Mercurial > hg > truffle
annotate src/share/vm/memory/allocation.hpp @ 7482:989155e2d07a
Merge with hs25-b15.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 16 Jan 2013 01:34:24 +0100 |
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0 | 1 /* |
6197 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_MEMORY_ALLOCATION_HPP |
26 #define SHARE_VM_MEMORY_ALLOCATION_HPP | |
27 | |
28 #include "runtime/globals.hpp" | |
29 #include "utilities/globalDefinitions.hpp" | |
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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 | |
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37 #ifdef GRAAL |
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38 #include "graal/graalGlobals.hpp" |
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39 #endif |
1972 | 40 |
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41 #include <new> |
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42 |
0 | 43 #define ARENA_ALIGN_M1 (((size_t)(ARENA_AMALLOC_ALIGNMENT)) - 1) |
44 #define ARENA_ALIGN_MASK (~((size_t)ARENA_ALIGN_M1)) | |
45 #define ARENA_ALIGN(x) ((((size_t)(x)) + ARENA_ALIGN_M1) & ARENA_ALIGN_MASK) | |
46 | |
6197 | 47 |
48 // noinline attribute | |
49 #ifdef _WINDOWS | |
50 #define _NOINLINE_ __declspec(noinline) | |
51 #else | |
52 #if __GNUC__ < 3 // gcc 2.x does not support noinline attribute | |
53 #define _NOINLINE_ | |
54 #else | |
55 #define _NOINLINE_ __attribute__ ((noinline)) | |
56 #endif | |
57 #endif | |
58 | |
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59 class AllocFailStrategy { |
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60 public: |
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61 enum AllocFailEnum { EXIT_OOM, RETURN_NULL }; |
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62 }; |
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63 typedef AllocFailStrategy::AllocFailEnum AllocFailType; |
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64 |
0 | 65 // All classes in the virtual machine must be subclassed |
66 // by one of the following allocation classes: | |
67 // | |
68 // For objects allocated in the resource area (see resourceArea.hpp). | |
69 // - ResourceObj | |
70 // | |
71 // For objects allocated in the C-heap (managed by: free & malloc). | |
72 // - CHeapObj | |
73 // | |
74 // For objects allocated on the stack. | |
75 // - StackObj | |
76 // | |
77 // For embedded objects. | |
78 // - ValueObj | |
79 // | |
80 // For classes used as name spaces. | |
81 // - AllStatic | |
82 // | |
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83 // For classes in Metaspace (class data) |
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84 // - MetaspaceObj |
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85 // |
0 | 86 // The printable subclasses are used for debugging and define virtual |
87 // member functions for printing. Classes that avoid allocating the | |
88 // vtbl entries in the objects should therefore not be the printable | |
89 // subclasses. | |
90 // | |
91 // The following macros and function should be used to allocate memory | |
92 // directly in the resource area or in the C-heap: | |
93 // | |
94 // NEW_RESOURCE_ARRAY(type,size) | |
95 // NEW_RESOURCE_OBJ(type) | |
96 // NEW_C_HEAP_ARRAY(type,size) | |
97 // NEW_C_HEAP_OBJ(type) | |
98 // char* AllocateHeap(size_t size, const char* name); | |
99 // void FreeHeap(void* p); | |
100 // | |
101 // C-heap allocation can be traced using +PrintHeapAllocation. | |
102 // malloc and free should therefore never called directly. | |
103 | |
104 // Base class for objects allocated in the C-heap. | |
105 | |
106 // In non product mode we introduce a super class for all allocation classes | |
107 // that supports printing. | |
108 // We avoid the superclass in product mode since some C++ compilers add | |
109 // a word overhead for empty super classes. | |
110 | |
111 #ifdef PRODUCT | |
112 #define ALLOCATION_SUPER_CLASS_SPEC | |
113 #else | |
114 #define ALLOCATION_SUPER_CLASS_SPEC : public AllocatedObj | |
115 class AllocatedObj { | |
116 public: | |
117 // Printing support | |
118 void print() const; | |
119 void print_value() const; | |
120 | |
121 virtual void print_on(outputStream* st) const; | |
122 virtual void print_value_on(outputStream* st) const; | |
123 }; | |
124 #endif | |
125 | |
6197 | 126 |
127 /* | |
128 * MemoryType bitmap layout: | |
129 * | 16 15 14 13 12 11 10 09 | 08 07 06 05 | 04 03 02 01 | | |
130 * | memory type | object | reserved | | |
131 * | | type | | | |
132 */ | |
133 enum MemoryType { | |
134 // Memory type by sub systems. It occupies lower byte. | |
135 mtNone = 0x0000, // undefined | |
136 mtClass = 0x0100, // memory class for Java classes | |
137 mtThread = 0x0200, // memory for thread objects | |
138 mtThreadStack = 0x0300, | |
139 mtCode = 0x0400, // memory for generated code | |
140 mtGC = 0x0500, // memory for GC | |
141 mtCompiler = 0x0600, // memory for compiler | |
142 mtInternal = 0x0700, // memory used by VM, but does not belong to | |
143 // any of above categories, and not used for | |
144 // native memory tracking | |
145 mtOther = 0x0800, // memory not used by VM | |
146 mtSymbol = 0x0900, // symbol | |
147 mtNMT = 0x0A00, // memory used by native memory tracking | |
148 mtChunk = 0x0B00, // chunk that holds content of arenas | |
149 mtJavaHeap = 0x0C00, // Java heap | |
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150 mtClassShared = 0x0D00, // class data sharing |
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151 mt_number_of_types = 0x000D, // number of memory types (mtDontTrack |
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152 // is not included as validate type) |
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153 mtDontTrack = 0x0E00, // memory we do not or cannot track |
6197 | 154 mt_masks = 0x7F00, |
155 | |
156 // object type mask | |
157 otArena = 0x0010, // an arena object | |
158 otNMTRecorder = 0x0020, // memory recorder object | |
159 ot_masks = 0x00F0 | |
160 }; | |
161 | |
162 #define IS_MEMORY_TYPE(flags, type) ((flags & mt_masks) == type) | |
163 #define HAS_VALID_MEMORY_TYPE(flags)((flags & mt_masks) != mtNone) | |
164 #define FLAGS_TO_MEMORY_TYPE(flags) (flags & mt_masks) | |
165 | |
166 #define IS_ARENA_OBJ(flags) ((flags & ot_masks) == otArena) | |
167 #define IS_NMT_RECORDER(flags) ((flags & ot_masks) == otNMTRecorder) | |
168 #define NMT_CAN_TRACK(flags) (!IS_NMT_RECORDER(flags) && !(IS_MEMORY_TYPE(flags, mtDontTrack))) | |
169 | |
170 typedef unsigned short MEMFLAGS; | |
171 | |
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172 #if INCLUDE_NMT |
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173 |
6197 | 174 extern bool NMT_track_callsite; |
175 | |
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176 #else |
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177 |
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178 const bool NMT_track_callsite = false; |
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179 |
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180 #endif // INCLUDE_NMT |
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181 |
6197 | 182 // debug build does not inline |
183 #if defined(_DEBUG_) | |
184 #define CURRENT_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0) | |
185 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) | |
186 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(3) : 0) | |
187 #else | |
188 #define CURRENT_PC (NMT_track_callsite? os::get_caller_pc(0) : 0) | |
189 #define CALLER_PC (NMT_track_callsite ? os::get_caller_pc(1) : 0) | |
190 #define CALLER_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) | |
191 #endif | |
192 | |
193 | |
194 | |
195 template <MEMFLAGS F> class CHeapObj ALLOCATION_SUPER_CLASS_SPEC { | |
0 | 196 public: |
6197 | 197 _NOINLINE_ void* operator new(size_t size, address caller_pc = 0); |
198 _NOINLINE_ void* operator new (size_t size, const std::nothrow_t& nothrow_constant, | |
199 address caller_pc = 0); | |
200 | |
0 | 201 void operator delete(void* p); |
202 }; | |
203 | |
204 // Base class for objects allocated on the stack only. | |
205 // Calling new or delete will result in fatal error. | |
206 | |
207 class StackObj ALLOCATION_SUPER_CLASS_SPEC { | |
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208 private: |
0 | 209 void* operator new(size_t size); |
210 void operator delete(void* p); | |
211 }; | |
212 | |
213 // Base class for objects used as value objects. | |
214 // Calling new or delete will result in fatal error. | |
215 // | |
216 // Portability note: Certain compilers (e.g. gcc) will | |
217 // always make classes bigger if it has a superclass, even | |
218 // if the superclass does not have any virtual methods or | |
219 // instance fields. The HotSpot implementation relies on this | |
220 // not to happen. So never make a ValueObj class a direct subclass | |
221 // of this object, but use the VALUE_OBJ_CLASS_SPEC class instead, e.g., | |
222 // like this: | |
223 // | |
224 // class A VALUE_OBJ_CLASS_SPEC { | |
225 // ... | |
226 // } | |
227 // | |
228 // With gcc and possible other compilers the VALUE_OBJ_CLASS_SPEC can | |
229 // be defined as a an empty string "". | |
230 // | |
231 class _ValueObj { | |
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232 private: |
0 | 233 void* operator new(size_t size); |
234 void operator delete(void* p); | |
235 }; | |
236 | |
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237 |
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238 // Base class for objects stored in Metaspace. |
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239 // Calling delete will result in fatal error. |
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240 // |
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241 // Do not inherit from something with a vptr because this class does |
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242 // not introduce one. This class is used to allocate both shared read-only |
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243 // and shared read-write classes. |
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244 // |
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245 |
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246 class ClassLoaderData; |
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247 |
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248 class MetaspaceObj { |
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249 public: |
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250 bool is_metadata() const; |
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251 bool is_metaspace_object() const; // more specific test but slower |
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252 bool is_shared() const; |
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253 void print_address_on(outputStream* st) const; // nonvirtual address printing |
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254 |
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255 void* operator new(size_t size, ClassLoaderData* loader_data, |
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256 size_t word_size, bool read_only, Thread* thread); |
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257 // can't use TRAPS from this header file. |
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258 void operator delete(void* p) { ShouldNotCallThis(); } |
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259 }; |
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260 |
0 | 261 // Base class for classes that constitute name spaces. |
262 | |
263 class AllStatic { | |
264 public: | |
265 AllStatic() { ShouldNotCallThis(); } | |
266 ~AllStatic() { ShouldNotCallThis(); } | |
267 }; | |
268 | |
269 | |
270 //------------------------------Chunk------------------------------------------ | |
271 // Linked list of raw memory chunks | |
6197 | 272 class Chunk: CHeapObj<mtChunk> { |
3939 | 273 friend class VMStructs; |
274 | |
0 | 275 protected: |
276 Chunk* _next; // Next Chunk in list | |
277 const size_t _len; // Size of this Chunk | |
278 public: | |
279 void* operator new(size_t size, size_t length); | |
280 void operator delete(void* p); | |
281 Chunk(size_t length); | |
282 | |
283 enum { | |
284 // default sizes; make them slightly smaller than 2**k to guard against | |
285 // buddy-system style malloc implementations | |
286 #ifdef _LP64 | |
287 slack = 40, // [RGV] Not sure if this is right, but make it | |
288 // a multiple of 8. | |
289 #else | |
290 slack = 20, // suspected sizeof(Chunk) + internal malloc headers | |
291 #endif | |
292 | |
293 init_size = 1*K - slack, // Size of first chunk | |
294 medium_size= 10*K - slack, // Size of medium-sized chunk | |
295 size = 32*K - slack, // Default size of an Arena chunk (following the first) | |
296 non_pool_size = init_size + 32 // An initial size which is not one of above | |
297 }; | |
298 | |
299 void chop(); // Chop this chunk | |
300 void next_chop(); // Chop next chunk | |
301 static size_t aligned_overhead_size(void) { return ARENA_ALIGN(sizeof(Chunk)); } | |
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302 static size_t aligned_overhead_size(size_t byte_size) { return ARENA_ALIGN(byte_size); } |
0 | 303 |
304 size_t length() const { return _len; } | |
305 Chunk* next() const { return _next; } | |
306 void set_next(Chunk* n) { _next = n; } | |
307 // Boundaries of data area (possibly unused) | |
308 char* bottom() const { return ((char*) this) + aligned_overhead_size(); } | |
309 char* top() const { return bottom() + _len; } | |
310 bool contains(char* p) const { return bottom() <= p && p <= top(); } | |
311 | |
312 // Start the chunk_pool cleaner task | |
313 static void start_chunk_pool_cleaner_task(); | |
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314 |
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315 static void clean_chunk_pool(); |
0 | 316 }; |
317 | |
318 //------------------------------Arena------------------------------------------ | |
319 // Fast allocation of memory | |
6197 | 320 class Arena : public CHeapObj<mtNone|otArena> { |
0 | 321 protected: |
322 friend class ResourceMark; | |
323 friend class HandleMark; | |
324 friend class NoHandleMark; | |
3939 | 325 friend class VMStructs; |
326 | |
0 | 327 Chunk *_first; // First chunk |
328 Chunk *_chunk; // current chunk | |
329 char *_hwm, *_max; // High water mark and max in current chunk | |
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330 // Get a new Chunk of at least size x |
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331 void* grow(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
6197 | 332 size_t _size_in_bytes; // Size of arena (used for native memory tracking) |
333 | |
2250 | 334 NOT_PRODUCT(static julong _bytes_allocated;) // total #bytes allocated since start |
0 | 335 friend class AllocStats; |
336 debug_only(void* malloc(size_t size);) | |
337 debug_only(void* internal_malloc_4(size_t x);) | |
2250 | 338 NOT_PRODUCT(void inc_bytes_allocated(size_t x);) |
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339 |
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340 void signal_out_of_memory(size_t request, const char* whence) const; |
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341 |
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342 void check_for_overflow(size_t request, const char* whence) const { |
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343 if (UINTPTR_MAX - request < (uintptr_t)_hwm) { |
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344 signal_out_of_memory(request, whence); |
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345 } |
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346 } |
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347 |
0 | 348 public: |
349 Arena(); | |
350 Arena(size_t init_size); | |
351 ~Arena(); | |
352 void destruct_contents(); | |
353 char* hwm() const { return _hwm; } | |
354 | |
6197 | 355 // new operators |
356 void* operator new (size_t size); | |
357 void* operator new (size_t size, const std::nothrow_t& nothrow_constant); | |
358 | |
359 // dynamic memory type tagging | |
360 void* operator new(size_t size, MEMFLAGS flags); | |
361 void* operator new(size_t size, const std::nothrow_t& nothrow_constant, MEMFLAGS flags); | |
362 void operator delete(void* p); | |
363 | |
0 | 364 // Fast allocate in the arena. Common case is: pointer test + increment. |
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365 void* Amalloc(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
0 | 366 assert(is_power_of_2(ARENA_AMALLOC_ALIGNMENT) , "should be a power of 2"); |
367 x = ARENA_ALIGN(x); | |
368 debug_only(if (UseMallocOnly) return malloc(x);) | |
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369 check_for_overflow(x, "Arena::Amalloc"); |
2250 | 370 NOT_PRODUCT(inc_bytes_allocated(x);) |
0 | 371 if (_hwm + x > _max) { |
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372 return grow(x, alloc_failmode); |
0 | 373 } else { |
374 char *old = _hwm; | |
375 _hwm += x; | |
376 return old; | |
377 } | |
378 } | |
379 // Further assume size is padded out to words | |
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380 void *Amalloc_4(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
0 | 381 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); |
382 debug_only(if (UseMallocOnly) return malloc(x);) | |
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383 check_for_overflow(x, "Arena::Amalloc_4"); |
2250 | 384 NOT_PRODUCT(inc_bytes_allocated(x);) |
0 | 385 if (_hwm + x > _max) { |
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386 return grow(x, alloc_failmode); |
0 | 387 } else { |
388 char *old = _hwm; | |
389 _hwm += x; | |
390 return old; | |
391 } | |
392 } | |
393 | |
394 // Allocate with 'double' alignment. It is 8 bytes on sparc. | |
395 // In other cases Amalloc_D() should be the same as Amalloc_4(). | |
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396 void* Amalloc_D(size_t x, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) { |
0 | 397 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); |
398 debug_only(if (UseMallocOnly) return malloc(x);) | |
399 #if defined(SPARC) && !defined(_LP64) | |
400 #define DALIGN_M1 7 | |
401 size_t delta = (((size_t)_hwm + DALIGN_M1) & ~DALIGN_M1) - (size_t)_hwm; | |
402 x += delta; | |
403 #endif | |
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404 check_for_overflow(x, "Arena::Amalloc_D"); |
2250 | 405 NOT_PRODUCT(inc_bytes_allocated(x);) |
0 | 406 if (_hwm + x > _max) { |
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407 return grow(x, alloc_failmode); // grow() returns a result aligned >= 8 bytes. |
0 | 408 } else { |
409 char *old = _hwm; | |
410 _hwm += x; | |
411 #if defined(SPARC) && !defined(_LP64) | |
412 old += delta; // align to 8-bytes | |
413 #endif | |
414 return old; | |
415 } | |
416 } | |
417 | |
418 // Fast delete in area. Common case is: NOP (except for storage reclaimed) | |
419 void Afree(void *ptr, size_t size) { | |
420 #ifdef ASSERT | |
421 if (ZapResourceArea) memset(ptr, badResourceValue, size); // zap freed memory | |
422 if (UseMallocOnly) return; | |
423 #endif | |
424 if (((char*)ptr) + size == _hwm) _hwm = (char*)ptr; | |
425 } | |
426 | |
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427 void *Arealloc( void *old_ptr, size_t old_size, size_t new_size, |
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428 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
0 | 429 |
430 // Move contents of this arena into an empty arena | |
431 Arena *move_contents(Arena *empty_arena); | |
432 | |
433 // Determine if pointer belongs to this Arena or not. | |
434 bool contains( const void *ptr ) const; | |
435 | |
436 // Total of all chunks in use (not thread-safe) | |
437 size_t used() const; | |
438 | |
439 // Total # of bytes used | |
6197 | 440 size_t size_in_bytes() const { return _size_in_bytes; }; |
441 void set_size_in_bytes(size_t size); | |
442 | |
0 | 443 static void free_malloced_objects(Chunk* chunk, char* hwm, char* max, char* hwm2) PRODUCT_RETURN; |
444 static void free_all(char** start, char** end) PRODUCT_RETURN; | |
445 | |
6197 | 446 // how many arena instances |
447 NOT_PRODUCT(static volatile jint _instance_count;) | |
0 | 448 private: |
449 // Reset this Arena to empty, access will trigger grow if necessary | |
450 void reset(void) { | |
451 _first = _chunk = NULL; | |
452 _hwm = _max = NULL; | |
6197 | 453 set_size_in_bytes(0); |
0 | 454 } |
455 }; | |
456 | |
457 // One of the following macros must be used when allocating | |
458 // an array or object from an arena | |
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459 #define NEW_ARENA_ARRAY(arena, type, size) \ |
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460 (type*) (arena)->Amalloc((size) * sizeof(type)) |
0 | 461 |
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462 #define REALLOC_ARENA_ARRAY(arena, type, old, old_size, new_size) \ |
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463 (type*) (arena)->Arealloc((char*)(old), (old_size) * sizeof(type), \ |
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464 (new_size) * sizeof(type) ) |
0 | 465 |
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466 #define FREE_ARENA_ARRAY(arena, type, old, size) \ |
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467 (arena)->Afree((char*)(old), (size) * sizeof(type)) |
0 | 468 |
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469 #define NEW_ARENA_OBJ(arena, type) \ |
0 | 470 NEW_ARENA_ARRAY(arena, type, 1) |
471 | |
472 | |
473 //%note allocation_1 | |
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474 extern char* resource_allocate_bytes(size_t size, |
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475 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
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476 extern char* resource_allocate_bytes(Thread* thread, size_t size, |
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477 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
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478 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size, |
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479 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); |
0 | 480 extern void resource_free_bytes( char *old, size_t size ); |
481 | |
482 //---------------------------------------------------------------------- | |
483 // Base class for objects allocated in the resource area per default. | |
484 // Optionally, objects may be allocated on the C heap with | |
485 // new(ResourceObj::C_HEAP) Foo(...) or in an Arena with new (&arena) | |
486 // ResourceObj's can be allocated within other objects, but don't use | |
487 // new or delete (allocation_type is unknown). If new is used to allocate, | |
488 // use delete to deallocate. | |
489 class ResourceObj ALLOCATION_SUPER_CLASS_SPEC { | |
490 public: | |
1685 | 491 enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 }; |
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492 static void set_allocation_type(address res, allocation_type type) NOT_DEBUG_RETURN; |
0 | 493 #ifdef ASSERT |
494 private: | |
1685 | 495 // When this object is allocated on stack the new() operator is not |
496 // called but garbage on stack may look like a valid allocation_type. | |
497 // Store negated 'this' pointer when new() is called to distinguish cases. | |
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498 // Use second array's element for verification value to distinguish garbage. |
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499 uintptr_t _allocation_t[2]; |
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500 bool is_type_set() const; |
0 | 501 public: |
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502 allocation_type get_allocation_type() const; |
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503 bool allocated_on_stack() const { return get_allocation_type() == STACK_OR_EMBEDDED; } |
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504 bool allocated_on_res_area() const { return get_allocation_type() == RESOURCE_AREA; } |
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505 bool allocated_on_C_heap() const { return get_allocation_type() == C_HEAP; } |
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506 bool allocated_on_arena() const { return get_allocation_type() == ARENA; } |
1685 | 507 ResourceObj(); // default construtor |
508 ResourceObj(const ResourceObj& r); // default copy construtor | |
509 ResourceObj& operator=(const ResourceObj& r); // default copy assignment | |
510 ~ResourceObj(); | |
0 | 511 #endif // ASSERT |
512 | |
513 public: | |
6197 | 514 void* operator new(size_t size, allocation_type type, MEMFLAGS flags); |
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515 void* operator new(size_t size, const std::nothrow_t& nothrow_constant, |
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516 allocation_type type, MEMFLAGS flags); |
0 | 517 void* operator new(size_t size, Arena *arena) { |
518 address res = (address)arena->Amalloc(size); | |
1685 | 519 DEBUG_ONLY(set_allocation_type(res, ARENA);) |
0 | 520 return res; |
521 } | |
522 void* operator new(size_t size) { | |
523 address res = (address)resource_allocate_bytes(size); | |
1685 | 524 DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);) |
0 | 525 return res; |
526 } | |
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527 |
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528 void* operator new(size_t size, const std::nothrow_t& nothrow_constant) { |
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529 address res = (address)resource_allocate_bytes(size, AllocFailStrategy::RETURN_NULL); |
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530 DEBUG_ONLY(if (res != NULL) set_allocation_type(res, RESOURCE_AREA);) |
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531 return res; |
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532 } |
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533 |
0 | 534 void operator delete(void* p); |
535 }; | |
536 | |
537 // One of the following macros must be used when allocating an array | |
538 // or object to determine whether it should reside in the C heap on in | |
539 // the resource area. | |
540 | |
541 #define NEW_RESOURCE_ARRAY(type, size)\ | |
542 (type*) resource_allocate_bytes((size) * sizeof(type)) | |
543 | |
544 #define NEW_RESOURCE_ARRAY_IN_THREAD(thread, type, size)\ | |
545 (type*) resource_allocate_bytes(thread, (size) * sizeof(type)) | |
546 | |
547 #define REALLOC_RESOURCE_ARRAY(type, old, old_size, new_size)\ | |
548 (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type), (new_size) * sizeof(type) ) | |
549 | |
550 #define FREE_RESOURCE_ARRAY(type, old, size)\ | |
551 resource_free_bytes((char*)(old), (size) * sizeof(type)) | |
552 | |
553 #define FREE_FAST(old)\ | |
554 /* nop */ | |
555 | |
556 #define NEW_RESOURCE_OBJ(type)\ | |
557 NEW_RESOURCE_ARRAY(type, 1) | |
558 | |
6197 | 559 #define NEW_C_HEAP_ARRAY(type, size, memflags)\ |
560 (type*) (AllocateHeap((size) * sizeof(type), memflags)) | |
0 | 561 |
6197 | 562 #define REALLOC_C_HEAP_ARRAY(type, old, size, memflags)\ |
563 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags)) | |
564 | |
565 #define FREE_C_HEAP_ARRAY(type,old,memflags) \ | |
566 FreeHeap((char*)(old), memflags) | |
0 | 567 |
6197 | 568 #define NEW_C_HEAP_OBJ(type, memflags)\ |
569 NEW_C_HEAP_ARRAY(type, 1, memflags) | |
570 | |
571 | |
572 #define NEW_C_HEAP_ARRAY2(type, size, memflags, pc)\ | |
573 (type*) (AllocateHeap((size) * sizeof(type), memflags, pc)) | |
0 | 574 |
6197 | 575 #define REALLOC_C_HEAP_ARRAY2(type, old, size, memflags, pc)\ |
576 (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags, pc)) | |
577 | |
578 #define NEW_C_HEAP_OBJ2(type, memflags, pc)\ | |
579 NEW_C_HEAP_ARRAY2(type, 1, memflags, pc) | |
580 | |
0 | 581 |
582 extern bool warn_new_operator; | |
583 | |
584 // for statistics | |
585 #ifndef PRODUCT | |
586 class AllocStats : StackObj { | |
2250 | 587 julong start_mallocs, start_frees; |
588 julong start_malloc_bytes, start_mfree_bytes, start_res_bytes; | |
0 | 589 public: |
590 AllocStats(); | |
591 | |
2250 | 592 julong num_mallocs(); // since creation of receiver |
593 julong alloc_bytes(); | |
594 julong num_frees(); | |
595 julong free_bytes(); | |
596 julong resource_bytes(); | |
0 | 597 void print(); |
598 }; | |
599 #endif | |
600 | |
601 | |
602 //------------------------------ReallocMark--------------------------------- | |
603 // Code which uses REALLOC_RESOURCE_ARRAY should check an associated | |
604 // ReallocMark, which is declared in the same scope as the reallocated | |
605 // pointer. Any operation that could __potentially__ cause a reallocation | |
606 // should check the ReallocMark. | |
607 class ReallocMark: public StackObj { | |
608 protected: | |
609 NOT_PRODUCT(int _nesting;) | |
610 | |
611 public: | |
612 ReallocMark() PRODUCT_RETURN; | |
613 void check() PRODUCT_RETURN; | |
614 }; | |
1972 | 615 |
616 #endif // SHARE_VM_MEMORY_ALLOCATION_HPP |