Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 3272:01147d8aac1d
7009923: JSR 292: VM crash in JavaThread::last_frame
Summary: Handle stack overflow before the first frame is called, by printing out the called method and not walking the stack.
Reviewed-by: dholmes, phh, dsamersoff
| author | coleenp |
|---|---|
| date | Tue, 26 Apr 2011 14:04:43 -0400 |
| parents | 352622fd140a |
| children | 167b70ff3abc |
| 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 }; | |
| 396 // Trace constants | |
| 397 enum { | |
| 398 trace_methods_offset = 0, | |
| 399 trace_bcis_offset = 1, | |
| 400 trace_next_offset = 2, | |
| 401 trace_size = 3, | |
| 402 trace_chunk_size = 32 | |
| 403 }; | |
| 404 | |
| 405 static int backtrace_offset; | |
| 406 static int detailMessage_offset; | |
| 407 static int cause_offset; | |
| 408 static int stackTrace_offset; | |
| 409 | |
| 410 // Printing | |
| 411 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 412 static void print_to_stream(Handle stream, const char* str); | |
| 413 // StackTrace (programmatic access, new since 1.4) | |
| 414 static void clear_stacktrace(oop throwable); | |
| 415 // No stack trace available | |
| 416 static const char* no_stack_trace_message(); | |
| 417 | |
| 418 public: | |
| 419 // Backtrace | |
| 420 static oop backtrace(oop throwable); | |
| 421 static void set_backtrace(oop throwable, oop value); | |
| 422 // Needed by JVMTI to filter out this internal field. | |
| 423 static int get_backtrace_offset() { return backtrace_offset;} | |
| 424 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 425 // Message | |
| 426 static oop message(oop throwable); | |
| 427 static oop message(Handle throwable); | |
| 428 static void set_message(oop throwable, oop value); | |
| 429 // Print stack trace stored in exception by call-back to Java | |
| 430 // Note: this is no longer used in Merlin, but we still suppport | |
| 431 // it for compatibility. | |
| 432 static void print_stack_trace(oop throwable, oop print_stream); | |
| 433 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 434 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 435 static void print_stack_usage(Handle stream); | |
| 436 | |
| 437 // Allocate space for backtrace (created but stack trace not filled in) | |
| 438 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 439 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 440 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 441 | |
| 442 // Fill in current stack trace, can cause GC | |
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443 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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444 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 445 // Programmatic access to stack trace |
| 446 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 447 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 448 // Printing | |
| 449 static void print(oop throwable, outputStream* st); | |
| 450 static void print(Handle throwable, outputStream* st); | |
| 451 static void print_stack_trace(oop throwable, outputStream* st); | |
| 452 // Debugging | |
| 453 friend class JavaClasses; | |
| 454 }; | |
| 455 | |
| 456 | |
| 457 // Interface to java.lang.reflect.AccessibleObject objects | |
| 458 | |
| 459 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 460 private: | |
| 461 // Note that to reduce dependencies on the JDK we compute these | |
| 462 // offsets at run-time. | |
| 463 static int override_offset; | |
| 464 | |
| 465 static void compute_offsets(); | |
| 466 | |
| 467 public: | |
| 468 // Accessors | |
| 469 static jboolean override(oop reflect); | |
| 470 static void set_override(oop reflect, jboolean value); | |
| 471 | |
| 472 // Debugging | |
| 473 friend class JavaClasses; | |
| 474 }; | |
| 475 | |
| 476 | |
| 477 // Interface to java.lang.reflect.Method objects | |
| 478 | |
| 479 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 480 private: | |
| 481 // Note that to reduce dependencies on the JDK we compute these | |
| 482 // offsets at run-time. | |
| 483 static int clazz_offset; | |
| 484 static int name_offset; | |
| 485 static int returnType_offset; | |
| 486 static int parameterTypes_offset; | |
| 487 static int exceptionTypes_offset; | |
| 488 static int slot_offset; | |
| 489 static int modifiers_offset; | |
| 490 static int signature_offset; | |
| 491 static int annotations_offset; | |
| 492 static int parameter_annotations_offset; | |
| 493 static int annotation_default_offset; | |
| 494 | |
| 495 static void compute_offsets(); | |
| 496 | |
| 497 public: | |
| 498 // Allocation | |
| 499 static Handle create(TRAPS); | |
| 500 | |
| 501 // Accessors | |
| 502 static oop clazz(oop reflect); | |
| 503 static void set_clazz(oop reflect, oop value); | |
| 504 | |
| 505 static oop name(oop method); | |
| 506 static void set_name(oop method, oop value); | |
| 507 | |
| 508 static oop return_type(oop method); | |
