Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 12837:82af7d7a0128
8003420: NPG: make new GC root for pd_set
Summary: Move protection domain oops from system dictionary entries into a seperate set; the system dictionary references entries in that set now. This allows fast iteration during non-classunloading garbage collection. Implementation based on initial prototype from Ioi Lam (iklam).
Reviewed-by: coleenp, iklam
author | tschatzl |
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date | Wed, 09 Oct 2013 10:57:01 +0200 |
parents | 63147986a428 |
children | cefad50507d8 301df27023d4 595c0f60d50d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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); |
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156 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); |
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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 // |
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169 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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170 template <typename T> static unsigned int hash_code(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 } |
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178 static unsigned int hash_code(oop java_string); |
6162 | 179 |
180 // This is the string hash code used by the StringTable, which may be | |
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181 // the same as String.hashCode 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); |
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185 static bool equals(oop str1, oop str2); |
0 | 186 |
187 // Conversion between '.' and '/' formats | |
188 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
189 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
190 | |
191 // Conversion | |
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192 static Symbol* as_symbol(Handle java_string, TRAPS); |
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193 static Symbol* as_symbol_or_null(oop java_string); |
0 | 194 |
195 // Testers | |
196 static bool is_instance(oop obj) { | |
1142 | 197 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 198 } |
199 | |
200 // Debugging | |
201 static void print(Handle java_string, outputStream* st); | |
202 friend class JavaClasses; | |
203 }; | |
204 | |
205 | |
206 // Interface to java.lang.Class objects | |
207 | |
3938 | 208 #define CLASS_INJECTED_FIELDS(macro) \ |
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209 macro(java_lang_Class, klass, intptr_signature, false) \ |
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210 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 211 macro(java_lang_Class, oop_size, int_signature, false) \ |
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212 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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213 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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214 macro(java_lang_Class, init_lock, object_signature, false) \ |
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215 macro(java_lang_Class, signers, object_signature, false) |
3938 | 216 |
0 | 217 class java_lang_Class : AllStatic { |
3938 | 218 friend class VMStructs; |
219 | |
0 | 220 private: |
221 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
222 | |
3938 | 223 static int _klass_offset; |
224 static int _array_klass_offset; | |
0 | 225 |
3938 | 226 static int _oop_size_offset; |
227 static int _static_oop_field_count_offset; | |
0 | 228 |
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229 static int _protection_domain_offset; |
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230 static int _init_lock_offset; |
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231 static int _signers_offset; |
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232 |
0 | 233 static bool offsets_computed; |
234 static int classRedefinedCount_offset; | |
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235 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 236 |
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237 static void set_init_lock(oop java_class, oop init_lock); |
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238 static void set_protection_domain(oop java_class, oop protection_domain); |
0 | 239 public: |
3938 | 240 static void compute_offsets(); |
241 | |
0 | 242 // Instance creation |
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243 static oop create_mirror(KlassHandle k, Handle protection_domain, TRAPS); |
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244 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 245 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
246 // Conversion | |
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247 static Klass* as_Klass(oop java_class); |
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248 static void set_klass(oop java_class, Klass* klass); |
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249 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 250 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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251 Klass* refk_oop = NULL; |
710 | 252 BasicType result = as_BasicType(java_class, &refk_oop); |
253 (*reference_klass) = KlassHandle(refk_oop); | |
254 return result; | |
255 } | |
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256 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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257 static void print_signature(oop java_class, outputStream *st); |
0 | 258 // Testing |
132
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259 static bool is_instance(oop obj) { |
1142 | 260 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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261 } |
0 | 262 static bool is_primitive(oop java_class); |
263 static BasicType primitive_type(oop java_class); | |
264 static oop primitive_mirror(BasicType t); | |
265 // JVM_NewArray support | |
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266 static Klass* array_klass(oop java_class); |
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267 static void set_array_klass(oop java_class, Klass* klass); |
0 | 268 // compiler support for class operations |
3938 | 269 static int klass_offset_in_bytes() { return _klass_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 // Support for embedded per-class oops |
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276 static oop protection_domain(oop java_class); |
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277 static oop init_lock(oop java_class); |
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278 static objArrayOop signers(oop java_class); |
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279 static void set_signers(oop java_class, objArrayOop signers); |
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280 |
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281 static int oop_size(oop java_class); |
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282 static void set_oop_size(oop java_class, int size); |
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283 static int static_oop_field_count(oop java_class); |
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284 static void set_static_oop_field_count(oop java_class, int size); |
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285 |
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286 static GrowableArray<Klass*>* fixup_mirror_list() { |
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287 return _fixup_mirror_list; |
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288 } |
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289 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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290 _fixup_mirror_list = v; |
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291 } |
0 | 292 // Debugging |
293 friend class JavaClasses; | |
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294 friend class InstanceKlass; // verification code accesses offsets |
0 | 295 friend class ClassFileParser; // access to number_of_fake_fields |
296 }; | |
297 | |
298 // Interface to java.lang.Thread objects | |
299 | |
300 class java_lang_Thread : AllStatic { | |
301 private: | |
302 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
303 // so we compute the offsets at startup rather than hard-wiring them. | |
304 static int _name_offset; | |
305 static int _group_offset; | |
306 static int _contextClassLoader_offset; | |
307 static int _inheritedAccessControlContext_offset; | |
308 static int _priority_offset; | |
309 static int _eetop_offset; | |
310 static int _daemon_offset; | |
311 static int _stillborn_offset; | |
312 static int _stackSize_offset; | |
313 static int _tid_offset; | |
314 static int _thread_status_offset; | |
315 static int _park_blocker_offset; | |
316 static int _park_event_offset ; | |
317 | |
318 static void compute_offsets(); | |
319 | |
320 public: | |
321 // Instance creation | |
322 static oop create(); | |
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(Handle mirror, int method, int version, int bci); |
0 | 483 // StackTrace (programmatic access, new since 1.4) |
484 static void clear_stacktrace(oop throwable); | |
485 // No stack trace available | |
486 static const char* no_stack_trace_message(); | |
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487 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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488 static void set_stacktrace(oop throwable, oop st_element_array); |
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489 static oop unassigned_stacktrace(); |
0 | 490 |
491 public: | |
492 // Backtrace | |
493 static oop backtrace(oop throwable); | |
494 static void set_backtrace(oop throwable, oop value); | |
495 // Needed by JVMTI to filter out this internal field. | |
496 static int get_backtrace_offset() { return backtrace_offset;} | |
497 static int get_detailMessage_offset() { return detailMessage_offset;} | |
498 // Message | |
499 static oop message(oop throwable); | |
500 static oop message(Handle throwable); | |
501 static void set_message(oop throwable, oop value); | |
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502 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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503 int version, int bci); |
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504 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
0 | 505 static void print_stack_usage(Handle stream); |
506 | |
507 // Allocate space for backtrace (created but stack trace not filled in) | |
508 static void allocate_backtrace(Handle throwable, TRAPS); | |
509 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
510 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
511 // Fill in current stack trace, can cause GC | |
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512 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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513 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 514 // Programmatic access to stack trace |
515 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
516 static int get_stack_trace_depth(oop throwable, TRAPS); | |
517 // Printing | |
518 static void print(oop throwable, outputStream* st); | |
519 static void print(Handle throwable, outputStream* st); | |
520 static void print_stack_trace(oop throwable, outputStream* st); | |
521 // Debugging | |
522 friend class JavaClasses; | |
523 }; | |
524 | |
525 | |
526 // Interface to java.lang.reflect.AccessibleObject objects | |
527 | |
528 class java_lang_reflect_AccessibleObject: AllStatic { | |
529 private: | |
530 // Note that to reduce dependencies on the JDK we compute these | |
531 // offsets at run-time. | |
532 static int override_offset; | |
533 | |
534 static void compute_offsets(); | |
535 | |
536 public: | |
537 // Accessors | |
538 static jboolean override(oop reflect); | |
539 static void set_override(oop reflect, jboolean value); | |
540 | |
541 // Debugging | |
542 friend class JavaClasses; | |
543 }; | |
544 | |
545 | |
546 // Interface to java.lang.reflect.Method objects | |
547 | |
548 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
549 private: | |
550 // Note that to reduce dependencies on the JDK we compute these | |
551 // offsets at run-time. | |
552 static int clazz_offset; | |
553 static int name_offset; | |
554 static int returnType_offset; | |
555 static int parameterTypes_offset; | |
556 static int exceptionTypes_offset; | |
557 static int slot_offset; | |
558 static int modifiers_offset; | |
559 static int signature_offset; | |
560 static int annotations_offset; | |
561 static int parameter_annotations_offset; | |
562 static int annotation_default_offset; | |
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563 static int type_annotations_offset; |
0 | 564 |
565 static void compute_offsets(); | |
566 | |
567 public: | |
568 // Allocation | |
569 static Handle create(TRAPS); | |
570 | |
571 // Accessors | |
572 static oop clazz(oop reflect); | |
573 static void set_clazz(oop reflect, oop value); | |
574 | |
575 static oop name(oop method); | |
576 static void set_name(oop method, oop value); | |
577 | |
578 static oop return_type(oop method); | |
579 static void set_return_type(oop method, oop value); | |
580 | |
581 static oop parameter_types(oop method); | |
582 static void set_parameter_types(oop method, oop value); | |
583 | |
584 static oop exception_types(oop method); | |
585 static void set_exception_types(oop method, oop value); | |
586 | |
587 static int slot(oop reflect); | |
588 static void set_slot(oop reflect, int value); | |
589 | |
590 static int modifiers(oop method); | |
591 static void set_modifiers(oop method, int value); | |
592 | |
593 static bool has_signature_field(); | |
594 static oop signature(oop method); | |
595 static void set_signature(oop method, oop value); | |
596 | |
597 static bool has_annotations_field(); | |
598 static oop annotations(oop method); | |
599 static void set_annotations(oop method, oop value); | |
600 | |
601 static bool has_parameter_annotations_field(); | |
602 static oop parameter_annotations(oop method); | |
603 static void set_parameter_annotations(oop method, oop value); | |
604 | |
605 static bool has_annotation_default_field(); | |
606 static oop annotation_default(oop method); | |
607 static void set_annotation_default(oop method, oop value); | |
608 | |
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609 static bool has_type_annotations_field(); |
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610 static oop type_annotations(oop method); |
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611 static void set_type_annotations(oop method, oop value); |
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612 |
0 | 613 // Debugging |
614 friend class JavaClasses; | |
615 }; | |
616 | |
617 | |
618 // Interface to java.lang.reflect.Constructor objects | |
619 | |
620 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
621 private: | |
622 // Note that to reduce dependencies on the JDK we compute these | |
623 // offsets at run-time. | |
624 static int clazz_offset; | |
625 static int parameterTypes_offset; | |
626 static int exceptionTypes_offset; | |
627 static int slot_offset; | |
628 static int modifiers_offset; | |
629 static int signature_offset; | |
630 static int annotations_offset; | |
631 static int parameter_annotations_offset; | |
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632 static int type_annotations_offset; |
0 | 633 |
634 static void compute_offsets(); | |
635 | |
636 public: | |
637 // Allocation | |
638 static Handle create(TRAPS); | |
639 | |
640 // Accessors | |
641 static oop clazz(oop reflect); | |
642 static void set_clazz(oop reflect, oop value); | |
643 | |
644 static oop parameter_types(oop constructor); | |
645 static void set_parameter_types(oop constructor, oop value); | |
646 | |
647 static oop exception_types(oop constructor); | |
648 static void set_exception_types(oop constructor, oop value); | |
649 | |
650 static int slot(oop reflect); | |
651 static void set_slot(oop reflect, int value); | |
652 | |
653 static int modifiers(oop constructor); | |
654 static void set_modifiers(oop constructor, int value); | |
655 | |
656 static bool has_signature_field(); | |
657 static oop signature(oop constructor); | |
658 static void set_signature(oop constructor, oop value); | |
659 | |
660 static bool has_annotations_field(); | |
661 static oop annotations(oop constructor); | |
662 static void set_annotations(oop constructor, oop value); | |
663 | |
664 static bool has_parameter_annotations_field(); | |
665 static oop parameter_annotations(oop method); | |
666 static void set_parameter_annotations(oop method, oop value); | |
667 | |
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668 static bool has_type_annotations_field(); |
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669 static oop type_annotations(oop constructor); |
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670 static void set_type_annotations(oop constructor, oop value); |
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671 |
0 | 672 // Debugging |
673 friend class JavaClasses; | |
674 }; | |
675 | |
676 | |
677 // Interface to java.lang.reflect.Field objects | |
678 | |
679 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
680 private: | |
681 // Note that to reduce dependencies on the JDK we compute these | |
682 // offsets at run-time. | |
683 static int clazz_offset; | |
684 static int name_offset; | |
685 static int type_offset; | |
686 static int slot_offset; | |
687 static int modifiers_offset; | |
688 static int signature_offset; | |
689 static int annotations_offset; | |
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690 static int type_annotations_offset; |
0 | 691 |
692 static void compute_offsets(); | |
693 | |
694 public: | |
695 // Allocation | |
696 static Handle create(TRAPS); | |
697 | |
698 // Accessors | |
699 static oop clazz(oop reflect); | |
700 static void set_clazz(oop reflect, oop value); | |
701 | |
702 static oop name(oop field); | |
703 static void set_name(oop field, oop value); | |
704 | |
705 static oop type(oop field); | |
706 static void set_type(oop field, oop value); | |
707 | |
708 static int slot(oop reflect); | |
709 static void set_slot(oop reflect, int value); | |
710 | |
711 static int modifiers(oop field); | |
712 static void set_modifiers(oop field, int value); | |
713 | |
714 static bool has_signature_field(); | |
715 static oop signature(oop constructor); | |
716 static void set_signature(oop constructor, oop value); | |
717 | |
718 static bool has_annotations_field(); | |
719 static oop annotations(oop constructor); | |
720 static void set_annotations(oop constructor, oop value); | |
721 | |
722 static bool has_parameter_annotations_field(); | |
723 static oop parameter_annotations(oop method); | |
724 static void set_parameter_annotations(oop method, oop value); | |
725 | |
726 static bool has_annotation_default_field(); | |
727 static oop annotation_default(oop method); | |
728 static void set_annotation_default(oop method, oop value); | |
729 | |
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730 static bool has_type_annotations_field(); |
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731 static oop type_annotations(oop field); |
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732 static void set_type_annotations(oop field, oop value); |
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733 |
0 | 734 // Debugging |
735 friend class JavaClasses; | |
736 }; | |
737 | |
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738 class java_lang_reflect_Parameter { |
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739 private: |
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740 // Note that to reduce dependencies on the JDK we compute these |
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741 // offsets at run-time. |
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742 static int name_offset; |
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743 static int modifiers_offset; |
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744 static int index_offset; |
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745 static int executable_offset; |
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746 |
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747 static void compute_offsets(); |
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748 |
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749 public: |
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750 // Allocation |
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751 static Handle create(TRAPS); |
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752 |
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753 // Accessors |
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754 static oop name(oop field); |
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755 static void set_name(oop field, oop value); |
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756 |
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757 static int index(oop reflect); |
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758 static void set_index(oop reflect, int value); |
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759 |
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760 static int modifiers(oop reflect); |
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761 static void set_modifiers(oop reflect, int value); |
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762 |
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763 static oop executable(oop constructor); |
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764 static void set_executable(oop constructor, oop value); |
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765 |
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766 friend class JavaClasses; |
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767 }; |
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768 |
0 | 769 // Interface to sun.reflect.ConstantPool objects |
770 class sun_reflect_ConstantPool { | |
771 private: | |
772 // Note that to reduce dependencies on the JDK we compute these | |
773 // offsets at run-time. | |
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774 static int _oop_offset; |
0 | 775 |
776 static void compute_offsets(); | |
777 | |
778 public: | |
779 // Allocation | |
780 static Handle create(TRAPS); | |
781 | |
782 // Accessors | |
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783 static void set_cp(oop reflect, ConstantPool* value); |
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784 static int oop_offset() { |
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785 return _oop_offset; |
0 | 786 } |
787 | |
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788 static ConstantPool* get_cp(oop reflect); |
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789 |
0 | 790 // Debugging |
791 friend class JavaClasses; | |
792 }; | |
793 | |
794 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
795 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
796 private: | |
797 static int _base_offset; | |
798 static void compute_offsets(); | |
799 | |
800 public: | |
801 static int base_offset() { | |
802 return _base_offset; | |
803 } | |
804 | |
805 // Debugging | |
806 friend class JavaClasses; | |
807 }; | |
808 | |
809 // Interface to java.lang primitive type boxing objects: | |
810 // - java.lang.Boolean | |
811 // - java.lang.Character | |
812 // - java.lang.Float | |
813 // - java.lang.Double | |
814 // - java.lang.Byte | |
815 // - java.lang.Short | |
816 // - java.lang.Integer | |
817 // - java.lang.Long | |
818 | |
819 // This could be separated out into 8 individual classes. | |
820 | |
821 class java_lang_boxing_object: AllStatic { | |
822 private: | |
823 enum { | |
824 hc_value_offset = 0 | |
825 }; | |
826 static int value_offset; | |
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827 static int long_value_offset; |
0 | 828 |
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829 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 830 public: |
831 // Allocation. Returns a boxed value, or NULL for invalid type. | |
832 static oop create(BasicType type, jvalue* value, TRAPS); | |
833 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
834 static BasicType get_value(oop box, jvalue* value); | |
835 static BasicType set_value(oop box, jvalue* value); | |
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836 static BasicType basic_type(oop box); |
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837 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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838 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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839 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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840 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 841 |
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842 static int value_offset_in_bytes(BasicType type) { |
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843 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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844 value_offset; |
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845 } |
0 | 846 |
847 // Debugging | |
848 friend class JavaClasses; | |
849 }; | |
850 | |
851 | |
852 | |
853 // Interface to java.lang.ref.Reference objects | |
854 | |
855 class java_lang_ref_Reference: AllStatic { | |
856 public: | |
857 enum { | |
858 hc_referent_offset = 0, | |
859 hc_queue_offset = 1, | |
860 hc_next_offset = 2, | |
861 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
862 }; | |
863 enum { | |
864 hc_static_lock_offset = 0, | |
865 hc_static_pending_offset = 1 | |
866 }; | |
867 | |
868 static int referent_offset; | |
869 static int queue_offset; | |
870 static int next_offset; | |
871 static int discovered_offset; | |
872 static int static_lock_offset; | |
873 static int static_pending_offset; | |
874 static int number_of_fake_oop_fields; | |
875 | |
876 // Accessors | |
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877 static oop referent(oop ref) { |
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878 return ref->obj_field(referent_offset); |
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879 } |
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880 static void set_referent(oop ref, oop value) { |
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881 ref->obj_field_put(referent_offset, value); |
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882 } |
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883 static void set_referent_raw(oop ref, oop value) { |
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884 ref->obj_field_put_raw(referent_offset, value); |
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885 } |
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886 static HeapWord* referent_addr(oop ref) { |
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887 return ref->obj_field_addr<HeapWord>(referent_offset); |
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888 } |
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889 static oop next(oop ref) { |
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890 return ref->obj_field(next_offset); |
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891 } |
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892 static void set_next(oop ref, oop value) { |
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893 ref->obj_field_put(next_offset, value); |
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894 } |
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895 static void set_next_raw(oop ref, oop value) { |
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896 ref->obj_field_put_raw(next_offset, value); |
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897 } |
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898 static HeapWord* next_addr(oop ref) { |
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899 return ref->obj_field_addr<HeapWord>(next_offset); |
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900 } |
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901 static oop discovered(oop ref) { |
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902 return ref->obj_field(discovered_offset); |
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903 } |
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904 static void set_discovered(oop ref, oop value) { |
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905 ref->obj_field_put(discovered_offset, value); |
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906 } |
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907 static void set_discovered_raw(oop ref, oop value) { |
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908 ref->obj_field_put_raw(discovered_offset, value); |
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909 } |
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910 static HeapWord* discovered_addr(oop ref) { |
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911 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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912 } |
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913 // Accessors for statics |
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914 static oop pending_list_lock(); |
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915 static oop pending_list(); |
0 | 916 |
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917 static HeapWord* pending_list_lock_addr(); |
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918 static HeapWord* pending_list_addr(); |
0 | 919 }; |
920 | |
921 | |
922 // Interface to java.lang.ref.SoftReference objects | |
923 | |
924 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
925 public: | |
926 enum { | |
927 // The timestamp is a long field and may need to be adjusted for alignment. | |
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928 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 929 }; |
930 enum { | |
931 hc_static_clock_offset = 0 | |
932 }; | |
933 | |
934 static int timestamp_offset; | |
935 static int static_clock_offset; | |
936 | |
937 // Accessors | |
938 static jlong timestamp(oop ref); | |
939 | |
940 // Accessors for statics | |
941 static jlong clock(); | |
942 static void set_clock(jlong value); | |
943 }; | |
944 | |
945 | |
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946 // Interface to java.lang.invoke.MethodHandle objects |
710 | 947 |
948 class MethodHandleEntry; | |
949 | |
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950 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 951 friend class JavaClasses; |
952 | |
953 private: | |
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954 static int _type_offset; // the MethodType of this MH |
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955 static int _form_offset; // the LambdaForm of this MH |
710 | 956 |
957 static void compute_offsets(); | |
958 | |
959 public: | |
960 // Accessors | |
961 static oop type(oop mh); | |
962 static void set_type(oop mh, oop mtype); | |
963 | |
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964 static oop form(oop mh); |
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965 static void set_form(oop mh, oop lform); |
710 | 966 |
967 // Testers | |
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968 static bool is_subclass(Klass* klass) { |
6983 | 969 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 970 } |
971 static bool is_instance(oop obj) { | |
972 return obj != NULL && is_subclass(obj->klass()); | |
973 } | |
974 | |
975 // Accessors for code generation: | |
976 static int type_offset_in_bytes() { return _type_offset; } | |
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977 static int form_offset_in_bytes() { return _form_offset; } |
710 | 978 }; |
979 | |
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980 // Interface to java.lang.invoke.DirectMethodHandle objects |
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981 |
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982 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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983 friend class JavaClasses; |
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984 |
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985 private: |
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986 static int _member_offset; // the MemberName of this DMH |
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987 |
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988 static void compute_offsets(); |
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989 |
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990 public: |
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991 // Accessors |
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992 static oop member(oop mh); |
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993 |
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994 // Testers |
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995 static bool is_subclass(Klass* klass) { |
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996 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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997 } |
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998 static bool is_instance(oop obj) { |
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999 return obj != NULL && is_subclass(obj->klass()); |
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1000 } |
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1001 |
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1002 // Accessors for code generation: |
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1003 static int member_offset_in_bytes() { return _member_offset; } |
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1004 }; |
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1005 |
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1006 // Interface to java.lang.invoke.LambdaForm objects |
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1007 // (These are a private interface for managing adapter code generation.) |
3938 | 1008 |
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1009 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 1010 friend class JavaClasses; |
1011 | |
1012 private: | |
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1013 static int _vmentry_offset; // type is MemberName |
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1014 |
710 | 1015 static void compute_offsets(); |
1016 | |
1017 public: | |
1018 // Accessors | |
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1019 static oop vmentry(oop lform); |
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1020 static void set_vmentry(oop lform, oop invoker); |
710 | 1021 |
1022 // Testers | |
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1023 static bool is_subclass(Klass* klass) { |
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1024 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 1025 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 1026 } |
1027 static bool is_instance(oop obj) { | |
1028 return obj != NULL && is_subclass(obj->klass()); | |
1029 } | |
1030 | |
1031 // Accessors for code generation: | |
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1032 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 1033 }; |
1034 | |
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1035 |
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1036 // Interface to java.lang.invoke.MemberName objects |
710 | 1037 // (These are a private interface for Java code to query the class hierarchy.) |
1038 | |
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1039 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1040 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1041 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1042 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 1043 |
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1044 class java_lang_invoke_MemberName: AllStatic { |
710 | 1045 friend class JavaClasses; |
1046 | |
1047 private: | |
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1048 // From java.lang.invoke.MemberName: |
710 | 1049 // private Class<?> clazz; // class in which the method is defined |
1050 // private String name; // may be null if not yet materialized | |
1051 // private Object type; // may be null if not yet materialized | |
1052 // private int flags; // modifier bits; see reflect.Modifier | |
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1053 // private intptr vmtarget; // VM-specific target value |
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1054 // private intptr_t vmindex; // member index within class or interface |
710 | 1055 static int _clazz_offset; |
1056 static int _name_offset; | |
1057 static int _type_offset; | |
1058 static int _flags_offset; | |
1059 static int _vmtarget_offset; | |
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1060 static int _vmloader_offset; |
710 | 1061 static int _vmindex_offset; |
1062 | |
1063 static void compute_offsets(); | |
1064 | |
1065 public: | |
1066 // Accessors | |
1067 static oop clazz(oop mname); | |
1068 static void set_clazz(oop mname, oop clazz); | |
1069 | |
1070 static oop type(oop mname); | |
1071 static void set_type(oop mname, oop type); | |
1072 | |
1073 static oop name(oop mname); | |
1074 static void set_name(oop mname, oop name); | |
1075 | |
1076 static int flags(oop mname); | |
1077 static void set_flags(oop mname, int flags); | |
1078 | |
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1079 static Metadata* vmtarget(oop mname); |
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1080 static void set_vmtarget(oop mname, Metadata* target); |
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1081 #if INCLUDE_JVMTI |
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1082 static void adjust_vmtarget(oop mname, Metadata* target); |
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1083 #endif // INCLUDE_JVMTI |
710 | 1084 |
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1085 static intptr_t vmindex(oop mname); |
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1086 static void set_vmindex(oop mname, intptr_t index); |
710 | 1087 |
1088 // Testers | |
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1089 static bool is_subclass(Klass* klass) { |
6983 | 1090 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1091 } |
1092 static bool is_instance(oop obj) { | |
1093 return obj != NULL && is_subclass(obj->klass()); | |
1094 } | |
1095 | |
1096 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1097 enum { | |
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1098 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1099 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1100 MN_IS_FIELD = 0x00040000, // field |
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1101 MN_IS_TYPE = 0x00080000, // nested type |
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1102 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1103 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1104 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1105 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1106 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1107 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1108 }; |
1109 | |
1110 // Accessors for code generation: | |
1111 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1112 static int type_offset_in_bytes() { return _type_offset; } | |
1113 static int name_offset_in_bytes() { return _name_offset; } | |
1114 static int flags_offset_in_bytes() { return _flags_offset; } | |
1115 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1116 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1117 }; | |
1118 | |
1119 | |
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1120 // Interface to java.lang.invoke.MethodType objects |
710 | 1121 |
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1122 class java_lang_invoke_MethodType: AllStatic { |
710 | 1123 friend class JavaClasses; |
1124 | |
1125 private: | |
1126 static int _rtype_offset; | |
1127 static int _ptypes_offset; | |
1128 | |
1129 static void compute_offsets(); | |
1130 | |
1131 public: | |
1132 // Accessors | |
1133 static oop rtype(oop mt); | |
1134 static objArrayOop ptypes(oop mt); | |
1135 | |
1136 static oop ptype(oop mt, int index); | |
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1137 static int ptype_count(oop mt); |
710 | 1138 |
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1139 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1140 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1141 |
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1142 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1143 static void print_signature(oop mt, outputStream* st); |
1144 | |
1145 static bool is_instance(oop obj) { | |
1146 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1147 } | |
1148 | |
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1149 static bool equals(oop mt1, oop mt2); |
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1150 |
710 | 1151 // Accessors for code generation: |
1152 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1153 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1154 }; | |
1155 | |
1156 | |
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1157 // Interface to java.lang.invoke.CallSite objects |
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1158 |
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1159 class java_lang_invoke_CallSite: AllStatic { |
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1160 friend class JavaClasses; |
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1161 |
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1162 private: |
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1163 static int _target_offset; |
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1164 |
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1165 static void compute_offsets(); |
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1166 |
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1167 public: |
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1168 // Accessors |
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1169 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1170 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1171 |
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1172 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1173 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1174 |
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1175 // Testers |
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1176 static bool is_subclass(Klass* klass) { |
6983 | 1177 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1178 } |
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1179 static bool is_instance(oop obj) { |
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1180 return obj != NULL && is_subclass(obj->klass()); |
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1181 } |
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1182 |
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1183 // Accessors for code generation: |
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1184 static int target_offset_in_bytes() { return _target_offset; } |
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1185 }; |
710 | 1186 |
1187 | |
0 | 1188 // Interface to java.security.AccessControlContext objects |
1189 | |
1190 class java_security_AccessControlContext: AllStatic { | |
1191 private: | |
1192 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1193 // so we compute the offsets at startup rather than hard-wiring them. | |
1194 static int _context_offset; | |
1195 static int _privilegedContext_offset; | |
1196 static int _isPrivileged_offset; | |
11010 | 1197 static int _isAuthorized_offset; |
0 | 1198 |
1199 static void compute_offsets(); | |
1200 public: | |
1201 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1202 | |
11010 | 1203 static bool is_authorized(Handle context); |
1204 | |
0 | 1205 // Debugging/initialization |
1206 friend class JavaClasses; | |
1207 }; | |
1208 | |
1209 | |
1210 // Interface to java.lang.ClassLoader objects | |
1211 | |
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1212 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1213 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1214 |
0 | 1215 class java_lang_ClassLoader : AllStatic { |
1216 private: | |
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1217 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1218 enum { |
1219 hc_parent_offset = 0 | |
1220 }; | |
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1221 static int _loader_data_offset; |
3938 | 1222 static bool offsets_computed; |
0 | 1223 static int parent_offset; |
3938 | 1224 static int parallelCapable_offset; |
1225 | |
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1226 public: |
3938 | 1227 static void compute_offsets(); |
0 | 1228 |
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1229 static ClassLoaderData** loader_data_addr(oop loader); |
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1230 static ClassLoaderData* loader_data(oop loader); |
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1231 |
0 | 1232 static oop parent(oop loader); |
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1233 static bool isAncestor(oop loader, oop cl); |
0 | 1234 |
3938 | 1235 // Support for parallelCapable field |
1236 static bool parallelCapable(oop the_class_mirror); | |
1237 | |
0 | 1238 static bool is_trusted_loader(oop loader); |
1239 | |
1240 // Fix for 4474172 | |
1241 static oop non_reflection_class_loader(oop loader); | |
1242 | |
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1243 // Testers |
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1244 static bool is_subclass(Klass* klass) { |
6983 | 1245 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1246 } |
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1247 static bool is_instance(oop obj) { |
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1248 return obj != NULL && is_subclass(obj->klass()); |
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1249 } |
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1250 |
0 | 1251 // Debugging |
1252 friend class JavaClasses; | |
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1253 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1254 }; |
1255 | |
1256 | |
1257 // Interface to java.lang.System objects | |
1258 | |
1259 class java_lang_System : AllStatic { | |
1260 private: | |
1261 enum { | |
1262 hc_static_in_offset = 0, | |
1263 hc_static_out_offset = 1, | |
11010 | 1264 hc_static_err_offset = 2, |
1265 hc_static_security_offset = 3 | |
0 | 1266 }; |
1267 | |
1268 static int static_in_offset; | |
1269 static int static_out_offset; | |
1270 static int static_err_offset; | |
11010 | 1271 static int static_security_offset; |
0 | 1272 |
1273 public: | |
1274 static int in_offset_in_bytes(); | |
1275 static int out_offset_in_bytes(); | |
1276 static int err_offset_in_bytes(); | |
1277 | |
11010 | 1278 static bool has_security_manager(); |
1279 | |
0 | 1280 // Debugging |
1281 friend class JavaClasses; | |
1282 }; | |
1283 | |
1284 | |
1285 // Interface to java.lang.StackTraceElement objects | |
1286 | |
1287 class java_lang_StackTraceElement: AllStatic { | |
1288 private: | |
1289 enum { | |
1290 hc_declaringClass_offset = 0, | |
1291 hc_methodName_offset = 1, | |
1292 hc_fileName_offset = 2, | |
1293 hc_lineNumber_offset = 3 | |
1294 }; | |
1295 | |
1296 static int declaringClass_offset; | |
1297 static int methodName_offset; | |
1298 static int fileName_offset; | |
1299 static int lineNumber_offset; | |
1300 | |
1301 public: | |
1302 // Setters | |
1303 static void set_declaringClass(oop element, oop value); | |
1304 static void set_methodName(oop element, oop value); | |
1305 static void set_fileName(oop element, oop value); | |
1306 static void set_lineNumber(oop element, int value); | |
1307 | |
1308 // Create an instance of StackTraceElement | |
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1309 static oop create(Handle mirror, int method, int version, int bci, TRAPS); |
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1310 static oop create(methodHandle method, int bci, TRAPS); |
0 | 1311 |
1312 // Debugging | |
1313 friend class JavaClasses; | |
1314 }; | |
1315 | |
1316 | |
1317 // Interface to java.lang.AssertionStatusDirectives objects | |
1318 | |
1319 class java_lang_AssertionStatusDirectives: AllStatic { | |
1320 private: | |
1321 enum { | |
1322 hc_classes_offset, | |
1323 hc_classEnabled_offset, | |
1324 hc_packages_offset, | |
1325 hc_packageEnabled_offset, | |
1326 hc_deflt_offset | |
1327 }; | |
1328 | |
1329 static int classes_offset; | |
1330 static int classEnabled_offset; | |
1331 static int packages_offset; | |
1332 static int packageEnabled_offset; | |
1333 static int deflt_offset; | |
1334 | |
1335 public: | |
1336 // Setters | |
1337 static void set_classes(oop obj, oop val); | |
1338 static void set_classEnabled(oop obj, oop val); | |
1339 static void set_packages(oop obj, oop val); | |
1340 static void set_packageEnabled(oop obj, oop val); | |
1341 static void set_deflt(oop obj, bool val); | |
1342 // Debugging | |
1343 friend class JavaClasses; | |
1344 }; | |
1345 | |
1346 | |
1347 class java_nio_Buffer: AllStatic { | |
1348 private: | |
1349 static int _limit_offset; | |
1350 | |
1351 public: | |
1352 static int limit_offset(); | |
1353 static void compute_offsets(); | |
1354 }; | |
1355 | |
1356 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1357 private: | |
1358 static int _owner_offset; | |
1359 public: | |
1360 static void initialize(TRAPS); | |
1361 static oop get_owner_threadObj(oop obj); | |
1362 }; | |
1363 | |
3938 | 1364 // Use to declare fields that need to be injected into Java classes |
1365 // for the JVM to use. The name_index and signature_index are | |
1366 // declared in vmSymbols. The may_be_java flag is used to declare | |
1367 // fields that might already exist in Java but should be injected if | |
1368 // they don't. Otherwise the field is unconditionally injected and | |
1369 // the JVM uses the injected one. This is to ensure that name | |
1370 // collisions don't occur. In general may_be_java should be false | |
1371 // unless there's a good reason. | |
1372 | |
1373 class InjectedField { | |
1374 public: | |
1375 const SystemDictionary::WKID klass_id; | |
1376 const vmSymbols::SID name_index; | |
1377 const vmSymbols::SID signature_index; | |
1378 const bool may_be_java; | |
1379 | |
1380 | |
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1381 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1382 Symbol* name() const { return lookup_symbol(name_index); } |
1383 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1384 | |
1385 int compute_offset(); | |
1386 | |
1387 // Find the Symbol for this index | |
1388 static Symbol* lookup_symbol(int symbol_index) { | |
1389 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1390 } | |
1391 }; | |
1392 | |
1393 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1394 klass##_##name##_enum, | |
1395 | |
1396 #define ALL_INJECTED_FIELDS(macro) \ | |
1397 CLASS_INJECTED_FIELDS(macro) \ | |
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1398 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1399 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1400 |
0 | 1401 // Interface to hard-coded offset checking |
1402 | |
1403 class JavaClasses : AllStatic { | |
1404 private: | |
3938 | 1405 |
1406 static InjectedField _injected_fields[]; | |
1407 | |
0 | 1408 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1409 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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1410 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1411 |
0 | 1412 public: |
3938 | 1413 enum InjectedFieldID { |
1414 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1415 MAX_enum | |
1416 }; | |
1417 | |
1418 static int compute_injected_offset(InjectedFieldID id); | |
1419 | |
0 | 1420 static void compute_hard_coded_offsets(); |
1421 static void compute_offsets(); | |
1422 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1423 |
1424 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1425 }; |
1972 | 1426 |
3938 | 1427 #undef DECLARE_INJECTED_FIELD_ENUM |
1428 | |
1972 | 1429 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |