Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/javaClasses.hpp @ 3962:cb315dc80374
7092278: "jmap -finalizerinfo" throws "sun.jvm.hotspot.utilities.AssertionFailure: invalid cp index 0 137"
Reviewed-by: kvn
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date | Thu, 29 Sep 2011 09:53:56 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP |
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP | |
27 | |
28 #include "classfile/systemDictionary.hpp" | |
29 #include "jvmtifiles/jvmti.h" | |
30 #include "oops/oop.hpp" | |
31 #include "runtime/os.hpp" | |
32 #include "utilities/utf8.hpp" | |
33 | |
0 | 34 // Interface for manipulating the basic Java classes. |
35 // | |
36 // All dependencies on layout of actual Java classes should be kept here. | |
37 // If the layout of any of the classes above changes the offsets must be adjusted. | |
38 // | |
39 // For most classes we hardwire the offsets for performance reasons. In certain | |
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
41 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
42 // | |
43 // Note that fields (static and non-static) are arranged with oops before non-oops | |
44 // on a per class basis. The offsets below have to reflect this ordering. | |
45 // | |
46 // When editing the layouts please update the check_offset verification code | |
47 // correspondingly. The names in the enums must be identical to the actual field | |
48 // names in order for the verification code to work. | |
49 | |
50 | |
51 // Interface to java.lang.String objects | |
52 | |
53 class java_lang_String : AllStatic { | |
54 private: | |
55 enum { | |
56 hc_value_offset = 0, | |
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57 hc_offset_offset = 1 |
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58 //hc_count_offset = 2 -- not a word-scaled offset |
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59 //hc_hash_offset = 3 -- not a word-scaled offset |
0 | 60 }; |
61 | |
62 static int value_offset; | |
63 static int offset_offset; | |
64 static int count_offset; | |
65 static int hash_offset; | |
66 | |
67 static Handle basic_create(int length, bool tenured, TRAPS); | |
68 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); | |
69 | |
70 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); } | |
71 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); } | |
72 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); } | |
73 | |
74 public: | |
75 // Instance creation | |
76 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
77 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); | |
78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
79 static Handle create_from_str(const char* utf8_str, TRAPS); | |
80 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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81 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
0 | 82 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
84 | |
85 static int value_offset_in_bytes() { return value_offset; } | |
86 static int count_offset_in_bytes() { return count_offset; } | |
87 static int offset_offset_in_bytes() { return offset_offset; } | |
88 static int hash_offset_in_bytes() { return hash_offset; } | |
89 | |
90 // Accessors | |
91 static typeArrayOop value(oop java_string) { | |
92 assert(is_instance(java_string), "must be java_string"); | |
93 return (typeArrayOop) java_string->obj_field(value_offset); | |
94 } | |
95 static int offset(oop java_string) { | |
96 assert(is_instance(java_string), "must be java_string"); | |
97 return java_string->int_field(offset_offset); | |
98 } | |
99 static int length(oop java_string) { | |
100 assert(is_instance(java_string), "must be java_string"); | |
101 return java_string->int_field(count_offset); | |
102 } | |
103 static int utf8_length(oop java_string); | |
104 | |
105 // String converters | |
106 static char* as_utf8_string(oop java_string); | |
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107 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
0 | 108 static char* as_utf8_string(oop java_string, int start, int len); |
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109 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
0 | 110 static jchar* as_unicode_string(oop java_string, int& length); |
111 | |
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112 // Compute the hash value for a java.lang.String object which would |
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113 // contain the characters passed in. This hash value is used for at |
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114 // least two purposes. |
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115 // |
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116 // (a) As the hash value used by the StringTable for bucket selection |
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117 // and comparison (stored in the HashtableEntry structures). This |
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118 // is used in the String.intern() method. |
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119 // |
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120 // (b) As the hash value used by the String object itself, in |
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121 // String.hashCode(). This value is normally calculate in Java code |
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122 // in the String.hashCode method(), but is precomputed for String |
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123 // objects in the shared archive file. |
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124 // |
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125 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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126 static unsigned int hash_string(jchar* s, int len) { |
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127 unsigned int h = 0; |
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128 while (len-- > 0) { |
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129 h = 31*h + (unsigned int) *s; |
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130 s++; |
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131 } |
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132 return h; |
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133 } |
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134 static unsigned int hash_string(oop java_string); |
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135 |
0 | 136 static bool equals(oop java_string, jchar* chars, int len); |
137 | |
138 // Conversion between '.' and '/' formats | |
139 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
140 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
141 | |
142 // Conversion | |
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143 static Symbol* as_symbol(Handle java_string, TRAPS); |
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144 static Symbol* as_symbol_or_null(oop java_string); |
0 | 145 |
146 // Testers | |
147 static bool is_instance(oop obj) { | |
1142 | 148 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 149 } |
150 | |
151 // Debugging | |
152 static void print(Handle java_string, outputStream* st); | |
153 friend class JavaClasses; | |
154 }; | |
155 | |
156 | |
157 // Interface to java.lang.Class objects | |
158 | |
3938 | 159 #define CLASS_INJECTED_FIELDS(macro) \ |
160 macro(java_lang_Class, klass, object_signature, false) \ | |
161 macro(java_lang_Class, resolved_constructor, object_signature, false) \ | |
162 macro(java_lang_Class, array_klass, object_signature, false) \ | |
