Mercurial > hg > graal-compiler
annotate src/share/vm/oops/constantPoolKlass.cpp @ 1515:ef1a1d051971
Merge
author | jrose |
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date | Wed, 12 May 2010 22:06:02 -0700 |
parents | 4e6abf09f540 |
children | c18cbe5936b8 beb77f0d41b3 |
rev | line source |
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0 | 1 /* |
579 | 2 * Copyright 1997-2009 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 | |
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28 constantPoolOop constantPoolKlass::allocate(int length, bool is_conc_safe, TRAPS) { |
0 | 29 int size = constantPoolOopDesc::object_size(length); |
30 KlassHandle klass (THREAD, as_klassOop()); | |
31 constantPoolOop c = | |
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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); | |
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41 // if constant pool may change during RedefineClasses, it is created |
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42 // unsafe for GC concurrent processing. |
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43 c->set_is_conc_safe(is_conc_safe); |
0 | 44 // all fields are initialized; needed for GC |
45 | |
46 // initialize tag array | |
47 // Note: cannot introduce constant pool handle before since it is not | |
48 // completely initialized (no class) -> would cause assertion failure | |
49 constantPoolHandle pool (THREAD, c); | |
50 typeArrayOop t_oop = oopFactory::new_permanent_byteArray(length, CHECK_NULL); | |
51 typeArrayHandle tags (THREAD, t_oop); | |
52 for (int index = 0; index < length; index++) { | |
53 tags()->byte_at_put(index, JVM_CONSTANT_Invalid); | |
54 } | |
55 pool->set_tags(tags()); | |
56 | |
57 return pool(); | |
58 } | |
59 | |
60 klassOop constantPoolKlass::create_klass(TRAPS) { | |
61 constantPoolKlass o; | |
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62 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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63 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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64 // Make sure size calculation is right |
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65 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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66 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
0 | 67 return k(); |
68 } | |
69 | |
70 int constantPoolKlass::oop_size(oop obj) const { | |
71 assert(obj->is_constantPool(), "must be constantPool"); | |
72 return constantPoolOop(obj)->object_size(); | |
73 } | |
74 | |
75 | |
76 void constantPoolKlass::oop_follow_contents(oop obj) { | |
77 assert (obj->is_constantPool(), "obj must be constant pool"); | |
78 constantPoolOop cp = (constantPoolOop) obj; | |
79 // Performance tweak: We skip iterating over the klass pointer since we | |
80 // know that Universe::constantPoolKlassObj never moves. | |
81 | |
82 // If the tags array is null we are in the middle of allocating this constant pool | |
83 if (cp->tags() != NULL) { | |
84 // gc of constant pool contents | |
85 oop* base = (oop*)cp->base(); | |
86 for (int i = 0; i < cp->length(); i++) { | |
87 if (cp->is_pointer_entry(i)) { | |
88 if (*base != NULL) MarkSweep::mark_and_push(base); | |
89 } | |
90 base++; | |
91 } | |
92 // gc of constant pool instance variables | |
93 MarkSweep::mark_and_push(cp->tags_addr()); | |
94 MarkSweep::mark_and_push(cp->cache_addr()); | |
95 MarkSweep::mark_and_push(cp->pool_holder_addr()); | |
96 } | |
97 } | |
98 | |
99 #ifndef SERIALGC | |
100 void constantPoolKlass::oop_follow_contents(ParCompactionManager* cm, | |
101 oop obj) { | |
102 assert (obj->is_constantPool(), "obj must be constant pool"); | |
103 constantPoolOop cp = (constantPoolOop) obj; | |
104 // Performance tweak: We skip iterating over the klass pointer since we | |
105 // know that Universe::constantPoolKlassObj never moves. | |
106 | |
107 // If the tags array is null we are in the middle of allocating this constant | |
108 // pool. | |
109 if (cp->tags() != NULL) { | |
110 // gc of constant pool contents | |
111 oop* base = (oop*)cp->base(); | |
112 for (int i = 0; i < cp->length(); i++) { | |
113 if (cp->is_pointer_entry(i)) { | |
114 if (*base != NULL) PSParallelCompact::mark_and_push(cm, base); | |
115 } | |
116 base++; | |
117 } | |
118 // gc of constant pool instance variables | |
119 PSParallelCompact::mark_and_push(cm, cp->tags_addr()); | |
120 PSParallelCompact::mark_and_push(cm, cp->cache_addr()); | |
121 PSParallelCompact::mark_and_push(cm, cp->pool_holder_addr()); | |
122 } | |
123 } | |
124 #endif // SERIALGC | |
125 | |
126 | |
127 int constantPoolKlass::oop_adjust_pointers(oop obj) { | |
128 assert (obj->is_constantPool(), "obj must be constant pool"); | |
129 constantPoolOop cp = (constantPoolOop) obj; | |
130 // Get size before changing pointers. | |
131 // Don't call size() or oop_size() since that is a virtual call. | |
132 int size = cp->object_size(); | |
133 // Performance tweak: We skip iterating over the klass pointer since we | |
134 // know that Universe::constantPoolKlassObj never moves. | |
135 | |
136 // If the tags array is null we are in the middle of allocating this constant | |
137 // pool. | |
138 if (cp->tags() != NULL) { | |
139 oop* base = (oop*)cp->base(); | |
140 for (int i = 0; i< cp->length(); i++) { | |
141 if (cp->is_pointer_entry(i)) { | |
142 MarkSweep::adjust_pointer(base); | |
143 } | |
144 base++; | |
145 } | |
146 } | |
147 MarkSweep::adjust_pointer(cp->tags_addr()); | |
148 MarkSweep::adjust_pointer(cp->cache_addr()); | |
149 MarkSweep::adjust_pointer(cp->pool_holder_addr()); | |
150 return size; | |
151 } | |
152 | |
153 | |
154 int constantPoolKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
155 assert (obj->is_constantPool(), "obj must be constant pool"); | |
156 // Performance tweak: We skip iterating over the klass pointer since we | |
157 // know that Universe::constantPoolKlassObj never moves. | |
158 constantPoolOop cp = (constantPoolOop) obj; | |
159 // Get size before changing pointers. | |
160 // Don't call size() or oop_size() since that is a virtual call. | |
161 int size = cp->object_size(); | |
162 | |
163 // If the tags array is null we are in the middle of allocating this constant | |
164 // pool. | |
165 if (cp->tags() != NULL) { | |
166 oop* base = (oop*)cp->base(); | |
167 for (int i = 0; i < cp->length(); i++) { | |
168 if (cp->is_pointer_entry(i)) { | |
169 blk->do_oop(base); | |
170 } | |
171 base++; | |
172 } | |
173 } | |
174 blk->do_oop(cp->tags_addr()); | |
175 blk->do_oop(cp->cache_addr()); | |
176 blk->do_oop(cp->pool_holder_addr()); | |
177 return size; | |
178 } | |
179 | |
180 | |
181 int constantPoolKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
182 assert (obj->is_constantPool(), "obj must be constant pool"); | |
183 // Performance tweak: We skip iterating over the klass pointer since we | |
184 // know that Universe::constantPoolKlassObj never moves. | |
185 constantPoolOop cp = (constantPoolOop) obj; | |
186 // Get size before changing pointers. | |
187 // Don't call size() or oop_size() since that is a virtual call. | |
188 int size = cp->object_size(); | |
189 | |
190 // If the tags array is null we are in the middle of allocating this constant | |
191 // pool. | |
192 if (cp->tags() != NULL) { | |
193 oop* base = (oop*)cp->base(); | |
194 for (int i = 0; i < cp->length(); i++) { | |
195 if (mr.contains(base)) { | |
196 if (cp->is_pointer_entry(i)) { | |
197 blk->do_oop(base); | |
198 } | |
199 } | |
200 base++; | |
201 } | |
202 } | |
203 oop* addr; | |
204 addr = cp->tags_addr(); | |
205 blk->do_oop(addr); | |
206 addr = cp->cache_addr(); | |
207 blk->do_oop(addr); | |
208 addr = cp->pool_holder_addr(); | |
209 blk->do_oop(addr); | |
210 return size; | |
211 } | |
212 | |
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213 bool constantPoolKlass::oop_is_conc_safe(oop obj) const { |
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214 assert(obj->is_constantPool(), "must be constantPool"); |
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215 return constantPoolOop(obj)->is_conc_safe(); |
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216 } |
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217 |
0 | 218 #ifndef SERIALGC |
219 int constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
220 assert (obj->is_constantPool(), "obj must be constant pool"); | |
221 constantPoolOop cp = (constantPoolOop) obj; | |
222 | |
223 // If the tags array is null we are in the middle of allocating this constant | |
224 // pool. | |
225 if (cp->tags() != NULL) { | |
226 oop* base = (oop*)cp->base(); | |
227 for (int i = 0; i < cp->length(); ++i, ++base) { | |
228 if (cp->is_pointer_entry(i)) { | |
229 PSParallelCompact::adjust_pointer(base); | |
230 } | |
231 } | |
232 } | |
233 PSParallelCompact::adjust_pointer(cp->tags_addr()); | |
234 PSParallelCompact::adjust_pointer(cp->cache_addr()); | |
235 PSParallelCompact::adjust_pointer(cp->pool_holder_addr()); | |
236 return cp->object_size(); | |
237 } | |
238 | |
239 int | |
240 constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, | |
241 HeapWord* beg_addr, HeapWord* end_addr) { | |
242 assert (obj->is_constantPool(), "obj must be constant pool"); | |
243 constantPoolOop cp = (constantPoolOop) obj; | |
244 | |
245 // If the tags array is null we are in the middle of allocating this constant | |
246 // pool. | |
247 if (cp->tags() != NULL) { | |
248 oop* base = (oop*)cp->base(); | |
249 oop* const beg_oop = MAX2((oop*)beg_addr, base); | |
250 oop* const end_oop = MIN2((oop*)end_addr, base + cp->length()); | |
251 const size_t beg_idx = pointer_delta(beg_oop, base, sizeof(oop*)); | |
252 const size_t end_idx = pointer_delta(end_oop, base, sizeof(oop*)); | |
253 for (size_t cur_idx = beg_idx; cur_idx < end_idx; ++cur_idx, ++base) { | |
254 if (cp->is_pointer_entry(int(cur_idx))) { | |
255 PSParallelCompact::adjust_pointer(base); | |
256 } | |
257 } | |
258 } | |
259 | |
260 oop* p; | |
261 p = cp->tags_addr(); | |
262 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
263 p = cp->cache_addr(); | |
264 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
265 p = cp->pool_holder_addr(); | |
266 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); | |
267 | |
268 return cp->object_size(); | |
269 } | |
270 | |
271 void constantPoolKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { | |
272 assert(obj->is_constantPool(), "should be constant pool"); | |
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273 constantPoolOop cp = (constantPoolOop) obj; |
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274 if (AnonymousClasses && cp->has_pseudo_string() && cp->tags() != NULL) { |
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275 oop* base = (oop*)cp->base(); |
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276 for (int i = 0; i < cp->length(); ++i, ++base) { |
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277 if (cp->tag_at(i).is_string()) { |
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278 if (PSScavenge::should_scavenge(base)) { |
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279 pm->claim_or_forward_breadth(base); |
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280 } |
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281 } |
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282 } |
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283 } |
0 | 284 } |
285 | |
286 void constantPoolKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
287 assert(obj->is_constantPool(), "should be constant pool"); | |
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288 constantPoolOop cp = (constantPoolOop) obj; |
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289 if (AnonymousClasses && cp->has_pseudo_string() && cp->tags() != NULL) { |
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290 oop* base = (oop*)cp->base(); |
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291 for (int i = 0; i < cp->length(); ++i, ++base) { |
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292 if (cp->tag_at(i).is_string()) { |
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293 if (PSScavenge::should_scavenge(base)) { |
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294 pm->claim_or_forward_depth(base); |
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295 } |
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296 } |
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297 } |
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298 } |
0 | 299 } |
300 #endif // SERIALGC | |
301 | |
302 #ifndef PRODUCT | |
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()); |
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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 st->cr(); |
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317 } |
0 | 318 |
319 // Temp. remove cache so we can do lookups with original indicies. | |
320 constantPoolCacheHandle cache (THREAD, cp->cache()); | |
321 cp->set_cache(NULL); | |
322 | |
323 for (int index = 1; index < cp->length(); index++) { // Index 0 is unused | |
324 st->print(" - %3d : ", index); | |
325 cp->tag_at(index).print_on(st); | |
326 st->print(" : "); | |
327 switch (cp->tag_at(index).value()) { | |
328 case JVM_CONSTANT_Class : | |
329 { anObj = cp->klass_at(index, CATCH); | |
330 anObj->print_value_on(st); | |
331 st->print(" {0x%lx}", (address)anObj); | |
332 } | |
333 break; | |
334 case JVM_CONSTANT_Fieldref : | |
335 case JVM_CONSTANT_Methodref : | |
336 case JVM_CONSTANT_InterfaceMethodref : | |
337 st->print("klass_index=%d", cp->klass_ref_index_at(index)); | |
338 st->print(" name_and_type_index=%d", cp->name_and_type_ref_index_at(index)); | |
339 break; | |
340 case JVM_CONSTANT_UnresolvedString : | |
341 case JVM_CONSTANT_String : | |
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342 if (cp->is_pseudo_string_at(index)) { |
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343 anObj = cp->pseudo_string_at(index); |
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344 } else { |
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345 anObj = cp->string_at(index, CATCH); |
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346 } |
0 | 347 anObj->print_value_on(st); |
348 st->print(" {0x%lx}", (address)anObj); | |
349 break; | |
350 case JVM_CONSTANT_Integer : | |
351 st->print("%d", cp->int_at(index)); | |
352 break; | |
353 case JVM_CONSTANT_Float : | |
354 st->print("%f", cp->float_at(index)); | |
355 break; | |
356 case JVM_CONSTANT_Long : | |
357 st->print_jlong(cp->long_at(index)); | |
358 index++; // Skip entry following eigth-byte constant | |
359 break; | |
360 case JVM_CONSTANT_Double : | |
361 st->print("%lf", cp->double_at(index)); | |
362 index++; // Skip entry following eigth-byte constant | |
363 break; | |
364 case JVM_CONSTANT_NameAndType : | |
365 st->print("name_index=%d", cp->name_ref_index_at(index)); | |
366 st->print(" signature_index=%d", cp->signature_ref_index_at(index)); | |
367 break; | |
368 case JVM_CONSTANT_Utf8 : | |
369 cp->symbol_at(index)->print_value_on(st); | |
370 break; | |
371 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
372 case JVM_CONSTANT_UnresolvedClassInError: { | |
373 // unresolved_klass_at requires lock or safe world. | |
374 oop entry = *cp->obj_at_addr(index); | |
375 entry->print_value_on(st); | |
376 } | |
377 break; | |
378 default: | |
379 ShouldNotReachHere(); | |
380 break; | |
381 } | |
382 st->cr(); | |
383 } | |
384 st->cr(); | |
385 | |
386 // Restore cache | |
387 cp->set_cache(cache()); | |
388 } | |
389 | |
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390 #endif |
0 | 391 |
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392 void constantPoolKlass::oop_print_value_on(oop obj, outputStream* st) { |
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393 assert(obj->is_constantPool(), "must be constantPool"); |
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394 constantPoolOop cp = constantPoolOop(obj); |
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395 st->print("constant pool [%d]", cp->length()); |
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396 if (cp->has_pseudo_string()) st->print("/pseudo_string"); |
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397 if (cp->has_invokedynamic()) st->print("/invokedynamic"); |
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398 cp->print_address_on(st); |
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399 st->print(" for "); |
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400 cp->pool_holder()->print_value_on(st); |
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401 } |
0 | 402 |
403 const char* constantPoolKlass::internal_name() const { | |
404 return "{constant pool}"; | |
405 } | |
406 | |
407 // Verification | |
408 | |
409 void constantPoolKlass::oop_verify_on(oop obj, outputStream* st) { | |
410 Klass::oop_verify_on(obj, st); | |
411 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
412 constantPoolOop cp = constantPoolOop(obj); | |
413 guarantee(cp->is_perm(), "should be in permspace"); | |
414 if (!cp->partially_loaded()) { | |
415 oop* base = (oop*)cp->base(); | |
416 for (int i = 0; i< cp->length(); i++) { | |
417 if (cp->tag_at(i).is_klass()) { | |
418 guarantee((*base)->is_perm(), "should be in permspace"); | |
419 guarantee((*base)->is_klass(), "should be klass"); | |
420 } | |
421 if (cp->tag_at(i).is_unresolved_klass()) { | |
422 guarantee((*base)->is_perm(), "should be in permspace"); | |
423 guarantee((*base)->is_symbol() || (*base)->is_klass(), | |
424 "should be symbol or klass"); | |
425 } | |
426 if (cp->tag_at(i).is_symbol()) { | |
427 guarantee((*base)->is_perm(), "should be in permspace"); | |
428 guarantee((*base)->is_symbol(), "should be symbol"); | |
429 } | |
430 if (cp->tag_at(i).is_unresolved_string()) { | |
431 guarantee((*base)->is_perm(), "should be in permspace"); | |
432 guarantee((*base)->is_symbol() || (*base)->is_instance(), | |
433 "should be symbol or instance"); | |
434 } | |
435 if (cp->tag_at(i).is_string()) { | |
431
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436 if (!cp->has_pseudo_string()) { |
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437 guarantee((*base)->is_perm(), "should be in permspace"); |
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438 guarantee((*base)->is_instance(), "should be instance"); |
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439 } else { |
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440 // can be non-perm, can be non-instance (array) |
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441 } |
0 | 442 } |
443 base++; | |
444 } | |
445 guarantee(cp->tags()->is_perm(), "should be in permspace"); | |
446 guarantee(cp->tags()->is_typeArray(), "should be type array"); | |
447 if (cp->cache() != NULL) { | |
448 // Note: cache() can be NULL before a class is completely setup or | |
449 // in temporary constant pools used during constant pool merging | |
450 guarantee(cp->cache()->is_perm(), "should be in permspace"); | |
451 guarantee(cp->cache()->is_constantPoolCache(), "should be constant pool cache"); | |
452 } | |
453 if (cp->pool_holder() != NULL) { | |
454 // Note: pool_holder() can be NULL in temporary constant pools | |
455 // used during constant pool merging | |
456 guarantee(cp->pool_holder()->is_perm(), "should be in permspace"); | |
457 guarantee(cp->pool_holder()->is_klass(), "should be klass"); | |
458 } | |
459 } | |
460 } | |
461 | |
462 bool constantPoolKlass::oop_partially_loaded(oop obj) const { | |
463 assert(obj->is_constantPool(), "object must be constant pool"); | |
464 constantPoolOop cp = constantPoolOop(obj); | |
465 return cp->tags() == NULL || cp->pool_holder() == (klassOop) cp; // Check whether pool holder points to self | |
466 } | |
467 | |
468 | |
469 void constantPoolKlass::oop_set_partially_loaded(oop obj) { | |
470 assert(obj->is_constantPool(), "object must be constant pool"); | |
471 constantPoolOop cp = constantPoolOop(obj); | |
472 assert(cp->pool_holder() == NULL, "just checking"); | |
473 cp->set_pool_holder((klassOop) cp); // Temporarily set pool holder to point to self | |
474 } | |
475 | |
476 #ifndef PRODUCT | |
477 // CompileTheWorld support. Preload all classes loaded references in the passed in constantpool | |
478 void constantPoolKlass::preload_and_initialize_all_classes(oop obj, TRAPS) { | |
479 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
480 constantPoolHandle cp(THREAD, (constantPoolOop)obj); | |
481 guarantee(!cp->partially_loaded(), "must be fully loaded"); | |
482 | |
483 for (int i = 0; i< cp->length(); i++) { | |
484 if (cp->tag_at(i).is_unresolved_klass()) { | |
485 // This will force loading of the class | |
486 klassOop klass = cp->klass_at(i, CHECK); | |
487 if (klass->is_instance()) { | |
488 // Force initialization of class | |
489 instanceKlass::cast(klass)->initialize(CHECK); | |
490 } | |
491 } | |
492 } | |
493 } | |
494 | |
495 #endif |