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--- old/src/share/vm/memory/universe.hpp
+++ new/src/share/vm/memory/universe.hpp
1 1 /*
2 2 * Copyright (c) 1997, 2015, 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 SystemDictionary;
106 106 friend class ReservedHeapSpace;
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 static LatestMethodCache* _do_stack_walk_cache; // method for stack walker callback
153 153
154 154 // preallocated error objects (no backtrace)
155 155 static oop _out_of_memory_error_java_heap;
156 156 static oop _out_of_memory_error_metaspace;
157 157 static oop _out_of_memory_error_class_metaspace;
158 158 static oop _out_of_memory_error_array_size;
159 159 static oop _out_of_memory_error_gc_overhead_limit;
160 160 static oop _out_of_memory_error_realloc_objects;
161 161
162 162 // preallocated cause message for delayed StackOverflowError
163 163 static oop _delayed_stack_overflow_error_message;
164 164
165 165 static Array<int>* _the_empty_int_array; // Canonicalized int array
166 166 static Array<u2>* _the_empty_short_array; // Canonicalized short array
167 167 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass obj array
168 168 static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array
169 169
170 170 static Array<Klass*>* _the_array_interfaces_array;
171 171
172 172 // array of preallocated error objects with backtrace
173 173 static objArrayOop _preallocated_out_of_memory_error_array;
174 174
175 175 // number of preallocated error objects available for use
176 176 static volatile jint _preallocated_out_of_memory_error_avail_count;
177 177
178 178 static oop _null_ptr_exception_instance; // preallocated exception object
179 179 static oop _arithmetic_exception_instance; // preallocated exception object
180 180 static oop _virtual_machine_error_instance; // preallocated exception object
181 181 // The object used as an exception dummy when exceptions are thrown for
182 182 // the vm thread.
183 183 static oop _vm_exception;
184 184
185 185 static oop _allocation_context_notification_obj;
186 186
187 187 // The particular choice of collected heap.
188 188 static CollectedHeap* _collectedHeap;
189 189
190 190 static intptr_t _non_oop_bits;
191 191
192 192 // For UseCompressedOops.
193 193 static struct NarrowPtrStruct _narrow_oop;
194 194 // For UseCompressedClassPointers.
195 195 static struct NarrowPtrStruct _narrow_klass;
196 196 static address _narrow_ptrs_base;
197 197
198 198 // array of dummy objects used with +FullGCAlot
199 199 debug_only(static objArrayOop _fullgc_alot_dummy_array;)
200 200 // index of next entry to clear
201 201 debug_only(static int _fullgc_alot_dummy_next;)
202 202
203 203 // Compiler/dispatch support
204 204 static int _base_vtable_size; // Java vtbl size of klass Object (in words)
205 205
206 206 // Initialization
207 207 static bool _bootstrapping; // true during genesis
208 208 static bool _fully_initialized; // true after universe_init and initialize_vtables called
209 209
210 210 // the array of preallocated errors with backtraces
211 211 static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; }
212 212
213 213 // generate an out of memory error; if possible using an error with preallocated backtrace;
214 214 // otherwise return the given default error.
215 215 static oop gen_out_of_memory_error(oop default_err);
216 216
217 217 // Historic gc information
218 218 static size_t _heap_capacity_at_last_gc;
219 219 static size_t _heap_used_at_last_gc;
220 220
221 221 template <class Heap, class Policy> static CollectedHeap* create_heap_with_policy();
222 222 static CollectedHeap* create_heap();
223 223 static CollectedHeap* create_heap_ext();
224 224 static jint initialize_heap();
225 225 static void initialize_basic_type_mirrors(TRAPS);
226 226 static void fixup_mirrors(TRAPS);
227 227
228 228 static void reinitialize_vtable_of(KlassHandle h_k, TRAPS);
229 229 static void reinitialize_itables(TRAPS);
230 230 static void compute_base_vtable_size(); // compute vtable size of class Object
231 231
232 232 static void genesis(TRAPS); // Create the initial world
233 233
234 234 // Mirrors for primitive classes (created eagerly)
235 235 static oop check_mirror(oop m) {
236 236 assert(m != NULL, "mirror not initialized");
237 237 return m;
238 238 }
239 239
240 240 static void set_narrow_oop_base(address base) {
241 241 assert(UseCompressedOops, "no compressed oops?");
242 242 _narrow_oop._base = base;
243 243 }
244 244 static void set_narrow_klass_base(address base) {
245 245 assert(UseCompressedClassPointers, "no compressed klass ptrs?");
246 246 _narrow_klass._base = base;
247 247 }
248 248 static void set_narrow_oop_use_implicit_null_checks(bool use) {
249 249 assert(UseCompressedOops, "no compressed ptrs?");
250 250 _narrow_oop._use_implicit_null_checks = use;
251 251 }
252 252
253 253 // Debugging
254 254 static int _verify_count; // number of verifies done
255 255
256 256 // True during call to verify(). Should only be set/cleared in verify().
257 257 static bool _verify_in_progress;
258 258
259 259 static uintptr_t _verify_oop_mask;
260 260 static uintptr_t _verify_oop_bits;
261 261
262 262 static void calculate_verify_data(HeapWord* low_boundary, HeapWord* high_boundary) PRODUCT_RETURN;
263 263 static void compute_verify_oop_data();
264 264
265 265 public:
266 266 // Known classes in the VM
267 267 static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; }
268 268 static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; }
269 269 static Klass* charArrayKlassObj() { return _charArrayKlassObj; }
270 270 static Klass* intArrayKlassObj() { return _intArrayKlassObj; }
271 271 static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; }
272 272 static Klass* longArrayKlassObj() { return _longArrayKlassObj; }
273 273 static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; }
274 274 static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; }
275 275
276 276 static Klass* objectArrayKlassObj() {
277 277 return _objectArrayKlassObj;
278 278 }
279 279
280 280 static Klass* typeArrayKlassObj(BasicType t) {
281 281 assert((uint)t < T_VOID+1, "range check for type: %s", type2name(t));
282 282 assert(_typeArrayKlassObjs[t] != NULL, "domain check");
283 283 return _typeArrayKlassObjs[t];
284 284 }
285 285
286 286 // Known objects in the VM
287 287 static oop int_mirror() { return check_mirror(_int_mirror); }
288 288 static oop float_mirror() { return check_mirror(_float_mirror); }
289 289 static oop double_mirror() { return check_mirror(_double_mirror); }
290 290 static oop byte_mirror() { return check_mirror(_byte_mirror); }
291 291 static oop bool_mirror() { return check_mirror(_bool_mirror); }
292 292 static oop char_mirror() { return check_mirror(_char_mirror); }
293 293 static oop long_mirror() { return check_mirror(_long_mirror); }
294 294 static oop short_mirror() { return check_mirror(_short_mirror); }
295 295 static oop void_mirror() { return check_mirror(_void_mirror); }
296 296
297 297 // table of same
298 298 static oop _mirrors[T_VOID+1];
299 299
300 300 static oop java_mirror(BasicType t) {
301 301 assert((uint)t < T_VOID+1, "range check");
302 302 return check_mirror(_mirrors[t]);
303 303 }
304 304 static oop main_thread_group() { return _main_thread_group; }
305 305 static void set_main_thread_group(oop group) { _main_thread_group = group;}
306 306
307 307 static oop system_thread_group() { return _system_thread_group; }
308 308 static void set_system_thread_group(oop group) { _system_thread_group = group;}
309 309
310 310 static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; }
311 311 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; }
312 312 static oop the_null_string() { return _the_null_string; }
313 313 static oop the_min_jint_string() { return _the_min_jint_string; }
314 314
315 315 static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); }
316 316 static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); }
317 317
318 318 static Method* protection_domain_implies_method() { return _pd_implies_cache->get_method(); }
319 319 static Method* throw_illegal_access_error() { return _throw_illegal_access_error_cache->get_method(); }
320 320
321 321 static Method* do_stack_walk_method() { return _do_stack_walk_cache->get_method(); }
322 322
323 323 static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; }
324 324 static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; }
325 325 static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; }
326 326 static oop vm_exception() { return _vm_exception; }
327 327
328 328 static inline oop allocation_context_notification_obj();
329 329 static inline void set_allocation_context_notification_obj(oop obj);
330 330
331 331 static Array<int>* the_empty_int_array() { return _the_empty_int_array; }
332 332 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; }
333 333 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; }
334 334 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; }
335 335
336 336 // OutOfMemoryError support. Returns an error with the required message. The returned error
337 337 // may or may not have a backtrace. If error has a backtrace then the stack trace is already
338 338 // filled in.
339 339 static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); }
340 340 static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); }
341 341 static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); }
342 342 static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); }
343 343 static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); }
344 344 static oop out_of_memory_error_realloc_objects() { return gen_out_of_memory_error(_out_of_memory_error_realloc_objects); }
345 345 static oop delayed_stack_overflow_error_message() { return _delayed_stack_overflow_error_message; }
346 346
347 347 // Accessors needed for fast allocation
348 348 static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; }
349 349 static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; }
350 350 static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; }
351 351 static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; }
352 352 static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; }
353 353 static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; }
354 354 static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; }
355 355 static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; }
356 356 static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; }
357 357
358 358 // The particular choice of collected heap.
359 359 static CollectedHeap* heap() { return _collectedHeap; }
360 360
361 361 // For UseCompressedOops
362 362 // Narrow Oop encoding mode:
363 363 // 0 - Use 32-bits oops without encoding when
364 364 // NarrowOopHeapBaseMin + heap_size < 4Gb
365 365 // 1 - Use zero based compressed oops with encoding when
366 366 // NarrowOopHeapBaseMin + heap_size < 32Gb
367 367 // 2 - Use compressed oops with disjoint heap base if
368 368 // base is 32G-aligned and base > 0. This allows certain
369 369 // optimizations in encoding/decoding.
370 370 // Disjoint: Bits used in base are disjoint from bits used
371 371 // for oops ==> oop = (cOop << 3) | base. One can disjoint
372 372 // the bits of an oop into base and compressed oop.
373 373 // 3 - Use compressed oops with heap base + encoding.
374 374 enum NARROW_OOP_MODE {
375 375 UnscaledNarrowOop = 0,
376 376 ZeroBasedNarrowOop = 1,
377 377 DisjointBaseNarrowOop = 2,
378 378 HeapBasedNarrowOop = 3,
379 379 AnyNarrowOopMode = 4
380 380 };
381 381 static NARROW_OOP_MODE narrow_oop_mode();
382 382 static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode);
383 383 static char* preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode);
384 384 static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode);
385 385 static address narrow_oop_base() { return _narrow_oop._base; }
386 386 // Test whether bits of addr and possible offsets into the heap overlap.
387 387 static bool is_disjoint_heap_base_address(address addr) {
388 388 return (((uint64_t)(intptr_t)addr) &
389 389 (((uint64_t)UCONST64(0xFFFFffffFFFFffff)) >> (32-LogMinObjAlignmentInBytes))) == 0;
390 390 }
391 391 // Check for disjoint base compressed oops.
392 392 static bool narrow_oop_base_disjoint() {
393 393 return _narrow_oop._base != NULL && is_disjoint_heap_base_address(_narrow_oop._base);
394 394 }
395 395 // Check for real heapbased compressed oops.
396 396 // We must subtract the base as the bits overlap.
397 397 // If we negate above function, we also get unscaled and zerobased.
