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--- old/src/share/vm/memory/universe.hpp
+++ new/src/share/vm/memory/universe.hpp
1 1 /*
2 - * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
2 + * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_MEMORY_UNIVERSE_HPP
26 26 #define SHARE_VM_MEMORY_UNIVERSE_HPP
27 27
28 28 #include "runtime/handles.hpp"
29 29 #include "utilities/array.hpp"
30 30 #include "utilities/growableArray.hpp"
31 31
32 32 // Universe is a name space holding known system classes and objects in the VM.
33 33 //
34 34 // Loaded classes are accessible through the SystemDictionary.
35 35 //
36 36 // The object heap is allocated and accessed through Universe, and various allocation
37 37 // support is provided. Allocation by the interpreter and compiled code is done inline
38 38 // and bails out to Scavenge::invoke_and_allocate.
39 39
40 40 class CollectedHeap;
41 41 class DeferredObjAllocEvent;
42 42
43 43
44 44 // A helper class for caching a Method* when the user of the cache
45 45 // only cares about the latest version of the Method*. This cache safely
46 46 // interacts with the RedefineClasses API.
47 47
48 48 class LatestMethodCache : public CHeapObj<mtClass> {
49 49 // We save the Klass* and the idnum of Method* in order to get
50 50 // the current cached Method*.
51 51 private:
52 52 Klass* _klass;
53 53 int _method_idnum;
54 54
55 55 public:
56 56 LatestMethodCache() { _klass = NULL; _method_idnum = -1; }
57 57 ~LatestMethodCache() { _klass = NULL; _method_idnum = -1; }
58 58
59 59 void init(Klass* k, Method* m);
60 60 Klass* klass() const { return _klass; }
61 61 int method_idnum() const { return _method_idnum; }
62 62
63 63 Method* get_method();
64 64
65 65 // Enhanced Class Redefinition support
66 66 void classes_do(void f(Klass*)) {
67 67 f(_klass);
68 68 }
69 69
70 70 // CDS support. Replace the klass in this with the archive version
71 71 // could use this for Enhanced Class Redefinition also.
72 72 void serialize(SerializeClosure* f) {
73 73 f->do_ptr((void**)&_klass);
74 74 }
75 75 };
76 76
77 77
78 78 // For UseCompressedOops.
79 79 struct NarrowPtrStruct {
80 80 // Base address for oop-within-java-object materialization.
81 81 // NULL if using wide oops or zero based narrow oops.
82 82 address _base;
83 83 // Number of shift bits for encoding/decoding narrow ptrs.
84 84 // 0 if using wide ptrs or zero based unscaled narrow ptrs,
85 85 // LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise.
86 86 int _shift;
87 87 // Generate code with implicit null checks for narrow ptrs.
88 88 bool _use_implicit_null_checks;
89 89 };
90 90
91 91 enum VerifyOption {
92 92 VerifyOption_Default = 0,
93 93
94 94 // G1
95 95 VerifyOption_G1UsePrevMarking = VerifyOption_Default,
96 96 VerifyOption_G1UseNextMarking = VerifyOption_G1UsePrevMarking + 1,
97 97 VerifyOption_G1UseMarkWord = VerifyOption_G1UseNextMarking + 1
98 98 };
99 99
100 100 class Universe: AllStatic {
101 101 // Ugh. Universe is much too friendly.
102 102 friend class MarkSweep;
103 103 friend class oopDesc;
104 104 friend class ClassLoader;
105 105 friend class Arguments;
106 106 friend class SystemDictionary;
107 107 friend class VMStructs;
108 108 friend class VM_PopulateDumpSharedSpace;
109 109 friend class Metaspace;
110 110
111 111 friend jint universe_init();
112 112 friend void universe2_init();
113 113 friend bool universe_post_init();
114 114
115 115 private:
116 116 // Known classes in the VM
117 117 static Klass* _boolArrayKlassObj;
118 118 static Klass* _byteArrayKlassObj;
119 119 static Klass* _charArrayKlassObj;
120 120 static Klass* _intArrayKlassObj;
121 121 static Klass* _shortArrayKlassObj;
122 122 static Klass* _longArrayKlassObj;
123 123 static Klass* _singleArrayKlassObj;
124 124 static Klass* _doubleArrayKlassObj;
125 125 static Klass* _typeArrayKlassObjs[T_VOID+1];
126 126
127 127 static Klass* _objectArrayKlassObj;
128 128
129 129 // Known objects in the VM
130 130
131 131 // Primitive objects
132 132 static oop _int_mirror;
133 133 static oop _float_mirror;
134 134 static oop _double_mirror;
135 135 static oop _byte_mirror;
136 136 static oop _bool_mirror;
137 137 static oop _char_mirror;
138 138 static oop _long_mirror;
139 139 static oop _short_mirror;
140 140 static oop _void_mirror;
141 141
142 142 static oop _main_thread_group; // Reference to the main thread group object
143 143 static oop _system_thread_group; // Reference to the system thread group object
144 144
145 145 static objArrayOop _the_empty_class_klass_array; // Canonicalized obj array of type java.lang.Class
146 146 static oop _the_null_string; // A cache of "null" as a Java string
147 147 static oop _the_min_jint_string; // A cache of "-2147483648" as a Java string
148 148 static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects
149 149 static LatestMethodCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector
150 150 static LatestMethodCache* _pd_implies_cache; // method for checking protection domain attributes
151 151 static LatestMethodCache* _throw_illegal_access_error_cache; // Unsafe.throwIllegalAccessError() method
152 152
153 153 // preallocated error objects (no backtrace)
154 154 static oop _out_of_memory_error_java_heap;
155 155 static oop _out_of_memory_error_metaspace;
156 156 static oop _out_of_memory_error_class_metaspace;
157 157 static oop _out_of_memory_error_array_size;
158 158 static oop _out_of_memory_error_gc_overhead_limit;
159 159 static oop _out_of_memory_error_realloc_objects;
160 160
161 161 static Array<int>* _the_empty_int_array; // Canonicalized int array
162 162 static Array<u2>* _the_empty_short_array; // Canonicalized short array
163 163 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass obj array
164 164 static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array
165 165
166 166 static Array<Klass*>* _the_array_interfaces_array;
167 167
168 168 // array of preallocated error objects with backtrace
169 169 static objArrayOop _preallocated_out_of_memory_error_array;
170 170
171 171 // number of preallocated error objects available for use
172 172 static volatile jint _preallocated_out_of_memory_error_avail_count;
173 173
174 174 static oop _null_ptr_exception_instance; // preallocated exception object
175 175 static oop _arithmetic_exception_instance; // preallocated exception object
176 176 static oop _virtual_machine_error_instance; // preallocated exception object
177 177 // The object used as an exception dummy when exceptions are thrown for
178 178 // the vm thread.
179 179 static oop _vm_exception;
180 180
181 181 static oop _allocation_context_notification_obj;
182 182
183 183 // The particular choice of collected heap.
184 184 static CollectedHeap* _collectedHeap;
185 185
186 186 static intptr_t _non_oop_bits;
187 187
188 188 // For UseCompressedOops.
189 189 static struct NarrowPtrStruct _narrow_oop;
190 190 // For UseCompressedClassPointers.
191 191 static struct NarrowPtrStruct _narrow_klass;
192 192 static address _narrow_ptrs_base;
193 193
194 194 // array of dummy objects used with +FullGCAlot
195 195 debug_only(static objArrayOop _fullgc_alot_dummy_array;)
196 196 // index of next entry to clear
197 197 debug_only(static int _fullgc_alot_dummy_next;)
198 198
199 199 // Compiler/dispatch support
200 200 static int _base_vtable_size; // Java vtbl size of klass Object (in words)
201 201
202 202 // Initialization
203 203 static bool _bootstrapping; // true during genesis
204 204 static bool _fully_initialized; // true after universe_init and initialize_vtables called
205 205
206 206 // the array of preallocated errors with backtraces
207 207 static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; }
208 208
209 209 // generate an out of memory error; if possible using an error with preallocated backtrace;
210 210 // otherwise return the given default error.
211 211 static oop gen_out_of_memory_error(oop default_err);
212 212
213 213 // Historic gc information
214 214 static size_t _heap_capacity_at_last_gc;
215 215 static size_t _heap_used_at_last_gc;
216 216
217 217 static jint initialize_heap();
218 218 static void initialize_basic_type_mirrors(TRAPS);
219 219 static void fixup_mirrors(TRAPS);
220 220
221 221 static void reinitialize_vtable_of(KlassHandle h_k, TRAPS);
222 222 static void reinitialize_itables(TRAPS);
223 223 static void compute_base_vtable_size(); // compute vtable size of class Object
224 224
225 225 static void genesis(TRAPS); // Create the initial world
226 226
227 227 // Mirrors for primitive classes (created eagerly)
228 228 static oop check_mirror(oop m) {
229 229 assert(m != NULL, "mirror not initialized");
230 230 return m;
231 231 }
232 232
233 233 static void set_narrow_oop_base(address base) {
234 234 assert(UseCompressedOops, "no compressed oops?");
235 235 _narrow_oop._base = base;
236 236 }
237 237 static void set_narrow_klass_base(address base) {
238 238 assert(UseCompressedClassPointers, "no compressed klass ptrs?");
239 239 _narrow_klass._base = base;
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240 240 }
241 241 static void set_narrow_oop_use_implicit_null_checks(bool use) {
242 242 assert(UseCompressedOops, "no compressed ptrs?");
243 243 _narrow_oop._use_implicit_null_checks = use;
244 244 }
245 245
246 246 // Debugging
247 247 static int _verify_count; // number of verifies done
248 248 // True during call to verify(). Should only be set/cleared in verify().
249 249 static bool _verify_in_progress;
250 + static long verify_flags;
250 251
251 252 static void compute_verify_oop_data();
252 253
253 254 public:
254 255 // Known classes in the VM
255 256 static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; }
256 257 static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; }
257 258 static Klass* charArrayKlassObj() { return _charArrayKlassObj; }
258 259 static Klass* intArrayKlassObj() { return _intArrayKlassObj; }
259 260 static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; }
260 261 static Klass* longArrayKlassObj() { return _longArrayKlassObj; }
261 262 static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; }
262 263 static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; }
263 264
264 265 static Klass* objectArrayKlassObj() {
265 266 return _objectArrayKlassObj;
266 267 }
267 268
268 269 static Klass* typeArrayKlassObj(BasicType t) {
269 270 assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t)));
270 271 assert(_typeArrayKlassObjs[t] != NULL, "domain check");
271 272 return _typeArrayKlassObjs[t];
272 273 }
273 274
274 275 // Known objects in the VM
275 276 static oop int_mirror() { return check_mirror(_int_mirror); }
276 277 static oop float_mirror() { return check_mirror(_float_mirror); }
277 278 static oop double_mirror() { return check_mirror(_double_mirror); }
278 279 static oop byte_mirror() { return check_mirror(_byte_mirror); }
279 280 static oop bool_mirror() { return check_mirror(_bool_mirror); }
280 281 static oop char_mirror() { return check_mirror(_char_mirror); }
281 282 static oop long_mirror() { return check_mirror(_long_mirror); }
282 283 static oop short_mirror() { return check_mirror(_short_mirror); }
283 284 static oop void_mirror() { return check_mirror(_void_mirror); }
284 285
285 286 // table of same
286 287 static oop _mirrors[T_VOID+1];
287 288
288 289 static oop java_mirror(BasicType t) {
289 290 assert((uint)t < T_VOID+1, "range check");
290 291 return check_mirror(_mirrors[t]);
291 292 }
292 293 static oop main_thread_group() { return _main_thread_group; }
293 294 static void set_main_thread_group(oop group) { _main_thread_group = group;}
294 295
295 296 static oop system_thread_group() { return _system_thread_group; }
296 297 static void set_system_thread_group(oop group) { _system_thread_group = group;}
297 298
298 299 static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; }
299 300 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; }
300 301 static oop the_null_string() { return _the_null_string; }
301 302 static oop the_min_jint_string() { return _the_min_jint_string; }
302 303
303 304 static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); }
304 305 static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); }
305 306
306 307 static Method* protection_domain_implies_method() { return _pd_implies_cache->get_method(); }
307 308 static Method* throw_illegal_access_error() { return _throw_illegal_access_error_cache->get_method(); }
308 309
309 310 static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; }
310 311 static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; }
311 312 static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; }
312 313 static oop vm_exception() { return _vm_exception; }
313 314
314 315 static inline oop allocation_context_notification_obj();
315 316 static inline void set_allocation_context_notification_obj(oop obj);
316 317
317 318 static Array<int>* the_empty_int_array() { return _the_empty_int_array; }
318 319 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; }
319 320 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; }
320 321 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; }
321 322
322 323 // OutOfMemoryError support. Returns an error with the required message. The returned error
323 324 // may or may not have a backtrace. If error has a backtrace then the stack trace is already
324 325 // filled in.
