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annotate src/share/vm/classfile/javaClasses.hpp @ 19597:dcfdd60edaf1
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author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 25 Feb 2015 19:05:03 -0800 |
parents | a4fbcdce06c8 |
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0 | 1 /* |
17764 | 2 * Copyright (c) 1997, 2014, 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_offset(oop string, int offset) { |
65 assert(initialized, "Must be initialized"); | |
66 if (offset_offset > 0) { | |
67 string->int_field_put(offset_offset, offset); | |
68 } | |
69 } | |
70 static void set_count( oop string, int count) { | |
71 assert(initialized, "Must be initialized"); | |
72 if (count_offset > 0) { | |
73 string->int_field_put(count_offset, count); | |
74 } | |
75 } | |
0 | 76 |
77 public: | |
6057 | 78 static void compute_offsets(); |
79 | |
0 | 80 // Instance creation |
81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
83 static Handle create_from_str(const char* utf8_str, TRAPS); | |
84 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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85 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
0 | 86 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
88 | |
6057 | 89 static bool has_offset_field() { |
90 assert(initialized, "Must be initialized"); | |
91 return (offset_offset > 0); | |
92 } | |
93 | |
94 static bool has_count_field() { | |
95 assert(initialized, "Must be initialized"); | |
96 return (count_offset > 0); | |
97 } | |
98 | |
99 static bool has_hash_field() { | |
100 assert(initialized, "Must be initialized"); | |
101 return (hash_offset > 0); | |
102 } | |
103 | |
104 static int value_offset_in_bytes() { | |
105 assert(initialized && (value_offset > 0), "Must be initialized"); | |
106 return value_offset; | |
107 } | |
108 static int count_offset_in_bytes() { | |
109 assert(initialized && (count_offset > 0), "Must be initialized"); | |
110 return count_offset; | |
111 } | |
112 static int offset_offset_in_bytes() { | |
113 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
114 return offset_offset; | |
115 } | |
116 static int hash_offset_in_bytes() { | |
117 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
118 return hash_offset; | |
119 } | |
0 | 120 |
17764 | 121 static void set_value(oop string, typeArrayOop buffer) { |
122 assert(initialized && (value_offset > 0), "Must be initialized"); | |
123 string->obj_field_put(value_offset, (oop)buffer); | |
124 } | |
125 static void set_hash(oop string, unsigned int hash) { | |
126 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
127 string->int_field_put(hash_offset, hash); | |
128 } | |
129 | |
0 | 130 // Accessors |
131 static typeArrayOop value(oop java_string) { | |
6057 | 132 assert(initialized && (value_offset > 0), "Must be initialized"); |
0 | 133 assert(is_instance(java_string), "must be java_string"); |
134 return (typeArrayOop) java_string->obj_field(value_offset); | |
135 } | |
17764 | 136 static unsigned int hash(oop java_string) { |
137 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
138 assert(is_instance(java_string), "must be java_string"); | |
139 return java_string->int_field(hash_offset); | |
140 } | |
0 | 141 static int offset(oop java_string) { |
6057 | 142 assert(initialized, "Must be initialized"); |
0 | 143 assert(is_instance(java_string), "must be java_string"); |
6057 | 144 if (offset_offset > 0) { |
145 return java_string->int_field(offset_offset); | |
146 } else { | |
147 return 0; | |
148 } | |
0 | 149 } |
150 static int length(oop java_string) { | |
6057 | 151 assert(initialized, "Must be initialized"); |
0 | 152 assert(is_instance(java_string), "must be java_string"); |
6057 | 153 if (count_offset > 0) { |
154 return java_string->int_field(count_offset); | |
155 } else { | |
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156 typeArrayOop value_array = ((typeArrayOop)java_string->obj_field(value_offset)); |
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157 if(value_array == NULL) { |
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158 return 0; |
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159 } else { |
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160 return value_array->length(); |
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161 } |
6057 | 162 } |
0 | 163 } |
164 static int utf8_length(oop java_string); | |
165 | |
166 // String converters | |
167 static char* as_utf8_string(oop java_string); | |
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168 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
0 | 169 static char* as_utf8_string(oop java_string, int start, int len); |
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170 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
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171 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); |
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172 // produce an ascii string with all other values quoted using \u#### |
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173 static char* as_quoted_ascii(oop java_string); |
0 | 174 |
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175 // Compute the hash value for a java.lang.String object which would |
6162 | 176 // contain the characters passed in. |
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177 // |
6162 | 178 // As the hash value used by the String object itself, in |
179 // String.hashCode(). This value is normally calculated in Java code | |
180 // in the String.hashCode method(), but is precomputed for String | |
181 // objects in the shared archive file. | |
182 // hash P(31) from Kernighan & Ritchie | |
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183 // |
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184 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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185 template <typename T> static unsigned int hash_code(T* s, int len) { |
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186 unsigned int h = 0; |
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187 while (len-- > 0) { |
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188 h = 31*h + (unsigned int) *s; |
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189 s++; |
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190 } |
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191 return h; |
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192 } |
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193 static unsigned int hash_code(oop java_string); |
6162 | 194 |
195 // This is the string hash code used by the StringTable, which may be | |
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196 // the same as String.hashCode or an alternate hash code. |
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197 static unsigned int hash_string(oop java_string); |
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198 |
0 | 199 static bool equals(oop java_string, jchar* chars, int len); |
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200 static bool equals(oop str1, oop str2); |
0 | 201 |
202 // Conversion between '.' and '/' formats | |
203 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
204 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
205 | |
206 // Conversion | |
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207 static Symbol* as_symbol(Handle java_string, TRAPS); |
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208 static Symbol* as_symbol_or_null(oop java_string); |
0 | 209 |
210 // Testers | |
211 static bool is_instance(oop obj) { | |
1142 | 212 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 213 } |
214 | |
215 // Debugging | |
216 static void print(Handle java_string, outputStream* st); | |
217 friend class JavaClasses; | |
218 }; | |
219 | |
220 | |
221 // Interface to java.lang.Class objects | |
222 | |
3938 | 223 #define CLASS_INJECTED_FIELDS(macro) \ |
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224 macro(java_lang_Class, klass, intptr_signature, false) \ |
