Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/javaClasses.hpp @ 3932:b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
Reviewed-by: jrose, never
| author | twisti |
|---|---|
| date | Thu, 08 Sep 2011 05:11:31 -0700 |
| parents | c26de9aef2ed |
| children | e6b1331a51d2 |
| rev | line source |
|---|---|
| 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 | |
| 159 class java_lang_Class : AllStatic { | |
| 160 friend class VMStructs; | |
| 161 private: | |
| 162 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 163 | |
| 164 enum { | |
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165 hc_number_of_fake_oop_fields = 3, |
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166 hc_number_of_fake_int_fields = 2 |
| 0 | 167 }; |
| 168 | |
| 169 static int klass_offset; | |
| 170 static int resolved_constructor_offset; | |
| 171 static int array_klass_offset; | |
| 172 static int number_of_fake_oop_fields; | |
| 173 | |
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174 static int oop_size_offset; |
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175 static int static_oop_field_count_offset; |
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176 |
| 0 | 177 static void compute_offsets(); |
| 178 static bool offsets_computed; | |
| 179 static int classRedefinedCount_offset; | |
| 514 | 180 static int parallelCapable_offset; |
| 0 | 181 |
| 182 public: | |
| 183 // Instance creation | |
| 184 static oop create_mirror(KlassHandle k, TRAPS); | |
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185 static void fixup_mirror(KlassHandle k, TRAPS); |
| 0 | 186 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
| 187 // Conversion | |
| 188 static klassOop as_klassOop(oop java_class); | |
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189 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
| 710 | 190 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
| 191 klassOop refk_oop = NULL; | |
| 192 BasicType result = as_BasicType(java_class, &refk_oop); | |
| 193 (*reference_klass) = KlassHandle(refk_oop); | |
| 194 return result; | |
| 195 } | |
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196 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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197 static void print_signature(oop java_class, outputStream *st); |
| 0 | 198 // Testing |
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199 static bool is_instance(oop obj) { |
| 1142 | 200 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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201 } |
| 0 | 202 static bool is_primitive(oop java_class); |
| 203 static BasicType primitive_type(oop java_class); | |
| 204 static oop primitive_mirror(BasicType t); | |
| 205 // JVM_NewInstance support | |
| 206 static methodOop resolved_constructor(oop java_class); | |
| 207 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
| 208 // JVM_NewArray support | |
| 209 static klassOop array_klass(oop java_class); | |
| 210 static void set_array_klass(oop java_class, klassOop klass); | |
| 211 // compiler support for class operations | |
| 212 static int klass_offset_in_bytes() { return klass_offset; } | |
| 213 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } | |
| 214 static int array_klass_offset_in_bytes() { return array_klass_offset; } | |
| 215 // Support for classRedefinedCount field | |
| 216 static int classRedefinedCount(oop the_class_mirror); | |
| 217 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
| 514 | 218 // Support for parallelCapable field |
| 219 static bool parallelCapable(oop the_class_mirror); | |
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220 |
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221 static int oop_size(oop java_class); |
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222 static void set_oop_size(oop java_class, int size); |
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223 static int static_oop_field_count(oop java_class); |
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224 static void set_static_oop_field_count(oop java_class, int size); |
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225 |
| 0 | 226 // Debugging |
| 227 friend class JavaClasses; | |
| 228 friend class instanceKlass; // verification code accesses offsets | |
| 229 friend class ClassFileParser; // access to number_of_fake_fields | |
| 230 }; | |
| 231 | |
| 232 // Interface to java.lang.Thread objects | |
| 233 | |
| 234 class java_lang_Thread : AllStatic { | |
| 235 private: | |
| 236 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 237 // so we compute the offsets at startup rather than hard-wiring them. | |
| 238 static int _name_offset; | |
| 239 static int _group_offset; | |
| 240 static int _contextClassLoader_offset; | |
| 241 static int _inheritedAccessControlContext_offset; | |
| 242 static int _priority_offset; | |
| 243 static int _eetop_offset; | |
| 244 static int _daemon_offset; | |
| 245 static int _stillborn_offset; | |
| 246 static int _stackSize_offset; | |
| 247 static int _tid_offset; | |
| 248 static int _thread_status_offset; | |
| 249 static int _park_blocker_offset; | |
| 250 static int _park_event_offset ; | |
| 251 | |
| 252 static void compute_offsets(); | |
| 253 | |
| 254 public: | |
| 255 // Instance creation | |
| 256 static oop create(); | |
| 257 // Returns the JavaThread associated with the thread obj | |
| 258 static JavaThread* thread(oop java_thread); | |
| 259 // Set JavaThread for instance | |
| 260 static void set_thread(oop java_thread, JavaThread* thread); | |
| 261 // Name | |
| 262 static typeArrayOop name(oop java_thread); | |
| 263 static void set_name(oop java_thread, typeArrayOop name); | |
| 264 // Priority | |
| 265 static ThreadPriority priority(oop java_thread); | |
| 266 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 267 // Thread group | |
| 268 static oop threadGroup(oop java_thread); | |
| 269 // Stillborn | |
| 270 static bool is_stillborn(oop java_thread); | |
| 271 static void set_stillborn(oop java_thread); | |
| 272 // Alive (NOTE: this is not really a field, but provides the correct | |
| 273 // definition without doing a Java call) | |
| 274 static bool is_alive(oop java_thread); | |
| 275 // Daemon | |
| 276 static bool is_daemon(oop java_thread); | |
| 277 static void set_daemon(oop java_thread); | |
| 278 // Context ClassLoader | |
| 279 static oop context_class_loader(oop java_thread); | |
| 280 // Control context | |
| 281 static oop inherited_access_control_context(oop java_thread); | |
| 282 // Stack size hint | |
| 283 static jlong stackSize(oop java_thread); | |
| 284 // Thread ID | |
| 285 static jlong thread_id(oop java_thread); | |
| 286 | |
| 287 // Blocker object responsible for thread parking | |
| 288 static oop park_blocker(oop java_thread); | |
| 289 | |
| 290 // Pointer to type-stable park handler, encoded as jlong. | |
| 291 // Should be set when apparently null | |
| 292 // For details, see unsafe.cpp Unsafe_Unpark | |
| 293 static jlong park_event(oop java_thread); | |
| 294 static bool set_park_event(oop java_thread, jlong ptr); | |
| 295 | |
| 296 // Java Thread Status for JVMTI and M&M use. | |
| 297 // This thread status info is saved in threadStatus field of | |
| 298 // java.lang.Thread java class. | |
| 299 enum ThreadStatus { | |
| 300 NEW = 0, | |
| 301 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 302 JVMTI_THREAD_STATE_RUNNABLE, | |
| 303 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 304 JVMTI_THREAD_STATE_WAITING + | |
| 305 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 306 JVMTI_THREAD_STATE_SLEEPING, | |
| 307 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 308 JVMTI_THREAD_STATE_WAITING + | |
| 309 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 310 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 311 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 312 JVMTI_THREAD_STATE_WAITING + | |
| 313 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 314 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 315 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 316 JVMTI_THREAD_STATE_WAITING + | |
| 317 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 318 JVMTI_THREAD_STATE_PARKED, | |
| 319 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 320 JVMTI_THREAD_STATE_WAITING + | |
| 321 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 322 JVMTI_THREAD_STATE_PARKED, | |
| 323 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 324 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 325 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 326 }; | |
| 327 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 328 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 329 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 330 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 331 | |
| 332 static const char* thread_status_name(oop java_thread_oop); | |
| 333 | |
| 334 // Debugging | |
| 335 friend class JavaClasses; | |
| 336 }; | |
| 337 | |
| 338 // Interface to java.lang.ThreadGroup objects | |
| 339 | |
| 340 class java_lang_ThreadGroup : AllStatic { | |
| 341 private: | |
| 342 static int _parent_offset; | |
| 343 static int _name_offset; | |
| 344 static int _threads_offset; | |
| 345 static int _groups_offset; | |
| 346 static int _maxPriority_offset; | |
| 347 static int _destroyed_offset; | |
| 348 static int _daemon_offset; | |
| 349 static int _vmAllowSuspension_offset; | |
| 350 static int _nthreads_offset; | |
| 351 static int _ngroups_offset; | |
| 352 | |
| 353 static void compute_offsets(); | |
| 354 | |
| 355 public: | |
| 356 // parent ThreadGroup | |
| 357 static oop parent(oop java_thread_group); | |
| 358 // name | |
| 359 static typeArrayOop name(oop java_thread_group); | |
| 360 // ("name as oop" accessor is not necessary) | |
| 361 // Number of threads in group | |
| 362 static int nthreads(oop java_thread_group); | |
| 363 // threads | |
| 364 static objArrayOop threads(oop java_thread_group); | |
| 365 // Number of threads in group | |
| 366 static int ngroups(oop java_thread_group); | |
| 367 // groups | |
| 368 static objArrayOop groups(oop java_thread_group); | |
| 369 // maxPriority in group | |
| 370 static ThreadPriority maxPriority(oop java_thread_group); | |
| 371 // Destroyed | |
| 372 static bool is_destroyed(oop java_thread_group); | |
| 373 // Daemon | |
| 374 static bool is_daemon(oop java_thread_group); | |
| 375 // vmAllowSuspension | |
| 376 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 377 // Debugging | |
| 378 friend class JavaClasses; | |
| 379 }; | |
| 380 | |
| 381 | |
| 382 | |
| 383 // Interface to java.lang.Throwable objects | |
| 384 | |
| 385 class java_lang_Throwable: AllStatic { | |
| 386 friend class BacktraceBuilder; | |
| 387 | |
| 388 private: | |
| 389 // Offsets | |
| 390 enum { | |
| 391 hc_backtrace_offset = 0, | |
| 392 hc_detailMessage_offset = 1, | |
| 393 hc_cause_offset = 2, // New since 1.4 | |
| 394 hc_stackTrace_offset = 3 // New since 1.4 | |
| 395 }; | |
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396 enum { |
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397 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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398 }; |
| 0 | 399 // Trace constants |
| 400 enum { | |
| 401 trace_methods_offset = 0, | |
| 402 trace_bcis_offset = 1, | |
| 403 trace_next_offset = 2, | |
| 404 trace_size = 3, | |
| 405 trace_chunk_size = 32 | |
| 406 }; | |
| 407 | |
| 408 static int backtrace_offset; | |
| 409 static int detailMessage_offset; | |
| 410 static int cause_offset; | |
| 411 static int stackTrace_offset; | |
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412 static int static_unassigned_stacktrace_offset; |
| 0 | 413 |
| 414 // Printing | |
| 415 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 416 static void print_to_stream(Handle stream, const char* str); | |
| 417 // StackTrace (programmatic access, new since 1.4) | |
| 418 static void clear_stacktrace(oop throwable); | |
| 419 // No stack trace available | |
| 420 static const char* no_stack_trace_message(); | |
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421 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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422 static void set_stacktrace(oop throwable, oop st_element_array); |
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423 static oop unassigned_stacktrace(); |
| 0 | 424 |
| 425 public: | |
| 426 // Backtrace | |
| 427 static oop backtrace(oop throwable); | |
| 428 static void set_backtrace(oop throwable, oop value); | |
| 429 // Needed by JVMTI to filter out this internal field. | |
| 430 static int get_backtrace_offset() { return backtrace_offset;} | |
| 431 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 432 // Message | |
| 433 static oop message(oop throwable); | |
| 434 static oop message(Handle throwable); | |
| 435 static void set_message(oop throwable, oop value); | |
| 436 // Print stack trace stored in exception by call-back to Java | |
| 437 // Note: this is no longer used in Merlin, but we still suppport | |
| 438 // it for compatibility. | |
| 439 static void print_stack_trace(oop throwable, oop print_stream); | |
| 440 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 441 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 442 static void print_stack_usage(Handle stream); | |
| 443 | |
| 444 // Allocate space for backtrace (created but stack trace not filled in) | |
| 445 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 446 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 447 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 448 // Fill in current stack trace, can cause GC | |
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449 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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450 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 451 // Programmatic access to stack trace |
| 452 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 453 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 454 // Printing | |
| 455 static void print(oop throwable, outputStream* st); | |
| 456 static void print(Handle throwable, outputStream* st); | |
| 457 static void print_stack_trace(oop throwable, outputStream* st); | |
| 458 // Debugging | |
| 459 friend class JavaClasses; | |
| 460 }; | |
| 461 | |
| 462 | |
| 463 // Interface to java.lang.reflect.AccessibleObject objects | |
| 464 | |
| 465 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 466 private: | |
| 467 // Note that to reduce dependencies on the JDK we compute these | |
| 468 // offsets at run-time. | |
| 469 static int override_offset; | |
| 470 | |
| 471 static void compute_offsets(); | |
| 472 | |
| 473 public: | |
| 474 // Accessors | |
| 475 static jboolean override(oop reflect); | |
| 476 static void set_override(oop reflect, jboolean value); | |
| 477 | |
| 478 // Debugging | |
| 479 friend class JavaClasses; | |
| 480 }; | |
| 481 | |
| 482 | |
| 483 // Interface to java.lang.reflect.Method objects | |
| 484 | |
| 485 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 486 private: | |
| 487 // Note that to reduce dependencies on the JDK we compute these | |
| 488 // offsets at run-time. | |
| 489 static int clazz_offset; | |
| 490 static int name_offset; | |
| 491 static int returnType_offset; | |
| 492 static int parameterTypes_offset; | |
| 493 static int exceptionTypes_offset; | |
| 494 static int slot_offset; | |
| 495 static int modifiers_offset; | |
| 496 static int signature_offset; | |
| 497 static int annotations_offset; | |
| 498 static int parameter_annotations_offset; | |
| 499 static int annotation_default_offset; | |
| 500 | |
| 501 static void compute_offsets(); | |
| 502 | |
| 503 public: | |
| 504 // Allocation | |
| 505 static Handle create(TRAPS); | |
| 506 | |
| 507 // Accessors | |
| 508 static oop clazz(oop reflect); | |
| 509 static void set_clazz(oop reflect, oop value); | |
| 510 | |
| 511 static oop name(oop method); | |
| 512 static void set_name(oop method, oop value); | |
| 513 | |
| 514 static oop return_type(oop method); | |
| 515 static void set_return_type(oop method, oop value); | |
| 516 | |
| 517 static oop parameter_types(oop method); | |
| 518 static void set_parameter_types(oop method, oop value); | |
| 519 | |
| 520 static oop exception_types(oop method); | |
| 521 static void set_exception_types(oop method, oop value); | |
| 522 | |
| 523 static int slot(oop reflect); | |
| 524 static void set_slot(oop reflect, int value); | |
| 525 | |
| 526 static int modifiers(oop method); | |
| 527 static void set_modifiers(oop method, int value); | |
| 528 | |
| 529 static bool has_signature_field(); | |
| 530 static oop signature(oop method); | |
| 531 static void set_signature(oop method, oop value); | |
| 532 | |
| 533 static bool has_annotations_field(); | |
| 534 static oop annotations(oop method); | |
| 535 static void set_annotations(oop method, oop value); | |
| 536 | |
| 537 static bool has_parameter_annotations_field(); | |
| 538 static oop parameter_annotations(oop method); | |
| 539 static void set_parameter_annotations(oop method, oop value); | |
| 540 | |
| 541 static bool has_annotation_default_field(); | |
| 542 static oop annotation_default(oop method); | |
| 543 static void set_annotation_default(oop method, oop value); | |
| 544 | |
| 545 // Debugging | |
| 546 friend class JavaClasses; | |
| 547 }; | |
| 548 | |
| 549 | |
| 550 // Interface to java.lang.reflect.Constructor objects | |
| 551 | |
| 552 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 553 private: | |
| 554 // Note that to reduce dependencies on the JDK we compute these | |
| 555 // offsets at run-time. | |
| 556 static int clazz_offset; | |
| 557 static int parameterTypes_offset; | |
| 558 static int exceptionTypes_offset; | |
| 559 static int slot_offset; | |
| 560 static int modifiers_offset; | |
| 561 static int signature_offset; | |
| 562 static int annotations_offset; | |
| 563 static int parameter_annotations_offset; | |
| 564 | |
| 565 static void compute_offsets(); | |
| 566 | |
| 567 public: | |
| 568 // Allocation | |
| 569 static Handle create(TRAPS); | |
| 570 | |
| 571 // Accessors | |
| 572 static oop clazz(oop reflect); | |
| 573 static void set_clazz(oop reflect, oop value); | |
| 574 | |
| 575 static oop parameter_types(oop constructor); | |
| 576 static void set_parameter_types(oop constructor, oop value); | |
| 577 | |
| 578 static oop exception_types(oop constructor); | |
| 579 static void set_exception_types(oop constructor, oop value); | |
| 580 | |
| 581 static int slot(oop reflect); | |
| 582 static void set_slot(oop reflect, int value); | |
| 583 | |
| 584 static int modifiers(oop constructor); | |
| 585 static void set_modifiers(oop constructor, int value); | |
| 586 | |
| 587 static bool has_signature_field(); | |
| 588 static oop signature(oop constructor); | |
| 589 static void set_signature(oop constructor, oop value); | |
| 590 | |
| 591 static bool has_annotations_field(); | |
| 592 static oop annotations(oop constructor); | |
| 593 static void set_annotations(oop constructor, oop value); | |
| 594 | |
| 595 static bool has_parameter_annotations_field(); | |
| 596 static oop parameter_annotations(oop method); | |
| 597 static void set_parameter_annotations(oop method, oop value); | |
| 598 | |
| 599 // Debugging | |
| 600 friend class JavaClasses; | |
| 601 }; | |
| 602 | |
| 603 | |
| 604 // Interface to java.lang.reflect.Field objects | |
| 605 | |
| 606 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 607 private: | |
| 608 // Note that to reduce dependencies on the JDK we compute these | |
| 609 // offsets at run-time. | |
| 610 static int clazz_offset; | |
| 611 static int name_offset; | |
| 612 static int type_offset; | |
| 613 static int slot_offset; | |
| 614 static int modifiers_offset; | |
| 615 static int signature_offset; | |
| 616 static int annotations_offset; | |
| 617 | |
| 618 static void compute_offsets(); | |
| 619 | |
| 620 public: | |
| 621 // Allocation | |
| 622 static Handle create(TRAPS); | |
| 623 | |
| 624 // Accessors | |
| 625 static oop clazz(oop reflect); | |
| 626 static void set_clazz(oop reflect, oop value); | |
| 627 | |
| 628 static oop name(oop field); | |
| 629 static void set_name(oop field, oop value); | |
| 630 | |
| 631 static oop type(oop field); | |
| 632 static void set_type(oop field, oop value); | |
| 633 | |
| 634 static int slot(oop reflect); | |
| 635 static void set_slot(oop reflect, int value); | |
| 636 | |
| 637 static int modifiers(oop field); | |
| 638 static void set_modifiers(oop field, int value); | |
| 639 | |
| 640 static bool has_signature_field(); | |
| 641 static oop signature(oop constructor); | |
| 642 static void set_signature(oop constructor, oop value); | |
| 643 | |
| 644 static bool has_annotations_field(); | |
| 645 static oop annotations(oop constructor); | |
| 646 static void set_annotations(oop constructor, oop value); | |
| 647 | |
| 648 static bool has_parameter_annotations_field(); | |
| 649 static oop parameter_annotations(oop method); | |
| 650 static void set_parameter_annotations(oop method, oop value); | |
| 651 | |
| 652 static bool has_annotation_default_field(); | |
| 653 static oop annotation_default(oop method); | |
| 654 static void set_annotation_default(oop method, oop value); | |
| 655 | |
| 656 // Debugging | |
| 657 friend class JavaClasses; | |
| 658 }; | |
| 659 | |
| 660 // Interface to sun.reflect.ConstantPool objects | |
| 661 class sun_reflect_ConstantPool { | |
| 662 private: | |
| 663 // Note that to reduce dependencies on the JDK we compute these | |
| 664 // offsets at run-time. | |
| 665 static int _cp_oop_offset; | |
| 666 | |
| 667 static void compute_offsets(); | |
| 668 | |
| 669 public: | |
| 670 // Allocation | |
| 671 static Handle create(TRAPS); | |
| 672 | |
| 673 // Accessors | |
| 674 static oop cp_oop(oop reflect); | |
| 675 static void set_cp_oop(oop reflect, oop value); | |
| 676 static int cp_oop_offset() { | |
| 677 return _cp_oop_offset; | |
| 678 } | |
| 679 | |
| 680 // Debugging | |
| 681 friend class JavaClasses; | |
| 682 }; | |
| 683 | |
| 684 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 685 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 686 private: | |
| 687 static int _base_offset; | |
| 688 static void compute_offsets(); | |
| 689 | |
| 690 public: | |
| 691 static int base_offset() { | |
| 692 return _base_offset; | |
| 693 } | |
| 694 | |
| 695 // Debugging | |
| 696 friend class JavaClasses; | |
| 697 }; | |
| 698 | |
| 699 // Interface to java.lang primitive type boxing objects: | |
| 700 // - java.lang.Boolean | |
| 701 // - java.lang.Character | |
| 702 // - java.lang.Float | |
| 703 // - java.lang.Double | |
| 704 // - java.lang.Byte | |
| 705 // - java.lang.Short | |
| 706 // - java.lang.Integer | |
| 707 // - java.lang.Long | |
| 708 | |
| 709 // This could be separated out into 8 individual classes. | |
| 710 | |
| 711 class java_lang_boxing_object: AllStatic { | |
| 712 private: | |
| 713 enum { | |
| 714 hc_value_offset = 0 | |
| 715 }; | |
| 716 static int value_offset; | |
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717 static int long_value_offset; |
| 0 | 718 |
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719 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 720 public: |
| 721 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 722 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 723 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 724 static BasicType get_value(oop box, jvalue* value); | |
| 725 static BasicType set_value(oop box, jvalue* value); | |
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726 static BasicType basic_type(oop box); |
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727 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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728 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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729 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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730 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 731 |
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732 static int value_offset_in_bytes(BasicType type) { |
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733 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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734 value_offset; |
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735 } |
| 0 | 736 |
| 737 // Debugging | |
| 738 friend class JavaClasses; | |
| 739 }; | |
| 740 | |
| 741 | |
| 742 | |
| 743 // Interface to java.lang.ref.Reference objects | |
| 744 | |
| 745 class java_lang_ref_Reference: AllStatic { | |
| 746 public: | |
| 747 enum { | |
| 748 hc_referent_offset = 0, | |
| 749 hc_queue_offset = 1, | |
| 750 hc_next_offset = 2, | |
| 751 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 752 }; | |
| 753 enum { | |
| 754 hc_static_lock_offset = 0, | |
| 755 hc_static_pending_offset = 1 | |
| 756 }; | |
| 757 | |
| 758 static int referent_offset; | |
| 759 static int queue_offset; | |
| 760 static int next_offset; | |
| 761 static int discovered_offset; | |
| 762 static int static_lock_offset; | |
| 763 static int static_pending_offset; | |
| 764 static int number_of_fake_oop_fields; | |
| 765 | |
| 766 // Accessors | |
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767 static oop referent(oop ref) { |
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768 return ref->obj_field(referent_offset); |
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769 } |
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770 static void set_referent(oop ref, oop value) { |
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771 ref->obj_field_put(referent_offset, value); |
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772 } |
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773 static void set_referent_raw(oop ref, oop value) { |
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774 ref->obj_field_put_raw(referent_offset, value); |
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775 } |
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776 static HeapWord* referent_addr(oop ref) { |
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777 return ref->obj_field_addr<HeapWord>(referent_offset); |
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778 } |
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779 static oop next(oop ref) { |
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780 return ref->obj_field(next_offset); |
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781 } |
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782 static void set_next(oop ref, oop value) { |
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783 ref->obj_field_put(next_offset, value); |
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784 } |
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785 static void set_next_raw(oop ref, oop value) { |
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786 ref->obj_field_put_raw(next_offset, value); |
|
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787 } |
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788 static HeapWord* next_addr(oop ref) { |
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789 return ref->obj_field_addr<HeapWord>(next_offset); |
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790 } |
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791 static oop discovered(oop ref) { |
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792 return ref->obj_field(discovered_offset); |
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793 } |
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794 static void set_discovered(oop ref, oop value) { |
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795 ref->obj_field_put(discovered_offset, value); |
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796 } |
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797 static void set_discovered_raw(oop ref, oop value) { |
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798 ref->obj_field_put_raw(discovered_offset, value); |
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799 } |
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800 static HeapWord* discovered_addr(oop ref) { |
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801 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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802 } |
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803 // Accessors for statics |
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804 static oop pending_list_lock(); |
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805 static oop pending_list(); |
| 0 | 806 |
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807 static HeapWord* pending_list_addr(); |
| 0 | 808 }; |
| 809 | |
| 810 | |
| 811 // Interface to java.lang.ref.SoftReference objects | |
| 812 | |
| 813 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 814 public: | |
| 815 enum { | |
| 816 // The timestamp is a long field and may need to be adjusted for alignment. | |
|
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817 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 818 }; |
| 819 enum { | |
| 820 hc_static_clock_offset = 0 | |
| 821 }; | |
| 822 | |
| 823 static int timestamp_offset; | |
| 824 static int static_clock_offset; | |
| 825 | |
| 826 // Accessors | |
| 827 static jlong timestamp(oop ref); | |
| 828 | |
| 829 // Accessors for statics | |
| 830 static jlong clock(); | |
| 831 static void set_clock(jlong value); | |
| 832 }; | |
| 833 | |
| 834 | |
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835 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 836 |
| 837 class MethodHandleEntry; | |
| 838 | |
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839 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 840 friend class JavaClasses; |
| 841 | |
| 842 private: | |
| 843 static int _vmentry_offset; // assembly code trampoline for MH | |
| 844 static int _vmtarget_offset; // class-specific target reference | |
| 845 static int _type_offset; // the MethodType of this MH | |
| 846 static int _vmslots_offset; // OPTIONAL hoisted type.form.vmslots | |
| 847 | |
| 848 static void compute_offsets(); | |
| 849 | |
| 850 public: | |
| 851 // Accessors | |
| 852 static oop type(oop mh); | |
| 853 static void set_type(oop mh, oop mtype); | |
| 854 | |
| 855 static oop vmtarget(oop mh); | |
| 856 static void set_vmtarget(oop mh, oop target); | |
| 857 | |
| 858 static MethodHandleEntry* vmentry(oop mh); | |
| 859 static void set_vmentry(oop mh, MethodHandleEntry* data); | |
| 860 | |
| 861 static int vmslots(oop mh); | |
| 862 static void init_vmslots(oop mh); | |
| 863 static int compute_vmslots(oop mh); | |
| 864 | |
| 865 // Testers | |
| 866 static bool is_subclass(klassOop klass) { | |
| 867 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
| 868 } | |
| 869 static bool is_instance(oop obj) { | |
| 870 return obj != NULL && is_subclass(obj->klass()); | |
| 871 } | |
| 872 | |
| 873 // Accessors for code generation: | |
| 874 static int type_offset_in_bytes() { return _type_offset; } | |
| 875 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 876 static int vmentry_offset_in_bytes() { return _vmentry_offset; } | |
| 877 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
| 878 }; | |
| 879 | |
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880 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 881 friend class JavaClasses; |
| 882 | |
| 883 private: | |
| 884 // _vmtarget_offset; // method or class or interface | |
| 885 static int _vmindex_offset; // negative or vtable idx or itable idx | |
| 886 static void compute_offsets(); | |
| 887 | |
| 888 public: | |
| 889 // Accessors | |
| 890 static int vmindex(oop mh); | |
| 891 static void set_vmindex(oop mh, int index); | |
| 892 | |
| 893 // Testers | |
| 894 static bool is_subclass(klassOop klass) { | |
| 895 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); | |
| 896 } | |
| 897 static bool is_instance(oop obj) { | |
| 898 return obj != NULL && is_subclass(obj->klass()); | |
| 899 } | |
| 900 | |
| 901 // Accessors for code generation: | |
| 902 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 903 }; | |
| 904 | |
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905 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 906 friend class JavaClasses; |
| 907 | |
| 908 private: | |
| 909 static int _argument_offset; // argument value bound into this MH | |
| 910 static int _vmargslot_offset; // relevant argument slot (<= vmslots) | |
| 911 static void compute_offsets(); | |
| 912 | |
| 913 public: | |
| 914 static oop argument(oop mh); | |
| 915 static void set_argument(oop mh, oop ref); | |
| 916 | |
| 917 static jint vmargslot(oop mh); | |
| 918 static void set_vmargslot(oop mh, jint slot); | |
| 919 | |
| 920 // Testers | |
| 921 static bool is_subclass(klassOop klass) { | |
| 922 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass()); | |
| 923 } | |
| 924 static bool is_instance(oop obj) { | |
| 925 return obj != NULL && is_subclass(obj->klass()); | |
| 926 } | |
| 927 | |
| 928 static int argument_offset_in_bytes() { return _argument_offset; } | |
| 929 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; } | |
| 930 }; | |
| 931 | |
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932 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle { |
| 710 | 933 friend class JavaClasses; |
| 934 | |
| 935 private: | |
| 936 static int _conversion_offset; // type of conversion to apply | |
| 937 static void compute_offsets(); | |
| 938 | |
| 939 public: | |
| 940 static int conversion(oop mh); | |
| 941 static void set_conversion(oop mh, int conv); | |
| 942 | |
| 943 // Testers | |
| 944 static bool is_subclass(klassOop klass) { | |
| 945 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass()); | |
| 946 } | |
| 947 static bool is_instance(oop obj) { | |
| 948 return obj != NULL && is_subclass(obj->klass()); | |
| 949 } | |
| 950 | |
| 951 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 952 enum { | |
| 953 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype | |
|
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954 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T) |
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955 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument |
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956 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another |
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957 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive |
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958 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper |
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959 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg) |
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960 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg) |
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961 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS) |
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962 OP_DROP_ARGS = 0x9, // remove one or more argument slots |
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963 OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function |
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964 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size) |
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965 OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result |
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966 //OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists |
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967 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration |
| 710 | 968 |
| 969 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field | |
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970 CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below |
| 710 | 971 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use |
| 972 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK | |
| 973 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK | |
| 974 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed) | |
| 975 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed) | |
| 976 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change | |
| 977 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1 | |
| 978 }; | |
| 979 | |
| 980 static int conversion_offset_in_bytes() { return _conversion_offset; } | |
| 981 }; | |
| 982 | |
| 983 | |
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984 // A simple class that maintains an invocation count |
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985 class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle { |
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986 friend class JavaClasses; |
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987 |
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988 private: |
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989 static int _vmcount_offset; |
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990 static void compute_offsets(); |
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991 |
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992 public: |
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993 // Accessors |
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994 static int vmcount(oop mh); |
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995 static void set_vmcount(oop mh, int count); |
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996 |
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997 // Testers |
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998 static bool is_subclass(klassOop klass) { |
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999 return SystemDictionary::CountingMethodHandle_klass() != NULL && |
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1000 Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass()); |
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1001 } |
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1002 static bool is_instance(oop obj) { |
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1003 return obj != NULL && is_subclass(obj->klass()); |
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1004 } |
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1005 |
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1006 // Accessors for code generation: |
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1007 static int vmcount_offset_in_bytes() { return _vmcount_offset; } |
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1008 }; |
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1009 |
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1010 |
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1011 |
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1012 // Interface to java.lang.invoke.MemberName objects |
| 710 | 1013 // (These are a private interface for Java code to query the class hierarchy.) |
| 1014 | |
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1015 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 1016 friend class JavaClasses; |
| 1017 | |
| 1018 private: | |
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1019 // From java.lang.invoke.MemberName: |
| 710 | 1020 // private Class<?> clazz; // class in which the method is defined |
| 1021 // private String name; // may be null if not yet materialized | |
| 1022 // private Object type; // may be null if not yet materialized | |
| 1023 // private int flags; // modifier bits; see reflect.Modifier | |
| 1024 // private Object vmtarget; // VM-specific target value | |
| 1025 // private int vmindex; // method index within class or interface | |
| 1026 static int _clazz_offset; | |
| 1027 static int _name_offset; | |
| 1028 static int _type_offset; | |
| 1029 static int _flags_offset; | |
| 1030 static int _vmtarget_offset; | |
| 1031 static int _vmindex_offset; | |
| 1032 | |
| 1033 static void compute_offsets(); | |
| 1034 | |
| 1035 public: | |
| 1036 // Accessors | |
| 1037 static oop clazz(oop mname); | |
| 1038 static void set_clazz(oop mname, oop clazz); | |
| 1039 | |
| 1040 static oop type(oop mname); | |
| 1041 static void set_type(oop mname, oop type); | |
| 1042 | |
| 1043 static oop name(oop mname); | |
| 1044 static void set_name(oop mname, oop name); | |
| 1045 | |
| 1046 static int flags(oop mname); | |
| 1047 static void set_flags(oop mname, int flags); | |
| 1048 | |
| 1049 static int modifiers(oop mname) { return (u2) flags(mname); } | |
| 1050 static void set_modifiers(oop mname, int mods) | |
| 1051 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); } | |
| 1052 | |
| 1053 static oop vmtarget(oop mname); | |
| 1054 static void set_vmtarget(oop mname, oop target); | |
| 1055 | |
| 1056 static int vmindex(oop mname); | |
| 1057 static void set_vmindex(oop mname, int index); | |
| 1058 | |
| 1059 // Testers | |
| 1060 static bool is_subclass(klassOop klass) { | |
| 1061 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
| 1062 } | |
| 1063 static bool is_instance(oop obj) { | |
| 1064 return obj != NULL && is_subclass(obj->klass()); | |
| 1065 } | |
| 1066 | |
| 1067 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 1068 enum { | |
| 1069 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 1070 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 1071 MN_IS_FIELD = 0x00040000, // field | |
| 1072 MN_IS_TYPE = 0x00080000, // nested type | |
| 1073 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers | |
| 1074 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers | |
| 1075 VM_INDEX_UNINITIALIZED = -99 | |
| 1076 }; | |
| 1077 | |
| 1078 // Accessors for code generation: | |
| 1079 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1080 static int type_offset_in_bytes() { return _type_offset; } | |
| 1081 static int name_offset_in_bytes() { return _name_offset; } | |
| 1082 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1083 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1084 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1085 }; | |
| 1086 | |
| 1087 | |
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1088 // Interface to java.lang.invoke.MethodType objects |
| 710 | 1089 |
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1090 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1091 friend class JavaClasses; |
| 1092 | |
| 1093 private: | |
| 1094 static int _rtype_offset; | |
| 1095 static int _ptypes_offset; | |
| 1096 static int _form_offset; | |
| 1097 | |
| 1098 static void compute_offsets(); | |
| 1099 | |
| 1100 public: | |
| 1101 // Accessors | |
| 1102 static oop rtype(oop mt); | |
| 1103 static objArrayOop ptypes(oop mt); | |
| 1104 static oop form(oop mt); | |
| 1105 | |
| 1106 static oop ptype(oop mt, int index); | |
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1107 static int ptype_count(oop mt); |
| 710 | 1108 |
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1109 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1110 static void print_signature(oop mt, outputStream* st); |
| 1111 | |
| 1112 static bool is_instance(oop obj) { | |
| 1113 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1114 } | |
| 1115 | |
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1116 static bool equals(oop mt1, oop mt2); |
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1117 |
| 710 | 1118 // Accessors for code generation: |
| 1119 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1120 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1121 static int form_offset_in_bytes() { return _form_offset; } | |
| 1122 }; | |
| 1123 | |
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1124 class java_lang_invoke_MethodTypeForm: AllStatic { |
| 710 | 1125 friend class JavaClasses; |
| 1126 | |
| 1127 private: | |
| 1128 static int _vmslots_offset; // number of argument slots needed | |
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1129 static int _vmlayout_offset; // object describing internal calling sequence |
| 710 | 1130 static int _erasedType_offset; // erasedType = canonical MethodType |
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1131 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric |
| 710 | 1132 |
| 1133 static void compute_offsets(); | |
| 1134 | |
| 1135 public: | |
| 1136 // Accessors | |
| 1137 static int vmslots(oop mtform); | |
| 1138 static oop erasedType(oop mtform); | |
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1139 static oop genericInvoker(oop mtform); |
| 710 | 1140 |
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1141 static oop vmlayout(oop mtform); |
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1142 static oop init_vmlayout(oop mtform, oop cookie); |
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1143 |
| 710 | 1144 // Accessors for code generation: |
| 1145 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
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1146 static int vmlayout_offset_in_bytes() { return _vmlayout_offset; } |
| 710 | 1147 static int erasedType_offset_in_bytes() { return _erasedType_offset; } |
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1148 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; } |
| 710 | 1149 }; |
| 1150 | |
| 1151 | |
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1152 // Interface to java.lang.invoke.CallSite objects |
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1153 |
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1154 class java_lang_invoke_CallSite: AllStatic { |
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1155 friend class JavaClasses; |
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1156 |
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1157 private: |
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1158 static int _target_offset; |
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1159 static int _caller_method_offset; |
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1160 static int _caller_bci_offset; |
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1161 |
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1162 static void compute_offsets(); |
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1163 |
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1164 public: |
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1165 // Accessors |
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1166 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1167 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1168 |
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1169 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1170 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1171 |
|
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1172 static oop caller_method(oop site); |
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1173 static void set_caller_method(oop site, oop ref); |
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1174 |
|
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1175 static jint caller_bci(oop site); |
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1176 static void set_caller_bci(oop site, jint bci); |
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1177 |
|
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1178 // Testers |
|
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1179 static bool is_subclass(klassOop klass) { |
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1180 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1181 } |
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1182 static bool is_instance(oop obj) { |
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1183 return obj != NULL && is_subclass(obj->klass()); |
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1184 } |
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1185 |
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1186 // Accessors for code generation: |
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1187 static int target_offset_in_bytes() { return _target_offset; } |
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1188 static int caller_method_offset_in_bytes() { return _caller_method_offset; } |
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1189 static int caller_bci_offset_in_bytes() { return _caller_bci_offset; } |
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1190 }; |
| 710 | 1191 |
| 1192 | |
| 0 | 1193 // Interface to java.security.AccessControlContext objects |
| 1194 | |
| 1195 class java_security_AccessControlContext: AllStatic { | |
| 1196 private: | |
| 1197 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1198 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1199 static int _context_offset; | |
| 1200 static int _privilegedContext_offset; | |
| 1201 static int _isPrivileged_offset; | |
| 1202 | |
| 1203 static void compute_offsets(); | |
| 1204 public: | |
| 1205 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1206 | |
| 1207 // Debugging/initialization | |
| 1208 friend class JavaClasses; | |
| 1209 }; | |
| 1210 | |
| 1211 | |
| 1212 // Interface to java.lang.ClassLoader objects | |
| 1213 | |
| 1214 class java_lang_ClassLoader : AllStatic { | |
| 1215 private: | |
| 1216 enum { | |
| 1217 hc_parent_offset = 0 | |
| 1218 }; | |
| 1219 | |
| 1220 static int parent_offset; | |
| 1221 | |
| 1222 public: | |
| 1223 static oop parent(oop loader); | |
| 1224 | |
| 1225 static bool is_trusted_loader(oop loader); | |
| 1226 | |
| 1227 // Fix for 4474172 | |
| 1228 static oop non_reflection_class_loader(oop loader); | |
| 1229 | |
| 1230 // Debugging | |
| 1231 friend class JavaClasses; | |
| 1232 }; | |
| 1233 | |
| 1234 | |
| 1235 // Interface to java.lang.System objects | |
| 1236 | |
| 1237 class java_lang_System : AllStatic { | |
| 1238 private: | |
| 1239 enum { | |
| 1240 hc_static_in_offset = 0, | |
| 1241 hc_static_out_offset = 1, | |
| 1242 hc_static_err_offset = 2 | |
| 1243 }; | |
| 1244 | |
| 1245 static int static_in_offset; | |
| 1246 static int static_out_offset; | |
| 1247 static int static_err_offset; | |
| 1248 | |
| 1249 public: | |
| 1250 static int in_offset_in_bytes(); | |
| 1251 static int out_offset_in_bytes(); | |
| 1252 static int err_offset_in_bytes(); | |
| 1253 | |
| 1254 // Debugging | |
| 1255 friend class JavaClasses; | |
| 1256 }; | |
| 1257 | |
| 1258 | |
| 1259 // Interface to java.lang.StackTraceElement objects | |
| 1260 | |
| 1261 class java_lang_StackTraceElement: AllStatic { | |
| 1262 private: | |
| 1263 enum { | |
| 1264 hc_declaringClass_offset = 0, | |
| 1265 hc_methodName_offset = 1, | |
| 1266 hc_fileName_offset = 2, | |
| 1267 hc_lineNumber_offset = 3 | |
| 1268 }; | |
| 1269 | |
| 1270 static int declaringClass_offset; | |
| 1271 static int methodName_offset; | |
| 1272 static int fileName_offset; | |
| 1273 static int lineNumber_offset; | |
| 1274 | |
| 1275 public: | |
| 1276 // Setters | |
| 1277 static void set_declaringClass(oop element, oop value); | |
| 1278 static void set_methodName(oop element, oop value); | |
| 1279 static void set_fileName(oop element, oop value); | |
| 1280 static void set_lineNumber(oop element, int value); | |
| 1281 | |
| 1282 // Create an instance of StackTraceElement | |
| 1283 static oop create(methodHandle m, int bci, TRAPS); | |
| 1284 | |
| 1285 // Debugging | |
| 1286 friend class JavaClasses; | |
| 1287 }; | |
| 1288 | |
| 1289 | |
| 1290 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1291 | |
| 1292 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1293 private: | |
| 1294 enum { | |
| 1295 hc_classes_offset, | |
| 1296 hc_classEnabled_offset, | |
| 1297 hc_packages_offset, | |
| 1298 hc_packageEnabled_offset, | |
| 1299 hc_deflt_offset | |
| 1300 }; | |
| 1301 | |
| 1302 static int classes_offset; | |
| 1303 static int classEnabled_offset; | |
| 1304 static int packages_offset; | |
| 1305 static int packageEnabled_offset; | |
| 1306 static int deflt_offset; | |
| 1307 | |
| 1308 public: | |
| 1309 // Setters | |
| 1310 static void set_classes(oop obj, oop val); | |
| 1311 static void set_classEnabled(oop obj, oop val); | |
| 1312 static void set_packages(oop obj, oop val); | |
| 1313 static void set_packageEnabled(oop obj, oop val); | |
| 1314 static void set_deflt(oop obj, bool val); | |
| 1315 // Debugging | |
| 1316 friend class JavaClasses; | |
| 1317 }; | |
| 1318 | |
| 1319 | |
| 1320 class java_nio_Buffer: AllStatic { | |
| 1321 private: | |
| 1322 static int _limit_offset; | |
| 1323 | |
| 1324 public: | |
| 1325 static int limit_offset(); | |
| 1326 static void compute_offsets(); | |
| 1327 }; | |
| 1328 | |
| 1329 class sun_misc_AtomicLongCSImpl: AllStatic { | |
| 1330 private: | |
| 1331 static int _value_offset; | |
| 1332 | |
| 1333 public: | |
| 1334 static int value_offset(); | |
| 1335 static void compute_offsets(); | |
| 1336 }; | |
| 1337 | |
| 1338 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1339 private: | |
| 1340 static int _owner_offset; | |
| 1341 public: | |
| 1342 static void initialize(TRAPS); | |
| 1343 static oop get_owner_threadObj(oop obj); | |
| 1344 }; | |
| 1345 | |
| 1346 // Interface to hard-coded offset checking | |
| 1347 | |
| 1348 class JavaClasses : AllStatic { | |
| 1349 private: | |
| 1350 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
| 1351 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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1352 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 0 | 1353 public: |
| 1354 static void compute_hard_coded_offsets(); | |
| 1355 static void compute_offsets(); | |
| 1356 static void check_offsets() PRODUCT_RETURN; | |
| 1357 }; | |
| 1972 | 1358 |
| 1359 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |