Mercurial > hg > truffle
annotate src/share/vm/oops/objArrayKlassKlass.cpp @ 3932:b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
Reviewed-by: jrose, never
| author | twisti |
|---|---|
| date | Thu, 08 Sep 2011 05:11:31 -0700 |
| parents | c7f3d0b4570f |
| children | fc9d8850ab8b |
| 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 "classfile/systemDictionary.hpp" | |
| 28 #include "gc_implementation/shared/markSweep.inline.hpp" | |
| 29 #include "gc_interface/collectedHeap.inline.hpp" | |
| 30 #include "oops/instanceKlass.hpp" | |
| 31 #include "oops/objArrayKlassKlass.hpp" | |
| 32 #include "oops/oop.inline.hpp" | |
| 33 #include "oops/oop.inline2.hpp" | |
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34 #ifndef SERIALGC |
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35 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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36 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
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37 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
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38 #include "memory/cardTableRS.hpp" |
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39 #include "oops/oop.pcgc.inline.hpp" |
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40 #endif |
| 0 | 41 |
| 42 klassOop objArrayKlassKlass::create_klass(TRAPS) { | |
| 43 objArrayKlassKlass o; | |
| 44 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); | |
| 45 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_0); | |
| 46 assert(k()->size() == align_object_size(header_size()), "wrong size for object"); | |
| 47 java_lang_Class::create_mirror(k, CHECK_0); // Allocate mirror | |
| 48 return k(); | |
| 49 } | |
| 50 | |
| 51 klassOop objArrayKlassKlass::allocate_system_objArray_klass(TRAPS) { | |
| 52 // system_objArrays have no instance klass, so allocate with fake class, then reset to NULL | |
| 53 KlassHandle kk(THREAD, Universe::intArrayKlassObj()); | |
| 54 klassOop k = allocate_objArray_klass(1, kk, CHECK_0); | |
| 55 objArrayKlass* tk = (objArrayKlass*) k->klass_part(); | |
| 56 tk->set_element_klass(NULL); | |
| 57 tk->set_bottom_klass(NULL); | |
| 58 return k; | |
| 59 } | |
| 60 | |
| 61 | |
| 62 klassOop objArrayKlassKlass::allocate_objArray_klass(int n, KlassHandle element_klass, TRAPS) { | |
| 63 objArrayKlassKlassHandle this_oop(THREAD, as_klassOop()); | |
| 64 return allocate_objArray_klass_impl(this_oop, n, element_klass, THREAD); | |
| 65 } | |
| 66 | |
| 67 klassOop objArrayKlassKlass::allocate_objArray_klass_impl(objArrayKlassKlassHandle this_oop, | |
| 68 int n, KlassHandle element_klass, TRAPS) { | |
| 69 | |
| 70 // Eagerly allocate the direct array supertype. | |
| 71 KlassHandle super_klass = KlassHandle(); | |
| 72 if (!Universe::is_bootstrapping()) { | |
| 73 KlassHandle element_super (THREAD, element_klass->super()); | |
| 74 if (element_super.not_null()) { | |
| 75 // The element type has a direct super. E.g., String[] has direct super of Object[]. | |
| 76 super_klass = KlassHandle(THREAD, element_super->array_klass_or_null()); | |
| 77 bool supers_exist = super_klass.not_null(); | |
| 78 // Also, see if the element has secondary supertypes. | |
| 79 // We need an array type for each. | |
| 80 objArrayHandle element_supers = objArrayHandle(THREAD, | |
| 81 element_klass->secondary_supers()); | |
| 82 for( int i = element_supers->length()-1; i >= 0; i-- ) { | |
| 83 klassOop elem_super = (klassOop) element_supers->obj_at(i); | |
| 84 if (Klass::cast(elem_super)->array_klass_or_null() == NULL) { | |
| 85 supers_exist = false; | |
| 86 break; | |
| 87 } | |
| 88 } | |
| 89 if (!supers_exist) { | |
| 90 // Oops. Not allocated yet. Back out, allocate it, and retry. | |
| 91 #ifndef PRODUCT | |
| 92 if (WizardMode) { | |
| 93 tty->print_cr("Must retry array klass creation for depth %d",n); | |
| 94 } | |
| 95 #endif | |
| 96 KlassHandle ek; | |
| 97 { | |
| 98 MutexUnlocker mu(MultiArray_lock); | |
| 99 MutexUnlocker mc(Compile_lock); // for vtables | |
| 100 klassOop sk = element_super->array_klass(CHECK_0); | |
| 101 super_klass = KlassHandle(THREAD, sk); | |
| 102 for( int i = element_supers->length()-1; i >= 0; i-- ) { | |
| 103 KlassHandle elem_super (THREAD, element_supers->obj_at(i)); | |
| 104 elem_super->array_klass(CHECK_0); | |
| 105 } | |
| 106 // Now retry from the beginning | |
| 107 klassOop klass_oop = element_klass->array_klass(n, CHECK_0); | |
| 108 // Create a handle because the enclosing brace, when locking | |
| 109 // can cause a gc. Better to have this function return a Handle. | |
| 110 ek = KlassHandle(THREAD, klass_oop); | |
| 111 } // re-lock | |
| 112 return ek(); | |
| 113 } | |
| 114 } else { | |
| 115 // The element type is already Object. Object[] has direct super of Object. | |
| 1142 | 116 super_klass = KlassHandle(THREAD, SystemDictionary::Object_klass()); |
| 0 | 117 } |
| 118 } | |
| 119 | |
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120 // Create type name for klass. |
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121 Symbol* name = NULL; |
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122 if (!element_klass->oop_is_instance() || |
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123 (name = instanceKlass::cast(element_klass())->array_name()) == NULL) { |
| 0 | 124 |
| 125 ResourceMark rm(THREAD); | |
| 126 char *name_str = element_klass->name()->as_C_string(); | |
| 127 int len = element_klass->name()->utf8_length(); | |
| 128 char *new_str = NEW_RESOURCE_ARRAY(char, len + 4); | |
| 129 int idx = 0; | |
| 130 new_str[idx++] = '['; | |
| 131 if (element_klass->oop_is_instance()) { // it could be an array or simple type | |
| 132 new_str[idx++] = 'L'; | |
| 133 } | |
| 134 memcpy(&new_str[idx], name_str, len * sizeof(char)); | |
| 135 idx += len; | |
| 136 if (element_klass->oop_is_instance()) { | |
| 137 new_str[idx++] = ';'; | |
| 138 } | |
| 139 new_str[idx++] = '\0'; | |
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140 name = SymbolTable::new_symbol(new_str, CHECK_0); |
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141 if (element_klass->oop_is_instance()) { |
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142 instanceKlass* ik = instanceKlass::cast(element_klass()); |
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143 ik->set_array_name(name); |
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144 } |
| 0 | 145 } |
| 146 | |
| 147 objArrayKlass o; | |
| 148 arrayKlassHandle k = arrayKlass::base_create_array_klass(o.vtbl_value(), | |
| 149 objArrayKlass::header_size(), | |
| 150 this_oop, | |
| 151 CHECK_0); | |
| 152 | |
| 153 // Initialize instance variables | |
| 154 objArrayKlass* oak = objArrayKlass::cast(k()); | |
| 155 oak->set_dimension(n); | |
| 156 oak->set_element_klass(element_klass()); | |
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157 oak->set_name(name); |
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158 // decrement refcount because object arrays are not explicitly freed. The |
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159 // instanceKlass array_name() keeps the name counted while the klass is |
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160 // loaded. |
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161 name->decrement_refcount(); |
| 0 | 162 |
| 163 klassOop bk; | |
| 164 if (element_klass->oop_is_objArray()) { | |
| 165 bk = objArrayKlass::cast(element_klass())->bottom_klass(); | |
| 166 } else { | |
| 167 bk = element_klass(); | |
| 168 } | |
| 169 assert(bk != NULL && (Klass::cast(bk)->oop_is_instance() || Klass::cast(bk)->oop_is_typeArray()), "invalid bottom klass"); | |
| 170 oak->set_bottom_klass(bk); | |
| 171 | |
| 172 oak->set_layout_helper(array_layout_helper(T_OBJECT)); | |
| 173 assert(oak->oop_is_javaArray(), "sanity"); | |
| 174 assert(oak->oop_is_objArray(), "sanity"); | |
| 175 | |
| 176 // Call complete_create_array_klass after all instance variables has been initialized. | |
| 177 arrayKlass::complete_create_array_klass(k, super_klass, CHECK_0); | |
| 178 | |
| 179 return k(); | |
| 180 } | |
| 181 | |
| 182 | |
| 183 void objArrayKlassKlass::oop_follow_contents(oop obj) { | |
| 184 assert(obj->is_klass(), "must be klass"); | |
| 185 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 186 | |
| 187 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 188 MarkSweep::mark_and_push(oak->element_klass_addr()); | |
| 189 MarkSweep::mark_and_push(oak->bottom_klass_addr()); | |
| 190 | |
| 191 arrayKlassKlass::oop_follow_contents(obj); | |
| 192 } | |
| 193 | |
| 194 #ifndef SERIALGC | |
| 195 void objArrayKlassKlass::oop_follow_contents(ParCompactionManager* cm, | |
| 196 oop obj) { | |
| 197 assert(obj->is_klass(), "must be klass"); | |
| 198 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 199 | |
| 200 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 201 PSParallelCompact::mark_and_push(cm, oak->element_klass_addr()); | |
| 202 PSParallelCompact::mark_and_push(cm, oak->bottom_klass_addr()); | |
| 203 | |
| 204 arrayKlassKlass::oop_follow_contents(cm, obj); | |
| 205 } | |
| 206 #endif // SERIALGC | |
| 207 | |
| 208 | |
| 209 int objArrayKlassKlass::oop_adjust_pointers(oop obj) { | |
| 210 assert(obj->is_klass(), "must be klass"); | |
| 211 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 212 | |
| 213 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 214 MarkSweep::adjust_pointer(oak->element_klass_addr()); | |
| 215 MarkSweep::adjust_pointer(oak->bottom_klass_addr()); | |
| 216 | |
| 217 return arrayKlassKlass::oop_adjust_pointers(obj); | |
| 218 } | |
| 219 | |
| 220 | |
| 221 | |
| 222 int objArrayKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
| 223 assert(obj->is_klass(), "must be klass"); | |
| 224 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 225 | |
| 226 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 227 blk->do_oop(oak->element_klass_addr()); | |
| 228 blk->do_oop(oak->bottom_klass_addr()); | |
| 229 | |
| 230 return arrayKlassKlass::oop_oop_iterate(obj, blk); | |
| 231 } | |
| 232 | |
| 233 | |
| 234 int | |
| 235 objArrayKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
| 236 assert(obj->is_klass(), "must be klass"); | |
| 237 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 238 | |
| 239 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 240 oop* addr; | |
| 241 addr = oak->element_klass_addr(); | |
| 242 if (mr.contains(addr)) blk->do_oop(addr); | |
| 243 addr = oak->bottom_klass_addr(); | |
| 244 if (mr.contains(addr)) blk->do_oop(addr); | |
| 245 | |
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246 return arrayKlassKlass::oop_oop_iterate_m(obj, blk, mr); |
| 0 | 247 } |
| 248 | |
| 249 #ifndef SERIALGC | |
| 250 void objArrayKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
| 251 assert(obj->blueprint()->oop_is_objArrayKlass(),"must be an obj array klass"); | |
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252 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); |
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253 oop* p = oak->element_klass_addr(); |
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254 if (PSScavenge::should_scavenge(p)) { |
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255 pm->claim_or_forward_depth(p); |
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256 } |
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257 p = oak->bottom_klass_addr(); |
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258 if (PSScavenge::should_scavenge(p)) { |
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259 pm->claim_or_forward_depth(p); |
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260 } |
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261 |
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262 arrayKlassKlass::oop_push_contents(pm, obj); |
| 0 | 263 } |
| 264 | |
| 265 int objArrayKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
| 266 assert(obj->is_klass(), "must be klass"); | |
| 267 assert(klassOop(obj)->klass_part()->oop_is_objArray_slow(), "must be obj array"); | |
| 268 | |
| 269 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); | |
| 270 PSParallelCompact::adjust_pointer(oak->element_klass_addr()); | |
| 271 PSParallelCompact::adjust_pointer(oak->bottom_klass_addr()); | |
| 272 | |
| 273 return arrayKlassKlass::oop_update_pointers(cm, obj); | |
| 274 } | |
| 275 #endif // SERIALGC | |
| 276 | |
| 277 #ifndef PRODUCT | |
| 278 | |
| 279 // Printing | |
| 280 | |
| 281 void objArrayKlassKlass::oop_print_on(oop obj, outputStream* st) { | |
| 282 assert(obj->is_klass(), "must be klass"); | |
| 283 objArrayKlass* oak = (objArrayKlass*) klassOop(obj)->klass_part(); | |
| 284 klassKlass::oop_print_on(obj, st); | |
| 285 st->print(" - instance klass: "); | |
| 286 oak->element_klass()->print_value_on(st); | |
| 287 st->cr(); | |
| 288 } | |
| 289 | |
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290 #endif //PRODUCT |
| 0 | 291 |
| 292 void objArrayKlassKlass::oop_print_value_on(oop obj, outputStream* st) { | |
| 293 assert(obj->is_klass(), "must be klass"); | |
| 294 objArrayKlass* oak = (objArrayKlass*) klassOop(obj)->klass_part(); | |
| 295 | |
| 296 oak->element_klass()->print_value_on(st); | |
| 297 st->print("[]"); | |
| 298 } | |
| 299 | |
| 300 const char* objArrayKlassKlass::internal_name() const { | |
| 301 return "{object array class}"; | |
| 302 } | |
| 303 | |
| 304 | |
| 305 // Verification | |
| 306 | |
| 307 void objArrayKlassKlass::oop_verify_on(oop obj, outputStream* st) { | |
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308 arrayKlassKlass::oop_verify_on(obj, st); |
| 0 | 309 objArrayKlass* oak = objArrayKlass::cast((klassOop)obj); |
| 310 guarantee(oak->element_klass()->is_perm(), "should be in permspace"); | |
| 311 guarantee(oak->element_klass()->is_klass(), "should be klass"); | |
| 312 guarantee(oak->bottom_klass()->is_perm(), "should be in permspace"); | |
| 313 guarantee(oak->bottom_klass()->is_klass(), "should be klass"); | |
| 314 Klass* bk = Klass::cast(oak->bottom_klass()); | |
| 315 guarantee(bk->oop_is_instance() || bk->oop_is_typeArray(), "invalid bottom klass"); | |
| 316 } |