398 398 static bool narrow_oop_base_overlaps() {
399 399 return _narrow_oop._base != NULL && !is_disjoint_heap_base_address(_narrow_oop._base);
400 400 }
401 401 static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); }
402 402 static int narrow_oop_shift() { return _narrow_oop._shift; }
403 403 static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; }
404 404
405 405 // For UseCompressedClassPointers
406 406 static address narrow_klass_base() { return _narrow_klass._base; }
407 407 static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); }
408 408 static int narrow_klass_shift() { return _narrow_klass._shift; }
409 409 static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; }
410 410
411 411 static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; }
412 412 static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; }
413 413 static address narrow_ptrs_base() { return _narrow_ptrs_base; }
414 414
415 415 static void print_compressed_oops_mode(outputStream* st);
416 416
417 417 // this is set in vm_version on sparc (and then reset in universe afaict)
418 418 static void set_narrow_oop_shift(int shift) {
419 419 _narrow_oop._shift = shift;
420 420 }
421 421
422 422 static void set_narrow_klass_shift(int shift) {
423 423 assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs");
424 424 _narrow_klass._shift = shift;
425 425 }
426 426
427 427 // Reserve Java heap and determine CompressedOops mode
428 428 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);
429 429
430 430 // Historic gc information
431 431 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; }
432 432 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }
433 433 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; }
434 434 static void update_heap_info_at_gc();
435 435
436 436 // Testers
437 437 static bool is_bootstrapping() { return _bootstrapping; }
438 438 static bool is_fully_initialized() { return _fully_initialized; }
439 439
440 440 static inline bool element_type_should_be_aligned(BasicType type);
441 441 static inline bool field_type_should_be_aligned(BasicType type);
442 442 static bool on_page_boundary(void* addr);
443 443 static bool should_fill_in_stack_trace(Handle throwable);
444 444 static void check_alignment(uintx size, uintx alignment, const char* name);
445 445
446 446 // Finalizer support.
447 447 static void run_finalizers_on_exit();
448 448
449 449 // Iteration
450 450
451 451 // Apply "f" to the addresses of all the direct heap pointers maintained
452 452 // as static fields of "Universe".
453 453 static void oops_do(OopClosure* f, bool do_all = false);
454 454
455 455 // CDS support
456 456 static void serialize(SerializeClosure* f, bool do_all = false);
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457 457
458 458 // Apply "f" to all klasses for basic types (classes not present in
459 459 // SystemDictionary).
460 460 static void basic_type_classes_do(void f(Klass*));
461 461
462 462 // For sharing -- fill in a list of known vtable pointers.
463 463 static void init_self_patching_vtbl_list(void** list, int count);
464 464
465 465 // Debugging
466 466 static bool verify_in_progress() { return _verify_in_progress; }
467 + static bool should_verify_subset(const char* subset);
467 468 static void verify(VerifyOption option, const char* prefix);
468 469 static void verify(const char* prefix) {
469 470 verify(VerifyOption_Default, prefix);
470 471 }
471 472 static void verify() {
472 473 verify("");
473 474 }
474 475
475 476 static int verify_count() { return _verify_count; }
476 477 static void print_on(outputStream* st);
477 478 static void print_heap_at_SIGBREAK();
478 479 static void print_heap_before_gc();
479 480 static void print_heap_after_gc();
480 481
481 482 // Change the number of dummy objects kept reachable by the full gc dummy
482 483 // array; this should trigger relocation in a sliding compaction collector.
483 484 debug_only(static bool release_fullgc_alot_dummy();)
484 485 // The non-oop pattern (see compiledIC.hpp, etc)
485 486 static void* non_oop_word();
486 487
487 488 // Oop verification (see MacroAssembler::verify_oop)
488 489 static uintptr_t verify_oop_mask() PRODUCT_RETURN0;
489 490 static uintptr_t verify_oop_bits() PRODUCT_RETURN0;
490 491 static uintptr_t verify_mark_bits() PRODUCT_RETURN0;
491 492 static uintptr_t verify_mark_mask() PRODUCT_RETURN0;
492 493
493 494 // Compiler support
494 495 static int base_vtable_size() { return _base_vtable_size; }
495 496 };
496 497
497 498 class DeferredObjAllocEvent : public CHeapObj<mtInternal> {
498 499 private:
499 500 oop _oop;
500 501 size_t _bytesize;
501 502 jint _arena_id;
502 503
503 504 public:
504 505 DeferredObjAllocEvent(const oop o, const size_t s, const jint id) {
505 506 _oop = o;
506 507 _bytesize = s;
507 508 _arena_id = id;
508 509 }
509 510
510 511 ~DeferredObjAllocEvent() {
511 512 }
512 513
513 514 jint arena_id() { return _arena_id; }
514 515 size_t bytesize() { return _bytesize; }
515 516 oop get_oop() { return _oop; }
516 517 };
517 518
518 519 #endif // SHARE_VM_MEMORY_UNIVERSE_HPP
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