Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolKlass.cpp @ 3461:81d815b05abb
7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
Reviewed-by: never
| author | jrose |
|---|---|
| date | Thu, 23 Jun 2011 17:14:06 -0700 |
| parents | 69c94f488271 |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 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 | |
| 47 #ifndef SERIALGC | |
| 48 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
| 49 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
| 50 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
| 51 #include "memory/cardTableRS.hpp" | |
| 52 #include "oops/oop.pcgc.inline.hpp" | |
| 53 #endif | |
| 0 | 54 |
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55 constantPoolOop constantPoolKlass::allocate(int length, bool is_conc_safe, TRAPS) { |
| 0 | 56 int size = constantPoolOopDesc::object_size(length); |
| 57 KlassHandle klass (THREAD, as_klassOop()); | |
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58 assert(klass()->is_oop(), "Can't be null, else handlizing of c below won't work"); |
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59 constantPoolHandle pool; |
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60 { |
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61 constantPoolOop c = |
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62 (constantPoolOop)CollectedHeap::permanent_obj_allocate(klass, size, CHECK_NULL); |
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63 assert(c->klass_or_null() != NULL, "Handlizing below won't work"); |
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64 pool = constantPoolHandle(THREAD, c); |
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65 } |
| 0 | 66 |
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67 pool->set_length(length); |
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68 pool->set_tags(NULL); |
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69 pool->set_cache(NULL); |
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70 pool->set_operands(NULL); |
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71 pool->set_pool_holder(NULL); |
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72 pool->set_flags(0); |
| 0 | 73 // only set to non-zero if constant pool is merged by RedefineClasses |
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74 pool->set_orig_length(0); |
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75 // if constant pool may change during RedefineClasses, it is created |
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76 // unsafe for GC concurrent processing. |
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77 pool->set_is_conc_safe(is_conc_safe); |
| 0 | 78 // all fields are initialized; needed for GC |
| 79 | |
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80 // Note: because we may be in this "conc_unsafe" state when allocating |
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81 // t_oop below, which may in turn cause a GC, it is imperative that our |
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82 // size be correct, consistent and henceforth stable, at this stage. |
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83 assert(pool->is_oop() && pool->is_parsable(), "Else size() below is unreliable"); |
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84 assert(size == pool->size(), "size() is wrong"); |
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85 |
| 0 | 86 // initialize tag array |
| 87 typeArrayOop t_oop = oopFactory::new_permanent_byteArray(length, CHECK_NULL); | |
| 88 typeArrayHandle tags (THREAD, t_oop); | |
| 89 for (int index = 0; index < length; index++) { | |
| 90 tags()->byte_at_put(index, JVM_CONSTANT_Invalid); | |
| 91 } | |
| 92 pool->set_tags(tags()); | |
| 93 | |
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94 // Check that our size was stable at its old value. |
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95 assert(size == pool->size(), "size() changed"); |
| 0 | 96 return pool(); |
| 97 } | |
| 98 | |
| 99 klassOop constantPoolKlass::create_klass(TRAPS) { | |
| 100 constantPoolKlass o; | |
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101 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
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102 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
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103 // Make sure size calculation is right |
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104 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
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105 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
| 0 | 106 return k(); |
| 107 } | |
| 108 | |
| 109 int constantPoolKlass::oop_size(oop obj) const { | |
| 110 assert(obj->is_constantPool(), "must be constantPool"); | |
| 111 return constantPoolOop(obj)->object_size(); | |
| 112 } | |
| 113 | |
| 114 | |
| 115 void constantPoolKlass::oop_follow_contents(oop obj) { | |
| 116 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 117 constantPoolOop cp = (constantPoolOop) obj; | |
| 118 // Performance tweak: We skip iterating over the klass pointer since we | |
| 119 // know that Universe::constantPoolKlassObj never moves. | |
| 120 | |
| 121 // If the tags array is null we are in the middle of allocating this constant pool | |
| 122 if (cp->tags() != NULL) { | |
| 123 // gc of constant pool contents | |
| 124 oop* base = (oop*)cp->base(); | |
| 125 for (int i = 0; i < cp->length(); i++) { | |
| 126 if (cp->is_pointer_entry(i)) { | |
| 127 if (*base != NULL) MarkSweep::mark_and_push(base); | |
| 128 } | |
| 129 base++; | |
| 130 } | |
| 131 // gc of constant pool instance variables | |
| 132 MarkSweep::mark_and_push(cp->tags_addr()); | |
| 133 MarkSweep::mark_and_push(cp->cache_addr()); | |
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134 MarkSweep::mark_and_push(cp->operands_addr()); |
| 0 | 135 MarkSweep::mark_and_push(cp->pool_holder_addr()); |
| 136 } | |
| 137 } | |
| 138 | |
| 139 #ifndef SERIALGC | |
| 140 void constantPoolKlass::oop_follow_contents(ParCompactionManager* cm, | |
| 141 oop obj) { | |
| 142 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 143 constantPoolOop cp = (constantPoolOop) obj; | |
| 144 // Performance tweak: We skip iterating over the klass pointer since we | |
| 145 // know that Universe::constantPoolKlassObj never moves. | |
| 146 | |
| 147 // If the tags array is null we are in the middle of allocating this constant | |
| 148 // pool. | |
| 149 if (cp->tags() != NULL) { | |
| 150 // gc of constant pool contents | |
| 151 oop* base = (oop*)cp->base(); | |
| 152 for (int i = 0; i < cp->length(); i++) { | |
| 153 if (cp->is_pointer_entry(i)) { | |
| 154 if (*base != NULL) PSParallelCompact::mark_and_push(cm, base); | |
| 155 } | |
| 156 base++; | |
| 157 } | |
| 158 // gc of constant pool instance variables | |
| 159 PSParallelCompact::mark_and_push(cm, cp->tags_addr()); | |
| 160 PSParallelCompact::mark_and_push(cm, cp->cache_addr()); | |
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161 PSParallelCompact::mark_and_push(cm, cp->operands_addr()); |
| 0 | 162 PSParallelCompact::mark_and_push(cm, cp->pool_holder_addr()); |
| 163 } | |
| 164 } | |
| 165 #endif // SERIALGC | |
| 166 | |
| 167 | |
| 168 int constantPoolKlass::oop_adjust_pointers(oop obj) { | |
| 169 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 170 constantPoolOop cp = (constantPoolOop) obj; | |
| 171 // Get size before changing pointers. | |
| 172 // Don't call size() or oop_size() since that is a virtual call. | |
| 173 int size = cp->object_size(); | |
| 174 // Performance tweak: We skip iterating over the klass pointer since we | |
| 175 // know that Universe::constantPoolKlassObj never moves. | |
| 176 | |
| 177 // If the tags array is null we are in the middle of allocating this constant | |
| 178 // pool. | |
| 179 if (cp->tags() != NULL) { | |
| 180 oop* base = (oop*)cp->base(); | |
| 181 for (int i = 0; i< cp->length(); i++) { | |
| 182 if (cp->is_pointer_entry(i)) { | |
| 183 MarkSweep::adjust_pointer(base); | |
| 184 } | |
| 185 base++; | |
| 186 } | |
| 187 } | |
| 188 MarkSweep::adjust_pointer(cp->tags_addr()); | |
| 189 MarkSweep::adjust_pointer(cp->cache_addr()); | |
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190 MarkSweep::adjust_pointer(cp->operands_addr()); |
| 0 | 191 MarkSweep::adjust_pointer(cp->pool_holder_addr()); |
| 192 return size; | |
| 193 } | |
| 194 | |
| 195 | |
| 196 int constantPoolKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
| 197 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 198 // Performance tweak: We skip iterating over the klass pointer since we | |
| 199 // know that Universe::constantPoolKlassObj never moves. | |
| 200 constantPoolOop cp = (constantPoolOop) obj; | |
| 201 // Get size before changing pointers. | |
| 202 // Don't call size() or oop_size() since that is a virtual call. | |
| 203 int size = cp->object_size(); | |
| 204 | |
| 205 // If the tags array is null we are in the middle of allocating this constant | |
| 206 // pool. | |
| 207 if (cp->tags() != NULL) { | |
| 208 oop* base = (oop*)cp->base(); | |
| 209 for (int i = 0; i < cp->length(); i++) { | |
| 210 if (cp->is_pointer_entry(i)) { | |
| 211 blk->do_oop(base); | |
| 212 } | |
| 213 base++; | |
| 214 } | |
| 215 } | |
| 216 blk->do_oop(cp->tags_addr()); | |
| 217 blk->do_oop(cp->cache_addr()); | |
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218 blk->do_oop(cp->operands_addr()); |
| 0 | 219 blk->do_oop(cp->pool_holder_addr()); |
| 220 return size; | |
| 221 } | |
| 222 | |
| 223 | |
| 224 int constantPoolKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
| 225 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 226 // Performance tweak: We skip iterating over the klass pointer since we | |
| 227 // know that Universe::constantPoolKlassObj never moves. | |
| 228 constantPoolOop cp = (constantPoolOop) obj; | |
| 229 // Get size before changing pointers. | |
| 230 // Don't call size() or oop_size() since that is a virtual call. | |
| 231 int size = cp->object_size(); | |
| 232 | |
| 233 // If the tags array is null we are in the middle of allocating this constant | |
| 234 // pool. | |
| 235 if (cp->tags() != NULL) { | |
| 236 oop* base = (oop*)cp->base(); | |
| 237 for (int i = 0; i < cp->length(); i++) { | |
| 238 if (mr.contains(base)) { | |
| 239 if (cp->is_pointer_entry(i)) { | |
| 240 blk->do_oop(base); | |
| 241 } | |
| 242 } | |
| 243 base++; | |
| 244 } | |
| 245 } | |
| 246 oop* addr; | |
| 247 addr = cp->tags_addr(); | |
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248 if (mr.contains(addr)) blk->do_oop(addr); |
| 0 | 249 addr = cp->cache_addr(); |
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250 if (mr.contains(addr)) blk->do_oop(addr); |
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251 addr = cp->operands_addr(); |
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252 if (mr.contains(addr)) blk->do_oop(addr); |
| 0 | 253 addr = cp->pool_holder_addr(); |
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254 if (mr.contains(addr)) blk->do_oop(addr); |
| 0 | 255 return size; |
| 256 } | |
| 257 | |
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258 bool constantPoolKlass::oop_is_conc_safe(oop obj) const { |
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259 assert(obj->is_constantPool(), "must be constantPool"); |
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260 return constantPoolOop(obj)->is_conc_safe(); |
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261 } |
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262 |
| 0 | 263 #ifndef SERIALGC |
| 264 int constantPoolKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
| 265 assert (obj->is_constantPool(), "obj must be constant pool"); | |
| 266 constantPoolOop cp = (constantPoolOop) obj; | |
| 267 | |
| 268 // If the tags array is null we are in the middle of allocating this constant | |
| 269 // pool. | |
| 270 if (cp->tags() != NULL) { | |
| 271 oop* base = (oop*)cp->base(); | |
| 272 for (int i = 0; i < cp->length(); ++i, ++base) { | |
| 273 if (cp->is_pointer_entry(i)) { | |
| 274 PSParallelCompact::adjust_pointer(base); | |
| 275 } | |
| 276 } | |
| 277 } | |
| 278 PSParallelCompact::adjust_pointer(cp->tags_addr()); | |
| 279 PSParallelCompact::adjust_pointer(cp->cache_addr()); | |
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280 PSParallelCompact::adjust_pointer(cp->operands_addr()); |
| 0 | 281 PSParallelCompact::adjust_pointer(cp->pool_holder_addr()); |
| 282 return cp->object_size(); | |
| 283 } | |
| 284 | |
| 285 void constantPoolKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
| 286 assert(obj->is_constantPool(), "should be constant pool"); | |
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287 constantPoolOop cp = (constantPoolOop) obj; |
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288 if (cp->tags() != NULL) { |
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289 for (int i = 1; i < cp->length(); ++i) { |
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290 if (cp->is_pointer_entry(i)) { |
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291 oop* base = cp->obj_at_addr_raw(i); |
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292 if (PSScavenge::should_scavenge(base)) { |
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293 pm->claim_or_forward_depth(base); |
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294 } |
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295 } |
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296 } |
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297 } |
| 0 | 298 } |
| 299 #endif // SERIALGC | |
| 300 | |
| 301 // Printing | |
| 302 | |
| 303 void constantPoolKlass::oop_print_on(oop obj, outputStream* st) { | |
| 304 EXCEPTION_MARK; | |
| 305 oop anObj; | |
| 306 assert(obj->is_constantPool(), "must be constantPool"); | |
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307 Klass::oop_print_on(obj, st); |
| 0 | 308 constantPoolOop cp = constantPoolOop(obj); |
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309 if (cp->flags() != 0) { |
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310 st->print(" - flags: 0x%x", cp->flags()); |
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311 if (cp->has_pseudo_string()) st->print(" has_pseudo_string"); |
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312 if (cp->has_invokedynamic()) st->print(" has_invokedynamic"); |
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313 if (cp->has_preresolution()) st->print(" has_preresolution"); |
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314 st->cr(); |
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315 } |
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316 if (cp->pool_holder() != NULL) { |
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317 bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp); |
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318 st->print_cr(" - holder: " INTPTR_FORMAT "%s", cp->pool_holder(), (extra? " (extra)" : "")); |
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319 } |
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320 st->print_cr(" - cache: " INTPTR_FORMAT, cp->cache()); |
| 0 | 321 for (int index = 1; index < cp->length(); index++) { // Index 0 is unused |
| 322 st->print(" - %3d : ", index); | |
| 323 cp->tag_at(index).print_on(st); | |
| 324 st->print(" : "); | |
| 325 switch (cp->tag_at(index).value()) { | |
| 326 case JVM_CONSTANT_Class : | |
| 327 { anObj = cp->klass_at(index, CATCH); | |
| 328 anObj->print_value_on(st); | |
| 329 st->print(" {0x%lx}", (address)anObj); | |
| 330 } | |
| 331 break; | |
| 332 case JVM_CONSTANT_Fieldref : | |
| 333 case JVM_CONSTANT_Methodref : | |
| 334 case JVM_CONSTANT_InterfaceMethodref : | |
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335 st->print("klass_index=%d", cp->uncached_klass_ref_index_at(index)); |
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336 st->print(" name_and_type_index=%d", cp->uncached_name_and_type_ref_index_at(index)); |
| 0 | 337 break; |
| 338 case JVM_CONSTANT_UnresolvedString : | |
| 339 case JVM_CONSTANT_String : | |
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340 if (cp->is_pseudo_string_at(index)) { |
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341 anObj = cp->pseudo_string_at(index); |
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342 } else { |
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343 anObj = cp->string_at(index, CATCH); |
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344 } |
| 0 | 345 anObj->print_value_on(st); |
| 346 st->print(" {0x%lx}", (address)anObj); | |
| 347 break; | |
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348 case JVM_CONSTANT_Object : |
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349 anObj = cp->object_at(index); |
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350 anObj->print_value_on(st); |
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351 st->print(" {0x%lx}", (address)anObj); |
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352 break; |
| 0 | 353 case JVM_CONSTANT_Integer : |
| 354 st->print("%d", cp->int_at(index)); | |
| 355 break; | |
| 356 case JVM_CONSTANT_Float : | |
| 357 st->print("%f", cp->float_at(index)); | |
| 358 break; | |
| 359 case JVM_CONSTANT_Long : | |
| 360 st->print_jlong(cp->long_at(index)); | |
| 361 index++; // Skip entry following eigth-byte constant | |
| 362 break; | |
| 363 case JVM_CONSTANT_Double : | |
| 364 st->print("%lf", cp->double_at(index)); | |
| 365 index++; // Skip entry following eigth-byte constant | |
| 366 break; | |
| 367 case JVM_CONSTANT_NameAndType : | |
| 368 st->print("name_index=%d", cp->name_ref_index_at(index)); | |
| 369 st->print(" signature_index=%d", cp->signature_ref_index_at(index)); | |
| 370 break; | |
| 371 case JVM_CONSTANT_Utf8 : | |
| 372 cp->symbol_at(index)->print_value_on(st); | |
| 373 break; | |
| 374 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
| 375 case JVM_CONSTANT_UnresolvedClassInError: { | |
| 376 // unresolved_klass_at requires lock or safe world. | |
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377 CPSlot entry = cp->slot_at(index); |
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378 if (entry.is_oop()) { |
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379 entry.get_oop()->print_value_on(st); |
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380 } else { |
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381 entry.get_symbol()->print_value_on(st); |
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382 } |
| 0 | 383 } |
| 384 break; | |
| 1602 | 385 case JVM_CONSTANT_MethodHandle : |
| 386 st->print("ref_kind=%d", cp->method_handle_ref_kind_at(index)); | |
| 387 st->print(" ref_index=%d", cp->method_handle_index_at(index)); | |
| 388 break; | |
| 389 case JVM_CONSTANT_MethodType : | |
| 390 st->print("signature_index=%d", cp->method_type_index_at(index)); | |
| 391 break; | |
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392 case JVM_CONSTANT_InvokeDynamic : |
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393 { |
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394 st->print("bootstrap_method_index=%d", cp->invoke_dynamic_bootstrap_method_ref_index_at(index)); |
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395 st->print(" name_and_type_index=%d", cp->invoke_dynamic_name_and_type_ref_index_at(index)); |
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396 int argc = cp->invoke_dynamic_argument_count_at(index); |
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397 if (argc > 0) { |
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398 for (int arg_i = 0; arg_i < argc; arg_i++) { |
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399 int arg = cp->invoke_dynamic_argument_index_at(index, arg_i); |
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400 st->print((arg_i == 0 ? " arguments={%d" : ", %d"), arg); |
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401 } |
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402 st->print("}"); |
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403 } |
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404 } |
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405 break; |
| 0 | 406 default: |
| 407 ShouldNotReachHere(); | |
| 408 break; | |
| 409 } | |
| 410 st->cr(); | |
| 411 } | |
| 412 st->cr(); | |
| 413 } | |
| 414 | |
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415 void constantPoolKlass::oop_print_value_on(oop obj, outputStream* st) { |
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416 assert(obj->is_constantPool(), "must be constantPool"); |
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417 constantPoolOop cp = constantPoolOop(obj); |
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418 st->print("constant pool [%d]", cp->length()); |
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419 if (cp->has_pseudo_string()) st->print("/pseudo_string"); |
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420 if (cp->has_invokedynamic()) st->print("/invokedynamic"); |
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421 if (cp->has_preresolution()) st->print("/preresolution"); |
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422 if (cp->operands() != NULL) st->print("/operands[%d]", cp->operands()->length()); |
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423 cp->print_address_on(st); |
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424 st->print(" for "); |
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425 cp->pool_holder()->print_value_on(st); |
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426 if (cp->pool_holder() != NULL) { |
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427 bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp); |
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428 if (extra) st->print(" (extra)"); |
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429 } |
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430 if (cp->cache() != NULL) { |
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431 st->print(" cache=" PTR_FORMAT, cp->cache()); |
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432 } |
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433 } |
| 0 | 434 |
| 435 const char* constantPoolKlass::internal_name() const { | |
| 436 return "{constant pool}"; | |
| 437 } | |
| 438 | |
| 439 // Verification | |
| 440 | |
| 441 void constantPoolKlass::oop_verify_on(oop obj, outputStream* st) { | |
| 442 Klass::oop_verify_on(obj, st); | |
| 443 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
| 444 constantPoolOop cp = constantPoolOop(obj); | |
| 445 guarantee(cp->is_perm(), "should be in permspace"); | |
| 446 if (!cp->partially_loaded()) { | |
| 447 for (int i = 0; i< cp->length(); i++) { | |
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448 constantTag tag = cp->tag_at(i); |
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449 CPSlot entry = cp->slot_at(i); |
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450 if (tag.is_klass()) { |
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451 if (entry.is_oop()) { |
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452 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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453 guarantee(entry.get_oop()->is_klass(), "should be klass"); |
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454 } |
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455 } else if (tag.is_unresolved_klass()) { |
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456 if (entry.is_oop()) { |
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457 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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458 guarantee(entry.get_oop()->is_klass(), "should be klass"); |
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459 } |
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460 } else if (tag.is_symbol()) { |
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461 guarantee(entry.get_symbol()->refcount() != 0, "should have nonzero reference count"); |
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462 } else if (tag.is_unresolved_string()) { |
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463 if (entry.is_oop()) { |
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464 guarantee(entry.get_oop()->is_perm(), "should be in permspace"); |
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465 guarantee(entry.get_oop()->is_instance(), "should be instance"); |
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466 } |
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467 else { |
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468 guarantee(entry.get_symbol()->refcount() != 0, "should have nonzero reference count"); |
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469 } |
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470 } else if (tag.is_string()) { |
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471 if (!cp->has_pseudo_string()) { |
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472 if (entry.is_oop()) { |
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473 guarantee(!JavaObjectsInPerm || entry.get_oop()->is_perm(), |
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474 "should be in permspace"); |
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475 guarantee(entry.get_oop()->is_instance(), "should be instance"); |
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476 } |
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477 } else { |
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478 // can be non-perm, can be non-instance (array) |
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479 } |
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480 } else if (tag.is_object()) { |
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481 assert(entry.get_oop()->is_oop(), "should be some valid oop"); |
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482 } else { |
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483 assert(!cp->is_pointer_entry(i), "unhandled oop type in constantPoolKlass::verify_on"); |
| 0 | 484 } |
| 485 } | |
| 486 guarantee(cp->tags()->is_perm(), "should be in permspace"); | |
| 487 guarantee(cp->tags()->is_typeArray(), "should be type array"); | |
| 488 if (cp->cache() != NULL) { | |
| 489 // Note: cache() can be NULL before a class is completely setup or | |
| 490 // in temporary constant pools used during constant pool merging | |
| 491 guarantee(cp->cache()->is_perm(), "should be in permspace"); | |
| 492 guarantee(cp->cache()->is_constantPoolCache(), "should be constant pool cache"); | |
| 493 } | |
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494 if (cp->operands() != NULL) { |
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495 guarantee(cp->operands()->is_perm(), "should be in permspace"); |
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496 guarantee(cp->operands()->is_typeArray(), "should be type array"); |
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497 } |
| 0 | 498 if (cp->pool_holder() != NULL) { |
| 499 // Note: pool_holder() can be NULL in temporary constant pools | |
| 500 // used during constant pool merging | |
| 501 guarantee(cp->pool_holder()->is_perm(), "should be in permspace"); | |
| 502 guarantee(cp->pool_holder()->is_klass(), "should be klass"); | |
| 503 } | |
| 504 } | |
| 505 } | |
| 506 | |
| 507 bool constantPoolKlass::oop_partially_loaded(oop obj) const { | |
| 508 assert(obj->is_constantPool(), "object must be constant pool"); | |
| 509 constantPoolOop cp = constantPoolOop(obj); | |
| 510 return cp->tags() == NULL || cp->pool_holder() == (klassOop) cp; // Check whether pool holder points to self | |
| 511 } | |
| 512 | |
| 513 | |
| 514 void constantPoolKlass::oop_set_partially_loaded(oop obj) { | |
| 515 assert(obj->is_constantPool(), "object must be constant pool"); | |
| 516 constantPoolOop cp = constantPoolOop(obj); | |
| 517 assert(cp->pool_holder() == NULL, "just checking"); | |
| 518 cp->set_pool_holder((klassOop) cp); // Temporarily set pool holder to point to self | |
| 519 } | |
| 520 | |
| 521 #ifndef PRODUCT | |
| 522 // CompileTheWorld support. Preload all classes loaded references in the passed in constantpool | |
| 523 void constantPoolKlass::preload_and_initialize_all_classes(oop obj, TRAPS) { | |
| 524 guarantee(obj->is_constantPool(), "object must be constant pool"); | |
| 525 constantPoolHandle cp(THREAD, (constantPoolOop)obj); | |
| 526 guarantee(!cp->partially_loaded(), "must be fully loaded"); | |
| 527 | |
| 528 for (int i = 0; i< cp->length(); i++) { | |
| 529 if (cp->tag_at(i).is_unresolved_klass()) { | |
| 530 // This will force loading of the class | |
| 531 klassOop klass = cp->klass_at(i, CHECK); | |
| 532 if (klass->is_instance()) { | |
| 533 // Force initialization of class | |
| 534 instanceKlass::cast(klass)->initialize(CHECK); | |
| 535 } | |
| 536 } | |
| 537 } | |
| 538 } | |
| 539 | |
| 540 #endif |