Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 4009:e5928e7dab26
7098528: crash with java -XX:+ExtendedDTraceProbes
Reviewed-by: kvn
| author | never |
|---|---|
| date | Mon, 17 Oct 2011 21:38:29 -0700 |
| parents | e6b1331a51d2 |
| children | 120820e30baa 8f972594effc |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 enum { | |
| 56 hc_value_offset = 0, | |
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57 hc_offset_offset = 1 |
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58 //hc_count_offset = 2 -- not a word-scaled offset |
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59 //hc_hash_offset = 3 -- not a word-scaled offset |
| 0 | 60 }; |
| 61 | |
| 62 static int value_offset; | |
| 63 static int offset_offset; | |
| 64 static int count_offset; | |
| 65 static int hash_offset; | |
| 66 | |
| 67 static Handle basic_create(int length, bool tenured, TRAPS); | |
| 68 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); | |
| 69 | |
| 70 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); } | |
| 71 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); } | |
| 72 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); } | |
| 73 | |
| 74 public: | |
| 75 // Instance creation | |
| 76 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
| 77 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); | |
| 78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
| 79 static Handle create_from_str(const char* utf8_str, TRAPS); | |
| 80 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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81 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
| 0 | 82 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
| 83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
| 84 | |
| 85 static int value_offset_in_bytes() { return value_offset; } | |
| 86 static int count_offset_in_bytes() { return count_offset; } | |
| 87 static int offset_offset_in_bytes() { return offset_offset; } | |
| 88 static int hash_offset_in_bytes() { return hash_offset; } | |
| 89 | |
| 90 // Accessors | |
| 91 static typeArrayOop value(oop java_string) { | |
| 92 assert(is_instance(java_string), "must be java_string"); | |
| 93 return (typeArrayOop) java_string->obj_field(value_offset); | |
| 94 } | |
| 95 static int offset(oop java_string) { | |
| 96 assert(is_instance(java_string), "must be java_string"); | |
| 97 return java_string->int_field(offset_offset); | |
| 98 } | |
| 99 static int length(oop java_string) { | |
| 100 assert(is_instance(java_string), "must be java_string"); | |
| 101 return java_string->int_field(count_offset); | |
| 102 } | |
| 103 static int utf8_length(oop java_string); | |
| 104 | |
| 105 // String converters | |
| 106 static char* as_utf8_string(oop java_string); | |
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107 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
| 0 | 108 static char* as_utf8_string(oop java_string, int start, int len); |
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109 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
| 0 | 110 static jchar* as_unicode_string(oop java_string, int& length); |
| 111 | |
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112 // Compute the hash value for a java.lang.String object which would |
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113 // contain the characters passed in. This hash value is used for at |
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114 // least two purposes. |
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115 // |
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116 // (a) As the hash value used by the StringTable for bucket selection |
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117 // and comparison (stored in the HashtableEntry structures). This |
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118 // is used in the String.intern() method. |
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119 // |
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120 // (b) As the hash value used by the String object itself, in |
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121 // String.hashCode(). This value is normally calculate in Java code |
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122 // in the String.hashCode method(), but is precomputed for String |
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123 // objects in the shared archive file. |
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124 // |
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125 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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126 static unsigned int hash_string(jchar* s, int len) { |
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127 unsigned int h = 0; |
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128 while (len-- > 0) { |
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129 h = 31*h + (unsigned int) *s; |
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130 s++; |
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131 } |
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132 return h; |
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133 } |
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134 static unsigned int hash_string(oop java_string); |
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135 |
| 0 | 136 static bool equals(oop java_string, jchar* chars, int len); |
| 137 | |
| 138 // Conversion between '.' and '/' formats | |
| 139 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
| 140 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
| 141 | |
| 142 // Conversion | |
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143 static Symbol* as_symbol(Handle java_string, TRAPS); |
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144 static Symbol* as_symbol_or_null(oop java_string); |
| 0 | 145 |
| 146 // Testers | |
| 147 static bool is_instance(oop obj) { | |
| 1142 | 148 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
| 0 | 149 } |
| 150 | |
| 151 // Debugging | |
| 152 static void print(Handle java_string, outputStream* st); | |
| 153 friend class JavaClasses; | |
| 154 }; | |
| 155 | |
| 156 | |
| 157 // Interface to java.lang.Class objects | |
| 158 | |
| 3938 | 159 #define CLASS_INJECTED_FIELDS(macro) \ |
| 160 macro(java_lang_Class, klass, object_signature, false) \ | |
| 161 macro(java_lang_Class, resolved_constructor, object_signature, false) \ | |
| 162 macro(java_lang_Class, array_klass, object_signature, false) \ | |
| 163 macro(java_lang_Class, oop_size, int_signature, false) \ | |
| 164 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
| 165 | |
| 0 | 166 class java_lang_Class : AllStatic { |
| 3938 | 167 friend class VMStructs; |
| 168 | |
| 0 | 169 private: |
| 170 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 171 | |
| 3938 | 172 static int _klass_offset; |
| 173 static int _resolved_constructor_offset; | |
| 174 static int _array_klass_offset; | |
| 0 | 175 |
| 3938 | 176 static int _oop_size_offset; |
| 177 static int _static_oop_field_count_offset; | |
| 0 | 178 |
| 179 static bool offsets_computed; | |
| 180 static int classRedefinedCount_offset; | |
| 181 | |
| 182 public: | |
| 3938 | 183 static void compute_offsets(); |
| 184 | |
| 0 | 185 // Instance creation |
| 186 static oop create_mirror(KlassHandle k, TRAPS); | |
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187 static void fixup_mirror(KlassHandle k, TRAPS); |
| 0 | 188 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
| 189 // Conversion | |
| 190 static klassOop as_klassOop(oop java_class); | |
| 4009 | 191 static void set_klass(oop java_class, klassOop klass); |
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192 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
| 710 | 193 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
| 194 klassOop refk_oop = NULL; | |
| 195 BasicType result = as_BasicType(java_class, &refk_oop); | |
| 196 (*reference_klass) = KlassHandle(refk_oop); | |
| 197 return result; | |
| 198 } | |
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199 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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200 static void print_signature(oop java_class, outputStream *st); |
| 0 | 201 // Testing |
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202 static bool is_instance(oop obj) { |
| 1142 | 203 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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204 } |
| 0 | 205 static bool is_primitive(oop java_class); |
| 206 static BasicType primitive_type(oop java_class); | |
| 207 static oop primitive_mirror(BasicType t); | |
| 208 // JVM_NewInstance support | |
| 209 static methodOop resolved_constructor(oop java_class); | |
| 210 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
| 211 // JVM_NewArray support | |
| 212 static klassOop array_klass(oop java_class); | |
| 213 static void set_array_klass(oop java_class, klassOop klass); | |
| 214 // compiler support for class operations | |
| 3938 | 215 static int klass_offset_in_bytes() { return _klass_offset; } |
| 216 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
| 217 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
| 0 | 218 // Support for classRedefinedCount field |
| 219 static int classRedefinedCount(oop the_class_mirror); | |
| 220 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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221 |
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222 static int oop_size(oop java_class); |
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223 static void set_oop_size(oop java_class, int size); |
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224 static int static_oop_field_count(oop java_class); |
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225 static void set_static_oop_field_count(oop java_class, int size); |
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226 |
| 0 | 227 // Debugging |
| 228 friend class JavaClasses; | |
| 229 friend class instanceKlass; // verification code accesses offsets | |
| 230 friend class ClassFileParser; // access to number_of_fake_fields | |
| 231 }; | |
| 232 | |
| 233 // Interface to java.lang.Thread objects | |
| 234 | |
| 235 class java_lang_Thread : AllStatic { | |
| 236 private: | |
| 237 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 238 // so we compute the offsets at startup rather than hard-wiring them. | |
| 239 static int _name_offset; | |
| 240 static int _group_offset; | |
| 241 static int _contextClassLoader_offset; | |
| 242 static int _inheritedAccessControlContext_offset; | |
| 243 static int _priority_offset; | |
| 244 static int _eetop_offset; | |
| 245 static int _daemon_offset; | |
| 246 static int _stillborn_offset; | |
| 247 static int _stackSize_offset; | |
| 248 static int _tid_offset; | |
| 249 static int _thread_status_offset; | |
| 250 static int _park_blocker_offset; | |
| 251 static int _park_event_offset ; | |
| 252 | |
| 253 static void compute_offsets(); | |
| 254 | |
| 255 public: | |
| 256 // Instance creation | |
| 257 static oop create(); | |
| 258 // Returns the JavaThread associated with the thread obj | |
| 259 static JavaThread* thread(oop java_thread); | |
| 260 // Set JavaThread for instance | |
| 261 static void set_thread(oop java_thread, JavaThread* thread); | |
| 262 // Name | |
| 263 static typeArrayOop name(oop java_thread); | |
| 264 static void set_name(oop java_thread, typeArrayOop name); | |
| 265 // Priority | |
| 266 static ThreadPriority priority(oop java_thread); | |
| 267 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 268 // Thread group | |
| 269 static oop threadGroup(oop java_thread); | |
| 270 // Stillborn | |
| 271 static bool is_stillborn(oop java_thread); | |
| 272 static void set_stillborn(oop java_thread); | |
| 273 // Alive (NOTE: this is not really a field, but provides the correct | |
| 274 // definition without doing a Java call) | |
| 275 static bool is_alive(oop java_thread); | |
| 276 // Daemon | |
| 277 static bool is_daemon(oop java_thread); | |
| 278 static void set_daemon(oop java_thread); | |
| 279 // Context ClassLoader | |
| 280 static oop context_class_loader(oop java_thread); | |
| 281 // Control context | |
| 282 static oop inherited_access_control_context(oop java_thread); | |
| 283 // Stack size hint | |
| 284 static jlong stackSize(oop java_thread); | |
| 285 // Thread ID | |
| 286 static jlong thread_id(oop java_thread); | |
| 287 | |
| 288 // Blocker object responsible for thread parking | |
| 289 static oop park_blocker(oop java_thread); | |
| 290 | |
| 291 // Pointer to type-stable park handler, encoded as jlong. | |
| 292 // Should be set when apparently null | |
| 293 // For details, see unsafe.cpp Unsafe_Unpark | |
| 294 static jlong park_event(oop java_thread); | |
| 295 static bool set_park_event(oop java_thread, jlong ptr); | |
| 296 | |
| 297 // Java Thread Status for JVMTI and M&M use. | |
| 298 // This thread status info is saved in threadStatus field of | |
| 299 // java.lang.Thread java class. | |
| 300 enum ThreadStatus { | |
| 301 NEW = 0, | |
| 302 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 303 JVMTI_THREAD_STATE_RUNNABLE, | |
| 304 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 305 JVMTI_THREAD_STATE_WAITING + | |
| 306 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 307 JVMTI_THREAD_STATE_SLEEPING, | |
| 308 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 309 JVMTI_THREAD_STATE_WAITING + | |
| 310 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 311 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 312 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 313 JVMTI_THREAD_STATE_WAITING + | |
| 314 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 315 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 316 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 317 JVMTI_THREAD_STATE_WAITING + | |
| 318 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 319 JVMTI_THREAD_STATE_PARKED, | |
| 320 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 321 JVMTI_THREAD_STATE_WAITING + | |
| 322 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 323 JVMTI_THREAD_STATE_PARKED, | |
| 324 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 325 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 326 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 327 }; | |
| 328 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 329 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 330 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 331 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 332 | |
| 333 static const char* thread_status_name(oop java_thread_oop); | |
| 334 | |
| 335 // Debugging | |
| 336 friend class JavaClasses; | |
| 337 }; | |
| 338 | |
| 339 // Interface to java.lang.ThreadGroup objects | |
| 340 | |
| 341 class java_lang_ThreadGroup : AllStatic { | |
| 342 private: | |
| 343 static int _parent_offset; | |
| 344 static int _name_offset; | |
| 345 static int _threads_offset; | |
| 346 static int _groups_offset; | |
| 347 static int _maxPriority_offset; | |
| 348 static int _destroyed_offset; | |
| 349 static int _daemon_offset; | |
| 350 static int _vmAllowSuspension_offset; | |
| 351 static int _nthreads_offset; | |
| 352 static int _ngroups_offset; | |
| 353 | |
| 354 static void compute_offsets(); | |
| 355 | |
| 356 public: | |
| 357 // parent ThreadGroup | |
| 358 static oop parent(oop java_thread_group); | |
| 359 // name | |
| 360 static typeArrayOop name(oop java_thread_group); | |
| 361 // ("name as oop" accessor is not necessary) | |
| 362 // Number of threads in group | |
| 363 static int nthreads(oop java_thread_group); | |
| 364 // threads | |
| 365 static objArrayOop threads(oop java_thread_group); | |
| 366 // Number of threads in group | |
| 367 static int ngroups(oop java_thread_group); | |
| 368 // groups | |
| 369 static objArrayOop groups(oop java_thread_group); | |
| 370 // maxPriority in group | |
| 371 static ThreadPriority maxPriority(oop java_thread_group); | |
| 372 // Destroyed | |
| 373 static bool is_destroyed(oop java_thread_group); | |
| 374 // Daemon | |
| 375 static bool is_daemon(oop java_thread_group); | |
| 376 // vmAllowSuspension | |
| 377 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 378 // Debugging | |
| 379 friend class JavaClasses; | |
| 380 }; | |
| 381 | |
| 382 | |
| 383 | |
| 384 // Interface to java.lang.Throwable objects | |
| 385 | |
| 386 class java_lang_Throwable: AllStatic { | |
| 387 friend class BacktraceBuilder; | |
| 388 | |
| 389 private: | |
| 390 // Offsets | |
| 391 enum { | |
| 392 hc_backtrace_offset = 0, | |
| 393 hc_detailMessage_offset = 1, | |
| 394 hc_cause_offset = 2, // New since 1.4 | |
| 395 hc_stackTrace_offset = 3 // New since 1.4 | |
| 396 }; | |
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397 enum { |
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398 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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399 }; |
| 0 | 400 // Trace constants |
| 401 enum { | |
| 402 trace_methods_offset = 0, | |
| 403 trace_bcis_offset = 1, | |
| 404 trace_next_offset = 2, | |
| 405 trace_size = 3, | |
| 406 trace_chunk_size = 32 | |
| 407 }; | |
| 408 | |
| 409 static int backtrace_offset; | |
| 410 static int detailMessage_offset; | |
| 411 static int cause_offset; | |
| 412 static int stackTrace_offset; | |
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413 static int static_unassigned_stacktrace_offset; |
| 0 | 414 |
| 415 // Printing | |
| 416 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 417 static void print_to_stream(Handle stream, const char* str); | |
| 418 // StackTrace (programmatic access, new since 1.4) | |
| 419 static void clear_stacktrace(oop throwable); | |
| 420 // No stack trace available | |
| 421 static const char* no_stack_trace_message(); | |
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422 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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423 static void set_stacktrace(oop throwable, oop st_element_array); |
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424 static oop unassigned_stacktrace(); |
| 0 | 425 |
| 426 public: | |
| 427 // Backtrace | |
| 428 static oop backtrace(oop throwable); | |
| 429 static void set_backtrace(oop throwable, oop value); | |
| 430 // Needed by JVMTI to filter out this internal field. | |
| 431 static int get_backtrace_offset() { return backtrace_offset;} | |
| 432 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 433 // Message | |
| 434 static oop message(oop throwable); | |
| 435 static oop message(Handle throwable); | |
| 436 static void set_message(oop throwable, oop value); | |
| 437 // Print stack trace stored in exception by call-back to Java | |
| 438 // Note: this is no longer used in Merlin, but we still suppport | |
| 439 // it for compatibility. | |
| 440 static void print_stack_trace(oop throwable, oop print_stream); | |
| 441 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 442 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 443 static void print_stack_usage(Handle stream); | |
| 444 | |
| 445 // Allocate space for backtrace (created but stack trace not filled in) | |
| 446 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 447 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 448 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 449 // Fill in current stack trace, can cause GC | |
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450 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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451 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 452 // Programmatic access to stack trace |
| 453 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 454 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 455 // Printing | |
| 456 static void print(oop throwable, outputStream* st); | |
| 457 static void print(Handle throwable, outputStream* st); | |
| 458 static void print_stack_trace(oop throwable, outputStream* st); | |
| 459 // Debugging | |
| 460 friend class JavaClasses; | |
| 461 }; | |
| 462 | |
| 463 | |
| 464 // Interface to java.lang.reflect.AccessibleObject objects | |
| 465 | |
| 466 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 467 private: | |
| 468 // Note that to reduce dependencies on the JDK we compute these | |
| 469 // offsets at run-time. | |
| 470 static int override_offset; | |
| 471 | |
| 472 static void compute_offsets(); | |
| 473 | |
| 474 public: | |
| 475 // Accessors | |
| 476 static jboolean override(oop reflect); | |
| 477 static void set_override(oop reflect, jboolean value); | |
| 478 | |
| 479 // Debugging | |
| 480 friend class JavaClasses; | |
| 481 }; | |
| 482 | |
| 483 | |
| 484 // Interface to java.lang.reflect.Method objects | |
| 485 | |
| 486 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 487 private: | |
| 488 // Note that to reduce dependencies on the JDK we compute these | |
| 489 // offsets at run-time. | |
| 490 static int clazz_offset; | |
| 491 static int name_offset; | |
| 492 static int returnType_offset; | |
| 493 static int parameterTypes_offset; | |
| 494 static int exceptionTypes_offset; | |
| 495 static int slot_offset; | |
| 496 static int modifiers_offset; | |
| 497 static int signature_offset; | |
| 498 static int annotations_offset; | |
| 499 static int parameter_annotations_offset; | |
| 500 static int annotation_default_offset; | |
| 501 | |
| 502 static void compute_offsets(); | |
| 503 | |
| 504 public: | |
| 505 // Allocation | |
| 506 static Handle create(TRAPS); | |
| 507 | |
| 508 // Accessors | |
| 509 static oop clazz(oop reflect); | |
| 510 static void set_clazz(oop reflect, oop value); | |
| 511 | |
| 512 static oop name(oop method); | |
| 513 static void set_name(oop method, oop value); | |
| 514 | |
| 515 static oop return_type(oop method); | |
| 516 static void set_return_type(oop method, oop value); | |
| 517 | |
| 518 static oop parameter_types(oop method); | |
| 519 static void set_parameter_types(oop method, oop value); | |
| 520 | |
| 521 static oop exception_types(oop method); | |
| 522 static void set_exception_types(oop method, oop value); | |
| 523 | |
| 524 static int slot(oop reflect); | |
| 525 static void set_slot(oop reflect, int value); | |
| 526 | |
| 527 static int modifiers(oop method); | |
| 528 static void set_modifiers(oop method, int value); | |
| 529 | |
| 530 static bool has_signature_field(); | |
| 531 static oop signature(oop method); | |
| 532 static void set_signature(oop method, oop value); | |
| 533 | |
| 534 static bool has_annotations_field(); | |
| 535 static oop annotations(oop method); | |
| 536 static void set_annotations(oop method, oop value); | |
| 537 | |
| 538 static bool has_parameter_annotations_field(); | |
| 539 static oop parameter_annotations(oop method); | |
| 540 static void set_parameter_annotations(oop method, oop value); | |
| 541 | |
| 542 static bool has_annotation_default_field(); | |
| 543 static oop annotation_default(oop method); | |
| 544 static void set_annotation_default(oop method, oop value); | |
| 545 | |
| 546 // Debugging | |
| 547 friend class JavaClasses; | |
| 548 }; | |
| 549 | |
| 550 | |
| 551 // Interface to java.lang.reflect.Constructor objects | |
| 552 | |
| 553 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 554 private: | |
| 555 // Note that to reduce dependencies on the JDK we compute these | |
| 556 // offsets at run-time. | |
| 557 static int clazz_offset; | |
| 558 static int parameterTypes_offset; | |
| 559 static int exceptionTypes_offset; | |
| 560 static int slot_offset; | |
| 561 static int modifiers_offset; | |
| 562 static int signature_offset; | |
| 563 static int annotations_offset; | |
| 564 static int parameter_annotations_offset; | |
| 565 | |
| 566 static void compute_offsets(); | |
| 567 | |
| 568 public: | |
| 569 // Allocation | |
| 570 static Handle create(TRAPS); | |
| 571 | |
| 572 // Accessors | |
| 573 static oop clazz(oop reflect); | |
| 574 static void set_clazz(oop reflect, oop value); | |
| 575 | |
| 576 static oop parameter_types(oop constructor); | |
| 577 static void set_parameter_types(oop constructor, oop value); | |
| 578 | |
| 579 static oop exception_types(oop constructor); | |
| 580 static void set_exception_types(oop constructor, oop value); | |
| 581 | |
| 582 static int slot(oop reflect); | |
| 583 static void set_slot(oop reflect, int value); | |
| 584 | |
| 585 static int modifiers(oop constructor); | |
| 586 static void set_modifiers(oop constructor, int value); | |
| 587 | |
| 588 static bool has_signature_field(); | |
| 589 static oop signature(oop constructor); | |
| 590 static void set_signature(oop constructor, oop value); | |
| 591 | |
| 592 static bool has_annotations_field(); | |
| 593 static oop annotations(oop constructor); | |
| 594 static void set_annotations(oop constructor, oop value); | |
| 595 | |
| 596 static bool has_parameter_annotations_field(); | |
| 597 static oop parameter_annotations(oop method); | |
| 598 static void set_parameter_annotations(oop method, oop value); | |
| 599 | |
| 600 // Debugging | |
| 601 friend class JavaClasses; | |
| 602 }; | |
| 603 | |
| 604 | |
| 605 // Interface to java.lang.reflect.Field objects | |
| 606 | |
| 607 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 608 private: | |
| 609 // Note that to reduce dependencies on the JDK we compute these | |
| 610 // offsets at run-time. | |
| 611 static int clazz_offset; | |
| 612 static int name_offset; | |
| 613 static int type_offset; | |
| 614 static int slot_offset; | |
| 615 static int modifiers_offset; | |
| 616 static int signature_offset; | |
| 617 static int annotations_offset; | |
| 618 | |
| 619 static void compute_offsets(); | |
| 620 | |
| 621 public: | |
| 622 // Allocation | |
| 623 static Handle create(TRAPS); | |
| 624 | |
| 625 // Accessors | |
| 626 static oop clazz(oop reflect); | |
| 627 static void set_clazz(oop reflect, oop value); | |
| 628 | |
| 629 static oop name(oop field); | |
| 630 static void set_name(oop field, oop value); | |
| 631 | |
| 632 static oop type(oop field); | |
| 633 static void set_type(oop field, oop value); | |
| 634 | |
| 635 static int slot(oop reflect); | |
| 636 static void set_slot(oop reflect, int value); | |
| 637 | |
| 638 static int modifiers(oop field); | |
| 639 static void set_modifiers(oop field, int value); | |
| 640 | |
| 641 static bool has_signature_field(); | |
| 642 static oop signature(oop constructor); | |
| 643 static void set_signature(oop constructor, oop value); | |
| 644 | |
| 645 static bool has_annotations_field(); | |
| 646 static oop annotations(oop constructor); | |
| 647 static void set_annotations(oop constructor, oop value); | |
| 648 | |
| 649 static bool has_parameter_annotations_field(); | |
| 650 static oop parameter_annotations(oop method); | |
| 651 static void set_parameter_annotations(oop method, oop value); | |
| 652 | |
| 653 static bool has_annotation_default_field(); | |
| 654 static oop annotation_default(oop method); | |
| 655 static void set_annotation_default(oop method, oop value); | |
| 656 | |
| 657 // Debugging | |
| 658 friend class JavaClasses; | |
| 659 }; | |
| 660 | |
| 661 // Interface to sun.reflect.ConstantPool objects | |
| 662 class sun_reflect_ConstantPool { | |
| 663 private: | |
| 664 // Note that to reduce dependencies on the JDK we compute these | |
| 665 // offsets at run-time. | |
| 666 static int _cp_oop_offset; | |
| 667 | |
| 668 static void compute_offsets(); | |
| 669 | |
| 670 public: | |
| 671 // Allocation | |
| 672 static Handle create(TRAPS); | |
| 673 | |
| 674 // Accessors | |
| 675 static oop cp_oop(oop reflect); | |
| 676 static void set_cp_oop(oop reflect, oop value); | |
| 677 static int cp_oop_offset() { | |
| 678 return _cp_oop_offset; | |
| 679 } | |
| 680 | |
| 681 // Debugging | |
| 682 friend class JavaClasses; | |
| 683 }; | |
| 684 | |
| 685 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 686 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 687 private: | |
| 688 static int _base_offset; | |
| 689 static void compute_offsets(); | |
| 690 | |
| 691 public: | |
| 692 static int base_offset() { | |
| 693 return _base_offset; | |
| 694 } | |
| 695 | |
| 696 // Debugging | |
| 697 friend class JavaClasses; | |
| 698 }; | |
| 699 | |
| 700 // Interface to java.lang primitive type boxing objects: | |
| 701 // - java.lang.Boolean | |
| 702 // - java.lang.Character | |
| 703 // - java.lang.Float | |
| 704 // - java.lang.Double | |
| 705 // - java.lang.Byte | |
| 706 // - java.lang.Short | |
| 707 // - java.lang.Integer | |
| 708 // - java.lang.Long | |
| 709 | |
| 710 // This could be separated out into 8 individual classes. | |
| 711 | |
| 712 class java_lang_boxing_object: AllStatic { | |
| 713 private: | |
| 714 enum { | |
| 715 hc_value_offset = 0 | |
| 716 }; | |
| 717 static int value_offset; | |
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718 static int long_value_offset; |
| 0 | 719 |
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720 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 721 public: |
| 722 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 723 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 724 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 725 static BasicType get_value(oop box, jvalue* value); | |
| 726 static BasicType set_value(oop box, jvalue* value); | |
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727 static BasicType basic_type(oop box); |
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728 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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729 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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730 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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731 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 732 |
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733 static int value_offset_in_bytes(BasicType type) { |
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734 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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735 value_offset; |
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736 } |
| 0 | 737 |
| 738 // Debugging | |
| 739 friend class JavaClasses; | |
| 740 }; | |
| 741 | |
| 742 | |
| 743 | |
| 744 // Interface to java.lang.ref.Reference objects | |
| 745 | |
| 746 class java_lang_ref_Reference: AllStatic { | |
| 747 public: | |
| 748 enum { | |
| 749 hc_referent_offset = 0, | |
| 750 hc_queue_offset = 1, | |
| 751 hc_next_offset = 2, | |
| 752 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 753 }; | |
| 754 enum { | |
| 755 hc_static_lock_offset = 0, | |
| 756 hc_static_pending_offset = 1 | |
| 757 }; | |
| 758 | |
| 759 static int referent_offset; | |