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225 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 226 macro(java_lang_Class, oop_size, int_signature, false) \ |
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227 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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228 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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229 macro(java_lang_Class, init_lock, object_signature, false) \ |
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230 macro(java_lang_Class, signers, object_signature, false) |
3938 | 231 |
0 | 232 class java_lang_Class : AllStatic { |
3938 | 233 friend class VMStructs; |
234 | |
0 | 235 private: |
236 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
237 | |
3938 | 238 static int _klass_offset; |
239 static int _array_klass_offset; | |
0 | 240 |
3938 | 241 static int _oop_size_offset; |
242 static int _static_oop_field_count_offset; | |
0 | 243 |
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244 static int _protection_domain_offset; |
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245 static int _init_lock_offset; |
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246 static int _signers_offset; |
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247 |
0 | 248 static bool offsets_computed; |
249 static int classRedefinedCount_offset; | |
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250 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 251 |
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252 static void set_init_lock(oop java_class, oop init_lock); |
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253 static void set_protection_domain(oop java_class, oop protection_domain); |
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254 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS); |
0 | 255 public: |
3938 | 256 static void compute_offsets(); |
257 | |
0 | 258 // Instance creation |
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259 static void create_mirror(KlassHandle k, Handle protection_domain, TRAPS); |
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260 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
262 // Conversion | |
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263 static Klass* as_Klass(oop java_class); |
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264 static void set_klass(oop java_class, Klass* klass); |
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265 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 266 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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267 Klass* refk_oop = NULL; |
710 | 268 BasicType result = as_BasicType(java_class, &refk_oop); |
269 (*reference_klass) = KlassHandle(refk_oop); | |
270 return result; | |
271 } | |
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272 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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273 static void print_signature(oop java_class, outputStream *st); |
0 | 274 // Testing |
132
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275 static bool is_instance(oop obj) { |
1142 | 276 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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277 } |
0 | 278 static bool is_primitive(oop java_class); |
279 static BasicType primitive_type(oop java_class); | |
280 static oop primitive_mirror(BasicType t); | |
281 // JVM_NewArray support | |
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282 static Klass* array_klass(oop java_class); |
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283 static void set_array_klass(oop java_class, Klass* klass); |
0 | 284 // compiler support for class operations |
3938 | 285 static int klass_offset_in_bytes() { return _klass_offset; } |
286 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 287 // Support for classRedefinedCount field |
288 static int classRedefinedCount(oop the_class_mirror); | |
289 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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290 |
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291 // Support for embedded per-class oops |
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292 static oop protection_domain(oop java_class); |
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293 static oop init_lock(oop java_class); |
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294 static objArrayOop signers(oop java_class); |
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295 static void set_signers(oop java_class, objArrayOop signers); |
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296 |
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297 static int oop_size(oop java_class); |
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298 static void set_oop_size(oop java_class, int size); |
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299 static int static_oop_field_count(oop java_class); |
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300 static void set_static_oop_field_count(oop java_class, int size); |
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301 |
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302 static GrowableArray<Klass*>* fixup_mirror_list() { |
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303 return _fixup_mirror_list; |
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304 } |
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305 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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306 _fixup_mirror_list = v; |
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307 } |
0 | 308 // Debugging |
309 friend class JavaClasses; | |
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310 friend class InstanceKlass; // verification code accesses offsets |
0 | 311 friend class ClassFileParser; // access to number_of_fake_fields |
312 }; | |
313 | |
314 // Interface to java.lang.Thread objects | |
315 | |
316 class java_lang_Thread : AllStatic { | |
317 private: | |
318 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
319 // so we compute the offsets at startup rather than hard-wiring them. | |
320 static int _name_offset; | |
321 static int _group_offset; | |
322 static int _contextClassLoader_offset; | |
323 static int _inheritedAccessControlContext_offset; | |
324 static int _priority_offset; | |
325 static int _eetop_offset; | |
326 static int _daemon_offset; | |
327 static int _stillborn_offset; | |
328 static int _stackSize_offset; | |
329 static int _tid_offset; | |
330 static int _thread_status_offset; | |
331 static int _park_blocker_offset; | |
332 static int _park_event_offset ; | |
333 | |
334 static void compute_offsets(); | |
335 | |
336 public: | |
337 // Instance creation | |
338 static oop create(); | |
339 // Returns the JavaThread associated with the thread obj | |
340 static JavaThread* thread(oop java_thread); | |
341 // Set JavaThread for instance | |
342 static void set_thread(oop java_thread, JavaThread* thread); | |
343 // Name | |
344 static typeArrayOop name(oop java_thread); | |
345 static void set_name(oop java_thread, typeArrayOop name); | |
346 // Priority | |
347 static ThreadPriority priority(oop java_thread); | |
348 static void set_priority(oop java_thread, ThreadPriority priority); | |
349 // Thread group | |
350 static oop threadGroup(oop java_thread); | |
351 // Stillborn | |
352 static bool is_stillborn(oop java_thread); | |
353 static void set_stillborn(oop java_thread); | |
354 // Alive (NOTE: this is not really a field, but provides the correct | |
355 // definition without doing a Java call) | |
356 static bool is_alive(oop java_thread); | |
357 // Daemon | |
358 static bool is_daemon(oop java_thread); | |
359 static void set_daemon(oop java_thread); | |
360 // Context ClassLoader | |
361 static oop context_class_loader(oop java_thread); | |
362 // Control context | |
363 static oop inherited_access_control_context(oop java_thread); | |
364 // Stack size hint | |
365 static jlong stackSize(oop java_thread); | |
366 // Thread ID | |
367 static jlong thread_id(oop java_thread); | |
368 | |
369 // Blocker object responsible for thread parking | |
370 static oop park_blocker(oop java_thread); | |
371 | |
372 // Pointer to type-stable park handler, encoded as jlong. | |
373 // Should be set when apparently null | |
374 // For details, see unsafe.cpp Unsafe_Unpark | |
375 static jlong park_event(oop java_thread); | |
376 static bool set_park_event(oop java_thread, jlong ptr); | |
377 | |
378 // Java Thread Status for JVMTI and M&M use. | |
379 // This thread status info is saved in threadStatus field of | |
380 // java.lang.Thread java class. | |
381 enum ThreadStatus { | |
382 NEW = 0, | |
383 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
384 JVMTI_THREAD_STATE_RUNNABLE, | |
385 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
386 JVMTI_THREAD_STATE_WAITING + | |
387 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
388 JVMTI_THREAD_STATE_SLEEPING, | |
389 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
390 JVMTI_THREAD_STATE_WAITING + | |
391 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
392 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
393 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
394 JVMTI_THREAD_STATE_WAITING + | |
395 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
396 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
397 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
398 JVMTI_THREAD_STATE_WAITING + | |
399 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
400 JVMTI_THREAD_STATE_PARKED, | |
401 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
402 JVMTI_THREAD_STATE_WAITING + | |
403 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
404 JVMTI_THREAD_STATE_PARKED, | |
405 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
406 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
407 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
408 }; | |
409 // Write thread status info to threadStatus field of java.lang.Thread. | |
410 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
411 // Read thread status info from threadStatus field of java.lang.Thread. | |
412 static ThreadStatus get_thread_status(oop java_thread_oop); | |
413 | |
414 static const char* thread_status_name(oop java_thread_oop); | |
415 | |
416 // Debugging | |
417 friend class JavaClasses; | |
418 }; | |
419 | |
420 // Interface to java.lang.ThreadGroup objects | |
421 | |
422 class java_lang_ThreadGroup : AllStatic { | |
423 private: | |
424 static int _parent_offset; | |
425 static int _name_offset; | |
426 static int _threads_offset; | |
427 static int _groups_offset; | |
428 static int _maxPriority_offset; | |
429 static int _destroyed_offset; | |
430 static int _daemon_offset; | |
431 static int _vmAllowSuspension_offset; | |
432 static int _nthreads_offset; | |
433 static int _ngroups_offset; | |
434 | |
435 static void compute_offsets(); | |
436 | |
437 public: | |
438 // parent ThreadGroup | |
439 static oop parent(oop java_thread_group); | |
440 // name | |
441 static typeArrayOop name(oop java_thread_group); | |
442 // ("name as oop" accessor is not necessary) | |
443 // Number of threads in group | |
444 static int nthreads(oop java_thread_group); | |
445 // threads | |
446 static objArrayOop threads(oop java_thread_group); | |
447 // Number of threads in group | |
448 static int ngroups(oop java_thread_group); | |
449 // groups | |
450 static objArrayOop groups(oop java_thread_group); | |
451 // maxPriority in group | |
452 static ThreadPriority maxPriority(oop java_thread_group); | |
453 // Destroyed | |
454 static bool is_destroyed(oop java_thread_group); | |
455 // Daemon | |
456 static bool is_daemon(oop java_thread_group); | |
457 // vmAllowSuspension | |
458 static bool is_vmAllowSuspension(oop java_thread_group); | |
459 // Debugging | |
460 friend class JavaClasses; | |
461 }; | |
462 | |
463 | |
464 | |
465 // Interface to java.lang.Throwable objects | |
466 | |
467 class java_lang_Throwable: AllStatic { | |
468 friend class BacktraceBuilder; | |
469 | |
470 private: | |
471 // Offsets | |
472 enum { | |
473 hc_backtrace_offset = 0, | |
474 hc_detailMessage_offset = 1, | |
475 hc_cause_offset = 2, // New since 1.4 | |
476 hc_stackTrace_offset = 3 // New since 1.4 | |
477 }; | |
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478 enum { |
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479 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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480 }; |
0 | 481 // Trace constants |
482 enum { | |
483 trace_methods_offset = 0, | |
484 trace_bcis_offset = 1, | |
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485 trace_mirrors_offset = 2, |
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486 trace_next_offset = 3, |
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487 trace_size = 4, |
0 | 488 trace_chunk_size = 32 |
489 }; | |
490 | |
491 static int backtrace_offset; | |
492 static int detailMessage_offset; | |
493 static int cause_offset; | |
494 static int stackTrace_offset; | |
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495 static int static_unassigned_stacktrace_offset; |
0 | 496 |
497 // Printing | |
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498 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); |
0 | 499 // StackTrace (programmatic access, new since 1.4) |
500 static void clear_stacktrace(oop throwable); | |
501 // No stack trace available | |
502 static const char* no_stack_trace_message(); | |
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503 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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504 static void set_stacktrace(oop throwable, oop st_element_array); |
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505 static oop unassigned_stacktrace(); |
0 | 506 |
507 public: | |
508 // Backtrace | |
509 static oop backtrace(oop throwable); | |
510 static void set_backtrace(oop throwable, oop value); | |
511 // Needed by JVMTI to filter out this internal field. | |
512 static int get_backtrace_offset() { return backtrace_offset;} | |
513 static int get_detailMessage_offset() { return detailMessage_offset;} | |
514 // Message | |
515 static oop message(oop throwable); | |
516 static oop message(Handle throwable); | |
517 static void set_message(oop throwable, oop value); | |
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518 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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519 int version, int bci); |
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520 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
0 | 521 static void print_stack_usage(Handle stream); |
522 | |
523 // Allocate space for backtrace (created but stack trace not filled in) | |
524 static void allocate_backtrace(Handle throwable, TRAPS); | |
525 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
526 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
527 // Fill in current stack trace, can cause GC | |
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528 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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529 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 530 // Programmatic access to stack trace |
531 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
532 static int get_stack_trace_depth(oop throwable, TRAPS); | |
533 // Printing | |
534 static void print(oop throwable, outputStream* st); | |
535 static void print(Handle throwable, outputStream* st); | |
536 static void print_stack_trace(oop throwable, outputStream* st); | |
537 // Debugging | |
538 friend class JavaClasses; | |
539 }; | |
540 | |
541 | |
542 // Interface to java.lang.reflect.AccessibleObject objects | |
543 | |
544 class java_lang_reflect_AccessibleObject: AllStatic { | |
545 private: | |
546 // Note that to reduce dependencies on the JDK we compute these | |
547 // offsets at run-time. | |
548 static int override_offset; | |
549 | |
550 static void compute_offsets(); | |
551 | |
552 public: | |
553 // Accessors | |
554 static jboolean override(oop reflect); | |
555 static void set_override(oop reflect, jboolean value); | |
556 | |
557 // Debugging | |
558 friend class JavaClasses; | |
559 }; | |
560 | |
561 | |
562 // Interface to java.lang.reflect.Method objects | |
563 | |
564 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
565 private: | |
566 // Note that to reduce dependencies on the JDK we compute these | |
567 // offsets at run-time. | |
568 static int clazz_offset; | |
569 static int name_offset; | |
570 static int returnType_offset; | |
571 static int parameterTypes_offset; | |
572 static int exceptionTypes_offset; | |
573 static int slot_offset; | |
574 static int modifiers_offset; | |
575 static int signature_offset; | |
576 static int annotations_offset; | |
577 static int parameter_annotations_offset; | |
578 static int annotation_default_offset; | |
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579 static int type_annotations_offset; |
0 | 580 |
581 static void compute_offsets(); | |
582 | |
583 public: | |
584 // Allocation | |
585 static Handle create(TRAPS); | |
586 | |
587 // Accessors | |
588 static oop clazz(oop reflect); | |
589 static void set_clazz(oop reflect, oop value); | |
590 | |
591 static oop name(oop method); | |
592 static void set_name(oop method, oop value); | |
593 | |
594 static oop return_type(oop method); | |
595 static void set_return_type(oop method, oop value); | |
596 | |
597 static oop parameter_types(oop method); | |
598 static void set_parameter_types(oop method, oop value); | |
599 | |
600 static oop exception_types(oop method); | |
601 static void set_exception_types(oop method, oop value); | |
602 | |
603 static int slot(oop reflect); | |
604 static void set_slot(oop reflect, int value); | |
605 | |
606 static int modifiers(oop method); | |
607 static void set_modifiers(oop method, int value); | |
608 | |
609 static bool has_signature_field(); | |
610 static oop signature(oop method); | |
611 static void set_signature(oop method, oop value); | |
612 | |
613 static bool has_annotations_field(); | |
614 static oop annotations(oop method); | |
615 static void set_annotations(oop method, oop value); | |
616 | |
617 static bool has_parameter_annotations_field(); | |
618 static oop parameter_annotations(oop method); | |
619 static void set_parameter_annotations(oop method, oop value); | |
620 | |
621 static bool has_annotation_default_field(); | |
622 static oop annotation_default(oop method); | |
623 static void set_annotation_default(oop method, oop value); | |
624 | |
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625 static bool has_type_annotations_field(); |
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626 static oop type_annotations(oop method); |
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627 static void set_type_annotations(oop method, oop value); |
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628 |
0 | 629 // Debugging |
630 friend class JavaClasses; | |
631 }; | |
632 | |
633 | |
634 // Interface to java.lang.reflect.Constructor objects | |
635 | |
636 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
637 private: | |
638 // Note that to reduce dependencies on the JDK we compute these | |
639 // offsets at run-time. | |
640 static int clazz_offset; | |
641 static int parameterTypes_offset; | |
642 static int exceptionTypes_offset; | |
643 static int slot_offset; | |
644 static int modifiers_offset; | |
645 static int signature_offset; | |
646 static int annotations_offset; | |
647 static int parameter_annotations_offset; | |
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648 static int type_annotations_offset; |
0 | 649 |
650 static void compute_offsets(); | |
651 | |
652 public: | |
653 // Allocation | |
654 static Handle create(TRAPS); | |
655 | |
656 // Accessors | |
657 static oop clazz(oop reflect); | |
658 static void set_clazz(oop reflect, oop value); | |
659 | |
660 static oop parameter_types(oop constructor); | |
661 static void set_parameter_types(oop constructor, oop value); | |
662 | |
663 static oop exception_types(oop constructor); | |
664 static void set_exception_types(oop constructor, oop value); | |
665 | |
666 static int slot(oop reflect); | |
667 static void set_slot(oop reflect, int value); | |
668 | |
669 static int modifiers(oop constructor); | |
670 static void set_modifiers(oop constructor, int value); | |
671 | |
672 static bool has_signature_field(); | |
673 static oop signature(oop constructor); | |
674 static void set_signature(oop constructor, oop value); | |
675 | |
676 static bool has_annotations_field(); | |
677 static oop annotations(oop constructor); | |
678 static void set_annotations(oop constructor, oop value); | |
679 | |
680 static bool has_parameter_annotations_field(); | |
681 static oop parameter_annotations(oop method); | |
682 static void set_parameter_annotations(oop method, oop value); | |
683 | |
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684 static bool has_type_annotations_field(); |
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685 static oop type_annotations(oop constructor); |
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686 static void set_type_annotations(oop constructor, oop value); |
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687 |
0 | 688 // Debugging |
689 friend class JavaClasses; | |
690 }; | |
691 | |
692 | |
693 // Interface to java.lang.reflect.Field objects | |
694 | |
695 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
696 private: | |
697 // Note that to reduce dependencies on the JDK we compute these | |
698 // offsets at run-time. | |
699 static int clazz_offset; | |
700 static int name_offset; | |
701 static int type_offset; | |
702 static int slot_offset; | |
703 static int modifiers_offset; | |
704 static int signature_offset; | |
705 static int annotations_offset; | |
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706 static int type_annotations_offset; |
0 | 707 |
708 static void compute_offsets(); | |
709 | |
710 public: | |
711 // Allocation | |
712 static Handle create(TRAPS); | |
713 | |
714 // Accessors | |
715 static oop clazz(oop reflect); | |
716 static void set_clazz(oop reflect, oop value); | |
717 | |
718 static oop name(oop field); | |
719 static void set_name(oop field, oop value); | |
720 | |
721 static oop type(oop field); | |
722 static void set_type(oop field, oop value); | |
723 | |
724 static int slot(oop reflect); | |
725 static void set_slot(oop reflect, int value); | |
726 | |
727 static int modifiers(oop field); | |
728 static void set_modifiers(oop field, int value); | |
729 | |
730 static bool has_signature_field(); | |
731 static oop signature(oop constructor); | |
732 static void set_signature(oop constructor, oop value); | |
733 | |
734 static bool has_annotations_field(); | |
735 static oop annotations(oop constructor); | |
736 static void set_annotations(oop constructor, oop value); | |
737 | |
738 static bool has_parameter_annotations_field(); | |
739 static oop parameter_annotations(oop method); | |
740 static void set_parameter_annotations(oop method, oop value); | |
741 | |
742 static bool has_annotation_default_field(); | |
743 static oop annotation_default(oop method); | |
744 static void set_annotation_default(oop method, oop value); | |
745 | |
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746 static bool has_type_annotations_field(); |
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747 static oop type_annotations(oop field); |
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748 static void set_type_annotations(oop field, oop value); |
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749 |
0 | 750 // Debugging |
751 friend class JavaClasses; | |
752 }; | |
753 | |
7462
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754 class java_lang_reflect_Parameter { |
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755 private: |
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756 // Note that to reduce dependencies on the JDK we compute these |
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757 // offsets at run-time. |
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758 static int name_offset; |
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759 static int modifiers_offset; |
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760 static int index_offset; |
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761 static int executable_offset; |
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762 |
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763 static void compute_offsets(); |
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764 |
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765 public: |
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766 // Allocation |
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767 static Handle create(TRAPS); |
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768 |
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769 // Accessors |
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770 static oop name(oop field); |
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771 static void set_name(oop field, oop value); |
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772 |
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773 static int index(oop reflect); |
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774 static void set_index(oop reflect, int value); |
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775 |
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776 static int modifiers(oop reflect); |
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777 static void set_modifiers(oop reflect, int value); |
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778 |
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779 static oop executable(oop constructor); |
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780 static void set_executable(oop constructor, oop value); |
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781 |
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782 friend class JavaClasses; |
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783 }; |
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784 |
0 | 785 // Interface to sun.reflect.ConstantPool objects |
786 class sun_reflect_ConstantPool { | |
787 private: | |
788 // Note that to reduce dependencies on the JDK we compute these | |
789 // offsets at run-time. | |
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790 static int _oop_offset; |
0 | 791 |
792 static void compute_offsets(); | |
793 | |
794 public: | |
795 // Allocation | |
796 static Handle create(TRAPS); | |
797 | |
798 // Accessors | |
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799 static void set_cp(oop reflect, ConstantPool* value); |
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800 static int oop_offset() { |
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801 return _oop_offset; |
0 | 802 } |
803 | |
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804 static ConstantPool* get_cp(oop reflect); |
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805 |
0 | 806 // Debugging |
807 friend class JavaClasses; | |
808 }; | |
809 | |
810 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
811 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
812 private: | |
813 static int _base_offset; | |
814 static void compute_offsets(); | |
815 | |
816 public: | |
817 static int base_offset() { | |
818 return _base_offset; | |
819 } | |
820 | |
821 // Debugging | |
822 friend class JavaClasses; | |
823 }; | |
824 | |
825 // Interface to java.lang primitive type boxing objects: | |
826 // - java.lang.Boolean | |
827 // - java.lang.Character | |
828 // - java.lang.Float | |
829 // - java.lang.Double | |
830 // - java.lang.Byte | |
831 // - java.lang.Short | |
832 // - java.lang.Integer | |
833 // - java.lang.Long | |
834 | |
835 // This could be separated out into 8 individual classes. | |
836 | |
837 class java_lang_boxing_object: AllStatic { | |
838 private: | |
839 enum { | |
840 hc_value_offset = 0 | |
841 }; | |
842 static int value_offset; | |
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843 static int long_value_offset; |
0 | 844 |
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845 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 846 public: |
847 // Allocation. Returns a boxed value, or NULL for invalid type. | |
848 static oop create(BasicType type, jvalue* value, TRAPS); | |
849 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
850 static BasicType get_value(oop box, jvalue* value); | |
851 static BasicType set_value(oop box, jvalue* value); | |
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852 static BasicType basic_type(oop box); |
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853 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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854 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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855 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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856 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 857 |
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858 static int value_offset_in_bytes(BasicType type) { |
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859 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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860 value_offset; |
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861 } |
0 | 862 |
863 // Debugging | |
864 friend class JavaClasses; | |
865 }; | |
866 | |
867 | |
868 | |
869 // Interface to java.lang.ref.Reference objects | |
870 | |
871 class java_lang_ref_Reference: AllStatic { | |
872 public: | |
873 enum { | |
874 hc_referent_offset = 0, | |
875 hc_queue_offset = 1, | |
876 hc_next_offset = 2, | |
877 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
878 }; | |
879 enum { | |
880 hc_static_lock_offset = 0, | |
881 hc_static_pending_offset = 1 | |
882 }; | |
883 | |
884 static int referent_offset; | |
885 static int queue_offset; | |
886 static int next_offset; | |
887 static int discovered_offset; | |
888 static int static_lock_offset; | |
889 static int static_pending_offset; | |
890 static int number_of_fake_oop_fields; | |
891 | |
892 // Accessors | |
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893 static oop referent(oop ref) { |
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894 return ref->obj_field(referent_offset); |
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895 } |
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896 static void set_referent(oop ref, oop value) { |
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897 ref->obj_field_put(referent_offset, value); |
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898 } |
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899 static void set_referent_raw(oop ref, oop value) { |
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900 ref->obj_field_put_raw(referent_offset, value); |
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901 } |
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902 static HeapWord* referent_addr(oop ref) { |
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903 return ref->obj_field_addr<HeapWord>(referent_offset); |
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904 } |
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905 static oop next(oop ref) { |
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906 return ref->obj_field(next_offset); |
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907 } |
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908 static void set_next(oop ref, oop value) { |
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909 ref->obj_field_put(next_offset, value); |
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910 } |
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911 static void set_next_raw(oop ref, oop value) { |
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912 ref->obj_field_put_raw(next_offset, value); |
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913 } |
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914 static HeapWord* next_addr(oop ref) { |
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915 return ref->obj_field_addr<HeapWord>(next_offset); |
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916 } |
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917 static oop discovered(oop ref) { |
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918 return ref->obj_field(discovered_offset); |
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919 } |
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920 static void set_discovered(oop ref, oop value) { |
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921 ref->obj_field_put(discovered_offset, value); |
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922 } |
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923 static void set_discovered_raw(oop ref, oop value) { |
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924 ref->obj_field_put_raw(discovered_offset, value); |
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925 } |
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926 static HeapWord* discovered_addr(oop ref) { |
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927 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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928 } |
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929 // Accessors for statics |
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930 static oop pending_list_lock(); |
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931 static oop pending_list(); |
0 | 932 |
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933 static HeapWord* pending_list_lock_addr(); |
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934 static HeapWord* pending_list_addr(); |
0 | 935 }; |
936 | |
937 | |
938 // Interface to java.lang.ref.SoftReference objects | |
939 | |
940 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
941 public: | |
942 enum { | |
943 // The timestamp is a long field and may need to be adjusted for alignment. | |
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944 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 945 }; |
946 enum { | |
947 hc_static_clock_offset = 0 | |
948 }; | |
949 | |
950 static int timestamp_offset; | |
951 static int static_clock_offset; | |
952 | |
953 // Accessors | |
954 static jlong timestamp(oop ref); | |
955 | |
956 // Accessors for statics | |
957 static jlong clock(); | |
958 static void set_clock(jlong value); | |
959 }; | |
960 | |
961 | |
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962 // Interface to java.lang.invoke.MethodHandle objects |
710 | 963 |
964 class MethodHandleEntry; | |
965 | |
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966 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 967 friend class JavaClasses; |
968 | |
969 private: | |
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970 static int _type_offset; // the MethodType of this MH |
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971 static int _form_offset; // the LambdaForm of this MH |
710 | 972 |
973 static void compute_offsets(); | |
974 | |
975 public: | |
976 // Accessors | |
977 static oop type(oop mh); | |
978 static void set_type(oop mh, oop mtype); | |
979 | |
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980 static oop form(oop mh); |
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981 static void set_form(oop mh, oop lform); |
710 | 982 |
983 // Testers | |
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984 static bool is_subclass(Klass* klass) { |
6983 | 985 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 986 } |
987 static bool is_instance(oop obj) { | |
988 return obj != NULL && is_subclass(obj->klass()); | |
989 } | |
990 | |
991 // Accessors for code generation: | |
992 static int type_offset_in_bytes() { return _type_offset; } | |
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993 static int form_offset_in_bytes() { return _form_offset; } |
710 | 994 }; |
995 | |
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996 // Interface to java.lang.invoke.DirectMethodHandle objects |
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997 |
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998 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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999 friend class JavaClasses; |
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1000 |
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1001 private: |
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1002 static int _member_offset; // the MemberName of this DMH |
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1003 |
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1004 static void compute_offsets(); |
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1005 |
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1006 public: |
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1007 // Accessors |
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1008 static oop member(oop mh); |
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1009 |
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1010 // Testers |
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1011 static bool is_subclass(Klass* klass) { |
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1012 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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1013 } |
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1014 static bool is_instance(oop obj) { |
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1015 return obj != NULL && is_subclass(obj->klass()); |
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1016 } |
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1017 |
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1018 // Accessors for code generation: |
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1019 static int member_offset_in_bytes() { return _member_offset; } |
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1020 }; |
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1021 |
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1022 // Interface to java.lang.invoke.LambdaForm objects |
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1023 // (These are a private interface for managing adapter code generation.) |
3938 | 1024 |
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1025 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 1026 friend class JavaClasses; |
1027 | |
1028 private: | |
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1029 static int _vmentry_offset; // type is MemberName |
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1030 |
710 | 1031 static void compute_offsets(); |
1032 | |
1033 public: | |
1034 // Accessors | |
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1035 static oop vmentry(oop lform); |
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1036 static void set_vmentry(oop lform, oop invoker); |
710 | 1037 |
1038 // Testers | |
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1039 static bool is_subclass(Klass* klass) { |
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1040 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 1041 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 1042 } |
1043 static bool is_instance(oop obj) { | |
1044 return obj != NULL && is_subclass(obj->klass()); | |
1045 } | |
1046 | |
1047 // Accessors for code generation: | |
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1048 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 1049 }; |
1050 | |
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1051 |
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1052 // Interface to java.lang.invoke.MemberName objects |
710 | 1053 // (These are a private interface for Java code to query the class hierarchy.) |
1054 | |
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1055 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1056 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1057 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1058 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 1059 |
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1060 class java_lang_invoke_MemberName: AllStatic { |
710 | 1061 friend class JavaClasses; |
1062 | |
1063 private: | |
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1064 // From java.lang.invoke.MemberName: |
710 | 1065 // private Class<?> clazz; // class in which the method is defined |
1066 // private String name; // may be null if not yet materialized | |
1067 // private Object type; // may be null if not yet materialized | |
1068 // private int flags; // modifier bits; see reflect.Modifier | |
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1069 // private intptr vmtarget; // VM-specific target value |
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1070 // private intptr_t vmindex; // member index within class or interface |
710 | 1071 static int _clazz_offset; |
1072 static int _name_offset; | |
1073 static int _type_offset; | |
1074 static int _flags_offset; | |
1075 static int _vmtarget_offset; | |
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1076 static int _vmloader_offset; |
710 | 1077 static int _vmindex_offset; |
1078 | |
1079 static void compute_offsets(); | |
1080 | |
1081 public: | |
1082 // Accessors | |
1083 static oop clazz(oop mname); | |
1084 static void set_clazz(oop mname, oop clazz); | |
1085 | |
1086 static oop type(oop mname); | |
1087 static void set_type(oop mname, oop type); | |
1088 | |
1089 static oop name(oop mname); | |
1090 static void set_name(oop mname, oop name); | |
1091 | |
1092 static int flags(oop mname); | |
1093 static void set_flags(oop mname, int flags); | |
1094 | |
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1095 static Metadata* vmtarget(oop mname); |
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1096 static void set_vmtarget(oop mname, Metadata* target); |
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1097 #if INCLUDE_JVMTI |
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1098 static void adjust_vmtarget(oop mname, Metadata* target); |
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1099 #endif // INCLUDE_JVMTI |
710 | 1100 |
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1101 static intptr_t vmindex(oop mname); |
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1102 static void set_vmindex(oop mname, intptr_t index); |
710 | 1103 |
1104 // Testers | |
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1105 static bool is_subclass(Klass* klass) { |
6983 | 1106 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1107 } |
1108 static bool is_instance(oop obj) { | |
1109 return obj != NULL && is_subclass(obj->klass()); | |
1110 } | |
1111 | |
1112 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1113 enum { | |
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1114 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1115 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1116 MN_IS_FIELD = 0x00040000, // field |
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1117 MN_IS_TYPE = 0x00080000, // nested type |
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1118 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1119 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1120 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1121 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1122 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1123 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1124 }; |
1125 | |
1126 // Accessors for code generation: | |
1127 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1128 static int type_offset_in_bytes() { return _type_offset; } | |
1129 static int name_offset_in_bytes() { return _name_offset; } | |
1130 static int flags_offset_in_bytes() { return _flags_offset; } | |
1131 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1132 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1133 }; | |
1134 | |
1135 | |
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1136 // Interface to java.lang.invoke.MethodType objects |
710 | 1137 |
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1138 class java_lang_invoke_MethodType: AllStatic { |
710 | 1139 friend class JavaClasses; |
1140 | |
1141 private: | |
1142 static int _rtype_offset; | |
1143 static int _ptypes_offset; | |
1144 | |
1145 static void compute_offsets(); | |
1146 | |
1147 public: | |
1148 // Accessors | |
1149 static oop rtype(oop mt); | |
1150 static objArrayOop ptypes(oop mt); | |
1151 | |
1152 static oop ptype(oop mt, int index); | |
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1153 static int ptype_count(oop mt); |
710 | 1154 |
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1155 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1156 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1157 |
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1158 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1159 static void print_signature(oop mt, outputStream* st); |
1160 | |
1161 static bool is_instance(oop obj) { | |
1162 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1163 } | |
1164 | |
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1165 static bool equals(oop mt1, oop mt2); |
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1166 |
710 | 1167 // Accessors for code generation: |
1168 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1169 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1170 }; | |
1171 | |
1172 | |
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1173 // Interface to java.lang.invoke.CallSite objects |
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1174 |
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1175 class java_lang_invoke_CallSite: AllStatic { |
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1176 friend class JavaClasses; |
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1177 |
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1178 private: |
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1179 static int _target_offset; |
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1180 |
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1181 static void compute_offsets(); |
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1182 |
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1183 public: |
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1184 // Accessors |
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1185 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1186 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1187 |
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1188 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1189 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1190 |
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1191 // Testers |
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1192 static bool is_subclass(Klass* klass) { |
6983 | 1193 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1194 } |
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1195 static bool is_instance(oop obj) { |
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1196 return obj != NULL && is_subclass(obj->klass()); |
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1197 } |
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1198 |
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1199 // Accessors for code generation: |
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1200 static int target_offset_in_bytes() { return _target_offset; } |
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1201 }; |
710 | 1202 |
1203 | |
0 | 1204 // Interface to java.security.AccessControlContext objects |
1205 | |
1206 class java_security_AccessControlContext: AllStatic { | |
1207 private: | |
1208 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1209 // so we compute the offsets at startup rather than hard-wiring them. | |
1210 static int _context_offset; | |
1211 static int _privilegedContext_offset; | |
1212 static int _isPrivileged_offset; | |
11010 | 1213 static int _isAuthorized_offset; |
0 | 1214 |
1215 static void compute_offsets(); | |
1216 public: | |
1217 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1218 | |
11010 | 1219 static bool is_authorized(Handle context); |
1220 | |
0 | 1221 // Debugging/initialization |
1222 friend class JavaClasses; | |
1223 }; | |
1224 | |
1225 | |
1226 // Interface to java.lang.ClassLoader objects | |
1227 | |
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1228 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1229 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1230 |
0 | 1231 class java_lang_ClassLoader : AllStatic { |
1232 private: | |
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1233 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1234 enum { |
1235 hc_parent_offset = 0 | |
1236 }; | |
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1237 static int _loader_data_offset; |
3938 | 1238 static bool offsets_computed; |
0 | 1239 static int parent_offset; |
3938 | 1240 static int parallelCapable_offset; |
1241 | |
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1242 public: |
3938 | 1243 static void compute_offsets(); |
0 | 1244 |
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1245 static ClassLoaderData** loader_data_addr(oop loader); |
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1246 static ClassLoaderData* loader_data(oop loader); |
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1247 |
0 | 1248 static oop parent(oop loader); |
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1249 static bool isAncestor(oop loader, oop cl); |
0 | 1250 |
3938 | 1251 // Support for parallelCapable field |
1252 static bool parallelCapable(oop the_class_mirror); | |
1253 | |
0 | 1254 static bool is_trusted_loader(oop loader); |
1255 | |
1256 // Fix for 4474172 | |
1257 static oop non_reflection_class_loader(oop loader); | |
1258 | |
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1259 // Testers |
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1260 static bool is_subclass(Klass* klass) { |
6983 | 1261 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1262 } |
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1263 static bool is_instance(oop obj) { |
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1264 return obj != NULL && is_subclass(obj->klass()); |
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1265 } |
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1266 |
0 | 1267 // Debugging |
1268 friend class JavaClasses; | |
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1269 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1270 }; |
1271 | |
1272 | |
1273 // Interface to java.lang.System objects | |
1274 | |
1275 class java_lang_System : AllStatic { | |
1276 private: | |
1277 enum { | |
1278 hc_static_in_offset = 0, | |
1279 hc_static_out_offset = 1, | |
11010 | 1280 hc_static_err_offset = 2, |
1281 hc_static_security_offset = 3 | |
0 | 1282 }; |
1283 | |
1284 static int static_in_offset; | |
1285 static int static_out_offset; | |
1286 static int static_err_offset; | |
11010 | 1287 static int static_security_offset; |
0 | 1288 |
1289 public: | |
1290 static int in_offset_in_bytes(); | |
1291 static int out_offset_in_bytes(); | |
1292 static int err_offset_in_bytes(); | |
1293 | |
11010 | 1294 static bool has_security_manager(); |
1295 | |
0 | 1296 // Debugging |
1297 friend class JavaClasses; | |
1298 }; | |
1299 | |
1300 | |
1301 // Interface to java.lang.StackTraceElement objects | |
1302 | |
1303 class java_lang_StackTraceElement: AllStatic { | |
1304 private: | |
1305 enum { | |
1306 hc_declaringClass_offset = 0, | |
1307 hc_methodName_offset = 1, | |
1308 hc_fileName_offset = 2, | |
1309 hc_lineNumber_offset = 3 | |
1310 }; | |
1311 | |
1312 static int declaringClass_offset; | |
1313 static int methodName_offset; | |
1314 static int fileName_offset; | |
1315 static int lineNumber_offset; | |
1316 | |
1317 public: | |
1318 // Setters | |
1319 static void set_declaringClass(oop element, oop value); | |
1320 static void set_methodName(oop element, oop value); | |
1321 static void set_fileName(oop element, oop value); | |
1322 static void set_lineNumber(oop element, int value); | |
1323 | |
1324 // Create an instance of StackTraceElement | |
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1325 static oop create(Handle mirror, int method, int version, int bci, TRAPS); |
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1326 static oop create(methodHandle method, int bci, TRAPS); |
0 | 1327 |
1328 // Debugging | |
1329 friend class JavaClasses; | |
1330 }; | |
1331 | |
1332 | |
1333 // Interface to java.lang.AssertionStatusDirectives objects | |
1334 | |
1335 class java_lang_AssertionStatusDirectives: AllStatic { | |
1336 private: | |
1337 enum { | |
1338 hc_classes_offset, | |
1339 hc_classEnabled_offset, | |
1340 hc_packages_offset, | |
1341 hc_packageEnabled_offset, | |
1342 hc_deflt_offset | |
1343 }; | |
1344 | |
1345 static int classes_offset; | |
1346 static int classEnabled_offset; | |
1347 static int packages_offset; | |
1348 static int packageEnabled_offset; | |
1349 static int deflt_offset; | |
1350 | |
1351 public: | |
1352 // Setters | |
1353 static void set_classes(oop obj, oop val); | |
1354 static void set_classEnabled(oop obj, oop val); | |
1355 static void set_packages(oop obj, oop val); | |
1356 static void set_packageEnabled(oop obj, oop val); | |
1357 static void set_deflt(oop obj, bool val); | |
1358 // Debugging | |
1359 friend class JavaClasses; | |
1360 }; | |
1361 | |
1362 | |
1363 class java_nio_Buffer: AllStatic { | |
1364 private: | |
1365 static int _limit_offset; | |
1366 | |
1367 public: | |
1368 static int limit_offset(); | |
1369 static void compute_offsets(); | |
1370 }; | |
1371 | |
1372 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1373 private: | |
1374 static int _owner_offset; | |
1375 public: | |
1376 static void initialize(TRAPS); | |
1377 static oop get_owner_threadObj(oop obj); | |
1378 }; | |
1379 | |
3938 | 1380 // Use to declare fields that need to be injected into Java classes |
1381 // for the JVM to use. The name_index and signature_index are | |
1382 // declared in vmSymbols. The may_be_java flag is used to declare | |
1383 // fields that might already exist in Java but should be injected if | |
1384 // they don't. Otherwise the field is unconditionally injected and | |
1385 // the JVM uses the injected one. This is to ensure that name | |
1386 // collisions don't occur. In general may_be_java should be false | |
1387 // unless there's a good reason. | |
1388 | |
1389 class InjectedField { | |
1390 public: | |
1391 const SystemDictionary::WKID klass_id; | |
1392 const vmSymbols::SID name_index; | |
1393 const vmSymbols::SID signature_index; | |
1394 const bool may_be_java; | |
1395 | |
1396 | |
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1397 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1398 Symbol* name() const { return lookup_symbol(name_index); } |
1399 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1400 | |
1401 int compute_offset(); | |
1402 | |
1403 // Find the Symbol for this index | |
1404 static Symbol* lookup_symbol(int symbol_index) { | |
1405 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1406 } | |
1407 }; | |
1408 | |
1409 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1410 klass##_##name##_enum, | |
1411 | |
1412 #define ALL_INJECTED_FIELDS(macro) \ | |
1413 CLASS_INJECTED_FIELDS(macro) \ | |
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1414 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1415 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1416 |
0 | 1417 // Interface to hard-coded offset checking |
1418 | |
1419 class JavaClasses : AllStatic { | |
1420 private: | |
3938 | 1421 |
1422 static InjectedField _injected_fields[]; | |
1423 | |
0 | 1424 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1425 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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1426 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1427 |
0 | 1428 public: |
3938 | 1429 enum InjectedFieldID { |
1430 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1431 MAX_enum | |
1432 }; | |
1433 | |
1434 static int compute_injected_offset(InjectedFieldID id); | |
1435 | |
0 | 1436 static void compute_hard_coded_offsets(); |
1437 static void compute_offsets(); | |
1438 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1439 |
1440 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1441 }; |
1972 | 1442 |
3938 | 1443 #undef DECLARE_INJECTED_FIELD_ENUM |
1444 | |
1972 | 1445 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |