Mercurial > hg > truffle
annotate src/share/vm/memory/allocation.cpp @ 3974:114e52976463
7045232: G1: pool names are inconsistent with other collectors (don't have 'Space')
Summary: Make sure the eden and survivor pools have "Space" in their name.
Reviewed-by: jmasa, ysr
author | tonyp |
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date | Wed, 21 Sep 2011 01:27:20 -0400 |
parents | 2a3da7eaf4a6 |
children | f08d439fab8c |
rev | line source |
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0 | 1 /* |
2250 | 2 * Copyright (c) 1997, 2011, 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 #include "precompiled.hpp" |
26 #include "memory/allocation.hpp" | |
27 #include "memory/allocation.inline.hpp" | |
28 #include "memory/resourceArea.hpp" | |
29 #include "runtime/os.hpp" | |
30 #include "runtime/task.hpp" | |
31 #include "runtime/threadCritical.hpp" | |
32 #include "utilities/ostream.hpp" | |
33 #ifdef TARGET_OS_FAMILY_linux | |
34 # include "os_linux.inline.hpp" | |
35 #endif | |
36 #ifdef TARGET_OS_FAMILY_solaris | |
37 # include "os_solaris.inline.hpp" | |
38 #endif | |
39 #ifdef TARGET_OS_FAMILY_windows | |
40 # include "os_windows.inline.hpp" | |
41 #endif | |
0 | 42 |
43 void* CHeapObj::operator new(size_t size){ | |
44 return (void *) AllocateHeap(size, "CHeapObj-new"); | |
45 } | |
46 | |
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47 void* CHeapObj::operator new (size_t size, const std::nothrow_t& nothrow_constant) { |
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48 char* p = (char*) os::malloc(size); |
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49 #ifdef ASSERT |
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50 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p); |
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51 #endif |
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52 return p; |
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53 } |
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54 |
0 | 55 void CHeapObj::operator delete(void* p){ |
56 FreeHeap(p); | |
57 } | |
58 | |
59 void* StackObj::operator new(size_t size) { ShouldNotCallThis(); return 0; }; | |
60 void StackObj::operator delete(void* p) { ShouldNotCallThis(); }; | |
61 void* _ValueObj::operator new(size_t size) { ShouldNotCallThis(); return 0; }; | |
62 void _ValueObj::operator delete(void* p) { ShouldNotCallThis(); }; | |
63 | |
64 void* ResourceObj::operator new(size_t size, allocation_type type) { | |
65 address res; | |
66 switch (type) { | |
67 case C_HEAP: | |
68 res = (address)AllocateHeap(size, "C_Heap: ResourceOBJ"); | |
1685 | 69 DEBUG_ONLY(set_allocation_type(res, C_HEAP);) |
0 | 70 break; |
71 case RESOURCE_AREA: | |
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72 // new(size) sets allocation type RESOURCE_AREA. |
0 | 73 res = (address)operator new(size); |
74 break; | |
75 default: | |
76 ShouldNotReachHere(); | |
77 } | |
78 return res; | |
79 } | |
80 | |
81 void ResourceObj::operator delete(void* p) { | |
82 assert(((ResourceObj *)p)->allocated_on_C_heap(), | |
83 "delete only allowed for C_HEAP objects"); | |
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84 DEBUG_ONLY(((ResourceObj *)p)->_allocation_t[0] = (uintptr_t)badHeapOopVal;) |
0 | 85 FreeHeap(p); |
86 } | |
87 | |
1685 | 88 #ifdef ASSERT |
89 void ResourceObj::set_allocation_type(address res, allocation_type type) { | |
90 // Set allocation type in the resource object | |
91 uintptr_t allocation = (uintptr_t)res; | |
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92 assert((allocation & allocation_mask) == 0, "address should be aligned to 4 bytes at least"); |
1685 | 93 assert(type <= allocation_mask, "incorrect allocation type"); |
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94 ResourceObj* resobj = (ResourceObj *)res; |
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95 resobj->_allocation_t[0] = ~(allocation + type); |
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96 if (type != STACK_OR_EMBEDDED) { |
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97 // Called from operator new() and CollectionSetChooser(), |
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98 // set verification value. |
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99 resobj->_allocation_t[1] = (uintptr_t)&(resobj->_allocation_t[1]) + type; |
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100 } |
1685 | 101 } |
102 | |
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103 ResourceObj::allocation_type ResourceObj::get_allocation_type() const { |
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104 assert(~(_allocation_t[0] | allocation_mask) == (uintptr_t)this, "lost resource object"); |
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105 return (allocation_type)((~_allocation_t[0]) & allocation_mask); |
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106 } |
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107 |
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108 bool ResourceObj::is_type_set() const { |
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109 allocation_type type = (allocation_type)(_allocation_t[1] & allocation_mask); |
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110 return get_allocation_type() == type && |
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111 (_allocation_t[1] - type) == (uintptr_t)(&_allocation_t[1]); |
1685 | 112 } |
113 | |
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114 ResourceObj::ResourceObj() { // default constructor |
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115 if (~(_allocation_t[0] | allocation_mask) != (uintptr_t)this) { |
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116 // Operator new() is not called for allocations |
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117 // on stack and for embedded objects. |
1685 | 118 set_allocation_type((address)this, STACK_OR_EMBEDDED); |
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119 } else if (allocated_on_stack()) { // STACK_OR_EMBEDDED |
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120 // For some reason we got a value which resembles |
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121 // an embedded or stack object (operator new() does not |
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122 // set such type). Keep it since it is valid value |
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123 // (even if it was garbage). |
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124 // Ignore garbage in other fields. |
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125 } else if (is_type_set()) { |
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126 // Operator new() was called and type was set. |
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127 assert(!allocated_on_stack(), |
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128 err_msg("not embedded or stack, this(" PTR_FORMAT ") type %d a[0]=(" PTR_FORMAT ") a[1]=(" PTR_FORMAT ")", |
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129 this, get_allocation_type(), _allocation_t[0], _allocation_t[1])); |
1685 | 130 } else { |
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131 // Operator new() was not called. |
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132 // Assume that it is embedded or stack object. |
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133 set_allocation_type((address)this, STACK_OR_EMBEDDED); |
1685 | 134 } |
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135 _allocation_t[1] = 0; // Zap verification value |
1685 | 136 } |
137 | |
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138 ResourceObj::ResourceObj(const ResourceObj& r) { // default copy constructor |
1685 | 139 // Used in ClassFileParser::parse_constant_pool_entries() for ClassFileStream. |
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140 // Note: garbage may resembles valid value. |
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141 assert(~(_allocation_t[0] | allocation_mask) != (uintptr_t)this || !is_type_set(), |
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142 err_msg("embedded or stack only, this(" PTR_FORMAT ") type %d a[0]=(" PTR_FORMAT ") a[1]=(" PTR_FORMAT ")", |
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143 this, get_allocation_type(), _allocation_t[0], _allocation_t[1])); |
1685 | 144 set_allocation_type((address)this, STACK_OR_EMBEDDED); |
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145 _allocation_t[1] = 0; // Zap verification value |
1685 | 146 } |
147 | |
148 ResourceObj& ResourceObj::operator=(const ResourceObj& r) { // default copy assignment | |
149 // Used in InlineTree::ok_to_inline() for WarmCallInfo. | |
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150 assert(allocated_on_stack(), |
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151 err_msg("copy only into local, this(" PTR_FORMAT ") type %d a[0]=(" PTR_FORMAT ") a[1]=(" PTR_FORMAT ")", |
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152 this, get_allocation_type(), _allocation_t[0], _allocation_t[1])); |
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153 // Keep current _allocation_t value; |
1685 | 154 return *this; |
155 } | |
156 | |
157 ResourceObj::~ResourceObj() { | |
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158 // allocated_on_C_heap() also checks that encoded (in _allocation) address == this. |
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159 if (!allocated_on_C_heap()) { // ResourceObj::delete() will zap _allocation for C_heap. |
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160 _allocation_t[0] = (uintptr_t)badHeapOopVal; // zap type |
1685 | 161 } |
162 } | |
163 #endif // ASSERT | |
164 | |
165 | |
0 | 166 void trace_heap_malloc(size_t size, const char* name, void* p) { |
167 // A lock is not needed here - tty uses a lock internally | |
2250 | 168 tty->print_cr("Heap malloc " INTPTR_FORMAT " " SIZE_FORMAT " %s", p, size, name == NULL ? "" : name); |
0 | 169 } |
170 | |
171 | |
172 void trace_heap_free(void* p) { | |
173 // A lock is not needed here - tty uses a lock internally | |
174 tty->print_cr("Heap free " INTPTR_FORMAT, p); | |
175 } | |
176 | |
177 bool warn_new_operator = false; // see vm_main | |
178 | |
179 //-------------------------------------------------------------------------------------- | |
180 // ChunkPool implementation | |
181 | |
182 // MT-safe pool of chunks to reduce malloc/free thrashing | |
183 // NB: not using Mutex because pools are used before Threads are initialized | |
184 class ChunkPool { | |
185 Chunk* _first; // first cached Chunk; its first word points to next chunk | |
186 size_t _num_chunks; // number of unused chunks in pool | |
187 size_t _num_used; // number of chunks currently checked out | |
188 const size_t _size; // size of each chunk (must be uniform) | |
189 | |
190 // Our three static pools | |
191 static ChunkPool* _large_pool; | |
192 static ChunkPool* _medium_pool; | |
193 static ChunkPool* _small_pool; | |
194 | |
195 // return first element or null | |
196 void* get_first() { | |
197 Chunk* c = _first; | |
198 if (_first) { | |
199 _first = _first->next(); | |
200 _num_chunks--; | |
201 } | |
202 return c; | |
203 } | |
204 | |
205 public: | |
206 // All chunks in a ChunkPool has the same size | |
207 ChunkPool(size_t size) : _size(size) { _first = NULL; _num_chunks = _num_used = 0; } | |
208 | |
209 // Allocate a new chunk from the pool (might expand the pool) | |
210 void* allocate(size_t bytes) { | |
211 assert(bytes == _size, "bad size"); | |
212 void* p = NULL; | |
213 { ThreadCritical tc; | |
214 _num_used++; | |
215 p = get_first(); | |
216 if (p == NULL) p = os::malloc(bytes); | |
217 } | |
218 if (p == NULL) | |
219 vm_exit_out_of_memory(bytes, "ChunkPool::allocate"); | |
220 | |
221 return p; | |
222 } | |
223 | |
224 // Return a chunk to the pool | |
225 void free(Chunk* chunk) { | |
226 assert(chunk->length() + Chunk::aligned_overhead_size() == _size, "bad size"); | |
227 ThreadCritical tc; | |
228 _num_used--; | |
229 | |
230 // Add chunk to list | |
231 chunk->set_next(_first); | |
232 _first = chunk; | |
233 _num_chunks++; | |
234 } | |
235 | |
236 // Prune the pool | |
237 void free_all_but(size_t n) { | |
238 // if we have more than n chunks, free all of them | |
239 ThreadCritical tc; | |
240 if (_num_chunks > n) { | |
241 // free chunks at end of queue, for better locality | |
242 Chunk* cur = _first; | |
243 for (size_t i = 0; i < (n - 1) && cur != NULL; i++) cur = cur->next(); | |
244 | |
245 if (cur != NULL) { | |
246 Chunk* next = cur->next(); | |
247 cur->set_next(NULL); | |
248 cur = next; | |
249 | |
250 // Free all remaining chunks | |
251 while(cur != NULL) { | |
252 next = cur->next(); | |
253 os::free(cur); | |
254 _num_chunks--; | |
255 cur = next; | |
256 } | |
257 } | |
258 } | |
259 } | |
260 | |
261 // Accessors to preallocated pool's | |
262 static ChunkPool* large_pool() { assert(_large_pool != NULL, "must be initialized"); return _large_pool; } | |
263 static ChunkPool* medium_pool() { assert(_medium_pool != NULL, "must be initialized"); return _medium_pool; } | |
264 static ChunkPool* small_pool() { assert(_small_pool != NULL, "must be initialized"); return _small_pool; } | |
265 | |
266 static void initialize() { | |
267 _large_pool = new ChunkPool(Chunk::size + Chunk::aligned_overhead_size()); | |
268 _medium_pool = new ChunkPool(Chunk::medium_size + Chunk::aligned_overhead_size()); | |
269 _small_pool = new ChunkPool(Chunk::init_size + Chunk::aligned_overhead_size()); | |
270 } | |
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271 |
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272 static void clean() { |
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273 enum { BlocksToKeep = 5 }; |
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274 _small_pool->free_all_but(BlocksToKeep); |
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275 _medium_pool->free_all_but(BlocksToKeep); |
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276 _large_pool->free_all_but(BlocksToKeep); |
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277 } |
0 | 278 }; |
279 | |
280 ChunkPool* ChunkPool::_large_pool = NULL; | |
281 ChunkPool* ChunkPool::_medium_pool = NULL; | |
282 ChunkPool* ChunkPool::_small_pool = NULL; | |
283 | |
284 void chunkpool_init() { | |
285 ChunkPool::initialize(); | |
286 } | |
287 | |
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288 void |
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289 Chunk::clean_chunk_pool() { |
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290 ChunkPool::clean(); |
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291 } |
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292 |
0 | 293 |
294 //-------------------------------------------------------------------------------------- | |
295 // ChunkPoolCleaner implementation | |
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296 // |
0 | 297 |
298 class ChunkPoolCleaner : public PeriodicTask { | |
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299 enum { CleaningInterval = 5000 }; // cleaning interval in ms |
0 | 300 |
301 public: | |
302 ChunkPoolCleaner() : PeriodicTask(CleaningInterval) {} | |
303 void task() { | |
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304 ChunkPool::clean(); |
0 | 305 } |
306 }; | |
307 | |
308 //-------------------------------------------------------------------------------------- | |
309 // Chunk implementation | |
310 | |
311 void* Chunk::operator new(size_t requested_size, size_t length) { | |
312 // requested_size is equal to sizeof(Chunk) but in order for the arena | |
313 // allocations to come out aligned as expected the size must be aligned | |
314 // to expected arean alignment. | |
315 // expect requested_size but if sizeof(Chunk) doesn't match isn't proper size we must align it. | |
316 assert(ARENA_ALIGN(requested_size) == aligned_overhead_size(), "Bad alignment"); | |
317 size_t bytes = ARENA_ALIGN(requested_size) + length; | |
318 switch (length) { | |
319 case Chunk::size: return ChunkPool::large_pool()->allocate(bytes); | |
320 case Chunk::medium_size: return ChunkPool::medium_pool()->allocate(bytes); | |
321 case Chunk::init_size: return ChunkPool::small_pool()->allocate(bytes); | |
322 default: { | |
323 void *p = os::malloc(bytes); | |
324 if (p == NULL) | |
325 vm_exit_out_of_memory(bytes, "Chunk::new"); | |
326 return p; | |
327 } | |
328 } | |
329 } | |
330 | |
331 void Chunk::operator delete(void* p) { | |
332 Chunk* c = (Chunk*)p; | |
333 switch (c->length()) { | |
334 case Chunk::size: ChunkPool::large_pool()->free(c); break; | |
335 case Chunk::medium_size: ChunkPool::medium_pool()->free(c); break; | |
336 case Chunk::init_size: ChunkPool::small_pool()->free(c); break; | |
337 default: os::free(c); | |
338 } | |
339 } | |
340 | |
341 Chunk::Chunk(size_t length) : _len(length) { | |
342 _next = NULL; // Chain on the linked list | |
343 } | |
344 | |
345 | |
346 void Chunk::chop() { | |
347 Chunk *k = this; | |
348 while( k ) { | |
349 Chunk *tmp = k->next(); | |
350 // clear out this chunk (to detect allocation bugs) | |
351 if (ZapResourceArea) memset(k->bottom(), badResourceValue, k->length()); | |
352 delete k; // Free chunk (was malloc'd) | |
353 k = tmp; | |
354 } | |
355 } | |
356 | |
357 void Chunk::next_chop() { | |
358 _next->chop(); | |
359 _next = NULL; | |
360 } | |
361 | |
362 | |
363 void Chunk::start_chunk_pool_cleaner_task() { | |
364 #ifdef ASSERT | |
365 static bool task_created = false; | |
366 assert(!task_created, "should not start chuck pool cleaner twice"); | |
367 task_created = true; | |
368 #endif | |
369 ChunkPoolCleaner* cleaner = new ChunkPoolCleaner(); | |
370 cleaner->enroll(); | |
371 } | |
372 | |
373 //------------------------------Arena------------------------------------------ | |
374 | |
375 Arena::Arena(size_t init_size) { | |
376 size_t round_size = (sizeof (char *)) - 1; | |
377 init_size = (init_size+round_size) & ~round_size; | |
378 _first = _chunk = new (init_size) Chunk(init_size); | |
379 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
380 _max = _chunk->top(); | |
381 set_size_in_bytes(init_size); | |
382 } | |
383 | |
384 Arena::Arena() { | |
385 _first = _chunk = new (Chunk::init_size) Chunk(Chunk::init_size); | |
386 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
387 _max = _chunk->top(); | |
388 set_size_in_bytes(Chunk::init_size); | |
389 } | |
390 | |
391 Arena::Arena(Arena *a) : _chunk(a->_chunk), _hwm(a->_hwm), _max(a->_max), _first(a->_first) { | |
392 set_size_in_bytes(a->size_in_bytes()); | |
393 } | |
394 | |
395 Arena *Arena::move_contents(Arena *copy) { | |
396 copy->destruct_contents(); | |
397 copy->_chunk = _chunk; | |
398 copy->_hwm = _hwm; | |
399 copy->_max = _max; | |
400 copy->_first = _first; | |
401 copy->set_size_in_bytes(size_in_bytes()); | |
402 // Destroy original arena | |
403 reset(); | |
404 return copy; // Return Arena with contents | |
405 } | |
406 | |
407 Arena::~Arena() { | |
408 destruct_contents(); | |
409 } | |
410 | |
411 // Destroy this arenas contents and reset to empty | |
412 void Arena::destruct_contents() { | |
413 if (UseMallocOnly && _first != NULL) { | |
414 char* end = _first->next() ? _first->top() : _hwm; | |
415 free_malloced_objects(_first, _first->bottom(), end, _hwm); | |
416 } | |
417 _first->chop(); | |
418 reset(); | |
419 } | |
420 | |
421 | |
422 // Total of all Chunks in arena | |
423 size_t Arena::used() const { | |
424 size_t sum = _chunk->length() - (_max-_hwm); // Size leftover in this Chunk | |
425 register Chunk *k = _first; | |
426 while( k != _chunk) { // Whilst have Chunks in a row | |
427 sum += k->length(); // Total size of this Chunk | |
428 k = k->next(); // Bump along to next Chunk | |
429 } | |
430 return sum; // Return total consumed space. | |
431 } | |
432 | |
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433 void Arena::signal_out_of_memory(size_t sz, const char* whence) const { |
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434 vm_exit_out_of_memory(sz, whence); |
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435 } |
0 | 436 |
437 // Grow a new Chunk | |
438 void* Arena::grow( size_t x ) { | |
439 // Get minimal required size. Either real big, or even bigger for giant objs | |
440 size_t len = MAX2(x, (size_t) Chunk::size); | |
441 | |
442 Chunk *k = _chunk; // Get filled-up chunk address | |
443 _chunk = new (len) Chunk(len); | |
444 | |
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445 if (_chunk == NULL) { |
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446 signal_out_of_memory(len * Chunk::aligned_overhead_size(), "Arena::grow"); |
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447 } |
0 | 448 |
449 if (k) k->set_next(_chunk); // Append new chunk to end of linked list | |
450 else _first = _chunk; | |
451 _hwm = _chunk->bottom(); // Save the cached hwm, max | |
452 _max = _chunk->top(); | |
453 set_size_in_bytes(size_in_bytes() + len); | |
454 void* result = _hwm; | |
455 _hwm += x; | |
456 return result; | |
457 } | |
458 | |
459 | |
460 | |
461 // Reallocate storage in Arena. | |
462 void *Arena::Arealloc(void* old_ptr, size_t old_size, size_t new_size) { | |
463 assert(new_size >= 0, "bad size"); | |
464 if (new_size == 0) return NULL; | |
465 #ifdef ASSERT | |
466 if (UseMallocOnly) { | |
467 // always allocate a new object (otherwise we'll free this one twice) | |
468 char* copy = (char*)Amalloc(new_size); | |
469 size_t n = MIN2(old_size, new_size); | |
470 if (n > 0) memcpy(copy, old_ptr, n); | |
471 Afree(old_ptr,old_size); // Mostly done to keep stats accurate | |
472 return copy; | |
473 } | |
474 #endif | |
475 char *c_old = (char*)old_ptr; // Handy name | |
476 // Stupid fast special case | |
477 if( new_size <= old_size ) { // Shrink in-place | |
478 if( c_old+old_size == _hwm) // Attempt to free the excess bytes | |
479 _hwm = c_old+new_size; // Adjust hwm | |
480 return c_old; | |
481 } | |
482 | |
483 // make sure that new_size is legal | |
484 size_t corrected_new_size = ARENA_ALIGN(new_size); | |
485 | |
486 // See if we can resize in-place | |
487 if( (c_old+old_size == _hwm) && // Adjusting recent thing | |
488 (c_old+corrected_new_size <= _max) ) { // Still fits where it sits | |
489 _hwm = c_old+corrected_new_size; // Adjust hwm | |
490 return c_old; // Return old pointer | |
491 } | |
492 | |
493 // Oops, got to relocate guts | |
494 void *new_ptr = Amalloc(new_size); | |
495 memcpy( new_ptr, c_old, old_size ); | |
496 Afree(c_old,old_size); // Mostly done to keep stats accurate | |
497 return new_ptr; | |
498 } | |
499 | |
500 | |
501 // Determine if pointer belongs to this Arena or not. | |
502 bool Arena::contains( const void *ptr ) const { | |
503 #ifdef ASSERT | |
504 if (UseMallocOnly) { | |
505 // really slow, but not easy to make fast | |
506 if (_chunk == NULL) return false; | |
507 char** bottom = (char**)_chunk->bottom(); | |
508 for (char** p = (char**)_hwm - 1; p >= bottom; p--) { | |
509 if (*p == ptr) return true; | |
510 } | |
511 for (Chunk *c = _first; c != NULL; c = c->next()) { | |
512 if (c == _chunk) continue; // current chunk has been processed | |
513 char** bottom = (char**)c->bottom(); | |
514 for (char** p = (char**)c->top() - 1; p >= bottom; p--) { | |
515 if (*p == ptr) return true; | |
516 } | |
517 } | |
518 return false; | |
519 } | |
520 #endif | |
521 if( (void*)_chunk->bottom() <= ptr && ptr < (void*)_hwm ) | |
522 return true; // Check for in this chunk | |
523 for (Chunk *c = _first; c; c = c->next()) { | |
524 if (c == _chunk) continue; // current chunk has been processed | |
525 if ((void*)c->bottom() <= ptr && ptr < (void*)c->top()) { | |
526 return true; // Check for every chunk in Arena | |
527 } | |
528 } | |
529 return false; // Not in any Chunk, so not in Arena | |
530 } | |
531 | |
532 | |
533 #ifdef ASSERT | |
534 void* Arena::malloc(size_t size) { | |
535 assert(UseMallocOnly, "shouldn't call"); | |
536 // use malloc, but save pointer in res. area for later freeing | |
537 char** save = (char**)internal_malloc_4(sizeof(char*)); | |
538 return (*save = (char*)os::malloc(size)); | |
539 } | |
540 | |
541 // for debugging with UseMallocOnly | |
542 void* Arena::internal_malloc_4(size_t x) { | |
543 assert( (x&(sizeof(char*)-1)) == 0, "misaligned size" ); | |
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544 check_for_overflow(x, "Arena::internal_malloc_4"); |
0 | 545 if (_hwm + x > _max) { |
546 return grow(x); | |
547 } else { | |
548 char *old = _hwm; | |
549 _hwm += x; | |
550 return old; | |
551 } | |
552 } | |
553 #endif | |
554 | |
555 | |
556 //-------------------------------------------------------------------------------------- | |
557 // Non-product code | |
558 | |
559 #ifndef PRODUCT | |
560 // The global operator new should never be called since it will usually indicate | |
561 // a memory leak. Use CHeapObj as the base class of such objects to make it explicit | |
562 // that they're allocated on the C heap. | |
563 // Commented out in product version to avoid conflicts with third-party C++ native code. | |
564 // %% note this is causing a problem on solaris debug build. the global | |
565 // new is being called from jdk source and causing data corruption. | |
566 // src/share/native/sun/awt/font/fontmanager/textcache/hsMemory.cpp::hsSoftNew | |
567 // define CATCH_OPERATOR_NEW_USAGE if you want to use this. | |
568 #ifdef CATCH_OPERATOR_NEW_USAGE | |
569 void* operator new(size_t size){ | |
570 static bool warned = false; | |
571 if (!warned && warn_new_operator) | |
572 warning("should not call global (default) operator new"); | |
573 warned = true; | |
574 return (void *) AllocateHeap(size, "global operator new"); | |
575 } | |
576 #endif | |
577 | |
578 void AllocatedObj::print() const { print_on(tty); } | |
579 void AllocatedObj::print_value() const { print_value_on(tty); } | |
580 | |
581 void AllocatedObj::print_on(outputStream* st) const { | |
582 st->print_cr("AllocatedObj(" INTPTR_FORMAT ")", this); | |
583 } | |
584 | |
585 void AllocatedObj::print_value_on(outputStream* st) const { | |
586 st->print("AllocatedObj(" INTPTR_FORMAT ")", this); | |
587 } | |
588 | |
2250 | 589 julong Arena::_bytes_allocated = 0; |
590 | |
591 void Arena::inc_bytes_allocated(size_t x) { inc_stat_counter(&_bytes_allocated, x); } | |
0 | 592 |
593 AllocStats::AllocStats() { | |
2250 | 594 start_mallocs = os::num_mallocs; |
595 start_frees = os::num_frees; | |
0 | 596 start_malloc_bytes = os::alloc_bytes; |
2250 | 597 start_mfree_bytes = os::free_bytes; |
598 start_res_bytes = Arena::_bytes_allocated; | |
0 | 599 } |
600 | |
2250 | 601 julong AllocStats::num_mallocs() { return os::num_mallocs - start_mallocs; } |
602 julong AllocStats::alloc_bytes() { return os::alloc_bytes - start_malloc_bytes; } | |
603 julong AllocStats::num_frees() { return os::num_frees - start_frees; } | |
604 julong AllocStats::free_bytes() { return os::free_bytes - start_mfree_bytes; } | |
605 julong AllocStats::resource_bytes() { return Arena::_bytes_allocated - start_res_bytes; } | |
0 | 606 void AllocStats::print() { |
2250 | 607 tty->print_cr(UINT64_FORMAT " mallocs (" UINT64_FORMAT "MB), " |
608 UINT64_FORMAT" frees (" UINT64_FORMAT "MB), " UINT64_FORMAT "MB resrc", | |
609 num_mallocs(), alloc_bytes()/M, num_frees(), free_bytes()/M, resource_bytes()/M); | |
0 | 610 } |
611 | |
612 | |
613 // debugging code | |
614 inline void Arena::free_all(char** start, char** end) { | |
615 for (char** p = start; p < end; p++) if (*p) os::free(*p); | |
616 } | |
617 | |
618 void Arena::free_malloced_objects(Chunk* chunk, char* hwm, char* max, char* hwm2) { | |
619 assert(UseMallocOnly, "should not call"); | |
620 // free all objects malloced since resource mark was created; resource area | |
621 // contains their addresses | |
622 if (chunk->next()) { | |
623 // this chunk is full, and some others too | |
624 for (Chunk* c = chunk->next(); c != NULL; c = c->next()) { | |
625 char* top = c->top(); | |
626 if (c->next() == NULL) { | |
627 top = hwm2; // last junk is only used up to hwm2 | |
628 assert(c->contains(hwm2), "bad hwm2"); | |
629 } | |
630 free_all((char**)c->bottom(), (char**)top); | |
631 } | |
632 assert(chunk->contains(hwm), "bad hwm"); | |
633 assert(chunk->contains(max), "bad max"); | |
634 free_all((char**)hwm, (char**)max); | |
635 } else { | |
636 // this chunk was partially used | |
637 assert(chunk->contains(hwm), "bad hwm"); | |
638 assert(chunk->contains(hwm2), "bad hwm2"); | |
639 free_all((char**)hwm, (char**)hwm2); | |
640 } | |
641 } | |
642 | |
643 | |
644 ReallocMark::ReallocMark() { | |
645 #ifdef ASSERT | |
646 Thread *thread = ThreadLocalStorage::get_thread_slow(); | |
647 _nesting = thread->resource_area()->nesting(); | |
648 #endif | |
649 } | |
650 | |
651 void ReallocMark::check() { | |
652 #ifdef ASSERT | |
653 if (_nesting != Thread::current()->resource_area()->nesting()) { | |
654 fatal("allocation bug: array could grow within nested ResourceMark"); | |
655 } | |
656 #endif | |
657 } | |
658 | |
659 #endif // Non-product |