Mercurial > hg > truffle
annotate src/share/vm/memory/allocation.cpp @ 1839:e41cd7fd68a6
6794422: Perm gen expansion policy for concurrent collectors
Summary: Concurrent collectors should expand the perm gen without a full STW GC, but possibly by triggering a concurrent collection. Temporary band-aid for G1 where no concurrent collection is kicked off since the perm gen is not collected concurrently.
Reviewed-by: johnc
| author | ysr |
|---|---|
| date | Fri, 01 Oct 2010 16:12:54 -0700 |
| parents | ebfb7c68865e |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2005, 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 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_allocation.cpp.incl" | |
| 27 | |
| 28 void* CHeapObj::operator new(size_t size){ | |
| 29 return (void *) AllocateHeap(size, "CHeapObj-new"); | |
| 30 } | |
| 31 | |
| 32 void CHeapObj::operator delete(void* p){ | |
| 33 FreeHeap(p); | |
| 34 } | |
| 35 | |
| 36 void* StackObj::operator new(size_t size) { ShouldNotCallThis(); return 0; }; | |
| 37 void StackObj::operator delete(void* p) { ShouldNotCallThis(); }; | |
| 38 void* _ValueObj::operator new(size_t size) { ShouldNotCallThis(); return 0; }; | |
| 39 void _ValueObj::operator delete(void* p) { ShouldNotCallThis(); }; | |
| 40 | |
| 41 void* ResourceObj::operator new(size_t size, allocation_type type) { | |
| 42 address res; | |
| 43 switch (type) { | |
| 44 case C_HEAP: | |
| 45 res = (address)AllocateHeap(size, "C_Heap: ResourceOBJ"); | |
| 1685 | 46 DEBUG_ONLY(set_allocation_type(res, C_HEAP);) |
| 0 | 47 break; |
| 48 case RESOURCE_AREA: | |
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49 // new(size) sets allocation type RESOURCE_AREA. |
| 0 | 50 res = (address)operator new(size); |
| 51 break; | |
| 52 default: | |
| 53 ShouldNotReachHere(); | |
| 54 } | |
| 55 return res; | |
| 56 } | |
| 57 | |
| 58 void ResourceObj::operator delete(void* p) { | |
| 59 assert(((ResourceObj *)p)->allocated_on_C_heap(), | |
| 60 "delete only allowed for C_HEAP objects"); | |
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61 DEBUG_ONLY(((ResourceObj *)p)->_allocation = (uintptr_t)badHeapOopVal;) |
| 0 | 62 FreeHeap(p); |
| 63 } | |
| 64 | |
| 1685 | 65 #ifdef ASSERT |
| 66 void ResourceObj::set_allocation_type(address res, allocation_type type) { | |
| 67 // Set allocation type in the resource object | |
| 68 uintptr_t allocation = (uintptr_t)res; | |
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69 assert((allocation & allocation_mask) == 0, "address should be aligned to 4 bytes at least"); |
| 1685 | 70 assert(type <= allocation_mask, "incorrect allocation type"); |
| 71 ((ResourceObj *)res)->_allocation = ~(allocation + type); | |
| 72 } | |
| 73 | |
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74 ResourceObj::allocation_type ResourceObj::get_allocation_type() const { |
| 1685 | 75 assert(~(_allocation | allocation_mask) == (uintptr_t)this, "lost resource object"); |
| 76 return (allocation_type)((~_allocation) & allocation_mask); | |
| 77 } | |
| 78 | |
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79 ResourceObj::ResourceObj() { // default constructor |
| 1685 | 80 if (~(_allocation | allocation_mask) != (uintptr_t)this) { |
| 81 set_allocation_type((address)this, STACK_OR_EMBEDDED); | |
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82 } else if (allocated_on_stack()) { |
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83 // For some reason we got a value which looks like an allocation on stack. |
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84 // Pass if it is really allocated on stack. |
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85 assert(Thread::current()->on_local_stack((address)this),"should be on stack"); |
| 1685 | 86 } else { |
| 87 assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena(), | |
| 88 "allocation_type should be set by operator new()"); | |
| 89 } | |
| 90 } | |
| 91 | |
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92 ResourceObj::ResourceObj(const ResourceObj& r) { // default copy constructor |
| 1685 | 93 // Used in ClassFileParser::parse_constant_pool_entries() for ClassFileStream. |
| 94 set_allocation_type((address)this, STACK_OR_EMBEDDED); | |
| 95 } | |
| 96 | |
| 97 ResourceObj& ResourceObj::operator=(const ResourceObj& r) { // default copy assignment | |
| 98 // Used in InlineTree::ok_to_inline() for WarmCallInfo. | |
| 99 assert(allocated_on_stack(), "copy only into local"); | |
| 100 // Keep current _allocation value; | |
| 101 return *this; | |
| 102 } | |
| 103 | |
| 104 ResourceObj::~ResourceObj() { | |
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105 // allocated_on_C_heap() also checks that encoded (in _allocation) address == this. |
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106 if (!allocated_on_C_heap()) { // ResourceObj::delete() zaps _allocation for C_heap. |
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107 _allocation = (uintptr_t)badHeapOopVal; // zap type |
| 1685 | 108 } |
| 109 } | |
| 110 #endif // ASSERT | |
| 111 | |
| 112 | |
| 0 | 113 void trace_heap_malloc(size_t size, const char* name, void* p) { |
| 114 // A lock is not needed here - tty uses a lock internally | |
| 115 tty->print_cr("Heap malloc " INTPTR_FORMAT " %7d %s", p, size, name == NULL ? "" : name); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 void trace_heap_free(void* p) { | |
| 120 // A lock is not needed here - tty uses a lock internally | |
| 121 tty->print_cr("Heap free " INTPTR_FORMAT, p); | |
| 122 } | |
| 123 | |
| 124 bool warn_new_operator = false; // see vm_main | |
| 125 | |
| 126 //-------------------------------------------------------------------------------------- | |
| 127 // ChunkPool implementation | |
| 128 | |
| 129 // MT-safe pool of chunks to reduce malloc/free thrashing | |
| 130 // NB: not using Mutex because pools are used before Threads are initialized | |
| 131 class ChunkPool { | |
| 132 Chunk* _first; // first cached Chunk; its first word points to next chunk | |
| 133 size_t _num_chunks; // number of unused chunks in pool | |
| 134 size_t _num_used; // number of chunks currently checked out | |
| 135 const size_t _size; // size of each chunk (must be uniform) | |
| 136 | |
| 137 // Our three static pools | |
| 138 static ChunkPool* _large_pool; | |
| 139 static ChunkPool* _medium_pool; | |
| 140 static ChunkPool* _small_pool; | |
| 141 | |
| 142 // return first element or null | |
| 143 void* get_first() { | |
| 144 Chunk* c = _first; | |
| 145 if (_first) { | |
| 146 _first = _first->next(); | |
| 147 _num_chunks--; | |
| 148 } | |
| 149 return c; | |
| 150 } | |
| 151 | |
| 152 public: | |
| 153 // All chunks in a ChunkPool has the same size | |
| 154 ChunkPool(size_t size) : _size(size) { _first = NULL; _num_chunks = _num_used = 0; } | |
| 155 | |
| 156 // Allocate a new chunk from the pool (might expand the pool) | |
| 157 void* allocate(size_t bytes) { | |
| 158 assert(bytes == _size, "bad size"); | |
| 159 void* p = NULL; | |
| 160 { ThreadCritical tc; | |
| 161 _num_used++; | |
| 162 p = get_first(); | |
| 163 if (p == NULL) p = os::malloc(bytes); | |
| 164 } | |
| 165 if (p == NULL) | |
| 166 vm_exit_out_of_memory(bytes, "ChunkPool::allocate"); | |
| 167 | |
| 168 return p; | |
| 169 } | |
| 170 | |
| 171 // Return a chunk to the pool | |
| 172 void free(Chunk* chunk) { | |
| 173 assert(chunk->length() + Chunk::aligned_overhead_size() == _size, "bad size"); | |
| 174 ThreadCritical tc; | |
| 175 _num_used--; | |
| 176 | |
| 177 // Add chunk to list | |
| 178 chunk->set_next(_first); | |
| 179 _first = chunk; | |
| 180 _num_chunks++; | |
| 181 } | |
| 182 | |
| 183 // Prune the pool | |
| 184 void free_all_but(size_t n) { | |
| 185 // if we have more than n chunks, free all of them | |
| 186 ThreadCritical tc; | |
| 187 if (_num_chunks > n) { | |
| 188 // free chunks at end of queue, for better locality | |
| 189 Chunk* cur = _first; | |
| 190 for (size_t i = 0; i < (n - 1) && cur != NULL; i++) cur = cur->next(); | |
| 191 | |
| 192 if (cur != NULL) { | |
| 193 Chunk* next = cur->next(); | |
| 194 cur->set_next(NULL); | |
| 195 cur = next; | |
| 196 | |
| 197 // Free all remaining chunks | |
| 198 while(cur != NULL) { | |
| 199 next = cur->next(); | |
| 200 os::free(cur); | |
| 201 _num_chunks--; | |
| 202 cur = next; | |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 } | |
| 207 | |
| 208 // Accessors to preallocated pool's | |
| 209 static ChunkPool* large_pool() { assert(_large_pool != NULL, "must be initialized"); return _large_pool; } | |
| 210 static ChunkPool* medium_pool() { assert(_medium_pool != NULL, "must be initialized"); return _medium_pool; } | |
| 211 static ChunkPool* small_pool() { assert(_small_pool != NULL, "must be initialized"); return _small_pool; } | |
| 212 | |
| 213 static void initialize() { | |
| 214 _large_pool = new ChunkPool(Chunk::size + Chunk::aligned_overhead_size()); | |
| 215 _medium_pool = new ChunkPool(Chunk::medium_size + Chunk::aligned_overhead_size()); | |
| 216 _small_pool = new ChunkPool(Chunk::init_size + Chunk::aligned_overhead_size()); | |
| 217 } | |
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218 |
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219 static void clean() { |
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220 enum { BlocksToKeep = 5 }; |
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221 _small_pool->free_all_but(BlocksToKeep); |
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222 _medium_pool->free_all_but(BlocksToKeep); |
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223 _large_pool->free_all_but(BlocksToKeep); |
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224 } |
| 0 | 225 }; |
| 226 | |
| 227 ChunkPool* ChunkPool::_large_pool = NULL; | |
| 228 ChunkPool* ChunkPool::_medium_pool = NULL; | |
| 229 ChunkPool* ChunkPool::_small_pool = NULL; | |
| 230 | |
| 231 void chunkpool_init() { | |
| 232 ChunkPool::initialize(); | |
| 233 } | |
| 234 | |
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235 void |
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236 Chunk::clean_chunk_pool() { |
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237 ChunkPool::clean(); |
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238 } |
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239 |
| 0 | 240 |
| 241 //-------------------------------------------------------------------------------------- | |
| 242 // ChunkPoolCleaner implementation | |
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243 // |
| 0 | 244 |
| 245 class ChunkPoolCleaner : public PeriodicTask { | |
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246 enum { CleaningInterval = 5000 }; // cleaning interval in ms |
| 0 | 247 |
| 248 public: | |
| 249 ChunkPoolCleaner() : PeriodicTask(CleaningInterval) {} | |
| 250 void task() { | |
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251 ChunkPool::clean(); |
| 0 | 252 } |
| 253 }; | |
| 254 | |
| 255 //-------------------------------------------------------------------------------------- | |
| 256 // Chunk implementation | |
| 257 | |
| 258 void* Chunk::operator new(size_t requested_size, size_t length) { | |
| 259 // requested_size is equal to sizeof(Chunk) but in order for the arena | |
| 260 // allocations to come out aligned as expected the size must be aligned | |
| 261 // to expected arean alignment. | |
| 262 // expect requested_size but if sizeof(Chunk) doesn't match isn't proper size we must align it. | |
| 263 assert(ARENA_ALIGN(requested_size) == aligned_overhead_size(), "Bad alignment"); | |
| 264 size_t bytes = ARENA_ALIGN(requested_size) + length; | |
| 265 switch (length) { | |
| 266 case Chunk::size: return ChunkPool::large_pool()->allocate(bytes); | |
| 267 case Chunk::medium_size: return ChunkPool::medium_pool()->allocate(bytes); | |
| 268 case Chunk::init_size: return ChunkPool::small_pool()->allocate(bytes); | |
| 269 default: { | |
| 270 void *p = os::malloc(bytes); | |
| 271 if (p == NULL) | |
| 272 vm_exit_out_of_memory(bytes, "Chunk::new"); | |
| 273 return p; | |
| 274 } | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 void Chunk::operator delete(void* p) { | |
| 279 Chunk* c = (Chunk*)p; | |
| 280 switch (c->length()) { | |
| 281 case Chunk::size: ChunkPool::large_pool()->free(c); break; | |
| 282 case Chunk::medium_size: ChunkPool::medium_pool()->free(c); break; | |
| 283 case Chunk::init_size: ChunkPool::small_pool()->free(c); break; | |
| 284 default: os::free(c); | |
| 285 } | |
| 286 } | |
| 287 | |
| 288 Chunk::Chunk(size_t length) : _len(length) { | |
| 289 _next = NULL; // Chain on the linked list | |
| 290 } | |
| 291 | |
| 292 | |
| 293 void Chunk::chop() { | |
| 294 Chunk *k = this; | |
| 295 while( k ) { | |
| 296 Chunk *tmp = k->next(); | |
| 297 // clear out this chunk (to detect allocation bugs) | |
| 298 if (ZapResourceArea) memset(k->bottom(), badResourceValue, k->length()); | |
| 299 delete k; // Free chunk (was malloc'd) | |
| 300 k = tmp; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 void Chunk::next_chop() { | |
| 305 _next->chop(); | |
| 306 _next = NULL; | |
| 307 } | |
| 308 | |
| 309 | |
| 310 void Chunk::start_chunk_pool_cleaner_task() { | |
| 311 #ifdef ASSERT | |
| 312 static bool task_created = false; | |
| 313 assert(!task_created, "should not start chuck pool cleaner twice"); | |
| 314 task_created = true; | |
| 315 #endif | |
| 316 ChunkPoolCleaner* cleaner = new ChunkPoolCleaner(); | |
| 317 cleaner->enroll(); | |
| 318 } | |
| 319 | |
| 320 //------------------------------Arena------------------------------------------ | |
| 321 | |
| 322 Arena::Arena(size_t init_size) { | |
| 323 size_t round_size = (sizeof (char *)) - 1; | |
| 324 init_size = (init_size+round_size) & ~round_size; | |
| 325 _first = _chunk = new (init_size) Chunk(init_size); | |
| 326 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
| 327 _max = _chunk->top(); | |
| 328 set_size_in_bytes(init_size); | |
| 329 } | |
| 330 | |
| 331 Arena::Arena() { | |
| 332 _first = _chunk = new (Chunk::init_size) Chunk(Chunk::init_size); | |
| 333 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
| 334 _max = _chunk->top(); | |
| 335 set_size_in_bytes(Chunk::init_size); | |
| 336 } | |
| 337 | |
| 338 Arena::Arena(Arena *a) : _chunk(a->_chunk), _hwm(a->_hwm), _max(a->_max), _first(a->_first) { | |
| 339 set_size_in_bytes(a->size_in_bytes()); | |
| 340 } | |
| 341 | |
| 342 Arena *Arena::move_contents(Arena *copy) { | |
| 343 copy->destruct_contents(); | |
| 344 copy->_chunk = _chunk; | |
| 345 copy->_hwm = _hwm; | |
| 346 copy->_max = _max; | |
| 347 copy->_first = _first; | |
| 348 copy->set_size_in_bytes(size_in_bytes()); | |
| 349 // Destroy original arena | |
| 350 reset(); | |
| 351 return copy; // Return Arena with contents | |
| 352 } | |
| 353 | |
| 354 Arena::~Arena() { | |
| 355 destruct_contents(); | |
| 356 } | |
| 357 | |
| 358 // Destroy this arenas contents and reset to empty | |
| 359 void Arena::destruct_contents() { | |
| 360 if (UseMallocOnly && _first != NULL) { | |
| 361 char* end = _first->next() ? _first->top() : _hwm; | |
| 362 free_malloced_objects(_first, _first->bottom(), end, _hwm); | |
| 363 } | |
| 364 _first->chop(); | |
| 365 reset(); | |
| 366 } | |
| 367 | |
| 368 | |
| 369 // Total of all Chunks in arena | |
| 370 size_t Arena::used() const { | |
| 371 size_t sum = _chunk->length() - (_max-_hwm); // Size leftover in this Chunk | |
| 372 register Chunk *k = _first; | |
| 373 while( k != _chunk) { // Whilst have Chunks in a row | |
| 374 sum += k->length(); // Total size of this Chunk | |
| 375 k = k->next(); // Bump along to next Chunk | |
| 376 } | |
| 377 return sum; // Return total consumed space. | |
| 378 } | |
| 379 | |
| 380 | |
| 381 // Grow a new Chunk | |
| 382 void* Arena::grow( size_t x ) { | |
| 383 // Get minimal required size. Either real big, or even bigger for giant objs | |
| 384 size_t len = MAX2(x, (size_t) Chunk::size); | |
| 385 | |
| 386 Chunk *k = _chunk; // Get filled-up chunk address | |
| 387 _chunk = new (len) Chunk(len); | |
| 388 | |
| 389 if (_chunk == NULL) | |
| 390 vm_exit_out_of_memory(len * Chunk::aligned_overhead_size(), "Arena::grow"); | |
| 391 | |
| 392 if (k) k->set_next(_chunk); // Append new chunk to end of linked list | |
| 393 else _first = _chunk; | |
| 394 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
| 395 _max = _chunk->top(); | |
| 396 set_size_in_bytes(size_in_bytes() + len); | |
| 397 void* result = _hwm; | |
| 398 _hwm += x; | |
| 399 return result; | |
| 400 } | |
| 401 | |
| 402 | |
| 403 | |
| 404 // Reallocate storage in Arena. | |
| 405 void *Arena::Arealloc(void* old_ptr, size_t old_size, size_t new_size) { | |
| 406 assert(new_size >= 0, "bad size"); | |
| 407 if (new_size == 0) return NULL; | |
| 408 #ifdef ASSERT | |
| 409 if (UseMallocOnly) { | |
| 410 // always allocate a new object (otherwise we'll free this one twice) | |
| 411 char* copy = (char*)Amalloc(new_size); | |
| 412 size_t n = MIN2(old_size, new_size); | |
| 413 if (n > 0) memcpy(copy, old_ptr, n); | |
| 414 Afree(old_ptr,old_size); // Mostly done to keep stats accurate | |
| 415 return copy; | |
| 416 } | |
| 417 #endif | |
| 418 char *c_old = (char*)old_ptr; // Handy name | |
| 419 // Stupid fast special case | |
| 420 if( new_size <= old_size ) { // Shrink in-place | |
| 421 if( c_old+old_size == _hwm) // Attempt to free the excess bytes | |
| 422 _hwm = c_old+new_size; // Adjust hwm | |
| 423 return c_old; | |
| 424 } | |
| 425 | |
| 426 // make sure that new_size is legal | |
| 427 size_t corrected_new_size = ARENA_ALIGN(new_size); | |
| 428 | |
| 429 // See if we can resize in-place | |
| 430 if( (c_old+old_size == _hwm) && // Adjusting recent thing | |
| 431 (c_old+corrected_new_size <= _max) ) { // Still fits where it sits | |
| 432 _hwm = c_old+corrected_new_size; // Adjust hwm | |
| 433 return c_old; // Return old pointer | |
| 434 } | |
| 435 | |
| 436 // Oops, got to relocate guts | |
| 437 void *new_ptr = Amalloc(new_size); | |
| 438 memcpy( new_ptr, c_old, old_size ); | |
| 439 Afree(c_old,old_size); // Mostly done to keep stats accurate | |
| 440 return new_ptr; | |
| 441 } | |
| 442 | |
| 443 | |
| 444 // Determine if pointer belongs to this Arena or not. | |
| 445 bool Arena::contains( const void *ptr ) const { | |
| 446 #ifdef ASSERT | |
| 447 if (UseMallocOnly) { | |
| 448 // really slow, but not easy to make fast | |
| 449 if (_chunk == NULL) return false; | |
| 450 char** bottom = (char**)_chunk->bottom(); | |
| 451 for (char** p = (char**)_hwm - 1; p >= bottom; p--) { | |
| 452 if (*p == ptr) return true; | |
| 453 } | |
| 454 for (Chunk *c = _first; c != NULL; c = c->next()) { | |
| 455 if (c == _chunk) continue; // current chunk has been processed | |
| 456 char** bottom = (char**)c->bottom(); | |
| 457 for (char** p = (char**)c->top() - 1; p >= bottom; p--) { | |
| 458 if (*p == ptr) return true; | |
| 459 } | |
| 460 } | |
| 461 return false; | |
| 462 } | |
| 463 #endif | |
| 464 if( (void*)_chunk->bottom() <= ptr && ptr < (void*)_hwm ) | |
| 465 return true; // Check for in this chunk | |
| 466 for (Chunk *c = _first; c; c = c->next()) { | |
| 467 if (c == _chunk) continue; // current chunk has been processed | |
| 468 if ((void*)c->bottom() <= ptr && ptr < (void*)c->top()) { | |
| 469 return true; // Check for every chunk in Arena | |
| 470 } | |
| 471 } | |
| 472 return false; // Not in any Chunk, so not in Arena | |
| 473 } | |
| 474 | |
| 475 | |
| 476 #ifdef ASSERT | |
| 477 void* Arena::malloc(size_t size) { | |
| 478 assert(UseMallocOnly, "shouldn't call"); | |
| 479 // use malloc, but save pointer in res. area for later freeing | |
| 480 char** save = (char**)internal_malloc_4(sizeof(char*)); | |
| 481 return (*save = (char*)os::malloc(size)); | |
| 482 } | |
| 483 | |
| 484 // for debugging with UseMallocOnly | |
| 485 void* Arena::internal_malloc_4(size_t x) { | |
| 486 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); | |
| 487 if (_hwm + x > _max) { | |
| 488 return grow(x); | |
| 489 } else { | |
| 490 char *old = _hwm; | |
| 491 _hwm += x; | |
| 492 return old; | |
| 493 } | |
| 494 } | |
| 495 #endif | |
| 496 | |
| 497 | |
| 498 //-------------------------------------------------------------------------------------- | |
| 499 // Non-product code | |
| 500 | |
| 501 #ifndef PRODUCT | |
| 502 // The global operator new should never be called since it will usually indicate | |
| 503 // a memory leak. Use CHeapObj as the base class of such objects to make it explicit | |
| 504 // that they're allocated on the C heap. | |
| 505 // Commented out in product version to avoid conflicts with third-party C++ native code. | |
| 506 // %% note this is causing a problem on solaris debug build. the global | |
| 507 // new is being called from jdk source and causing data corruption. | |
| 508 // src/share/native/sun/awt/font/fontmanager/textcache/hsMemory.cpp::hsSoftNew | |
| 509 // define CATCH_OPERATOR_NEW_USAGE if you want to use this. | |
| 510 #ifdef CATCH_OPERATOR_NEW_USAGE | |
| 511 void* operator new(size_t size){ | |
| 512 static bool warned = false; | |
| 513 if (!warned && warn_new_operator) | |
| 514 warning("should not call global (default) operator new"); | |
| 515 warned = true; | |
| 516 return (void *) AllocateHeap(size, "global operator new"); | |
| 517 } | |
| 518 #endif | |
| 519 | |
| 520 void AllocatedObj::print() const { print_on(tty); } | |
| 521 void AllocatedObj::print_value() const { print_value_on(tty); } | |
| 522 | |
| 523 void AllocatedObj::print_on(outputStream* st) const { | |
| 524 st->print_cr("AllocatedObj(" INTPTR_FORMAT ")", this); | |
| 525 } | |
| 526 | |
| 527 void AllocatedObj::print_value_on(outputStream* st) const { | |
| 528 st->print("AllocatedObj(" INTPTR_FORMAT ")", this); | |
| 529 } | |
| 530 | |
| 531 size_t Arena::_bytes_allocated = 0; | |
| 532 | |
| 533 AllocStats::AllocStats() { | |
| 534 start_mallocs = os::num_mallocs; | |
| 535 start_frees = os::num_frees; | |
| 536 start_malloc_bytes = os::alloc_bytes; | |
| 537 start_res_bytes = Arena::_bytes_allocated; | |
| 538 } | |
| 539 | |
| 540 int AllocStats::num_mallocs() { return os::num_mallocs - start_mallocs; } | |
| 541 size_t AllocStats::alloc_bytes() { return os::alloc_bytes - start_malloc_bytes; } | |
| 542 size_t AllocStats::resource_bytes() { return Arena::_bytes_allocated - start_res_bytes; } | |
| 543 int AllocStats::num_frees() { return os::num_frees - start_frees; } | |
| 544 void AllocStats::print() { | |
| 545 tty->print("%d mallocs (%ldK), %d frees, %ldK resrc", | |
| 546 num_mallocs(), alloc_bytes()/K, num_frees(), resource_bytes()/K); | |
| 547 } | |
| 548 | |
| 549 | |
| 550 // debugging code | |
| 551 inline void Arena::free_all(char** start, char** end) { | |
| 552 for (char** p = start; p < end; p++) if (*p) os::free(*p); | |
| 553 } | |
| 554 | |
| 555 void Arena::free_malloced_objects(Chunk* chunk, char* hwm, char* max, char* hwm2) { | |
| 556 assert(UseMallocOnly, "should not call"); | |
| 557 // free all objects malloced since resource mark was created; resource area | |
| 558 // contains their addresses | |
| 559 if (chunk->next()) { | |
| 560 // this chunk is full, and some others too | |
| 561 for (Chunk* c = chunk->next(); c != NULL; c = c->next()) { | |
| 562 char* top = c->top(); | |
| 563 if (c->next() == NULL) { | |
| 564 top = hwm2; // last junk is only used up to hwm2 | |
| 565 assert(c->contains(hwm2), "bad hwm2"); | |
| 566 } | |
| 567 free_all((char**)c->bottom(), (char**)top); | |
| 568 } | |
| 569 assert(chunk->contains(hwm), "bad hwm"); | |
| 570 assert(chunk->contains(max), "bad max"); | |
| 571 free_all((char**)hwm, (char**)max); | |
| 572 } else { | |
| 573 // this chunk was partially used | |
| 574 assert(chunk->contains(hwm), "bad hwm"); | |
| 575 assert(chunk->contains(hwm2), "bad hwm2"); | |
| 576 free_all((char**)hwm, (char**)hwm2); | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 | |
| 581 ReallocMark::ReallocMark() { | |
| 582 #ifdef ASSERT | |
| 583 Thread *thread = ThreadLocalStorage::get_thread_slow(); | |
| 584 _nesting = thread->resource_area()->nesting(); | |
| 585 #endif | |
| 586 } | |
| 587 | |
| 588 void ReallocMark::check() { | |
| 589 #ifdef ASSERT | |
| 590 if (_nesting != Thread::current()->resource_area()->nesting()) { | |
| 591 fatal("allocation bug: array could grow within nested ResourceMark"); | |
| 592 } | |
| 593 #endif | |
| 594 } | |
| 595 | |
| 596 #endif // Non-product |