Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 7378:88506cfc3bab
Canonicalize ((a - a % b) / b) into (a / b).
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 15 Jan 2013 17:53:31 +0100 |
parents | 291ffc492eb6 |
children | 989155e2d07a |
rev | line source |
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0 | 1 /* |
6057 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP |
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP | |
27 | |
28 #include "classfile/systemDictionary.hpp" | |
29 #include "jvmtifiles/jvmti.h" | |
30 #include "oops/oop.hpp" | |
31 #include "runtime/os.hpp" | |
32 #include "utilities/utf8.hpp" | |
33 | |
0 | 34 // Interface for manipulating the basic Java classes. |
35 // | |
36 // All dependencies on layout of actual Java classes should be kept here. | |
37 // If the layout of any of the classes above changes the offsets must be adjusted. | |
38 // | |
39 // For most classes we hardwire the offsets for performance reasons. In certain | |
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
41 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
42 // | |
43 // Note that fields (static and non-static) are arranged with oops before non-oops | |
44 // on a per class basis. The offsets below have to reflect this ordering. | |
45 // | |
46 // When editing the layouts please update the check_offset verification code | |
47 // correspondingly. The names in the enums must be identical to the actual field | |
48 // names in order for the verification code to work. | |
49 | |
50 | |
51 // Interface to java.lang.String objects | |
52 | |
53 class java_lang_String : AllStatic { | |
54 private: | |
55 static int value_offset; | |
56 static int offset_offset; | |
57 static int count_offset; | |
58 static int hash_offset; | |
59 | |
6057 | 60 static bool initialized; |
61 | |
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62 static Handle basic_create(int length, TRAPS); |
0 | 63 |
6057 | 64 static void set_value( oop string, typeArrayOop buffer) { |
65 assert(initialized, "Must be initialized"); | |
66 string->obj_field_put(value_offset, (oop)buffer); | |
67 } | |
68 static void set_offset(oop string, int offset) { | |
69 assert(initialized, "Must be initialized"); | |
70 if (offset_offset > 0) { | |
71 string->int_field_put(offset_offset, offset); | |
72 } | |
73 } | |
74 static void set_count( oop string, int count) { | |
75 assert(initialized, "Must be initialized"); | |
76 if (count_offset > 0) { | |
77 string->int_field_put(count_offset, count); | |
78 } | |
79 } | |
0 | 80 |
81 public: | |
6057 | 82 static void compute_offsets(); |
83 | |
0 | 84 // Instance creation |
85 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
86 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
87 static Handle create_from_str(const char* utf8_str, TRAPS); | |
88 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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89 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
0 | 90 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
91 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
92 | |
6057 | 93 static bool has_offset_field() { |
94 assert(initialized, "Must be initialized"); | |
95 return (offset_offset > 0); | |
96 } | |
97 | |
98 static bool has_count_field() { | |
99 assert(initialized, "Must be initialized"); | |
100 return (count_offset > 0); | |
101 } | |
102 | |
103 static bool has_hash_field() { | |
104 assert(initialized, "Must be initialized"); | |
105 return (hash_offset > 0); | |
106 } | |
107 | |
108 static int value_offset_in_bytes() { | |
109 assert(initialized && (value_offset > 0), "Must be initialized"); | |
110 return value_offset; | |
111 } | |
112 static int count_offset_in_bytes() { | |
113 assert(initialized && (count_offset > 0), "Must be initialized"); | |
114 return count_offset; | |
115 } | |
116 static int offset_offset_in_bytes() { | |
117 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
118 return offset_offset; | |
119 } | |
120 static int hash_offset_in_bytes() { | |
121 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
122 return hash_offset; | |
123 } | |
0 | 124 |
125 // Accessors | |
126 static typeArrayOop value(oop java_string) { | |
6057 | 127 assert(initialized && (value_offset > 0), "Must be initialized"); |
0 | 128 assert(is_instance(java_string), "must be java_string"); |
129 return (typeArrayOop) java_string->obj_field(value_offset); | |
130 } | |
131 static int offset(oop java_string) { | |
6057 | 132 assert(initialized, "Must be initialized"); |
0 | 133 assert(is_instance(java_string), "must be java_string"); |
6057 | 134 if (offset_offset > 0) { |
135 return java_string->int_field(offset_offset); | |
136 } else { | |
137 return 0; | |
138 } | |
0 | 139 } |
140 static int length(oop java_string) { | |
6057 | 141 assert(initialized, "Must be initialized"); |
0 | 142 assert(is_instance(java_string), "must be java_string"); |
6057 | 143 if (count_offset > 0) { |
144 return java_string->int_field(count_offset); | |
145 } else { | |
146 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
147 } | |
0 | 148 } |
149 static int utf8_length(oop java_string); | |
150 | |
151 // String converters | |
152 static char* as_utf8_string(oop java_string); | |
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153 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
0 | 154 static char* as_utf8_string(oop java_string, int start, int len); |
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155 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
0 | 156 static jchar* as_unicode_string(oop java_string, int& length); |
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157 // produce an ascii string with all other values quoted using \u#### |
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158 static char* as_quoted_ascii(oop java_string); |
0 | 159 |
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160 // Compute the hash value for a java.lang.String object which would |
6162 | 161 // contain the characters passed in. |
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162 // |
6162 | 163 // As the hash value used by the String object itself, in |
164 // String.hashCode(). This value is normally calculated in Java code | |
165 // in the String.hashCode method(), but is precomputed for String | |
166 // objects in the shared archive file. | |
167 // hash P(31) from Kernighan & Ritchie | |
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168 // |
6162 | 169 // For this reason, THIS ALGORITHM MUST MATCH String.toHash(). |
170 template <typename T> static unsigned int to_hash(T* s, int len) { | |
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171 unsigned int h = 0; |
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172 while (len-- > 0) { |
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173 h = 31*h + (unsigned int) *s; |
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174 s++; |
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175 } |
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176 return h; |
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177 } |
6162 | 178 static unsigned int to_hash(oop java_string); |
179 | |
180 // This is the string hash code used by the StringTable, which may be | |
181 // the same as String.toHash or an alternate hash code. | |
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182 static unsigned int hash_string(oop java_string); |
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183 |
0 | 184 static bool equals(oop java_string, jchar* chars, int len); |
185 | |
186 // Conversion between '.' and '/' formats | |
187 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
188 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
189 | |
190 // Conversion | |
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191 static Symbol* as_symbol(Handle java_string, TRAPS); |
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192 static Symbol* as_symbol_or_null(oop java_string); |
0 | 193 |
194 // Testers | |
195 static bool is_instance(oop obj) { | |
1142 | 196 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 197 } |
198 | |
199 // Debugging | |
200 static void print(Handle java_string, outputStream* st); | |
201 friend class JavaClasses; | |
202 }; | |
203 | |
204 | |
205 // Interface to java.lang.Class objects | |
206 | |
3938 | 207 #define CLASS_INJECTED_FIELDS(macro) \ |
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208 macro(java_lang_Class, klass, intptr_signature, false) \ |
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209 GRAAL_ONLY(macro(java_lang_Class, graal_mirror, object_signature, false))\ |
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210 macro(java_lang_Class, resolved_constructor, intptr_signature, false) \ |
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211 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 212 macro(java_lang_Class, oop_size, int_signature, false) \ |
213 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
214 | |
0 | 215 class java_lang_Class : AllStatic { |
3938 | 216 friend class VMStructs; |
217 | |
0 | 218 private: |
219 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
220 | |
3938 | 221 static int _klass_offset; |
222 static int _resolved_constructor_offset; | |
223 static int _array_klass_offset; | |
0 | 224 |
3938 | 225 static int _oop_size_offset; |
226 static int _static_oop_field_count_offset; | |
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227 #ifdef GRAAL |
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228 static int _graal_mirror_offset; |
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229 #endif |
0 | 230 |
231 static bool offsets_computed; | |
232 static int classRedefinedCount_offset; | |
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233 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 234 |
235 public: | |
3938 | 236 static void compute_offsets(); |
237 | |
0 | 238 // Instance creation |
239 static oop create_mirror(KlassHandle k, TRAPS); | |
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240 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 241 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
242 // Conversion | |
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243 static Klass* as_Klass(oop java_class); |
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244 static void set_klass(oop java_class, Klass* klass); |
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245 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 246 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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247 Klass* refk_oop = NULL; |
710 | 248 BasicType result = as_BasicType(java_class, &refk_oop); |
249 (*reference_klass) = KlassHandle(refk_oop); | |
250 return result; | |
251 } | |
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252 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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253 static void print_signature(oop java_class, outputStream *st); |
0 | 254 // Testing |
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255 static bool is_instance(oop obj) { |
1142 | 256 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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257 } |
0 | 258 static bool is_primitive(oop java_class); |
259 static BasicType primitive_type(oop java_class); | |
260 static oop primitive_mirror(BasicType t); | |
261 // JVM_NewInstance support | |
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262 static Method* resolved_constructor(oop java_class); |
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263 static void set_resolved_constructor(oop java_class, Method* constructor); |
0 | 264 // JVM_NewArray support |
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265 static Klass* array_klass(oop java_class); |
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266 static void set_array_klass(oop java_class, Klass* klass); |
0 | 267 // compiler support for class operations |
3938 | 268 static int klass_offset_in_bytes() { return _klass_offset; } |
269 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
270 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 271 // Support for classRedefinedCount field |
272 static int classRedefinedCount(oop the_class_mirror); | |
273 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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274 |
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275 static int oop_size(oop java_class); |
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276 static void set_oop_size(oop java_class, int size); |
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277 static int static_oop_field_count(oop java_class); |
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278 static void set_static_oop_field_count(oop java_class, int size); |
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279 |
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280 #ifdef GRAAL |
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281 static oop graal_mirror(oop java_class); |
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282 static int graal_mirror_offset_in_bytes() { return _graal_mirror_offset; } |
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283 #endif |
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284 |
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285 static GrowableArray<Klass*>* fixup_mirror_list() { |
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286 return _fixup_mirror_list; |
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287 } |
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288 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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289 _fixup_mirror_list = v; |
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290 } |
0 | 291 // Debugging |
292 friend class JavaClasses; | |
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293 friend class InstanceKlass; // verification code accesses offsets |
0 | 294 friend class ClassFileParser; // access to number_of_fake_fields |
295 }; | |
296 | |
297 // Interface to java.lang.Thread objects | |
298 | |
299 class java_lang_Thread : AllStatic { | |
300 private: | |
301 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
302 // so we compute the offsets at startup rather than hard-wiring them. | |
303 static int _name_offset; | |
304 static int _group_offset; | |
305 static int _contextClassLoader_offset; | |
306 static int _inheritedAccessControlContext_offset; | |
307 static int _priority_offset; | |
308 static int _eetop_offset; | |
309 static int _daemon_offset; | |
310 static int _stillborn_offset; | |
311 static int _stackSize_offset; | |
312 static int _tid_offset; | |
313 static int _thread_status_offset; | |
314 static int _park_blocker_offset; | |
315 static int _park_event_offset ; | |
316 | |
317 static void compute_offsets(); | |
318 | |
319 public: | |
320 // Instance creation | |
321 static oop create(); | |
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322 static int java_thread_offset_in_bytes() { return _eetop_offset; } |
0 | 323 // Returns the JavaThread associated with the thread obj |
324 static JavaThread* thread(oop java_thread); | |
325 // Set JavaThread for instance | |
326 static void set_thread(oop java_thread, JavaThread* thread); | |
327 // Name | |
328 static typeArrayOop name(oop java_thread); | |
329 static void set_name(oop java_thread, typeArrayOop name); | |
330 // Priority | |
331 static ThreadPriority priority(oop java_thread); | |
332 static void set_priority(oop java_thread, ThreadPriority priority); | |
333 // Thread group | |
334 static oop threadGroup(oop java_thread); | |
335 // Stillborn | |
336 static bool is_stillborn(oop java_thread); | |
337 static void set_stillborn(oop java_thread); | |
338 // Alive (NOTE: this is not really a field, but provides the correct | |
339 // definition without doing a Java call) | |
340 static bool is_alive(oop java_thread); | |
341 // Daemon | |
342 static bool is_daemon(oop java_thread); | |
343 static void set_daemon(oop java_thread); | |
344 // Context ClassLoader | |
345 static oop context_class_loader(oop java_thread); | |
346 // Control context | |
347 static oop inherited_access_control_context(oop java_thread); | |
348 // Stack size hint | |
349 static jlong stackSize(oop java_thread); | |
350 // Thread ID | |
351 static jlong thread_id(oop java_thread); | |
352 | |
353 // Blocker object responsible for thread parking | |
354 static oop park_blocker(oop java_thread); | |
355 | |
356 // Pointer to type-stable park handler, encoded as jlong. | |
357 // Should be set when apparently null | |
358 // For details, see unsafe.cpp Unsafe_Unpark | |
359 static jlong park_event(oop java_thread); | |
360 static bool set_park_event(oop java_thread, jlong ptr); | |
361 | |
362 // Java Thread Status for JVMTI and M&M use. | |
363 // This thread status info is saved in threadStatus field of | |
364 // java.lang.Thread java class. | |
365 enum ThreadStatus { | |
366 NEW = 0, | |
367 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
368 JVMTI_THREAD_STATE_RUNNABLE, | |
369 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
370 JVMTI_THREAD_STATE_WAITING + | |
371 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
372 JVMTI_THREAD_STATE_SLEEPING, | |
373 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
374 JVMTI_THREAD_STATE_WAITING + | |
375 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
376 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
377 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
378 JVMTI_THREAD_STATE_WAITING + | |
379 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
380 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
381 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
382 JVMTI_THREAD_STATE_WAITING + | |
383 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
384 JVMTI_THREAD_STATE_PARKED, | |
385 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
386 JVMTI_THREAD_STATE_WAITING + | |
387 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
388 JVMTI_THREAD_STATE_PARKED, | |
389 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
390 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
391 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
392 }; | |
393 // Write thread status info to threadStatus field of java.lang.Thread. | |
394 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
395 // Read thread status info from threadStatus field of java.lang.Thread. | |
396 static ThreadStatus get_thread_status(oop java_thread_oop); | |
397 | |
398 static const char* thread_status_name(oop java_thread_oop); | |
399 | |
400 // Debugging | |
401 friend class JavaClasses; | |
402 }; | |
403 | |
404 // Interface to java.lang.ThreadGroup objects | |
405 | |
406 class java_lang_ThreadGroup : AllStatic { | |
407 private: | |
408 static int _parent_offset; | |
409 static int _name_offset; | |
410 static int _threads_offset; | |
411 static int _groups_offset; | |
412 static int _maxPriority_offset; | |
413 static int _destroyed_offset; | |
414 static int _daemon_offset; | |
415 static int _vmAllowSuspension_offset; | |
416 static int _nthreads_offset; | |
417 static int _ngroups_offset; | |
418 | |
419 static void compute_offsets(); | |
420 | |
421 public: | |
422 // parent ThreadGroup | |
423 static oop parent(oop java_thread_group); | |
424 // name | |
425 static typeArrayOop name(oop java_thread_group); | |
426 // ("name as oop" accessor is not necessary) | |
427 // Number of threads in group | |
428 static int nthreads(oop java_thread_group); | |
429 // threads | |
430 static objArrayOop threads(oop java_thread_group); | |
431 // Number of threads in group | |
432 static int ngroups(oop java_thread_group); | |
433 // groups | |
434 static objArrayOop groups(oop java_thread_group); | |
435 // maxPriority in group | |
436 static ThreadPriority maxPriority(oop java_thread_group); | |
437 // Destroyed | |
438 static bool is_destroyed(oop java_thread_group); | |
439 // Daemon | |
440 static bool is_daemon(oop java_thread_group); | |
441 // vmAllowSuspension | |
442 static bool is_vmAllowSuspension(oop java_thread_group); | |
443 // Debugging | |
444 friend class JavaClasses; | |
445 }; | |
446 | |
447 | |
448 | |
449 // Interface to java.lang.Throwable objects | |
450 | |
451 class java_lang_Throwable: AllStatic { | |
452 friend class BacktraceBuilder; | |
453 | |
454 private: | |
455 // Offsets | |
456 enum { | |
457 hc_backtrace_offset = 0, | |
458 hc_detailMessage_offset = 1, | |
459 hc_cause_offset = 2, // New since 1.4 | |
460 hc_stackTrace_offset = 3 // New since 1.4 | |
461 }; | |
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462 enum { |
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463 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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464 }; |
0 | 465 // Trace constants |
466 enum { | |
467 trace_methods_offset = 0, | |
468 trace_bcis_offset = 1, | |
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469 trace_mirrors_offset = 2, |
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470 trace_next_offset = 3, |
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471 trace_size = 4, |
0 | 472 trace_chunk_size = 32 |
473 }; | |
474 | |
475 static int backtrace_offset; | |
476 static int detailMessage_offset; | |
477 static int cause_offset; | |
478 static int stackTrace_offset; | |
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479 static int static_unassigned_stacktrace_offset; |
0 | 480 |
481 // Printing | |
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482 static char* print_stack_element_to_buffer(Method* method, int bci); |
0 | 483 static void print_to_stream(Handle stream, const char* str); |
484 // StackTrace (programmatic access, new since 1.4) | |
485 static void clear_stacktrace(oop throwable); | |
486 // No stack trace available | |
487 static const char* no_stack_trace_message(); | |
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488 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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489 static void set_stacktrace(oop throwable, oop st_element_array); |
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490 static oop unassigned_stacktrace(); |
0 | 491 |
492 public: | |
493 // Backtrace | |
494 static oop backtrace(oop throwable); | |
495 static void set_backtrace(oop throwable, oop value); | |
496 // Needed by JVMTI to filter out this internal field. | |
497 static int get_backtrace_offset() { return backtrace_offset;} | |
498 static int get_detailMessage_offset() { return detailMessage_offset;} | |
499 // Message | |
500 static oop message(oop throwable); | |
501 static oop message(Handle throwable); | |
502 static void set_message(oop throwable, oop value); | |
503 // Print stack trace stored in exception by call-back to Java | |
504 // Note: this is no longer used in Merlin, but we still suppport | |
505 // it for compatibility. | |
506 static void print_stack_trace(oop throwable, oop print_stream); | |
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507 static void print_stack_element(Handle stream, Method* method, int bci); |
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508 static void print_stack_element(outputStream *st, Method* method, int bci); |
0 | 509 static void print_stack_usage(Handle stream); |
510 | |
511 // Allocate space for backtrace (created but stack trace not filled in) | |
512 static void allocate_backtrace(Handle throwable, TRAPS); | |
513 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
514 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
515 // Fill in current stack trace, can cause GC | |
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516 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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517 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 518 // Programmatic access to stack trace |
519 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
520 static int get_stack_trace_depth(oop throwable, TRAPS); | |
521 // Printing | |
522 static void print(oop throwable, outputStream* st); | |
523 static void print(Handle throwable, outputStream* st); | |
524 static void print_stack_trace(oop throwable, outputStream* st); | |
525 // Debugging | |
526 friend class JavaClasses; | |
527 }; | |
528 | |
529 | |
530 // Interface to java.lang.reflect.AccessibleObject objects | |
531 | |
532 class java_lang_reflect_AccessibleObject: AllStatic { | |
533 private: | |
534 // Note that to reduce dependencies on the JDK we compute these | |
535 // offsets at run-time. | |
536 static int override_offset; | |
537 | |
538 static void compute_offsets(); | |
539 | |
540 public: | |
541 // Accessors | |
542 static jboolean override(oop reflect); | |
543 static void set_override(oop reflect, jboolean value); | |
544 | |
545 // Debugging | |
546 friend class JavaClasses; | |
547 }; | |
548 | |
549 | |
550 // Interface to java.lang.reflect.Method objects | |
551 | |
552 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
553 private: | |
554 // Note that to reduce dependencies on the JDK we compute these | |
555 // offsets at run-time. | |
556 static int clazz_offset; | |
557 static int name_offset; | |
558 static int returnType_offset; | |
559 static int parameterTypes_offset; | |
560 static int exceptionTypes_offset; | |
561 static int slot_offset; | |
562 static int modifiers_offset; | |
563 static int signature_offset; | |
564 static int annotations_offset; | |
565 static int parameter_annotations_offset; | |
566 static int annotation_default_offset; | |
567 | |
568 static void compute_offsets(); | |
569 | |
570 public: | |
571 // Allocation | |
572 static Handle create(TRAPS); | |
573 | |
574 // Accessors | |
575 static oop clazz(oop reflect); | |
576 static void set_clazz(oop reflect, oop value); | |
577 | |
578 static oop name(oop method); | |
579 static void set_name(oop method, oop value); | |
580 | |
581 static oop return_type(oop method); | |
582 static void set_return_type(oop method, oop value); | |
583 | |
584 static oop parameter_types(oop method); | |
585 static void set_parameter_types(oop method, oop value); | |
586 | |
587 static oop exception_types(oop method); | |
588 static void set_exception_types(oop method, oop value); | |
589 | |
590 static int slot(oop reflect); | |
591 static void set_slot(oop reflect, int value); | |
592 | |
593 static int modifiers(oop method); | |
594 static void set_modifiers(oop method, int value); | |
595 | |
596 static bool has_signature_field(); | |
597 static oop signature(oop method); | |
598 static void set_signature(oop method, oop value); | |
599 | |
600 static bool has_annotations_field(); | |
601 static oop annotations(oop method); | |
602 static void set_annotations(oop method, oop value); | |
603 | |
604 static bool has_parameter_annotations_field(); | |
605 static oop parameter_annotations(oop method); | |
606 static void set_parameter_annotations(oop method, oop value); | |
607 | |
608 static bool has_annotation_default_field(); | |
609 static oop annotation_default(oop method); | |
610 static void set_annotation_default(oop method, oop value); | |
611 | |
612 // Debugging | |
613 friend class JavaClasses; | |
614 }; | |
615 | |
616 | |
617 // Interface to java.lang.reflect.Constructor objects | |
618 | |
619 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
620 private: | |
621 // Note that to reduce dependencies on the JDK we compute these | |
622 // offsets at run-time. | |
623 static int clazz_offset; | |
624 static int parameterTypes_offset; | |
625 static int exceptionTypes_offset; | |
626 static int slot_offset; | |
627 static int modifiers_offset; | |
628 static int signature_offset; | |
629 static int annotations_offset; | |
630 static int parameter_annotations_offset; | |
631 | |
632 static void compute_offsets(); | |
633 | |
634 public: | |
635 // Allocation | |
636 static Handle create(TRAPS); | |
637 | |
638 // Accessors | |
639 static oop clazz(oop reflect); | |
640 static void set_clazz(oop reflect, oop value); | |
641 | |
642 static oop parameter_types(oop constructor); | |
643 static void set_parameter_types(oop constructor, oop value); | |
644 | |
645 static oop exception_types(oop constructor); | |
646 static void set_exception_types(oop constructor, oop value); | |
647 | |
648 static int slot(oop reflect); | |
649 static void set_slot(oop reflect, int value); | |
650 | |
651 static int modifiers(oop constructor); | |
652 static void set_modifiers(oop constructor, int value); | |
653 | |
654 static bool has_signature_field(); | |
655 static oop signature(oop constructor); | |
656 static void set_signature(oop constructor, oop value); | |
657 | |
658 static bool has_annotations_field(); | |
659 static oop annotations(oop constructor); | |
660 static void set_annotations(oop constructor, oop value); | |
661 | |
662 static bool has_parameter_annotations_field(); | |
663 static oop parameter_annotations(oop method); | |
664 static void set_parameter_annotations(oop method, oop value); | |
665 | |
666 // Debugging | |
667 friend class JavaClasses; | |
668 }; | |
669 | |
670 | |
671 // Interface to java.lang.reflect.Field objects | |
672 | |
673 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
674 private: | |
675 // Note that to reduce dependencies on the JDK we compute these | |
676 // offsets at run-time. | |
677 static int clazz_offset; | |
678 static int name_offset; | |
679 static int type_offset; | |
680 static int slot_offset; | |
681 static int modifiers_offset; | |
682 static int signature_offset; | |
683 static int annotations_offset; | |
684 | |
685 static void compute_offsets(); | |
686 | |
687 public: | |
688 // Allocation | |
689 static Handle create(TRAPS); | |
690 | |
691 // Accessors | |
692 static oop clazz(oop reflect); | |
693 static void set_clazz(oop reflect, oop value); | |
694 | |
695 static oop name(oop field); | |
696 static void set_name(oop field, oop value); | |
697 | |
698 static oop type(oop field); | |
699 static void set_type(oop field, oop value); | |
700 | |
701 static int slot(oop reflect); | |
702 static void set_slot(oop reflect, int value); | |
703 | |
704 static int modifiers(oop field); | |
705 static void set_modifiers(oop field, int value); | |
706 | |
707 static bool has_signature_field(); | |
708 static oop signature(oop constructor); | |
709 static void set_signature(oop constructor, oop value); | |
710 | |
711 static bool has_annotations_field(); | |
712 static oop annotations(oop constructor); | |
713 static void set_annotations(oop constructor, oop value); | |
714 | |
715 static bool has_parameter_annotations_field(); | |
716 static oop parameter_annotations(oop method); | |
717 static void set_parameter_annotations(oop method, oop value); | |
718 | |
719 static bool has_annotation_default_field(); | |
720 static oop annotation_default(oop method); | |
721 static void set_annotation_default(oop method, oop value); | |
722 | |
723 // Debugging | |
724 friend class JavaClasses; | |
725 }; | |
726 | |
727 // Interface to sun.reflect.ConstantPool objects | |
728 class sun_reflect_ConstantPool { | |
729 private: | |
730 // Note that to reduce dependencies on the JDK we compute these | |
731 // offsets at run-time. | |
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732 static int _oop_offset; |
0 | 733 |
734 static void compute_offsets(); | |
735 | |
736 public: | |
737 // Allocation | |
738 static Handle create(TRAPS); | |
739 | |
740 // Accessors | |
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741 static void set_cp(oop reflect, ConstantPool* value); |
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742 static int oop_offset() { |
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743 return _oop_offset; |
0 | 744 } |
745 | |
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746 static ConstantPool* get_cp(oop reflect); |
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747 |
0 | 748 // Debugging |
749 friend class JavaClasses; | |
750 }; | |
751 | |
752 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
753 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
754 private: | |
755 static int _base_offset; | |
756 static void compute_offsets(); | |
757 | |
758 public: | |
759 static int base_offset() { | |
760 return _base_offset; | |
761 } | |
762 | |
763 // Debugging | |
764 friend class JavaClasses; | |
765 }; | |
766 | |
767 // Interface to java.lang primitive type boxing objects: | |
768 // - java.lang.Boolean | |
769 // - java.lang.Character | |
770 // - java.lang.Float | |
771 // - java.lang.Double | |
772 // - java.lang.Byte | |
773 // - java.lang.Short | |
774 // - java.lang.Integer | |
775 // - java.lang.Long | |
776 | |
777 // This could be separated out into 8 individual classes. | |
778 | |
779 class java_lang_boxing_object: AllStatic { | |
780 private: | |
781 enum { | |
782 hc_value_offset = 0 | |
783 }; | |
784 static int value_offset; | |
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785 static int long_value_offset; |
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787 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 788 public: |
789 // Allocation. Returns a boxed value, or NULL for invalid type. | |
790 static oop create(BasicType type, jvalue* value, TRAPS); | |
791 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
792 static BasicType get_value(oop box, jvalue* value); | |
793 static BasicType set_value(oop box, jvalue* value); | |
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794 static BasicType basic_type(oop box); |
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795 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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796 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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797 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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798 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 799 |
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800 static int value_offset_in_bytes(BasicType type) { |
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801 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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802 value_offset; |
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803 } |
0 | 804 |
805 // Debugging | |
806 friend class JavaClasses; | |
807 }; | |
808 | |
809 | |
810 | |
811 // Interface to java.lang.ref.Reference objects | |
812 | |
813 class java_lang_ref_Reference: AllStatic { | |
814 public: | |
815 enum { | |
816 hc_referent_offset = 0, | |
817 hc_queue_offset = 1, | |
818 hc_next_offset = 2, | |
819 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
820 }; | |
821 enum { | |
822 hc_static_lock_offset = 0, | |
823 hc_static_pending_offset = 1 | |
824 }; | |
825 | |
826 static int referent_offset; | |
827 static int queue_offset; | |
828 static int next_offset; | |
829 static int discovered_offset; | |
830 static int static_lock_offset; | |
831 static int static_pending_offset; | |
832 static int number_of_fake_oop_fields; | |
833 | |
834 // Accessors | |
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835 static oop referent(oop ref) { |
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836 return ref->obj_field(referent_offset); |
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837 } |
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838 static void set_referent(oop ref, oop value) { |
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839 ref->obj_field_put(referent_offset, value); |
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840 } |
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841 static void set_referent_raw(oop ref, oop value) { |
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842 ref->obj_field_put_raw(referent_offset, value); |
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843 } |
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844 static HeapWord* referent_addr(oop ref) { |
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845 return ref->obj_field_addr<HeapWord>(referent_offset); |
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846 } |
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847 static oop next(oop ref) { |
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848 return ref->obj_field(next_offset); |
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849 } |
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850 static void set_next(oop ref, oop value) { |
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851 ref->obj_field_put(next_offset, value); |
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852 } |
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853 static void set_next_raw(oop ref, oop value) { |
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854 ref->obj_field_put_raw(next_offset, value); |
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855 } |
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856 static HeapWord* next_addr(oop ref) { |
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857 return ref->obj_field_addr<HeapWord>(next_offset); |
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858 } |
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859 static oop discovered(oop ref) { |
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860 return ref->obj_field(discovered_offset); |
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861 } |
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862 static void set_discovered(oop ref, oop value) { |
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863 ref->obj_field_put(discovered_offset, value); |
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864 } |
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865 static void set_discovered_raw(oop ref, oop value) { |
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866 ref->obj_field_put_raw(discovered_offset, value); |
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867 } |
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868 static HeapWord* discovered_addr(oop ref) { |
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869 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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870 } |
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871 // Accessors for statics |
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872 static oop pending_list_lock(); |
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873 static oop pending_list(); |
0 | 874 |
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875 static HeapWord* pending_list_lock_addr(); |
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876 static HeapWord* pending_list_addr(); |
0 | 877 }; |
878 | |
879 | |
880 // Interface to java.lang.ref.SoftReference objects | |
881 | |
882 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
883 public: | |
884 enum { | |
885 // The timestamp is a long field and may need to be adjusted for alignment. | |
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886 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 887 }; |
888 enum { | |
889 hc_static_clock_offset = 0 | |
890 }; | |
891 | |
892 static int timestamp_offset; | |
893 static int static_clock_offset; | |
894 | |
895 // Accessors | |
896 static jlong timestamp(oop ref); | |
897 | |
898 // Accessors for statics | |
899 static jlong clock(); | |
900 static void set_clock(jlong value); | |
901 }; | |
902 | |
903 | |
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904 // Interface to java.lang.invoke.MethodHandle objects |
710 | 905 |
906 class MethodHandleEntry; | |
907 | |
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908 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 909 friend class JavaClasses; |
910 | |
911 private: | |
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912 static int _type_offset; // the MethodType of this MH |
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913 static int _form_offset; // the LambdaForm of this MH |
710 | 914 |
915 static void compute_offsets(); | |
916 | |
917 public: | |
918 // Accessors | |
919 static oop type(oop mh); | |
920 static void set_type(oop mh, oop mtype); | |
921 | |
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922 static oop form(oop mh); |
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923 static void set_form(oop mh, oop lform); |
710 | 924 |
925 // Testers | |
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926 static bool is_subclass(Klass* klass) { |
6983 | 927 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 928 } |
929 static bool is_instance(oop obj) { | |
930 return obj != NULL && is_subclass(obj->klass()); | |
931 } | |
932 | |
933 // Accessors for code generation: | |
934 static int type_offset_in_bytes() { return _type_offset; } | |
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935 static int form_offset_in_bytes() { return _form_offset; } |
710 | 936 }; |
937 | |
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938 // Interface to java.lang.invoke.LambdaForm objects |
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939 // (These are a private interface for managing adapter code generation.) |
3938 | 940 |
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941 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 942 friend class JavaClasses; |
943 | |
944 private: | |
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945 static int _vmentry_offset; // type is MemberName |
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946 |
710 | 947 static void compute_offsets(); |
948 | |
949 public: | |
950 // Accessors | |
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951 static oop vmentry(oop lform); |
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952 static void set_vmentry(oop lform, oop invoker); |
710 | 953 |
954 // Testers | |
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955 static bool is_subclass(Klass* klass) { |
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956 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 957 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 958 } |
959 static bool is_instance(oop obj) { | |
960 return obj != NULL && is_subclass(obj->klass()); | |
961 } | |
962 | |
963 // Accessors for code generation: | |
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964 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 965 }; |
966 | |
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967 |
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968 // Interface to java.lang.invoke.MemberName objects |
710 | 969 // (These are a private interface for Java code to query the class hierarchy.) |
970 | |
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971 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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972 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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973 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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974 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 975 |
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976 class java_lang_invoke_MemberName: AllStatic { |
710 | 977 friend class JavaClasses; |
978 | |
979 private: | |
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980 // From java.lang.invoke.MemberName: |
710 | 981 // private Class<?> clazz; // class in which the method is defined |
982 // private String name; // may be null if not yet materialized | |
983 // private Object type; // may be null if not yet materialized | |
984 // private int flags; // modifier bits; see reflect.Modifier | |
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985 // private intptr vmtarget; // VM-specific target value |
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986 // private intptr_t vmindex; // member index within class or interface |
710 | 987 static int _clazz_offset; |
988 static int _name_offset; | |
989 static int _type_offset; | |
990 static int _flags_offset; | |
991 static int _vmtarget_offset; | |
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992 static int _vmloader_offset; |
710 | 993 static int _vmindex_offset; |
994 | |
995 static void compute_offsets(); | |
996 | |
997 public: | |
998 // Accessors | |
999 static oop clazz(oop mname); | |
1000 static void set_clazz(oop mname, oop clazz); | |
1001 | |
1002 static oop type(oop mname); | |
1003 static void set_type(oop mname, oop type); | |
1004 | |
1005 static oop name(oop mname); | |
1006 static void set_name(oop mname, oop name); | |
1007 | |
1008 static int flags(oop mname); | |
1009 static void set_flags(oop mname, int flags); | |
1010 | |
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1011 static Metadata* vmtarget(oop mname); |
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1012 static void set_vmtarget(oop mname, Metadata* target); |
710 | 1013 |
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1014 static intptr_t vmindex(oop mname); |
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1015 static void set_vmindex(oop mname, intptr_t index); |
710 | 1016 |
1017 // Testers | |
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1018 static bool is_subclass(Klass* klass) { |
6983 | 1019 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1020 } |
1021 static bool is_instance(oop obj) { | |
1022 return obj != NULL && is_subclass(obj->klass()); | |
1023 } | |
1024 | |
1025 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1026 enum { | |
1027 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
1028 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
1029 MN_IS_FIELD = 0x00040000, // field | |
1030 MN_IS_TYPE = 0x00080000, // nested type | |
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1031 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1032 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1033 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1034 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1035 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1036 }; |
1037 | |
1038 // Accessors for code generation: | |
1039 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1040 static int type_offset_in_bytes() { return _type_offset; } | |
1041 static int name_offset_in_bytes() { return _name_offset; } | |
1042 static int flags_offset_in_bytes() { return _flags_offset; } | |
1043 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1044 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1045 }; | |
1046 | |
1047 | |
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1048 // Interface to java.lang.invoke.MethodType objects |
710 | 1049 |
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1050 class java_lang_invoke_MethodType: AllStatic { |
710 | 1051 friend class JavaClasses; |
1052 | |
1053 private: | |
1054 static int _rtype_offset; | |
1055 static int _ptypes_offset; | |
1056 | |
1057 static void compute_offsets(); | |
1058 | |
1059 public: | |
1060 // Accessors | |
1061 static oop rtype(oop mt); | |
1062 static objArrayOop ptypes(oop mt); | |
1063 | |
1064 static oop ptype(oop mt, int index); | |
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1065 static int ptype_count(oop mt); |
710 | 1066 |
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1067 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1068 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1069 |
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1070 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1071 static void print_signature(oop mt, outputStream* st); |
1072 | |
1073 static bool is_instance(oop obj) { | |
1074 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1075 } | |
1076 | |
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1077 static bool equals(oop mt1, oop mt2); |
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1078 |
710 | 1079 // Accessors for code generation: |
1080 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1081 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1082 }; | |
1083 | |
1084 | |
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1085 // Interface to java.lang.invoke.CallSite objects |
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1086 |
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1087 class java_lang_invoke_CallSite: AllStatic { |
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1088 friend class JavaClasses; |
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1089 |
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1090 private: |
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1091 static int _target_offset; |
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1092 |
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1093 static void compute_offsets(); |
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1094 |
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1095 public: |
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1096 // Accessors |
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1097 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1098 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1099 |
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1100 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1101 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1102 |
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1103 // Testers |
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1104 static bool is_subclass(Klass* klass) { |
6983 | 1105 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
1135
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1106 } |
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1107 static bool is_instance(oop obj) { |
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1108 return obj != NULL && is_subclass(obj->klass()); |
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1109 } |
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1110 |
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1111 // Accessors for code generation: |
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1112 static int target_offset_in_bytes() { return _target_offset; } |
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1113 }; |
710 | 1114 |
1115 | |
0 | 1116 // Interface to java.security.AccessControlContext objects |
1117 | |
1118 class java_security_AccessControlContext: AllStatic { | |
1119 private: | |
1120 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1121 // so we compute the offsets at startup rather than hard-wiring them. | |
1122 static int _context_offset; | |
1123 static int _privilegedContext_offset; | |
1124 static int _isPrivileged_offset; | |
1125 | |
1126 static void compute_offsets(); | |
1127 public: | |
1128 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1129 | |
1130 // Debugging/initialization | |
1131 friend class JavaClasses; | |
1132 }; | |
1133 | |
1134 | |
1135 // Interface to java.lang.ClassLoader objects | |
1136 | |
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1137 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1138 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1139 |
0 | 1140 class java_lang_ClassLoader : AllStatic { |
1141 private: | |
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1142 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1143 enum { |
1144 hc_parent_offset = 0 | |
1145 }; | |
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1146 static int _loader_data_offset; |
3938 | 1147 static bool offsets_computed; |
0 | 1148 static int parent_offset; |
3938 | 1149 static int parallelCapable_offset; |
1150 | |
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1151 public: |
3938 | 1152 static void compute_offsets(); |
0 | 1153 |
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1154 static ClassLoaderData** loader_data_addr(oop loader); |
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1155 static ClassLoaderData* loader_data(oop loader); |
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1156 |
0 | 1157 static oop parent(oop loader); |
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1158 static bool isAncestor(oop loader, oop cl); |
0 | 1159 |
3938 | 1160 // Support for parallelCapable field |
1161 static bool parallelCapable(oop the_class_mirror); | |
1162 | |
0 | 1163 static bool is_trusted_loader(oop loader); |
1164 | |
1165 // Fix for 4474172 | |
1166 static oop non_reflection_class_loader(oop loader); | |
1167 | |
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1168 // Testers |
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1169 static bool is_subclass(Klass* klass) { |
6983 | 1170 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1171 } |
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1172 static bool is_instance(oop obj) { |
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1173 return obj != NULL && is_subclass(obj->klass()); |
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1174 } |
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1175 |
0 | 1176 // Debugging |
1177 friend class JavaClasses; | |
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1178 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1179 }; |
1180 | |
1181 | |
1182 // Interface to java.lang.System objects | |
1183 | |
1184 class java_lang_System : AllStatic { | |
1185 private: | |
1186 enum { | |
1187 hc_static_in_offset = 0, | |
1188 hc_static_out_offset = 1, | |
1189 hc_static_err_offset = 2 | |
1190 }; | |
1191 | |
1192 static int static_in_offset; | |
1193 static int static_out_offset; | |
1194 static int static_err_offset; | |
1195 | |
1196 public: | |
1197 static int in_offset_in_bytes(); | |
1198 static int out_offset_in_bytes(); | |
1199 static int err_offset_in_bytes(); | |
1200 | |
1201 // Debugging | |
1202 friend class JavaClasses; | |
1203 }; | |
1204 | |
1205 | |
1206 // Interface to java.lang.StackTraceElement objects | |
1207 | |
1208 class java_lang_StackTraceElement: AllStatic { | |
1209 private: | |
1210 enum { | |
1211 hc_declaringClass_offset = 0, | |
1212 hc_methodName_offset = 1, | |
1213 hc_fileName_offset = 2, | |
1214 hc_lineNumber_offset = 3 | |
1215 }; | |
1216 | |
1217 static int declaringClass_offset; | |
1218 static int methodName_offset; | |
1219 static int fileName_offset; | |
1220 static int lineNumber_offset; | |
1221 | |
1222 public: | |
1223 // Setters | |
1224 static void set_declaringClass(oop element, oop value); | |
1225 static void set_methodName(oop element, oop value); | |
1226 static void set_fileName(oop element, oop value); | |
1227 static void set_lineNumber(oop element, int value); | |
1228 | |
1229 // Create an instance of StackTraceElement | |
1230 static oop create(methodHandle m, int bci, TRAPS); | |
1231 | |
1232 // Debugging | |
1233 friend class JavaClasses; | |
1234 }; | |
1235 | |
1236 | |
1237 // Interface to java.lang.AssertionStatusDirectives objects | |
1238 | |
1239 class java_lang_AssertionStatusDirectives: AllStatic { | |
1240 private: | |
1241 enum { | |
1242 hc_classes_offset, | |
1243 hc_classEnabled_offset, | |
1244 hc_packages_offset, | |
1245 hc_packageEnabled_offset, | |
1246 hc_deflt_offset | |
1247 }; | |
1248 | |
1249 static int classes_offset; | |
1250 static int classEnabled_offset; | |
1251 static int packages_offset; | |
1252 static int packageEnabled_offset; | |
1253 static int deflt_offset; | |
1254 | |
1255 public: | |
1256 // Setters | |
1257 static void set_classes(oop obj, oop val); | |
1258 static void set_classEnabled(oop obj, oop val); | |
1259 static void set_packages(oop obj, oop val); | |
1260 static void set_packageEnabled(oop obj, oop val); | |
1261 static void set_deflt(oop obj, bool val); | |
1262 // Debugging | |
1263 friend class JavaClasses; | |
1264 }; | |
1265 | |
1266 | |
1267 class java_nio_Buffer: AllStatic { | |
1268 private: | |
1269 static int _limit_offset; | |
1270 | |
1271 public: | |
1272 static int limit_offset(); | |
1273 static void compute_offsets(); | |
1274 }; | |
1275 | |
1276 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1277 private: | |
1278 static int _owner_offset; | |
1279 public: | |
1280 static void initialize(TRAPS); | |
1281 static oop get_owner_threadObj(oop obj); | |
1282 }; | |
1283 | |
3938 | 1284 // Use to declare fields that need to be injected into Java classes |
1285 // for the JVM to use. The name_index and signature_index are | |
1286 // declared in vmSymbols. The may_be_java flag is used to declare | |
1287 // fields that might already exist in Java but should be injected if | |
1288 // they don't. Otherwise the field is unconditionally injected and | |
1289 // the JVM uses the injected one. This is to ensure that name | |
1290 // collisions don't occur. In general may_be_java should be false | |
1291 // unless there's a good reason. | |
1292 | |
1293 class InjectedField { | |
1294 public: | |
1295 const SystemDictionary::WKID klass_id; | |
1296 const vmSymbols::SID name_index; | |
1297 const vmSymbols::SID signature_index; | |
1298 const bool may_be_java; | |
1299 | |
1300 | |
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1301 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1302 Symbol* name() const { return lookup_symbol(name_index); } |
1303 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1304 | |
1305 int compute_offset(); | |
1306 | |
1307 // Find the Symbol for this index | |
1308 static Symbol* lookup_symbol(int symbol_index) { | |
1309 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1310 } | |
1311 }; | |
1312 | |
1313 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1314 klass##_##name##_enum, | |
1315 | |
1316 #define ALL_INJECTED_FIELDS(macro) \ | |
1317 CLASS_INJECTED_FIELDS(macro) \ | |
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1318 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1319 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1320 |
0 | 1321 // Interface to hard-coded offset checking |
1322 | |
1323 class JavaClasses : AllStatic { | |
1324 private: | |
3938 | 1325 |
1326 static InjectedField _injected_fields[]; | |
1327 | |
0 | 1328 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1329 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
132
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1330 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1331 |
0 | 1332 public: |
3938 | 1333 enum InjectedFieldID { |
1334 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1335 MAX_enum | |
1336 }; | |
1337 | |
1338 static int compute_injected_offset(InjectedFieldID id); | |
1339 | |
0 | 1340 static void compute_hard_coded_offsets(); |
1341 static void compute_offsets(); | |
1342 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1343 |
1344 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1345 }; |
1972 | 1346 |
3938 | 1347 #undef DECLARE_INJECTED_FIELD_ENUM |
1348 | |
1972 | 1349 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |