 | |
| 826 static int referent_offset; | |
| 827 static int queue_offset; | |
| 828 static int next_offset; | |
| 829 static int discovered_offset; | |
| 830 static int static_lock_offset; | |
| 831 static int static_pending_offset; | |
| 832 static int number_of_fake_oop_fields; | |
| 833 | |
| 834 // Accessors | |
|
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835 static oop referent(oop ref) { |
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836 return ref->obj_field(referent_offset); |
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837 } |
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838 static void set_referent(oop ref, oop value) { |
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839 ref->obj_field_put(referent_offset, value); |
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840 } |
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841 static void set_referent_raw(oop ref, oop value) { |
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842 ref->obj_field_put_raw(referent_offset, value); |
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843 } |
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844 static HeapWord* referent_addr(oop ref) { |
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845 return ref->obj_field_addr<HeapWord>(referent_offset); |
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846 } |
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847 static oop next(oop ref) { |
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848 return ref->obj_field(next_offset); |
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849 } |
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850 static void set_next(oop ref, oop value) { |
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851 ref->obj_field_put(next_offset, value); |
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852 } |
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853 static void set_next_raw(oop ref, oop value) { |
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854 ref->obj_field_put_raw(next_offset, value); |
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855 } |
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856 static HeapWord* next_addr(oop ref) { |
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857 return ref->obj_field_addr<HeapWord>(next_offset); |
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858 } |
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859 static oop discovered(oop ref) { |
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860 return ref->obj_field(discovered_offset); |
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861 } |
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862 static void set_discovered(oop ref, oop value) { |
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863 ref->obj_field_put(discovered_offset, value); |
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864 } |
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865 static void set_discovered_raw(oop ref, oop value) { |
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866 ref->obj_field_put_raw(discovered_offset, value); |
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867 } |
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868 static HeapWord* discovered_addr(oop ref) { |
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869 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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870 } |
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871 // Accessors for statics |
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872 static oop pending_list_lock(); |
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873 static oop pending_list(); |
| 0 | 874 |
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875 static HeapWord* pending_list_lock_addr(); |
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876 static HeapWord* pending_list_addr(); |
| 0 | 877 }; |
| 878 | |
| 879 | |
| 880 // Interface to java.lang.ref.SoftReference objects | |
| 881 | |
| 882 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 883 public: | |
| 884 enum { | |
| 885 // The timestamp is a long field and may need to be adjusted for alignment. | |
|
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886 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 887 }; |
| 888 enum { | |
| 889 hc_static_clock_offset = 0 | |
| 890 }; | |
| 891 | |
| 892 static int timestamp_offset; | |
| 893 static int static_clock_offset; | |
| 894 | |
| 895 // Accessors | |
| 896 static jlong timestamp(oop ref); | |
| 897 | |
| 898 // Accessors for statics | |
| 899 static jlong clock(); | |
| 900 static void set_clock(jlong value); | |
| 901 }; | |
| 902 | |
| 903 | |
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904 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 905 |
| 906 class MethodHandleEntry; | |
| 907 | |
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908 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 909 friend class JavaClasses; |
| 910 | |
| 911 private: | |
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912 static int _type_offset; // the MethodType of this MH |
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913 static int _form_offset; // the LambdaForm of this MH |
| 710 | 914 |
| 915 static void compute_offsets(); | |
| 916 | |
| 917 public: | |
| 918 // Accessors | |
| 919 static oop type(oop mh); | |
| 920 static void set_type(oop mh, oop mtype); | |
| 921 | |
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922 static oop form(oop mh); |
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923 static void set_form(oop mh, oop lform); |
| 710 | 924 |
| 925 // Testers | |
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926 static bool is_subclass(Klass* klass) { |
| 6983 | 927 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
| 710 | 928 } |
| 929 static bool is_instance(oop obj) { | |
| 930 return obj != NULL && is_subclass(obj->klass()); | |
| 931 } | |
| 932 | |
| 933 // Accessors for code generation: | |
| 934 static int type_offset_in_bytes() { return _type_offset; } | |
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935 static int form_offset_in_bytes() { return _form_offset; } |
| 710 | 936 }; |
| 937 | |
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938 // Interface to java.lang.invoke.LambdaForm objects |
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939 // (These are a private interface for managing adapter code generation.) |
| 3938 | 940 |
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941 class java_lang_invoke_LambdaForm: AllStatic { |
| 710 | 942 friend class JavaClasses; |
| 943 | |
| 944 private: | |
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945 static int _vmentry_offset; // type is MemberName |
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946 |
| 710 | 947 static void compute_offsets(); |
| 948 | |
| 949 public: | |
| 950 // Accessors | |
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951 static oop vmentry(oop lform); |
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952 static void set_vmentry(oop lform, oop invoker); |
| 710 | 953 |
| 954 // Testers | |
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955 static bool is_subclass(Klass* klass) { |
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956 return SystemDictionary::LambdaForm_klass() != NULL && |
| 6983 | 957 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
| 710 | 958 } |
| 959 static bool is_instance(oop obj) { | |
| 960 return obj != NULL && is_subclass(obj->klass()); | |
| 961 } | |
| 962 | |
| 963 // Accessors for code generation: | |
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964 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
| 710 | 965 }; |
| 966 | |
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967 |
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968 // Interface to java.lang.invoke.MemberName objects |
| 710 | 969 // (These are a private interface for Java code to query the class hierarchy.) |
| 970 | |
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971 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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972 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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973 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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974 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
| 3938 | 975 |
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976 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 977 friend class JavaClasses; |
| 978 | |
| 979 private: | |
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980 // From java.lang.invoke.MemberName: |
| 710 | 981 // private Class<?> clazz; // class in which the method is defined |
| 982 // private String name; // may be null if not yet materialized | |
| 983 // private Object type; // may be null if not yet materialized | |
| 984 // private int flags; // modifier bits; see reflect.Modifier | |
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985 // private intptr vmtarget; // VM-specific target value |
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986 // private intptr_t vmindex; // member index within class or interface |
| 710 | 987 static int _clazz_offset; |
| 988 static int _name_offset; | |
| 989 static int _type_offset; | |
| 990 static int _flags_offset; | |
| 991 static int _vmtarget_offset; | |
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992 static int _vmloader_offset; |
| 710 | 993 static int _vmindex_offset; |
| 994 | |
| 995 static void compute_offsets(); | |
| 996 | |
| 997 public: | |
| 998 // Accessors | |
| 999 static oop clazz(oop mname); | |
| 1000 static void set_clazz(oop mname, oop clazz); | |
| 1001 | |
| 1002 static oop type(oop mname); | |
| 1003 static void set_type(oop mname, oop type); | |
| 1004 | |
| 1005 static oop name(oop mname); | |
| 1006 static void set_name(oop mname, oop name); | |
| 1007 | |
| 1008 static int flags(oop mname); | |
| 1009 static void set_flags(oop mname, int flags); | |
| 1010 | |
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1011 static Metadata* vmtarget(oop mname); |
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1012 static void set_vmtarget(oop mname, Metadata* target); |
| 710 | 1013 |
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1014 static intptr_t vmindex(oop mname); |
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1015 static void set_vmindex(oop mname, intptr_t index); |
| 710 | 1016 |
| 1017 // Testers | |
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1018 static bool is_subclass(Klass* klass) { |
| 6983 | 1019 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
| 710 | 1020 } |
| 1021 static bool is_instance(oop obj) { | |
| 1022 return obj != NULL && is_subclass(obj->klass()); | |
| 1023 } | |
| 1024 | |
| 1025 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 1026 enum { | |
| 1027 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 1028 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 1029 MN_IS_FIELD = 0x00040000, // field | |
| 1030 MN_IS_TYPE = 0x00080000, // nested type | |
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1031 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1032 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1033 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1034 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1035 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
| 710 | 1036 }; |
| 1037 | |
| 1038 // Accessors for code generation: | |
| 1039 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1040 static int type_offset_in_bytes() { return _type_offset; } | |
| 1041 static int name_offset_in_bytes() { return _name_offset; } | |
| 1042 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1043 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1044 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1045 }; | |
| 1046 | |
| 1047 | |
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1048 // Interface to java.lang.invoke.MethodType objects |
| 710 | 1049 |
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1050 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1051 friend class JavaClasses; |
| 1052 | |
| 1053 private: | |
| 1054 static int _rtype_offset; | |
| 1055 static int _ptypes_offset; | |
| 1056 | |
| 1057 static void compute_offsets(); | |
| 1058 | |
| 1059 public: | |
| 1060 // Accessors | |
| 1061 static oop rtype(oop mt); | |
| 1062 static objArrayOop ptypes(oop mt); | |
| 1063 | |
| 1064 static oop ptype(oop mt, int index); | |
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1065 static int ptype_count(oop mt); |
| 710 | 1066 |
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1067 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1068 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1069 |
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1070 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1071 static void print_signature(oop mt, outputStream* st); |
| 1072 | |
| 1073 static bool is_instance(oop obj) { | |
| 1074 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1075 } | |
| 1076 | |
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1077 static bool equals(oop mt1, oop mt2); |
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1078 |
| 710 | 1079 // Accessors for code generation: |
| 1080 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1081 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1082 }; | |
| 1083 | |
| 1084 | |
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1085 // Interface to java.lang.invoke.CallSite objects |
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1086 |
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1087 class java_lang_invoke_CallSite: AllStatic { |
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1088 friend class JavaClasses; |
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1089 |
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1090 private: |
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1091 static int _target_offset; |
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1092 |
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1093 static void compute_offsets(); |
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1094 |
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1095 public: |
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1096 // Accessors |
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1097 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1098 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1099 |
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1100 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1101 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
|
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1102 |
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1103 // Testers |
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1104 static bool is_subclass(Klass* klass) { |
| 6983 | 1105 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1106 } |
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1107 static bool is_instance(oop obj) { |
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1108 return obj != NULL && is_subclass(obj->klass()); |
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1109 } |
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1110 |
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1111 // Accessors for code generation: |
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1112 static int target_offset_in_bytes() { return _target_offset; } |
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1113 }; |
| 710 | 1114 |
| 1115 | |
| 0 | 1116 // Interface to java.security.AccessControlContext objects |
| 1117 | |
| 1118 class java_security_AccessControlContext: AllStatic { | |
| 1119 private: | |
| 1120 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1121 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1122 static int _context_offset; | |
| 1123 static int _privilegedContext_offset; | |
| 1124 static int _isPrivileged_offset; | |
| 1125 | |
| 1126 static void compute_offsets(); | |
| 1127 public: | |
| 1128 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1129 | |
| 1130 // Debugging/initialization | |
| 1131 friend class JavaClasses; | |
| 1132 }; | |
| 1133 | |
| 1134 | |
| 1135 // Interface to java.lang.ClassLoader objects | |
| 1136 | |
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1137 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1138 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) \ |
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1139 macro(java_lang_ClassLoader, dependencies, object_signature, false) |
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1140 |
| 0 | 1141 class java_lang_ClassLoader : AllStatic { |
| 1142 private: | |
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1143 // The fake offsets are added by the class loader when java.lang.Class is loaded |
| 0 | 1144 enum { |
| 1145 hc_parent_offset = 0 | |
| 1146 }; | |
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1147 static int _loader_data_offset; |
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1148 static int _dependencies_offset; |
| 3938 | 1149 static bool offsets_computed; |
| 0 | 1150 static int parent_offset; |
| 3938 | 1151 static int parallelCapable_offset; |
| 1152 | |
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1153 public: |
| 3938 | 1154 static void compute_offsets(); |
| 0 | 1155 |
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1156 static ClassLoaderData** loader_data_addr(oop loader); |
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1157 static ClassLoaderData* loader_data(oop loader); |
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1158 |
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1159 static oop dependencies(oop loader); |
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1160 static HeapWord* dependencies_addr(oop loader); |
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1161 |
| 0 | 1162 static oop parent(oop loader); |
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1163 static bool isAncestor(oop loader, oop cl); |
| 0 | 1164 |
| 3938 | 1165 // Support for parallelCapable field |
| 1166 static bool parallelCapable(oop the_class_mirror); | |
| 1167 | |
| 0 | 1168 static bool is_trusted_loader(oop loader); |
| 1169 | |
| 1170 // Fix for 4474172 | |
| 1171 static oop non_reflection_class_loader(oop loader); | |
| 1172 | |
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1173 // Testers |
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1174 static bool is_subclass(Klass* klass) { |
| 6983 | 1175 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1176 } |
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1177 static bool is_instance(oop obj) { |
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1178 return obj != NULL && is_subclass(obj->klass()); |
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1179 } |
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1180 |
| 0 | 1181 // Debugging |
| 1182 friend class JavaClasses; | |
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1183 friend class ClassFileParser; // access to number_of_fake_fields |
| 0 | 1184 }; |
| 1185 | |
| 1186 | |
| 1187 // Interface to java.lang.System objects | |
| 1188 | |
| 1189 class java_lang_System : AllStatic { | |
| 1190 private: | |
| 1191 enum { | |
| 1192 hc_static_in_offset = 0, | |
| 1193 hc_static_out_offset = 1, | |
| 1194 hc_static_err_offset = 2 | |
| 1195 }; | |
| 1196 | |
| 1197 static int static_in_offset; | |
| 1198 static int static_out_offset; | |
| 1199 static int static_err_offset; | |
| 1200 | |
| 1201 public: | |
| 1202 static int in_offset_in_bytes(); | |
| 1203 static int out_offset_in_bytes(); | |
| 1204 static int err_offset_in_bytes(); | |
| 1205 | |
| 1206 // Debugging | |
| 1207 friend class JavaClasses; | |
| 1208 }; | |
| 1209 | |
| 1210 | |
| 1211 // Interface to java.lang.StackTraceElement objects | |
| 1212 | |
| 1213 class java_lang_StackTraceElement: AllStatic { | |
| 1214 private: | |
| 1215 enum { | |
| 1216 hc_declaringClass_offset = 0, | |
| 1217 hc_methodName_offset = 1, | |
| 1218 hc_fileName_offset = 2, | |
| 1219 hc_lineNumber_offset = 3 | |
| 1220 }; | |
| 1221 | |
| 1222 static int declaringClass_offset; | |
| 1223 static int methodName_offset; | |
| 1224 static int fileName_offset; | |
| 1225 static int lineNumber_offset; | |
| 1226 | |
| 1227 public: | |
| 1228 // Setters | |
| 1229 static void set_declaringClass(oop element, oop value); | |
| 1230 static void set_methodName(oop element, oop value); | |
| 1231 static void set_fileName(oop element, oop value); | |
| 1232 static void set_lineNumber(oop element, int value); | |
| 1233 | |
| 1234 // Create an instance of StackTraceElement | |
| 1235 static oop create(methodHandle m, int bci, TRAPS); | |
| 1236 | |
| 1237 // Debugging | |
| 1238 friend class JavaClasses; | |
| 1239 }; | |
| 1240 | |
| 1241 | |
| 1242 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1243 | |
| 1244 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1245 private: | |
| 1246 enum { | |
| 1247 hc_classes_offset, | |
| 1248 hc_classEnabled_offset, | |
| 1249 hc_packages_offset, | |
| 1250 hc_packageEnabled_offset, | |
| 1251 hc_deflt_offset | |
| 1252 }; | |
| 1253 | |
| 1254 static int classes_offset; | |
| 1255 static int classEnabled_offset; | |
| 1256 static int packages_offset; | |
| 1257 static int packageEnabled_offset; | |
| 1258 static int deflt_offset; | |
| 1259 | |
| 1260 public: | |
| 1261 // Setters | |
| 1262 static void set_classes(oop obj, oop val); | |
| 1263 static void set_classEnabled(oop obj, oop val); | |
| 1264 static void set_packages(oop obj, oop val); | |
| 1265 static void set_packageEnabled(oop obj, oop val); | |
| 1266 static void set_deflt(oop obj, bool val); | |
| 1267 // Debugging | |
| 1268 friend class JavaClasses; | |
| 1269 }; | |
| 1270 | |
| 1271 | |
| 1272 class java_nio_Buffer: AllStatic { | |
| 1273 private: | |
| 1274 static int _limit_offset; | |
| 1275 | |
| 1276 public: | |
| 1277 static int limit_offset(); | |
| 1278 static void compute_offsets(); | |
| 1279 }; | |
| 1280 | |
| 1281 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1282 private: | |
| 1283 static int _owner_offset; | |
| 1284 public: | |
| 1285 static void initialize(TRAPS); | |
| 1286 static oop get_owner_threadObj(oop obj); | |
| 1287 }; | |
| 1288 | |
| 3938 | 1289 // Use to declare fields that need to be injected into Java classes |
| 1290 // for the JVM to use. The name_index and signature_index are | |
| 1291 // declared in vmSymbols. The may_be_java flag is used to declare | |
| 1292 // fields that might already exist in Java but should be injected if | |
| 1293 // they don't. Otherwise the field is unconditionally injected and | |
| 1294 // the JVM uses the injected one. This is to ensure that name | |
| 1295 // collisions don't occur. In general may_be_java should be false | |
| 1296 // unless there's a good reason. | |
| 1297 | |
| 1298 class InjectedField { | |
| 1299 public: | |
| 1300 const SystemDictionary::WKID klass_id; | |
| 1301 const vmSymbols::SID name_index; | |
| 1302 const vmSymbols::SID signature_index; | |
| 1303 const bool may_be_java; | |
| 1304 | |
| 1305 | |
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1306 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
| 3938 | 1307 Symbol* name() const { return lookup_symbol(name_index); } |
| 1308 Symbol* signature() const { return lookup_symbol(signature_index); } | |
| 1309 | |
| 1310 int compute_offset(); | |
| 1311 | |
| 1312 // Find the Symbol for this index | |
| 1313 static Symbol* lookup_symbol(int symbol_index) { | |
| 1314 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
| 1315 } | |
| 1316 }; | |
| 1317 | |
| 1318 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
| 1319 klass##_##name##_enum, | |
| 1320 | |
| 1321 #define ALL_INJECTED_FIELDS(macro) \ | |
| 1322 CLASS_INJECTED_FIELDS(macro) \ | |
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1323 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1324 MEMBERNAME_INJECTED_FIELDS(macro) |
| 3938 | 1325 |
| 0 | 1326 // Interface to hard-coded offset checking |
| 1327 | |
| 1328 class JavaClasses : AllStatic { | |
| 1329 private: | |
| 3938 | 1330 |
| 1331 static InjectedField _injected_fields[]; | |
| 1332 | |
| 0 | 1333 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 1334 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
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1335 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 3938 | 1336 |
| 0 | 1337 public: |
| 3938 | 1338 enum InjectedFieldID { |
| 1339 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
| 1340 MAX_enum | |
| 1341 }; | |
| 1342 | |
| 1343 static int compute_injected_offset(InjectedFieldID id); | |
| 1344 | |
| 0 | 1345 static void compute_hard_coded_offsets(); |
| 1346 static void compute_offsets(); | |
| 1347 static void check_offsets() PRODUCT_RETURN; | |
| 3938 | 1348 |
| 1349 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
| 0 | 1350 }; |
| 1972 | 1351 |
| 3938 | 1352 #undef DECLARE_INJECTED_FIELD_ENUM |
| 1353 | |
| 1972 | 1354 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |