Mercurial > hg > truffle
annotate src/share/vm/memory/binaryTreeDictionary.cpp @ 8791:47902e9acb3a
Merge
author | stefank |
---|---|
date | Fri, 22 Mar 2013 10:32:21 +0100 |
parents | 3c9bc17b9403 |
children | de88570fabfc |
rev | line source |
---|---|
0 | 1 /* |
6026 | 2 * Copyright (c) 2001, 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:
1489
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1489
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:
1489
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
26 #include "utilities/macros.hpp" |
1972 | 27 #include "gc_implementation/shared/allocationStats.hpp" |
6026 | 28 #include "memory/binaryTreeDictionary.hpp" |
6885 | 29 #include "memory/freeList.hpp" |
30 #include "memory/freeBlockDictionary.hpp" | |
31 #include "memory/metablock.hpp" | |
32 #include "memory/metachunk.hpp" | |
1972 | 33 #include "runtime/globals.hpp" |
34 #include "utilities/ostream.hpp" | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
35 #include "utilities/macros.hpp" |
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
36 #if INCLUDE_ALL_GCS |
6885 | 37 #include "gc_implementation/concurrentMarkSweep/adaptiveFreeList.hpp" |
38 #include "gc_implementation/concurrentMarkSweep/freeChunk.hpp" | |
6026 | 39 #include "gc_implementation/shared/spaceDecorator.hpp" |
40 #include "gc_implementation/concurrentMarkSweep/freeChunk.hpp" | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
41 #endif // INCLUDE_ALL_GCS |
0 | 42 |
43 //////////////////////////////////////////////////////////////////////////////// | |
44 // A binary tree based search structure for free blocks. | |
45 // This is currently used in the Concurrent Mark&Sweep implementation. | |
46 //////////////////////////////////////////////////////////////////////////////// | |
47 | |
6885 | 48 template <class Chunk_t, template <class> class FreeList_t> |
49 size_t TreeChunk<Chunk_t, FreeList_t>::_min_tree_chunk_size = sizeof(TreeChunk<Chunk_t, FreeList_t>)/HeapWordSize; | |
50 | |
51 template <class Chunk_t, template <class> class FreeList_t> | |
52 TreeChunk<Chunk_t, FreeList_t>* TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(Chunk_t* fc) { | |
0 | 53 // Do some assertion checking here. |
6885 | 54 return (TreeChunk<Chunk_t, FreeList_t>*) fc; |
0 | 55 } |
56 | |
6885 | 57 template <class Chunk_t, template <class> class FreeList_t> |
58 void TreeChunk<Chunk_t, FreeList_t>::verify_tree_chunk_list() const { | |
59 TreeChunk<Chunk_t, FreeList_t>* nextTC = (TreeChunk<Chunk_t, FreeList_t>*)next(); | |
0 | 60 if (prev() != NULL) { // interior list node shouldn'r have tree fields |
61 guarantee(embedded_list()->parent() == NULL && embedded_list()->left() == NULL && | |
62 embedded_list()->right() == NULL, "should be clear"); | |
63 } | |
64 if (nextTC != NULL) { | |
65 guarantee(as_TreeChunk(nextTC->prev()) == this, "broken chain"); | |
66 guarantee(nextTC->size() == size(), "wrong size"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
67 nextTC->verify_tree_chunk_list(); |
0 | 68 } |
69 } | |
70 | |
6885 | 71 template <class Chunk_t, template <class> class FreeList_t> |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7178
diff
changeset
|
72 TreeList<Chunk_t, FreeList_t>::TreeList() : _parent(NULL), |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7178
diff
changeset
|
73 _left(NULL), _right(NULL) {} |
0 | 74 |
6885 | 75 template <class Chunk_t, template <class> class FreeList_t> |
76 TreeList<Chunk_t, FreeList_t>* | |
77 TreeList<Chunk_t, FreeList_t>::as_TreeList(TreeChunk<Chunk_t,FreeList_t>* tc) { | |
0 | 78 // This first free chunk in the list will be the tree list. |
6885 | 79 assert((tc->size() >= (TreeChunk<Chunk_t, FreeList_t>::min_size())), |
80 "Chunk is too small for a TreeChunk"); | |
81 TreeList<Chunk_t, FreeList_t>* tl = tc->embedded_list(); | |
82 tl->initialize(); | |
0 | 83 tc->set_list(tl); |
84 tl->set_size(tc->size()); | |
85 tl->link_head(tc); | |
86 tl->link_tail(tc); | |
87 tl->set_count(1); | |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7178
diff
changeset
|
88 assert(tl->parent() == NULL, "Should be clear"); |
6885 | 89 return tl; |
90 } | |
91 | |
92 | |
93 template <class Chunk_t, template <class> class FreeList_t> | |
94 TreeList<Chunk_t, FreeList_t>* | |
95 get_chunk(size_t size, enum FreeBlockDictionary<Chunk_t>::Dither dither) { | |
96 FreeBlockDictionary<Chunk_t>::verify_par_locked(); | |
97 Chunk_t* res = get_chunk_from_tree(size, dither); | |
98 assert(res == NULL || res->is_free(), | |
99 "Should be returning a free chunk"); | |
100 assert(dither != FreeBlockDictionary<Chunk_t>::exactly || | |
101 res->size() == size, "Not correct size"); | |
102 return res; | |
103 } | |
104 | |
105 template <class Chunk_t, template <class> class FreeList_t> | |
106 TreeList<Chunk_t, FreeList_t>* | |
107 TreeList<Chunk_t, FreeList_t>::as_TreeList(HeapWord* addr, size_t size) { | |
108 TreeChunk<Chunk_t, FreeList_t>* tc = (TreeChunk<Chunk_t, FreeList_t>*) addr; | |
109 assert((size >= TreeChunk<Chunk_t, FreeList_t>::min_size()), | |
110 "Chunk is too small for a TreeChunk"); | |
111 // The space will have been mangled initially but | |
112 // is not remangled when a Chunk_t is returned to the free list | |
113 // (since it is used to maintain the chunk on the free list). | |
114 tc->assert_is_mangled(); | |
115 tc->set_size(size); | |
116 tc->link_prev(NULL); | |
117 tc->link_next(NULL); | |
118 TreeList<Chunk_t, FreeList_t>* tl = TreeList<Chunk_t, FreeList_t>::as_TreeList(tc); | |
0 | 119 return tl; |
120 } | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
121 |
6885 | 122 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
123 #if INCLUDE_ALL_GCS |
6885 | 124 // Specialize for AdaptiveFreeList which tries to avoid |
125 // splitting a chunk of a size that is under populated in favor of | |
126 // an over populated size. The general get_better_list() just returns | |
127 // the current list. | |
128 template <> | |
129 TreeList<FreeChunk, AdaptiveFreeList>* | |
130 TreeList<FreeChunk, AdaptiveFreeList>::get_better_list( | |
131 BinaryTreeDictionary<FreeChunk, ::AdaptiveFreeList>* dictionary) { | |
132 // A candidate chunk has been found. If it is already under | |
133 // populated, get a chunk associated with the hint for this | |
134 // chunk. | |
135 | |
136 TreeList<FreeChunk, ::AdaptiveFreeList>* curTL = this; | |
137 if (surplus() <= 0) { | |
138 /* Use the hint to find a size with a surplus, and reset the hint. */ | |
139 TreeList<FreeChunk, ::AdaptiveFreeList>* hintTL = this; | |
140 while (hintTL->hint() != 0) { | |
141 assert(hintTL->hint() > hintTL->size(), | |
142 "hint points in the wrong direction"); | |
143 hintTL = dictionary->find_list(hintTL->hint()); | |
144 assert(curTL != hintTL, "Infinite loop"); | |
145 if (hintTL == NULL || | |
146 hintTL == curTL /* Should not happen but protect against it */ ) { | |
147 // No useful hint. Set the hint to NULL and go on. | |
148 curTL->set_hint(0); | |
149 break; | |
150 } | |
151 assert(hintTL->size() > curTL->size(), "hint is inconsistent"); | |
152 if (hintTL->surplus() > 0) { | |
153 // The hint led to a list that has a surplus. Use it. | |
154 // Set the hint for the candidate to an overpopulated | |
155 // size. | |
156 curTL->set_hint(hintTL->size()); | |
157 // Change the candidate. | |
158 curTL = hintTL; | |
159 break; | |
160 } | |
161 } | |
162 } | |
163 return curTL; | |
164 } | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
165 #endif // INCLUDE_ALL_GCS |
6885 | 166 |
167 template <class Chunk_t, template <class> class FreeList_t> | |
168 TreeList<Chunk_t, FreeList_t>* | |
169 TreeList<Chunk_t, FreeList_t>::get_better_list( | |
170 BinaryTreeDictionary<Chunk_t, FreeList_t>* dictionary) { | |
171 return this; | |
0 | 172 } |
173 | |
6885 | 174 template <class Chunk_t, template <class> class FreeList_t> |
175 TreeList<Chunk_t, FreeList_t>* TreeList<Chunk_t, FreeList_t>::remove_chunk_replace_if_needed(TreeChunk<Chunk_t, FreeList_t>* tc) { | |
0 | 176 |
6885 | 177 TreeList<Chunk_t, FreeList_t>* retTL = this; |
178 Chunk_t* list = head(); | |
0 | 179 assert(!list || list != list->next(), "Chunk on list twice"); |
180 assert(tc != NULL, "Chunk being removed is NULL"); | |
181 assert(parent() == NULL || this == parent()->left() || | |
182 this == parent()->right(), "list is inconsistent"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
183 assert(tc->is_free(), "Header is not marked correctly"); |
0 | 184 assert(head() == NULL || head()->prev() == NULL, "list invariant"); |
185 assert(tail() == NULL || tail()->next() == NULL, "list invariant"); | |
186 | |
6885 | 187 Chunk_t* prevFC = tc->prev(); |
188 TreeChunk<Chunk_t, FreeList_t>* nextTC = TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(tc->next()); | |
0 | 189 assert(list != NULL, "should have at least the target chunk"); |
190 | |
191 // Is this the first item on the list? | |
192 if (tc == list) { | |
6885 | 193 // The "getChunk..." functions for a TreeList<Chunk_t, FreeList_t> will not return the |
0 | 194 // first chunk in the list unless it is the last chunk in the list |
195 // because the first chunk is also acting as the tree node. | |
196 // When coalescing happens, however, the first chunk in the a tree | |
197 // list can be the start of a free range. Free ranges are removed | |
198 // from the free lists so that they are not available to be | |
199 // allocated when the sweeper yields (giving up the free list lock) | |
200 // to allow mutator activity. If this chunk is the first in the | |
201 // list and is not the last in the list, do the work to copy the | |
6885 | 202 // TreeList<Chunk_t, FreeList_t> from the first chunk to the next chunk and update all |
203 // the TreeList<Chunk_t, FreeList_t> pointers in the chunks in the list. | |
0 | 204 if (nextTC == NULL) { |
1489
cff162798819
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
1145
diff
changeset
|
205 assert(prevFC == NULL, "Not last chunk in the list"); |
0 | 206 set_tail(NULL); |
207 set_head(NULL); | |
208 } else { | |
209 // copy embedded list. | |
210 nextTC->set_embedded_list(tc->embedded_list()); | |
211 retTL = nextTC->embedded_list(); | |
212 // Fix the pointer to the list in each chunk in the list. | |
213 // This can be slow for a long list. Consider having | |
214 // an option that does not allow the first chunk on the | |
215 // list to be coalesced. | |
6885 | 216 for (TreeChunk<Chunk_t, FreeList_t>* curTC = nextTC; curTC != NULL; |
217 curTC = TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(curTC->next())) { | |
0 | 218 curTC->set_list(retTL); |
219 } | |
6885 | 220 // Fix the parent to point to the new TreeList<Chunk_t, FreeList_t>. |
0 | 221 if (retTL->parent() != NULL) { |
222 if (this == retTL->parent()->left()) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
223 retTL->parent()->set_left(retTL); |
0 | 224 } else { |
225 assert(this == retTL->parent()->right(), "Parent is incorrect"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
226 retTL->parent()->set_right(retTL); |
0 | 227 } |
228 } | |
229 // Fix the children's parent pointers to point to the | |
230 // new list. | |
231 assert(right() == retTL->right(), "Should have been copied"); | |
232 if (retTL->right() != NULL) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
233 retTL->right()->set_parent(retTL); |
0 | 234 } |
235 assert(left() == retTL->left(), "Should have been copied"); | |
236 if (retTL->left() != NULL) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
237 retTL->left()->set_parent(retTL); |
0 | 238 } |
239 retTL->link_head(nextTC); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
240 assert(nextTC->is_free(), "Should be a free chunk"); |
0 | 241 } |
242 } else { | |
243 if (nextTC == NULL) { | |
244 // Removing chunk at tail of list | |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
245 this->link_tail(prevFC); |
0 | 246 } |
247 // Chunk is interior to the list | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
248 prevFC->link_after(nextTC); |
0 | 249 } |
250 | |
6885 | 251 // Below this point the embeded TreeList<Chunk_t, FreeList_t> being used for the |
0 | 252 // tree node may have changed. Don't use "this" |
6885 | 253 // TreeList<Chunk_t, FreeList_t>*. |
0 | 254 // chunk should still be a free chunk (bit set in _prev) |
255 assert(!retTL->head() || retTL->size() == retTL->head()->size(), | |
256 "Wrong sized chunk in list"); | |
257 debug_only( | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
258 tc->link_prev(NULL); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
259 tc->link_next(NULL); |
0 | 260 tc->set_list(NULL); |
261 bool prev_found = false; | |
262 bool next_found = false; | |
6885 | 263 for (Chunk_t* curFC = retTL->head(); |
0 | 264 curFC != NULL; curFC = curFC->next()) { |
265 assert(curFC != tc, "Chunk is still in list"); | |
266 if (curFC == prevFC) { | |
267 prev_found = true; | |
268 } | |
269 if (curFC == nextTC) { | |
270 next_found = true; | |
271 } | |
272 } | |
273 assert(prevFC == NULL || prev_found, "Chunk was lost from list"); | |
274 assert(nextTC == NULL || next_found, "Chunk was lost from list"); | |
275 assert(retTL->parent() == NULL || | |
276 retTL == retTL->parent()->left() || | |
277 retTL == retTL->parent()->right(), | |
278 "list is inconsistent"); | |
279 ) | |
280 retTL->decrement_count(); | |
281 | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
282 assert(tc->is_free(), "Should still be a free chunk"); |
0 | 283 assert(retTL->head() == NULL || retTL->head()->prev() == NULL, |
284 "list invariant"); | |
285 assert(retTL->tail() == NULL || retTL->tail()->next() == NULL, | |
286 "list invariant"); | |
287 return retTL; | |
288 } | |
6026 | 289 |
6885 | 290 template <class Chunk_t, template <class> class FreeList_t> |
291 void TreeList<Chunk_t, FreeList_t>::return_chunk_at_tail(TreeChunk<Chunk_t, FreeList_t>* chunk) { | |
0 | 292 assert(chunk != NULL, "returning NULL chunk"); |
293 assert(chunk->list() == this, "list should be set for chunk"); | |
294 assert(tail() != NULL, "The tree list is embedded in the first chunk"); | |
295 // which means that the list can never be empty. | |
7178 | 296 assert(!this->verify_chunk_in_free_list(chunk), "Double entry"); |
0 | 297 assert(head() == NULL || head()->prev() == NULL, "list invariant"); |
298 assert(tail() == NULL || tail()->next() == NULL, "list invariant"); | |
299 | |
6885 | 300 Chunk_t* fc = tail(); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
301 fc->link_after(chunk); |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
302 this->link_tail(chunk); |
0 | 303 |
304 assert(!tail() || size() == tail()->size(), "Wrong sized chunk in list"); | |
6885 | 305 FreeList_t<Chunk_t>::increment_count(); |
7178 | 306 debug_only(this->increment_returned_bytes_by(chunk->size()*sizeof(HeapWord));) |
0 | 307 assert(head() == NULL || head()->prev() == NULL, "list invariant"); |
308 assert(tail() == NULL || tail()->next() == NULL, "list invariant"); | |
309 } | |
310 | |
311 // Add this chunk at the head of the list. "At the head of the list" | |
312 // is defined to be after the chunk pointer to by head(). This is | |
6885 | 313 // because the TreeList<Chunk_t, FreeList_t> is embedded in the first TreeChunk<Chunk_t, FreeList_t> in the |
314 // list. See the definition of TreeChunk<Chunk_t, FreeList_t>. | |
315 template <class Chunk_t, template <class> class FreeList_t> | |
316 void TreeList<Chunk_t, FreeList_t>::return_chunk_at_head(TreeChunk<Chunk_t, FreeList_t>* chunk) { | |
0 | 317 assert(chunk->list() == this, "list should be set for chunk"); |
318 assert(head() != NULL, "The tree list is embedded in the first chunk"); | |
319 assert(chunk != NULL, "returning NULL chunk"); | |
7178 | 320 assert(!this->verify_chunk_in_free_list(chunk), "Double entry"); |
0 | 321 assert(head() == NULL || head()->prev() == NULL, "list invariant"); |
322 assert(tail() == NULL || tail()->next() == NULL, "list invariant"); | |
323 | |
6885 | 324 Chunk_t* fc = head()->next(); |
0 | 325 if (fc != NULL) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
326 chunk->link_after(fc); |
0 | 327 } else { |
328 assert(tail() == NULL, "List is inconsistent"); | |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
329 this->link_tail(chunk); |
0 | 330 } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
331 head()->link_after(chunk); |
0 | 332 assert(!head() || size() == head()->size(), "Wrong sized chunk in list"); |
6885 | 333 FreeList_t<Chunk_t>::increment_count(); |
7178 | 334 debug_only(this->increment_returned_bytes_by(chunk->size()*sizeof(HeapWord));) |
0 | 335 assert(head() == NULL || head()->prev() == NULL, "list invariant"); |
336 assert(tail() == NULL || tail()->next() == NULL, "list invariant"); | |
337 } | |
338 | |
6885 | 339 template <class Chunk_t, template <class> class FreeList_t> |
340 void TreeChunk<Chunk_t, FreeList_t>::assert_is_mangled() const { | |
341 assert((ZapUnusedHeapArea && | |
342 SpaceMangler::is_mangled((HeapWord*) Chunk_t::size_addr()) && | |
343 SpaceMangler::is_mangled((HeapWord*) Chunk_t::prev_addr()) && | |
344 SpaceMangler::is_mangled((HeapWord*) Chunk_t::next_addr())) || | |
345 (size() == 0 && prev() == NULL && next() == NULL), | |
346 "Space should be clear or mangled"); | |
0 | 347 } |
348 | |
6885 | 349 template <class Chunk_t, template <class> class FreeList_t> |
350 TreeChunk<Chunk_t, FreeList_t>* TreeList<Chunk_t, FreeList_t>::head_as_TreeChunk() { | |
351 assert(head() == NULL || (TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(head())->list() == this), | |
352 "Wrong type of chunk?"); | |
353 return TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(head()); | |
354 } | |
355 | |
356 template <class Chunk_t, template <class> class FreeList_t> | |
357 TreeChunk<Chunk_t, FreeList_t>* TreeList<Chunk_t, FreeList_t>::first_available() { | |
1777
179464550c7d
6983930: CMS: Various small cleanups ca September 2010
ysr
parents:
1552
diff
changeset
|
358 assert(head() != NULL, "The head of the list cannot be NULL"); |
6885 | 359 Chunk_t* fc = head()->next(); |
360 TreeChunk<Chunk_t, FreeList_t>* retTC; | |
0 | 361 if (fc == NULL) { |
362 retTC = head_as_TreeChunk(); | |
363 } else { | |
6885 | 364 retTC = TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(fc); |
0 | 365 } |
366 assert(retTC->list() == this, "Wrong type of chunk."); | |
367 return retTC; | |
368 } | |
369 | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
370 // Returns the block with the largest heap address amongst |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
371 // those in the list for this size; potentially slow and expensive, |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
372 // use with caution! |
6885 | 373 template <class Chunk_t, template <class> class FreeList_t> |
374 TreeChunk<Chunk_t, FreeList_t>* TreeList<Chunk_t, FreeList_t>::largest_address() { | |
1777
179464550c7d
6983930: CMS: Various small cleanups ca September 2010
ysr
parents:
1552
diff
changeset
|
375 assert(head() != NULL, "The head of the list cannot be NULL"); |
6885 | 376 Chunk_t* fc = head()->next(); |
377 TreeChunk<Chunk_t, FreeList_t>* retTC; | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
378 if (fc == NULL) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
379 retTC = head_as_TreeChunk(); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
380 } else { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
381 // walk down the list and return the one with the highest |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
382 // heap address among chunks of this size. |
6885 | 383 Chunk_t* last = fc; |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
384 while (fc->next() != NULL) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
385 if ((HeapWord*)last < (HeapWord*)fc) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
386 last = fc; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
387 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
388 fc = fc->next(); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
389 } |
6885 | 390 retTC = TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(last); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
391 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
392 assert(retTC->list() == this, "Wrong type of chunk."); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
393 return retTC; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
394 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
395 |
6885 | 396 template <class Chunk_t, template <class> class FreeList_t> |
397 BinaryTreeDictionary<Chunk_t, FreeList_t>::BinaryTreeDictionary(MemRegion mr) { | |
398 assert((mr.byte_size() > min_size()), "minimum chunk size"); | |
0 | 399 |
400 reset(mr); | |
401 assert(root()->left() == NULL, "reset check failed"); | |
402 assert(root()->right() == NULL, "reset check failed"); | |
403 assert(root()->head()->next() == NULL, "reset check failed"); | |
404 assert(root()->head()->prev() == NULL, "reset check failed"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
405 assert(total_size() == root()->size(), "reset check failed"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
406 assert(total_free_blocks() == 1, "reset check failed"); |
0 | 407 } |
408 | |
6885 | 409 template <class Chunk_t, template <class> class FreeList_t> |
410 void BinaryTreeDictionary<Chunk_t, FreeList_t>::inc_total_size(size_t inc) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
411 _total_size = _total_size + inc; |
0 | 412 } |
413 | |
6885 | 414 template <class Chunk_t, template <class> class FreeList_t> |
415 void BinaryTreeDictionary<Chunk_t, FreeList_t>::dec_total_size(size_t dec) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
416 _total_size = _total_size - dec; |
0 | 417 } |
418 | |
6885 | 419 template <class Chunk_t, template <class> class FreeList_t> |
420 void BinaryTreeDictionary<Chunk_t, FreeList_t>::reset(MemRegion mr) { | |
421 assert((mr.byte_size() > min_size()), "minimum chunk size"); | |
422 set_root(TreeList<Chunk_t, FreeList_t>::as_TreeList(mr.start(), mr.word_size())); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
423 set_total_size(mr.word_size()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
424 set_total_free_blocks(1); |
0 | 425 } |
426 | |
6885 | 427 template <class Chunk_t, template <class> class FreeList_t> |
428 void BinaryTreeDictionary<Chunk_t, FreeList_t>::reset(HeapWord* addr, size_t byte_size) { | |
0 | 429 MemRegion mr(addr, heap_word_size(byte_size)); |
430 reset(mr); | |
431 } | |
432 | |
6885 | 433 template <class Chunk_t, template <class> class FreeList_t> |
434 void BinaryTreeDictionary<Chunk_t, FreeList_t>::reset() { | |
0 | 435 set_root(NULL); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
436 set_total_size(0); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
437 set_total_free_blocks(0); |
0 | 438 } |
439 | |
440 // Get a free block of size at least size from tree, or NULL. | |
6885 | 441 template <class Chunk_t, template <class> class FreeList_t> |
442 TreeChunk<Chunk_t, FreeList_t>* | |
443 BinaryTreeDictionary<Chunk_t, FreeList_t>::get_chunk_from_tree( | |
444 size_t size, | |
445 enum FreeBlockDictionary<Chunk_t>::Dither dither) | |
0 | 446 { |
6885 | 447 TreeList<Chunk_t, FreeList_t> *curTL, *prevTL; |
448 TreeChunk<Chunk_t, FreeList_t>* retTC = NULL; | |
449 | |
450 assert((size >= min_size()), "minimum chunk size"); | |
0 | 451 if (FLSVerifyDictionary) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
452 verify_tree(); |
0 | 453 } |
454 // starting at the root, work downwards trying to find match. | |
455 // Remember the last node of size too great or too small. | |
456 for (prevTL = curTL = root(); curTL != NULL;) { | |
457 if (curTL->size() == size) { // exact match | |
458 break; | |
459 } | |
460 prevTL = curTL; | |
461 if (curTL->size() < size) { // proceed to right sub-tree | |
462 curTL = curTL->right(); | |
463 } else { // proceed to left sub-tree | |
464 assert(curTL->size() > size, "size inconsistency"); | |
465 curTL = curTL->left(); | |
466 } | |
467 } | |
468 if (curTL == NULL) { // couldn't find exact match | |
6026 | 469 |
6885 | 470 if (dither == FreeBlockDictionary<Chunk_t>::exactly) return NULL; |
6026 | 471 |
0 | 472 // try and find the next larger size by walking back up the search path |
473 for (curTL = prevTL; curTL != NULL;) { | |
474 if (curTL->size() >= size) break; | |
475 else curTL = curTL->parent(); | |
476 } | |
477 assert(curTL == NULL || curTL->count() > 0, | |
478 "An empty list should not be in the tree"); | |
479 } | |
480 if (curTL != NULL) { | |
481 assert(curTL->size() >= size, "size inconsistency"); | |
482 | |
6885 | 483 curTL = curTL->get_better_list(this); |
484 | |
0 | 485 retTC = curTL->first_available(); |
486 assert((retTC != NULL) && (curTL->count() > 0), | |
487 "A list in the binary tree should not be NULL"); | |
488 assert(retTC->size() >= size, | |
489 "A chunk of the wrong size was found"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
490 remove_chunk_from_tree(retTC); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
491 assert(retTC->is_free(), "Header is not marked correctly"); |
0 | 492 } |
493 | |
494 if (FLSVerifyDictionary) { | |
495 verify(); | |
496 } | |
497 return retTC; | |
498 } | |
499 | |
6885 | 500 template <class Chunk_t, template <class> class FreeList_t> |
501 TreeList<Chunk_t, FreeList_t>* BinaryTreeDictionary<Chunk_t, FreeList_t>::find_list(size_t size) const { | |
502 TreeList<Chunk_t, FreeList_t>* curTL; | |
0 | 503 for (curTL = root(); curTL != NULL;) { |
504 if (curTL->size() == size) { // exact match | |
505 break; | |
506 } | |
507 | |
508 if (curTL->size() < size) { // proceed to right sub-tree | |
509 curTL = curTL->right(); | |
510 } else { // proceed to left sub-tree | |
511 assert(curTL->size() > size, "size inconsistency"); | |
512 curTL = curTL->left(); | |
513 } | |
514 } | |
515 return curTL; | |
516 } | |
517 | |
518 | |
6885 | 519 template <class Chunk_t, template <class> class FreeList_t> |
520 bool BinaryTreeDictionary<Chunk_t, FreeList_t>::verify_chunk_in_free_list(Chunk_t* tc) const { | |
0 | 521 size_t size = tc->size(); |
6885 | 522 TreeList<Chunk_t, FreeList_t>* tl = find_list(size); |
0 | 523 if (tl == NULL) { |
524 return false; | |
525 } else { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
526 return tl->verify_chunk_in_free_list(tc); |
0 | 527 } |
528 } | |
529 | |
6885 | 530 template <class Chunk_t, template <class> class FreeList_t> |
531 Chunk_t* BinaryTreeDictionary<Chunk_t, FreeList_t>::find_largest_dict() const { | |
532 TreeList<Chunk_t, FreeList_t> *curTL = root(); | |
0 | 533 if (curTL != NULL) { |
534 while(curTL->right() != NULL) curTL = curTL->right(); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
535 return curTL->largest_address(); |
0 | 536 } else { |
537 return NULL; | |
538 } | |
539 } | |
540 | |
541 // Remove the current chunk from the tree. If it is not the last | |
542 // chunk in a list on a tree node, just unlink it. | |
543 // If it is the last chunk in the list (the next link is NULL), | |
544 // remove the node and repair the tree. | |
6885 | 545 template <class Chunk_t, template <class> class FreeList_t> |
546 TreeChunk<Chunk_t, FreeList_t>* | |
547 BinaryTreeDictionary<Chunk_t, FreeList_t>::remove_chunk_from_tree(TreeChunk<Chunk_t, FreeList_t>* tc) { | |
0 | 548 assert(tc != NULL, "Should not call with a NULL chunk"); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
549 assert(tc->is_free(), "Header is not marked correctly"); |
0 | 550 |
6885 | 551 TreeList<Chunk_t, FreeList_t> *newTL, *parentTL; |
552 TreeChunk<Chunk_t, FreeList_t>* retTC; | |
553 TreeList<Chunk_t, FreeList_t>* tl = tc->list(); | |
0 | 554 debug_only( |
555 bool removing_only_chunk = false; | |
556 if (tl == _root) { | |
557 if ((_root->left() == NULL) && (_root->right() == NULL)) { | |
558 if (_root->count() == 1) { | |
559 assert(_root->head() == tc, "Should only be this one chunk"); | |
560 removing_only_chunk = true; | |
561 } | |
562 } | |
563 } | |
564 ) | |
565 assert(tl != NULL, "List should be set"); | |
566 assert(tl->parent() == NULL || tl == tl->parent()->left() || | |
567 tl == tl->parent()->right(), "list is inconsistent"); | |
568 | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
569 bool complicated_splice = false; |
0 | 570 |
571 retTC = tc; | |
572 // Removing this chunk can have the side effect of changing the node | |
6885 | 573 // (TreeList<Chunk_t, FreeList_t>*) in the tree. If the node is the root, update it. |
574 TreeList<Chunk_t, FreeList_t>* replacementTL = tl->remove_chunk_replace_if_needed(tc); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
575 assert(tc->is_free(), "Chunk should still be free"); |
0 | 576 assert(replacementTL->parent() == NULL || |
577 replacementTL == replacementTL->parent()->left() || | |
578 replacementTL == replacementTL->parent()->right(), | |
579 "list is inconsistent"); | |
580 if (tl == root()) { | |
581 assert(replacementTL->parent() == NULL, "Incorrectly replacing root"); | |
582 set_root(replacementTL); | |
583 } | |
6885 | 584 #ifdef ASSERT |
0 | 585 if (tl != replacementTL) { |
586 assert(replacementTL->head() != NULL, | |
587 "If the tree list was replaced, it should not be a NULL list"); | |
6885 | 588 TreeList<Chunk_t, FreeList_t>* rhl = replacementTL->head_as_TreeChunk()->list(); |
589 TreeList<Chunk_t, FreeList_t>* rtl = | |
590 TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(replacementTL->tail())->list(); | |
0 | 591 assert(rhl == replacementTL, "Broken head"); |
592 assert(rtl == replacementTL, "Broken tail"); | |
593 assert(replacementTL->size() == tc->size(), "Broken size"); | |
594 } | |
6885 | 595 #endif |
0 | 596 |
597 // Does the tree need to be repaired? | |
598 if (replacementTL->count() == 0) { | |
599 assert(replacementTL->head() == NULL && | |
600 replacementTL->tail() == NULL, "list count is incorrect"); | |
601 // Find the replacement node for the (soon to be empty) node being removed. | |
602 // if we have a single (or no) child, splice child in our stead | |
603 if (replacementTL->left() == NULL) { | |
604 // left is NULL so pick right. right may also be NULL. | |
605 newTL = replacementTL->right(); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
606 debug_only(replacementTL->clear_right();) |
0 | 607 } else if (replacementTL->right() == NULL) { |
608 // right is NULL | |
609 newTL = replacementTL->left(); | |
6885 | 610 debug_only(replacementTL->clear_left();) |
0 | 611 } else { // we have both children, so, by patriarchal convention, |
612 // my replacement is least node in right sub-tree | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
613 complicated_splice = true; |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
614 newTL = remove_tree_minimum(replacementTL->right()); |
0 | 615 assert(newTL != NULL && newTL->left() == NULL && |
616 newTL->right() == NULL, "sub-tree minimum exists"); | |
617 } | |
618 // newTL is the replacement for the (soon to be empty) node. | |
619 // newTL may be NULL. | |
620 // should verify; we just cleanly excised our replacement | |
621 if (FLSVerifyDictionary) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
622 verify_tree(); |
0 | 623 } |
624 // first make newTL my parent's child | |
625 if ((parentTL = replacementTL->parent()) == NULL) { | |
626 // newTL should be root | |
627 assert(tl == root(), "Incorrectly replacing root"); | |
628 set_root(newTL); | |
629 if (newTL != NULL) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
630 newTL->clear_parent(); |
0 | 631 } |
632 } else if (parentTL->right() == replacementTL) { | |
633 // replacementTL is a right child | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
634 parentTL->set_right(newTL); |
0 | 635 } else { // replacementTL is a left child |
636 assert(parentTL->left() == replacementTL, "should be left child"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
637 parentTL->set_left(newTL); |
0 | 638 } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
639 debug_only(replacementTL->clear_parent();) |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
640 if (complicated_splice) { // we need newTL to get replacementTL's |
0 | 641 // two children |
642 assert(newTL != NULL && | |
643 newTL->left() == NULL && newTL->right() == NULL, | |
644 "newTL should not have encumbrances from the past"); | |
645 // we'd like to assert as below: | |
646 // assert(replacementTL->left() != NULL && replacementTL->right() != NULL, | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
647 // "else !complicated_splice"); |
0 | 648 // ... however, the above assertion is too strong because we aren't |
649 // guaranteed that replacementTL->right() is still NULL. | |
650 // Recall that we removed | |
651 // the right sub-tree minimum from replacementTL. | |
652 // That may well have been its right | |
653 // child! So we'll just assert half of the above: | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
654 assert(replacementTL->left() != NULL, "else !complicated_splice"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
655 newTL->set_left(replacementTL->left()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
656 newTL->set_right(replacementTL->right()); |
0 | 657 debug_only( |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
658 replacementTL->clear_right(); |
6885 | 659 replacementTL->clear_left(); |
0 | 660 ) |
661 } | |
662 assert(replacementTL->right() == NULL && | |
663 replacementTL->left() == NULL && | |
664 replacementTL->parent() == NULL, | |
665 "delete without encumbrances"); | |
666 } | |
667 | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
668 assert(total_size() >= retTC->size(), "Incorrect total size"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
669 dec_total_size(retTC->size()); // size book-keeping |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
670 assert(total_free_blocks() > 0, "Incorrect total count"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
671 set_total_free_blocks(total_free_blocks() - 1); |
0 | 672 |
673 assert(retTC != NULL, "null chunk?"); | |
674 assert(retTC->prev() == NULL && retTC->next() == NULL, | |
675 "should return without encumbrances"); | |
676 if (FLSVerifyDictionary) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
677 verify_tree(); |
0 | 678 } |
679 assert(!removing_only_chunk || _root == NULL, "root should be NULL"); | |
6885 | 680 return TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(retTC); |
0 | 681 } |
682 | |
683 // Remove the leftmost node (lm) in the tree and return it. | |
684 // If lm has a right child, link it to the left node of | |
685 // the parent of lm. | |
6885 | 686 template <class Chunk_t, template <class> class FreeList_t> |
687 TreeList<Chunk_t, FreeList_t>* BinaryTreeDictionary<Chunk_t, FreeList_t>::remove_tree_minimum(TreeList<Chunk_t, FreeList_t>* tl) { | |
0 | 688 assert(tl != NULL && tl->parent() != NULL, "really need a proper sub-tree"); |
689 // locate the subtree minimum by walking down left branches | |
6885 | 690 TreeList<Chunk_t, FreeList_t>* curTL = tl; |
0 | 691 for (; curTL->left() != NULL; curTL = curTL->left()); |
692 // obviously curTL now has at most one child, a right child | |
693 if (curTL != root()) { // Should this test just be removed? | |
6885 | 694 TreeList<Chunk_t, FreeList_t>* parentTL = curTL->parent(); |
0 | 695 if (parentTL->left() == curTL) { // curTL is a left child |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
696 parentTL->set_left(curTL->right()); |
0 | 697 } else { |
698 // If the list tl has no left child, then curTL may be | |
699 // the right child of parentTL. | |
700 assert(parentTL->right() == curTL, "should be a right child"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
701 parentTL->set_right(curTL->right()); |
0 | 702 } |
703 } else { | |
704 // The only use of this method would not pass the root of the | |
705 // tree (as indicated by the assertion above that the tree list | |
706 // has a parent) but the specification does not explicitly exclude the | |
707 // passing of the root so accomodate it. | |
708 set_root(NULL); | |
709 } | |
710 debug_only( | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
711 curTL->clear_parent(); // Test if this needs to be cleared |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
712 curTL->clear_right(); // recall, above, left child is already null |
0 | 713 ) |
714 // we just excised a (non-root) node, we should still verify all tree invariants | |
715 if (FLSVerifyDictionary) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
716 verify_tree(); |
0 | 717 } |
718 return curTL; | |
719 } | |
720 | |
6885 | 721 template <class Chunk_t, template <class> class FreeList_t> |
722 void BinaryTreeDictionary<Chunk_t, FreeList_t>::insert_chunk_in_tree(Chunk_t* fc) { | |
723 TreeList<Chunk_t, FreeList_t> *curTL, *prevTL; | |
0 | 724 size_t size = fc->size(); |
725 | |
6885 | 726 assert((size >= min_size()), |
727 err_msg(SIZE_FORMAT " is too small to be a TreeChunk<Chunk_t, FreeList_t> " SIZE_FORMAT, | |
728 size, min_size())); | |
0 | 729 if (FLSVerifyDictionary) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
730 verify_tree(); |
0 | 731 } |
732 | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
733 fc->clear_next(); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
734 fc->link_prev(NULL); |
0 | 735 |
736 // work down from the _root, looking for insertion point | |
737 for (prevTL = curTL = root(); curTL != NULL;) { | |
738 if (curTL->size() == size) // exact match | |
739 break; | |
740 prevTL = curTL; | |
741 if (curTL->size() > size) { // follow left branch | |
742 curTL = curTL->left(); | |
743 } else { // follow right branch | |
744 assert(curTL->size() < size, "size inconsistency"); | |
745 curTL = curTL->right(); | |
746 } | |
747 } | |
6885 | 748 TreeChunk<Chunk_t, FreeList_t>* tc = TreeChunk<Chunk_t, FreeList_t>::as_TreeChunk(fc); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
749 // This chunk is being returned to the binary tree. Its embedded |
6885 | 750 // TreeList<Chunk_t, FreeList_t> should be unused at this point. |
0 | 751 tc->initialize(); |
752 if (curTL != NULL) { // exact match | |
753 tc->set_list(curTL); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
754 curTL->return_chunk_at_tail(tc); |
0 | 755 } else { // need a new node in tree |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
756 tc->clear_next(); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
757 tc->link_prev(NULL); |
6885 | 758 TreeList<Chunk_t, FreeList_t>* newTL = TreeList<Chunk_t, FreeList_t>::as_TreeList(tc); |
759 assert(((TreeChunk<Chunk_t, FreeList_t>*)tc)->list() == newTL, | |
0 | 760 "List was not initialized correctly"); |
761 if (prevTL == NULL) { // we are the only tree node | |
762 assert(root() == NULL, "control point invariant"); | |
763 set_root(newTL); | |
764 } else { // insert under prevTL ... | |
765 if (prevTL->size() < size) { // am right child | |
766 assert(prevTL->right() == NULL, "control point invariant"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
767 prevTL->set_right(newTL); |
0 | 768 } else { // am left child |
769 assert(prevTL->size() > size && prevTL->left() == NULL, "cpt pt inv"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
770 prevTL->set_left(newTL); |
0 | 771 } |
772 } | |
773 } | |
774 assert(tc->list() != NULL, "Tree list should be set"); | |
775 | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
776 inc_total_size(size); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
777 // Method 'total_size_in_tree' walks through the every block in the |
0 | 778 // tree, so it can cause significant performance loss if there are |
779 // many blocks in the tree | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
780 assert(!FLSVerifyDictionary || total_size_in_tree(root()) == total_size(), "_total_size inconsistency"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
781 set_total_free_blocks(total_free_blocks() + 1); |
0 | 782 if (FLSVerifyDictionary) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
783 verify_tree(); |
0 | 784 } |
785 } | |
786 | |
6885 | 787 template <class Chunk_t, template <class> class FreeList_t> |
788 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::max_chunk_size() const { | |
789 FreeBlockDictionary<Chunk_t>::verify_par_locked(); | |
790 TreeList<Chunk_t, FreeList_t>* tc = root(); | |
0 | 791 if (tc == NULL) return 0; |
792 for (; tc->right() != NULL; tc = tc->right()); | |
793 return tc->size(); | |
794 } | |
795 | |
6885 | 796 template <class Chunk_t, template <class> class FreeList_t> |
797 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_list_length(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 798 size_t res; |
799 res = tl->count(); | |
800 #ifdef ASSERT | |
801 size_t cnt; | |
6885 | 802 Chunk_t* tc = tl->head(); |
0 | 803 for (cnt = 0; tc != NULL; tc = tc->next(), cnt++); |
804 assert(res == cnt, "The count is not being maintained correctly"); | |
805 #endif | |
806 return res; | |
807 } | |
808 | |
6885 | 809 template <class Chunk_t, template <class> class FreeList_t> |
810 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_size_in_tree(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 811 if (tl == NULL) |
812 return 0; | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
813 return (tl->size() * total_list_length(tl)) + |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
814 total_size_in_tree(tl->left()) + |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
815 total_size_in_tree(tl->right()); |
0 | 816 } |
817 | |
6885 | 818 template <class Chunk_t, template <class> class FreeList_t> |
819 double BinaryTreeDictionary<Chunk_t, FreeList_t>::sum_of_squared_block_sizes(TreeList<Chunk_t, FreeList_t>* const tl) const { | |
0 | 820 if (tl == NULL) { |
821 return 0.0; | |
822 } | |
823 double size = (double)(tl->size()); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
824 double curr = size * size * total_list_length(tl); |
0 | 825 curr += sum_of_squared_block_sizes(tl->left()); |
826 curr += sum_of_squared_block_sizes(tl->right()); | |
827 return curr; | |
828 } | |
829 | |
6885 | 830 template <class Chunk_t, template <class> class FreeList_t> |
831 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_free_blocks_in_tree(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 832 if (tl == NULL) |
833 return 0; | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
834 return total_list_length(tl) + |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
835 total_free_blocks_in_tree(tl->left()) + |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
836 total_free_blocks_in_tree(tl->right()); |
0 | 837 } |
838 | |
6885 | 839 template <class Chunk_t, template <class> class FreeList_t> |
840 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::num_free_blocks() const { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
841 assert(total_free_blocks_in_tree(root()) == total_free_blocks(), |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
842 "_total_free_blocks inconsistency"); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
843 return total_free_blocks(); |
0 | 844 } |
845 | |
6885 | 846 template <class Chunk_t, template <class> class FreeList_t> |
847 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::tree_height_helper(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 848 if (tl == NULL) |
849 return 0; | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
850 return 1 + MAX2(tree_height_helper(tl->left()), |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
851 tree_height_helper(tl->right())); |
0 | 852 } |
853 | |
6885 | 854 template <class Chunk_t, template <class> class FreeList_t> |
855 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::tree_height() const { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
856 return tree_height_helper(root()); |
0 | 857 } |
858 | |
6885 | 859 template <class Chunk_t, template <class> class FreeList_t> |
860 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_nodes_helper(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 861 if (tl == NULL) { |
862 return 0; | |
863 } | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
864 return 1 + total_nodes_helper(tl->left()) + |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
865 total_nodes_helper(tl->right()); |
0 | 866 } |
867 | |
6885 | 868 template <class Chunk_t, template <class> class FreeList_t> |
869 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_nodes_in_tree(TreeList<Chunk_t, FreeList_t>* tl) const { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
870 return total_nodes_helper(root()); |
0 | 871 } |
872 | |
6885 | 873 template <class Chunk_t, template <class> class FreeList_t> |
874 void BinaryTreeDictionary<Chunk_t, FreeList_t>::dict_census_update(size_t size, bool split, bool birth){} | |
875 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
876 #if INCLUDE_ALL_GCS |
6885 | 877 template <> |
7947
3c327c2b6782
8004895: NPG: JMapPermCore test failure caused by warnings about missing field
jmasa
parents:
7446
diff
changeset
|
878 void AFLBinaryTreeDictionary::dict_census_update(size_t size, bool split, bool birth){ |
6885 | 879 TreeList<FreeChunk, AdaptiveFreeList>* nd = find_list(size); |
0 | 880 if (nd) { |
881 if (split) { | |
882 if (birth) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
883 nd->increment_split_births(); |
0 | 884 nd->increment_surplus(); |
885 } else { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
886 nd->increment_split_deaths(); |
0 | 887 nd->decrement_surplus(); |
888 } | |
889 } else { | |
890 if (birth) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
891 nd->increment_coal_births(); |
0 | 892 nd->increment_surplus(); |
893 } else { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
894 nd->increment_coal_deaths(); |
0 | 895 nd->decrement_surplus(); |
896 } | |
897 } | |
898 } | |
899 // A list for this size may not be found (nd == 0) if | |
900 // This is a death where the appropriate list is now | |
901 // empty and has been removed from the list. | |
902 // This is a birth associated with a LinAB. The chunk | |
903 // for the LinAB is not in the dictionary. | |
904 } | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
905 #endif // INCLUDE_ALL_GCS |
0 | 906 |
6885 | 907 template <class Chunk_t, template <class> class FreeList_t> |
908 bool BinaryTreeDictionary<Chunk_t, FreeList_t>::coal_dict_over_populated(size_t size) { | |
909 // For the general type of freelists, encourage coalescing by | |
910 // returning true. | |
911 return true; | |
912 } | |
913 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
914 #if INCLUDE_ALL_GCS |
6885 | 915 template <> |
7947
3c327c2b6782
8004895: NPG: JMapPermCore test failure caused by warnings about missing field
jmasa
parents:
7446
diff
changeset
|
916 bool AFLBinaryTreeDictionary::coal_dict_over_populated(size_t size) { |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
917 if (FLSAlwaysCoalesceLarge) return true; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
918 |
6885 | 919 TreeList<FreeChunk, AdaptiveFreeList>* list_of_size = find_list(size); |
0 | 920 // None of requested size implies overpopulated. |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
921 return list_of_size == NULL || list_of_size->coal_desired() <= 0 || |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
922 list_of_size->count() > list_of_size->coal_desired(); |
0 | 923 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
924 #endif // INCLUDE_ALL_GCS |
0 | 925 |
926 // Closures for walking the binary tree. | |
927 // do_list() walks the free list in a node applying the closure | |
928 // to each free chunk in the list | |
929 // do_tree() walks the nodes in the binary tree applying do_list() | |
930 // to each list at each node. | |
931 | |
6885 | 932 template <class Chunk_t, template <class> class FreeList_t> |
0 | 933 class TreeCensusClosure : public StackObj { |
934 protected: | |
6885 | 935 virtual void do_list(FreeList_t<Chunk_t>* fl) = 0; |
0 | 936 public: |
6885 | 937 virtual void do_tree(TreeList<Chunk_t, FreeList_t>* tl) = 0; |
0 | 938 }; |
939 | |
6885 | 940 template <class Chunk_t, template <class> class FreeList_t> |
941 class AscendTreeCensusClosure : public TreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 942 public: |
6885 | 943 void do_tree(TreeList<Chunk_t, FreeList_t>* tl) { |
0 | 944 if (tl != NULL) { |
945 do_tree(tl->left()); | |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
946 this->do_list(tl); |
0 | 947 do_tree(tl->right()); |
948 } | |
949 } | |
950 }; | |
951 | |
6885 | 952 template <class Chunk_t, template <class> class FreeList_t> |
953 class DescendTreeCensusClosure : public TreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 954 public: |
6885 | 955 void do_tree(TreeList<Chunk_t, FreeList_t>* tl) { |
0 | 956 if (tl != NULL) { |
957 do_tree(tl->right()); | |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
958 this->do_list(tl); |
0 | 959 do_tree(tl->left()); |
960 } | |
961 } | |
962 }; | |
963 | |
964 // For each list in the tree, calculate the desired, desired | |
965 // coalesce, count before sweep, and surplus before sweep. | |
6885 | 966 template <class Chunk_t, template <class> class FreeList_t> |
967 class BeginSweepClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 968 double _percentage; |
969 float _inter_sweep_current; | |
970 float _inter_sweep_estimate; | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
971 float _intra_sweep_estimate; |
0 | 972 |
973 public: | |
974 BeginSweepClosure(double p, float inter_sweep_current, | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
975 float inter_sweep_estimate, |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
976 float intra_sweep_estimate) : |
0 | 977 _percentage(p), |
978 _inter_sweep_current(inter_sweep_current), | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
979 _inter_sweep_estimate(inter_sweep_estimate), |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
980 _intra_sweep_estimate(intra_sweep_estimate) { } |
0 | 981 |
6885 | 982 void do_list(FreeList<Chunk_t>* fl) {} |
983 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
984 #if INCLUDE_ALL_GCS |
6885 | 985 void do_list(AdaptiveFreeList<Chunk_t>* fl) { |
0 | 986 double coalSurplusPercent = _percentage; |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
987 fl->compute_desired(_inter_sweep_current, _inter_sweep_estimate, _intra_sweep_estimate); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
988 fl->set_coal_desired((ssize_t)((double)fl->desired() * coalSurplusPercent)); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
989 fl->set_before_sweep(fl->count()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
990 fl->set_bfr_surp(fl->surplus()); |
0 | 991 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
992 #endif // INCLUDE_ALL_GCS |
0 | 993 }; |
994 | |
995 // Used to search the tree until a condition is met. | |
996 // Similar to TreeCensusClosure but searches the | |
997 // tree and returns promptly when found. | |
998 | |
6885 | 999 template <class Chunk_t, template <class> class FreeList_t> |
0 | 1000 class TreeSearchClosure : public StackObj { |
1001 protected: | |
6885 | 1002 virtual bool do_list(FreeList_t<Chunk_t>* fl) = 0; |
0 | 1003 public: |
6885 | 1004 virtual bool do_tree(TreeList<Chunk_t, FreeList_t>* tl) = 0; |
0 | 1005 }; |
1006 | |
1007 #if 0 // Don't need this yet but here for symmetry. | |
6885 | 1008 template <class Chunk_t, template <class> class FreeList_t> |
1009 class AscendTreeSearchClosure : public TreeSearchClosure<Chunk_t> { | |
0 | 1010 public: |
6885 | 1011 bool do_tree(TreeList<Chunk_t, FreeList_t>* tl) { |
0 | 1012 if (tl != NULL) { |
1013 if (do_tree(tl->left())) return true; | |
1014 if (do_list(tl)) return true; | |
1015 if (do_tree(tl->right())) return true; | |
1016 } | |
1017 return false; | |
1018 } | |
1019 }; | |
1020 #endif | |
1021 | |
6885 | 1022 template <class Chunk_t, template <class> class FreeList_t> |
1023 class DescendTreeSearchClosure : public TreeSearchClosure<Chunk_t, FreeList_t> { | |
0 | 1024 public: |
6885 | 1025 bool do_tree(TreeList<Chunk_t, FreeList_t>* tl) { |
0 | 1026 if (tl != NULL) { |
1027 if (do_tree(tl->right())) return true; | |
6970
0400886d2613
8003259: NPG: Build with gcc 4.7.2 broken by 7045397
coleenp
parents:
6885
diff
changeset
|
1028 if (this->do_list(tl)) return true; |
0 | 1029 if (do_tree(tl->left())) return true; |
1030 } | |
1031 return false; | |
1032 } | |
1033 }; | |
1034 | |
1035 // Searches the tree for a chunk that ends at the | |
1036 // specified address. | |
6885 | 1037 template <class Chunk_t, template <class> class FreeList_t> |
1038 class EndTreeSearchClosure : public DescendTreeSearchClosure<Chunk_t, FreeList_t> { | |
0 | 1039 HeapWord* _target; |
6885 | 1040 Chunk_t* _found; |
0 | 1041 |
1042 public: | |
1043 EndTreeSearchClosure(HeapWord* target) : _target(target), _found(NULL) {} | |
6885 | 1044 bool do_list(FreeList_t<Chunk_t>* fl) { |
1045 Chunk_t* item = fl->head(); | |
0 | 1046 while (item != NULL) { |
6885 | 1047 if (item->end() == (uintptr_t*) _target) { |
0 | 1048 _found = item; |
1049 return true; | |
1050 } | |
1051 item = item->next(); | |
1052 } | |
1053 return false; | |
1054 } | |
6885 | 1055 Chunk_t* found() { return _found; } |
0 | 1056 }; |
1057 | |
6885 | 1058 template <class Chunk_t, template <class> class FreeList_t> |
1059 Chunk_t* BinaryTreeDictionary<Chunk_t, FreeList_t>::find_chunk_ends_at(HeapWord* target) const { | |
1060 EndTreeSearchClosure<Chunk_t, FreeList_t> etsc(target); | |
0 | 1061 bool found_target = etsc.do_tree(root()); |
1062 assert(found_target || etsc.found() == NULL, "Consistency check"); | |
1063 assert(!found_target || etsc.found() != NULL, "Consistency check"); | |
1064 return etsc.found(); | |
1065 } | |
1066 | |
6885 | 1067 template <class Chunk_t, template <class> class FreeList_t> |
1068 void BinaryTreeDictionary<Chunk_t, FreeList_t>::begin_sweep_dict_census(double coalSurplusPercent, | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1069 float inter_sweep_current, float inter_sweep_estimate, float intra_sweep_estimate) { |
6885 | 1070 BeginSweepClosure<Chunk_t, FreeList_t> bsc(coalSurplusPercent, inter_sweep_current, |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1071 inter_sweep_estimate, |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1072 intra_sweep_estimate); |
0 | 1073 bsc.do_tree(root()); |
1074 } | |
1075 | |
1076 // Closures and methods for calculating total bytes returned to the | |
1077 // free lists in the tree. | |
6026 | 1078 #ifndef PRODUCT |
6885 | 1079 template <class Chunk_t, template <class> class FreeList_t> |
1080 class InitializeDictReturnedBytesClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 1081 public: |
6885 | 1082 void do_list(FreeList_t<Chunk_t>* fl) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1083 fl->set_returned_bytes(0); |
6026 | 1084 } |
1085 }; | |
0 | 1086 |
6885 | 1087 template <class Chunk_t, template <class> class FreeList_t> |
1088 void BinaryTreeDictionary<Chunk_t, FreeList_t>::initialize_dict_returned_bytes() { | |
1089 InitializeDictReturnedBytesClosure<Chunk_t, FreeList_t> idrb; | |
6026 | 1090 idrb.do_tree(root()); |
1091 } | |
0 | 1092 |
6885 | 1093 template <class Chunk_t, template <class> class FreeList_t> |
1094 class ReturnedBytesClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1095 size_t _dict_returned_bytes; |
6026 | 1096 public: |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1097 ReturnedBytesClosure() { _dict_returned_bytes = 0; } |
6885 | 1098 void do_list(FreeList_t<Chunk_t>* fl) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1099 _dict_returned_bytes += fl->returned_bytes(); |
6026 | 1100 } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1101 size_t dict_returned_bytes() { return _dict_returned_bytes; } |
6026 | 1102 }; |
0 | 1103 |
6885 | 1104 template <class Chunk_t, template <class> class FreeList_t> |
1105 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::sum_dict_returned_bytes() { | |
1106 ReturnedBytesClosure<Chunk_t, FreeList_t> rbc; | |
6026 | 1107 rbc.do_tree(root()); |
0 | 1108 |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1109 return rbc.dict_returned_bytes(); |
6026 | 1110 } |
0 | 1111 |
6026 | 1112 // Count the number of entries in the tree. |
6885 | 1113 template <class Chunk_t, template <class> class FreeList_t> |
1114 class treeCountClosure : public DescendTreeCensusClosure<Chunk_t, FreeList_t> { | |
6026 | 1115 public: |
1116 uint count; | |
1117 treeCountClosure(uint c) { count = c; } | |
6885 | 1118 void do_list(FreeList_t<Chunk_t>* fl) { |
6026 | 1119 count++; |
1120 } | |
1121 }; | |
0 | 1122 |
6885 | 1123 template <class Chunk_t, template <class> class FreeList_t> |
1124 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::total_count() { | |
1125 treeCountClosure<Chunk_t, FreeList_t> ctc(0); | |
6026 | 1126 ctc.do_tree(root()); |
1127 return ctc.count; | |
1128 } | |
1129 #endif // PRODUCT | |
0 | 1130 |
1131 // Calculate surpluses for the lists in the tree. | |
6885 | 1132 template <class Chunk_t, template <class> class FreeList_t> |
1133 class setTreeSurplusClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 1134 double percentage; |
1135 public: | |
1136 setTreeSurplusClosure(double v) { percentage = v; } | |
6885 | 1137 void do_list(FreeList<Chunk_t>* fl) {} |
1138 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1139 #if INCLUDE_ALL_GCS |
6885 | 1140 void do_list(AdaptiveFreeList<Chunk_t>* fl) { |
0 | 1141 double splitSurplusPercent = percentage; |
1142 fl->set_surplus(fl->count() - | |
1143 (ssize_t)((double)fl->desired() * splitSurplusPercent)); | |
1144 } | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1145 #endif // INCLUDE_ALL_GCS |
0 | 1146 }; |
1147 | |
6885 | 1148 template <class Chunk_t, template <class> class FreeList_t> |
1149 void BinaryTreeDictionary<Chunk_t, FreeList_t>::set_tree_surplus(double splitSurplusPercent) { | |
1150 setTreeSurplusClosure<Chunk_t, FreeList_t> sts(splitSurplusPercent); | |
0 | 1151 sts.do_tree(root()); |
1152 } | |
1153 | |
1154 // Set hints for the lists in the tree. | |
6885 | 1155 template <class Chunk_t, template <class> class FreeList_t> |
1156 class setTreeHintsClosure : public DescendTreeCensusClosure<Chunk_t, FreeList_t> { | |
0 | 1157 size_t hint; |
1158 public: | |
1159 setTreeHintsClosure(size_t v) { hint = v; } | |
6885 | 1160 void do_list(FreeList<Chunk_t>* fl) {} |
1161 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1162 #if INCLUDE_ALL_GCS |
6885 | 1163 void do_list(AdaptiveFreeList<Chunk_t>* fl) { |
0 | 1164 fl->set_hint(hint); |
1165 assert(fl->hint() == 0 || fl->hint() > fl->size(), | |
1166 "Current hint is inconsistent"); | |
1167 if (fl->surplus() > 0) { | |
1168 hint = fl->size(); | |
1169 } | |
1170 } | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1171 #endif // INCLUDE_ALL_GCS |
0 | 1172 }; |
1173 | |
6885 | 1174 template <class Chunk_t, template <class> class FreeList_t> |
1175 void BinaryTreeDictionary<Chunk_t, FreeList_t>::set_tree_hints(void) { | |
1176 setTreeHintsClosure<Chunk_t, FreeList_t> sth(0); | |
0 | 1177 sth.do_tree(root()); |
1178 } | |
1179 | |
1180 // Save count before previous sweep and splits and coalesces. | |
6885 | 1181 template <class Chunk_t, template <class> class FreeList_t> |
1182 class clearTreeCensusClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
1183 void do_list(FreeList<Chunk_t>* fl) {} | |
1184 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1185 #if INCLUDE_ALL_GCS |
6885 | 1186 void do_list(AdaptiveFreeList<Chunk_t>* fl) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1187 fl->set_prev_sweep(fl->count()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1188 fl->set_coal_births(0); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1189 fl->set_coal_deaths(0); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1190 fl->set_split_births(0); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1191 fl->set_split_deaths(0); |
0 | 1192 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1193 #endif // INCLUDE_ALL_GCS |
0 | 1194 }; |
1195 | |
6885 | 1196 template <class Chunk_t, template <class> class FreeList_t> |
1197 void BinaryTreeDictionary<Chunk_t, FreeList_t>::clear_tree_census(void) { | |
1198 clearTreeCensusClosure<Chunk_t, FreeList_t> ctc; | |
0 | 1199 ctc.do_tree(root()); |
1200 } | |
1201 | |
1202 // Do reporting and post sweep clean up. | |
6885 | 1203 template <class Chunk_t, template <class> class FreeList_t> |
1204 void BinaryTreeDictionary<Chunk_t, FreeList_t>::end_sweep_dict_census(double splitSurplusPercent) { | |
0 | 1205 // Does walking the tree 3 times hurt? |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1206 set_tree_surplus(splitSurplusPercent); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1207 set_tree_hints(); |
0 | 1208 if (PrintGC && Verbose) { |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1209 report_statistics(); |
0 | 1210 } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1211 clear_tree_census(); |
0 | 1212 } |
1213 | |
1214 // Print summary statistics | |
6885 | 1215 template <class Chunk_t, template <class> class FreeList_t> |
1216 void BinaryTreeDictionary<Chunk_t, FreeList_t>::report_statistics() const { | |
1217 FreeBlockDictionary<Chunk_t>::verify_par_locked(); | |
0 | 1218 gclog_or_tty->print("Statistics for BinaryTreeDictionary:\n" |
1219 "------------------------------------\n"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1220 size_t total_size = total_chunk_size(debug_only(NULL)); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1221 size_t free_blocks = num_free_blocks(); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1222 gclog_or_tty->print("Total Free Space: %d\n", total_size); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1223 gclog_or_tty->print("Max Chunk Size: %d\n", max_chunk_size()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1224 gclog_or_tty->print("Number of Blocks: %d\n", free_blocks); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1225 if (free_blocks > 0) { |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1226 gclog_or_tty->print("Av. Block Size: %d\n", total_size/free_blocks); |
0 | 1227 } |
6885 | 1228 gclog_or_tty->print("Tree Height: %d\n", tree_height()); |
0 | 1229 } |
1230 | |
1231 // Print census information - counts, births, deaths, etc. | |
1232 // for each list in the tree. Also print some summary | |
1233 // information. | |
6885 | 1234 template <class Chunk_t, template <class> class FreeList_t> |
1235 class PrintTreeCensusClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1236 int _print_line; |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1237 size_t _total_free; |
6885 | 1238 FreeList_t<Chunk_t> _total; |
0 | 1239 |
1240 public: | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1241 PrintTreeCensusClosure() { |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1242 _print_line = 0; |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1243 _total_free = 0; |
0 | 1244 } |
6885 | 1245 FreeList_t<Chunk_t>* total() { return &_total; } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1246 size_t total_free() { return _total_free; } |
6885 | 1247 void do_list(FreeList<Chunk_t>* fl) { |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1248 if (++_print_line >= 40) { |
6885 | 1249 FreeList_t<Chunk_t>::print_labels_on(gclog_or_tty, "size"); |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1250 _print_line = 0; |
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1251 } |
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1252 fl->print_on(gclog_or_tty); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1253 _total_free += fl->count() * fl->size() ; |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1254 total()->set_count( total()->count() + fl->count() ); |
6885 | 1255 } |
1256 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1257 #if INCLUDE_ALL_GCS |
6885 | 1258 void do_list(AdaptiveFreeList<Chunk_t>* fl) { |
1259 if (++_print_line >= 40) { | |
1260 FreeList_t<Chunk_t>::print_labels_on(gclog_or_tty, "size"); | |
1261 _print_line = 0; | |
1262 } | |
1263 fl->print_on(gclog_or_tty); | |
1264 _total_free += fl->count() * fl->size() ; | |
1265 total()->set_count( total()->count() + fl->count() ); | |
1266 total()->set_bfr_surp( total()->bfr_surp() + fl->bfr_surp() ); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1267 total()->set_surplus( total()->split_deaths() + fl->surplus() ); |
6885 | 1268 total()->set_desired( total()->desired() + fl->desired() ); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1269 total()->set_prev_sweep( total()->prev_sweep() + fl->prev_sweep() ); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1270 total()->set_before_sweep(total()->before_sweep() + fl->before_sweep()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1271 total()->set_coal_births( total()->coal_births() + fl->coal_births() ); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1272 total()->set_coal_deaths( total()->coal_deaths() + fl->coal_deaths() ); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1273 total()->set_split_births(total()->split_births() + fl->split_births()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1274 total()->set_split_deaths(total()->split_deaths() + fl->split_deaths()); |
0 | 1275 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1276 #endif // INCLUDE_ALL_GCS |
0 | 1277 }; |
1278 | |
6885 | 1279 template <class Chunk_t, template <class> class FreeList_t> |
1280 void BinaryTreeDictionary<Chunk_t, FreeList_t>::print_dict_census(void) const { | |
0 | 1281 |
1282 gclog_or_tty->print("\nBinaryTree\n"); | |
6885 | 1283 FreeList_t<Chunk_t>::print_labels_on(gclog_or_tty, "size"); |
1284 PrintTreeCensusClosure<Chunk_t, FreeList_t> ptc; | |
0 | 1285 ptc.do_tree(root()); |
1286 | |
6885 | 1287 FreeList_t<Chunk_t>* total = ptc.total(); |
1288 FreeList_t<Chunk_t>::print_labels_on(gclog_or_tty, " "); | |
1289 } | |
1290 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1291 #if INCLUDE_ALL_GCS |
6885 | 1292 template <> |
7947
3c327c2b6782
8004895: NPG: JMapPermCore test failure caused by warnings about missing field
jmasa
parents:
7446
diff
changeset
|
1293 void AFLBinaryTreeDictionary::print_dict_census(void) const { |
6885 | 1294 |
1295 gclog_or_tty->print("\nBinaryTree\n"); | |
1296 AdaptiveFreeList<FreeChunk>::print_labels_on(gclog_or_tty, "size"); | |
1297 PrintTreeCensusClosure<FreeChunk, AdaptiveFreeList> ptc; | |
1298 ptc.do_tree(root()); | |
1299 | |
1300 AdaptiveFreeList<FreeChunk>* total = ptc.total(); | |
1301 AdaptiveFreeList<FreeChunk>::print_labels_on(gclog_or_tty, " "); | |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1302 total->print_on(gclog_or_tty, "TOTAL\t"); |
0 | 1303 gclog_or_tty->print( |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1304 "total_free(words): " SIZE_FORMAT_W(16) |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1305 " growth: %8.5f deficit: %8.5f\n", |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1306 ptc.total_free(), |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1307 (double)(total->split_births() + total->coal_births() |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1308 - total->split_deaths() - total->coal_deaths()) |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1309 /(total->prev_sweep() != 0 ? (double)total->prev_sweep() : 1.0), |
12
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1310 (double)(total->desired() - total->count()) |
6432c3bb6240
6668743: CMS: Consolidate block statistics reporting code
ysr
parents:
0
diff
changeset
|
1311 /(total->desired() != 0 ? (double)total->desired() : 1.0)); |
0 | 1312 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1313 #endif // INCLUDE_ALL_GCS |
0 | 1314 |
6885 | 1315 template <class Chunk_t, template <class> class FreeList_t> |
1316 class PrintFreeListsClosure : public AscendTreeCensusClosure<Chunk_t, FreeList_t> { | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1317 outputStream* _st; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1318 int _print_line; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1319 |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1320 public: |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1321 PrintFreeListsClosure(outputStream* st) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1322 _st = st; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1323 _print_line = 0; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1324 } |
6885 | 1325 void do_list(FreeList_t<Chunk_t>* fl) { |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1326 if (++_print_line >= 40) { |
6885 | 1327 FreeList_t<Chunk_t>::print_labels_on(_st, "size"); |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1328 _print_line = 0; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1329 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1330 fl->print_on(gclog_or_tty); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1331 size_t sz = fl->size(); |
6885 | 1332 for (Chunk_t* fc = fl->head(); fc != NULL; |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1333 fc = fc->next()) { |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1334 _st->print_cr("\t[" PTR_FORMAT "," PTR_FORMAT ") %s", |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1335 fc, (HeapWord*)fc + sz, |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1336 fc->cantCoalesce() ? "\t CC" : ""); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1337 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1338 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1339 }; |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1340 |
6885 | 1341 template <class Chunk_t, template <class> class FreeList_t> |
1342 void BinaryTreeDictionary<Chunk_t, FreeList_t>::print_free_lists(outputStream* st) const { | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1343 |
6885 | 1344 FreeList_t<Chunk_t>::print_labels_on(st, "size"); |
1345 PrintFreeListsClosure<Chunk_t, FreeList_t> pflc(st); | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1346 pflc.do_tree(root()); |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1347 } |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
269
diff
changeset
|
1348 |
0 | 1349 // Verify the following tree invariants: |
1350 // . _root has no parent | |
1351 // . parent and child point to each other | |
1352 // . each node's key correctly related to that of its child(ren) | |
6885 | 1353 template <class Chunk_t, template <class> class FreeList_t> |
1354 void BinaryTreeDictionary<Chunk_t, FreeList_t>::verify_tree() const { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1355 guarantee(root() == NULL || total_free_blocks() == 0 || |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1356 total_size() != 0, "_total_size should't be 0?"); |
0 | 1357 guarantee(root() == NULL || root()->parent() == NULL, "_root shouldn't have parent"); |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1358 verify_tree_helper(root()); |
0 | 1359 } |
1360 | |
6885 | 1361 template <class Chunk_t, template <class> class FreeList_t> |
1362 size_t BinaryTreeDictionary<Chunk_t, FreeList_t>::verify_prev_free_ptrs(TreeList<Chunk_t, FreeList_t>* tl) { | |
0 | 1363 size_t ct = 0; |
6885 | 1364 for (Chunk_t* curFC = tl->head(); curFC != NULL; curFC = curFC->next()) { |
0 | 1365 ct++; |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1366 assert(curFC->prev() == NULL || curFC->prev()->is_free(), |
0 | 1367 "Chunk should be free"); |
1368 } | |
1369 return ct; | |
1370 } | |
1371 | |
1372 // Note: this helper is recursive rather than iterative, so use with | |
1373 // caution on very deep trees; and watch out for stack overflow errors; | |
1374 // In general, to be used only for debugging. | |
6885 | 1375 template <class Chunk_t, template <class> class FreeList_t> |
1376 void BinaryTreeDictionary<Chunk_t, FreeList_t>::verify_tree_helper(TreeList<Chunk_t, FreeList_t>* tl) const { | |
0 | 1377 if (tl == NULL) |
1378 return; | |
1379 guarantee(tl->size() != 0, "A list must has a size"); | |
1380 guarantee(tl->left() == NULL || tl->left()->parent() == tl, | |
1381 "parent<-/->left"); | |
1382 guarantee(tl->right() == NULL || tl->right()->parent() == tl, | |
1383 "parent<-/->right");; | |
1384 guarantee(tl->left() == NULL || tl->left()->size() < tl->size(), | |
1385 "parent !> left"); | |
1386 guarantee(tl->right() == NULL || tl->right()->size() > tl->size(), | |
1387 "parent !< left"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1388 guarantee(tl->head() == NULL || tl->head()->is_free(), "!Free"); |
0 | 1389 guarantee(tl->head() == NULL || tl->head_as_TreeChunk()->list() == tl, |
1390 "list inconsistency"); | |
1391 guarantee(tl->count() > 0 || (tl->head() == NULL && tl->tail() == NULL), | |
1392 "list count is inconsistent"); | |
1393 guarantee(tl->count() > 1 || tl->head() == tl->tail(), | |
1394 "list is incorrectly constructed"); | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1395 size_t count = verify_prev_free_ptrs(tl); |
0 | 1396 guarantee(count == (size_t)tl->count(), "Node count is incorrect"); |
1397 if (tl->head() != NULL) { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1398 tl->head_as_TreeChunk()->verify_tree_chunk_list(); |
0 | 1399 } |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1400 verify_tree_helper(tl->left()); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1401 verify_tree_helper(tl->right()); |
0 | 1402 } |
1403 | |
6885 | 1404 template <class Chunk_t, template <class> class FreeList_t> |
1405 void BinaryTreeDictionary<Chunk_t, FreeList_t>::verify() const { | |
6028
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1406 verify_tree(); |
f69a5d43dc19
7164144: Fix variable naming style in freeBlockDictionary.* and binaryTreeDictionary*
jmasa
parents:
6026
diff
changeset
|
1407 guarantee(total_size() == total_size_in_tree(root()), "Total Size inconsistency"); |
0 | 1408 } |
6026 | 1409 |
6885 | 1410 template class TreeList<Metablock, FreeList>; |
1411 template class BinaryTreeDictionary<Metablock, FreeList>; | |
1412 template class TreeChunk<Metablock, FreeList>; | |
1413 | |
1414 template class TreeList<Metachunk, FreeList>; | |
1415 template class BinaryTreeDictionary<Metachunk, FreeList>; | |
1416 template class TreeChunk<Metachunk, FreeList>; | |
1417 | |
1418 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1419 #if INCLUDE_ALL_GCS |
6026 | 1420 // Explicitly instantiate these types for FreeChunk. |
6885 | 1421 template class TreeList<FreeChunk, AdaptiveFreeList>; |
1422 template class BinaryTreeDictionary<FreeChunk, AdaptiveFreeList>; | |
1423 template class TreeChunk<FreeChunk, AdaptiveFreeList>; | |
1424 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7446
diff
changeset
|
1425 #endif // INCLUDE_ALL_GCS |