325 326 static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); }
326 327 static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); }
327 328 static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); }
328 329 static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); }
329 330 static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); }
330 331 static oop out_of_memory_error_realloc_objects() { return gen_out_of_memory_error(_out_of_memory_error_realloc_objects); }
331 332
332 333 // Accessors needed for fast allocation
333 334 static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; }
334 335 static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; }
335 336 static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; }
336 337 static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; }
337 338 static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; }
338 339 static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; }
339 340 static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; }
340 341 static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; }
341 342 static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; }
342 343
343 344 // The particular choice of collected heap.
344 345 static CollectedHeap* heap() { return _collectedHeap; }
345 346
346 347 // For UseCompressedOops
347 348 // Narrow Oop encoding mode:
348 349 // 0 - Use 32-bits oops without encoding when
349 350 // NarrowOopHeapBaseMin + heap_size < 4Gb
350 351 // 1 - Use zero based compressed oops with encoding when
351 352 // NarrowOopHeapBaseMin + heap_size < 32Gb
352 353 // 2 - Use compressed oops with heap base + encoding.
353 354 enum NARROW_OOP_MODE {
354 355 UnscaledNarrowOop = 0,
355 356 ZeroBasedNarrowOop = 1,
356 357 HeapBasedNarrowOop = 2
357 358 };
358 359 static NARROW_OOP_MODE narrow_oop_mode();
359 360 static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode);
360 361 static char* preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode);
361 362 static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode);
362 363 static address narrow_oop_base() { return _narrow_oop._base; }
363 364 static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); }
364 365 static int narrow_oop_shift() { return _narrow_oop._shift; }
365 366 static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; }
366 367
367 368 // For UseCompressedClassPointers
368 369 static address narrow_klass_base() { return _narrow_klass._base; }
369 370 static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); }
370 371 static int narrow_klass_shift() { return _narrow_klass._shift; }
371 372 static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; }
372 373
373 374 static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; }
374 375 static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; }
375 376 static address narrow_ptrs_base() { return _narrow_ptrs_base; }
376 377
377 378 static void print_compressed_oops_mode();
378 379
379 380 // this is set in vm_version on sparc (and then reset in universe afaict)
380 381 static void set_narrow_oop_shift(int shift) {
381 382 _narrow_oop._shift = shift;
382 383 }
383 384
384 385 static void set_narrow_klass_shift(int shift) {
385 386 assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs");
386 387 _narrow_klass._shift = shift;
387 388 }
388 389
389 390 // Reserve Java heap and determine CompressedOops mode
390 391 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);
391 392
392 393 // Historic gc information
393 394 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; }
394 395 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }
395 396 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; }
396 397 static void update_heap_info_at_gc();
397 398
398 399 // Testers
399 400 static bool is_bootstrapping() { return _bootstrapping; }
400 401 static bool is_fully_initialized() { return _fully_initialized; }
401 402
402 403 static inline bool element_type_should_be_aligned(BasicType type);
403 404 static inline bool field_type_should_be_aligned(BasicType type);
404 405 static bool on_page_boundary(void* addr);
405 406 static bool should_fill_in_stack_trace(Handle throwable);
406 407 static void check_alignment(uintx size, uintx alignment, const char* name);
407 408
408 409 // Finalizer support.
409 410 static void run_finalizers_on_exit();
410 411
411 412 // Iteration
412 413
413 414 // Apply "f" to the addresses of all the direct heap pointers maintained
414 415 // as static fields of "Universe".
415 416 static void oops_do(OopClosure* f, bool do_all = false);
416 417
417 418 // CDS support
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418 419 static void serialize(SerializeClosure* f, bool do_all = false);
419 420
420 421 // Apply "f" to all klasses for basic types (classes not present in
421 422 // SystemDictionary).
422 423 static void basic_type_classes_do(void f(Klass*));
423 424
424 425 // For sharing -- fill in a list of known vtable pointers.
425 426 static void init_self_patching_vtbl_list(void** list, int count);
426 427
427 428 // Debugging
429 + enum VERIFY_FLAGS {
430 + Verify_Threads = 1,
431 + Verify_Heap = 2,
432 + Verify_SymbolTable = 4,
433 + Verify_StringTable = 8,
434 + Verify_CodeCache = 16,
435 + Verify_SystemDictionary = 32,
436 + Verify_ClassLoaderDataGraph = 64,
437 + Verify_MetaspaceAux = 128,
438 + Verify_JNIHandles = 256,
439 + Verify_CHeap = 512,
440 + Verify_CodeCacheOops = 1024,
441 + Verify_All = -1
442 + };
443 + static void initialize_verify_flags();
444 + static bool should_verify_subset(uint subset);
428 445 static bool verify_in_progress() { return _verify_in_progress; }
429 446 static void verify(VerifyOption option, const char* prefix, bool silent = VerifySilently);
430 447 static void verify(const char* prefix, bool silent = VerifySilently) {
431 448 verify(VerifyOption_Default, prefix, silent);
432 449 }
433 450 static void verify(bool silent = VerifySilently) {
434 451 verify("", silent);
435 452 }
436 453
437 454 static int verify_count() { return _verify_count; }
438 455 // The default behavior is to call print_on() on gclog_or_tty.
439 456 static void print();
440 457 // The extended parameter determines which method on the heap will
441 458 // be called: print_on() (extended == false) or print_extended_on()
442 459 // (extended == true).
443 460 static void print_on(outputStream* st, bool extended = false);
444 461 static void print_heap_at_SIGBREAK();
445 462 static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); }
446 463 static void print_heap_after_gc() { print_heap_after_gc(gclog_or_tty); }
447 464 static void print_heap_before_gc(outputStream* st, bool ignore_extended = false);
448 465 static void print_heap_after_gc(outputStream* st, bool ignore_extended = false);
449 466
450 467 // Change the number of dummy objects kept reachable by the full gc dummy
451 468 // array; this should trigger relocation in a sliding compaction collector.
452 469 debug_only(static bool release_fullgc_alot_dummy();)
453 470 // The non-oop pattern (see compiledIC.hpp, etc)
454 471 static void* non_oop_word();
455 472
456 473 // Oop verification (see MacroAssembler::verify_oop)
457 474 static uintptr_t verify_oop_mask() PRODUCT_RETURN0;
458 475 static uintptr_t verify_oop_bits() PRODUCT_RETURN0;
459 476 static uintptr_t verify_mark_bits() PRODUCT_RETURN0;
460 477 static uintptr_t verify_mark_mask() PRODUCT_RETURN0;
461 478
462 479 // Flushing and deoptimization
463 480 static void flush_dependents_on(instanceKlassHandle dependee);
464 481 static void flush_dependents_on(Handle call_site, Handle method_handle);
465 482 #ifdef HOTSWAP
466 483 // Flushing and deoptimization in case of evolution
467 484 static void flush_evol_dependents_on(instanceKlassHandle dependee);
468 485 #endif // HOTSWAP
469 486 // Support for fullspeed debugging
470 487 static void flush_dependents_on_method(methodHandle dependee);
471 488
472 489 // Compiler support
473 490 static int base_vtable_size() { return _base_vtable_size; }
474 491 };
475 492
476 493 class DeferredObjAllocEvent : public CHeapObj<mtInternal> {
477 494 private:
478 495 oop _oop;
479 496 size_t _bytesize;
480 497 jint _arena_id;
481 498
482 499 public:
483 500 DeferredObjAllocEvent(const oop o, const size_t s, const jint id) {
484 501 _oop = o;
485 502 _bytesize = s;
486 503 _arena_id = id;
487 504 }
488 505
489 506 ~DeferredObjAllocEvent() {
490 507 }
491 508
492 509 jint arena_id() { return _arena_id; }
493 510 size_t bytesize() { return _bytesize; }
494 511 oop get_oop() { return _oop; }
495 512 };
496 513
497 514 #endif // SHARE_VM_MEMORY_UNIVERSE_HPP
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