163 macro(java_lang_Class, oop_size, int_signature, false) \ | |
164 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
165 | |
0 | 166 class java_lang_Class : AllStatic { |
3938 | 167 friend class VMStructs; |
168 | |
0 | 169 private: |
170 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
171 | |
3938 | 172 static int _klass_offset; |
173 static int _resolved_constructor_offset; | |
174 static int _array_klass_offset; | |
0 | 175 |
3938 | 176 static int _oop_size_offset; |
177 static int _static_oop_field_count_offset; | |
0 | 178 |
179 static bool offsets_computed; | |
180 static int classRedefinedCount_offset; | |
181 | |
182 public: | |
3938 | 183 static void compute_offsets(); |
184 | |
0 | 185 // Instance creation |
186 static oop create_mirror(KlassHandle k, TRAPS); | |
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187 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 188 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
189 // Conversion | |
190 static klassOop as_klassOop(oop java_class); | |
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191 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
710 | 192 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
193 klassOop refk_oop = NULL; | |
194 BasicType result = as_BasicType(java_class, &refk_oop); | |
195 (*reference_klass) = KlassHandle(refk_oop); | |
196 return result; | |
197 } | |
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198 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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199 static void print_signature(oop java_class, outputStream *st); |
0 | 200 // Testing |
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201 static bool is_instance(oop obj) { |
1142 | 202 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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203 } |
0 | 204 static bool is_primitive(oop java_class); |
205 static BasicType primitive_type(oop java_class); | |
206 static oop primitive_mirror(BasicType t); | |
207 // JVM_NewInstance support | |
208 static methodOop resolved_constructor(oop java_class); | |
209 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
210 // JVM_NewArray support | |
211 static klassOop array_klass(oop java_class); | |
212 static void set_array_klass(oop java_class, klassOop klass); | |
213 // compiler support for class operations | |
3938 | 214 static int klass_offset_in_bytes() { return _klass_offset; } |
215 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
216 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 217 // Support for classRedefinedCount field |
218 static int classRedefinedCount(oop the_class_mirror); | |
219 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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220 |
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221 static int oop_size(oop java_class); |
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222 static void set_oop_size(oop java_class, int size); |
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223 static int static_oop_field_count(oop java_class); |
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224 static void set_static_oop_field_count(oop java_class, int size); |
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225 |
0 | 226 // Debugging |
227 friend class JavaClasses; | |
228 friend class instanceKlass; // verification code accesses offsets | |
229 friend class ClassFileParser; // access to number_of_fake_fields | |
230 }; | |
231 | |
232 // Interface to java.lang.Thread objects | |
233 | |
234 class java_lang_Thread : AllStatic { | |
235 private: | |
236 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
237 // so we compute the offsets at startup rather than hard-wiring them. | |
238 static int _name_offset; | |
239 static int _group_offset; | |
240 static int _contextClassLoader_offset; | |
241 static int _inheritedAccessControlContext_offset; | |
242 static int _priority_offset; | |
243 static int _eetop_offset; | |
244 static int _daemon_offset; | |
245 static int _stillborn_offset; | |
246 static int _stackSize_offset; | |
247 static int _tid_offset; | |
248 static int _thread_status_offset; | |
249 static int _park_blocker_offset; | |
250 static int _park_event_offset ; | |
251 | |
252 static void compute_offsets(); | |
253 | |
254 public: | |
255 // Instance creation | |
256 static oop create(); | |
257 // Returns the JavaThread associated with the thread obj | |
258 static JavaThread* thread(oop java_thread); | |
259 // Set JavaThread for instance | |
260 static void set_thread(oop java_thread, JavaThread* thread); | |
261 // Name | |
262 static typeArrayOop name(oop java_thread); | |
263 static void set_name(oop java_thread, typeArrayOop name); | |
264 // Priority | |
265 static ThreadPriority priority(oop java_thread); | |
266 static void set_priority(oop java_thread, ThreadPriority priority); | |
267 // Thread group | |
268 static oop threadGroup(oop java_thread); | |
269 // Stillborn | |
270 static bool is_stillborn(oop java_thread); | |
271 static void set_stillborn(oop java_thread); | |
272 // Alive (NOTE: this is not really a field, but provides the correct | |
273 // definition without doing a Java call) | |
274 static bool is_alive(oop java_thread); | |
275 // Daemon | |
276 static bool is_daemon(oop java_thread); | |
277 static void set_daemon(oop java_thread); | |
278 // Context ClassLoader | |
279 static oop context_class_loader(oop java_thread); | |
280 // Control context | |
281 static oop inherited_access_control_context(oop java_thread); | |
282 // Stack size hint | |
283 static jlong stackSize(oop java_thread); | |
284 // Thread ID | |
285 static jlong thread_id(oop java_thread); | |
286 | |
287 // Blocker object responsible for thread parking | |
288 static oop park_blocker(oop java_thread); | |
289 | |
290 // Pointer to type-stable park handler, encoded as jlong. | |
291 // Should be set when apparently null | |
292 // For details, see unsafe.cpp Unsafe_Unpark | |
293 static jlong park_event(oop java_thread); | |
294 static bool set_park_event(oop java_thread, jlong ptr); | |
295 | |
296 // Java Thread Status for JVMTI and M&M use. | |
297 // This thread status info is saved in threadStatus field of | |
298 // java.lang.Thread java class. | |
299 enum ThreadStatus { | |
300 NEW = 0, | |
301 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
302 JVMTI_THREAD_STATE_RUNNABLE, | |
303 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
304 JVMTI_THREAD_STATE_WAITING + | |
305 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
306 JVMTI_THREAD_STATE_SLEEPING, | |
307 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
308 JVMTI_THREAD_STATE_WAITING + | |
309 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
310 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
311 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
312 JVMTI_THREAD_STATE_WAITING + | |
313 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
314 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
315 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
316 JVMTI_THREAD_STATE_WAITING + | |
317 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
318 JVMTI_THREAD_STATE_PARKED, | |
319 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
320 JVMTI_THREAD_STATE_WAITING + | |
321 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
322 JVMTI_THREAD_STATE_PARKED, | |
323 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
324 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
325 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
326 }; | |
327 // Write thread status info to threadStatus field of java.lang.Thread. | |
328 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
329 // Read thread status info from threadStatus field of java.lang.Thread. | |
330 static ThreadStatus get_thread_status(oop java_thread_oop); | |
331 | |
332 static const char* thread_status_name(oop java_thread_oop); | |
333 | |
334 // Debugging | |
335 friend class JavaClasses; | |
336 }; | |
337 | |
338 // Interface to java.lang.ThreadGroup objects | |
339 | |
340 class java_lang_ThreadGroup : AllStatic { | |
341 private: | |
342 static int _parent_offset; | |
343 static int _name_offset; | |
344 static int _threads_offset; | |
345 static int _groups_offset; | |
346 static int _maxPriority_offset; | |
347 static int _destroyed_offset; | |
348 static int _daemon_offset; | |
349 static int _vmAllowSuspension_offset; | |
350 static int _nthreads_offset; | |
351 static int _ngroups_offset; | |
352 | |
353 static void compute_offsets(); | |
354 | |
355 public: | |
356 // parent ThreadGroup | |
357 static oop parent(oop java_thread_group); | |
358 // name | |
359 static typeArrayOop name(oop java_thread_group); | |
360 // ("name as oop" accessor is not necessary) | |
361 // Number of threads in group | |
362 static int nthreads(oop java_thread_group); | |
363 // threads | |
364 static objArrayOop threads(oop java_thread_group); | |
365 // Number of threads in group | |
366 static int ngroups(oop java_thread_group); | |
367 // groups | |
368 static objArrayOop groups(oop java_thread_group); | |
369 // maxPriority in group | |
370 static ThreadPriority maxPriority(oop java_thread_group); | |
371 // Destroyed | |
372 static bool is_destroyed(oop java_thread_group); | |
373 // Daemon | |
374 static bool is_daemon(oop java_thread_group); | |
375 // vmAllowSuspension | |
376 static bool is_vmAllowSuspension(oop java_thread_group); | |
377 // Debugging | |
378 friend class JavaClasses; | |
379 }; | |
380 | |
381 | |
382 | |
383 // Interface to java.lang.Throwable objects | |
384 | |
385 class java_lang_Throwable: AllStatic { | |
386 friend class BacktraceBuilder; | |
387 | |
388 private: | |
389 // Offsets | |
390 enum { | |
391 hc_backtrace_offset = 0, | |
392 hc_detailMessage_offset = 1, | |
393 hc_cause_offset = 2, // New since 1.4 | |
394 hc_stackTrace_offset = 3 // New since 1.4 | |
395 }; | |
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396 enum { |
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397 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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398 }; |
0 | 399 // Trace constants |
400 enum { | |
401 trace_methods_offset = 0, | |
402 trace_bcis_offset = 1, | |
403 trace_next_offset = 2, | |
404 trace_size = 3, | |
405 trace_chunk_size = 32 | |
406 }; | |
407 | |
408 static int backtrace_offset; | |
409 static int detailMessage_offset; | |
410 static int cause_offset; | |
411 static int stackTrace_offset; | |
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412 static int static_unassigned_stacktrace_offset; |
0 | 413 |
414 // Printing | |
415 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
416 static void print_to_stream(Handle stream, const char* str); | |
417 // StackTrace (programmatic access, new since 1.4) | |
418 static void clear_stacktrace(oop throwable); | |
419 // No stack trace available | |
420 static const char* no_stack_trace_message(); | |
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421 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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422 static void set_stacktrace(oop throwable, oop st_element_array); |
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423 static oop unassigned_stacktrace(); |
0 | 424 |
425 public: | |
426 // Backtrace | |
427 static oop backtrace(oop throwable); | |
428 static void set_backtrace(oop throwable, oop value); | |
429 // Needed by JVMTI to filter out this internal field. | |
430 static int get_backtrace_offset() { return backtrace_offset;} | |
431 static int get_detailMessage_offset() { return detailMessage_offset;} | |
432 // Message | |
433 static oop message(oop throwable); | |
434 static oop message(Handle throwable); | |
435 static void set_message(oop throwable, oop value); | |
436 // Print stack trace stored in exception by call-back to Java | |
437 // Note: this is no longer used in Merlin, but we still suppport | |
438 // it for compatibility. | |
439 static void print_stack_trace(oop throwable, oop print_stream); | |
440 static void print_stack_element(Handle stream, methodOop method, int bci); | |
441 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
442 static void print_stack_usage(Handle stream); | |
443 | |
444 // Allocate space for backtrace (created but stack trace not filled in) | |
445 static void allocate_backtrace(Handle throwable, TRAPS); | |
446 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
447 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
448 // Fill in current stack trace, can cause GC | |
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449 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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450 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 451 // Programmatic access to stack trace |
452 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
453 static int get_stack_trace_depth(oop throwable, TRAPS); | |
454 // Printing | |
455 static void print(oop throwable, outputStream* st); | |
456 static void print(Handle throwable, outputStream* st); | |
457 static void print_stack_trace(oop throwable, outputStream* st); | |
458 // Debugging | |
459 friend class JavaClasses; | |
460 }; | |
461 | |
462 | |
463 // Interface to java.lang.reflect.AccessibleObject objects | |
464 | |
465 class java_lang_reflect_AccessibleObject: AllStatic { | |
466 private: | |
467 // Note that to reduce dependencies on the JDK we compute these | |
468 // offsets at run-time. | |
469 static int override_offset; | |
470 | |
471 static void compute_offsets(); | |
472 | |
473 public: | |
474 // Accessors | |
475 static jboolean override(oop reflect); | |
476 static void set_override(oop reflect, jboolean value); | |
477 | |
478 // Debugging | |
479 friend class JavaClasses; | |
480 }; | |
481 | |
482 | |
483 // Interface to java.lang.reflect.Method objects | |
484 | |
485 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
486 private: | |
487 // Note that to reduce dependencies on the JDK we compute these | |
488 // offsets at run-time. | |
489 static int clazz_offset; | |
490 static int name_offset; | |
491 static int returnType_offset; | |
492 static int parameterTypes_offset; | |
493 static int exceptionTypes_offset; | |
494 static int slot_offset; | |
495 static int modifiers_offset; | |
496 static int signature_offset; | |
497 static int annotations_offset; | |
498 static int parameter_annotations_offset; | |
499 static int annotation_default_offset; | |
500 | |
501 static void compute_offsets(); | |
502 | |
503 public: | |
504 // Allocation | |
505 static Handle create(TRAPS); | |
506 | |
507 // Accessors | |
508 static oop clazz(oop reflect); | |
509 static void set_clazz(oop reflect, oop value); | |
510 | |
511 static oop name(oop method); | |
512 static void set_name(oop method, oop value); | |
513 | |
514 static oop return_type(oop method); | |
515 static void set_return_type(oop method, oop value); | |
516 | |
517 static oop parameter_types(oop method); | |
518 static void set_parameter_types(oop method, oop value); | |
519 | |
520 static oop exception_types(oop method); | |
521 static void set_exception_types(oop method, oop value); | |
522 | |
523 static int slot(oop reflect); | |
524 static void set_slot(oop reflect, int value); | |
525 | |
526 static int modifiers(oop method); | |
527 static void set_modifiers(oop method, int value); | |
528 | |
529 static bool has_signature_field(); | |
530 static oop signature(oop method); | |
531 static void set_signature(oop method, oop value); | |
532 | |
533 static bool has_annotations_field(); | |
534 static oop annotations(oop method); | |
535 static void set_annotations(oop method, oop value); | |
536 | |
537 static bool has_parameter_annotations_field(); | |
538 static oop parameter_annotations(oop method); | |
539 static void set_parameter_annotations(oop method, oop value); | |
540 | |
541 static bool has_annotation_default_field(); | |
542 static oop annotation_default(oop method); | |
543 static void set_annotation_default(oop method, oop value); | |
544 | |
545 // Debugging | |
546 friend class JavaClasses; | |
547 }; | |
548 | |
549 | |
550 // Interface to java.lang.reflect.Constructor objects | |
551 | |
552 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
553 private: | |
554 // Note that to reduce dependencies on the JDK we compute these | |
555 // offsets at run-time. | |
556 static int clazz_offset; | |
557 static int parameterTypes_offset; | |
558 static int exceptionTypes_offset; | |
559 static int slot_offset; | |
560 static int modifiers_offset; | |
561 static int signature_offset; | |
562 static int annotations_offset; | |
563 static int parameter_annotations_offset; | |
564 | |
565 static void compute_offsets(); | |
566 | |
567 public: | |
568 // Allocation | |
569 static Handle create(TRAPS); | |
570 | |
571 // Accessors | |
572 static oop clazz(oop reflect); | |
573 static void set_clazz(oop reflect, oop value); | |
574 | |
575 static oop parameter_types(oop constructor); | |
576 static void set_parameter_types(oop constructor, oop value); | |
577 | |
578 static oop exception_types(oop constructor); | |
579 static void set_exception_types(oop constructor, oop value); | |
580 | |
581 static int slot(oop reflect); | |
582 static void set_slot(oop reflect, int value); | |
583 | |
584 static int modifiers(oop constructor); | |
585 static void set_modifiers(oop constructor, int value); | |
586 | |
587 static bool has_signature_field(); | |
588 static oop signature(oop constructor); | |
589 static void set_signature(oop constructor, oop value); | |
590 | |
591 static bool has_annotations_field(); | |
592 static oop annotations(oop constructor); | |
593 static void set_annotations(oop constructor, oop value); | |
594 | |
595 static bool has_parameter_annotations_field(); | |
596 static oop parameter_annotations(oop method); | |
597 static void set_parameter_annotations(oop method, oop value); | |
598 | |
599 // Debugging | |
600 friend class JavaClasses; | |
601 }; | |
602 | |
603 | |
604 // Interface to java.lang.reflect.Field objects | |
605 | |
606 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
607 private: | |
608 // Note that to reduce dependencies on the JDK we compute these | |
609 // offsets at run-time. | |
610 static int clazz_offset; | |
611 static int name_offset; | |
612 static int type_offset; | |
613 static int slot_offset; | |
614 static int modifiers_offset; | |
615 static int signature_offset; | |
616 static int annotations_offset; | |
617 | |
618 static void compute_offsets(); | |
619 | |
620 public: | |
621 // Allocation | |
622 static Handle create(TRAPS); | |
623 | |
624 // Accessors | |
625 static oop clazz(oop reflect); | |
626 static void set_clazz(oop reflect, oop value); | |
627 | |
628 static oop name(oop field); | |
629 static void set_name(oop field, oop value); | |
630 | |
631 static oop type(oop field); | |
632 static void set_type(oop field, oop value); | |
633 | |
634 static int slot(oop reflect); | |
635 static void set_slot(oop reflect, int value); | |
636 | |
637 static int modifiers(oop field); | |
638 static void set_modifiers(oop field, int value); | |
639 | |
640 static bool has_signature_field(); | |
641 static oop signature(oop constructor); | |
642 static void set_signature(oop constructor, oop value); | |
643 | |
644 static bool has_annotations_field(); | |
645 static oop annotations(oop constructor); | |
646 static void set_annotations(oop constructor, oop value); | |
647 | |
648 static bool has_parameter_annotations_field(); | |
649 static oop parameter_annotations(oop method); | |
650 static void set_parameter_annotations(oop method, oop value); | |
651 | |
652 static bool has_annotation_default_field(); | |
653 static oop annotation_default(oop method); | |
654 static void set_annotation_default(oop method, oop value); | |
655 | |
656 // Debugging | |
657 friend class JavaClasses; | |
658 }; | |
659 | |
660 // Interface to sun.reflect.ConstantPool objects | |
661 class sun_reflect_ConstantPool { | |
662 private: | |
663 // Note that to reduce dependencies on the JDK we compute these | |
664 // offsets at run-time. | |
665 static int _cp_oop_offset; | |
666 | |
667 static void compute_offsets(); | |
668 | |
669 public: | |
670 // Allocation | |
671 static Handle create(TRAPS); | |
672 | |
673 // Accessors | |
674 static oop cp_oop(oop reflect); | |
675 static void set_cp_oop(oop reflect, oop value); | |
676 static int cp_oop_offset() { | |
677 return _cp_oop_offset; | |
678 } | |
679 | |
680 // Debugging | |
681 friend class JavaClasses; | |
682 }; | |
683 | |
684 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
685 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
686 private: | |
687 static int _base_offset; | |
688 static void compute_offsets(); | |
689 | |
690 public: | |
691 static int base_offset() { | |
692 return _base_offset; | |
693 } | |
694 | |
695 // Debugging | |
696 friend class JavaClasses; | |
697 }; | |
698 | |
699 // Interface to java.lang primitive type boxing objects: | |
700 // - java.lang.Boolean | |
701 // - java.lang.Character | |
702 // - java.lang.Float | |
703 // - java.lang.Double | |
704 // - java.lang.Byte | |
705 // - java.lang.Short | |
706 // - java.lang.Integer | |
707 // - java.lang.Long | |
708 | |
709 // This could be separated out into 8 individual classes. | |
710 | |
711 class java_lang_boxing_object: AllStatic { | |
712 private: | |
713 enum { | |
714 hc_value_offset = 0 | |
715 }; | |
716 static int value_offset; | |
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717 static int long_value_offset; |
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719 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 720 public: |
721 // Allocation. Returns a boxed value, or NULL for invalid type. | |
722 static oop create(BasicType type, jvalue* value, TRAPS); | |
723 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
724 static BasicType get_value(oop box, jvalue* value); | |
725 static BasicType set_value(oop box, jvalue* value); | |
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726 static BasicType basic_type(oop box); |
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727 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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728 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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729 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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730 static void print(BasicType type, jvalue* value, outputStream* st); |
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732 static int value_offset_in_bytes(BasicType type) { |
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733 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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734 value_offset; |
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735 } |
0 | 736 |
737 // Debugging | |
738 friend class JavaClasses; | |
739 }; | |
740 | |
741 | |
742 | |
743 // Interface to java.lang.ref.Reference objects | |
744 | |
745 class java_lang_ref_Reference: AllStatic { | |
746 public: | |
747 enum { | |
748 hc_referent_offset = 0, | |
749 hc_queue_offset = 1, | |
750 hc_next_offset = 2, | |
751 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
752 }; | |
753 enum { | |
754 hc_static_lock_offset = 0, | |
755 hc_static_pending_offset = 1 | |
756 }; | |
757 | |
758 static int referent_offset; | |
759 static int queue_offset; | |
760 static int next_offset; | |
761 static int discovered_offset; | |
762 static int static_lock_offset; | |
763 static int static_pending_offset; | |
764 static int number_of_fake_oop_fields; | |
765 | |
766 // Accessors | |
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767 static oop referent(oop ref) { |
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768 return ref->obj_field(referent_offset); |
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769 } |
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770 static void set_referent(oop ref, oop value) { |
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771 ref->obj_field_put(referent_offset, value); |
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772 } |
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773 static void set_referent_raw(oop ref, oop value) { |
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774 ref->obj_field_put_raw(referent_offset, value); |
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775 } |
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776 static HeapWord* referent_addr(oop ref) { |
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777 return ref->obj_field_addr<HeapWord>(referent_offset); |
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778 } |
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779 static oop next(oop ref) { |
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780 return ref->obj_field(next_offset); |
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781 } |
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782 static void set_next(oop ref, oop value) { |
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783 ref->obj_field_put(next_offset, value); |
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784 } |
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785 static void set_next_raw(oop ref, oop value) { |
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786 ref->obj_field_put_raw(next_offset, value); |
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787 } |
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788 static HeapWord* next_addr(oop ref) { |
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789 return ref->obj_field_addr<HeapWord>(next_offset); |
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790 } |
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791 static oop discovered(oop ref) { |
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792 return ref->obj_field(discovered_offset); |
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793 } |
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794 static void set_discovered(oop ref, oop value) { |
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795 ref->obj_field_put(discovered_offset, value); |
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796 } |
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797 static void set_discovered_raw(oop ref, oop value) { |
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798 ref->obj_field_put_raw(discovered_offset, value); |
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799 } |
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800 static HeapWord* discovered_addr(oop ref) { |
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801 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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802 } |
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803 // Accessors for statics |
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804 static oop pending_list_lock(); |
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805 static oop pending_list(); |
0 | 806 |
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807 static HeapWord* pending_list_addr(); |
0 | 808 }; |
809 | |
810 | |
811 // Interface to java.lang.ref.SoftReference objects | |
812 | |
813 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
814 public: | |
815 enum { | |
816 // The timestamp is a long field and may need to be adjusted for alignment. | |
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817 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 818 }; |
819 enum { | |
820 hc_static_clock_offset = 0 | |
821 }; | |
822 | |
823 static int timestamp_offset; | |
824 static int static_clock_offset; | |
825 | |
826 // Accessors | |
827 static jlong timestamp(oop ref); | |
828 | |
829 // Accessors for statics | |
830 static jlong clock(); | |
831 static void set_clock(jlong value); | |
832 }; | |
833 | |
834 | |
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835 // Interface to java.lang.invoke.MethodHandle objects |
710 | 836 |
3938 | 837 #define METHODHANDLE_INJECTED_FIELDS(macro) \ |
838 macro(java_lang_invoke_MethodHandle, vmentry, intptr_signature, false) \ | |
839 macro(java_lang_invoke_MethodHandle, vmtarget, object_signature, true) | |
840 | |
710 | 841 class MethodHandleEntry; |
842 | |
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843 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 844 friend class JavaClasses; |
845 | |
846 private: | |
3938 | 847 static int _vmentry_offset; // assembly code trampoline for MH |
848 static int _vmtarget_offset; // class-specific target reference | |
710 | 849 static int _type_offset; // the MethodType of this MH |
850 | |
851 static void compute_offsets(); | |
852 | |
853 public: | |
854 // Accessors | |
855 static oop type(oop mh); | |
856 static void set_type(oop mh, oop mtype); | |
857 | |
858 static oop vmtarget(oop mh); | |
859 static void set_vmtarget(oop mh, oop target); | |
860 | |
861 static MethodHandleEntry* vmentry(oop mh); | |
862 static void set_vmentry(oop mh, MethodHandleEntry* data); | |
863 | |
864 static int vmslots(oop mh); | |
865 | |
866 // Testers | |
867 static bool is_subclass(klassOop klass) { | |
868 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
869 } | |
870 static bool is_instance(oop obj) { | |
871 return obj != NULL && is_subclass(obj->klass()); | |
872 } | |
873 | |
874 // Accessors for code generation: | |
875 static int type_offset_in_bytes() { return _type_offset; } | |
876 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
877 static int vmentry_offset_in_bytes() { return _vmentry_offset; } | |
878 }; | |
879 | |
3938 | 880 #define DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \ |
881 macro(java_lang_invoke_DirectMethodHandle, vmindex, int_signature, true) | |
882 | |
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883 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle { |
710 | 884 friend class JavaClasses; |
885 | |
886 private: | |
887 static int _vmindex_offset; // negative or vtable idx or itable idx | |
888 static void compute_offsets(); | |
889 | |
890 public: | |
891 // Accessors | |
892 static int vmindex(oop mh); | |
893 static void set_vmindex(oop mh, int index); | |
894 | |
895 // Testers | |
896 static bool is_subclass(klassOop klass) { | |
897 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); | |
898 } | |
899 static bool is_instance(oop obj) { | |
900 return obj != NULL && is_subclass(obj->klass()); | |
901 } | |
902 | |
903 // Accessors for code generation: | |
904 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
905 }; | |
906 | |
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907 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle { |
710 | 908 friend class JavaClasses; |
909 | |
910 private: | |
911 static int _argument_offset; // argument value bound into this MH | |
912 static int _vmargslot_offset; // relevant argument slot (<= vmslots) | |
913 static void compute_offsets(); | |
914 | |
915 public: | |
916 static oop argument(oop mh); | |
917 static void set_argument(oop mh, oop ref); | |
918 | |
919 static jint vmargslot(oop mh); | |
920 static void set_vmargslot(oop mh, jint slot); | |
921 | |
922 // Testers | |
923 static bool is_subclass(klassOop klass) { | |
924 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass()); | |
925 } | |
926 static bool is_instance(oop obj) { | |
927 return obj != NULL && is_subclass(obj->klass()); | |
928 } | |
929 | |
930 static int argument_offset_in_bytes() { return _argument_offset; } | |
931 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; } | |
932 }; | |
933 | |
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934 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle { |
710 | 935 friend class JavaClasses; |
936 | |
937 private: | |
938 static int _conversion_offset; // type of conversion to apply | |
939 static void compute_offsets(); | |
940 | |
941 public: | |
942 static int conversion(oop mh); | |
943 static void set_conversion(oop mh, int conv); | |
944 | |
945 // Testers | |
946 static bool is_subclass(klassOop klass) { | |
947 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass()); | |
948 } | |
949 static bool is_instance(oop obj) { | |
950 return obj != NULL && is_subclass(obj->klass()); | |
951 } | |
952 | |
953 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
954 enum { | |
955 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype | |
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956 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T) |
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957 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument |
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958 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another |
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959 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive |
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960 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper |
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961 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg) |
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962 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg) |
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963 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS) |
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964 OP_DROP_ARGS = 0x9, // remove one or more argument slots |
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965 OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function |
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966 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size) |
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967 OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result |
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968 //OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists |
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969 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration |
710 | 970 |
971 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field | |
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972 CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below |
710 | 973 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use |
974 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK | |
975 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK | |
976 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed) | |
977 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed) | |
978 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change | |
979 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1 | |
980 }; | |
981 | |
982 static int conversion_offset_in_bytes() { return _conversion_offset; } | |
983 }; | |
984 | |
985 | |
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986 // A simple class that maintains an invocation count |
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987 class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle { |
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988 friend class JavaClasses; |
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989 |
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990 private: |
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991 static int _vmcount_offset; |
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992 static void compute_offsets(); |
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993 |
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994 public: |
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995 // Accessors |
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996 static int vmcount(oop mh); |
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997 static void set_vmcount(oop mh, int count); |
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998 |
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999 // Testers |
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1000 static bool is_subclass(klassOop klass) { |
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1001 return SystemDictionary::CountingMethodHandle_klass() != NULL && |
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1002 Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass()); |
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1003 } |
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1004 static bool is_instance(oop obj) { |
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1005 return obj != NULL && is_subclass(obj->klass()); |
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1006 } |
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1007 |
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1008 // Accessors for code generation: |
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1009 static int vmcount_offset_in_bytes() { return _vmcount_offset; } |
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1010 }; |
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1011 |
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1012 |
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1013 |
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1014 // Interface to java.lang.invoke.MemberName objects |
710 | 1015 // (These are a private interface for Java code to query the class hierarchy.) |
1016 | |
3938 | 1017 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
1018 macro(java_lang_invoke_MemberName, vmtarget, object_signature, true) | |
1019 | |
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1020 class java_lang_invoke_MemberName: AllStatic { |
710 | 1021 friend class JavaClasses; |
1022 | |
1023 private: | |
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1024 // From java.lang.invoke.MemberName: |
710 | 1025 // private Class<?> clazz; // class in which the method is defined |
1026 // private String name; // may be null if not yet materialized | |
1027 // private Object type; // may be null if not yet materialized | |
1028 // private int flags; // modifier bits; see reflect.Modifier | |
1029 // private Object vmtarget; // VM-specific target value | |
