Mercurial > hg > graal-compiler
annotate src/share/vm/memory/allocation.hpp @ 10135:5a9fa2ba85f0
8012907: anti-delta fix for 8010992
Summary: anti-delta fix for 8010992 until 8012902 can be fixed
Reviewed-by: acorn, minqi, rdurbin
| author | dcubed |
|---|---|
| date | Sun, 21 Apr 2013 20:41:04 -0700 |
| parents | 6f817ce50129 |
| children | cc12becb22e7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10135 | 2 * Copyright (c) 1997, 2012, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
342
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
342
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
342
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_MEMORY_ALLOCATION_HPP |
| 26 #define SHARE_VM_MEMORY_ALLOCATION_HPP | |
| 27 | |
| 28 #include "runtime/globals.hpp" | |
| 29 #include "utilities/globalDefinitions.hpp" | |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
30 #include "utilities/macros.hpp" |
| 1972 | 31 #ifdef COMPILER1 |
| 32 #include "c1/c1_globals.hpp" | |
| 33 #endif | |
| 34 #ifdef COMPILER2 | |
| 35 #include "opto/c2_globals.hpp" | |
| 36 #endif | |
| 37 | |
|
3302
2a3da7eaf4a6
7036747: 7017009 reappeared, problem with ElfStringTable
zgu
parents:
2307
diff
changeset
|
38 #include <new> |
|
2a3da7eaf4a6
7036747: 7017009 reappeared, problem with ElfStringTable
zgu
parents:
2307
diff
changeset
|
39 |
| 0 | 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) | |
| 43 | |
| 6197 | 44 |
| 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 | |
| 55 | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
56 class AllocFailStrategy { |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
57 public: |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
58 enum AllocFailEnum { EXIT_OOM, RETURN_NULL }; |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
59 }; |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
60 typedef AllocFailStrategy::AllocFailEnum AllocFailType; |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
61 |
| 0 | 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 // | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
80 // For classes in Metaspace (class data) |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
81 // - MetaspaceObj |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
82 // |
| 0 | 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 | |
| 10135 | 89 // directly in the resource area or in the C-heap: |
| 0 | 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. | |
| 100 | |
| 101 // Base class for objects allocated in the C-heap. | |
| 102 | |
| 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. | |
| 107 | |
| 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; | |
| 117 | |
| 118 virtual void print_on(outputStream* st) const; | |
| 119 virtual void print_value_on(outputStream* st) const; | |
| 120 }; | |
| 121 #endif | |
| 122 | |
| 6197 | 123 |
| 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 | |
|
6882
716c64bda5ba
7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents:
6872
diff
changeset
|
147 mtClassShared = 0x0D00, // class data sharing |
|
7971
4102b59539ce
8005012: Add WB APIs to better support NMT testing
ctornqvi
parents:
7434
diff
changeset
|
148 mtTest = 0x0E00, // Test type for verifying NMT |
|
4102b59539ce
8005012: Add WB APIs to better support NMT testing
ctornqvi
parents:
7434
diff
changeset
|
149 mt_number_of_types = 0x000E, // number of memory types (mtDontTrack |
|
6882
716c64bda5ba
7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents:
6872
diff
changeset
|
150 // is not included as validate type) |
|
7971
4102b59539ce
8005012: Add WB APIs to better support NMT testing
ctornqvi
parents:
7434
diff
changeset
|
151 mtDontTrack = 0x0F00, // memory we do not or cannot track |
| 6197 | 152 mt_masks = 0x7F00, |
| 153 | |
| 154 // object type mask | |
| 155 otArena = 0x0010, // an arena object | |
| 156 otNMTRecorder = 0x0020, // memory recorder object | |
| 157 ot_masks = 0x00F0 | |
| 158 }; | |
| 159 | |
| 160 #define IS_MEMORY_TYPE(flags, type) ((flags & mt_masks) == type) | |
| 161 #define HAS_VALID_MEMORY_TYPE(flags)((flags & mt_masks) != mtNone) | |
| 162 #define FLAGS_TO_MEMORY_TYPE(flags) (flags & mt_masks) | |
| 163 | |
| 164 #define IS_ARENA_OBJ(flags) ((flags & ot_masks) == otArena) | |
| 165 #define IS_NMT_RECORDER(flags) ((flags & ot_masks) == otNMTRecorder) | |
| 166 #define NMT_CAN_TRACK(flags) (!IS_NMT_RECORDER(flags) && !(IS_MEMORY_TYPE(flags, mtDontTrack))) | |
| 167 | |
| 168 typedef unsigned short MEMFLAGS; | |
| 169 | |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
170 #if INCLUDE_NMT |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
171 |
| 6197 | 172 extern bool NMT_track_callsite; |
| 173 | |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
174 #else |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
175 |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
176 const bool NMT_track_callsite = false; |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
177 |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
178 #endif // INCLUDE_NMT |
|
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
179 |
| 6197 | 180 // debug build does not inline |
| 181 #if defined(_DEBUG_) | |
| 182 #define CURRENT_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0) | |
| 183 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) | |
| 184 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(3) : 0) | |
| 185 #else | |
| 186 #define CURRENT_PC (NMT_track_callsite? os::get_caller_pc(0) : 0) | |
| 187 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0) | |
| 188 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) | |
| 189 #endif | |
| 190 | |
| 191 | |
| 192 | |
| 193 template <MEMFLAGS F> class CHeapObj ALLOCATION_SUPER_CLASS_SPEC { | |
| 0 | 194 public: |
| 6197 | 195 _NOINLINE_ void* operator new(size_t size, address caller_pc = 0); |
| 196 _NOINLINE_ void* operator new (size_t size, const std::nothrow_t& nothrow_constant, | |
| 197 address caller_pc = 0); | |
| 10135 | 198 |
| 0 | 199 void operator delete(void* p); |
| 200 }; | |
| 201 | |
| 202 // Base class for objects allocated on the stack only. | |
| 203 // Calling new or delete will result in fatal error. | |
| 204 | |
| 205 class StackObj ALLOCATION_SUPER_CLASS_SPEC { | |
|
7434
32164d89fe9c
8004845: Catch incorrect usage of new and delete during compile time for value objects and stack objects
brutisso
parents:
7176
diff
changeset
|
206 private: |
| 0 | 207 void* operator new(size_t size); |
| 208 void operator delete(void* p); | |
| 209 }; | |
| 210 | |
| 211 // Base class for objects used as value objects. | |
| 212 // Calling new or delete will result in fatal error. | |
| 213 // | |
| 214 // Portability note: Certain compilers (e.g. gcc) will | |
| 215 // always make classes bigger if it has a superclass, even | |
| 216 // if the superclass does not have any virtual methods or | |
| 217 // instance fields. The HotSpot implementation relies on this | |
| 218 // not to happen. So never make a ValueObj class a direct subclass | |
| 219 // of this object, but use the VALUE_OBJ_CLASS_SPEC class instead, e.g., | |
| 220 // like this: | |
| 221 // | |
| 222 // class A VALUE_OBJ_CLASS_SPEC { | |
| 223 // ... | |
| 224 // } | |
| 225 // | |
| 226 // With gcc and possible other compilers the VALUE_OBJ_CLASS_SPEC can | |
| 227 // be defined as a an empty string "". | |
| 228 // | |
| 229 class _ValueObj { | |
|
7434
32164d89fe9c
8004845: Catch incorrect usage of new and delete during compile time for value objects and stack objects
brutisso
parents:
7176
diff
changeset
|
230 private: |
| 0 | 231 void* operator new(size_t size); |
| 10135 | 232 void operator delete(void* p); |
| 0 | 233 }; |
| 234 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
235 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
236 // Base class for objects stored in Metaspace. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
237 // Calling delete will result in fatal error. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
238 // |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
239 // Do not inherit from something with a vptr because this class does |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
240 // not introduce one. This class is used to allocate both shared read-only |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
241 // and shared read-write classes. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
242 // |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
243 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
244 class ClassLoaderData; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
245 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
246 class MetaspaceObj { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
247 public: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
248 bool is_metadata() const; |
|
7176
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6882
diff
changeset
|
249 bool is_metaspace_object() const; // more specific test but slower |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
250 bool is_shared() const; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
251 void print_address_on(outputStream* st) const; // nonvirtual address printing |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
252 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
253 void* operator new(size_t size, ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
254 size_t word_size, bool read_only, Thread* thread); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
255 // can't use TRAPS from this header file. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
256 void operator delete(void* p) { ShouldNotCallThis(); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
257 }; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
258 |
| 0 | 259 // Base class for classes that constitute name spaces. |
| 260 | |
| 261 class AllStatic { | |
| 262 public: | |
| 263 AllStatic() { ShouldNotCallThis(); } | |
| 264 ~AllStatic() { ShouldNotCallThis(); } | |
| 265 }; | |
| 266 | |
| 267 | |
| 268 //------------------------------Chunk------------------------------------------ | |
| 269 // Linked list of raw memory chunks | |
| 6197 | 270 class Chunk: CHeapObj<mtChunk> { |
| 3939 | 271 friend class VMStructs; |
| 272 | |
| 0 | 273 protected: |
| 274 Chunk* _next; // Next Chunk in list | |
| 275 const size_t _len; // Size of this Chunk | |
| 276 public: | |
| 277 void* operator new(size_t size, size_t length); | |
| 278 void operator delete(void* p); | |
| 279 Chunk(size_t length); | |
| 280 | |
| 281 enum { | |
| 282 // default sizes; make them slightly smaller than 2**k to guard against | |
| 283 // buddy-system style malloc implementations | |
| 284 #ifdef _LP64 | |
| 285 slack = 40, // [RGV] Not sure if this is right, but make it | |
| 286 // a multiple of 8. | |
| 287 #else | |
| 288 slack = 20, // suspected sizeof(Chunk) + internal malloc headers | |
| 289 #endif | |
| 290 | |
| 291 init_size = 1*K - slack, // Size of first chunk | |
| 292 medium_size= 10*K - slack, // Size of medium-sized chunk | |
| 293 size = 32*K - slack, // Default size of an Arena chunk (following the first) | |
| 294 non_pool_size = init_size + 32 // An initial size which is not one of above | |
| 295 }; | |
| 296 | |
| 297 void chop(); // Chop this chunk | |
| 298 void next_chop(); // Chop next chunk | |
| 299 static size_t aligned_overhead_size(void) { return ARENA_ALIGN(sizeof(Chunk)); } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
300 static size_t aligned_overhead_size(size_t byte_size) { return ARENA_ALIGN(byte_size); } |
| 0 | 301 |
| 302 size_t length() const { return _len; } | |
| 303 Chunk* next() const { return _next; } | |
| 304 void set_next(Chunk* n) { _next = n; } | |
| 305 // Boundaries of data area (possibly unused) | |
| 306 char* bottom() const { return ((char*) this) + aligned_overhead_size(); } | |
| 307 char* top() const { return bottom() + _len; } | |
| 308 bool contains(char* p) const { return bottom() <= p && p <= top(); } | |
| 309 | |
| 310 // Start the chunk_pool cleaner task | |
| 311 static void start_chunk_pool_cleaner_task(); | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
312 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
313 static void clean_chunk_pool(); |
| 0 | 314 }; |
| 315 | |
| 316 //------------------------------Arena------------------------------------------ | |
| 317 // Fast allocation of memory | |
| 6197 | 318 class Arena : public CHeapObj<mtNone|otArena> { |
| 0 | 319 protected: |
| 320 friend class ResourceMark; | |
| 321 friend class HandleMark; | |
| 322 friend class NoHandleMark; | |
| 3939 | 323 friend class VMStructs; |
| 324 | |
| 0 | 325 Chunk *_first; // First chunk |
| 326 Chunk *_chunk; // current chunk | |
| 327 char *_hwm, *_max; // High water mark and max in current chunk | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
328 // Get a new Chunk of at least size x |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
329 void* grow(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
| 6197 | 330 size_t _size_in_bytes; // Size of arena (used for native memory tracking) |
| 331 | |
| 2250 | 332 NOT_PRODUCT(static julong _bytes_allocated;) // total #bytes allocated since start |
| 0 | 333 friend class AllocStats; |
| 334 debug_only(void* malloc(size_t size);) | |
| 335 debug_only(void* internal_malloc_4(size_t x);) | |
| 2250 | 336 NOT_PRODUCT(void inc_bytes_allocated(size_t x);) |
|
2307
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
337 |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
338 void signal_out_of_memory(size_t request, const char* whence) const; |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
339 |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
340 void check_for_overflow(size_t request, const char* whence) const { |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
341 if (UINTPTR_MAX - request < (uintptr_t)_hwm) { |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
342 signal_out_of_memory(request, whence); |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
343 } |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
344 } |
|
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
345 |
| 0 | 346 public: |
| 347 Arena(); | |
| 348 Arena(size_t init_size); | |
| 349 ~Arena(); | |
| 350 void destruct_contents(); | |
| 351 char* hwm() const { return _hwm; } | |
| 352 | |
| 6197 | 353 // new operators |
| 354 void* operator new (size_t size); | |
| 355 void* operator new (size_t size, const std::nothrow_t& nothrow_constant); | |
| 356 | |
| 357 // dynamic memory type tagging | |
| 358 void* operator new(size_t size, MEMFLAGS flags); | |
| 359 void* operator new(size_t size, const std::nothrow_t& nothrow_constant, MEMFLAGS flags); | |
| 360 void operator delete(void* p); | |
| 361 | |
| 0 | 362 // Fast allocate in the arena. Common case is: pointer test + increment. |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
363 void* Amalloc(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
| 0 | 364 assert(is_power_of_2(ARENA_AMALLOC_ALIGNMENT) , "should be a power of 2"); |
| 365 x = ARENA_ALIGN(x); | |
| 366 debug_only(if (UseMallocOnly) return malloc(x);) | |
|
2307
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
367 check_for_overflow(x, "Arena::Amalloc"); |
| 2250 | 368 NOT_PRODUCT(inc_bytes_allocated(x);) |
| 0 | 369 if (_hwm + x > _max) { |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
370 return grow(x, alloc_failmode); |
| 0 | 371 } else { |
| 372 char *old = _hwm; | |
| 373 _hwm += x; | |
| 374 return old; | |
| 375 } | |
| 376 } | |
| 377 // Further assume size is padded out to words | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
378 void *Amalloc_4(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
| 0 | 379 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); |
| 380 debug_only(if (UseMallocOnly) return malloc(x);) | |
|
2307
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
381 check_for_overflow(x, "Arena::Amalloc_4"); |
| 2250 | 382 NOT_PRODUCT(inc_bytes_allocated(x);) |
| 0 | 383 if (_hwm + x > _max) { |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
384 return grow(x, alloc_failmode); |
| 0 | 385 } else { |
| 386 char *old = _hwm; | |
| 387 _hwm += x; | |
| 388 return old; | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 // Allocate with 'double' alignment. It is 8 bytes on sparc. | |
| 393 // In other cases Amalloc_D() should be the same as Amalloc_4(). | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
394 void* Amalloc_D(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
| 0 | 395 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); |
| 396 debug_only(if (UseMallocOnly) return malloc(x);) | |
| 397 #if defined(SPARC) && !defined(_LP64) | |
| 398 #define DALIGN_M1 7 | |
| 399 size_t delta = (((size_t)_hwm + DALIGN_M1) & ~DALIGN_M1) - (size_t)_hwm; | |
| 400 x += delta; | |
| 401 #endif | |
|
2307
4a9604cd7c5f
6878713: Verifier heap corruption, relating to backward jsrs
kamg
parents:
2250
diff
changeset
|
402 check_for_overflow(x, "Arena::Amalloc_D"); |
| 2250 | 403 NOT_PRODUCT(inc_bytes_allocated(x);) |
| 0 | 404 if (_hwm + x > _max) { |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
405 return grow(x, alloc_failmode); // grow() returns a result aligned >= 8 bytes. |
| 0 | 406 } else { |
| 407 char *old = _hwm; | |
| 408 _hwm += x; | |
| 409 #if defined(SPARC) && !defined(_LP64) | |
| 410 old += delta; // align to 8-bytes | |
| 411 #endif | |
| 412 return old; | |
| 413 } | |
| 414 } | |
| 415 | |
| 416 // Fast delete in area. Common case is: NOP (except for storage reclaimed) | |
| 417 void Afree(void *ptr, size_t size) { | |
| 418 #ifdef ASSERT | |
| 419 if (ZapResourceArea) memset(ptr, badResourceValue, size); // zap freed memory | |
| 420 if (UseMallocOnly) return; | |
| 421 #endif | |
| 422 if (((char*)ptr) + size == _hwm) _hwm = (char*)ptr; | |
| 423 } | |
| 424 | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
425 void *Arealloc( void *old_ptr, size_t old_size, size_t new_size, |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
426 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
| 0 | 427 |
| 428 // Move contents of this arena into an empty arena | |
| 429 Arena *move_contents(Arena *empty_arena); | |
| 430 | |
| 431 // Determine if pointer belongs to this Arena or not. | |
| 432 bool contains( const void *ptr ) const; | |
| 433 | |
| 434 // Total of all chunks in use (not thread-safe) | |
| 435 size_t used() const; | |
| 436 | |
| 437 // Total # of bytes used | |
| 6197 | 438 size_t size_in_bytes() const { return _size_in_bytes; }; |
| 439 void set_size_in_bytes(size_t size); | |
| 440 | |
| 0 | 441 static void free_malloced_objects(Chunk* chunk, char* hwm, char* max, char* hwm2) PRODUCT_RETURN; |
| 442 static void free_all(char** start, char** end) PRODUCT_RETURN; | |
| 443 | |
| 6197 | 444 // how many arena instances |
| 445 NOT_PRODUCT(static volatile jint _instance_count;) | |
| 0 | 446 private: |
| 447 // Reset this Arena to empty, access will trigger grow if necessary | |
| 448 void reset(void) { | |
| 449 _first = _chunk = NULL; | |
| 450 _hwm = _max = NULL; | |
| 6197 | 451 set_size_in_bytes(0); |
| 0 | 452 } |
| 453 }; | |
| 454 | |
| 455 // One of the following macros must be used when allocating | |
| 456 // an array or object from an arena | |
|
1836
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
457 #define NEW_ARENA_ARRAY(arena, type, size) \ |
|
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
458 (type*) (arena)->Amalloc((size) * sizeof(type)) |
| 0 | 459 |
|
1836
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
460 #define REALLOC_ARENA_ARRAY(arena, type, old, old_size, new_size) \ |
|
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
461 (type*) (arena)->Arealloc((char*)(old), (old_size) * sizeof(type), \ |
|
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
462 (new_size) * sizeof(type) ) |
| 0 | 463 |
|
1836
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
464 #define FREE_ARENA_ARRAY(arena, type, old, size) \ |
|
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
465 (arena)->Afree((char*)(old), (size) * sizeof(type)) |
| 0 | 466 |
|
1836
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1689
diff
changeset
|
467 #define NEW_ARENA_OBJ(arena, type) \ |
| 0 | 468 NEW_ARENA_ARRAY(arena, type, 1) |
| 469 | |
| 470 | |
| 471 //%note allocation_1 | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
472 extern char* resource_allocate_bytes(size_t size, |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
473 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
474 extern char* resource_allocate_bytes(Thread* thread, size_t size, |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
475 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
476 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size, |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
477 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
| 0 | 478 extern void resource_free_bytes( char *old, size_t size ); |
| 479 | |
| 480 //---------------------------------------------------------------------- | |
| 481 // Base class for objects allocated in the resource area per default. | |
| 482 // Optionally, objects may be allocated on the C heap with | |
| 483 // new(ResourceObj::C_HEAP) Foo(...) or in an Arena with new (&arena) | |
| 484 // ResourceObj's can be allocated within other objects, but don't use | |
| 485 // new or delete (allocation_type is unknown). If new is used to allocate, | |
| 486 // use delete to deallocate. | |
| 487 class ResourceObj ALLOCATION_SUPER_CLASS_SPEC { | |
| 488 public: | |
| 1685 | 489 enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 }; |
|
1688
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
490 static void set_allocation_type(address res, allocation_type type) NOT_DEBUG_RETURN; |
| 0 | 491 #ifdef ASSERT |
| 492 private: | |
| 1685 | 493 // When this object is allocated on stack the new() operator is not |
| 494 // called but garbage on stack may look like a valid allocation_type. | |
| 495 // Store negated 'this' pointer when new() is called to distinguish cases. | |
|
2015
79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
kvn
parents:
1972
diff
changeset
|
496 // Use second array's element for verification value to distinguish garbage. |
|
79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
kvn
parents:
1972
diff
changeset
|
497 uintptr_t _allocation_t[2]; |
|
79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
kvn
parents:
1972
diff
changeset
|
498 bool is_type_set() const; |
| 0 | 499 public: |
|
1688
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
500 allocation_type get_allocation_type() const; |
|
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
501 bool allocated_on_stack() const { return get_allocation_type() == STACK_OR_EMBEDDED; } |
|
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
502 bool allocated_on_res_area() const { return get_allocation_type() == RESOURCE_AREA; } |
|
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
503 bool allocated_on_C_heap() const { return get_allocation_type() == C_HEAP; } |
|
2dfd013a7465
6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents:
1685
diff
changeset
|
504 bool allocated_on_arena() const { return get_allocation_type() == ARENA; } |
| 1685 | 505 ResourceObj(); // default construtor |
| 506 ResourceObj(const ResourceObj& r); // default copy construtor | |
| 507 ResourceObj& operator=(const ResourceObj& r); // default copy assignment | |
| 508 ~ResourceObj(); | |
| 0 | 509 #endif // ASSERT |
| 510 | |
| 511 public: | |
| 6197 | 512 void* operator new(size_t size, allocation_type type, MEMFLAGS flags); |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
513 void* operator new(size_t size, const std::nothrow_t& nothrow_constant, |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
514 allocation_type type, MEMFLAGS flags); |
| 0 | 515 void* operator new(size_t size, Arena *arena) { |
| 516 address res = (address)arena->Amalloc(size); | |
| 1685 | 517 DEBUG_ONLY(set_allocation_type(res, ARENA);) |
| 0 | 518 return res; |
| 519 } | |
| 520 void* operator new(size_t size) { | |
| 521 address res = (address)resource_allocate_bytes(size); | |
| 1685 | 522 DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);) |
| 0 | 523 return res; |
| 524 } | |
|
6872
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
525 |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
526 void* operator new(size_t size, const std::nothrow_t& nothrow_constant) { |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
527 address res = (address)resource_allocate_bytes(size, AllocFailStrategy::RETURN_NULL); |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
528 DEBUG_ONLY(if (res != NULL) set_allocation_type(res, RESOURCE_AREA);) |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
529 return res; |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
530 } |
|
7b5885dadbdc
8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents:
6854
diff
changeset
|
531 |
| 0 | 532 void operator delete(void* p); |
| 533 }; | |
| 534 | |
| 535 // One of the following macros must be used when allocating an array | |
| 536 // or object to determine whether it should reside in the C heap on in | |
| 537 // the resource area. | |
| 538 | |
| 539 #define NEW_RESOURCE_ARRAY(type, size)\ | |
| 540 (type*) resource_allocate_bytes((size) * sizeof(type)) | |
| 541 | |
| 542 #define NEW_RESOURCE_ARRAY_IN_THREAD(thread, type, size)\ | |
| 543 (type*) resource_allocate_bytes(thread, (size) * sizeof(type)) | |
| 544 | |
| 545 #define REALLOC_RESOURCE_ARRAY(type, old, old_size, new_size)\ | |
| 546 (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type), (new_size) * sizeof(type) ) | |
| 547 | |
| 548 #define FREE_RESOURCE_ARRAY(type, old, size)\ | |
| 549 resource_free_bytes((char*)(old), (size) * sizeof(type)) | |
| 550 | |
| 551 #define FREE_FAST(old)\ | |
| 552 /* nop */ | |
| 553 | |
| 554 #define NEW_RESOURCE_OBJ(type)\ | |
| 555 NEW_RESOURCE_ARRAY(type, 1) | |
| 556 | |
| 6197 | 557 #define NEW_C_HEAP_ARRAY(type, size, memflags)\ |
| 558 (type*) (AllocateHeap((size) * sizeof(type), memflags)) | |
| 0 | 559 |
| 6197 | 560 #define REALLOC_C_HEAP_ARRAY(type, old, size, memflags)\ |
| 561 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags)) | |
| 562 | |
| 10135 | 563 #define FREE_C_HEAP_ARRAY(type,old,memflags) \ |
| 6197 | 564 FreeHeap((char*)(old), memflags) |
| 0 | 565 |
| 6197 | 566 #define NEW_C_HEAP_OBJ(type, memflags)\ |
| 567 NEW_C_HEAP_ARRAY(type, 1, memflags) | |
| 568 | |
| 10135 | 569 |
| 6197 | 570 #define NEW_C_HEAP_ARRAY2(type, size, memflags, pc)\ |
| 571 (type*) (AllocateHeap((size) * sizeof(type), memflags, pc)) | |
| 0 | 572 |
| 6197 | 573 #define REALLOC_C_HEAP_ARRAY2(type, old, size, memflags, pc)\ |
| 574 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags, pc)) | |
| 575 | |
| 10135 | 576 #define NEW_C_HEAP_OBJ2(type, memflags, pc)\ |
| 577 NEW_C_HEAP_ARRAY2(type, 1, memflags, pc) | |
| 6197 | 578 |
| 0 | 579 |
| 580 extern bool warn_new_operator; | |
| 581 | |
| 582 // for statistics | |
| 583 #ifndef PRODUCT | |
| 584 class AllocStats : StackObj { | |
| 2250 | 585 julong start_mallocs, start_frees; |
| 586 julong start_malloc_bytes, start_mfree_bytes, start_res_bytes; | |
| 0 | 587 public: |
| 588 AllocStats(); | |
| 589 | |
| 2250 | 590 julong num_mallocs(); // since creation of receiver |
| 591 julong alloc_bytes(); | |
| 592 julong num_frees(); | |
| 593 julong free_bytes(); | |
| 594 julong resource_bytes(); | |
| 0 | 595 void print(); |
| 596 }; | |
| 597 #endif | |
| 598 | |
| 599 | |
| 600 //------------------------------ReallocMark--------------------------------- | |
| 601 // Code which uses REALLOC_RESOURCE_ARRAY should check an associated | |
| 602 // ReallocMark, which is declared in the same scope as the reallocated | |
| 603 // pointer. Any operation that could __potentially__ cause a reallocation | |
| 604 // should check the ReallocMark. | |
| 605 class ReallocMark: public StackObj { | |
| 606 protected: | |
| 607 NOT_PRODUCT(int _nesting;) | |
| 608 | |
| 609 public: | |
| 610 ReallocMark() PRODUCT_RETURN; | |
| 611 void check() PRODUCT_RETURN; | |
| 612 }; | |
| 1972 | 613 |
|
9073
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
614 // Helper class to allocate arrays that may become large. |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
615 // Uses the OS malloc for allocations smaller than ArrayAllocatorMallocLimit |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
616 // and uses mapped memory for larger allocations. |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
617 // Most OS mallocs do something similar but Solaris malloc does not revert |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
618 // to mapped memory for large allocations. By default ArrayAllocatorMallocLimit |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
619 // is set so that we always use malloc except for Solaris where we set the |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
620 // limit to get mapped memory. |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
621 template <class E, MEMFLAGS F> |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
622 class ArrayAllocator : StackObj { |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
623 char* _addr; |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
624 bool _use_malloc; |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
625 size_t _size; |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
626 public: |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
627 ArrayAllocator() : _addr(NULL), _use_malloc(false), _size(0) { } |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
628 ~ArrayAllocator() { free(); } |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
629 E* allocate(size_t length); |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
630 void free(); |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
631 }; |
|
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
7971
diff
changeset
|
632 |
| 1972 | 633 #endif // SHARE_VM_MEMORY_ALLOCATION_HPP |