| 760 static int queue_offset; | |
| 761 static int next_offset; | |
| 762 static int discovered_offset; | |
| 763 static int static_lock_offset; | |
| 764 static int static_pending_offset; | |
| 765 static int number_of_fake_oop_fields; | |
| 766 | |
| 767 // Accessors | |
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768 static oop referent(oop ref) { |
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769 return ref->obj_field(referent_offset); |
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770 } |
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771 static void set_referent(oop ref, oop value) { |
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772 ref->obj_field_put(referent_offset, value); |
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773 } |
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774 static void set_referent_raw(oop ref, oop value) { |
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775 ref->obj_field_put_raw(referent_offset, value); |
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776 } |
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777 static HeapWord* referent_addr(oop ref) { |
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778 return ref->obj_field_addr<HeapWord>(referent_offset); |
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779 } |
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780 static oop next(oop ref) { |
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781 return ref->obj_field(next_offset); |
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782 } |
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783 static void set_next(oop ref, oop value) { |
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784 ref->obj_field_put(next_offset, value); |
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785 } |
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786 static void set_next_raw(oop ref, oop value) { |
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787 ref->obj_field_put_raw(next_offset, value); |
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788 } |
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789 static HeapWord* next_addr(oop ref) { |
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790 return ref->obj_field_addr<HeapWord>(next_offset); |
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791 } |
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792 static oop discovered(oop ref) { |
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793 return ref->obj_field(discovered_offset); |
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794 } |
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795 static void set_discovered(oop ref, oop value) { |
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796 ref->obj_field_put(discovered_offset, value); |
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797 } |
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798 static void set_discovered_raw(oop ref, oop value) { |
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799 ref->obj_field_put_raw(discovered_offset, value); |
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800 } |
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801 static HeapWord* discovered_addr(oop ref) { |
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802 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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803 } |
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804 // Accessors for statics |
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805 static oop pending_list_lock(); |
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806 static oop pending_list(); |
| 0 | 807 |
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808 static HeapWord* pending_list_addr(); |
| 0 | 809 }; |
| 810 | |
| 811 | |
| 812 // Interface to java.lang.ref.SoftReference objects | |
| 813 | |
| 814 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 815 public: | |
| 816 enum { | |
| 817 // The timestamp is a long field and may need to be adjusted for alignment. | |
|
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818 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 819 }; |
| 820 enum { | |
| 821 hc_static_clock_offset = 0 | |
| 822 }; | |
| 823 | |
| 824 static int timestamp_offset; | |
| 825 static int static_clock_offset; | |
| 826 | |
| 827 // Accessors | |
| 828 static jlong timestamp(oop ref); | |
| 829 | |
| 830 // Accessors for statics | |
| 831 static jlong clock(); | |
| 832 static void set_clock(jlong value); | |
| 833 }; | |
| 834 | |
| 835 | |
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836 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 837 |
| 3938 | 838 #define METHODHANDLE_INJECTED_FIELDS(macro) \ |
| 839 macro(java_lang_invoke_MethodHandle, vmentry, intptr_signature, false) \ | |
| 840 macro(java_lang_invoke_MethodHandle, vmtarget, object_signature, true) | |
| 841 | |
| 710 | 842 class MethodHandleEntry; |
| 843 | |
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844 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 845 friend class JavaClasses; |
| 846 | |
| 847 private: | |
| 3938 | 848 static int _vmentry_offset; // assembly code trampoline for MH |
| 849 static int _vmtarget_offset; // class-specific target reference | |
| 710 | 850 static int _type_offset; // the MethodType of this MH |
| 851 | |
| 852 static void compute_offsets(); | |
| 853 | |
| 854 public: | |
| 855 // Accessors | |
| 856 static oop type(oop mh); | |
| 857 static void set_type(oop mh, oop mtype); | |
| 858 | |
| 859 static oop vmtarget(oop mh); | |
| 860 static void set_vmtarget(oop mh, oop target); | |
| 861 | |
| 862 static MethodHandleEntry* vmentry(oop mh); | |
| 863 static void set_vmentry(oop mh, MethodHandleEntry* data); | |
| 864 | |
| 865 static int vmslots(oop mh); | |
| 866 | |
| 867 // Testers | |
| 868 static bool is_subclass(klassOop klass) { | |
| 869 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
| 870 } | |
| 871 static bool is_instance(oop obj) { | |
| 872 return obj != NULL && is_subclass(obj->klass()); | |
| 873 } | |
| 874 | |
| 875 // Accessors for code generation: | |
| 876 static int type_offset_in_bytes() { return _type_offset; } | |
| 877 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 878 static int vmentry_offset_in_bytes() { return _vmentry_offset; } | |
| 879 }; | |
| 880 | |
| 3938 | 881 #define DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \ |
| 882 macro(java_lang_invoke_DirectMethodHandle, vmindex, int_signature, true) | |
| 883 | |
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884 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 885 friend class JavaClasses; |
| 886 | |
| 887 private: | |
| 888 static int _vmindex_offset; // negative or vtable idx or itable idx | |
| 889 static void compute_offsets(); | |
| 890 | |
| 891 public: | |
| 892 // Accessors | |
| 893 static int vmindex(oop mh); | |
| 894 static void set_vmindex(oop mh, int index); | |
| 895 | |
| 896 // Testers | |
| 897 static bool is_subclass(klassOop klass) { | |
| 898 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); | |
| 899 } | |
| 900 static bool is_instance(oop obj) { | |
| 901 return obj != NULL && is_subclass(obj->klass()); | |
| 902 } | |
| 903 | |
| 904 // Accessors for code generation: | |
| 905 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 906 }; | |
| 907 | |
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908 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 909 friend class JavaClasses; |
| 910 | |
| 911 private: | |
| 912 static int _argument_offset; // argument value bound into this MH | |
| 913 static int _vmargslot_offset; // relevant argument slot (<= vmslots) | |
| 914 static void compute_offsets(); | |
| 915 | |
| 916 public: | |
| 917 static oop argument(oop mh); | |
| 918 static void set_argument(oop mh, oop ref); | |
| 919 | |
| 920 static jint vmargslot(oop mh); | |
| 921 static void set_vmargslot(oop mh, jint slot); | |
| 922 | |
| 923 // Testers | |
| 924 static bool is_subclass(klassOop klass) { | |
| 925 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass()); | |
| 926 } | |
| 927 static bool is_instance(oop obj) { | |
| 928 return obj != NULL && is_subclass(obj->klass()); | |
| 929 } | |
| 930 | |
| 931 static int argument_offset_in_bytes() { return _argument_offset; } | |
| 932 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; } | |
| 933 }; | |
| 934 | |
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935 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle { |
| 710 | 936 friend class JavaClasses; |
| 937 | |
| 938 private: | |
| 939 static int _conversion_offset; // type of conversion to apply | |
| 940 static void compute_offsets(); | |
| 941 | |
| 942 public: | |
| 943 static int conversion(oop mh); | |
| 944 static void set_conversion(oop mh, int conv); | |
| 945 | |
| 946 // Testers | |
| 947 static bool is_subclass(klassOop klass) { | |
| 948 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass()); | |
| 949 } | |
| 950 static bool is_instance(oop obj) { | |
| 951 return obj != NULL && is_subclass(obj->klass()); | |
| 952 } | |
| 953 | |
| 954 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 955 enum { | |
| 956 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype | |
|
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957 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T) |
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958 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument |
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959 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another |
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960 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive |
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961 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper |
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962 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg) |
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963 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg) |
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964 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS) |
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965 OP_DROP_ARGS = 0x9, // remove one or more argument slots |
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966 OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function |
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967 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size) |
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968 OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result |
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969 //OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists |
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970 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration |
| 710 | 971 |
| 972 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field | |
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973 CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below |
| 710 | 974 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use |
| 975 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK | |
| 976 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK | |
| 977 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed) | |
| 978 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed) | |
| 979 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change | |
| 980 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1 | |
| 981 }; | |
| 982 | |
| 983 static int conversion_offset_in_bytes() { return _conversion_offset; } | |
| 984 }; | |
| 985 | |
| 986 | |
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987 // A simple class that maintains an invocation count |
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988 class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle { |
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989 friend class JavaClasses; |
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990 |
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991 private: |
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992 static int _vmcount_offset; |
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993 static void compute_offsets(); |
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994 |
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995 public: |
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996 // Accessors |
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997 static int vmcount(oop mh); |
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998 static void set_vmcount(oop mh, int count); |
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999 |
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1000 // Testers |
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1001 static bool is_subclass(klassOop klass) { |
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1002 return SystemDictionary::CountingMethodHandle_klass() != NULL && |
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1003 Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass()); |
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1004 } |
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1005 static bool is_instance(oop obj) { |
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1006 return obj != NULL && is_subclass(obj->klass()); |
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1007 } |
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1008 |
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1009 // Accessors for code generation: |
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1010 static int vmcount_offset_in_bytes() { return _vmcount_offset; } |
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1011 }; |
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1012 |
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1013 |
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1014 |
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1015 // Interface to java.lang.invoke.MemberName objects |
| 710 | 1016 // (These are a private interface for Java code to query the class hierarchy.) |
| 1017 | |
| 3938 | 1018 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
| 1019 macro(java_lang_invoke_MemberName, vmtarget, object_signature, true) | |
| 1020 | |
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1021 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 1022 friend class JavaClasses; |
| 1023 | |
| 1024 private: | |
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1025 // From java.lang.invoke.MemberName: |
| 710 | 1026 // private Class<?> clazz; // class in which the method is defined |
| 1027 // private String name; // may be null if not yet materialized | |
| 1028 // private Object type; // may be null if not yet materialized | |
| 1029 // private int flags; // modifier bits; see reflect.Modifier | |
| 1030 // private Object vmtarget; // VM-specific target value | |
| 1031 // private int vmindex; // method index within class or interface | |
| 1032 static int _clazz_offset; | |
| 1033 static int _name_offset; | |
| 1034 static int _type_offset; | |
| 1035 static int _flags_offset; | |
| 1036 static int _vmtarget_offset; | |
| 1037 static int _vmindex_offset; | |
| 1038 | |
| 1039 static void compute_offsets(); | |
| 1040 | |
| 1041 public: | |
| 1042 // Accessors | |
| 1043 static oop clazz(oop mname); | |
| 1044 static void set_clazz(oop mname, oop clazz); | |
| 1045 | |
| 1046 static oop type(oop mname); | |
| 1047 static void set_type(oop mname, oop type); | |
| 1048 | |
| 1049 static oop name(oop mname); | |
| 1050 static void set_name(oop mname, oop name); | |
| 1051 | |
| 1052 static int flags(oop mname); | |
| 1053 static void set_flags(oop mname, int flags); | |
| 1054 | |
| 1055 static int modifiers(oop mname) { return (u2) flags(mname); } | |
| 1056 static void set_modifiers(oop mname, int mods) | |
| 1057 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); } | |
| 1058 | |
| 1059 static oop vmtarget(oop mname); | |
| 1060 static void set_vmtarget(oop mname, oop target); | |
| 1061 | |
| 1062 static int vmindex(oop mname); | |
| 1063 static void set_vmindex(oop mname, int index); | |
| 1064 | |
| 1065 // Testers | |
| 1066 static bool is_subclass(klassOop klass) { | |
| 1067 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
| 1068 } | |
| 1069 static bool is_instance(oop obj) { | |
| 1070 return obj != NULL && is_subclass(obj->klass()); | |
| 1071 } | |
| 1072 | |
| 1073 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 1074 enum { | |
| 1075 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 1076 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 1077 MN_IS_FIELD = 0x00040000, // field | |
| 1078 MN_IS_TYPE = 0x00080000, // nested type | |
| 1079 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers | |
| 1080 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers | |
| 1081 VM_INDEX_UNINITIALIZED = -99 | |
| 1082 }; | |
| 1083 | |
| 1084 // Accessors for code generation: | |
| 1085 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1086 static int type_offset_in_bytes() { return _type_offset; } | |
| 1087 static int name_offset_in_bytes() { return _name_offset; } | |
| 1088 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1089 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1090 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1091 }; | |
| 1092 | |
| 1093 | |
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1094 // Interface to java.lang.invoke.MethodType objects |
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1096 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1097 friend class JavaClasses; |
| 1098 | |
| 1099 private: | |
| 1100 static int _rtype_offset; | |
| 1101 static int _ptypes_offset; | |
| 1102 static int _form_offset; | |
| 1103 | |
| 1104 static void compute_offsets(); | |
| 1105 | |
| 1106 public: | |
| 1107 // Accessors | |
| 1108 static oop rtype(oop mt); | |
| 1109 static objArrayOop ptypes(oop mt); | |
| 1110 static oop form(oop mt); | |
| 1111 | |
| 1112 static oop ptype(oop mt, int index); | |
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1113 static int ptype_count(oop mt); |
| 710 | 1114 |
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1115 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1116 static void print_signature(oop mt, outputStream* st); |
| 1117 | |
| 1118 static bool is_instance(oop obj) { | |
| 1119 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1120 } | |
| 1121 | |
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1122 static bool equals(oop mt1, oop mt2); |
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1123 |
| 710 | 1124 // Accessors for code generation: |
| 1125 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1126 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1127 static int form_offset_in_bytes() { return _form_offset; } | |
| 1128 }; | |
| 1129 | |
| 3938 | 1130 #define METHODTYPEFORM_INJECTED_FIELDS(macro) \ |
| 1131 macro(java_lang_invoke_MethodTypeForm, vmslots, int_signature, true) \ | |
| 1132 macro(java_lang_invoke_MethodTypeForm, vmlayout, object_signature, true) | |
| 1133 | |
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1134 class java_lang_invoke_MethodTypeForm: AllStatic { |
| 710 | 1135 friend class JavaClasses; |
| 1136 | |
| 1137 private: | |
| 1138 static int _vmslots_offset; // number of argument slots needed | |
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1139 static int _vmlayout_offset; // object describing internal calling sequence |
| 710 | 1140 static int _erasedType_offset; // erasedType = canonical MethodType |
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1141 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric |
| 710 | 1142 |
| 1143 static void compute_offsets(); | |
| 1144 | |
| 1145 public: | |
| 1146 // Accessors | |
| 1147 static int vmslots(oop mtform); | |
| 3938 | 1148 static void set_vmslots(oop mtform, int vmslots); |
| 1149 | |
| 710 | 1150 static oop erasedType(oop mtform); |
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1151 static oop genericInvoker(oop mtform); |
| 710 | 1152 |
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1153 static oop vmlayout(oop mtform); |
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1154 static oop init_vmlayout(oop mtform, oop cookie); |
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1155 |
| 710 | 1156 // Accessors for code generation: |
| 1157 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
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1158 static int vmlayout_offset_in_bytes() { return _vmlayout_offset; } |
| 710 | 1159 static int erasedType_offset_in_bytes() { return _erasedType_offset; } |
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1160 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; } |
| 710 | 1161 }; |
| 1162 | |
| 1163 | |
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1164 // Interface to java.lang.invoke.CallSite objects |
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1165 |
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1166 class java_lang_invoke_CallSite: AllStatic { |
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1167 friend class JavaClasses; |
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1168 |
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1169 private: |
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1170 static int _target_offset; |
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1171 |
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1172 static void compute_offsets(); |
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1173 |
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1174 public: |
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1175 // Accessors |
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1176 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1177 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1178 |
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1179 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1180 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1181 |
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1182 // Testers |
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1183 static bool is_subclass(klassOop klass) { |
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1184 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1185 } |
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1186 static bool is_instance(oop obj) { |
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1187 return obj != NULL && is_subclass(obj->klass()); |
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1188 } |
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1189 |
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1190 // Accessors for code generation: |
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1191 static int target_offset_in_bytes() { return _target_offset; } |
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1192 }; |
| 710 | 1193 |
| 1194 | |
| 0 | 1195 // Interface to java.security.AccessControlContext objects |
| 1196 | |
| 1197 class java_security_AccessControlContext: AllStatic { | |
| 1198 private: | |
| 1199 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1200 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1201 static int _context_offset; | |
| 1202 static int _privilegedContext_offset; | |
| 1203 static int _isPrivileged_offset; | |
| 1204 | |
| 1205 static void compute_offsets(); | |
| 1206 public: | |
| 1207 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1208 | |
| 1209 // Debugging/initialization | |
| 1210 friend class JavaClasses; | |
| 1211 }; | |
| 1212 | |
| 1213 | |
| 1214 // Interface to java.lang.ClassLoader objects | |
| 1215 | |
| 1216 class java_lang_ClassLoader : AllStatic { | |
| 1217 private: | |
| 1218 enum { | |
| 1219 hc_parent_offset = 0 | |
| 1220 }; | |
| 1221 | |
| 3938 | 1222 static bool offsets_computed; |
| 0 | 1223 static int parent_offset; |
| 3938 | 1224 static int parallelCapable_offset; |
| 1225 | |
| 1226 static void compute_offsets(); | |
| 0 | 1227 |
| 1228 public: | |
| 1229 static oop parent(oop loader); | |
| 1230 | |
| 3938 | 1231 // Support for parallelCapable field |
| 1232 static bool parallelCapable(oop the_class_mirror); | |
| 1233 | |
| 0 | 1234 static bool is_trusted_loader(oop loader); |
| 1235 | |
| 1236 // Fix for 4474172 | |
| 1237 static oop non_reflection_class_loader(oop loader); | |
| 1238 | |
| 1239 // Debugging | |
| 1240 friend class JavaClasses; | |
| 1241 }; | |
| 1242 | |
| 1243 | |
| 1244 // Interface to java.lang.System objects | |
| 1245 | |
| 1246 class java_lang_System : AllStatic { | |
| 1247 private: | |
| 1248 enum { | |
| 1249 hc_static_in_offset = 0, | |
| 1250 hc_static_out_offset = 1, | |
| 1251 hc_static_err_offset = 2 | |
| 1252 }; | |
| 1253 | |
| 1254 static int static_in_offset; | |
| 1255 static int static_out_offset; | |
| 1256 static int static_err_offset; | |
| 1257 | |
| 1258 public: | |
| 1259 static int in_offset_in_bytes(); | |
| 1260 static int out_offset_in_bytes(); | |
| 1261 static int err_offset_in_bytes(); | |
| 1262 | |
| 1263 // Debugging | |
| 1264 friend class JavaClasses; | |
| 1265 }; | |
| 1266 | |
| 1267 | |
| 1268 // Interface to java.lang.StackTraceElement objects | |
| 1269 | |
| 1270 class java_lang_StackTraceElement: AllStatic { | |
| 1271 private: | |
| 1272 enum { | |
| 1273 hc_declaringClass_offset = 0, | |
| 1274 hc_methodName_offset = 1, | |
| 1275 hc_fileName_offset = 2, | |
| 1276 hc_lineNumber_offset = 3 | |
| 1277 }; | |
| 1278 | |
| 1279 static int declaringClass_offset; | |
| 1280 static int methodName_offset; | |
| 1281 static int fileName_offset; | |
| 1282 static int lineNumber_offset; | |
| 1283 | |
| 1284 public: | |
| 1285 // Setters | |
| 1286 static void set_declaringClass(oop element, oop value); | |
| 1287 static void set_methodName(oop element, oop value); | |
| 1288 static void set_fileName(oop element, oop value); | |
| 1289 static void set_lineNumber(oop element, int value); | |
| 1290 | |
| 1291 // Create an instance of StackTraceElement | |
| 1292 static oop create(methodHandle m, int bci, TRAPS); | |
| 1293 | |
| 1294 // Debugging | |
| 1295 friend class JavaClasses; | |
| 1296 }; | |
| 1297 | |
| 1298 | |
| 1299 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1300 | |
| 1301 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1302 private: | |
| 1303 enum { | |
| 1304 hc_classes_offset, | |
| 1305 hc_classEnabled_offset, | |
| 1306 hc_packages_offset, | |
| 1307 hc_packageEnabled_offset, | |
| 1308 hc_deflt_offset | |
| 1309 }; | |
| 1310 | |
| 1311 static int classes_offset; | |
| 1312 static int classEnabled_offset; | |
| 1313 static int packages_offset; | |
| 1314 static int packageEnabled_offset; | |
| 1315 static int deflt_offset; | |
| 1316 | |
| 1317 public: | |
| 1318 // Setters | |
| 1319 static void set_classes(oop obj, oop val); | |
| 1320 static void set_classEnabled(oop obj, oop val); | |
| 1321 static void set_packages(oop obj, oop val); | |
| 1322 static void set_packageEnabled(oop obj, oop val); | |
| 1323 static void set_deflt(oop obj, bool val); | |
| 1324 // Debugging | |
| 1325 friend class JavaClasses; | |
| 1326 }; | |
| 1327 | |
| 1328 | |
| 1329 class java_nio_Buffer: AllStatic { | |
| 1330 private: | |
| 1331 static int _limit_offset; | |
| 1332 | |
| 1333 public: | |
| 1334 static int limit_offset(); | |
| 1335 static void compute_offsets(); | |
| 1336 }; | |
| 1337 | |
| 1338 class sun_misc_AtomicLongCSImpl: AllStatic { | |
| 1339 private: | |
| 1340 static int _value_offset; | |
| 1341 | |
| 1342 public: | |
| 1343 static int value_offset(); | |
| 1344 static void compute_offsets(); | |
| 1345 }; | |
| 1346 | |
| 1347 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1348 private: | |
| 1349 static int _owner_offset; | |
| 1350 public: | |
| 1351 static void initialize(TRAPS); | |
| 1352 static oop get_owner_threadObj(oop obj); | |
| 1353 }; | |
| 1354 | |
| 3938 | 1355 // Use to declare fields that need to be injected into Java classes |
| 1356 // for the JVM to use. The name_index and signature_index are | |
| 1357 // declared in vmSymbols. The may_be_java flag is used to declare | |
| 1358 // fields that might already exist in Java but should be injected if | |
| 1359 // they don't. Otherwise the field is unconditionally injected and | |
| 1360 // the JVM uses the injected one. This is to ensure that name | |
| 1361 // collisions don't occur. In general may_be_java should be false | |
| 1362 // unless there's a good reason. | |
| 1363 | |
| 1364 class InjectedField { | |
| 1365 public: | |
| 1366 const SystemDictionary::WKID klass_id; | |
| 1367 const vmSymbols::SID name_index; | |
| 1368 const vmSymbols::SID signature_index; | |
| 1369 const bool may_be_java; | |
| 1370 | |
| 1371 | |
| 1372 klassOop klass() const { return SystemDictionary::well_known_klass(klass_id); } | |
| 1373 Symbol* name() const { return lookup_symbol(name_index); } | |
| 1374 Symbol* signature() const { return lookup_symbol(signature_index); } | |
| 1375 | |
| 1376 int compute_offset(); | |
| 1377 | |
| 1378 // Find the Symbol for this index | |
| 1379 static Symbol* lookup_symbol(int symbol_index) { | |
| 1380 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
| 1381 } | |
| 1382 }; | |
| 1383 | |
| 1384 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
| 1385 klass##_##name##_enum, | |
| 1386 | |
| 1387 #define ALL_INJECTED_FIELDS(macro) \ | |
| 1388 CLASS_INJECTED_FIELDS(macro) \ | |
| 1389 METHODHANDLE_INJECTED_FIELDS(macro) \ | |
| 1390 DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \ | |
| 1391 MEMBERNAME_INJECTED_FIELDS(macro) \ | |
| 1392 METHODTYPEFORM_INJECTED_FIELDS(macro) | |
| 1393 | |
| 0 | 1394 // Interface to hard-coded offset checking |
| 1395 | |
| 1396 class JavaClasses : AllStatic { | |
| 1397 private: | |
| 3938 | 1398 |
| 1399 static InjectedField _injected_fields[]; | |
| 1400 | |
| 0 | 1401 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 1402 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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1403 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 3938 | 1404 |
| 0 | 1405 public: |
| 3938 | 1406 enum InjectedFieldID { |
| 1407 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
| 1408 MAX_enum | |
| 1409 }; | |
| 1410 | |
| 1411 static int compute_injected_offset(InjectedFieldID id); | |
| 1412 | |
| 0 | 1413 static void compute_hard_coded_offsets(); |
| 1414 static void compute_offsets(); | |
| 1415 static void check_offsets() PRODUCT_RETURN; | |
| 3938 | 1416 |
| 1417 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
| 0 | 1418 }; |
| 1972 | 1419 |
| 3938 | 1420 #undef DECLARE_INJECTED_FIELD_ENUM |
| 1421 | |
| 1972 | 1422 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |