Wed, 28 Nov 2012 17:50:21 -0500
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
Summary: Make metaspace::contains be lock free and used to see if something is in metaspace, also compare Method* with vtbl pointer.
Reviewed-by: dholmes, sspitsyn, dcubed, jmasa
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_MEMORY_ALLOCATION_HPP
26 #define SHARE_VM_MEMORY_ALLOCATION_HPP
28 #include "runtime/globals.hpp"
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/macros.hpp"
31 #ifdef COMPILER1
32 #include "c1/c1_globals.hpp"
33 #endif
34 #ifdef COMPILER2
35 #include "opto/c2_globals.hpp"
36 #endif
38 #include <new>
40 #define ARENA_ALIGN_M1 (((size_t)(ARENA_AMALLOC_ALIGNMENT)) - 1)
41 #define ARENA_ALIGN_MASK (~((size_t)ARENA_ALIGN_M1))
42 #define ARENA_ALIGN(x) ((((size_t)(x)) + ARENA_ALIGN_M1) & ARENA_ALIGN_MASK)
45 // noinline attribute
46 #ifdef _WINDOWS
47 #define _NOINLINE_ __declspec(noinline)
48 #else
49 #if __GNUC__ < 3 // gcc 2.x does not support noinline attribute
50 #define _NOINLINE_
51 #else
52 #define _NOINLINE_ __attribute__ ((noinline))
53 #endif
54 #endif
56 class AllocFailStrategy {
57 public:
58 enum AllocFailEnum { EXIT_OOM, RETURN_NULL };
59 };
60 typedef AllocFailStrategy::AllocFailEnum AllocFailType;
62 // All classes in the virtual machine must be subclassed
63 // by one of the following allocation classes:
64 //
65 // For objects allocated in the resource area (see resourceArea.hpp).
66 // - ResourceObj
67 //
68 // For objects allocated in the C-heap (managed by: free & malloc).
69 // - CHeapObj
70 //
71 // For objects allocated on the stack.
72 // - StackObj
73 //
74 // For embedded objects.
75 // - ValueObj
76 //
77 // For classes used as name spaces.
78 // - AllStatic
79 //
80 // For classes in Metaspace (class data)
81 // - MetaspaceObj
82 //
83 // The printable subclasses are used for debugging and define virtual
84 // member functions for printing. Classes that avoid allocating the
85 // vtbl entries in the objects should therefore not be the printable
86 // subclasses.
87 //
88 // The following macros and function should be used to allocate memory
89 // directly in the resource area or in the C-heap:
90 //
91 // NEW_RESOURCE_ARRAY(type,size)
92 // NEW_RESOURCE_OBJ(type)
93 // NEW_C_HEAP_ARRAY(type,size)
94 // NEW_C_HEAP_OBJ(type)
95 // char* AllocateHeap(size_t size, const char* name);
96 // void FreeHeap(void* p);
97 //
98 // C-heap allocation can be traced using +PrintHeapAllocation.
99 // malloc and free should therefore never called directly.
101 // Base class for objects allocated in the C-heap.
103 // In non product mode we introduce a super class for all allocation classes
104 // that supports printing.
105 // We avoid the superclass in product mode since some C++ compilers add
106 // a word overhead for empty super classes.
108 #ifdef PRODUCT
109 #define ALLOCATION_SUPER_CLASS_SPEC
110 #else
111 #define ALLOCATION_SUPER_CLASS_SPEC : public AllocatedObj
112 class AllocatedObj {
113 public:
114 // Printing support
115 void print() const;
116 void print_value() const;
118 virtual void print_on(outputStream* st) const;
119 virtual void print_value_on(outputStream* st) const;
120 };
121 #endif
124 /*
125 * MemoryType bitmap layout:
126 * | 16 15 14 13 12 11 10 09 | 08 07 06 05 | 04 03 02 01 |
127 * | memory type | object | reserved |
128 * | | type | |
129 */
130 enum MemoryType {
131 // Memory type by sub systems. It occupies lower byte.
132 mtNone = 0x0000, // undefined
133 mtClass = 0x0100, // memory class for Java classes
134 mtThread = 0x0200, // memory for thread objects
135 mtThreadStack = 0x0300,
136 mtCode = 0x0400, // memory for generated code
137 mtGC = 0x0500, // memory for GC
138 mtCompiler = 0x0600, // memory for compiler
139 mtInternal = 0x0700, // memory used by VM, but does not belong to
140 // any of above categories, and not used for
141 // native memory tracking
142 mtOther = 0x0800, // memory not used by VM
143 mtSymbol = 0x0900, // symbol
144 mtNMT = 0x0A00, // memory used by native memory tracking
145 mtChunk = 0x0B00, // chunk that holds content of arenas
146 mtJavaHeap = 0x0C00, // Java heap
147 mtClassShared = 0x0D00, // class data sharing
148 mt_number_of_types = 0x000D, // number of memory types (mtDontTrack
149 // is not included as validate type)
150 mtDontTrack = 0x0E00, // memory we do not or cannot track
151 mt_masks = 0x7F00,
153 // object type mask
154 otArena = 0x0010, // an arena object
155 otNMTRecorder = 0x0020, // memory recorder object
156 ot_masks = 0x00F0
157 };
159 #define IS_MEMORY_TYPE(flags, type) ((flags & mt_masks) == type)
160 #define HAS_VALID_MEMORY_TYPE(flags)((flags & mt_masks) != mtNone)
161 #define FLAGS_TO_MEMORY_TYPE(flags) (flags & mt_masks)
163 #define IS_ARENA_OBJ(flags) ((flags & ot_masks) == otArena)
164 #define IS_NMT_RECORDER(flags) ((flags & ot_masks) == otNMTRecorder)
165 #define NMT_CAN_TRACK(flags) (!IS_NMT_RECORDER(flags) && !(IS_MEMORY_TYPE(flags, mtDontTrack)))
167 typedef unsigned short MEMFLAGS;
169 #if INCLUDE_NMT
171 extern bool NMT_track_callsite;
173 #else
175 const bool NMT_track_callsite = false;
177 #endif // INCLUDE_NMT
179 // debug build does not inline
180 #if defined(_DEBUG_)
181 #define CURRENT_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0)
182 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0)
183 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(3) : 0)
184 #else
185 #define CURRENT_PC (NMT_track_callsite? os::get_caller_pc(0) : 0)
186 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0)
187 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0)
188 #endif
192 template <MEMFLAGS F> class CHeapObj ALLOCATION_SUPER_CLASS_SPEC {
193 public:
194 _NOINLINE_ void* operator new(size_t size, address caller_pc = 0);
195 _NOINLINE_ void* operator new (size_t size, const std::nothrow_t& nothrow_constant,
196 address caller_pc = 0);
198 void operator delete(void* p);
199 };
201 // Base class for objects allocated on the stack only.
202 // Calling new or delete will result in fatal error.
204 class StackObj ALLOCATION_SUPER_CLASS_SPEC {
205 public:
206 void* operator new(size_t size);
207 void operator delete(void* p);
208 };
210 // Base class for objects used as value objects.
211 // Calling new or delete will result in fatal error.
212 //
213 // Portability note: Certain compilers (e.g. gcc) will
214 // always make classes bigger if it has a superclass, even
215 // if the superclass does not have any virtual methods or
216 // instance fields. The HotSpot implementation relies on this
217 // not to happen. So never make a ValueObj class a direct subclass
218 // of this object, but use the VALUE_OBJ_CLASS_SPEC class instead, e.g.,
219 // like this:
220 //
221 // class A VALUE_OBJ_CLASS_SPEC {
222 // ...
223 // }
224 //
225 // With gcc and possible other compilers the VALUE_OBJ_CLASS_SPEC can
226 // be defined as a an empty string "".
227 //
228 class _ValueObj {
229 public:
230 void* operator new(size_t size);
231 void operator delete(void* p);
232 };
235 // Base class for objects stored in Metaspace.
236 // Calling delete will result in fatal error.
237 //
238 // Do not inherit from something with a vptr because this class does
239 // not introduce one. This class is used to allocate both shared read-only
240 // and shared read-write classes.
241 //
243 class ClassLoaderData;
245 class MetaspaceObj {
246 public:
247 bool is_metadata() const;
248 bool is_metaspace_object() const; // more specific test but slower
249 bool is_shared() const;
250 void print_address_on(outputStream* st) const; // nonvirtual address printing
252 void* operator new(size_t size, ClassLoaderData* loader_data,
253 size_t word_size, bool read_only, Thread* thread);
254 // can't use TRAPS from this header file.
255 void operator delete(void* p) { ShouldNotCallThis(); }
256 };
258 // Base class for classes that constitute name spaces.
260 class AllStatic {
261 public:
262 AllStatic() { ShouldNotCallThis(); }
263 ~AllStatic() { ShouldNotCallThis(); }
264 };
267 //------------------------------Chunk------------------------------------------
268 // Linked list of raw memory chunks
269 class Chunk: CHeapObj<mtChunk> {
270 friend class VMStructs;
272 protected:
273 Chunk* _next; // Next Chunk in list
274 const size_t _len; // Size of this Chunk
275 public:
276 void* operator new(size_t size, size_t length);
277 void operator delete(void* p);
278 Chunk(size_t length);
280 enum {
281 // default sizes; make them slightly smaller than 2**k to guard against
282 // buddy-system style malloc implementations
283 #ifdef _LP64
284 slack = 40, // [RGV] Not sure if this is right, but make it
285 // a multiple of 8.
286 #else
287 slack = 20, // suspected sizeof(Chunk) + internal malloc headers
288 #endif
290 init_size = 1*K - slack, // Size of first chunk
291 medium_size= 10*K - slack, // Size of medium-sized chunk
292 size = 32*K - slack, // Default size of an Arena chunk (following the first)
293 non_pool_size = init_size + 32 // An initial size which is not one of above
294 };
296 void chop(); // Chop this chunk
297 void next_chop(); // Chop next chunk
298 static size_t aligned_overhead_size(void) { return ARENA_ALIGN(sizeof(Chunk)); }
299 static size_t aligned_overhead_size(size_t byte_size) { return ARENA_ALIGN(byte_size); }
301 size_t length() const { return _len; }
302 Chunk* next() const { return _next; }
303 void set_next(Chunk* n) { _next = n; }
304 // Boundaries of data area (possibly unused)
305 char* bottom() const { return ((char*) this) + aligned_overhead_size(); }
306 char* top() const { return bottom() + _len; }
307 bool contains(char* p) const { return bottom() <= p && p <= top(); }
309 // Start the chunk_pool cleaner task
310 static void start_chunk_pool_cleaner_task();
312 static void clean_chunk_pool();
313 };
315 //------------------------------Arena------------------------------------------
316 // Fast allocation of memory
317 class Arena : public CHeapObj<mtNone|otArena> {
318 protected:
319 friend class ResourceMark;
320 friend class HandleMark;
321 friend class NoHandleMark;
322 friend class VMStructs;
324 Chunk *_first; // First chunk
325 Chunk *_chunk; // current chunk
326 char *_hwm, *_max; // High water mark and max in current chunk
327 // Get a new Chunk of at least size x
328 void* grow(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM);
329 size_t _size_in_bytes; // Size of arena (used for native memory tracking)
331 NOT_PRODUCT(static julong _bytes_allocated;) // total #bytes allocated since start
332 friend class AllocStats;
333 debug_only(void* malloc(size_t size);)
334 debug_only(void* internal_malloc_4(size_t x);)
335 NOT_PRODUCT(void inc_bytes_allocated(size_t x);)
337 void signal_out_of_memory(size_t request, const char* whence) const;
339 void check_for_overflow(size_t request, const char* whence) const {
340 if (UINTPTR_MAX - request < (uintptr_t)_hwm) {
341 signal_out_of_memory(request, whence);
342 }
343 }
345 public:
346 Arena();
347 Arena(size_t init_size);
348 ~Arena();
349 void destruct_contents();
350 char* hwm() const { return _hwm; }
352 // new operators
353 void* operator new (size_t size);
354 void* operator new (size_t size, const std::nothrow_t& nothrow_constant);
356 // dynamic memory type tagging
357 void* operator new(size_t size, MEMFLAGS flags);
358 void* operator new(size_t size, const std::nothrow_t& nothrow_constant, MEMFLAGS flags);
359 void operator delete(void* p);
361 // Fast allocate in the arena. Common case is: pointer test + increment.
362 void* Amalloc(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
363 assert(is_power_of_2(ARENA_AMALLOC_ALIGNMENT) , "should be a power of 2");
364 x = ARENA_ALIGN(x);
365 debug_only(if (UseMallocOnly) return malloc(x);)
366 check_for_overflow(x, "Arena::Amalloc");
367 NOT_PRODUCT(inc_bytes_allocated(x);)
368 if (_hwm + x > _max) {
369 return grow(x, alloc_failmode);
370 } else {
371 char *old = _hwm;
372 _hwm += x;
373 return old;
374 }
375 }
376 // Further assume size is padded out to words
377 void *Amalloc_4(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
378 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" );
379 debug_only(if (UseMallocOnly) return malloc(x);)
380 check_for_overflow(x, "Arena::Amalloc_4");
381 NOT_PRODUCT(inc_bytes_allocated(x);)
382 if (_hwm + x > _max) {
383 return grow(x, alloc_failmode);
384 } else {
385 char *old = _hwm;
386 _hwm += x;
387 return old;
388 }
389 }
391 // Allocate with 'double' alignment. It is 8 bytes on sparc.
392 // In other cases Amalloc_D() should be the same as Amalloc_4().
393 void* Amalloc_D(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
394 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" );
395 debug_only(if (UseMallocOnly) return malloc(x);)
396 #if defined(SPARC) && !defined(_LP64)
397 #define DALIGN_M1 7
398 size_t delta = (((size_t)_hwm + DALIGN_M1) & ~DALIGN_M1) - (size_t)_hwm;
399 x += delta;
400 #endif
401 check_for_overflow(x, "Arena::Amalloc_D");
402 NOT_PRODUCT(inc_bytes_allocated(x);)
403 if (_hwm + x > _max) {
404 return grow(x, alloc_failmode); // grow() returns a result aligned >= 8 bytes.
405 } else {
406 char *old = _hwm;
407 _hwm += x;
408 #if defined(SPARC) && !defined(_LP64)
409 old += delta; // align to 8-bytes
410 #endif
411 return old;
412 }
413 }
415 // Fast delete in area. Common case is: NOP (except for storage reclaimed)
416 void Afree(void *ptr, size_t size) {
417 #ifdef ASSERT
418 if (ZapResourceArea) memset(ptr, badResourceValue, size); // zap freed memory
419 if (UseMallocOnly) return;
420 #endif
421 if (((char*)ptr) + size == _hwm) _hwm = (char*)ptr;
422 }
424 void *Arealloc( void *old_ptr, size_t old_size, size_t new_size,
425 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM);
427 // Move contents of this arena into an empty arena
428 Arena *move_contents(Arena *empty_arena);
430 // Determine if pointer belongs to this Arena or not.
431 bool contains( const void *ptr ) const;
433 // Total of all chunks in use (not thread-safe)
434 size_t used() const;
436 // Total # of bytes used
437 size_t size_in_bytes() const { return _size_in_bytes; };
438 void set_size_in_bytes(size_t size);
440 static void free_malloced_objects(Chunk* chunk, char* hwm, char* max, char* hwm2) PRODUCT_RETURN;
441 static void free_all(char** start, char** end) PRODUCT_RETURN;
443 // how many arena instances
444 NOT_PRODUCT(static volatile jint _instance_count;)
445 private:
446 // Reset this Arena to empty, access will trigger grow if necessary
447 void reset(void) {
448 _first = _chunk = NULL;
449 _hwm = _max = NULL;
450 set_size_in_bytes(0);
451 }
452 };
454 // One of the following macros must be used when allocating
455 // an array or object from an arena
456 #define NEW_ARENA_ARRAY(arena, type, size) \
457 (type*) (arena)->Amalloc((size) * sizeof(type))
459 #define REALLOC_ARENA_ARRAY(arena, type, old, old_size, new_size) \
460 (type*) (arena)->Arealloc((char*)(old), (old_size) * sizeof(type), \
461 (new_size) * sizeof(type) )
463 #define FREE_ARENA_ARRAY(arena, type, old, size) \
464 (arena)->Afree((char*)(old), (size) * sizeof(type))
466 #define NEW_ARENA_OBJ(arena, type) \
467 NEW_ARENA_ARRAY(arena, type, 1)
470 //%note allocation_1
471 extern char* resource_allocate_bytes(size_t size,
472 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM);
473 extern char* resource_allocate_bytes(Thread* thread, size_t size,
474 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM);
475 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size,
476 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM);
477 extern void resource_free_bytes( char *old, size_t size );
479 //----------------------------------------------------------------------
480 // Base class for objects allocated in the resource area per default.
481 // Optionally, objects may be allocated on the C heap with
482 // new(ResourceObj::C_HEAP) Foo(...) or in an Arena with new (&arena)
483 // ResourceObj's can be allocated within other objects, but don't use
484 // new or delete (allocation_type is unknown). If new is used to allocate,
485 // use delete to deallocate.
486 class ResourceObj ALLOCATION_SUPER_CLASS_SPEC {
487 public:
488 enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 };
489 static void set_allocation_type(address res, allocation_type type) NOT_DEBUG_RETURN;
490 #ifdef ASSERT
491 private:
492 // When this object is allocated on stack the new() operator is not
493 // called but garbage on stack may look like a valid allocation_type.
494 // Store negated 'this' pointer when new() is called to distinguish cases.
495 // Use second array's element for verification value to distinguish garbage.
496 uintptr_t _allocation_t[2];
497 bool is_type_set() const;
498 public:
499 allocation_type get_allocation_type() const;
500 bool allocated_on_stack() const { return get_allocation_type() == STACK_OR_EMBEDDED; }
501 bool allocated_on_res_area() const { return get_allocation_type() == RESOURCE_AREA; }
502 bool allocated_on_C_heap() const { return get_allocation_type() == C_HEAP; }
503 bool allocated_on_arena() const { return get_allocation_type() == ARENA; }
504 ResourceObj(); // default construtor
505 ResourceObj(const ResourceObj& r); // default copy construtor
506 ResourceObj& operator=(const ResourceObj& r); // default copy assignment
507 ~ResourceObj();
508 #endif // ASSERT
510 public:
511 void* operator new(size_t size, allocation_type type, MEMFLAGS flags);
512 void* operator new(size_t size, const std::nothrow_t& nothrow_constant,
513 allocation_type type, MEMFLAGS flags);
514 void* operator new(size_t size, Arena *arena) {
515 address res = (address)arena->Amalloc(size);
516 DEBUG_ONLY(set_allocation_type(res, ARENA);)
517 return res;
518 }
519 void* operator new(size_t size) {
520 address res = (address)resource_allocate_bytes(size);
521 DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);)
522 return res;
523 }
525 void* operator new(size_t size, const std::nothrow_t& nothrow_constant) {
526 address res = (address)resource_allocate_bytes(size, AllocFailStrategy::RETURN_NULL);
527 DEBUG_ONLY(if (res != NULL) set_allocation_type(res, RESOURCE_AREA);)
528 return res;
529 }
531 void operator delete(void* p);
532 };
534 // One of the following macros must be used when allocating an array
535 // or object to determine whether it should reside in the C heap on in
536 // the resource area.
538 #define NEW_RESOURCE_ARRAY(type, size)\
539 (type*) resource_allocate_bytes((size) * sizeof(type))
541 #define NEW_RESOURCE_ARRAY_IN_THREAD(thread, type, size)\
542 (type*) resource_allocate_bytes(thread, (size) * sizeof(type))
544 #define REALLOC_RESOURCE_ARRAY(type, old, old_size, new_size)\
545 (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type), (new_size) * sizeof(type) )
547 #define FREE_RESOURCE_ARRAY(type, old, size)\
548 resource_free_bytes((char*)(old), (size) * sizeof(type))
550 #define FREE_FAST(old)\
551 /* nop */
553 #define NEW_RESOURCE_OBJ(type)\
554 NEW_RESOURCE_ARRAY(type, 1)
556 #define NEW_C_HEAP_ARRAY(type, size, memflags)\
557 (type*) (AllocateHeap((size) * sizeof(type), memflags))
559 #define REALLOC_C_HEAP_ARRAY(type, old, size, memflags)\
560 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags))
562 #define FREE_C_HEAP_ARRAY(type,old,memflags) \
563 FreeHeap((char*)(old), memflags)
565 #define NEW_C_HEAP_OBJ(type, memflags)\
566 NEW_C_HEAP_ARRAY(type, 1, memflags)
569 #define NEW_C_HEAP_ARRAY2(type, size, memflags, pc)\
570 (type*) (AllocateHeap((size) * sizeof(type), memflags, pc))
572 #define REALLOC_C_HEAP_ARRAY2(type, old, size, memflags, pc)\
573 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags, pc))
575 #define NEW_C_HEAP_OBJ2(type, memflags, pc)\
576 NEW_C_HEAP_ARRAY2(type, 1, memflags, pc)
579 extern bool warn_new_operator;
581 // for statistics
582 #ifndef PRODUCT
583 class AllocStats : StackObj {
584 julong start_mallocs, start_frees;
585 julong start_malloc_bytes, start_mfree_bytes, start_res_bytes;
586 public:
587 AllocStats();
589 julong num_mallocs(); // since creation of receiver
590 julong alloc_bytes();
591 julong num_frees();
592 julong free_bytes();
593 julong resource_bytes();
594 void print();
595 };
596 #endif
599 //------------------------------ReallocMark---------------------------------
600 // Code which uses REALLOC_RESOURCE_ARRAY should check an associated
601 // ReallocMark, which is declared in the same scope as the reallocated
602 // pointer. Any operation that could __potentially__ cause a reallocation
603 // should check the ReallocMark.
604 class ReallocMark: public StackObj {
605 protected:
606 NOT_PRODUCT(int _nesting;)
608 public:
609 ReallocMark() PRODUCT_RETURN;
610 void check() PRODUCT_RETURN;
611 };
613 #endif // SHARE_VM_MEMORY_ALLOCATION_HPP