1030 // private int vmindex; // method index within class or interface | |
1031 static int _clazz_offset; | |
1032 static int _name_offset; | |
1033 static int _type_offset; | |
1034 static int _flags_offset; | |
1035 static int _vmtarget_offset; | |
1036 static int _vmindex_offset; | |
1037 | |
1038 static void compute_offsets(); | |
1039 | |
1040 public: | |
1041 // Accessors | |
1042 static oop clazz(oop mname); | |
1043 static void set_clazz(oop mname, oop clazz); | |
1044 | |
1045 static oop type(oop mname); | |
1046 static void set_type(oop mname, oop type); | |
1047 | |
1048 static oop name(oop mname); | |
1049 static void set_name(oop mname, oop name); | |
1050 | |
1051 static int flags(oop mname); | |
1052 static void set_flags(oop mname, int flags); | |
1053 | |
1054 static int modifiers(oop mname) { return (u2) flags(mname); } | |
1055 static void set_modifiers(oop mname, int mods) | |
1056 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); } | |
1057 | |
1058 static oop vmtarget(oop mname); | |
1059 static void set_vmtarget(oop mname, oop target); | |
1060 | |
1061 static int vmindex(oop mname); | |
1062 static void set_vmindex(oop mname, int index); | |
1063 | |
1064 // Testers | |
1065 static bool is_subclass(klassOop klass) { | |
1066 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
1067 } | |
1068 static bool is_instance(oop obj) { | |
1069 return obj != NULL && is_subclass(obj->klass()); | |
1070 } | |
1071 | |
1072 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1073 enum { | |
1074 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
1075 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
1076 MN_IS_FIELD = 0x00040000, // field | |
1077 MN_IS_TYPE = 0x00080000, // nested type | |
1078 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers | |
1079 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers | |
1080 VM_INDEX_UNINITIALIZED = -99 | |
1081 }; | |
1082 | |
1083 // Accessors for code generation: | |
1084 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1085 static int type_offset_in_bytes() { return _type_offset; } | |
1086 static int name_offset_in_bytes() { return _name_offset; } | |
1087 static int flags_offset_in_bytes() { return _flags_offset; } | |
1088 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1089 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1090 }; | |
1091 | |
1092 | |
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1093 // Interface to java.lang.invoke.MethodType objects |
710 | 1094 |
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1095 class java_lang_invoke_MethodType: AllStatic { |
710 | 1096 friend class JavaClasses; |
1097 | |
1098 private: | |
1099 static int _rtype_offset; | |
1100 static int _ptypes_offset; | |
1101 static int _form_offset; | |
1102 | |
1103 static void compute_offsets(); | |
1104 | |
1105 public: | |
1106 // Accessors | |
1107 static oop rtype(oop mt); | |
1108 static objArrayOop ptypes(oop mt); | |
1109 static oop form(oop mt); | |
1110 | |
1111 static oop ptype(oop mt, int index); | |
1133
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1112 static int ptype_count(oop mt); |
710 | 1113 |
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1114 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1115 static void print_signature(oop mt, outputStream* st); |
1116 | |
1117 static bool is_instance(oop obj) { | |
1118 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1119 } | |
1120 | |
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1121 static bool equals(oop mt1, oop mt2); |
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1122 |
710 | 1123 // Accessors for code generation: |
1124 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1125 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1126 static int form_offset_in_bytes() { return _form_offset; } | |
1127 }; | |
1128 | |
3938 | 1129 #define METHODTYPEFORM_INJECTED_FIELDS(macro) \ |
1130 macro(java_lang_invoke_MethodTypeForm, vmslots, int_signature, true) \ | |
1131 macro(java_lang_invoke_MethodTypeForm, vmlayout, object_signature, true) | |
1132 | |
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1133 class java_lang_invoke_MethodTypeForm: AllStatic { |
710 | 1134 friend class JavaClasses; |
1135 | |
1136 private: | |
1137 static int _vmslots_offset; // number of argument slots needed | |
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1138 static int _vmlayout_offset; // object describing internal calling sequence |
710 | 1139 static int _erasedType_offset; // erasedType = canonical MethodType |
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1140 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric |
710 | 1141 |
1142 static void compute_offsets(); | |
1143 | |
1144 public: | |
1145 // Accessors | |
1146 static int vmslots(oop mtform); | |
3938 | 1147 static void set_vmslots(oop mtform, int vmslots); |
1148 | |
710 | 1149 static oop erasedType(oop mtform); |
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1150 static oop genericInvoker(oop mtform); |
710 | 1151 |
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1152 static oop vmlayout(oop mtform); |
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1153 static oop init_vmlayout(oop mtform, oop cookie); |
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1154 |
710 | 1155 // Accessors for code generation: |
1156 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
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1157 static int vmlayout_offset_in_bytes() { return _vmlayout_offset; } |
710 | 1158 static int erasedType_offset_in_bytes() { return _erasedType_offset; } |
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1159 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; } |
710 | 1160 }; |
1161 | |
1162 | |
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1163 // Interface to java.lang.invoke.CallSite objects |
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1164 |
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1165 class java_lang_invoke_CallSite: AllStatic { |
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1166 friend class JavaClasses; |
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1167 |
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1168 private: |
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1169 static int _target_offset; |
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1170 |
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1171 static void compute_offsets(); |
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1172 |
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1173 public: |
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1174 // Accessors |
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1175 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1176 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1177 |
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1178 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1179 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1180 |
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1181 // Testers |
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1182 static bool is_subclass(klassOop klass) { |
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1183 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1184 } |
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1185 static bool is_instance(oop obj) { |
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1186 return obj != NULL && is_subclass(obj->klass()); |
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1187 } |
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1188 |
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1189 // Accessors for code generation: |
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1190 static int target_offset_in_bytes() { return _target_offset; } |
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1191 }; |
710 | 1192 |
1193 | |
0 | 1194 // Interface to java.security.AccessControlContext objects |
1195 | |
1196 class java_security_AccessControlContext: AllStatic { | |
1197 private: | |
1198 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1199 // so we compute the offsets at startup rather than hard-wiring them. | |
1200 static int _context_offset; | |
1201 static int _privilegedContext_offset; | |
1202 static int _isPrivileged_offset; | |
1203 | |
1204 static void compute_offsets(); | |
1205 public: | |
1206 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1207 | |
1208 // Debugging/initialization | |
1209 friend class JavaClasses; | |
1210 }; | |
1211 | |
1212 | |
1213 // Interface to java.lang.ClassLoader objects | |
1214 | |
1215 class java_lang_ClassLoader : AllStatic { | |
1216 private: | |
1217 enum { | |
1218 hc_parent_offset = 0 | |
1219 }; | |
1220 | |
3938 | 1221 static bool offsets_computed; |
0 | 1222 static int parent_offset; |
3938 | 1223 static int parallelCapable_offset; |
1224 | |
1225 static void compute_offsets(); | |
0 | 1226 |
1227 public: | |
1228 static oop parent(oop loader); | |
1229 | |
3938 | 1230 // Support for parallelCapable field |
1231 static bool parallelCapable(oop the_class_mirror); | |
1232 | |
0 | 1233 static bool is_trusted_loader(oop loader); |
1234 | |
1235 // Fix for 4474172 | |
1236 static oop non_reflection_class_loader(oop loader); | |
1237 | |
1238 // Debugging | |
1239 friend class JavaClasses; | |
1240 }; | |
1241 | |
1242 | |
1243 // Interface to java.lang.System objects | |
1244 | |
1245 class java_lang_System : AllStatic { | |
1246 private: | |
1247 enum { | |
1248 hc_static_in_offset = 0, | |
1249 hc_static_out_offset = 1, | |
1250 hc_static_err_offset = 2 | |
1251 }; | |
1252 | |
1253 static int static_in_offset; | |
1254 static int static_out_offset; | |
1255 static int static_err_offset; | |
1256 | |
1257 public: | |
1258 static int in_offset_in_bytes(); | |
1259 static int out_offset_in_bytes(); | |
1260 static int err_offset_in_bytes(); | |
1261 | |
1262 // Debugging | |
1263 friend class JavaClasses; | |
1264 }; | |
1265 | |
1266 | |
1267 // Interface to java.lang.StackTraceElement objects | |
1268 | |
1269 class java_lang_StackTraceElement: AllStatic { | |
1270 private: | |
1271 enum { | |
1272 hc_declaringClass_offset = 0, | |
1273 hc_methodName_offset = 1, | |
1274 hc_fileName_offset = 2, | |
1275 hc_lineNumber_offset = 3 | |
1276 }; | |
1277 | |
1278 static int declaringClass_offset; | |
1279 static int methodName_offset; | |
1280 static int fileName_offset; | |
1281 static int lineNumber_offset; | |
1282 | |
1283 public: | |
1284 // Setters | |
1285 static void set_declaringClass(oop element, oop value); | |
1286 static void set_methodName(oop element, oop value); | |
1287 static void set_fileName(oop element, oop value); | |
1288 static void set_lineNumber(oop element, int value); | |
1289 | |
1290 // Create an instance of StackTraceElement | |
1291 static oop create(methodHandle m, int bci, TRAPS); | |
1292 | |
1293 // Debugging | |
1294 friend class JavaClasses; | |
1295 }; | |
1296 | |
1297 | |
1298 // Interface to java.lang.AssertionStatusDirectives objects | |
1299 | |
1300 class java_lang_AssertionStatusDirectives: AllStatic { | |
1301 private: | |
1302 enum { | |
1303 hc_classes_offset, | |
1304 hc_classEnabled_offset, | |
1305 hc_packages_offset, | |
1306 hc_packageEnabled_offset, | |
1307 hc_deflt_offset | |
1308 }; | |
1309 | |
1310 static int classes_offset; | |
1311 static int classEnabled_offset; | |
1312 static int packages_offset; | |
1313 static int packageEnabled_offset; | |
1314 static int deflt_offset; | |
1315 | |
1316 public: | |
1317 // Setters | |
1318 static void set_classes(oop obj, oop val); | |
1319 static void set_classEnabled(oop obj, oop val); | |
1320 static void set_packages(oop obj, oop val); | |
1321 static void set_packageEnabled(oop obj, oop val); | |
1322 static void set_deflt(oop obj, bool val); | |
1323 // Debugging | |
1324 friend class JavaClasses; | |
1325 }; | |
1326 | |
1327 | |
1328 class java_nio_Buffer: AllStatic { | |
1329 private: | |
1330 static int _limit_offset; | |
1331 | |
1332 public: | |
1333 static int limit_offset(); | |
1334 static void compute_offsets(); | |
1335 }; | |
1336 | |
1337 class sun_misc_AtomicLongCSImpl: AllStatic { | |
1338 private: | |
1339 static int _value_offset; | |
1340 | |
1341 public: | |
1342 static int value_offset(); | |
1343 static void compute_offsets(); | |
1344 }; | |
1345 | |
1346 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1347 private: | |
1348 static int _owner_offset; | |
1349 public: | |
1350 static void initialize(TRAPS); | |
1351 static oop get_owner_threadObj(oop obj); | |
1352 }; | |
1353 | |
3938 | 1354 // Use to declare fields that need to be injected into Java classes |
1355 // for the JVM to use. The name_index and signature_index are | |
1356 // declared in vmSymbols. The may_be_java flag is used to declare | |
1357 // fields that might already exist in Java but should be injected if | |
1358 // they don't. Otherwise the field is unconditionally injected and | |
1359 // the JVM uses the injected one. This is to ensure that name | |
1360 // collisions don't occur. In general may_be_java should be false | |
1361 // unless there's a good reason. | |
1362 | |
1363 class InjectedField { | |
1364 public: | |
1365 const SystemDictionary::WKID klass_id; | |
1366 const vmSymbols::SID name_index; | |
1367 const vmSymbols::SID signature_index; | |
1368 const bool may_be_java; | |
1369 | |
1370 | |
1371 klassOop klass() const { return SystemDictionary::well_known_klass(klass_id); } | |
1372 Symbol* name() const { return lookup_symbol(name_index); } | |
1373 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1374 | |
1375 int compute_offset(); | |
1376 | |
1377 // Find the Symbol for this index | |
1378 static Symbol* lookup_symbol(int symbol_index) { | |
1379 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1380 } | |
1381 }; | |
1382 | |
1383 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1384 klass##_##name##_enum, | |
1385 | |
1386 #define ALL_INJECTED_FIELDS(macro) \ | |
1387 CLASS_INJECTED_FIELDS(macro) \ | |
1388 METHODHANDLE_INJECTED_FIELDS(macro) \ | |
1389 DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \ | |
1390 MEMBERNAME_INJECTED_FIELDS(macro) \ | |
1391 METHODTYPEFORM_INJECTED_FIELDS(macro) | |
1392 | |
0 | 1393 // Interface to hard-coded offset checking |
1394 | |
1395 class JavaClasses : AllStatic { | |
1396 private: | |
3938 | 1397 |
1398 static InjectedField _injected_fields[]; | |
1399 | |
0 | 1400 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1401 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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1402 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1403 |
0 | 1404 public: |
3938 | 1405 enum InjectedFieldID { |
1406 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1407 MAX_enum | |
1408 }; | |
1409 | |
1410 static int compute_injected_offset(InjectedFieldID id); | |
1411 | |
0 | 1412 static void compute_hard_coded_offsets(); |
1413 static void compute_offsets(); | |
1414 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1415 |
1416 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1417 }; |
1972 | 1418 |
3938 | 1419 #undef DECLARE_INJECTED_FIELD_ENUM |
1420 | |
1972 | 1421 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |