Mercurial > hg > truffle
annotate src/share/vm/oops/cpCacheKlass.cpp @ 2137:ffd725ff6943
Merge
author | johnc |
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date | Thu, 13 Jan 2011 17:19:21 -0800 |
parents | f95d63e2154a |
children | c5a923563727 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, 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
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "gc_implementation/shared/markSweep.inline.hpp" | |
28 #include "gc_interface/collectedHeap.hpp" | |
29 #include "interpreter/bytecodes.hpp" | |
30 #include "memory/genOopClosures.inline.hpp" | |
31 #include "memory/permGen.hpp" | |
32 #include "oops/constantPoolOop.hpp" | |
33 #include "oops/cpCacheKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "runtime/handles.inline.hpp" | |
36 #ifndef SERIALGC | |
37 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
38 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
39 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
40 #include "memory/cardTableRS.hpp" | |
41 #include "oops/oop.pcgc.inline.hpp" | |
42 #endif | |
0 | 43 |
44 | |
45 int constantPoolCacheKlass::oop_size(oop obj) const { | |
46 assert(obj->is_constantPoolCache(), "must be constantPool"); | |
47 return constantPoolCacheOop(obj)->object_size(); | |
48 } | |
49 | |
50 | |
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51 constantPoolCacheOop constantPoolCacheKlass::allocate(int length, |
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52 bool is_conc_safe, |
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53 TRAPS) { |
0 | 54 // allocate memory |
55 int size = constantPoolCacheOopDesc::object_size(length); | |
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56 |
0 | 57 KlassHandle klass (THREAD, as_klassOop()); |
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58 |
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59 // This is the original code. The code from permanent_obj_allocate() |
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60 // was in-lined to allow the setting of is_conc_safe before the klass |
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61 // is installed. |
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62 // constantPoolCacheOop cache = (constantPoolCacheOop) |
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63 // CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL); |
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64 |
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65 oop obj = CollectedHeap::permanent_obj_allocate_no_klass_install(klass, size, CHECK_NULL); |
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66 constantPoolCacheOop cache = (constantPoolCacheOop) obj; |
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67 cache->set_is_conc_safe(is_conc_safe); |
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68 // The store to is_conc_safe must be visible before the klass |
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69 // is set. This should be done safely because _is_conc_safe has |
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70 // been declared volatile. If there are any problems, consider adding |
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71 // OrderAccess::storestore(); |
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72 CollectedHeap::post_allocation_install_obj_klass(klass, obj, size); |
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73 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value((HeapWord*) obj, |
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74 size)); |
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75 |
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76 // The length field affects the size of the object. The allocation |
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77 // above allocates the correct size (see calculation of "size") but |
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78 // the size() method of the constant pool cache oop will not reflect |
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79 // that size until the correct length is set. |
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80 cache->set_length(length); |
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81 |
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82 // The store of the length must be visible before is_conc_safe is |
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83 // set to a safe state. |
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84 // This should be done safely because _is_conc_safe has |
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85 // been declared volatile. If there are any problems, consider adding |
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86 // OrderAccess::storestore(); |
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87 cache->set_is_conc_safe(methodOopDesc::IsSafeConc); |
0 | 88 cache->set_constant_pool(NULL); |
89 return cache; | |
90 } | |
91 | |
92 klassOop constantPoolCacheKlass::create_klass(TRAPS) { | |
93 constantPoolCacheKlass o; | |
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94 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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95 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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96 // Make sure size calculation is right |
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97 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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98 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
0 | 99 return k(); |
100 } | |
101 | |
102 | |
103 void constantPoolCacheKlass::oop_follow_contents(oop obj) { | |
104 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
105 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
106 // Performance tweak: We skip iterating over the klass pointer since we | |
107 // know that Universe::constantPoolCacheKlassObj never moves. | |
108 // gc of constant pool cache instance variables | |
109 MarkSweep::mark_and_push((oop*)cache->constant_pool_addr()); | |
110 // gc of constant pool cache entries | |
111 int i = cache->length(); | |
112 while (i-- > 0) cache->entry_at(i)->follow_contents(); | |
113 } | |
114 | |
115 #ifndef SERIALGC | |
116 void constantPoolCacheKlass::oop_follow_contents(ParCompactionManager* cm, | |
117 oop obj) { | |
118 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
119 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
120 // Performance tweak: We skip iterating over the klass pointer since we | |
121 // know that Universe::constantPoolCacheKlassObj never moves. | |
122 // gc of constant pool cache instance variables | |
123 PSParallelCompact::mark_and_push(cm, (oop*)cache->constant_pool_addr()); | |
124 // gc of constant pool cache entries | |
125 int i = cache->length(); | |
126 while (i-- > 0) cache->entry_at(i)->follow_contents(cm); | |
127 } | |
128 #endif // SERIALGC | |
129 | |
130 | |
131 int constantPoolCacheKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
132 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
133 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
134 // Get size before changing pointers. | |
135 // Don't call size() or oop_size() since that is a virtual call. | |
136 int size = cache->object_size(); | |
137 // Performance tweak: We skip iterating over the klass pointer since we | |
138 // know that Universe::constantPoolCacheKlassObj never moves. | |
139 // iteration over constant pool cache instance variables | |
140 blk->do_oop((oop*)cache->constant_pool_addr()); | |
141 // iteration over constant pool cache entries | |
142 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate(blk); | |
143 return size; | |
144 } | |
145 | |
146 | |
147 int constantPoolCacheKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
148 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
149 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
150 // Get size before changing pointers. | |
151 // Don't call size() or oop_size() since that is a virtual call. | |
152 int size = cache->object_size(); | |
153 // Performance tweak: We skip iterating over the klass pointer since we | |
154 // know that Universe::constantPoolCacheKlassObj never moves. | |
155 // iteration over constant pool cache instance variables | |
156 oop* addr = (oop*)cache->constant_pool_addr(); | |
157 if (mr.contains(addr)) blk->do_oop(addr); | |
158 // iteration over constant pool cache entries | |
159 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate_m(blk, mr); | |
160 return size; | |
161 } | |
162 | |
163 int constantPoolCacheKlass::oop_adjust_pointers(oop obj) { | |
164 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
165 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
166 // Get size before changing pointers. | |
167 // Don't call size() or oop_size() since that is a virtual call. | |
168 int size = cache->object_size(); | |
169 // Performance tweak: We skip iterating over the klass pointer since we | |
170 // know that Universe::constantPoolCacheKlassObj never moves. | |
171 // Iteration over constant pool cache instance variables | |
172 MarkSweep::adjust_pointer((oop*)cache->constant_pool_addr()); | |
173 // iteration over constant pool cache entries | |
174 for (int i = 0; i < cache->length(); i++) | |
175 cache->entry_at(i)->adjust_pointers(); | |
176 return size; | |
177 } | |
178 | |
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179 bool constantPoolCacheKlass::oop_is_conc_safe(oop obj) const { |
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180 assert(obj->is_constantPoolCache(), "should be constant pool"); |
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181 return constantPoolCacheOop(obj)->is_conc_safe(); |
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182 } |
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183 |
0 | 184 #ifndef SERIALGC |
185 void constantPoolCacheKlass::oop_push_contents(PSPromotionManager* pm, | |
186 oop obj) { | |
187 assert(obj->is_constantPoolCache(), "should be constant pool"); | |
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188 if (EnableInvokeDynamic) { |
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189 constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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190 // during a scavenge, it is safe to inspect my pool, since it is perm |
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191 constantPoolOop pool = cache->constant_pool(); |
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192 assert(pool->is_constantPool(), "should be constant pool"); |
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193 if (pool->has_invokedynamic()) { |
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194 for (int i = 0; i < cache->length(); i++) { |
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195 ConstantPoolCacheEntry* e = cache->entry_at(i); |
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196 oop* p = (oop*)&e->_f1; |
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197 if (e->is_secondary_entry()) { |
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198 if (PSScavenge::should_scavenge(p)) |
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199 pm->claim_or_forward_depth(p); |
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200 assert(!(e->is_vfinal() && PSScavenge::should_scavenge((oop*)&e->_f2)), |
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201 "no live oops here"); |
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202 } |
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203 } |
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204 } |
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205 } |
0 | 206 } |
207 | |
208 int | |
209 constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
210 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
211 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
212 | |
213 // Iteration over constant pool cache instance variables | |
214 PSParallelCompact::adjust_pointer((oop*)cache->constant_pool_addr()); | |
215 | |
216 // iteration over constant pool cache entries | |
217 for (int i = 0; i < cache->length(); ++i) { | |
218 cache->entry_at(i)->update_pointers(); | |
219 } | |
220 | |
221 return cache->object_size(); | |
222 } | |
223 | |
224 int | |
225 constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, | |
226 HeapWord* beg_addr, | |
227 HeapWord* end_addr) { | |
228 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
229 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
230 | |
231 // Iteration over constant pool cache instance variables | |
232 oop* p; | |
233 p = (oop*)cache->constant_pool_addr(); | |
234 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
235 | |
236 // Iteration over constant pool cache entries | |
237 for (int i = 0; i < cache->length(); ++i) { | |
238 cache->entry_at(i)->update_pointers(beg_addr, end_addr); | |
239 } | |
240 return cache->object_size(); | |
241 } | |
242 #endif // SERIALGC | |
243 | |
244 void constantPoolCacheKlass::oop_print_on(oop obj, outputStream* st) { | |
245 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
246 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
247 // super print | |
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248 Klass::oop_print_on(obj, st); |
0 | 249 // print constant pool cache entries |
250 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->print(st, i); | |
251 } | |
252 | |
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253 void constantPoolCacheKlass::oop_print_value_on(oop obj, outputStream* st) { |
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254 assert(obj->is_constantPoolCache(), "obj must be constant pool cache"); |
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255 constantPoolCacheOop cache = (constantPoolCacheOop)obj; |
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256 st->print("cache [%d]", cache->length()); |
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257 cache->print_address_on(st); |
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258 st->print(" for "); |
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259 cache->constant_pool()->print_value_on(st); |
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260 } |
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261 |
0 | 262 void constantPoolCacheKlass::oop_verify_on(oop obj, outputStream* st) { |
263 guarantee(obj->is_constantPoolCache(), "obj must be constant pool cache"); | |
264 constantPoolCacheOop cache = (constantPoolCacheOop)obj; | |
265 // super verify | |
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266 Klass::oop_verify_on(obj, st); |
0 | 267 // print constant pool cache entries |
268 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->verify(st); | |
269 } | |
270 | |
271 | |
272 const char* constantPoolCacheKlass::internal_name() const { | |
273 return "{constant pool cache}"; | |
274 } |