Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/javaClasses.hpp @ 23263:7d8724b3c156
8048353: jstack -l crashes VM when a Java mirror for a primitive type is locked
Reviewed-by: coleenp, dcubed
| author | vkempik |
|---|---|
| date | Mon, 20 Jul 2015 18:57:07 +0300 |
| parents | 157895117ad5 |
| children | dd9cc155639c efe013052465 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2015, 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_offset(oop string, int offset) { |
| 65 assert(initialized, "Must be initialized"); | |
| 66 if (offset_offset > 0) { | |
| 67 string->int_field_put(offset_offset, offset); | |
| 68 } | |
| 69 } | |
| 70 static void set_count( oop string, int count) { | |
| 71 assert(initialized, "Must be initialized"); | |
| 72 if (count_offset > 0) { | |
| 73 string->int_field_put(count_offset, count); | |
| 74 } | |
| 75 } | |
| 0 | 76 |
| 77 public: | |
| 6057 | 78 static void compute_offsets(); |
| 79 | |
| 0 | 80 // Instance creation |
| 81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
| 82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
| 83 static Handle create_from_str(const char* utf8_str, TRAPS); | |
| 84 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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85 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
| 0 | 86 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
| 87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
| 88 | |
| 6057 | 89 static bool has_offset_field() { |
| 90 assert(initialized, "Must be initialized"); | |
| 91 return (offset_offset > 0); | |
| 92 } | |
| 93 | |
| 94 static bool has_count_field() { | |
| 95 assert(initialized, "Must be initialized"); | |
| 96 return (count_offset > 0); | |
| 97 } | |
| 98 | |
| 99 static bool has_hash_field() { | |
| 100 assert(initialized, "Must be initialized"); | |
| 101 return (hash_offset > 0); | |
| 102 } | |
| 103 | |
| 104 static int value_offset_in_bytes() { | |
| 105 assert(initialized && (value_offset > 0), "Must be initialized"); | |
| 106 return value_offset; | |
| 107 } | |
| 108 static int count_offset_in_bytes() { | |
| 109 assert(initialized && (count_offset > 0), "Must be initialized"); | |
| 110 return count_offset; | |
| 111 } | |
| 112 static int offset_offset_in_bytes() { | |
| 113 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
| 114 return offset_offset; | |
| 115 } | |
| 116 static int hash_offset_in_bytes() { | |
| 117 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
| 118 return hash_offset; | |
| 119 } | |
| 0 | 120 |
| 17764 | 121 static void set_value(oop string, typeArrayOop buffer) { |
| 122 assert(initialized && (value_offset > 0), "Must be initialized"); | |
| 123 string->obj_field_put(value_offset, (oop)buffer); | |
| 124 } | |
| 125 static void set_hash(oop string, unsigned int hash) { | |
| 126 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
| 127 string->int_field_put(hash_offset, hash); | |
| 128 } | |
| 129 | |
| 0 | 130 // Accessors |
| 131 static typeArrayOop value(oop java_string) { | |
| 6057 | 132 assert(initialized && (value_offset > 0), "Must be initialized"); |
| 0 | 133 assert(is_instance(java_string), "must be java_string"); |
| 134 return (typeArrayOop) java_string->obj_field(value_offset); | |
| 135 } | |
| 17764 | 136 static unsigned int hash(oop java_string) { |
| 137 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
| 138 assert(is_instance(java_string), "must be java_string"); | |
| 139 return java_string->int_field(hash_offset); | |
| 140 } | |
| 0 | 141 static int offset(oop java_string) { |
| 6057 | 142 assert(initialized, "Must be initialized"); |
| 0 | 143 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 144 if (offset_offset > 0) { |
| 145 return java_string->int_field(offset_offset); | |
| 146 } else { | |
| 147 return 0; | |
| 148 } | |
| 0 | 149 } |
| 150 static int length(oop java_string) { | |
| 6057 | 151 assert(initialized, "Must be initialized"); |
| 0 | 152 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 153 if (count_offset > 0) { |
| 154 return java_string->int_field(count_offset); | |
| 155 } else { | |
| 156 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
| 157 } | |
| 0 | 158 } |
| 159 static int utf8_length(oop java_string); | |
| 160 | |
| 161 // String converters | |
| 162 static char* as_utf8_string(oop java_string); | |
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163 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
| 0 | 164 static char* as_utf8_string(oop java_string, int start, int len); |
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165 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
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166 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); |
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167 // produce an ascii string with all other values quoted using \u#### |
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168 static char* as_quoted_ascii(oop java_string); |
| 0 | 169 |
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170 // Compute the hash value for a java.lang.String object which would |
| 6162 | 171 // contain the characters passed in. |
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172 // |
| 6162 | 173 // As the hash value used by the String object itself, in |
| 174 // String.hashCode(). This value is normally calculated in Java code | |
| 175 // in the String.hashCode method(), but is precomputed for String | |
| 176 // objects in the shared archive file. | |
| 177 // hash P(31) from Kernighan & Ritchie | |
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178 // |
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179 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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180 template <typename T> static unsigned int hash_code(T* s, int len) { |
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181 unsigned int h = 0; |
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182 while (len-- > 0) { |
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183 h = 31*h + (unsigned int) *s; |
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184 s++; |
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185 } |
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186 return h; |
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187 } |
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188 static unsigned int hash_code(oop java_string); |
| 6162 | 189 |
| 190 // This is the string hash code used by the StringTable, which may be | |
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191 // the same as String.hashCode or an alternate hash code. |
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192 static unsigned int hash_string(oop java_string); |
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193 |
| 0 | 194 static bool equals(oop java_string, jchar* chars, int len); |
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195 static bool equals(oop str1, oop str2); |
| 0 | 196 |
| 197 // Conversion between '.' and '/' formats | |
| 198 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
| 199 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
| 200 | |
| 201 // Conversion | |
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202 static Symbol* as_symbol(Handle java_string, TRAPS); |
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203 static Symbol* as_symbol_or_null(oop java_string); |
| 0 | 204 |
| 205 // Testers | |
| 206 static bool is_instance(oop obj) { | |
| 1142 | 207 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
| 0 | 208 } |
| 209 | |
| 210 // Debugging | |
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211 static void print(oop java_string, outputStream* st); |
| 0 | 212 friend class JavaClasses; |
| 213 }; | |
| 214 | |
| 215 | |
| 216 // Interface to java.lang.Class objects | |
| 217 | |
| 3938 | 218 #define CLASS_INJECTED_FIELDS(macro) \ |
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219 macro(java_lang_Class, klass, intptr_signature, false) \ |
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220 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
| 3938 | 221 macro(java_lang_Class, oop_size, int_signature, false) \ |
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222 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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223 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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224 macro(java_lang_Class, init_lock, object_signature, false) \ |
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225 macro(java_lang_Class, signers, object_signature, false) |
| 3938 | 226 |
| 0 | 227 class java_lang_Class : AllStatic { |
| 3938 | 228 friend class VMStructs; |
| 229 | |
| 0 | 230 private: |
| 231 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 232 | |
| 3938 | 233 static int _klass_offset; |
| 234 static int _array_klass_offset; | |
| 0 | 235 |
| 3938 | 236 static int _oop_size_offset; |
| 237 static int _static_oop_field_count_offset; | |
| 0 | 238 |
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239 static int _protection_domain_offset; |
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240 static int _init_lock_offset; |
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241 static int _signers_offset; |
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242 static int _class_loader_offset; |
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243 |
| 0 | 244 static bool offsets_computed; |
| 245 static int classRedefinedCount_offset; | |
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246 |
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247 static GrowableArray<Klass*>* _fixup_mirror_list; |
| 0 | 248 |
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249 static void set_init_lock(oop java_class, oop init_lock); |
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250 static void set_protection_domain(oop java_class, oop protection_domain); |
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251 static void set_class_loader(oop java_class, oop class_loader); |
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252 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS); |
| 0 | 253 public: |
| 3938 | 254 static void compute_offsets(); |
| 255 | |
| 0 | 256 // Instance creation |
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257 static void create_mirror(KlassHandle k, Handle class_loader, |
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258 Handle protection_domain, TRAPS); |
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259 static void fixup_mirror(KlassHandle k, TRAPS); |
| 0 | 260 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
| 261 // Conversion | |
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262 static Klass* as_Klass(oop java_class); |
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263 static void set_klass(oop java_class, Klass* klass); |
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264 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
| 710 | 265 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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266 Klass* refk_oop = NULL; |
| 710 | 267 BasicType result = as_BasicType(java_class, &refk_oop); |
| 268 (*reference_klass) = KlassHandle(refk_oop); | |
| 269 return result; | |
| 270 } | |
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271 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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272 static void print_signature(oop java_class, outputStream *st); |
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273 static const char* as_external_name(oop java_class); |
| 0 | 274 // Testing |
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275 static bool is_instance(oop obj) { |
| 1142 | 276 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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277 } |
| 0 | 278 static bool is_primitive(oop java_class); |
| 279 static BasicType primitive_type(oop java_class); | |
| 280 static oop primitive_mirror(BasicType t); | |
| 281 // JVM_NewArray support | |
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282 static Klass* array_klass(oop java_class); |
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283 static void set_array_klass(oop java_class, Klass* klass); |
| 0 | 284 // compiler support for class operations |
| 3938 | 285 static int klass_offset_in_bytes() { return _klass_offset; } |
| 286 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
| 0 | 287 // Support for classRedefinedCount field |
| 288 static int classRedefinedCount(oop the_class_mirror); | |
| 289 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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290 |
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291 // Support for embedded per-class oops |
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292 static oop protection_domain(oop java_class); |
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293 static oop init_lock(oop java_class); |
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294 static objArrayOop signers(oop java_class); |
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295 static void set_signers(oop java_class, objArrayOop signers); |
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296 |
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297 static oop class_loader(oop java_class); |
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298 |
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299 static int oop_size(oop java_class); |
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300 static void set_oop_size(oop java_class, int size); |
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301 static int static_oop_field_count(oop java_class); |
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302 static void set_static_oop_field_count(oop java_class, int size); |
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303 |
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304 static GrowableArray<Klass*>* fixup_mirror_list() { |
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305 return _fixup_mirror_list; |
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306 } |
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307 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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308 _fixup_mirror_list = v; |
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309 } |
| 0 | 310 // Debugging |
| 311 friend class JavaClasses; | |
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312 friend class InstanceKlass; // verification code accesses offsets |
| 0 | 313 friend class ClassFileParser; // access to number_of_fake_fields |
| 314 }; | |
| 315 | |
| 316 // Interface to java.lang.Thread objects | |
| 317 | |
| 318 class java_lang_Thread : AllStatic { | |
| 319 private: | |
| 320 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 321 // so we compute the offsets at startup rather than hard-wiring them. | |
| 322 static int _name_offset; | |
| 323 static int _group_offset; | |
| 324 static int _contextClassLoader_offset; | |
| 325 static int _inheritedAccessControlContext_offset; | |
| 326 static int _priority_offset; | |
| 327 static int _eetop_offset; | |
| 328 static int _daemon_offset; | |
| 329 static int _stillborn_offset; | |
| 330 static int _stackSize_offset; | |
| 331 static int _tid_offset; | |
| 332 static int _thread_status_offset; | |
| 333 static int _park_blocker_offset; | |
| 334 static int _park_event_offset ; | |
| 335 | |
| 336 static void compute_offsets(); | |
| 337 | |
| 338 public: | |
| 339 // Instance creation | |
| 340 static oop create(); | |
| 341 // Returns the JavaThread associated with the thread obj | |
| 342 static JavaThread* thread(oop java_thread); | |
| 343 // Set JavaThread for instance | |
| 344 static void set_thread(oop java_thread, JavaThread* thread); | |
| 345 // Name | |
| 346 static typeArrayOop name(oop java_thread); | |
| 347 static void set_name(oop java_thread, typeArrayOop name); | |
| 348 // Priority | |
| 349 static ThreadPriority priority(oop java_thread); | |
| 350 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 351 // Thread group | |
| 352 static oop threadGroup(oop java_thread); | |
| 353 // Stillborn | |
| 354 static bool is_stillborn(oop java_thread); | |
| 355 static void set_stillborn(oop java_thread); | |
| 356 // Alive (NOTE: this is not really a field, but provides the correct | |
| 357 // definition without doing a Java call) | |
| 358 static bool is_alive(oop java_thread); | |
| 359 // Daemon | |
| 360 static bool is_daemon(oop java_thread); | |
| 361 static void set_daemon(oop java_thread); | |
| 362 // Context ClassLoader | |
| 363 static oop context_class_loader(oop java_thread); | |
| 364 // Control context | |
| 365 static oop inherited_access_control_context(oop java_thread); | |
| 366 // Stack size hint | |
| 367 static jlong stackSize(oop java_thread); | |
| 368 // Thread ID | |
| 369 static jlong thread_id(oop java_thread); | |
| 370 | |
| 371 // Blocker object responsible for thread parking | |
| 372 static oop park_blocker(oop java_thread); | |
| 373 | |
| 374 // Pointer to type-stable park handler, encoded as jlong. | |
| 375 // Should be set when apparently null | |
| 376 // For details, see unsafe.cpp Unsafe_Unpark | |
| 377 static jlong park_event(oop java_thread); | |
| 378 static bool set_park_event(oop java_thread, jlong ptr); | |
| 379 | |
| 380 // Java Thread Status for JVMTI and M&M use. | |
| 381 // This thread status info is saved in threadStatus field of | |
| 382 // java.lang.Thread java class. | |
| 383 enum ThreadStatus { | |
| 384 NEW = 0, | |
| 385 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 386 JVMTI_THREAD_STATE_RUNNABLE, | |
| 387 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 388 JVMTI_THREAD_STATE_WAITING + | |
| 389 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 390 JVMTI_THREAD_STATE_SLEEPING, | |
| 391 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 392 JVMTI_THREAD_STATE_WAITING + | |
| 393 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 394 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 395 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 396 JVMTI_THREAD_STATE_WAITING + | |
| 397 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 398 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 399 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 400 JVMTI_THREAD_STATE_WAITING + | |
| 401 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 402 JVMTI_THREAD_STATE_PARKED, | |
| 403 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 404 JVMTI_THREAD_STATE_WAITING + | |
| 405 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 406 JVMTI_THREAD_STATE_PARKED, | |
| 407 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 408 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 409 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 410 }; | |
| 411 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 412 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 413 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 414 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 415 | |
| 416 static const char* thread_status_name(oop java_thread_oop); | |
| 417 | |
| 418 // Debugging | |
| 419 friend class JavaClasses; | |
| 420 }; | |
| 421 | |
| 422 // Interface to java.lang.ThreadGroup objects | |
| 423 | |
| 424 class java_lang_ThreadGroup : AllStatic { | |
| 425 private: | |
| 426 static int _parent_offset; | |
| 427 static int _name_offset; | |
| 428 static int _threads_offset; | |
| 429 static int _groups_offset; | |
| 430 static int _maxPriority_offset; | |
| 431 static int _destroyed_offset; | |
| 432 static int _daemon_offset; | |
| 433 static int _vmAllowSuspension_offset; | |
| 434 static int _nthreads_offset; | |
| 435 static int _ngroups_offset; | |
| 436 | |
| 437 static void compute_offsets(); | |
| 438 | |
| 439 public: | |
| 440 // parent ThreadGroup | |
| 441 static oop parent(oop java_thread_group); | |
| 442 // name | |
| 443 static typeArrayOop name(oop java_thread_group); | |
| 444 // ("name as oop" accessor is not necessary) | |
| 445 // Number of threads in group | |
| 446 static int nthreads(oop java_thread_group); | |
| 447 // threads | |
| 448 static objArrayOop threads(oop java_thread_group); | |
| 449 // Number of threads in group | |
| 450 static int ngroups(oop java_thread_group); | |
| 451 // groups | |
| 452 static objArrayOop groups(oop java_thread_group); | |
| 453 // maxPriority in group | |
| 454 static ThreadPriority maxPriority(oop java_thread_group); | |
| 455 // Destroyed | |
| 456 static bool is_destroyed(oop java_thread_group); | |
| 457 // Daemon | |
| 458 static bool is_daemon(oop java_thread_group); | |
| 459 // vmAllowSuspension | |
| 460 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 461 // Debugging | |
| 462 friend class JavaClasses; | |
| 463 }; | |
| 464 | |
| 465 | |
| 466 | |
| 467 // Interface to java.lang.Throwable objects | |
| 468 | |
| 469 class java_lang_Throwable: AllStatic { | |
| 470 friend class BacktraceBuilder; | |
| 471 | |
| 472 private: | |
| 473 // Offsets | |
| 474 enum { | |
| 475 hc_backtrace_offset = 0, | |
| 476 hc_detailMessage_offset = 1, | |
| 477 hc_cause_offset = 2, // New since 1.4 | |
| 478 hc_stackTrace_offset = 3 // New since 1.4 | |
| 479 }; | |
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480 enum { |
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481 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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482 }; |
| 0 | 483 // Trace constants |
| 484 enum { | |
| 485 trace_methods_offset = 0, | |
| 486 trace_bcis_offset = 1, | |
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487 trace_mirrors_offset = 2, |
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488 trace_cprefs_offset = 3, |
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489 trace_next_offset = 4, |
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490 trace_size = 5, |
| 0 | 491 trace_chunk_size = 32 |
| 492 }; | |
| 493 | |
| 494 static int backtrace_offset; | |
| 495 static int detailMessage_offset; | |
| 496 static int cause_offset; | |
| 497 static int stackTrace_offset; | |
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498 static int static_unassigned_stacktrace_offset; |
| 0 | 499 |
| 500 // Printing | |
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501 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci, int cpref); |
| 0 | 502 // StackTrace (programmatic access, new since 1.4) |
| 503 static void clear_stacktrace(oop throwable); | |
| 504 // No stack trace available | |
| 505 static const char* no_stack_trace_message(); | |
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506 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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507 static void set_stacktrace(oop throwable, oop st_element_array); |
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508 static oop unassigned_stacktrace(); |
| 0 | 509 |
| 510 public: | |
| 511 // Backtrace | |
| 512 static oop backtrace(oop throwable); | |
| 513 static void set_backtrace(oop throwable, oop value); | |
| 514 // Needed by JVMTI to filter out this internal field. | |
| 515 static int get_backtrace_offset() { return backtrace_offset;} | |
| 516 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 517 // Message | |
| 518 static oop message(oop throwable); | |
| 519 static oop message(Handle throwable); | |
| 520 static void set_message(oop throwable, oop value); | |
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521 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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522 int version, int bci, int cpref); |
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523 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
| 0 | 524 static void print_stack_usage(Handle stream); |
| 525 | |
| 526 // Allocate space for backtrace (created but stack trace not filled in) | |
| 527 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 528 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 529 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 530 // Fill in current stack trace, can cause GC | |
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531 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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532 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 533 // Programmatic access to stack trace |
| 534 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 535 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 536 // Printing | |
| 537 static void print(oop throwable, outputStream* st); | |
| 538 static void print(Handle throwable, outputStream* st); | |
| 539 static void print_stack_trace(oop throwable, outputStream* st); | |
| 540 // Debugging | |
| 541 friend class JavaClasses; | |
| 542 }; | |
| 543 | |
| 544 | |
| 545 // Interface to java.lang.reflect.AccessibleObject objects | |
| 546 | |
| 547 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 548 private: | |
| 549 // Note that to reduce dependencies on the JDK we compute these | |
| 550 // offsets at run-time. | |
| 551 static int override_offset; | |
| 552 | |
| 553 static void compute_offsets(); | |
| 554 | |
| 555 public: | |
| 556 // Accessors | |
| 557 static jboolean override(oop reflect); | |
| 558 static void set_override(oop reflect, jboolean value); | |
| 559 | |
| 560 // Debugging | |
| 561 friend class JavaClasses; | |
| 562 }; | |
| 563 | |
| 564 | |
| 565 // Interface to java.lang.reflect.Method objects | |
| 566 | |
| 567 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 568 private: | |
| 569 // Note that to reduce dependencies on the JDK we compute these | |
| 570 // offsets at run-time. | |
| 571 static int clazz_offset; | |
| 572 static int name_offset; | |
| 573 static int returnType_offset; | |
| 574 static int parameterTypes_offset; | |
| 575 static int exceptionTypes_offset; | |
| 576 static int slot_offset; | |
| 577 static int modifiers_offset; | |
| 578 static int signature_offset; | |
| 579 static int annotations_offset; | |
| 580 static int parameter_annotations_offset; | |
| 581 static int annotation_default_offset; | |
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582 static int type_annotations_offset; |
| 0 | 583 |
| 584 static void compute_offsets(); | |
| 585 | |
| 586 public: | |
| 587 // Allocation | |
| 588 static Handle create(TRAPS); | |
| 589 | |
| 590 // Accessors | |
| 591 static oop clazz(oop reflect); | |
| 592 static void set_clazz(oop reflect, oop value); | |
| 593 | |
| 594 static oop name(oop method); | |
| 595 static void set_name(oop method, oop value); | |
| 596 | |
| 597 static oop return_type(oop method); | |
| 598 static void set_return_type(oop method, oop value); | |
| 599 | |
| 600 static oop parameter_types(oop method); | |
| 601 static void set_parameter_types(oop method, oop value); | |
| 602 | |
| 603 static oop exception_types(oop method); | |
| 604 static void set_exception_types(oop method, oop value); | |
| 605 | |
| 606 static int slot(oop reflect); | |
| 607 static void set_slot(oop reflect, int value); | |
| 608 | |
| 609 static int modifiers(oop method); | |
| 610 static void set_modifiers(oop method, int value); | |
| 611 | |
| 612 static bool has_signature_field(); | |
| 613 static oop signature(oop method); | |
| 614 static void set_signature(oop method, oop value); | |
| 615 | |
| 616 static bool has_annotations_field(); | |
| 617 static oop annotations(oop method); | |
| 618 static void set_annotations(oop method, oop value); | |
| 619 | |
| 620 static bool has_parameter_annotations_field(); | |
| 621 static oop parameter_annotations(oop method); | |
| 622 static void set_parameter_annotations(oop method, oop value); | |
| 623 | |
| 624 static bool has_annotation_default_field(); | |
| 625 static oop annotation_default(oop method); | |
| 626 static void set_annotation_default(oop method, oop value); | |
| 627 | |
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628 static bool has_type_annotations_field(); |
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629 static oop type_annotations(oop method); |
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630 static void set_type_annotations(oop method, oop value); |
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631 |
| 0 | 632 // Debugging |
| 633 friend class JavaClasses; | |
| 634 }; | |
| 635 | |
| 636 | |
| 637 // Interface to java.lang.reflect.Constructor objects | |
| 638 | |
| 639 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 640 private: | |
| 641 // Note that to reduce dependencies on the JDK we compute these | |
| 642 // offsets at run-time. | |
| 643 static int clazz_offset; | |
| 644 static int parameterTypes_offset; | |
| 645 static int exceptionTypes_offset; | |
| 646 static int slot_offset; | |
| 647 static int modifiers_offset; | |
| 648 static int signature_offset; | |
| 649 static int annotations_offset; | |
| 650 static int parameter_annotations_offset; | |
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651 static int type_annotations_offset; |
| 0 | 652 |
| 653 static void compute_offsets(); | |
| 654 | |
| 655 public: | |
| 656 // Allocation | |
| 657 static Handle create(TRAPS); | |
| 658 | |
| 659 // Accessors | |
| 660 static oop clazz(oop reflect); | |
| 661 static void set_clazz(oop reflect, oop value); | |
| 662 | |
| 663 static oop parameter_types(oop constructor); | |
| 664 static void set_parameter_types(oop constructor, oop value); | |
| 665 | |
| 666 static oop exception_types(oop constructor); | |
| 667 static void set_exception_types(oop constructor, oop value); | |
| 668 | |
| 669 static int slot(oop reflect); | |
| 670 static void set_slot(oop reflect, int value); | |
| 671 | |
| 672 static int modifiers(oop constructor); | |
| 673 static void set_modifiers(oop constructor, int value); | |
| 674 | |
| 675 static bool has_signature_field(); | |
| 676 static oop signature(oop constructor); | |
| 677 static void set_signature(oop constructor, oop value); | |
| 678 | |
| 679 static bool has_annotations_field(); | |
| 680 static oop annotations(oop constructor); | |
| 681 static void set_annotations(oop constructor, oop value); | |
| 682 | |
| 683 static bool has_parameter_annotations_field(); | |
| 684 static oop parameter_annotations(oop method); | |
| 685 static void set_parameter_annotations(oop method, oop value); | |
| 686 | |
|
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687 static bool has_type_annotations_field(); |
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688 static oop type_annotations(oop constructor); |
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689 static void set_type_annotations(oop constructor, oop value); |
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690 |
| 0 | 691 // Debugging |
| 692 friend class JavaClasses; | |
| 693 }; | |
| 694 | |
| 695 | |
| 696 // Interface to java.lang.reflect.Field objects | |
| 697 | |
| 698 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 699 private: | |
| 700 // Note that to reduce dependencies on the JDK we compute these | |
| 701 // offsets at run-time. | |
| 702 static int clazz_offset; | |
| 703 static int name_offset; | |
| 704 static int type_offset; | |
| 705 static int slot_offset; | |
| 706 static int modifiers_offset; | |
| 707 static int signature_offset; | |
| 708 static int annotations_offset; | |
|
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709 static int type_annotations_offset; |
| 0 | 710 |
| 711 static void compute_offsets(); | |
| 712 | |
| 713 public: | |
| 714 // Allocation | |
| 715 static Handle create(TRAPS); | |
| 716 | |
| 717 // Accessors | |
| 718 static oop clazz(oop reflect); | |
| 719 static void set_clazz(oop reflect, oop value); | |
| 720 | |
| 721 static oop name(oop field); | |
| 722 static void set_name(oop field, oop value); | |
| 723 | |
| 724 static oop type(oop field); | |
| 725 static void set_type(oop field, oop value); | |
| 726 | |
| 727 static int slot(oop reflect); | |
| 728 static void set_slot(oop reflect, int value); | |
| 729 | |
| 730 static int modifiers(oop field); | |
| 731 static void set_modifiers(oop field, int value); | |
| 732 | |
| 733 static bool has_signature_field(); | |
| 734 static oop signature(oop constructor); | |
| 735 static void set_signature(oop constructor, oop value); | |
| 736 | |
| 737 static bool has_annotations_field(); | |
| 738 static oop annotations(oop constructor); | |
| 739 static void set_annotations(oop constructor, oop value); | |
| 740 | |
| 741 static bool has_parameter_annotations_field(); | |
| 742 static oop parameter_annotations(oop method); | |
| 743 static void set_parameter_annotations(oop method, oop value); | |
| 744 | |
| 745 static bool has_annotation_default_field(); | |
| 746 static oop annotation_default(oop method); | |
| 747 static void set_annotation_default(oop method, oop value); | |
| 748 | |
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749 static bool has_type_annotations_field(); |
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750 static oop type_annotations(oop field); |
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751 static void set_type_annotations(oop field, oop value); |
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752 |
| 0 | 753 // Debugging |
| 754 friend class JavaClasses; | |
| 755 }; | |
| 756 | |
|
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757 class java_lang_reflect_Parameter { |
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758 private: |
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759 // Note that to reduce dependencies on the JDK we compute these |
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760 // offsets at run-time. |
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761 static int name_offset; |
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762 static int modifiers_offset; |
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763 static int index_offset; |
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764 static int executable_offset; |
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765 |
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766 static void compute_offsets(); |
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767 |
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768 public: |
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769 // Allocation |
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770 static Handle create(TRAPS); |
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771 |
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772 // Accessors |
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773 static oop name(oop field); |
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774 static void set_name(oop field, oop value); |
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775 |
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776 static int index(oop reflect); |
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777 static void set_index(oop reflect, int value); |
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778 |
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779 static int modifiers(oop reflect); |
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780 static void set_modifiers(oop reflect, int value); |
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781 |
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782 static oop executable(oop constructor); |
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783 static void set_executable(oop constructor, oop value); |
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784 |
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785 friend class JavaClasses; |
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786 }; |
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787 |
| 0 | 788 // Interface to sun.reflect.ConstantPool objects |
| 789 class sun_reflect_ConstantPool { | |
| 790 private: | |
| 791 // Note that to reduce dependencies on the JDK we compute these | |
| 792 // offsets at run-time. | |
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793 static int _oop_offset; |
| 0 | 794 |
| 795 static void compute_offsets(); | |
| 796 | |
| 797 public: | |
| 798 // Allocation | |
| 799 static Handle create(TRAPS); | |
| 800 | |
| 801 // Accessors | |
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802 static void set_cp(oop reflect, ConstantPool* value); |
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803 static int oop_offset() { |
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804 return _oop_offset; |
| 0 | 805 } |
| 806 | |
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807 static ConstantPool* get_cp(oop reflect); |
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808 |
| 0 | 809 // Debugging |
| 810 friend class JavaClasses; | |
| 811 }; | |
| 812 | |
| 813 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 814 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 815 private: | |
| 816 static int _base_offset; | |
| 817 static void compute_offsets(); | |
| 818 | |
| 819 public: | |
| 820 static int base_offset() { | |
| 821 return _base_offset; | |
| 822 } | |
| 823 | |
| 824 // Debugging | |
| 825 friend class JavaClasses; | |
| 826 }; | |
| 827 | |
| 828 // Interface to java.lang primitive type boxing objects: | |
| 829 // - java.lang.Boolean | |
| 830 // - java.lang.Character | |
| 831 // - java.lang.Float | |
| 832 // - java.lang.Double | |
| 833 // - java.lang.Byte | |
| 834 // - java.lang.Short | |
| 835 // - java.lang.Integer | |
| 836 // - java.lang.Long | |
| 837 | |
| 838 // This could be separated out into 8 individual classes. | |
| 839 | |
| 840 class java_lang_boxing_object: AllStatic { | |
| 841 private: | |
| 842 enum { | |
| 843 hc_value_offset = 0 | |
| 844 }; | |
| 845 static int value_offset; | |
|
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846 static int long_value_offset; |
| 0 | 847 |
|
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848 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 849 public: |
| 850 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 851 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 852 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 853 static BasicType get_value(oop box, jvalue* value); | |
| 854 static BasicType set_value(oop box, jvalue* value); | |
|
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855 static BasicType basic_type(oop box); |
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856 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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857 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
|
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858 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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859 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 860 |
|
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861 static int value_offset_in_bytes(BasicType type) { |
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862 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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863 value_offset; |
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864 } |
| 0 | 865 |
| 866 // Debugging | |
| 867 friend class JavaClasses; | |
| 868 }; | |
| 869 | |
| 870 | |
| 871 | |
| 872 // Interface to java.lang.ref.Reference objects | |
| 873 | |
| 874 class java_lang_ref_Reference: AllStatic { | |
| 875 public: | |
| 876 enum { | |
| 877 hc_referent_offset = 0, | |
| 878 hc_queue_offset = 1, | |
| 879 hc_next_offset = 2, | |
| 880 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 881 }; | |
| 882 enum { | |
| 883 hc_static_lock_offset = 0, | |
| 884 hc_static_pending_offset = 1 | |
| 885 }; | |
| 886 | |
| 887 static int referent_offset; | |
| 888 static int queue_offset; | |
| 889 static int next_offset; | |
| 890 static int discovered_offset; | |
| 891 static int static_lock_offset; | |
| 892 static int static_pending_offset; | |
| 893 static int number_of_fake_oop_fields; | |
| 894 | |
| 895 // Accessors | |
|
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896 static oop referent(oop ref) { |
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897 return ref->obj_field(referent_offset); |
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898 } |
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899 static void set_referent(oop ref, oop value) { |
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900 ref->obj_field_put(referent_offset, value); |
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901 } |
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902 static void set_referent_raw(oop ref, oop value) { |
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903 ref->obj_field_put_raw(referent_offset, value); |
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904 } |
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905 static HeapWord* referent_addr(oop ref) { |
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906 return ref->obj_field_addr<HeapWord>(referent_offset); |
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907 } |
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908 static oop next(oop ref) { |
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909 return ref->obj_field(next_offset); |
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910 } |
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911 static void set_next(oop ref, oop value) { |
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912 ref->obj_field_put(next_offset, value); |
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913 } |
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914 static void set_next_raw(oop ref, oop value) { |
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915 ref->obj_field_put_raw(next_offset, value); |
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916 } |
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917 static HeapWord* next_addr(oop ref) { |
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918 return ref->obj_field_addr<HeapWord>(next_offset); |
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919 } |
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920 static oop discovered(oop ref) { |
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921 return ref->obj_field(discovered_offset); |
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922 } |
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923 static void set_discovered(oop ref, oop value) { |
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924 ref->obj_field_put(discovered_offset, value); |
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925 } |
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926 static void set_discovered_raw(oop ref, oop value) { |
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927 ref->obj_field_put_raw(discovered_offset, value); |
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928 } |
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929 static HeapWord* discovered_addr(oop ref) { |
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930 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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931 } |
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932 // Accessors for statics |
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933 static oop pending_list_lock(); |
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934 static oop pending_list(); |
| 0 | 935 |
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936 static HeapWord* pending_list_lock_addr(); |
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937 static HeapWord* pending_list_addr(); |
| 0 | 938 }; |
| 939 | |
| 940 | |
| 941 // Interface to java.lang.ref.SoftReference objects | |
| 942 | |
| 943 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 944 public: | |
| 945 enum { | |
| 946 // The timestamp is a long field and may need to be adjusted for alignment. | |
|
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947 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 948 }; |
| 949 enum { | |
| 950 hc_static_clock_offset = 0 | |
| 951 }; | |
| 952 | |
| 953 static int timestamp_offset; | |
| 954 static int static_clock_offset; | |
| 955 | |
| 956 // Accessors | |
| 957 static jlong timestamp(oop ref); | |
| 958 | |
| 959 // Accessors for statics | |
| 960 static jlong clock(); | |
| 961 static void set_clock(jlong value); | |
| 962 }; | |
| 963 | |
| 964 | |
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965 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 966 |
| 967 class MethodHandleEntry; | |
| 968 | |
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969 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 970 friend class JavaClasses; |
| 971 | |
| 972 private: | |
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973 static int _type_offset; // the MethodType of this MH |
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974 static int _form_offset; // the LambdaForm of this MH |
| 710 | 975 |
| 976 static void compute_offsets(); | |
| 977 | |
| 978 public: | |
| 979 // Accessors | |
| 980 static oop type(oop mh); | |
| 981 static void set_type(oop mh, oop mtype); | |
| 982 | |
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983 static oop form(oop mh); |
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984 static void set_form(oop mh, oop lform); |
| 710 | 985 |
| 986 // Testers | |
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987 static bool is_subclass(Klass* klass) { |
| 6983 | 988 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
| 710 | 989 } |
| 990 static bool is_instance(oop obj) { | |
| 991 return obj != NULL && is_subclass(obj->klass()); | |
| 992 } | |
| 993 | |
| 994 // Accessors for code generation: | |
| 995 static int type_offset_in_bytes() { return _type_offset; } | |
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996 static int form_offset_in_bytes() { return _form_offset; } |
| 710 | 997 }; |
| 998 | |
|
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999 // Interface to java.lang.invoke.DirectMethodHandle objects |
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1000 |
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1001 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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1002 friend class JavaClasses; |
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1003 |
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1004 private: |
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1005 static int _member_offset; // the MemberName of this DMH |
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1006 |
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1007 static void compute_offsets(); |
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1008 |
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1009 public: |
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1010 // Accessors |
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1011 static oop member(oop mh); |
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1012 |
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1013 // Testers |
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1014 static bool is_subclass(Klass* klass) { |
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1015 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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1016 } |
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1017 static bool is_instance(oop obj) { |
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1018 return obj != NULL && is_subclass(obj->klass()); |
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1019 } |
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1020 |
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1021 // Accessors for code generation: |
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1022 static int member_offset_in_bytes() { return _member_offset; } |
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1023 }; |
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1024 |
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1025 // Interface to java.lang.invoke.LambdaForm objects |
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1026 // (These are a private interface for managing adapter code generation.) |
| 3938 | 1027 |
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1028 class java_lang_invoke_LambdaForm: AllStatic { |
| 710 | 1029 friend class JavaClasses; |
| 1030 | |
| 1031 private: | |
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1032 static int _vmentry_offset; // type is MemberName |
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1033 |
| 710 | 1034 static void compute_offsets(); |
| 1035 | |
| 1036 public: | |
| 1037 // Accessors | |
|
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1038 static oop vmentry(oop lform); |
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1039 static void set_vmentry(oop lform, oop invoker); |
| 710 | 1040 |
| 1041 // Testers | |
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1042 static bool is_subclass(Klass* klass) { |
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1043 return SystemDictionary::LambdaForm_klass() != NULL && |
| 6983 | 1044 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
| 710 | 1045 } |
| 1046 static bool is_instance(oop obj) { | |
| 1047 return obj != NULL && is_subclass(obj->klass()); | |
| 1048 } | |
| 1049 | |
| 1050 // Accessors for code generation: | |
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1051 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
| 710 | 1052 }; |
| 1053 | |
|
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1054 |
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1055 // Interface to java.lang.invoke.MemberName objects |
| 710 | 1056 // (These are a private interface for Java code to query the class hierarchy.) |
| 1057 | |
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1058 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1059 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1060 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1061 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
| 3938 | 1062 |
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1063 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 1064 friend class JavaClasses; |
| 1065 | |
| 1066 private: | |
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1067 // From java.lang.invoke.MemberName: |
| 710 | 1068 // private Class<?> clazz; // class in which the method is defined |
| 1069 // private String name; // may be null if not yet materialized | |
| 1070 // private Object type; // may be null if not yet materialized | |
| 1071 // private int flags; // modifier bits; see reflect.Modifier | |
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1072 // private intptr vmtarget; // VM-specific target value |
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1073 // private intptr_t vmindex; // member index within class or interface |
| 710 | 1074 static int _clazz_offset; |
| 1075 static int _name_offset; | |
| 1076 static int _type_offset; | |
| 1077 static int _flags_offset; | |
| 1078 static int _vmtarget_offset; | |
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1079 static int _vmloader_offset; |
| 710 | 1080 static int _vmindex_offset; |
| 1081 | |
| 1082 static void compute_offsets(); | |
| 1083 | |
| 1084 public: | |
| 1085 // Accessors | |
| 1086 static oop clazz(oop mname); | |
| 1087 static void set_clazz(oop mname, oop clazz); | |
| 1088 | |
| 1089 static oop type(oop mname); | |
| 1090 static void set_type(oop mname, oop type); | |
| 1091 | |
| 1092 static oop name(oop mname); | |
| 1093 static void set_name(oop mname, oop name); | |
| 1094 | |
| 1095 static int flags(oop mname); | |
| 1096 static void set_flags(oop mname, int flags); | |
| 1097 | |
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1098 static Metadata* vmtarget(oop mname); |
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1099 static void set_vmtarget(oop mname, Metadata* target); |
| 710 | 1100 |
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1101 static intptr_t vmindex(oop mname); |
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1102 static void set_vmindex(oop mname, intptr_t index); |
| 710 | 1103 |
| 1104 // Testers | |
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1105 static bool is_subclass(Klass* klass) { |
| 6983 | 1106 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
| 710 | 1107 } |
| 1108 static bool is_instance(oop obj) { | |
| 1109 return obj != NULL && is_subclass(obj->klass()); | |
| 1110 } | |
| 1111 | |
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1112 static bool is_method(oop obj); |
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1113 |
| 710 | 1114 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): |
| 1115 enum { | |
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1116 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1117 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1118 MN_IS_FIELD = 0x00040000, // field |
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1119 MN_IS_TYPE = 0x00080000, // nested type |
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1120 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1121 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1122 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1123 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1124 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1125 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
| 710 | 1126 }; |
| 1127 | |
| 1128 // Accessors for code generation: | |
| 1129 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1130 static int type_offset_in_bytes() { return _type_offset; } | |
| 1131 static int name_offset_in_bytes() { return _name_offset; } | |
| 1132 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1133 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1134 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1135 }; | |
| 1136 | |
| 1137 | |
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1138 // Interface to java.lang.invoke.MethodType objects |
| 710 | 1139 |
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1140 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1141 friend class JavaClasses; |
| 1142 | |
| 1143 private: | |
| 1144 static int _rtype_offset; | |
| 1145 static int _ptypes_offset; | |
| 1146 | |
| 1147 static void compute_offsets(); | |
| 1148 | |
| 1149 public: | |
| 1150 // Accessors | |
| 1151 static oop rtype(oop mt); | |
| 1152 static objArrayOop ptypes(oop mt); | |
| 1153 | |
| 1154 static oop ptype(oop mt, int index); | |
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1155 static int ptype_count(oop mt); |
| 710 | 1156 |
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1157 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1158 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1159 |
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1160 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1161 static void print_signature(oop mt, outputStream* st); |
| 1162 | |
| 1163 static bool is_instance(oop obj) { | |
| 1164 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1165 } | |
| 1166 | |
|
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1167 static bool equals(oop mt1, oop mt2); |
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1168 |
| 710 | 1169 // Accessors for code generation: |
| 1170 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1171 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1172 }; | |
| 1173 | |
| 1174 | |
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1175 // Interface to java.lang.invoke.CallSite objects |
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1176 |
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1177 class java_lang_invoke_CallSite: AllStatic { |
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1178 friend class JavaClasses; |
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1179 |
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1180 private: |
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1181 static int _target_offset; |
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1182 |
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1183 static void compute_offsets(); |
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1184 |
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1185 public: |
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1186 // Accessors |
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1187 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1188 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1189 |
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1190 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1191 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1192 |
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1193 // Testers |
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1194 static bool is_subclass(Klass* klass) { |
| 6983 | 1195 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
|
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1196 } |
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1197 static bool is_instance(oop obj) { |
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1198 return obj != NULL && is_subclass(obj->klass()); |
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1199 } |
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1200 |
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1201 // Accessors for code generation: |
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1202 static int target_offset_in_bytes() { return _target_offset; } |
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1203 }; |
| 710 | 1204 |
| 1205 | |
| 0 | 1206 // Interface to java.security.AccessControlContext objects |
| 1207 | |
| 1208 class java_security_AccessControlContext: AllStatic { | |
| 1209 private: | |
| 1210 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1211 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1212 static int _context_offset; | |
| 1213 static int _privilegedContext_offset; | |
| 1214 static int _isPrivileged_offset; | |
| 11010 | 1215 static int _isAuthorized_offset; |
| 0 | 1216 |
| 1217 static void compute_offsets(); | |
| 1218 public: | |
| 1219 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1220 | |
| 11010 | 1221 static bool is_authorized(Handle context); |
| 1222 | |
| 0 | 1223 // Debugging/initialization |
| 1224 friend class JavaClasses; | |
| 1225 }; | |
| 1226 | |
| 1227 | |
| 1228 // Interface to java.lang.ClassLoader objects | |
| 1229 | |
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1230 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1231 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1232 |
| 0 | 1233 class java_lang_ClassLoader : AllStatic { |
| 1234 private: | |
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1235 // The fake offsets are added by the class loader when java.lang.Class is loaded |
| 0 | 1236 enum { |
| 1237 hc_parent_offset = 0 | |
| 1238 }; | |
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1239 static int _loader_data_offset; |
| 3938 | 1240 static bool offsets_computed; |
| 0 | 1241 static int parent_offset; |
| 3938 | 1242 static int parallelCapable_offset; |
| 1243 | |
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1244 public: |
| 3938 | 1245 static void compute_offsets(); |
| 0 | 1246 |
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1247 static ClassLoaderData** loader_data_addr(oop loader); |
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1248 static ClassLoaderData* loader_data(oop loader); |
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1249 |
| 0 | 1250 static oop parent(oop loader); |
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1251 static bool isAncestor(oop loader, oop cl); |
| 0 | 1252 |
| 3938 | 1253 // Support for parallelCapable field |
| 1254 static bool parallelCapable(oop the_class_mirror); | |
| 1255 | |
| 0 | 1256 static bool is_trusted_loader(oop loader); |
| 1257 | |
| 1258 // Fix for 4474172 | |
| 1259 static oop non_reflection_class_loader(oop loader); | |
| 1260 | |
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1261 // Testers |
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1262 static bool is_subclass(Klass* klass) { |
| 6983 | 1263 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1264 } |
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1265 static bool is_instance(oop obj) { |
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1266 return obj != NULL && is_subclass(obj->klass()); |
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1267 } |
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1268 |
| 0 | 1269 // Debugging |
| 1270 friend class JavaClasses; | |
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1271 friend class ClassFileParser; // access to number_of_fake_fields |
| 0 | 1272 }; |
| 1273 | |
| 1274 | |
| 1275 // Interface to java.lang.System objects | |
| 1276 | |
| 1277 class java_lang_System : AllStatic { | |
| 1278 private: | |
| 1279 enum { | |
| 1280 hc_static_in_offset = 0, | |
| 1281 hc_static_out_offset = 1, | |
| 11010 | 1282 hc_static_err_offset = 2, |
| 1283 hc_static_security_offset = 3 | |
| 0 | 1284 }; |
| 1285 | |
| 1286 static int static_in_offset; | |
| 1287 static int static_out_offset; | |
| 1288 static int static_err_offset; | |
| 11010 | 1289 static int static_security_offset; |
| 0 | 1290 |
| 1291 public: | |
| 1292 static int in_offset_in_bytes(); | |
| 1293 static int out_offset_in_bytes(); | |
| 1294 static int err_offset_in_bytes(); | |
| 1295 | |
| 11010 | 1296 static bool has_security_manager(); |
| 1297 | |
| 0 | 1298 // Debugging |
| 1299 friend class JavaClasses; | |
| 1300 }; | |
| 1301 | |
| 1302 | |
| 1303 // Interface to java.lang.StackTraceElement objects | |
| 1304 | |
| 1305 class java_lang_StackTraceElement: AllStatic { | |
| 1306 private: | |
| 1307 enum { | |
| 1308 hc_declaringClass_offset = 0, | |
| 1309 hc_methodName_offset = 1, | |
| 1310 hc_fileName_offset = 2, | |
| 1311 hc_lineNumber_offset = 3 | |
| 1312 }; | |
| 1313 | |
| 1314 static int declaringClass_offset; | |
| 1315 static int methodName_offset; | |
| 1316 static int fileName_offset; | |
| 1317 static int lineNumber_offset; | |
| 1318 | |
| 1319 public: | |
| 1320 // Setters | |
| 1321 static void set_declaringClass(oop element, oop value); | |
| 1322 static void set_methodName(oop element, oop value); | |
| 1323 static void set_fileName(oop element, oop value); | |
| 1324 static void set_lineNumber(oop element, int value); | |
| 1325 | |
| 1326 // Create an instance of StackTraceElement | |
|
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1327 static oop create(Handle mirror, int method, int version, int bci, int cpref, TRAPS); |
|
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1328 static oop create(methodHandle method, int bci, TRAPS); |
| 0 | 1329 |
| 1330 // Debugging | |
| 1331 friend class JavaClasses; | |
| 1332 }; | |
| 1333 | |
| 1334 | |
| 1335 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1336 | |
| 1337 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1338 private: | |
| 1339 enum { | |
| 1340 hc_classes_offset, | |
| 1341 hc_classEnabled_offset, | |
| 1342 hc_packages_offset, | |
| 1343 hc_packageEnabled_offset, | |
| 1344 hc_deflt_offset | |
| 1345 }; | |
| 1346 | |
| 1347 static int classes_offset; | |
| 1348 static int classEnabled_offset; | |
| 1349 static int packages_offset; | |
| 1350 static int packageEnabled_offset; | |
| 1351 static int deflt_offset; | |
| 1352 | |
| 1353 public: | |
| 1354 // Setters | |
| 1355 static void set_classes(oop obj, oop val); | |
| 1356 static void set_classEnabled(oop obj, oop val); | |
| 1357 static void set_packages(oop obj, oop val); | |
| 1358 static void set_packageEnabled(oop obj, oop val); | |
| 1359 static void set_deflt(oop obj, bool val); | |
| 1360 // Debugging | |
| 1361 friend class JavaClasses; | |
| 1362 }; | |
| 1363 | |
| 1364 | |
| 1365 class java_nio_Buffer: AllStatic { | |
| 1366 private: | |
| 1367 static int _limit_offset; | |
| 1368 | |
| 1369 public: | |
| 1370 static int limit_offset(); | |
| 1371 static void compute_offsets(); | |
| 1372 }; | |
| 1373 | |
| 1374 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1375 private: | |
| 1376 static int _owner_offset; | |
| 1377 public: | |
| 1378 static void initialize(TRAPS); | |
| 1379 static oop get_owner_threadObj(oop obj); | |
| 1380 }; | |
| 1381 | |
| 3938 | 1382 // Use to declare fields that need to be injected into Java classes |
| 1383 // for the JVM to use. The name_index and signature_index are | |
| 1384 // declared in vmSymbols. The may_be_java flag is used to declare | |
| 1385 // fields that might already exist in Java but should be injected if | |
| 1386 // they don't. Otherwise the field is unconditionally injected and | |
| 1387 // the JVM uses the injected one. This is to ensure that name | |
| 1388 // collisions don't occur. In general may_be_java should be false | |
| 1389 // unless there's a good reason. | |
| 1390 | |
| 1391 class InjectedField { | |
| 1392 public: | |
| 1393 const SystemDictionary::WKID klass_id; | |
| 1394 const vmSymbols::SID name_index; | |
| 1395 const vmSymbols::SID signature_index; | |
| 1396 const bool may_be_java; | |
| 1397 | |
| 1398 | |
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1399 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
| 3938 | 1400 Symbol* name() const { return lookup_symbol(name_index); } |
| 1401 Symbol* signature() const { return lookup_symbol(signature_index); } | |
| 1402 | |
| 1403 int compute_offset(); | |
| 1404 | |
| 1405 // Find the Symbol for this index | |
| 1406 static Symbol* lookup_symbol(int symbol_index) { | |
| 1407 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
| 1408 } | |
| 1409 }; | |
| 1410 | |
| 1411 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
| 1412 klass##_##name##_enum, | |
| 1413 | |
| 1414 #define ALL_INJECTED_FIELDS(macro) \ | |
| 1415 CLASS_INJECTED_FIELDS(macro) \ | |
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1416 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1417 MEMBERNAME_INJECTED_FIELDS(macro) |
| 3938 | 1418 |
| 0 | 1419 // Interface to hard-coded offset checking |
| 1420 | |
| 1421 class JavaClasses : AllStatic { | |
| 1422 private: | |
| 3938 | 1423 |
| 1424 static InjectedField _injected_fields[]; | |
| 1425 | |
| 0 | 1426 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 1427 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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1428 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 3938 | 1429 |
| 0 | 1430 public: |
| 3938 | 1431 enum InjectedFieldID { |
| 1432 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
| 1433 MAX_enum | |
| 1434 }; | |
| 1435 | |
| 1436 static int compute_injected_offset(InjectedFieldID id); | |
| 1437 | |
| 0 | 1438 static void compute_hard_coded_offsets(); |
| 1439 static void compute_offsets(); | |
| 1440 static void check_offsets() PRODUCT_RETURN; | |
| 3938 | 1441 |
| 1442 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
| 0 | 1443 }; |
| 1972 | 1444 |
| 3938 | 1445 #undef DECLARE_INJECTED_FIELD_ENUM |
| 1446 | |
| 1972 | 1447 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |