Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolKlass.cpp @ 4530:6c6cb7be1324
bugfix
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Wed, 08 Feb 2012 21:13:35 -0800 |
parents | c9a03402fe56 |
children |
rev | line source |
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0 | 1 /* |
2227 | 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "gc_implementation/shared/markSweep.inline.hpp" | |
28 #include "gc_interface/collectedHeap.inline.hpp" | |
29 #include "memory/oopFactory.hpp" | |
30 #include "memory/permGen.hpp" | |
31 #include "memory/universe.inline.hpp" | |
32 #include "oops/constantPoolKlass.hpp" | |
33 #include "oops/constantPoolOop.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "oops/oop.inline2.hpp" | |
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36 #include "oops/symbol.hpp" |
1972 | 37 #include "runtime/handles.inline.hpp" |
38 #ifdef TARGET_OS_FAMILY_linux | |
39 # include "thread_linux.inline.hpp" | |
40 #endif | |
41 #ifdef TARGET_OS_FAMILY_solaris | |
42 # include "thread_solaris.inline.hpp" | |
43 #endif | |
44 #ifdef TARGET_OS_FAMILY_windows | |
45 # include "thread_windows.inline.hpp" | |
46 #endif | |
3960 | 47 #ifdef TARGET_OS_FAMILY_bsd |
48 # include "thread_bsd.inline.hpp" | |
49 #endif | |
1972 | 50 #ifndef SERIALGC |
51 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
52 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
53 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
54 #include "memory/cardTableRS.hpp" | |
55 #include "oops/oop.pcgc.inline.hpp" | |
56 #endif | |
0 | 57 |
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58 constantPoolOop constantPoolKlass::allocate(int length, bool is_conc_safe, TRAPS) { |
0 | 59 int size = constantPoolOopDesc::object_size(length); |
60 KlassHandle klass (THREAD, as_klassOop()); | |
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61 assert(klass()->is_oop(), "Can't be null, else handlizing of c below won't work"); |
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62 constantPoolHandle pool; |
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63 { |
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64 constantPoolOop c = |
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65 (constantPoolOop)CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL); |
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66 assert(c->klass_or_null() != NULL, "Handlizing below won't work"); |
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67 pool = constantPoolHandle(THREAD, c); |
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68 } |
0 | 69 |
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70 pool->set_length(length); |
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71 pool->set_tags(NULL); |
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72 pool->set_cache(NULL); |
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73 pool->set_operands(NULL); |
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74 pool->set_pool_holder(NULL); |
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75 pool->set_flags(0); |
0 | 76 // only set to non-zero if constant pool is merged by RedefineClasses |
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77 pool->set_orig_length(0); |
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78 // if constant pool may change during RedefineClasses, it is created |
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79 // unsafe for GC concurrent processing. |
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80 pool->set_is_conc_safe(is_conc_safe); |
0 | 81 // all fields are initialized; needed for GC |
82 | |
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83 // Note: because we may be in this "conc_unsafe" state when allocating |
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84 // t_oop below, which may in turn cause a GC, it is imperative that our |
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85 // size be correct, consistent and henceforth stable, at this stage. |
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86 assert(pool->is_oop() && pool->is_parsable(), "Else size() below is unreliable"); |
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87 assert(size == pool->size(), "size() is wrong"); |
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88 |
0 | 89 // initialize tag array |
90 typeArrayOop t_oop = oopFactory::new_permanent_byteArray(length, CHECK_NULL); | |
91 typeArrayHandle tags (THREAD, t_oop); | |
92 for (int index = 0; index < length; index++) { | |
93 tags()->byte_at_put(index, JVM_CONSTANT_Invalid); | |
94 } | |
95 pool->set_tags(tags()); | |
96 | |
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97 // Check that our size was stable at its old value. |
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98 assert(size == pool->size(), "size() changed"); |
0 | 99 return pool(); |
100 } | |
101 | |
102 klassOop constantPoolKlass::create_klass(TRAPS) { | |
103 constantPoolKlass o; | |
113
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104 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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105 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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106 // Make sure size calculation is right |
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107 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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108 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
0 | 109 return k(); |
110 } | |
111 | |
112 int constantPoolKlass::oop_size(oop obj) const { | |
113 assert(obj->is_constantPool(), "must be constantPool"); | |
114 return constantPoolOop(obj)->object_size(); | |
115 } | |
116 | |
117 | |
118 void constantPoolKlass::oop_follow_contents(oop obj) { | |
119 assert (obj->is_constantPool(), "obj must be constant pool"); | |
120 constantPoolOop cp = (constantPoolOop) obj; | |
121 // Performance tweak: We skip iterating over the klass pointer since we | |
122 // know that Universe::constantPoolKlassObj never moves. | |
123 | |
124 // If the tags array is null we are in the middle of allocating this constant pool | |
125 if (cp->tags() != NULL) { | |
126 // gc of constant pool contents | |
127 oop* base = (oop*)cp->base(); | |
128 for (int i = 0; i < cp->length(); i++) { | |
129 if (cp->is_pointer_entry(i)) { | |
130 if (*base != NULL) MarkSweep::mark_and_push(base); | |
131 } | |
132 base++; | |
133 } | |
134 // gc of constant pool instance variables | |
135 MarkSweep::mark_and_push(cp->tags_addr()); | |
136 MarkSweep::mark_and_push(cp->cache_addr()); | |
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137 MarkSweep::mark_and_push(cp->operands_addr()); |
0 | 138 MarkSweep::mark_and_push(cp->pool_holder_addr()); |
139 } | |
140 } | |
141 | |
142 #ifndef SERIALGC | |
143 void constantPoolKlass::oop_follow_contents(ParCompactionManager* cm, | |
144 oop obj) { | |
145 assert (obj->is_constantPool(), "obj must be constant pool"); | |
146 constantPoolOop cp = (constantPoolOop) obj; | |
147 // Performance tweak: We skip iterating over the klass pointer since we | |
148 // know that Universe::constantPoolKlassObj never moves. | |
149 | |
150 // If the tags array is null we are in the middle of allocating this constant | |
151 // pool. | |
152 if (cp->tags() != NULL) { | |
153 // gc of constant pool contents | |
154 oop* base = (oop*)cp->base(); | |
155 for (int i = 0; i < cp->length(); i++) { | |
156 if (cp->is_pointer_entry(i)) { | |
157 if (*base != NULL) PSParallelCompact::mark_and_push(cm, base); | |
158 } | |
159 base++; | |
160 } | |
161 // gc of constant pool instance variables | |
162 PSParallelCompact::mark_and_push(cm, cp->tags_addr()); | |
163 PSParallelCompact::mark_and_push(cm, cp->cache_addr()); | |
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164 PSParallelCompact::mark_and_push(cm, cp->operands_addr()); |
0 | 165 PSParallelCompact::mark_and_push(cm, cp->pool_holder_addr()); |
166 } | |
167 } | |
168 #endif // SERIALGC | |
169 | |
170 | |
171 int constantPoolKlass::oop_adjust_pointers(oop obj) { | |
172 assert (obj->is_constantPool(), "obj must be constant pool"); | |
173 constantPoolOop cp = (constantPoolOop) obj; | |
174 // Get size before changing pointers. | |
175 // Don't call size() or oop_size() since that is a virtual call. | |
176 int size = cp->object_size(); | |
177 // Performance tweak: We skip iterating over the klass pointer since we | |
178 // know that Universe::constantPoolKlassObj never moves. | |
179 | |
180 // If the tags array is null we are in the middle of allocating this constant | |
181 // pool. | |
182 if (cp->tags() != NULL) { | |
183 oop* base = (oop*)cp->base(); | |
184 for (int i = 0; i< cp->length(); i++) { | |
185 if (cp->is_pointer_entry(i)) { | |
186 MarkSweep::adjust_pointer(base); | |
187 } | |
188 base++; | |
189 } | |
190 } | |
191 MarkSweep::adjust_pointer(cp->tags_addr()); | |
192 MarkSweep::adjust_pointer(cp->cache_addr()); | |
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193 MarkSweep::adjust_pointer(cp->operands_addr()); |
0 | 194 MarkSweep::adjust_pointer(cp->pool_holder_addr()); |
195 return size; | |
196 } | |
197 | |
198 | |
199 int constantPoolKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
200 assert (obj->is_constantPool(), "obj must be constant pool"); | |
201 // Performance tweak: We skip iterating over the klass pointer since we | |
202 // know that Universe::constantPoolKlassObj never moves. | |
203 constantPoolOop cp = (constantPoolOop) obj; | |
204 // Get size before changing pointers. | |
205 // Don't call size() or oop_size() since that is a virtual call. | |
206 int size = cp->object_size(); | |
207 | |
208 // If the tags array is null we are in the middle of allocating this constant | |
209 // pool. | |
210 if (cp->tags() != NULL) { | |
211 oop* base = (oop*)cp->base(); | |
212 for (int i = 0; i < cp->length(); i++) { | |
213 if (cp->is_pointer_entry(i)) { | |
214 blk->do_oop(base); | |
215 } | |
216 base++; | |
217 } | |
218 } | |
219 blk->do_oop(cp->tags_addr()); | |
220 blk->do_oop(cp->cache_addr()); | |
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221 blk->do_oop(cp->operands_addr()); |
0 | 222 blk->do_oop(cp->pool_holder_addr()); |
223 return size; | |
224 } | |
225 | |
226 | |
227 int constantPoolKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
228 assert (obj->is_constantPool(), "obj must be constant pool"); | |
229 // Performance tweak: We skip iterating over the klass pointer since we | |
230 // know that Universe::constantPoolKlassObj never moves. | |
231 constantPoolOop cp = (constantPoolOop) obj; | |
232 // Get size before changing pointers. | |
233 // Don't call size() or oop_size() since that is a virtual call. | |
234 int size = cp->object_size(); | |
235 | |
236 // If the tags array is null we are in the middle of allocating this constant | |
237 // pool. | |
238 if (cp->tags() != NULL) { | |
239 oop* base = (oop*)cp->base(); | |
240 for (int i = 0; i < cp->length(); i++) { | |
241 if (mr.contains(base)) { | |
242 if (cp->is_pointer_entry(i)) { | |
243 blk->do_oop(base); | |
244 } | |
245 } | |
246 base++; | |
247 } | |
248 } | |
249 oop* addr; | |
250 addr = cp->tags_addr(); | |
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251 if (mr.contains(addr)) blk->do_oop(addr); |
0 | 252 addr = cp->cache_addr(); |
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253 if (mr.contains(addr)) blk->do_oop(addr); |
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254 addr = cp->operands_addr(); |
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255 if (mr.contains(addr)) blk->do_oop(addr); |
0 | 256 addr = cp->pool_holder_addr(); |
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257 if (mr.contains(addr)) blk->do_oop(addr); |
0 | 258 return size; |
259 } | |
260 | |
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261 bool constantPoolKlass::oop_is_conc_safe(oop obj) const { |
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262 assert(obj->is_constantPool(), "must be constantPool"); |
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263 return constantPoolOop(obj)->is_conc_safe(); |
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264 } |
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265 |
0 | 266 #ifndef SERIALGC |
267 int constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
268 assert (obj->is_constantPool(), "obj must be constant pool"); | |
269 constantPoolOop cp = (constantPoolOop) obj; | |
270 | |
271 // If the tags array is null we are in the middle of allocating this constant | |
272 // pool. | |
273 if (cp->tags() != NULL) { | |
274 oop* base = (oop*)cp->base(); | |
275 for (int i = 0; i < cp->length(); ++i, ++base) { | |
276 if (cp->is_pointer_entry(i)) { | |
277 PSParallelCompact::adjust_pointer(base); | |
278 } | |
279 } | |
280 } | |
281 PSParallelCompact::adjust_pointer(cp->tags_addr()); | |
282 PSParallelCompact::adjust_pointer(cp->cache_addr()); | |
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283 PSParallelCompact::adjust_pointer(cp->operands_addr()); |
0 | 284 PSParallelCompact::adjust_pointer(cp->pool_holder_addr()); |
285 return cp->object_size(); | |
286 } | |
287 | |
288 void constantPoolKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
289 assert(obj->is_constantPool(), "should be constant pool"); | |
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290 constantPoolOop cp = (constantPoolOop) obj; |
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291 if (cp->tags() != NULL) { |
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292 for (int i = 1; i < cp->length(); ++i) { |
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293 if (cp->is_pointer_entry(i)) { |
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294 oop* base = cp->obj_at_addr_raw(i); |
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295 if (PSScavenge::should_scavenge(base)) { |
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296 pm->claim_or_forward_depth(base); |
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297 } |
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298 } |
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299 } |
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300 } |
0 | 301 } |
302 #endif // SERIALGC | |
303 | |
304 // Printing | |
305 | |
306 void constantPoolKlass::oop_print_on(oop obj, outputStream* st) { | |
307 EXCEPTION_MARK; | |
308 oop anObj; | |
309 assert(obj->is_constantPool(), "must be constantPool"); | |
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310 Klass::oop_print_on(obj, st); |
0 | 311 constantPoolOop cp = constantPoolOop(obj); |
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312 if (cp->flags() != 0) { |
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313 st->print(" - flags: 0x%x", cp->flags()); |
431
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314 if (cp->has_pseudo_string()) st->print(" has_pseudo_string"); |
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315 if (cp->has_invokedynamic()) st->print(" has_invokedynamic"); |
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316 if (cp->has_preresolution()) st->print(" has_preresolution"); |
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317 st->cr(); |
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318 } |
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319 if (cp->pool_holder() != NULL) { |
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320 bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp); |
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321 st->print_cr(" - holder: " INTPTR_FORMAT "%s", cp->pool_holder(), (extra? " (extra)" : "")); |
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322 } |
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323 st->print_cr(" - cache: " INTPTR_FORMAT, cp->cache()); |
0 | 324 for (int index = 1; index < cp->length(); index++) { // Index 0 is unused |
325 st->print(" - %3d : ", index); | |
326 cp->tag_at(index).print_on(st); | |
327 st->print(" : "); | |
328 switch (cp->tag_at(index).value()) { | |
329 case JVM_CONSTANT_Class : | |
330 { anObj = cp->klass_at(index, CATCH); | |
331 anObj->print_value_on(st); | |
332 st->print(" {0x%lx}", (address)anObj); | |
333 } | |
334 break; | |
335 case JVM_CONSTANT_Fieldref : | |
336 case JVM_CONSTANT_Methodref : | |
337 case JVM_CONSTANT_InterfaceMethodref : | |
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338 st->print("klass_index=%d", cp->uncached_klass_ref_index_at(index)); |
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339 st->print(" name_and_type_index=%d", cp->uncached_name_and_type_ref_index_at(index)); |
0 | 340 break; |
341 case JVM_CONSTANT_UnresolvedString : | |
342 case JVM_CONSTANT_String : | |
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343 if (cp->is_pseudo_string_at(index)) { |
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344 anObj = cp->pseudo_string_at(index); |
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345 } else { |
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346 anObj = cp->string_at(index, CATCH); |
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347 } |
0 | 348 anObj->print_value_on(st); |
349 st->print(" {0x%lx}", (address)anObj); | |
350 break; | |
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351 case JVM_CONSTANT_Object : |
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352 anObj = cp->object_at(index); |
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353 anObj->print_value_on(st); |
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354 st->print(" {0x%lx}", (address)anObj); |
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355 break; |
0 | 356 case JVM_CONSTANT_Integer : |
357 st->print("%d", cp->int_at(index)); | |
358 break; | |
359 case JVM_CONSTANT_Float : | |
360 st->print("%f", cp->float_at(index)); | |
361 break; | |
362 case JVM_CONSTANT_Long : | |
363 st->print_jlong(cp->long_at(index)); | |
364 index++; // Skip entry following eigth-byte constant | |
365 break; | |
366 case JVM_CONSTANT_Double : | |
367 st->print("%lf", cp->double_at(index)); | |
368 index++; // Skip entry following eigth-byte constant | |
369 break; | |
370 case JVM_CONSTANT_NameAndType : | |
371 st->print("name_index=%d", cp->name_ref_index_at(index)); | |
372 st->print(" signature_index=%d", cp->signature_ref_index_at(index)); | |
373 break; | |
374 case JVM_CONSTANT_Utf8 : | |
375 cp->symbol_at(index)->print_value_on(st); | |
376 break; | |
377 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
378 case JVM_CONSTANT_UnresolvedClassInError: { | |
379 // unresolved_klass_at requires lock or safe world. | |
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380 CPSlot entry = cp->slot_at(index); |
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381 if (entry.is_oop()) { |
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382 entry.get_oop()->print_value_on(st); |
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383 } else { |
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384 entry.get_symbol()->print_value_on(st); |
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385 } |
0 | 386 } |
387 break; | |
1602 | 388 case JVM_CONSTANT_MethodHandle : |
389 st->print("ref_kind=%d", cp->method_handle_ref_kind_at(index)); | |
390 st->print(" ref_index=%d", cp->method_handle_index_at(index)); | |
391 break; | |
392 case JVM_CONSTANT_MethodType : | |
393 st->print("signature_index=%d", cp->method_type_index_at(index)); | |
394 break; | |
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395 case JVM_CONSTANT_InvokeDynamic : |
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396 { |
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397 st->print("bootstrap_method_index=%d", cp->invoke_dynamic_bootstrap_method_ref_index_at(index)); |
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398 st->print(" name_and_type_index=%d", cp->invoke_dynamic_name_and_type_ref_index_at(index)); |
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399 int argc = cp->invoke_dynamic_argument_count_at(index); |
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400 if (argc > 0) { |
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401 for (int arg_i = 0; arg_i < argc; arg_i++) { |
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402 int arg = cp->invoke_dynamic_argument_index_at(index, arg_i); |
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403 st->print((arg_i == 0 ? " arguments={%d" : ", %d"), arg); |
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404 } |
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405 st->print("}"); |
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406 } |
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407 } |
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408 break; |
0 | 409 default: |
410 ShouldNotReachHere(); | |
411 break; | |
412 } | |
413 st->cr(); | |
414 } | |
415 st->cr(); | |
416 } | |
417 | |
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418 void constantPoolKlass::oop_print_value_on(oop obj, outputStream* st) { |
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419 assert(obj->is_constantPool(), "must be constantPool"); |
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420 constantPoolOop cp = constantPoolOop(obj); |
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421 st->print("constant pool [%d]", cp->length()); |
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422 if (cp->has_pseudo_string()) st->print("/pseudo_string"); |
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423 if (cp->has_invokedynamic()) st->print("/invokedynamic"); |
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424 if (cp->has_preresolution()) st->print("/preresolution"); |
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425 if (cp->operands() != NULL) st->print("/operands[%d]", cp->operands()->length()); |
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426 cp->print_address_on(st); |
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427 st->print(" for "); |
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428 cp->pool_holder()->print_value_on(st); |
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429 if (cp->pool_holder() != NULL) { |
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430 bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp); |
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431 if (extra) st->print(" (extra)"); |
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432 } |
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433 if (cp->cache() != NULL) { |
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434 st->print(" cache=" PTR_FORMAT, cp->cache()); |
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435 } |
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436 } |
0 | 437 |
438 const char* constantPoolKlass::internal_name() const { | |
439 return "{constant pool}"; | |
440 } | |
441 | |
442 // Verification | |
443 | |
444 void constantPoolKlass::oop_verify_on(oop obj, outputStream* st) { | |
445 Klass::oop_verify_on(obj, st); | |
446 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
447 constantPoolOop cp = constantPoolOop(obj); | |
448 guarantee(cp->is_perm(), "should be in permspace"); | |
449 if (!cp->partially_loaded()) { | |
450 for (int i = 0; i< cp->length(); i++) { | |
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451 constantTag tag = cp->tag_at(i); |
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452 CPSlot entry = cp->slot_at(i); |
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453 if (tag.is_klass()) { |
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454 if (entry.is_oop()) { |
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455 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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456 guarantee(entry.get_oop()->is_klass(), "should be klass"); |
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457 } |
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458 } else if (tag.is_unresolved_klass()) { |
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459 if (entry.is_oop()) { |
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460 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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461 guarantee(entry.get_oop()->is_klass(), "should be klass"); |
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462 } |
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463 } else if (tag.is_symbol()) { |
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464 guarantee(entry.get_symbol()->refcount() != 0, "should have nonzero reference count"); |
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465 } else if (tag.is_unresolved_string()) { |
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466 if (entry.is_oop()) { |
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467 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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468 guarantee(entry.get_oop()->is_instance(), "should be instance"); |
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469 } |
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470 else { |
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471 guarantee(entry.get_symbol()->refcount() != 0, "should have nonzero reference count"); |
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472 } |
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473 } else if (tag.is_string()) { |
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474 if (!cp->has_pseudo_string()) { |
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475 if (entry.is_oop()) { |
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476 guarantee(!JavaObjectsInPerm || entry.get_oop()->is_perm(), |
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477 "should be in permspace"); |
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478 guarantee(entry.get_oop()->is_instance(), "should be instance"); |
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479 } |
431
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480 } else { |
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481 // can be non-perm, can be non-instance (array) |
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482 } |
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483 } else if (tag.is_object()) { |
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484 assert(entry.get_oop()->is_oop(), "should be some valid oop"); |
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485 } else { |
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486 assert(!cp->is_pointer_entry(i), "unhandled oop type in constantPoolKlass::verify_on"); |
0 | 487 } |
488 } | |
489 guarantee(cp->tags()->is_perm(), "should be in permspace"); | |
490 guarantee(cp->tags()->is_typeArray(), "should be type array"); | |
491 if (cp->cache() != NULL) { | |
492 // Note: cache() can be NULL before a class is completely setup or | |
493 // in temporary constant pools used during constant pool merging | |
494 guarantee(cp->cache()->is_perm(), "should be in permspace"); | |
495 guarantee(cp->cache()->is_constantPoolCache(), "should be constant pool cache"); | |
496 } | |
1913
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497 if (cp->operands() != NULL) { |
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498 guarantee(cp->operands()->is_perm(), "should be in permspace"); |
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499 guarantee(cp->operands()->is_typeArray(), "should be type array"); |
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500 } |
0 | 501 if (cp->pool_holder() != NULL) { |
502 // Note: pool_holder() can be NULL in temporary constant pools | |
503 // used during constant pool merging | |
504 guarantee(cp->pool_holder()->is_perm(), "should be in permspace"); | |
505 guarantee(cp->pool_holder()->is_klass(), "should be klass"); | |
506 } | |
507 } | |
508 } | |
509 | |
510 bool constantPoolKlass::oop_partially_loaded(oop obj) const { | |
511 assert(obj->is_constantPool(), "object must be constant pool"); | |
512 constantPoolOop cp = constantPoolOop(obj); | |
513 return cp->tags() == NULL || cp->pool_holder() == (klassOop) cp; // Check whether pool holder points to self | |
514 } | |
515 | |
516 | |
517 void constantPoolKlass::oop_set_partially_loaded(oop obj) { | |
518 assert(obj->is_constantPool(), "object must be constant pool"); | |
519 constantPoolOop cp = constantPoolOop(obj); | |
520 assert(cp->pool_holder() == NULL, "just checking"); | |
521 cp->set_pool_holder((klassOop) cp); // Temporarily set pool holder to point to self | |
522 } | |
523 | |
524 #ifndef PRODUCT | |
525 // CompileTheWorld support. Preload all classes loaded references in the passed in constantpool | |
526 void constantPoolKlass::preload_and_initialize_all_classes(oop obj, TRAPS) { | |
527 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
528 constantPoolHandle cp(THREAD, (constantPoolOop)obj); | |
529 guarantee(!cp->partially_loaded(), "must be fully loaded"); | |
530 | |
531 for (int i = 0; i< cp->length(); i++) { | |
532 if (cp->tag_at(i).is_unresolved_klass()) { | |
533 // This will force loading of the class | |
534 klassOop klass = cp->klass_at(i, CHECK); | |
4060 | 535 if (klass->klass_part()->oop_is_instance()) { |
0 | 536 // Force initialization of class |
537 instanceKlass::cast(klass)->initialize(CHECK); | |
538 } | |
539 } | |
540 } | |
541 } | |
542 | |
543 #endif |