Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolKlass.cpp @ 467:8724fb00c422
Merge
author | blacklion |
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date | Fri, 05 Dec 2008 15:06:37 -0500 |
parents | a45484ea312d |
children | 0af8b0718fc9 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_constantPoolKlass.cpp.incl" | |
27 | |
28 constantPoolOop constantPoolKlass::allocate(int length, TRAPS) { | |
29 int size = constantPoolOopDesc::object_size(length); | |
30 KlassHandle klass (THREAD, as_klassOop()); | |
31 constantPoolOop c = | |
113
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32 (constantPoolOop)CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL); |
0 | 33 |
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34 c->set_length(length); |
0 | 35 c->set_tags(NULL); |
36 c->set_cache(NULL); | |
37 c->set_pool_holder(NULL); | |
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38 c->set_flags(0); |
0 | 39 // only set to non-zero if constant pool is merged by RedefineClasses |
40 c->set_orig_length(0); | |
41 // all fields are initialized; needed for GC | |
42 | |
43 // initialize tag array | |
44 // Note: cannot introduce constant pool handle before since it is not | |
45 // completely initialized (no class) -> would cause assertion failure | |
46 constantPoolHandle pool (THREAD, c); | |
47 typeArrayOop t_oop = oopFactory::new_permanent_byteArray(length, CHECK_NULL); | |
48 typeArrayHandle tags (THREAD, t_oop); | |
49 for (int index = 0; index < length; index++) { | |
50 tags()->byte_at_put(index, JVM_CONSTANT_Invalid); | |
51 } | |
52 pool->set_tags(tags()); | |
53 | |
54 return pool(); | |
55 } | |
56 | |
57 klassOop constantPoolKlass::create_klass(TRAPS) { | |
58 constantPoolKlass o; | |
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59 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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60 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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61 // Make sure size calculation is right |
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62 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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63 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
0 | 64 return k(); |
65 } | |
66 | |
67 int constantPoolKlass::oop_size(oop obj) const { | |
68 assert(obj->is_constantPool(), "must be constantPool"); | |
69 return constantPoolOop(obj)->object_size(); | |
70 } | |
71 | |
72 | |
73 void constantPoolKlass::oop_follow_contents(oop obj) { | |
74 assert (obj->is_constantPool(), "obj must be constant pool"); | |
75 constantPoolOop cp = (constantPoolOop) obj; | |
76 // Performance tweak: We skip iterating over the klass pointer since we | |
77 // know that Universe::constantPoolKlassObj never moves. | |
78 | |
79 // If the tags array is null we are in the middle of allocating this constant pool | |
80 if (cp->tags() != NULL) { | |
81 // gc of constant pool contents | |
82 oop* base = (oop*)cp->base(); | |
83 for (int i = 0; i < cp->length(); i++) { | |
84 if (cp->is_pointer_entry(i)) { | |
85 if (*base != NULL) MarkSweep::mark_and_push(base); | |
86 } | |
87 base++; | |
88 } | |
89 // gc of constant pool instance variables | |
90 MarkSweep::mark_and_push(cp->tags_addr()); | |
91 MarkSweep::mark_and_push(cp->cache_addr()); | |
92 MarkSweep::mark_and_push(cp->pool_holder_addr()); | |
93 } | |
94 } | |
95 | |
96 #ifndef SERIALGC | |
97 void constantPoolKlass::oop_follow_contents(ParCompactionManager* cm, | |
98 oop obj) { | |
99 assert (obj->is_constantPool(), "obj must be constant pool"); | |
100 constantPoolOop cp = (constantPoolOop) obj; | |
101 // Performance tweak: We skip iterating over the klass pointer since we | |
102 // know that Universe::constantPoolKlassObj never moves. | |
103 | |
104 // If the tags array is null we are in the middle of allocating this constant | |
105 // pool. | |
106 if (cp->tags() != NULL) { | |
107 // gc of constant pool contents | |
108 oop* base = (oop*)cp->base(); | |
109 for (int i = 0; i < cp->length(); i++) { | |
110 if (cp->is_pointer_entry(i)) { | |
111 if (*base != NULL) PSParallelCompact::mark_and_push(cm, base); | |
112 } | |
113 base++; | |
114 } | |
115 // gc of constant pool instance variables | |
116 PSParallelCompact::mark_and_push(cm, cp->tags_addr()); | |
117 PSParallelCompact::mark_and_push(cm, cp->cache_addr()); | |
118 PSParallelCompact::mark_and_push(cm, cp->pool_holder_addr()); | |
119 } | |
120 } | |
121 #endif // SERIALGC | |
122 | |
123 | |
124 int constantPoolKlass::oop_adjust_pointers(oop obj) { | |
125 assert (obj->is_constantPool(), "obj must be constant pool"); | |
126 constantPoolOop cp = (constantPoolOop) obj; | |
127 // Get size before changing pointers. | |
128 // Don't call size() or oop_size() since that is a virtual call. | |
129 int size = cp->object_size(); | |
130 // Performance tweak: We skip iterating over the klass pointer since we | |
131 // know that Universe::constantPoolKlassObj never moves. | |
132 | |
133 // If the tags array is null we are in the middle of allocating this constant | |
134 // pool. | |
135 if (cp->tags() != NULL) { | |
136 oop* base = (oop*)cp->base(); | |
137 for (int i = 0; i< cp->length(); i++) { | |
138 if (cp->is_pointer_entry(i)) { | |
139 MarkSweep::adjust_pointer(base); | |
140 } | |
141 base++; | |
142 } | |
143 } | |
144 MarkSweep::adjust_pointer(cp->tags_addr()); | |
145 MarkSweep::adjust_pointer(cp->cache_addr()); | |
146 MarkSweep::adjust_pointer(cp->pool_holder_addr()); | |
147 return size; | |
148 } | |
149 | |
150 | |
151 int constantPoolKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
152 assert (obj->is_constantPool(), "obj must be constant pool"); | |
153 // Performance tweak: We skip iterating over the klass pointer since we | |
154 // know that Universe::constantPoolKlassObj never moves. | |
155 constantPoolOop cp = (constantPoolOop) obj; | |
156 // Get size before changing pointers. | |
157 // Don't call size() or oop_size() since that is a virtual call. | |
158 int size = cp->object_size(); | |
159 | |
160 // If the tags array is null we are in the middle of allocating this constant | |
161 // pool. | |
162 if (cp->tags() != NULL) { | |
163 oop* base = (oop*)cp->base(); | |
164 for (int i = 0; i < cp->length(); i++) { | |
165 if (cp->is_pointer_entry(i)) { | |
166 blk->do_oop(base); | |
167 } | |
168 base++; | |
169 } | |
170 } | |
171 blk->do_oop(cp->tags_addr()); | |
172 blk->do_oop(cp->cache_addr()); | |
173 blk->do_oop(cp->pool_holder_addr()); | |
174 return size; | |
175 } | |
176 | |
177 | |
178 int constantPoolKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
179 assert (obj->is_constantPool(), "obj must be constant pool"); | |
180 // Performance tweak: We skip iterating over the klass pointer since we | |
181 // know that Universe::constantPoolKlassObj never moves. | |
182 constantPoolOop cp = (constantPoolOop) obj; | |
183 // Get size before changing pointers. | |
184 // Don't call size() or oop_size() since that is a virtual call. | |
185 int size = cp->object_size(); | |
186 | |
187 // If the tags array is null we are in the middle of allocating this constant | |
188 // pool. | |
189 if (cp->tags() != NULL) { | |
190 oop* base = (oop*)cp->base(); | |
191 for (int i = 0; i < cp->length(); i++) { | |
192 if (mr.contains(base)) { | |
193 if (cp->is_pointer_entry(i)) { | |
194 blk->do_oop(base); | |
195 } | |
196 } | |
197 base++; | |
198 } | |
199 } | |
200 oop* addr; | |
201 addr = cp->tags_addr(); | |
202 blk->do_oop(addr); | |
203 addr = cp->cache_addr(); | |
204 blk->do_oop(addr); | |
205 addr = cp->pool_holder_addr(); | |
206 blk->do_oop(addr); | |
207 return size; | |
208 } | |
209 | |
210 #ifndef SERIALGC | |
211 int constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
212 assert (obj->is_constantPool(), "obj must be constant pool"); | |
213 constantPoolOop cp = (constantPoolOop) obj; | |
214 | |
215 // If the tags array is null we are in the middle of allocating this constant | |
216 // pool. | |
217 if (cp->tags() != NULL) { | |
218 oop* base = (oop*)cp->base(); | |
219 for (int i = 0; i < cp->length(); ++i, ++base) { | |
220 if (cp->is_pointer_entry(i)) { | |
221 PSParallelCompact::adjust_pointer(base); | |
222 } | |
223 } | |
224 } | |
225 PSParallelCompact::adjust_pointer(cp->tags_addr()); | |
226 PSParallelCompact::adjust_pointer(cp->cache_addr()); | |
227 PSParallelCompact::adjust_pointer(cp->pool_holder_addr()); | |
228 return cp->object_size(); | |
229 } | |
230 | |
231 int | |
232 constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, | |
233 HeapWord* beg_addr, HeapWord* end_addr) { | |
234 assert (obj->is_constantPool(), "obj must be constant pool"); | |
235 constantPoolOop cp = (constantPoolOop) obj; | |
236 | |
237 // If the tags array is null we are in the middle of allocating this constant | |
238 // pool. | |
239 if (cp->tags() != NULL) { | |
240 oop* base = (oop*)cp->base(); | |
241 oop* const beg_oop = MAX2((oop*)beg_addr, base); | |
242 oop* const end_oop = MIN2((oop*)end_addr, base + cp->length()); | |
243 const size_t beg_idx = pointer_delta(beg_oop, base, sizeof(oop*)); | |
244 const size_t end_idx = pointer_delta(end_oop, base, sizeof(oop*)); | |
245 for (size_t cur_idx = beg_idx; cur_idx < end_idx; ++cur_idx, ++base) { | |
246 if (cp->is_pointer_entry(int(cur_idx))) { | |
247 PSParallelCompact::adjust_pointer(base); | |
248 } | |
249 } | |
250 } | |
251 | |
252 oop* p; | |
253 p = cp->tags_addr(); | |
254 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
255 p = cp->cache_addr(); | |
256 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
257 p = cp->pool_holder_addr(); | |
258 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
259 | |
260 return cp->object_size(); | |
261 } | |
262 | |
263 void constantPoolKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { | |
264 assert(obj->is_constantPool(), "should be constant pool"); | |
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265 constantPoolOop cp = (constantPoolOop) obj; |
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266 if (AnonymousClasses && cp->has_pseudo_string() && cp->tags() != NULL) { |
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267 oop* base = (oop*)cp->base(); |
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268 for (int i = 0; i < cp->length(); ++i, ++base) { |
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269 if (cp->tag_at(i).is_string()) { |
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270 if (PSScavenge::should_scavenge(base)) { |
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271 pm->claim_or_forward_breadth(base); |
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272 } |
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273 } |
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274 } |
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275 } |
0 | 276 } |
277 | |
278 void constantPoolKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
279 assert(obj->is_constantPool(), "should be constant pool"); | |
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280 constantPoolOop cp = (constantPoolOop) obj; |
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281 if (AnonymousClasses && cp->has_pseudo_string() && cp->tags() != NULL) { |
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282 oop* base = (oop*)cp->base(); |
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283 for (int i = 0; i < cp->length(); ++i, ++base) { |
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284 if (cp->tag_at(i).is_string()) { |
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285 if (PSScavenge::should_scavenge(base)) { |
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286 pm->claim_or_forward_depth(base); |
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287 } |
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288 } |
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289 } |
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290 } |
0 | 291 } |
292 #endif // SERIALGC | |
293 | |
294 #ifndef PRODUCT | |
295 | |
296 // Printing | |
297 | |
298 void constantPoolKlass::oop_print_on(oop obj, outputStream* st) { | |
299 EXCEPTION_MARK; | |
300 oop anObj; | |
301 assert(obj->is_constantPool(), "must be constantPool"); | |
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302 Klass::oop_print_on(obj, st); |
0 | 303 constantPoolOop cp = constantPoolOop(obj); |
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304 if (cp->flags() != 0) { |
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305 st->print(" - flags : 0x%x", cp->flags()); |
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306 if (cp->has_pseudo_string()) st->print(" has_pseudo_string"); |
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307 st->cr(); |
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308 } |
0 | 309 |
310 // Temp. remove cache so we can do lookups with original indicies. | |
311 constantPoolCacheHandle cache (THREAD, cp->cache()); | |
312 cp->set_cache(NULL); | |
313 | |
314 for (int index = 1; index < cp->length(); index++) { // Index 0 is unused | |
315 st->print(" - %3d : ", index); | |
316 cp->tag_at(index).print_on(st); | |
317 st->print(" : "); | |
318 switch (cp->tag_at(index).value()) { | |
319 case JVM_CONSTANT_Class : | |
320 { anObj = cp->klass_at(index, CATCH); | |
321 anObj->print_value_on(st); | |
322 st->print(" {0x%lx}", (address)anObj); | |
323 } | |
324 break; | |
325 case JVM_CONSTANT_Fieldref : | |
326 case JVM_CONSTANT_Methodref : | |
327 case JVM_CONSTANT_InterfaceMethodref : | |
328 st->print("klass_index=%d", cp->klass_ref_index_at(index)); | |
329 st->print(" name_and_type_index=%d", cp->name_and_type_ref_index_at(index)); | |
330 break; | |
331 case JVM_CONSTANT_UnresolvedString : | |
332 case JVM_CONSTANT_String : | |
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333 if (cp->is_pseudo_string_at(index)) { |
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334 anObj = cp->pseudo_string_at(index); |
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335 } else { |
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336 anObj = cp->string_at(index, CATCH); |
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337 } |
0 | 338 anObj->print_value_on(st); |
339 st->print(" {0x%lx}", (address)anObj); | |
340 break; | |
341 case JVM_CONSTANT_Integer : | |
342 st->print("%d", cp->int_at(index)); | |
343 break; | |
344 case JVM_CONSTANT_Float : | |
345 st->print("%f", cp->float_at(index)); | |
346 break; | |
347 case JVM_CONSTANT_Long : | |
348 st->print_jlong(cp->long_at(index)); | |
349 index++; // Skip entry following eigth-byte constant | |
350 break; | |
351 case JVM_CONSTANT_Double : | |
352 st->print("%lf", cp->double_at(index)); | |
353 index++; // Skip entry following eigth-byte constant | |
354 break; | |
355 case JVM_CONSTANT_NameAndType : | |
356 st->print("name_index=%d", cp->name_ref_index_at(index)); | |
357 st->print(" signature_index=%d", cp->signature_ref_index_at(index)); | |
358 break; | |
359 case JVM_CONSTANT_Utf8 : | |
360 cp->symbol_at(index)->print_value_on(st); | |
361 break; | |
362 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
363 case JVM_CONSTANT_UnresolvedClassInError: { | |
364 // unresolved_klass_at requires lock or safe world. | |
365 oop entry = *cp->obj_at_addr(index); | |
366 entry->print_value_on(st); | |
367 } | |
368 break; | |
369 default: | |
370 ShouldNotReachHere(); | |
371 break; | |
372 } | |
373 st->cr(); | |
374 } | |
375 st->cr(); | |
376 | |
377 // Restore cache | |
378 cp->set_cache(cache()); | |
379 } | |
380 | |
381 | |
382 #endif | |
383 | |
384 const char* constantPoolKlass::internal_name() const { | |
385 return "{constant pool}"; | |
386 } | |
387 | |
388 // Verification | |
389 | |
390 void constantPoolKlass::oop_verify_on(oop obj, outputStream* st) { | |
391 Klass::oop_verify_on(obj, st); | |
392 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
393 constantPoolOop cp = constantPoolOop(obj); | |
394 guarantee(cp->is_perm(), "should be in permspace"); | |
395 if (!cp->partially_loaded()) { | |
396 oop* base = (oop*)cp->base(); | |
397 for (int i = 0; i< cp->length(); i++) { | |
398 if (cp->tag_at(i).is_klass()) { | |
399 guarantee((*base)->is_perm(), "should be in permspace"); | |
400 guarantee((*base)->is_klass(), "should be klass"); | |
401 } | |
402 if (cp->tag_at(i).is_unresolved_klass()) { | |
403 guarantee((*base)->is_perm(), "should be in permspace"); | |
404 guarantee((*base)->is_symbol() || (*base)->is_klass(), | |
405 "should be symbol or klass"); | |
406 } | |
407 if (cp->tag_at(i).is_symbol()) { | |
408 guarantee((*base)->is_perm(), "should be in permspace"); | |
409 guarantee((*base)->is_symbol(), "should be symbol"); | |
410 } | |
411 if (cp->tag_at(i).is_unresolved_string()) { | |
412 guarantee((*base)->is_perm(), "should be in permspace"); | |
413 guarantee((*base)->is_symbol() || (*base)->is_instance(), | |
414 "should be symbol or instance"); | |
415 } | |
416 if (cp->tag_at(i).is_string()) { | |
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417 if (!cp->has_pseudo_string()) { |
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418 guarantee((*base)->is_perm(), "should be in permspace"); |
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419 guarantee((*base)->is_instance(), "should be instance"); |
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420 } else { |
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421 // can be non-perm, can be non-instance (array) |
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422 } |
0 | 423 } |
424 base++; | |
425 } | |
426 guarantee(cp->tags()->is_perm(), "should be in permspace"); | |
427 guarantee(cp->tags()->is_typeArray(), "should be type array"); | |
428 if (cp->cache() != NULL) { | |
429 // Note: cache() can be NULL before a class is completely setup or | |
430 // in temporary constant pools used during constant pool merging | |
431 guarantee(cp->cache()->is_perm(), "should be in permspace"); | |
432 guarantee(cp->cache()->is_constantPoolCache(), "should be constant pool cache"); | |
433 } | |
434 if (cp->pool_holder() != NULL) { | |
435 // Note: pool_holder() can be NULL in temporary constant pools | |
436 // used during constant pool merging | |
437 guarantee(cp->pool_holder()->is_perm(), "should be in permspace"); | |
438 guarantee(cp->pool_holder()->is_klass(), "should be klass"); | |
439 } | |
440 } | |
441 } | |
442 | |
443 bool constantPoolKlass::oop_partially_loaded(oop obj) const { | |
444 assert(obj->is_constantPool(), "object must be constant pool"); | |
445 constantPoolOop cp = constantPoolOop(obj); | |
446 return cp->tags() == NULL || cp->pool_holder() == (klassOop) cp; // Check whether pool holder points to self | |
447 } | |
448 | |
449 | |
450 void constantPoolKlass::oop_set_partially_loaded(oop obj) { | |
451 assert(obj->is_constantPool(), "object must be constant pool"); | |
452 constantPoolOop cp = constantPoolOop(obj); | |
453 assert(cp->pool_holder() == NULL, "just checking"); | |
454 cp->set_pool_holder((klassOop) cp); // Temporarily set pool holder to point to self | |
455 } | |
456 | |
457 #ifndef PRODUCT | |
458 // CompileTheWorld support. Preload all classes loaded references in the passed in constantpool | |
459 void constantPoolKlass::preload_and_initialize_all_classes(oop obj, TRAPS) { | |
460 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
461 constantPoolHandle cp(THREAD, (constantPoolOop)obj); | |
462 guarantee(!cp->partially_loaded(), "must be fully loaded"); | |
463 | |
464 for (int i = 0; i< cp->length(); i++) { | |
465 if (cp->tag_at(i).is_unresolved_klass()) { | |
466 // This will force loading of the class | |
467 klassOop klass = cp->klass_at(i, CHECK); | |
468 if (klass->is_instance()) { | |
469 // Force initialization of class | |
470 instanceKlass::cast(klass)->initialize(CHECK); | |
471 } | |
472 } | |
473 } | |
474 } | |
475 | |
476 #endif |