| 509 static void set_return_type(oop method, oop value); | |
| 510 | |
| 511 static oop parameter_types(oop method); | |
| 512 static void set_parameter_types(oop method, oop value); | |
| 513 | |
| 514 static oop exception_types(oop method); | |
| 515 static void set_exception_types(oop method, oop value); | |
| 516 | |
| 517 static int slot(oop reflect); | |
| 518 static void set_slot(oop reflect, int value); | |
| 519 | |
| 520 static int modifiers(oop method); | |
| 521 static void set_modifiers(oop method, int value); | |
| 522 | |
| 523 static bool has_signature_field(); | |
| 524 static oop signature(oop method); | |
| 525 static void set_signature(oop method, oop value); | |
| 526 | |
| 527 static bool has_annotations_field(); | |
| 528 static oop annotations(oop method); | |
| 529 static void set_annotations(oop method, oop value); | |
| 530 | |
| 531 static bool has_parameter_annotations_field(); | |
| 532 static oop parameter_annotations(oop method); | |
| 533 static void set_parameter_annotations(oop method, oop value); | |
| 534 | |
| 535 static bool has_annotation_default_field(); | |
| 536 static oop annotation_default(oop method); | |
| 537 static void set_annotation_default(oop method, oop value); | |
| 538 | |
| 539 // Debugging | |
| 540 friend class JavaClasses; | |
| 541 }; | |
| 542 | |
| 543 | |
| 544 // Interface to java.lang.reflect.Constructor objects | |
| 545 | |
| 546 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 547 private: | |
| 548 // Note that to reduce dependencies on the JDK we compute these | |
| 549 // offsets at run-time. | |
| 550 static int clazz_offset; | |
| 551 static int parameterTypes_offset; | |
| 552 static int exceptionTypes_offset; | |
| 553 static int slot_offset; | |
| 554 static int modifiers_offset; | |
| 555 static int signature_offset; | |
| 556 static int annotations_offset; | |
| 557 static int parameter_annotations_offset; | |
| 558 | |
| 559 static void compute_offsets(); | |
| 560 | |
| 561 public: | |
| 562 // Allocation | |
| 563 static Handle create(TRAPS); | |
| 564 | |
| 565 // Accessors | |
| 566 static oop clazz(oop reflect); | |
| 567 static void set_clazz(oop reflect, oop value); | |
| 568 | |
| 569 static oop parameter_types(oop constructor); | |
| 570 static void set_parameter_types(oop constructor, oop value); | |
| 571 | |
| 572 static oop exception_types(oop constructor); | |
| 573 static void set_exception_types(oop constructor, oop value); | |
| 574 | |
| 575 static int slot(oop reflect); | |
| 576 static void set_slot(oop reflect, int value); | |
| 577 | |
| 578 static int modifiers(oop constructor); | |
| 579 static void set_modifiers(oop constructor, int value); | |
| 580 | |
| 581 static bool has_signature_field(); | |
| 582 static oop signature(oop constructor); | |
| 583 static void set_signature(oop constructor, oop value); | |
| 584 | |
| 585 static bool has_annotations_field(); | |
| 586 static oop annotations(oop constructor); | |
| 587 static void set_annotations(oop constructor, oop value); | |
| 588 | |
| 589 static bool has_parameter_annotations_field(); | |
| 590 static oop parameter_annotations(oop method); | |
| 591 static void set_parameter_annotations(oop method, oop value); | |
| 592 | |
| 593 // Debugging | |
| 594 friend class JavaClasses; | |
| 595 }; | |
| 596 | |
| 597 | |
| 598 // Interface to java.lang.reflect.Field objects | |
| 599 | |
| 600 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 601 private: | |
| 602 // Note that to reduce dependencies on the JDK we compute these | |
| 603 // offsets at run-time. | |
| 604 static int clazz_offset; | |
| 605 static int name_offset; | |
| 606 static int type_offset; | |
| 607 static int slot_offset; | |
| 608 static int modifiers_offset; | |
| 609 static int signature_offset; | |
| 610 static int annotations_offset; | |
| 611 | |
| 612 static void compute_offsets(); | |
| 613 | |
| 614 public: | |
| 615 // Allocation | |
| 616 static Handle create(TRAPS); | |
| 617 | |
| 618 // Accessors | |
| 619 static oop clazz(oop reflect); | |
| 620 static void set_clazz(oop reflect, oop value); | |
| 621 | |
| 622 static oop name(oop field); | |
| 623 static void set_name(oop field, oop value); | |
| 624 | |
| 625 static oop type(oop field); | |
| 626 static void set_type(oop field, oop value); | |
| 627 | |
| 628 static int slot(oop reflect); | |
| 629 static void set_slot(oop reflect, int value); | |
| 630 | |
| 631 static int modifiers(oop field); | |
| 632 static void set_modifiers(oop field, int value); | |
| 633 | |
| 634 static bool has_signature_field(); | |
| 635 static oop signature(oop constructor); | |
| 636 static void set_signature(oop constructor, oop value); | |
| 637 | |
| 638 static bool has_annotations_field(); | |
| 639 static oop annotations(oop constructor); | |
| 640 static void set_annotations(oop constructor, oop value); | |
| 641 | |
| 642 static bool has_parameter_annotations_field(); | |
| 643 static oop parameter_annotations(oop method); | |
| 644 static void set_parameter_annotations(oop method, oop value); | |
| 645 | |
| 646 static bool has_annotation_default_field(); | |
| 647 static oop annotation_default(oop method); | |
| 648 static void set_annotation_default(oop method, oop value); | |
| 649 | |
| 650 // Debugging | |
| 651 friend class JavaClasses; | |
| 652 }; | |
| 653 | |
| 654 // Interface to sun.reflect.ConstantPool objects | |
| 655 class sun_reflect_ConstantPool { | |
| 656 private: | |
| 657 // Note that to reduce dependencies on the JDK we compute these | |
| 658 // offsets at run-time. | |
| 659 static int _cp_oop_offset; | |
| 660 | |
| 661 static void compute_offsets(); | |
| 662 | |
| 663 public: | |
| 664 // Allocation | |
| 665 static Handle create(TRAPS); | |
| 666 | |
| 667 // Accessors | |
| 668 static oop cp_oop(oop reflect); | |
| 669 static void set_cp_oop(oop reflect, oop value); | |
| 670 static int cp_oop_offset() { | |
| 671 return _cp_oop_offset; | |
| 672 } | |
| 673 | |
| 674 // Debugging | |
| 675 friend class JavaClasses; | |
| 676 }; | |
| 677 | |
| 678 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 679 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 680 private: | |
| 681 static int _base_offset; | |
| 682 static void compute_offsets(); | |
| 683 | |
| 684 public: | |
| 685 static int base_offset() { | |
| 686 return _base_offset; | |
| 687 } | |
| 688 | |
| 689 // Debugging | |
| 690 friend class JavaClasses; | |
| 691 }; | |
| 692 | |
| 693 // Interface to java.lang primitive type boxing objects: | |
| 694 // - java.lang.Boolean | |
| 695 // - java.lang.Character | |
| 696 // - java.lang.Float | |
| 697 // - java.lang.Double | |
| 698 // - java.lang.Byte | |
| 699 // - java.lang.Short | |
| 700 // - java.lang.Integer | |
| 701 // - java.lang.Long | |
| 702 | |
| 703 // This could be separated out into 8 individual classes. | |
| 704 | |
| 705 class java_lang_boxing_object: AllStatic { | |
| 706 private: | |
| 707 enum { | |
| 708 hc_value_offset = 0 | |
| 709 }; | |
| 710 static int value_offset; | |
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711 static int long_value_offset; |
| 0 | 712 |
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713 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 714 public: |
| 715 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 716 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 717 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 718 static BasicType get_value(oop box, jvalue* value); | |
| 719 static BasicType set_value(oop box, jvalue* value); | |
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720 static BasicType basic_type(oop box); |
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721 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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722 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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723 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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724 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 725 |
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726 static int value_offset_in_bytes(BasicType type) { |
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727 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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728 value_offset; |
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729 } |
| 0 | 730 |
| 731 // Debugging | |
| 732 friend class JavaClasses; | |
| 733 }; | |
| 734 | |
| 735 | |
| 736 | |
| 737 // Interface to java.lang.ref.Reference objects | |
| 738 | |
| 739 class java_lang_ref_Reference: AllStatic { | |
| 740 public: | |
| 741 enum { | |
| 742 hc_referent_offset = 0, | |
| 743 hc_queue_offset = 1, | |
| 744 hc_next_offset = 2, | |
| 745 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 746 }; | |
| 747 enum { | |
| 748 hc_static_lock_offset = 0, | |
| 749 hc_static_pending_offset = 1 | |
| 750 }; | |
| 751 | |
| 752 static int referent_offset; | |
| 753 static int queue_offset; | |
| 754 static int next_offset; | |
| 755 static int discovered_offset; | |
| 756 static int static_lock_offset; | |
| 757 static int static_pending_offset; | |
| 758 static int number_of_fake_oop_fields; | |
| 759 | |
| 760 // Accessors | |
|
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761 static oop referent(oop ref) { |
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762 return ref->obj_field(referent_offset); |
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763 } |
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764 static void set_referent(oop ref, oop value) { |
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765 ref->obj_field_put(referent_offset, value); |
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766 } |
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767 static void set_referent_raw(oop ref, oop value) { |
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768 ref->obj_field_raw_put(referent_offset, value); |
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769 } |
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770 static HeapWord* referent_addr(oop ref) { |
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771 return ref->obj_field_addr<HeapWord>(referent_offset); |
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772 } |
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773 static oop next(oop ref) { |
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774 return ref->obj_field(next_offset); |
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775 } |
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776 static void set_next(oop ref, oop value) { |
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777 ref->obj_field_put(next_offset, value); |
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778 } |
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779 static void set_next_raw(oop ref, oop value) { |
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780 ref->obj_field_raw_put(next_offset, value); |
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781 } |
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782 static HeapWord* next_addr(oop ref) { |
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783 return ref->obj_field_addr<HeapWord>(next_offset); |
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784 } |
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785 static oop discovered(oop ref) { |
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786 return ref->obj_field(discovered_offset); |
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787 } |
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788 static void set_discovered(oop ref, oop value) { |
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789 ref->obj_field_put(discovered_offset, value); |
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790 } |
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791 static void set_discovered_raw(oop ref, oop value) { |
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792 ref->obj_field_raw_put(discovered_offset, value); |
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793 } |
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794 static HeapWord* discovered_addr(oop ref) { |
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795 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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796 } |
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797 // Accessors for statics |
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798 static oop pending_list_lock(); |
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799 static oop pending_list(); |
| 0 | 800 |
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801 static HeapWord* pending_list_addr(); |
| 0 | 802 }; |
| 803 | |
| 804 | |
| 805 // Interface to java.lang.ref.SoftReference objects | |
| 806 | |
| 807 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 808 public: | |
| 809 enum { | |
| 810 // The timestamp is a long field and may need to be adjusted for alignment. | |
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811 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 812 }; |
| 813 enum { | |
| 814 hc_static_clock_offset = 0 | |
| 815 }; | |
| 816 | |
| 817 static int timestamp_offset; | |
| 818 static int static_clock_offset; | |
| 819 | |
| 820 // Accessors | |
| 821 static jlong timestamp(oop ref); | |
| 822 | |
| 823 // Accessors for statics | |
| 824 static jlong clock(); | |
| 825 static void set_clock(jlong value); | |
| 826 }; | |
| 827 | |
| 828 | |
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829 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 830 |
| 831 class MethodHandleEntry; | |
| 832 | |
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833 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 834 friend class JavaClasses; |
| 835 | |
| 836 private: | |
| 837 static int _vmentry_offset; // assembly code trampoline for MH | |
| 838 static int _vmtarget_offset; // class-specific target reference | |
| 839 static int _type_offset; // the MethodType of this MH | |
| 840 static int _vmslots_offset; // OPTIONAL hoisted type.form.vmslots | |
| 841 | |
| 842 static void compute_offsets(); | |
| 843 | |
| 844 public: | |
| 845 // Accessors | |
| 846 static oop type(oop mh); | |
| 847 static void set_type(oop mh, oop mtype); | |
| 848 | |
| 849 static oop vmtarget(oop mh); | |
| 850 static void set_vmtarget(oop mh, oop target); | |
| 851 | |
| 852 static MethodHandleEntry* vmentry(oop mh); | |
| 853 static void set_vmentry(oop mh, MethodHandleEntry* data); | |
| 854 | |
| 855 static int vmslots(oop mh); | |
| 856 static void init_vmslots(oop mh); | |
| 857 static int compute_vmslots(oop mh); | |
| 858 | |
| 859 // Testers | |
| 860 static bool is_subclass(klassOop klass) { | |
| 861 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
| 862 } | |
| 863 static bool is_instance(oop obj) { | |
| 864 return obj != NULL && is_subclass(obj->klass()); | |
| 865 } | |
| 866 | |
| 867 // Accessors for code generation: | |
| 868 static int type_offset_in_bytes() { return _type_offset; } | |
| 869 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 870 static int vmentry_offset_in_bytes() { return _vmentry_offset; } | |
| 871 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
| 872 }; | |
| 873 | |
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874 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 875 friend class JavaClasses; |
| 876 | |
| 877 private: | |
| 878 // _vmtarget_offset; // method or class or interface | |
| 879 static int _vmindex_offset; // negative or vtable idx or itable idx | |
| 880 static void compute_offsets(); | |
| 881 | |
| 882 public: | |
| 883 // Accessors | |
| 884 static int vmindex(oop mh); | |
| 885 static void set_vmindex(oop mh, int index); | |
| 886 | |
| 887 // Testers | |
| 888 static bool is_subclass(klassOop klass) { | |
| 889 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); | |
| 890 } | |
| 891 static bool is_instance(oop obj) { | |
| 892 return obj != NULL && is_subclass(obj->klass()); | |
| 893 } | |
| 894 | |
| 895 // Accessors for code generation: | |
| 896 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 897 }; | |
| 898 | |
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899 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle { |
| 710 | 900 friend class JavaClasses; |
| 901 | |
| 902 private: | |
| 903 static int _argument_offset; // argument value bound into this MH | |
| 904 static int _vmargslot_offset; // relevant argument slot (<= vmslots) | |
| 905 static void compute_offsets(); | |
| 906 | |
| 907 public: | |
| 908 static oop argument(oop mh); | |
| 909 static void set_argument(oop mh, oop ref); | |
| 910 | |
| 911 static jint vmargslot(oop mh); | |
| 912 static void set_vmargslot(oop mh, jint slot); | |
| 913 | |
| 914 // Testers | |
| 915 static bool is_subclass(klassOop klass) { | |
| 916 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass()); | |
| 917 } | |
| 918 static bool is_instance(oop obj) { | |
| 919 return obj != NULL && is_subclass(obj->klass()); | |
| 920 } | |
| 921 | |
| 922 static int argument_offset_in_bytes() { return _argument_offset; } | |
| 923 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; } | |
| 924 }; | |
| 925 | |
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926 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle { |
| 710 | 927 friend class JavaClasses; |
| 928 | |
| 929 private: | |
| 930 static int _conversion_offset; // type of conversion to apply | |
| 931 static void compute_offsets(); | |
| 932 | |
| 933 public: | |
| 934 static int conversion(oop mh); | |
| 935 static void set_conversion(oop mh, int conv); | |
| 936 | |
| 937 // Testers | |
| 938 static bool is_subclass(klassOop klass) { | |
| 939 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass()); | |
| 940 } | |
| 941 static bool is_instance(oop obj) { | |
| 942 return obj != NULL && is_subclass(obj->klass()); | |
| 943 } | |
| 944 | |
| 945 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 946 enum { | |
| 947 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype | |
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948 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T) |
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949 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument |
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950 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another |
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951 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive |
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952 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper (NYI) |
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953 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg) |
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954 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg) |
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955 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS) |
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956 OP_DROP_ARGS = 0x9, // remove one or more argument slots |
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957 OP_COLLECT_ARGS = 0xA, // combine one or more arguments into a varargs (NYI) |
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958 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size) |
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959 OP_FLYBY = 0xC, // operate first on reified argument list (NYI) |
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960 OP_RICOCHET = 0xD, // run an adapter chain on the return value (NYI) |
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961 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration |
| 710 | 962 |
| 963 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field | |
| 964 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use | |
| 965 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK | |
| 966 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK | |
| 967 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed) | |
| 968 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed) | |
| 969 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change | |
| 970 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1 | |
| 971 }; | |
| 972 | |
| 973 static int conversion_offset_in_bytes() { return _conversion_offset; } | |
| 974 }; | |
| 975 | |
| 976 | |
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977 // Interface to java.lang.invoke.MemberName objects |
| 710 | 978 // (These are a private interface for Java code to query the class hierarchy.) |
| 979 | |
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980 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 981 friend class JavaClasses; |
| 982 | |
| 983 private: | |
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984 // From java.lang.invoke.MemberName: |
| 710 | 985 // private Class<?> clazz; // class in which the method is defined |
| 986 // private String name; // may be null if not yet materialized | |
| 987 // private Object type; // may be null if not yet materialized | |
| 988 // private int flags; // modifier bits; see reflect.Modifier | |
| 989 // private Object vmtarget; // VM-specific target value | |
| 990 // private int vmindex; // method index within class or interface | |
| 991 static int _clazz_offset; | |
| 992 static int _name_offset; | |
| 993 static int _type_offset; | |
| 994 static int _flags_offset; | |
| 995 static int _vmtarget_offset; | |
| 996 static int _vmindex_offset; | |
| 997 | |
| 998 static void compute_offsets(); | |
| 999 | |
| 1000 public: | |
| 1001 // Accessors | |
| 1002 static oop clazz(oop mname); | |
| 1003 static void set_clazz(oop mname, oop clazz); | |
| 1004 | |
| 1005 static oop type(oop mname); | |
| 1006 static void set_type(oop mname, oop type); | |
| 1007 | |
| 1008 static oop name(oop mname); | |
| 1009 static void set_name(oop mname, oop name); | |
| 1010 | |
| 1011 static int flags(oop mname); | |
| 1012 static void set_flags(oop mname, int flags); | |
| 1013 | |
| 1014 static int modifiers(oop mname) { return (u2) flags(mname); } | |
| 1015 static void set_modifiers(oop mname, int mods) | |
| 1016 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); } | |
| 1017 | |
| 1018 static oop vmtarget(oop mname); | |
| 1019 static void set_vmtarget(oop mname, oop target); | |
| 1020 | |
| 1021 static int vmindex(oop mname); | |
| 1022 static void set_vmindex(oop mname, int index); | |
| 1023 | |
| 1024 // Testers | |
| 1025 static bool is_subclass(klassOop klass) { | |
| 1026 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
| 1027 } | |
| 1028 static bool is_instance(oop obj) { | |
| 1029 return obj != NULL && is_subclass(obj->klass()); | |
| 1030 } | |
| 1031 | |
| 1032 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 1033 enum { | |
| 1034 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 1035 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 1036 MN_IS_FIELD = 0x00040000, // field | |
| 1037 MN_IS_TYPE = 0x00080000, // nested type | |
| 1038 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers | |
| 1039 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers | |
| 1040 VM_INDEX_UNINITIALIZED = -99 | |
| 1041 }; | |
| 1042 | |
| 1043 // Accessors for code generation: | |
| 1044 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1045 static int type_offset_in_bytes() { return _type_offset; } | |
| 1046 static int name_offset_in_bytes() { return _name_offset; } | |
| 1047 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1048 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1049 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1050 }; | |
| 1051 | |
| 1052 | |
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1053 // Interface to java.lang.invoke.MethodType objects |
| 710 | 1054 |
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1055 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1056 friend class JavaClasses; |
| 1057 | |
| 1058 private: | |
| 1059 static int _rtype_offset; | |
| 1060 static int _ptypes_offset; | |
| 1061 static int _form_offset; | |
| 1062 | |
| 1063 static void compute_offsets(); | |
| 1064 | |
| 1065 public: | |
| 1066 // Accessors | |
| 1067 static oop rtype(oop mt); | |
| 1068 static objArrayOop ptypes(oop mt); | |
| 1069 static oop form(oop mt); | |
| 1070 | |
| 1071 static oop ptype(oop mt, int index); | |
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1072 static int ptype_count(oop mt); |
| 710 | 1073 |
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1074 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1075 static void print_signature(oop mt, outputStream* st); |
| 1076 | |
| 1077 static bool is_instance(oop obj) { | |
| 1078 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1079 } | |
| 1080 | |
| 1081 // Accessors for code generation: | |
| 1082 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1083 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1084 static int form_offset_in_bytes() { return _form_offset; } | |
| 1085 }; | |
| 1086 | |
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1087 class java_lang_invoke_MethodTypeForm: AllStatic { |
| 710 | 1088 friend class JavaClasses; |
| 1089 | |
| 1090 private: | |
| 1091 static int _vmslots_offset; // number of argument slots needed | |
| 1092 static int _erasedType_offset; // erasedType = canonical MethodType | |
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1093 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric |
| 710 | 1094 |
| 1095 static void compute_offsets(); | |
| 1096 | |
| 1097 public: | |
| 1098 // Accessors | |
| 1099 static int vmslots(oop mtform); | |
| 1100 static oop erasedType(oop mtform); | |
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1101 static oop genericInvoker(oop mtform); |
| 710 | 1102 |
| 1103 // Accessors for code generation: | |
| 1104 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
| 1105 static int erasedType_offset_in_bytes() { return _erasedType_offset; } | |
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1106 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; } |
| 710 | 1107 }; |
| 1108 | |
| 1109 | |
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1110 // Interface to java.lang.invoke.CallSite objects |
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1111 |
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1112 class java_lang_invoke_CallSite: AllStatic { |
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1113 friend class JavaClasses; |
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1114 |
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1115 private: |
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1116 static int _target_offset; |
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1117 static int _caller_method_offset; |
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1118 static int _caller_bci_offset; |
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1119 |
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1120 static void compute_offsets(); |
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1121 |
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1122 public: |
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1123 // Accessors |
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1124 static oop target(oop site); |
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1125 static void set_target(oop site, oop target); |
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1126 |
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1127 static oop caller_method(oop site); |
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1128 static void set_caller_method(oop site, oop ref); |
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1129 |
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1130 static jint caller_bci(oop site); |
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1131 static void set_caller_bci(oop site, jint bci); |
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1132 |
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1133 // Testers |
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1134 static bool is_subclass(klassOop klass) { |
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1135 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1136 } |
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1137 static bool is_instance(oop obj) { |
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1138 return obj != NULL && is_subclass(obj->klass()); |
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1139 } |
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1140 |
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1141 // Accessors for code generation: |
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1142 static int target_offset_in_bytes() { return _target_offset; } |
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1143 static int caller_method_offset_in_bytes() { return _caller_method_offset; } |
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1144 static int caller_bci_offset_in_bytes() { return _caller_bci_offset; } |
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1145 }; |
| 710 | 1146 |
| 1147 | |
| 0 | 1148 // Interface to java.security.AccessControlContext objects |
| 1149 | |
| 1150 class java_security_AccessControlContext: AllStatic { | |
| 1151 private: | |
| 1152 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1153 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1154 static int _context_offset; | |
| 1155 static int _privilegedContext_offset; | |
| 1156 static int _isPrivileged_offset; | |
| 1157 | |
| 1158 static void compute_offsets(); | |
| 1159 public: | |
| 1160 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1161 | |
| 1162 // Debugging/initialization | |
| 1163 friend class JavaClasses; | |
| 1164 }; | |
| 1165 | |
| 1166 | |
| 1167 // Interface to java.lang.ClassLoader objects | |
| 1168 | |
| 1169 class java_lang_ClassLoader : AllStatic { | |
| 1170 private: | |
| 1171 enum { | |
| 1172 hc_parent_offset = 0 | |
| 1173 }; | |
| 1174 | |
| 1175 static int parent_offset; | |
| 1176 | |
| 1177 public: | |
| 1178 static oop parent(oop loader); | |
| 1179 | |
| 1180 static bool is_trusted_loader(oop loader); | |
| 1181 | |
| 1182 // Fix for 4474172 | |
| 1183 static oop non_reflection_class_loader(oop loader); | |
| 1184 | |
| 1185 // Debugging | |
| 1186 friend class JavaClasses; | |
| 1187 }; | |
| 1188 | |
| 1189 | |
| 1190 // Interface to java.lang.System objects | |
| 1191 | |
| 1192 class java_lang_System : AllStatic { | |
| 1193 private: | |
| 1194 enum { | |
| 1195 hc_static_in_offset = 0, | |
| 1196 hc_static_out_offset = 1, | |
| 1197 hc_static_err_offset = 2 | |
| 1198 }; | |
| 1199 | |
| 1200 static int static_in_offset; | |
| 1201 static int static_out_offset; | |
| 1202 static int static_err_offset; | |
| 1203 | |
| 1204 public: | |
| 1205 static int in_offset_in_bytes(); | |
| 1206 static int out_offset_in_bytes(); | |
| 1207 static int err_offset_in_bytes(); | |
| 1208 | |
| 1209 // Debugging | |
| 1210 friend class JavaClasses; | |
| 1211 }; | |
| 1212 | |
| 1213 | |
| 1214 // Interface to java.lang.StackTraceElement objects | |
| 1215 | |
| 1216 class java_lang_StackTraceElement: AllStatic { | |
| 1217 private: | |
| 1218 enum { | |
| 1219 hc_declaringClass_offset = 0, | |
| 1220 hc_methodName_offset = 1, | |
| 1221 hc_fileName_offset = 2, | |
| 1222 hc_lineNumber_offset = 3 | |
| 1223 }; | |
| 1224 | |
| 1225 static int declaringClass_offset; | |
| 1226 static int methodName_offset; | |
| 1227 static int fileName_offset; | |
| 1228 static int lineNumber_offset; | |
| 1229 | |
| 1230 public: | |
| 1231 // Setters | |
| 1232 static void set_declaringClass(oop element, oop value); | |
| 1233 static void set_methodName(oop element, oop value); | |
| 1234 static void set_fileName(oop element, oop value); | |
| 1235 static void set_lineNumber(oop element, int value); | |
| 1236 | |
| 1237 // Create an instance of StackTraceElement | |
| 1238 static oop create(methodHandle m, int bci, TRAPS); | |
| 1239 | |
| 1240 // Debugging | |
| 1241 friend class JavaClasses; | |
| 1242 }; | |
| 1243 | |
| 1244 | |
| 1245 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1246 | |
| 1247 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1248 private: | |
| 1249 enum { | |
| 1250 hc_classes_offset, | |
| 1251 hc_classEnabled_offset, | |
| 1252 hc_packages_offset, | |
| 1253 hc_packageEnabled_offset, | |
| 1254 hc_deflt_offset | |
| 1255 }; | |
| 1256 | |
| 1257 static int classes_offset; | |
| 1258 static int classEnabled_offset; | |
| 1259 static int packages_offset; | |
| 1260 static int packageEnabled_offset; | |
| 1261 static int deflt_offset; | |
| 1262 | |
| 1263 public: | |
| 1264 // Setters | |
| 1265 static void set_classes(oop obj, oop val); | |
| 1266 static void set_classEnabled(oop obj, oop val); | |
| 1267 static void set_packages(oop obj, oop val); | |
| 1268 static void set_packageEnabled(oop obj, oop val); | |
| 1269 static void set_deflt(oop obj, bool val); | |
| 1270 // Debugging | |
| 1271 friend class JavaClasses; | |
| 1272 }; | |
| 1273 | |
| 1274 | |
| 1275 class java_nio_Buffer: AllStatic { | |
| 1276 private: | |
| 1277 static int _limit_offset; | |
| 1278 | |
| 1279 public: | |
| 1280 static int limit_offset(); | |
| 1281 static void compute_offsets(); | |
| 1282 }; | |
| 1283 | |
| 1284 class sun_misc_AtomicLongCSImpl: AllStatic { | |
| 1285 private: | |
| 1286 static int _value_offset; | |
| 1287 | |
| 1288 public: | |
| 1289 static int value_offset(); | |
| 1290 static void compute_offsets(); | |
| 1291 }; | |
| 1292 | |
| 1293 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1294 private: | |
| 1295 static int _owner_offset; | |
| 1296 public: | |
| 1297 static void initialize(TRAPS); | |
| 1298 static oop get_owner_threadObj(oop obj); | |
| 1299 }; | |
| 1300 | |
| 1301 // Interface to hard-coded offset checking | |
| 1302 | |
| 1303 class JavaClasses : AllStatic { | |
| 1304 private: | |
| 1305 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
| 1306 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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1307 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 0 | 1308 public: |
| 1309 static void compute_hard_coded_offsets(); | |
| 1310 static void compute_offsets(); | |
| 1311 static void check_offsets() PRODUCT_RETURN; | |
| 1312 }; | |
| 1972 | 1313 |
| 1314 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |