Wed, 06 Jan 2010 22:21:39 -0800
Merge
duke@435 | 1 | /* |
xdono@1014 | 2 | * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_constantPoolOop.cpp.incl" |
duke@435 | 27 | |
jrose@866 | 28 | void constantPoolOopDesc::set_flag_at(FlagBit fb) { |
jrose@866 | 29 | const int MAX_STATE_CHANGES = 2; |
jrose@866 | 30 | for (int i = MAX_STATE_CHANGES + 10; i > 0; i--) { |
jrose@866 | 31 | int oflags = _flags; |
jrose@866 | 32 | int nflags = oflags | (1 << (int)fb); |
jrose@866 | 33 | if (Atomic::cmpxchg(nflags, &_flags, oflags) == oflags) |
jrose@866 | 34 | return; |
jrose@866 | 35 | } |
jrose@866 | 36 | assert(false, "failed to cmpxchg flags"); |
jrose@866 | 37 | _flags |= (1 << (int)fb); // better than nothing |
jrose@866 | 38 | } |
jrose@866 | 39 | |
duke@435 | 40 | klassOop constantPoolOopDesc::klass_at_impl(constantPoolHandle this_oop, int which, TRAPS) { |
duke@435 | 41 | // A resolved constantPool entry will contain a klassOop, otherwise a symbolOop. |
duke@435 | 42 | // It is not safe to rely on the tag bit's here, since we don't have a lock, and the entry and |
duke@435 | 43 | // tag is not updated atomicly. |
duke@435 | 44 | oop entry = *(this_oop->obj_at_addr(which)); |
duke@435 | 45 | if (entry->is_klass()) { |
duke@435 | 46 | // Already resolved - return entry. |
duke@435 | 47 | return (klassOop)entry; |
duke@435 | 48 | } |
duke@435 | 49 | |
duke@435 | 50 | // Acquire lock on constant oop while doing update. After we get the lock, we check if another object |
duke@435 | 51 | // already has updated the object |
duke@435 | 52 | assert(THREAD->is_Java_thread(), "must be a Java thread"); |
duke@435 | 53 | bool do_resolve = false; |
duke@435 | 54 | bool in_error = false; |
duke@435 | 55 | |
duke@435 | 56 | symbolHandle name; |
duke@435 | 57 | Handle loader; |
duke@435 | 58 | { ObjectLocker ol(this_oop, THREAD); |
duke@435 | 59 | |
duke@435 | 60 | if (this_oop->tag_at(which).is_unresolved_klass()) { |
duke@435 | 61 | if (this_oop->tag_at(which).is_unresolved_klass_in_error()) { |
duke@435 | 62 | in_error = true; |
duke@435 | 63 | } else { |
duke@435 | 64 | do_resolve = true; |
duke@435 | 65 | name = symbolHandle(THREAD, this_oop->unresolved_klass_at(which)); |
duke@435 | 66 | loader = Handle(THREAD, instanceKlass::cast(this_oop->pool_holder())->class_loader()); |
duke@435 | 67 | } |
duke@435 | 68 | } |
duke@435 | 69 | } // unlocking constantPool |
duke@435 | 70 | |
duke@435 | 71 | |
duke@435 | 72 | // The original attempt to resolve this constant pool entry failed so find the |
duke@435 | 73 | // original error and throw it again (JVMS 5.4.3). |
duke@435 | 74 | if (in_error) { |
duke@435 | 75 | symbolOop error = SystemDictionary::find_resolution_error(this_oop, which); |
duke@435 | 76 | guarantee(error != (symbolOop)NULL, "tag mismatch with resolution error table"); |
duke@435 | 77 | ResourceMark rm; |
duke@435 | 78 | // exception text will be the class name |
duke@435 | 79 | const char* className = this_oop->unresolved_klass_at(which)->as_C_string(); |
duke@435 | 80 | THROW_MSG_0(error, className); |
duke@435 | 81 | } |
duke@435 | 82 | |
duke@435 | 83 | if (do_resolve) { |
duke@435 | 84 | // this_oop must be unlocked during resolve_or_fail |
duke@435 | 85 | oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); |
duke@435 | 86 | Handle h_prot (THREAD, protection_domain); |
duke@435 | 87 | klassOop k_oop = SystemDictionary::resolve_or_fail(name, loader, h_prot, true, THREAD); |
duke@435 | 88 | KlassHandle k; |
duke@435 | 89 | if (!HAS_PENDING_EXCEPTION) { |
duke@435 | 90 | k = KlassHandle(THREAD, k_oop); |
duke@435 | 91 | // Do access check for klasses |
duke@435 | 92 | verify_constant_pool_resolve(this_oop, k, THREAD); |
duke@435 | 93 | } |
duke@435 | 94 | |
duke@435 | 95 | // Failed to resolve class. We must record the errors so that subsequent attempts |
duke@435 | 96 | // to resolve this constant pool entry fail with the same error (JVMS 5.4.3). |
duke@435 | 97 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 98 | ResourceMark rm; |
duke@435 | 99 | symbolHandle error(PENDING_EXCEPTION->klass()->klass_part()->name()); |
duke@435 | 100 | |
duke@435 | 101 | bool throw_orig_error = false; |
duke@435 | 102 | { |
duke@435 | 103 | ObjectLocker ol (this_oop, THREAD); |
duke@435 | 104 | |
duke@435 | 105 | // some other thread has beaten us and has resolved the class. |
duke@435 | 106 | if (this_oop->tag_at(which).is_klass()) { |
duke@435 | 107 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 108 | entry = this_oop->resolved_klass_at(which); |
duke@435 | 109 | return (klassOop)entry; |
duke@435 | 110 | } |
duke@435 | 111 | |
duke@435 | 112 | if (!PENDING_EXCEPTION-> |
never@1577 | 113 | is_a(SystemDictionary::LinkageError_klass())) { |
duke@435 | 114 | // Just throw the exception and don't prevent these classes from |
duke@435 | 115 | // being loaded due to virtual machine errors like StackOverflow |
duke@435 | 116 | // and OutOfMemoryError, etc, or if the thread was hit by stop() |
duke@435 | 117 | // Needs clarification to section 5.4.3 of the VM spec (see 6308271) |
duke@435 | 118 | } |
duke@435 | 119 | else if (!this_oop->tag_at(which).is_unresolved_klass_in_error()) { |
duke@435 | 120 | SystemDictionary::add_resolution_error(this_oop, which, error); |
duke@435 | 121 | this_oop->tag_at_put(which, JVM_CONSTANT_UnresolvedClassInError); |
duke@435 | 122 | } else { |
duke@435 | 123 | // some other thread has put the class in error state. |
duke@435 | 124 | error = symbolHandle(SystemDictionary::find_resolution_error(this_oop, which)); |
duke@435 | 125 | assert(!error.is_null(), "checking"); |
duke@435 | 126 | throw_orig_error = true; |
duke@435 | 127 | } |
duke@435 | 128 | } // unlocked |
duke@435 | 129 | |
duke@435 | 130 | if (throw_orig_error) { |
duke@435 | 131 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 132 | ResourceMark rm; |
duke@435 | 133 | const char* className = this_oop->unresolved_klass_at(which)->as_C_string(); |
duke@435 | 134 | THROW_MSG_0(error, className); |
duke@435 | 135 | } |
duke@435 | 136 | |
duke@435 | 137 | return 0; |
duke@435 | 138 | } |
duke@435 | 139 | |
duke@435 | 140 | if (TraceClassResolution && !k()->klass_part()->oop_is_array()) { |
duke@435 | 141 | // skip resolving the constant pool so that this code get's |
duke@435 | 142 | // called the next time some bytecodes refer to this class. |
duke@435 | 143 | ResourceMark rm; |
duke@435 | 144 | int line_number = -1; |
duke@435 | 145 | const char * source_file = NULL; |
duke@435 | 146 | if (JavaThread::current()->has_last_Java_frame()) { |
duke@435 | 147 | // try to identify the method which called this function. |
duke@435 | 148 | vframeStream vfst(JavaThread::current()); |
duke@435 | 149 | if (!vfst.at_end()) { |
duke@435 | 150 | line_number = vfst.method()->line_number_from_bci(vfst.bci()); |
duke@435 | 151 | symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); |
duke@435 | 152 | if (s != NULL) { |
duke@435 | 153 | source_file = s->as_C_string(); |
duke@435 | 154 | } |
duke@435 | 155 | } |
duke@435 | 156 | } |
duke@435 | 157 | if (k() != this_oop->pool_holder()) { |
duke@435 | 158 | // only print something if the classes are different |
duke@435 | 159 | if (source_file != NULL) { |
duke@435 | 160 | tty->print("RESOLVE %s %s %s:%d\n", |
duke@435 | 161 | instanceKlass::cast(this_oop->pool_holder())->external_name(), |
duke@435 | 162 | instanceKlass::cast(k())->external_name(), source_file, line_number); |
duke@435 | 163 | } else { |
duke@435 | 164 | tty->print("RESOLVE %s %s\n", |
duke@435 | 165 | instanceKlass::cast(this_oop->pool_holder())->external_name(), |
duke@435 | 166 | instanceKlass::cast(k())->external_name()); |
duke@435 | 167 | } |
duke@435 | 168 | } |
duke@435 | 169 | return k(); |
duke@435 | 170 | } else { |
duke@435 | 171 | ObjectLocker ol (this_oop, THREAD); |
duke@435 | 172 | // Only updated constant pool - if it is resolved. |
duke@435 | 173 | do_resolve = this_oop->tag_at(which).is_unresolved_klass(); |
duke@435 | 174 | if (do_resolve) { |
duke@435 | 175 | this_oop->klass_at_put(which, k()); |
duke@435 | 176 | } |
duke@435 | 177 | } |
duke@435 | 178 | } |
duke@435 | 179 | |
duke@435 | 180 | entry = this_oop->resolved_klass_at(which); |
duke@435 | 181 | assert(entry->is_klass(), "must be resolved at this point"); |
duke@435 | 182 | return (klassOop)entry; |
duke@435 | 183 | } |
duke@435 | 184 | |
duke@435 | 185 | |
duke@435 | 186 | // Does not update constantPoolOop - to avoid any exception throwing. Used |
duke@435 | 187 | // by compiler and exception handling. Also used to avoid classloads for |
duke@435 | 188 | // instanceof operations. Returns NULL if the class has not been loaded or |
duke@435 | 189 | // if the verification of constant pool failed |
duke@435 | 190 | klassOop constantPoolOopDesc::klass_at_if_loaded(constantPoolHandle this_oop, int which) { |
duke@435 | 191 | oop entry = *this_oop->obj_at_addr(which); |
duke@435 | 192 | if (entry->is_klass()) { |
duke@435 | 193 | return (klassOop)entry; |
duke@435 | 194 | } else { |
duke@435 | 195 | assert(entry->is_symbol(), "must be either symbol or klass"); |
duke@435 | 196 | Thread *thread = Thread::current(); |
duke@435 | 197 | symbolHandle name (thread, (symbolOop)entry); |
duke@435 | 198 | oop loader = instanceKlass::cast(this_oop->pool_holder())->class_loader(); |
duke@435 | 199 | oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); |
duke@435 | 200 | Handle h_prot (thread, protection_domain); |
duke@435 | 201 | Handle h_loader (thread, loader); |
duke@435 | 202 | klassOop k = SystemDictionary::find(name, h_loader, h_prot, thread); |
duke@435 | 203 | |
duke@435 | 204 | if (k != NULL) { |
duke@435 | 205 | // Make sure that resolving is legal |
duke@435 | 206 | EXCEPTION_MARK; |
duke@435 | 207 | KlassHandle klass(THREAD, k); |
duke@435 | 208 | // return NULL if verification fails |
duke@435 | 209 | verify_constant_pool_resolve(this_oop, klass, THREAD); |
duke@435 | 210 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 211 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 212 | return NULL; |
duke@435 | 213 | } |
duke@435 | 214 | return klass(); |
duke@435 | 215 | } else { |
duke@435 | 216 | return k; |
duke@435 | 217 | } |
duke@435 | 218 | } |
duke@435 | 219 | } |
duke@435 | 220 | |
duke@435 | 221 | |
duke@435 | 222 | klassOop constantPoolOopDesc::klass_ref_at_if_loaded(constantPoolHandle this_oop, int which) { |
duke@435 | 223 | return klass_at_if_loaded(this_oop, this_oop->klass_ref_index_at(which)); |
duke@435 | 224 | } |
duke@435 | 225 | |
duke@435 | 226 | |
duke@435 | 227 | // This is an interface for the compiler that allows accessing non-resolved entries |
duke@435 | 228 | // in the constant pool - but still performs the validations tests. Must be used |
duke@435 | 229 | // in a pre-parse of the compiler - to determine what it can do and not do. |
duke@435 | 230 | // Note: We cannot update the ConstantPool from the vm_thread. |
duke@435 | 231 | klassOop constantPoolOopDesc::klass_ref_at_if_loaded_check(constantPoolHandle this_oop, int index, TRAPS) { |
duke@435 | 232 | int which = this_oop->klass_ref_index_at(index); |
duke@435 | 233 | oop entry = *this_oop->obj_at_addr(which); |
duke@435 | 234 | if (entry->is_klass()) { |
duke@435 | 235 | return (klassOop)entry; |
duke@435 | 236 | } else { |
duke@435 | 237 | assert(entry->is_symbol(), "must be either symbol or klass"); |
duke@435 | 238 | symbolHandle name (THREAD, (symbolOop)entry); |
duke@435 | 239 | oop loader = instanceKlass::cast(this_oop->pool_holder())->class_loader(); |
duke@435 | 240 | oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); |
duke@435 | 241 | Handle h_loader(THREAD, loader); |
duke@435 | 242 | Handle h_prot (THREAD, protection_domain); |
duke@435 | 243 | KlassHandle k(THREAD, SystemDictionary::find(name, h_loader, h_prot, THREAD)); |
duke@435 | 244 | |
duke@435 | 245 | // Do access check for klasses |
duke@435 | 246 | if( k.not_null() ) verify_constant_pool_resolve(this_oop, k, CHECK_NULL); |
duke@435 | 247 | return k(); |
duke@435 | 248 | } |
duke@435 | 249 | } |
duke@435 | 250 | |
duke@435 | 251 | |
jrose@1161 | 252 | symbolOop constantPoolOopDesc::impl_name_ref_at(int which, bool uncached) { |
jrose@1161 | 253 | int name_index = name_ref_index_at(impl_name_and_type_ref_index_at(which, uncached)); |
duke@435 | 254 | return symbol_at(name_index); |
duke@435 | 255 | } |
duke@435 | 256 | |
duke@435 | 257 | |
jrose@1161 | 258 | symbolOop constantPoolOopDesc::impl_signature_ref_at(int which, bool uncached) { |
jrose@1161 | 259 | int signature_index = signature_ref_index_at(impl_name_and_type_ref_index_at(which, uncached)); |
duke@435 | 260 | return symbol_at(signature_index); |
duke@435 | 261 | } |
duke@435 | 262 | |
duke@435 | 263 | |
jrose@1161 | 264 | int constantPoolOopDesc::impl_name_and_type_ref_index_at(int which, bool uncached) { |
jrose@1494 | 265 | int i = which; |
jrose@1494 | 266 | if (!uncached && cache() != NULL) { |
jrose@1494 | 267 | if (constantPoolCacheOopDesc::is_secondary_index(which)) |
jrose@1494 | 268 | // Invokedynamic indexes are always processed in native order |
jrose@1494 | 269 | // so there is no question of reading a native u2 in Java order here. |
jrose@1494 | 270 | return cache()->main_entry_at(which)->constant_pool_index(); |
jrose@1494 | 271 | // change byte-ordering and go via cache |
jrose@1494 | 272 | i = remap_instruction_operand_from_cache(which); |
jrose@1494 | 273 | } else { |
jrose@1494 | 274 | if (tag_at(which).is_name_and_type()) |
jrose@1494 | 275 | // invokedynamic index is a simple name-and-type |
jrose@1494 | 276 | return which; |
jrose@1494 | 277 | } |
jrose@1494 | 278 | assert(tag_at(i).is_field_or_method(), "Corrupted constant pool"); |
jrose@1494 | 279 | jint ref_index = *int_at_addr(i); |
duke@435 | 280 | return extract_high_short_from_int(ref_index); |
duke@435 | 281 | } |
duke@435 | 282 | |
duke@435 | 283 | |
jrose@1161 | 284 | int constantPoolOopDesc::impl_klass_ref_index_at(int which, bool uncached) { |
jrose@1494 | 285 | guarantee(!constantPoolCacheOopDesc::is_secondary_index(which), |
jrose@1494 | 286 | "an invokedynamic instruction does not have a klass"); |
jrose@1494 | 287 | int i = which; |
jrose@1494 | 288 | if (!uncached && cache() != NULL) { |
jrose@1494 | 289 | // change byte-ordering and go via cache |
jrose@1494 | 290 | i = remap_instruction_operand_from_cache(which); |
jrose@1494 | 291 | } |
jrose@1494 | 292 | assert(tag_at(i).is_field_or_method(), "Corrupted constant pool"); |
jrose@1494 | 293 | jint ref_index = *int_at_addr(i); |
duke@435 | 294 | return extract_low_short_from_int(ref_index); |
duke@435 | 295 | } |
duke@435 | 296 | |
duke@435 | 297 | |
jrose@1161 | 298 | |
jrose@1494 | 299 | int constantPoolOopDesc::remap_instruction_operand_from_cache(int operand) { |
jrose@1494 | 300 | // Operand was fetched by a stream using get_Java_u2, yet was stored |
jrose@1494 | 301 | // by Rewriter::rewrite_member_reference in native order. |
jrose@1494 | 302 | // So now we have to fix the damage by swapping back to native order. |
jrose@1161 | 303 | assert((int)(u2)operand == operand, "clean u2"); |
jrose@1494 | 304 | int cpc_index = Bytes::swap_u2(operand); |
jrose@1494 | 305 | int member_index = cache()->entry_at(cpc_index)->constant_pool_index(); |
jrose@1494 | 306 | return member_index; |
jrose@1161 | 307 | } |
jrose@1161 | 308 | |
jrose@1161 | 309 | |
duke@435 | 310 | void constantPoolOopDesc::verify_constant_pool_resolve(constantPoolHandle this_oop, KlassHandle k, TRAPS) { |
duke@435 | 311 | if (k->oop_is_instance() || k->oop_is_objArray()) { |
duke@435 | 312 | instanceKlassHandle holder (THREAD, this_oop->pool_holder()); |
duke@435 | 313 | klassOop elem_oop = k->oop_is_instance() ? k() : objArrayKlass::cast(k())->bottom_klass(); |
duke@435 | 314 | KlassHandle element (THREAD, elem_oop); |
duke@435 | 315 | |
duke@435 | 316 | // The element type could be a typeArray - we only need the access check if it is |
duke@435 | 317 | // an reference to another class |
duke@435 | 318 | if (element->oop_is_instance()) { |
duke@435 | 319 | LinkResolver::check_klass_accessability(holder, element, CHECK); |
duke@435 | 320 | } |
duke@435 | 321 | } |
duke@435 | 322 | } |
duke@435 | 323 | |
duke@435 | 324 | |
jrose@1161 | 325 | int constantPoolOopDesc::name_ref_index_at(int which_nt) { |
jrose@1161 | 326 | jint ref_index = name_and_type_at(which_nt); |
duke@435 | 327 | return extract_low_short_from_int(ref_index); |
duke@435 | 328 | } |
duke@435 | 329 | |
duke@435 | 330 | |
jrose@1161 | 331 | int constantPoolOopDesc::signature_ref_index_at(int which_nt) { |
jrose@1161 | 332 | jint ref_index = name_and_type_at(which_nt); |
duke@435 | 333 | return extract_high_short_from_int(ref_index); |
duke@435 | 334 | } |
duke@435 | 335 | |
duke@435 | 336 | |
duke@435 | 337 | klassOop constantPoolOopDesc::klass_ref_at(int which, TRAPS) { |
duke@435 | 338 | return klass_at(klass_ref_index_at(which), CHECK_NULL); |
duke@435 | 339 | } |
duke@435 | 340 | |
duke@435 | 341 | |
duke@435 | 342 | symbolOop constantPoolOopDesc::klass_name_at(int which) { |
duke@435 | 343 | assert(tag_at(which).is_unresolved_klass() || tag_at(which).is_klass(), |
duke@435 | 344 | "Corrupted constant pool"); |
duke@435 | 345 | // A resolved constantPool entry will contain a klassOop, otherwise a symbolOop. |
duke@435 | 346 | // It is not safe to rely on the tag bit's here, since we don't have a lock, and the entry and |
duke@435 | 347 | // tag is not updated atomicly. |
duke@435 | 348 | oop entry = *(obj_at_addr(which)); |
duke@435 | 349 | if (entry->is_klass()) { |
duke@435 | 350 | // Already resolved - return entry's name. |
duke@435 | 351 | return klassOop(entry)->klass_part()->name(); |
duke@435 | 352 | } else { |
duke@435 | 353 | assert(entry->is_symbol(), "must be either symbol or klass"); |
duke@435 | 354 | return (symbolOop)entry; |
duke@435 | 355 | } |
duke@435 | 356 | } |
duke@435 | 357 | |
duke@435 | 358 | symbolOop constantPoolOopDesc::klass_ref_at_noresolve(int which) { |
duke@435 | 359 | jint ref_index = klass_ref_index_at(which); |
duke@435 | 360 | return klass_at_noresolve(ref_index); |
duke@435 | 361 | } |
duke@435 | 362 | |
duke@435 | 363 | char* constantPoolOopDesc::string_at_noresolve(int which) { |
duke@435 | 364 | // Test entry type in case string is resolved while in here. |
duke@435 | 365 | oop entry = *(obj_at_addr(which)); |
duke@435 | 366 | if (entry->is_symbol()) { |
duke@435 | 367 | return ((symbolOop)entry)->as_C_string(); |
jrose@866 | 368 | } else if (java_lang_String::is_instance(entry)) { |
jrose@866 | 369 | return java_lang_String::as_utf8_string(entry); |
duke@435 | 370 | } else { |
jrose@866 | 371 | return (char*)"<pseudo-string>"; |
duke@435 | 372 | } |
duke@435 | 373 | } |
duke@435 | 374 | |
duke@435 | 375 | |
duke@435 | 376 | BasicType constantPoolOopDesc::basic_type_for_signature_at(int which) { |
duke@435 | 377 | return FieldType::basic_type(symbol_at(which)); |
duke@435 | 378 | } |
duke@435 | 379 | |
duke@435 | 380 | |
duke@435 | 381 | void constantPoolOopDesc::resolve_string_constants_impl(constantPoolHandle this_oop, TRAPS) { |
duke@435 | 382 | for (int index = 1; index < this_oop->length(); index++) { // Index 0 is unused |
duke@435 | 383 | if (this_oop->tag_at(index).is_unresolved_string()) { |
duke@435 | 384 | this_oop->string_at(index, CHECK); |
duke@435 | 385 | } |
duke@435 | 386 | } |
duke@435 | 387 | } |
duke@435 | 388 | |
duke@435 | 389 | oop constantPoolOopDesc::string_at_impl(constantPoolHandle this_oop, int which, TRAPS) { |
duke@435 | 390 | oop entry = *(this_oop->obj_at_addr(which)); |
duke@435 | 391 | if (entry->is_symbol()) { |
duke@435 | 392 | ObjectLocker ol(this_oop, THREAD); |
duke@435 | 393 | if (this_oop->tag_at(which).is_unresolved_string()) { |
duke@435 | 394 | // Intern string |
duke@435 | 395 | symbolOop sym = this_oop->unresolved_string_at(which); |
duke@435 | 396 | entry = StringTable::intern(sym, CHECK_(constantPoolOop(NULL))); |
duke@435 | 397 | this_oop->string_at_put(which, entry); |
duke@435 | 398 | } else { |
duke@435 | 399 | // Another thread beat us and interned string, read string from constant pool |
duke@435 | 400 | entry = this_oop->resolved_string_at(which); |
duke@435 | 401 | } |
duke@435 | 402 | } |
duke@435 | 403 | assert(java_lang_String::is_instance(entry), "must be string"); |
duke@435 | 404 | return entry; |
duke@435 | 405 | } |
duke@435 | 406 | |
duke@435 | 407 | |
jrose@866 | 408 | bool constantPoolOopDesc::is_pseudo_string_at(int which) { |
jrose@866 | 409 | oop entry = *(obj_at_addr(which)); |
jrose@866 | 410 | if (entry->is_symbol()) |
jrose@866 | 411 | // Not yet resolved, but it will resolve to a string. |
jrose@866 | 412 | return false; |
jrose@866 | 413 | else if (java_lang_String::is_instance(entry)) |
jrose@866 | 414 | return false; // actually, it might be a non-interned or non-perm string |
jrose@866 | 415 | else |
jrose@866 | 416 | // truly pseudo |
jrose@866 | 417 | return true; |
jrose@866 | 418 | } |
jrose@866 | 419 | |
jrose@866 | 420 | |
duke@435 | 421 | bool constantPoolOopDesc::klass_name_at_matches(instanceKlassHandle k, |
duke@435 | 422 | int which) { |
duke@435 | 423 | // Names are interned, so we can compare symbolOops directly |
duke@435 | 424 | symbolOop cp_name = klass_name_at(which); |
duke@435 | 425 | return (cp_name == k->name()); |
duke@435 | 426 | } |
duke@435 | 427 | |
duke@435 | 428 | |
duke@435 | 429 | int constantPoolOopDesc::pre_resolve_shared_klasses(TRAPS) { |
duke@435 | 430 | ResourceMark rm; |
duke@435 | 431 | int count = 0; |
duke@435 | 432 | for (int index = 1; index < tags()->length(); index++) { // Index 0 is unused |
duke@435 | 433 | if (tag_at(index).is_unresolved_string()) { |
duke@435 | 434 | // Intern string |
duke@435 | 435 | symbolOop sym = unresolved_string_at(index); |
duke@435 | 436 | oop entry = StringTable::intern(sym, CHECK_(-1)); |
duke@435 | 437 | string_at_put(index, entry); |
duke@435 | 438 | } |
duke@435 | 439 | } |
duke@435 | 440 | return count; |
duke@435 | 441 | } |
duke@435 | 442 | |
duke@435 | 443 | |
duke@435 | 444 | // Iterate over symbols which are used as class, field, method names and |
duke@435 | 445 | // signatures (in preparation for writing to the shared archive). |
duke@435 | 446 | |
duke@435 | 447 | void constantPoolOopDesc::shared_symbols_iterate(OopClosure* closure) { |
duke@435 | 448 | for (int index = 1; index < length(); index++) { // Index 0 is unused |
duke@435 | 449 | switch (tag_at(index).value()) { |
duke@435 | 450 | |
duke@435 | 451 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 452 | closure->do_oop(obj_at_addr(index)); |
duke@435 | 453 | break; |
duke@435 | 454 | |
duke@435 | 455 | case JVM_CONSTANT_NameAndType: |
duke@435 | 456 | { |
duke@435 | 457 | int i = *int_at_addr(index); |
duke@435 | 458 | closure->do_oop(obj_at_addr((unsigned)i >> 16)); |
duke@435 | 459 | closure->do_oop(obj_at_addr((unsigned)i & 0xffff)); |
duke@435 | 460 | } |
duke@435 | 461 | break; |
duke@435 | 462 | |
duke@435 | 463 | case JVM_CONSTANT_Class: |
duke@435 | 464 | case JVM_CONSTANT_InterfaceMethodref: |
duke@435 | 465 | case JVM_CONSTANT_Fieldref: |
duke@435 | 466 | case JVM_CONSTANT_Methodref: |
duke@435 | 467 | case JVM_CONSTANT_Integer: |
duke@435 | 468 | case JVM_CONSTANT_Float: |
duke@435 | 469 | // Do nothing! Not an oop. |
duke@435 | 470 | // These constant types do not reference symbols at this point. |
duke@435 | 471 | break; |
duke@435 | 472 | |
duke@435 | 473 | case JVM_CONSTANT_String: |
duke@435 | 474 | // Do nothing! Not a symbol. |
duke@435 | 475 | break; |
duke@435 | 476 | |
duke@435 | 477 | case JVM_CONSTANT_UnresolvedString: |
duke@435 | 478 | case JVM_CONSTANT_Utf8: |
duke@435 | 479 | // These constants are symbols, but unless these symbols are |
duke@435 | 480 | // actually to be used for something, we don't want to mark them. |
duke@435 | 481 | break; |
duke@435 | 482 | |
duke@435 | 483 | case JVM_CONSTANT_Long: |
duke@435 | 484 | case JVM_CONSTANT_Double: |
duke@435 | 485 | // Do nothing! Not an oop. (But takes two pool entries.) |
duke@435 | 486 | ++index; |
duke@435 | 487 | break; |
duke@435 | 488 | |
duke@435 | 489 | default: |
duke@435 | 490 | ShouldNotReachHere(); |
duke@435 | 491 | break; |
duke@435 | 492 | } |
duke@435 | 493 | } |
duke@435 | 494 | } |
duke@435 | 495 | |
duke@435 | 496 | |
duke@435 | 497 | // Iterate over the [one] tags array (in preparation for writing to the |
duke@435 | 498 | // shared archive). |
duke@435 | 499 | |
duke@435 | 500 | void constantPoolOopDesc::shared_tags_iterate(OopClosure* closure) { |
duke@435 | 501 | closure->do_oop(tags_addr()); |
duke@435 | 502 | } |
duke@435 | 503 | |
duke@435 | 504 | |
duke@435 | 505 | // Iterate over String objects (in preparation for writing to the shared |
duke@435 | 506 | // archive). |
duke@435 | 507 | |
duke@435 | 508 | void constantPoolOopDesc::shared_strings_iterate(OopClosure* closure) { |
duke@435 | 509 | for (int index = 1; index < length(); index++) { // Index 0 is unused |
duke@435 | 510 | switch (tag_at(index).value()) { |
duke@435 | 511 | |
duke@435 | 512 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 513 | case JVM_CONSTANT_NameAndType: |
duke@435 | 514 | // Do nothing! Not a String. |
duke@435 | 515 | break; |
duke@435 | 516 | |
duke@435 | 517 | case JVM_CONSTANT_Class: |
duke@435 | 518 | case JVM_CONSTANT_InterfaceMethodref: |
duke@435 | 519 | case JVM_CONSTANT_Fieldref: |
duke@435 | 520 | case JVM_CONSTANT_Methodref: |
duke@435 | 521 | case JVM_CONSTANT_Integer: |
duke@435 | 522 | case JVM_CONSTANT_Float: |
duke@435 | 523 | // Do nothing! Not an oop. |
duke@435 | 524 | // These constant types do not reference symbols at this point. |
duke@435 | 525 | break; |
duke@435 | 526 | |
duke@435 | 527 | case JVM_CONSTANT_String: |
duke@435 | 528 | closure->do_oop(obj_at_addr(index)); |
duke@435 | 529 | break; |
duke@435 | 530 | |
duke@435 | 531 | case JVM_CONSTANT_UnresolvedString: |
duke@435 | 532 | case JVM_CONSTANT_Utf8: |
duke@435 | 533 | // These constants are symbols, but unless these symbols are |
duke@435 | 534 | // actually to be used for something, we don't want to mark them. |
duke@435 | 535 | break; |
duke@435 | 536 | |
duke@435 | 537 | case JVM_CONSTANT_Long: |
duke@435 | 538 | case JVM_CONSTANT_Double: |
duke@435 | 539 | // Do nothing! Not an oop. (But takes two pool entries.) |
duke@435 | 540 | ++index; |
duke@435 | 541 | break; |
duke@435 | 542 | |
duke@435 | 543 | default: |
duke@435 | 544 | ShouldNotReachHere(); |
duke@435 | 545 | break; |
duke@435 | 546 | } |
duke@435 | 547 | } |
duke@435 | 548 | } |
duke@435 | 549 | |
duke@435 | 550 | |
duke@435 | 551 | // Compare this constant pool's entry at index1 to the constant pool |
duke@435 | 552 | // cp2's entry at index2. |
duke@435 | 553 | bool constantPoolOopDesc::compare_entry_to(int index1, constantPoolHandle cp2, |
duke@435 | 554 | int index2, TRAPS) { |
duke@435 | 555 | |
duke@435 | 556 | jbyte t1 = tag_at(index1).value(); |
duke@435 | 557 | jbyte t2 = cp2->tag_at(index2).value(); |
duke@435 | 558 | |
duke@435 | 559 | |
duke@435 | 560 | // JVM_CONSTANT_UnresolvedClassInError is equal to JVM_CONSTANT_UnresolvedClass |
duke@435 | 561 | // when comparing |
duke@435 | 562 | if (t1 == JVM_CONSTANT_UnresolvedClassInError) { |
duke@435 | 563 | t1 = JVM_CONSTANT_UnresolvedClass; |
duke@435 | 564 | } |
duke@435 | 565 | if (t2 == JVM_CONSTANT_UnresolvedClassInError) { |
duke@435 | 566 | t2 = JVM_CONSTANT_UnresolvedClass; |
duke@435 | 567 | } |
duke@435 | 568 | |
duke@435 | 569 | if (t1 != t2) { |
duke@435 | 570 | // Not the same entry type so there is nothing else to check. Note |
duke@435 | 571 | // that this style of checking will consider resolved/unresolved |
duke@435 | 572 | // class pairs and resolved/unresolved string pairs as different. |
duke@435 | 573 | // From the constantPoolOop API point of view, this is correct |
duke@435 | 574 | // behavior. See constantPoolKlass::merge() to see how this plays |
duke@435 | 575 | // out in the context of constantPoolOop merging. |
duke@435 | 576 | return false; |
duke@435 | 577 | } |
duke@435 | 578 | |
duke@435 | 579 | switch (t1) { |
duke@435 | 580 | case JVM_CONSTANT_Class: |
duke@435 | 581 | { |
duke@435 | 582 | klassOop k1 = klass_at(index1, CHECK_false); |
duke@435 | 583 | klassOop k2 = cp2->klass_at(index2, CHECK_false); |
duke@435 | 584 | if (k1 == k2) { |
duke@435 | 585 | return true; |
duke@435 | 586 | } |
duke@435 | 587 | } break; |
duke@435 | 588 | |
duke@435 | 589 | case JVM_CONSTANT_ClassIndex: |
duke@435 | 590 | { |
duke@435 | 591 | int recur1 = klass_index_at(index1); |
duke@435 | 592 | int recur2 = cp2->klass_index_at(index2); |
duke@435 | 593 | bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 594 | if (match) { |
duke@435 | 595 | return true; |
duke@435 | 596 | } |
duke@435 | 597 | } break; |
duke@435 | 598 | |
duke@435 | 599 | case JVM_CONSTANT_Double: |
duke@435 | 600 | { |
duke@435 | 601 | jdouble d1 = double_at(index1); |
duke@435 | 602 | jdouble d2 = cp2->double_at(index2); |
duke@435 | 603 | if (d1 == d2) { |
duke@435 | 604 | return true; |
duke@435 | 605 | } |
duke@435 | 606 | } break; |
duke@435 | 607 | |
duke@435 | 608 | case JVM_CONSTANT_Fieldref: |
duke@435 | 609 | case JVM_CONSTANT_InterfaceMethodref: |
duke@435 | 610 | case JVM_CONSTANT_Methodref: |
duke@435 | 611 | { |
duke@435 | 612 | int recur1 = uncached_klass_ref_index_at(index1); |
duke@435 | 613 | int recur2 = cp2->uncached_klass_ref_index_at(index2); |
duke@435 | 614 | bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 615 | if (match) { |
duke@435 | 616 | recur1 = uncached_name_and_type_ref_index_at(index1); |
duke@435 | 617 | recur2 = cp2->uncached_name_and_type_ref_index_at(index2); |
duke@435 | 618 | match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 619 | if (match) { |
duke@435 | 620 | return true; |
duke@435 | 621 | } |
duke@435 | 622 | } |
duke@435 | 623 | } break; |
duke@435 | 624 | |
duke@435 | 625 | case JVM_CONSTANT_Float: |
duke@435 | 626 | { |
duke@435 | 627 | jfloat f1 = float_at(index1); |
duke@435 | 628 | jfloat f2 = cp2->float_at(index2); |
duke@435 | 629 | if (f1 == f2) { |
duke@435 | 630 | return true; |
duke@435 | 631 | } |
duke@435 | 632 | } break; |
duke@435 | 633 | |
duke@435 | 634 | case JVM_CONSTANT_Integer: |
duke@435 | 635 | { |
duke@435 | 636 | jint i1 = int_at(index1); |
duke@435 | 637 | jint i2 = cp2->int_at(index2); |
duke@435 | 638 | if (i1 == i2) { |
duke@435 | 639 | return true; |
duke@435 | 640 | } |
duke@435 | 641 | } break; |
duke@435 | 642 | |
duke@435 | 643 | case JVM_CONSTANT_Long: |
duke@435 | 644 | { |
duke@435 | 645 | jlong l1 = long_at(index1); |
duke@435 | 646 | jlong l2 = cp2->long_at(index2); |
duke@435 | 647 | if (l1 == l2) { |
duke@435 | 648 | return true; |
duke@435 | 649 | } |
duke@435 | 650 | } break; |
duke@435 | 651 | |
duke@435 | 652 | case JVM_CONSTANT_NameAndType: |
duke@435 | 653 | { |
duke@435 | 654 | int recur1 = name_ref_index_at(index1); |
duke@435 | 655 | int recur2 = cp2->name_ref_index_at(index2); |
duke@435 | 656 | bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 657 | if (match) { |
duke@435 | 658 | recur1 = signature_ref_index_at(index1); |
duke@435 | 659 | recur2 = cp2->signature_ref_index_at(index2); |
duke@435 | 660 | match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 661 | if (match) { |
duke@435 | 662 | return true; |
duke@435 | 663 | } |
duke@435 | 664 | } |
duke@435 | 665 | } break; |
duke@435 | 666 | |
duke@435 | 667 | case JVM_CONSTANT_String: |
duke@435 | 668 | { |
duke@435 | 669 | oop s1 = string_at(index1, CHECK_false); |
duke@435 | 670 | oop s2 = cp2->string_at(index2, CHECK_false); |
duke@435 | 671 | if (s1 == s2) { |
duke@435 | 672 | return true; |
duke@435 | 673 | } |
duke@435 | 674 | } break; |
duke@435 | 675 | |
duke@435 | 676 | case JVM_CONSTANT_StringIndex: |
duke@435 | 677 | { |
duke@435 | 678 | int recur1 = string_index_at(index1); |
duke@435 | 679 | int recur2 = cp2->string_index_at(index2); |
duke@435 | 680 | bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); |
duke@435 | 681 | if (match) { |
duke@435 | 682 | return true; |
duke@435 | 683 | } |
duke@435 | 684 | } break; |
duke@435 | 685 | |
duke@435 | 686 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 687 | { |
duke@435 | 688 | symbolOop k1 = unresolved_klass_at(index1); |
duke@435 | 689 | symbolOop k2 = cp2->unresolved_klass_at(index2); |
duke@435 | 690 | if (k1 == k2) { |
duke@435 | 691 | return true; |
duke@435 | 692 | } |
duke@435 | 693 | } break; |
duke@435 | 694 | |
duke@435 | 695 | case JVM_CONSTANT_UnresolvedString: |
duke@435 | 696 | { |
duke@435 | 697 | symbolOop s1 = unresolved_string_at(index1); |
duke@435 | 698 | symbolOop s2 = cp2->unresolved_string_at(index2); |
duke@435 | 699 | if (s1 == s2) { |
duke@435 | 700 | return true; |
duke@435 | 701 | } |
duke@435 | 702 | } break; |
duke@435 | 703 | |
duke@435 | 704 | case JVM_CONSTANT_Utf8: |
duke@435 | 705 | { |
duke@435 | 706 | symbolOop s1 = symbol_at(index1); |
duke@435 | 707 | symbolOop s2 = cp2->symbol_at(index2); |
duke@435 | 708 | if (s1 == s2) { |
duke@435 | 709 | return true; |
duke@435 | 710 | } |
duke@435 | 711 | } break; |
duke@435 | 712 | |
duke@435 | 713 | // Invalid is used as the tag for the second constant pool entry |
duke@435 | 714 | // occupied by JVM_CONSTANT_Double or JVM_CONSTANT_Long. It should |
duke@435 | 715 | // not be seen by itself. |
duke@435 | 716 | case JVM_CONSTANT_Invalid: // fall through |
duke@435 | 717 | |
duke@435 | 718 | default: |
duke@435 | 719 | ShouldNotReachHere(); |
duke@435 | 720 | break; |
duke@435 | 721 | } |
duke@435 | 722 | |
duke@435 | 723 | return false; |
duke@435 | 724 | } // end compare_entry_to() |
duke@435 | 725 | |
duke@435 | 726 | |
duke@435 | 727 | // Copy this constant pool's entries at start_i to end_i (inclusive) |
duke@435 | 728 | // to the constant pool to_cp's entries starting at to_i. A total of |
duke@435 | 729 | // (end_i - start_i) + 1 entries are copied. |
duke@435 | 730 | void constantPoolOopDesc::copy_cp_to(int start_i, int end_i, |
duke@435 | 731 | constantPoolHandle to_cp, int to_i, TRAPS) { |
duke@435 | 732 | |
duke@435 | 733 | int dest_i = to_i; // leave original alone for debug purposes |
duke@435 | 734 | |
duke@435 | 735 | for (int src_i = start_i; src_i <= end_i; /* see loop bottom */ ) { |
duke@435 | 736 | copy_entry_to(src_i, to_cp, dest_i, CHECK); |
duke@435 | 737 | |
duke@435 | 738 | switch (tag_at(src_i).value()) { |
duke@435 | 739 | case JVM_CONSTANT_Double: |
duke@435 | 740 | case JVM_CONSTANT_Long: |
duke@435 | 741 | // double and long take two constant pool entries |
duke@435 | 742 | src_i += 2; |
duke@435 | 743 | dest_i += 2; |
duke@435 | 744 | break; |
duke@435 | 745 | |
duke@435 | 746 | default: |
duke@435 | 747 | // all others take one constant pool entry |
duke@435 | 748 | src_i++; |
duke@435 | 749 | dest_i++; |
duke@435 | 750 | break; |
duke@435 | 751 | } |
duke@435 | 752 | } |
duke@435 | 753 | } // end copy_cp_to() |
duke@435 | 754 | |
duke@435 | 755 | |
duke@435 | 756 | // Copy this constant pool's entry at from_i to the constant pool |
duke@435 | 757 | // to_cp's entry at to_i. |
duke@435 | 758 | void constantPoolOopDesc::copy_entry_to(int from_i, constantPoolHandle to_cp, |
duke@435 | 759 | int to_i, TRAPS) { |
duke@435 | 760 | |
duke@435 | 761 | switch (tag_at(from_i).value()) { |
duke@435 | 762 | case JVM_CONSTANT_Class: |
duke@435 | 763 | { |
duke@435 | 764 | klassOop k = klass_at(from_i, CHECK); |
duke@435 | 765 | to_cp->klass_at_put(to_i, k); |
duke@435 | 766 | } break; |
duke@435 | 767 | |
duke@435 | 768 | case JVM_CONSTANT_ClassIndex: |
duke@435 | 769 | { |
duke@435 | 770 | jint ki = klass_index_at(from_i); |
duke@435 | 771 | to_cp->klass_index_at_put(to_i, ki); |
duke@435 | 772 | } break; |
duke@435 | 773 | |
duke@435 | 774 | case JVM_CONSTANT_Double: |
duke@435 | 775 | { |
duke@435 | 776 | jdouble d = double_at(from_i); |
duke@435 | 777 | to_cp->double_at_put(to_i, d); |
duke@435 | 778 | // double takes two constant pool entries so init second entry's tag |
duke@435 | 779 | to_cp->tag_at_put(to_i + 1, JVM_CONSTANT_Invalid); |
duke@435 | 780 | } break; |
duke@435 | 781 | |
duke@435 | 782 | case JVM_CONSTANT_Fieldref: |
duke@435 | 783 | { |
duke@435 | 784 | int class_index = uncached_klass_ref_index_at(from_i); |
duke@435 | 785 | int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); |
duke@435 | 786 | to_cp->field_at_put(to_i, class_index, name_and_type_index); |
duke@435 | 787 | } break; |
duke@435 | 788 | |
duke@435 | 789 | case JVM_CONSTANT_Float: |
duke@435 | 790 | { |
duke@435 | 791 | jfloat f = float_at(from_i); |
duke@435 | 792 | to_cp->float_at_put(to_i, f); |
duke@435 | 793 | } break; |
duke@435 | 794 | |
duke@435 | 795 | case JVM_CONSTANT_Integer: |
duke@435 | 796 | { |
duke@435 | 797 | jint i = int_at(from_i); |
duke@435 | 798 | to_cp->int_at_put(to_i, i); |
duke@435 | 799 | } break; |
duke@435 | 800 | |
duke@435 | 801 | case JVM_CONSTANT_InterfaceMethodref: |
duke@435 | 802 | { |
duke@435 | 803 | int class_index = uncached_klass_ref_index_at(from_i); |
duke@435 | 804 | int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); |
duke@435 | 805 | to_cp->interface_method_at_put(to_i, class_index, name_and_type_index); |
duke@435 | 806 | } break; |
duke@435 | 807 | |
duke@435 | 808 | case JVM_CONSTANT_Long: |
duke@435 | 809 | { |
duke@435 | 810 | jlong l = long_at(from_i); |
duke@435 | 811 | to_cp->long_at_put(to_i, l); |
duke@435 | 812 | // long takes two constant pool entries so init second entry's tag |
duke@435 | 813 | to_cp->tag_at_put(to_i + 1, JVM_CONSTANT_Invalid); |
duke@435 | 814 | } break; |
duke@435 | 815 | |
duke@435 | 816 | case JVM_CONSTANT_Methodref: |
duke@435 | 817 | { |
duke@435 | 818 | int class_index = uncached_klass_ref_index_at(from_i); |
duke@435 | 819 | int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); |
duke@435 | 820 | to_cp->method_at_put(to_i, class_index, name_and_type_index); |
duke@435 | 821 | } break; |
duke@435 | 822 | |
duke@435 | 823 | case JVM_CONSTANT_NameAndType: |
duke@435 | 824 | { |
duke@435 | 825 | int name_ref_index = name_ref_index_at(from_i); |
duke@435 | 826 | int signature_ref_index = signature_ref_index_at(from_i); |
duke@435 | 827 | to_cp->name_and_type_at_put(to_i, name_ref_index, signature_ref_index); |
duke@435 | 828 | } break; |
duke@435 | 829 | |
duke@435 | 830 | case JVM_CONSTANT_String: |
duke@435 | 831 | { |
duke@435 | 832 | oop s = string_at(from_i, CHECK); |
duke@435 | 833 | to_cp->string_at_put(to_i, s); |
duke@435 | 834 | } break; |
duke@435 | 835 | |
duke@435 | 836 | case JVM_CONSTANT_StringIndex: |
duke@435 | 837 | { |
duke@435 | 838 | jint si = string_index_at(from_i); |
duke@435 | 839 | to_cp->string_index_at_put(to_i, si); |
duke@435 | 840 | } break; |
duke@435 | 841 | |
duke@435 | 842 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 843 | { |
duke@435 | 844 | symbolOop k = unresolved_klass_at(from_i); |
duke@435 | 845 | to_cp->unresolved_klass_at_put(to_i, k); |
duke@435 | 846 | } break; |
duke@435 | 847 | |
duke@435 | 848 | case JVM_CONSTANT_UnresolvedClassInError: |
duke@435 | 849 | { |
duke@435 | 850 | symbolOop k = unresolved_klass_at(from_i); |
duke@435 | 851 | to_cp->unresolved_klass_at_put(to_i, k); |
duke@435 | 852 | to_cp->tag_at_put(to_i, JVM_CONSTANT_UnresolvedClassInError); |
duke@435 | 853 | } break; |
duke@435 | 854 | |
duke@435 | 855 | |
duke@435 | 856 | case JVM_CONSTANT_UnresolvedString: |
duke@435 | 857 | { |
duke@435 | 858 | symbolOop s = unresolved_string_at(from_i); |
duke@435 | 859 | to_cp->unresolved_string_at_put(to_i, s); |
duke@435 | 860 | } break; |
duke@435 | 861 | |
duke@435 | 862 | case JVM_CONSTANT_Utf8: |
duke@435 | 863 | { |
duke@435 | 864 | symbolOop s = symbol_at(from_i); |
duke@435 | 865 | to_cp->symbol_at_put(to_i, s); |
duke@435 | 866 | } break; |
duke@435 | 867 | |
duke@435 | 868 | // Invalid is used as the tag for the second constant pool entry |
duke@435 | 869 | // occupied by JVM_CONSTANT_Double or JVM_CONSTANT_Long. It should |
duke@435 | 870 | // not be seen by itself. |
duke@435 | 871 | case JVM_CONSTANT_Invalid: // fall through |
duke@435 | 872 | |
duke@435 | 873 | default: |
duke@435 | 874 | { |
duke@435 | 875 | jbyte bad_value = tag_at(from_i).value(); // leave a breadcrumb |
duke@435 | 876 | ShouldNotReachHere(); |
duke@435 | 877 | } break; |
duke@435 | 878 | } |
duke@435 | 879 | } // end copy_entry_to() |
duke@435 | 880 | |
duke@435 | 881 | |
duke@435 | 882 | // Search constant pool search_cp for an entry that matches this |
duke@435 | 883 | // constant pool's entry at pattern_i. Returns the index of a |
duke@435 | 884 | // matching entry or zero (0) if there is no matching entry. |
duke@435 | 885 | int constantPoolOopDesc::find_matching_entry(int pattern_i, |
duke@435 | 886 | constantPoolHandle search_cp, TRAPS) { |
duke@435 | 887 | |
duke@435 | 888 | // index zero (0) is not used |
duke@435 | 889 | for (int i = 1; i < search_cp->length(); i++) { |
duke@435 | 890 | bool found = compare_entry_to(pattern_i, search_cp, i, CHECK_0); |
duke@435 | 891 | if (found) { |
duke@435 | 892 | return i; |
duke@435 | 893 | } |
duke@435 | 894 | } |
duke@435 | 895 | |
duke@435 | 896 | return 0; // entry not found; return unused index zero (0) |
duke@435 | 897 | } // end find_matching_entry() |
duke@435 | 898 | |
duke@435 | 899 | |
duke@435 | 900 | #ifndef PRODUCT |
duke@435 | 901 | |
duke@435 | 902 | const char* constantPoolOopDesc::printable_name_at(int which) { |
duke@435 | 903 | |
duke@435 | 904 | constantTag tag = tag_at(which); |
duke@435 | 905 | |
duke@435 | 906 | if (tag.is_unresolved_string() || tag.is_string()) { |
duke@435 | 907 | return string_at_noresolve(which); |
duke@435 | 908 | } else if (tag.is_klass() || tag.is_unresolved_klass()) { |
duke@435 | 909 | return klass_name_at(which)->as_C_string(); |
duke@435 | 910 | } else if (tag.is_symbol()) { |
duke@435 | 911 | return symbol_at(which)->as_C_string(); |
duke@435 | 912 | } |
duke@435 | 913 | return ""; |
duke@435 | 914 | } |
duke@435 | 915 | |
duke@435 | 916 | #endif // PRODUCT |
duke@435 | 917 | |
duke@435 | 918 | |
duke@435 | 919 | // JVMTI GetConstantPool support |
duke@435 | 920 | |
duke@435 | 921 | // For temporary use until code is stable. |
duke@435 | 922 | #define DBG(code) |
duke@435 | 923 | |
duke@435 | 924 | static const char* WARN_MSG = "Must not be such entry!"; |
duke@435 | 925 | |
duke@435 | 926 | static void print_cpool_bytes(jint cnt, u1 *bytes) { |
duke@435 | 927 | jint size = 0; |
duke@435 | 928 | u2 idx1, idx2; |
duke@435 | 929 | |
duke@435 | 930 | for (jint idx = 1; idx < cnt; idx++) { |
duke@435 | 931 | jint ent_size = 0; |
duke@435 | 932 | u1 tag = *bytes++; |
duke@435 | 933 | size++; // count tag |
duke@435 | 934 | |
duke@435 | 935 | printf("const #%03d, tag: %02d ", idx, tag); |
duke@435 | 936 | switch(tag) { |
duke@435 | 937 | case JVM_CONSTANT_Invalid: { |
duke@435 | 938 | printf("Invalid"); |
duke@435 | 939 | break; |
duke@435 | 940 | } |
duke@435 | 941 | case JVM_CONSTANT_Unicode: { |
duke@435 | 942 | printf("Unicode %s", WARN_MSG); |
duke@435 | 943 | break; |
duke@435 | 944 | } |
duke@435 | 945 | case JVM_CONSTANT_Utf8: { |
duke@435 | 946 | u2 len = Bytes::get_Java_u2(bytes); |
duke@435 | 947 | char str[128]; |
duke@435 | 948 | if (len > 127) { |
duke@435 | 949 | len = 127; |
duke@435 | 950 | } |
duke@435 | 951 | strncpy(str, (char *) (bytes+2), len); |
duke@435 | 952 | str[len] = '\0'; |
duke@435 | 953 | printf("Utf8 \"%s\"", str); |
duke@435 | 954 | ent_size = 2 + len; |
duke@435 | 955 | break; |
duke@435 | 956 | } |
duke@435 | 957 | case JVM_CONSTANT_Integer: { |
duke@435 | 958 | u4 val = Bytes::get_Java_u4(bytes); |
duke@435 | 959 | printf("int %d", *(int *) &val); |
duke@435 | 960 | ent_size = 4; |
duke@435 | 961 | break; |
duke@435 | 962 | } |
duke@435 | 963 | case JVM_CONSTANT_Float: { |
duke@435 | 964 | u4 val = Bytes::get_Java_u4(bytes); |
duke@435 | 965 | printf("float %5.3ff", *(float *) &val); |
duke@435 | 966 | ent_size = 4; |
duke@435 | 967 | break; |
duke@435 | 968 | } |
duke@435 | 969 | case JVM_CONSTANT_Long: { |
duke@435 | 970 | u8 val = Bytes::get_Java_u8(bytes); |
xlu@948 | 971 | printf("long "INT64_FORMAT, *(jlong *) &val); |
duke@435 | 972 | ent_size = 8; |
duke@435 | 973 | idx++; // Long takes two cpool slots |
duke@435 | 974 | break; |
duke@435 | 975 | } |
duke@435 | 976 | case JVM_CONSTANT_Double: { |
duke@435 | 977 | u8 val = Bytes::get_Java_u8(bytes); |
duke@435 | 978 | printf("double %5.3fd", *(jdouble *)&val); |
duke@435 | 979 | ent_size = 8; |
duke@435 | 980 | idx++; // Double takes two cpool slots |
duke@435 | 981 | break; |
duke@435 | 982 | } |
duke@435 | 983 | case JVM_CONSTANT_Class: { |
duke@435 | 984 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 985 | printf("class #%03d", idx1); |
duke@435 | 986 | ent_size = 2; |
duke@435 | 987 | break; |
duke@435 | 988 | } |
duke@435 | 989 | case JVM_CONSTANT_String: { |
duke@435 | 990 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 991 | printf("String #%03d", idx1); |
duke@435 | 992 | ent_size = 2; |
duke@435 | 993 | break; |
duke@435 | 994 | } |
duke@435 | 995 | case JVM_CONSTANT_Fieldref: { |
duke@435 | 996 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 997 | idx2 = Bytes::get_Java_u2(bytes+2); |
duke@435 | 998 | printf("Field #%03d, #%03d", (int) idx1, (int) idx2); |
duke@435 | 999 | ent_size = 4; |
duke@435 | 1000 | break; |
duke@435 | 1001 | } |
duke@435 | 1002 | case JVM_CONSTANT_Methodref: { |
duke@435 | 1003 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 1004 | idx2 = Bytes::get_Java_u2(bytes+2); |
duke@435 | 1005 | printf("Method #%03d, #%03d", idx1, idx2); |
duke@435 | 1006 | ent_size = 4; |
duke@435 | 1007 | break; |
duke@435 | 1008 | } |
duke@435 | 1009 | case JVM_CONSTANT_InterfaceMethodref: { |
duke@435 | 1010 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 1011 | idx2 = Bytes::get_Java_u2(bytes+2); |
duke@435 | 1012 | printf("InterfMethod #%03d, #%03d", idx1, idx2); |
duke@435 | 1013 | ent_size = 4; |
duke@435 | 1014 | break; |
duke@435 | 1015 | } |
duke@435 | 1016 | case JVM_CONSTANT_NameAndType: { |
duke@435 | 1017 | idx1 = Bytes::get_Java_u2(bytes); |
duke@435 | 1018 | idx2 = Bytes::get_Java_u2(bytes+2); |
duke@435 | 1019 | printf("NameAndType #%03d, #%03d", idx1, idx2); |
duke@435 | 1020 | ent_size = 4; |
duke@435 | 1021 | break; |
duke@435 | 1022 | } |
duke@435 | 1023 | case JVM_CONSTANT_ClassIndex: { |
duke@435 | 1024 | printf("ClassIndex %s", WARN_MSG); |
duke@435 | 1025 | break; |
duke@435 | 1026 | } |
duke@435 | 1027 | case JVM_CONSTANT_UnresolvedClass: { |
duke@435 | 1028 | printf("UnresolvedClass: %s", WARN_MSG); |
duke@435 | 1029 | break; |
duke@435 | 1030 | } |
duke@435 | 1031 | case JVM_CONSTANT_UnresolvedClassInError: { |
duke@435 | 1032 | printf("UnresolvedClassInErr: %s", WARN_MSG); |
duke@435 | 1033 | break; |
duke@435 | 1034 | } |
duke@435 | 1035 | case JVM_CONSTANT_StringIndex: { |
duke@435 | 1036 | printf("StringIndex: %s", WARN_MSG); |
duke@435 | 1037 | break; |
duke@435 | 1038 | } |
duke@435 | 1039 | case JVM_CONSTANT_UnresolvedString: { |
duke@435 | 1040 | printf("UnresolvedString: %s", WARN_MSG); |
duke@435 | 1041 | break; |
duke@435 | 1042 | } |
duke@435 | 1043 | } |
duke@435 | 1044 | printf(";\n"); |
duke@435 | 1045 | bytes += ent_size; |
duke@435 | 1046 | size += ent_size; |
duke@435 | 1047 | } |
duke@435 | 1048 | printf("Cpool size: %d\n", size); |
duke@435 | 1049 | fflush(0); |
duke@435 | 1050 | return; |
duke@435 | 1051 | } /* end print_cpool_bytes */ |
duke@435 | 1052 | |
duke@435 | 1053 | |
duke@435 | 1054 | // Returns size of constant pool entry. |
duke@435 | 1055 | jint constantPoolOopDesc::cpool_entry_size(jint idx) { |
duke@435 | 1056 | switch(tag_at(idx).value()) { |
duke@435 | 1057 | case JVM_CONSTANT_Invalid: |
duke@435 | 1058 | case JVM_CONSTANT_Unicode: |
duke@435 | 1059 | return 1; |
duke@435 | 1060 | |
duke@435 | 1061 | case JVM_CONSTANT_Utf8: |
duke@435 | 1062 | return 3 + symbol_at(idx)->utf8_length(); |
duke@435 | 1063 | |
duke@435 | 1064 | case JVM_CONSTANT_Class: |
duke@435 | 1065 | case JVM_CONSTANT_String: |
duke@435 | 1066 | case JVM_CONSTANT_ClassIndex: |
duke@435 | 1067 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 1068 | case JVM_CONSTANT_UnresolvedClassInError: |
duke@435 | 1069 | case JVM_CONSTANT_StringIndex: |
duke@435 | 1070 | case JVM_CONSTANT_UnresolvedString: |
duke@435 | 1071 | return 3; |
duke@435 | 1072 | |
duke@435 | 1073 | case JVM_CONSTANT_Integer: |
duke@435 | 1074 | case JVM_CONSTANT_Float: |
duke@435 | 1075 | case JVM_CONSTANT_Fieldref: |
duke@435 | 1076 | case JVM_CONSTANT_Methodref: |
duke@435 | 1077 | case JVM_CONSTANT_InterfaceMethodref: |
duke@435 | 1078 | case JVM_CONSTANT_NameAndType: |
duke@435 | 1079 | return 5; |
duke@435 | 1080 | |
duke@435 | 1081 | case JVM_CONSTANT_Long: |
duke@435 | 1082 | case JVM_CONSTANT_Double: |
duke@435 | 1083 | return 9; |
duke@435 | 1084 | } |
duke@435 | 1085 | assert(false, "cpool_entry_size: Invalid constant pool entry tag"); |
duke@435 | 1086 | return 1; |
duke@435 | 1087 | } /* end cpool_entry_size */ |
duke@435 | 1088 | |
duke@435 | 1089 | |
duke@435 | 1090 | // SymbolHashMap is used to find a constant pool index from a string. |
duke@435 | 1091 | // This function fills in SymbolHashMaps, one for utf8s and one for |
duke@435 | 1092 | // class names, returns size of the cpool raw bytes. |
duke@435 | 1093 | jint constantPoolOopDesc::hash_entries_to(SymbolHashMap *symmap, |
duke@435 | 1094 | SymbolHashMap *classmap) { |
duke@435 | 1095 | jint size = 0; |
duke@435 | 1096 | |
duke@435 | 1097 | for (u2 idx = 1; idx < length(); idx++) { |
duke@435 | 1098 | u2 tag = tag_at(idx).value(); |
duke@435 | 1099 | size += cpool_entry_size(idx); |
duke@435 | 1100 | |
duke@435 | 1101 | switch(tag) { |
duke@435 | 1102 | case JVM_CONSTANT_Utf8: { |
duke@435 | 1103 | symbolOop sym = symbol_at(idx); |
duke@435 | 1104 | symmap->add_entry(sym, idx); |
duke@435 | 1105 | DBG(printf("adding symbol entry %s = %d\n", sym->as_utf8(), idx)); |
duke@435 | 1106 | break; |
duke@435 | 1107 | } |
duke@435 | 1108 | case JVM_CONSTANT_Class: |
duke@435 | 1109 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 1110 | case JVM_CONSTANT_UnresolvedClassInError: { |
duke@435 | 1111 | symbolOop sym = klass_name_at(idx); |
duke@435 | 1112 | classmap->add_entry(sym, idx); |
duke@435 | 1113 | DBG(printf("adding class entry %s = %d\n", sym->as_utf8(), idx)); |
duke@435 | 1114 | break; |
duke@435 | 1115 | } |
duke@435 | 1116 | case JVM_CONSTANT_Long: |
duke@435 | 1117 | case JVM_CONSTANT_Double: { |
duke@435 | 1118 | idx++; // Both Long and Double take two cpool slots |
duke@435 | 1119 | break; |
duke@435 | 1120 | } |
duke@435 | 1121 | } |
duke@435 | 1122 | } |
duke@435 | 1123 | return size; |
duke@435 | 1124 | } /* end hash_utf8_entries_to */ |
duke@435 | 1125 | |
duke@435 | 1126 | |
duke@435 | 1127 | // Copy cpool bytes. |
duke@435 | 1128 | // Returns: |
duke@435 | 1129 | // 0, in case of OutOfMemoryError |
duke@435 | 1130 | // -1, in case of internal error |
duke@435 | 1131 | // > 0, count of the raw cpool bytes that have been copied |
duke@435 | 1132 | int constantPoolOopDesc::copy_cpool_bytes(int cpool_size, |
duke@435 | 1133 | SymbolHashMap* tbl, |
duke@435 | 1134 | unsigned char *bytes) { |
duke@435 | 1135 | u2 idx1, idx2; |
duke@435 | 1136 | jint size = 0; |
duke@435 | 1137 | jint cnt = length(); |
duke@435 | 1138 | unsigned char *start_bytes = bytes; |
duke@435 | 1139 | |
duke@435 | 1140 | for (jint idx = 1; idx < cnt; idx++) { |
duke@435 | 1141 | u1 tag = tag_at(idx).value(); |
duke@435 | 1142 | jint ent_size = cpool_entry_size(idx); |
duke@435 | 1143 | |
duke@435 | 1144 | assert(size + ent_size <= cpool_size, "Size mismatch"); |
duke@435 | 1145 | |
duke@435 | 1146 | *bytes = tag; |
duke@435 | 1147 | DBG(printf("#%03hd tag=%03hd, ", idx, tag)); |
duke@435 | 1148 | switch(tag) { |
duke@435 | 1149 | case JVM_CONSTANT_Invalid: { |
duke@435 | 1150 | DBG(printf("JVM_CONSTANT_Invalid")); |
duke@435 | 1151 | break; |
duke@435 | 1152 | } |
duke@435 | 1153 | case JVM_CONSTANT_Unicode: { |
duke@435 | 1154 | assert(false, "Wrong constant pool tag: JVM_CONSTANT_Unicode"); |
duke@435 | 1155 | DBG(printf("JVM_CONSTANT_Unicode")); |
duke@435 | 1156 | break; |
duke@435 | 1157 | } |
duke@435 | 1158 | case JVM_CONSTANT_Utf8: { |
duke@435 | 1159 | symbolOop sym = symbol_at(idx); |
duke@435 | 1160 | char* str = sym->as_utf8(); |
duke@435 | 1161 | // Warning! It's crashing on x86 with len = sym->utf8_length() |
duke@435 | 1162 | int len = (int) strlen(str); |
duke@435 | 1163 | Bytes::put_Java_u2((address) (bytes+1), (u2) len); |
duke@435 | 1164 | for (int i = 0; i < len; i++) { |
duke@435 | 1165 | bytes[3+i] = (u1) str[i]; |
duke@435 | 1166 | } |
duke@435 | 1167 | DBG(printf("JVM_CONSTANT_Utf8: %s ", str)); |
duke@435 | 1168 | break; |
duke@435 | 1169 | } |
duke@435 | 1170 | case JVM_CONSTANT_Integer: { |
duke@435 | 1171 | jint val = int_at(idx); |
duke@435 | 1172 | Bytes::put_Java_u4((address) (bytes+1), *(u4*)&val); |
duke@435 | 1173 | break; |
duke@435 | 1174 | } |
duke@435 | 1175 | case JVM_CONSTANT_Float: { |
duke@435 | 1176 | jfloat val = float_at(idx); |
duke@435 | 1177 | Bytes::put_Java_u4((address) (bytes+1), *(u4*)&val); |
duke@435 | 1178 | break; |
duke@435 | 1179 | } |
duke@435 | 1180 | case JVM_CONSTANT_Long: { |
duke@435 | 1181 | jlong val = long_at(idx); |
duke@435 | 1182 | Bytes::put_Java_u8((address) (bytes+1), *(u8*)&val); |
duke@435 | 1183 | idx++; // Long takes two cpool slots |
duke@435 | 1184 | break; |
duke@435 | 1185 | } |
duke@435 | 1186 | case JVM_CONSTANT_Double: { |
duke@435 | 1187 | jdouble val = double_at(idx); |
duke@435 | 1188 | Bytes::put_Java_u8((address) (bytes+1), *(u8*)&val); |
duke@435 | 1189 | idx++; // Double takes two cpool slots |
duke@435 | 1190 | break; |
duke@435 | 1191 | } |
duke@435 | 1192 | case JVM_CONSTANT_Class: |
duke@435 | 1193 | case JVM_CONSTANT_UnresolvedClass: |
duke@435 | 1194 | case JVM_CONSTANT_UnresolvedClassInError: { |
duke@435 | 1195 | *bytes = JVM_CONSTANT_Class; |
duke@435 | 1196 | symbolOop sym = klass_name_at(idx); |
duke@435 | 1197 | idx1 = tbl->symbol_to_value(sym); |
duke@435 | 1198 | assert(idx1 != 0, "Have not found a hashtable entry"); |
duke@435 | 1199 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1200 | DBG(printf("JVM_CONSTANT_Class: idx=#%03hd, %s", idx1, sym->as_utf8())); |
duke@435 | 1201 | break; |
duke@435 | 1202 | } |
duke@435 | 1203 | case JVM_CONSTANT_String: { |
duke@435 | 1204 | unsigned int hash; |
duke@435 | 1205 | char *str = string_at_noresolve(idx); |
duke@435 | 1206 | symbolOop sym = SymbolTable::lookup_only(str, (int) strlen(str), hash); |
thurka@1208 | 1207 | if (sym == NULL) { |
thurka@1208 | 1208 | // sym can be NULL if string refers to incorrectly encoded JVM_CONSTANT_Utf8 |
thurka@1208 | 1209 | // this can happen with JVM TI; see CR 6839599 for more details |
thurka@1208 | 1210 | oop string = *(obj_at_addr(idx)); |
thurka@1208 | 1211 | assert(java_lang_String::is_instance(string),"Not a String"); |
thurka@1208 | 1212 | DBG(printf("Error #%03hd tag=%03hd\n", idx, tag)); |
thurka@1208 | 1213 | idx1 = 0; |
thurka@1208 | 1214 | for (int j = 0; j < tbl->table_size() && idx1 == 0; j++) { |
thurka@1208 | 1215 | for (SymbolHashMapEntry* cur = tbl->bucket(j); cur != NULL; cur = cur->next()) { |
thurka@1208 | 1216 | int length; |
thurka@1208 | 1217 | sym = cur->symbol(); |
thurka@1208 | 1218 | jchar* chars = sym->as_unicode(length); |
thurka@1208 | 1219 | if (java_lang_String::equals(string, chars, length)) { |
thurka@1208 | 1220 | idx1 = cur->value(); |
thurka@1208 | 1221 | DBG(printf("Index found: %d\n",idx1)); |
thurka@1208 | 1222 | break; |
thurka@1208 | 1223 | } |
thurka@1208 | 1224 | } |
thurka@1208 | 1225 | } |
thurka@1208 | 1226 | } else { |
thurka@1208 | 1227 | idx1 = tbl->symbol_to_value(sym); |
thurka@1208 | 1228 | } |
duke@435 | 1229 | assert(idx1 != 0, "Have not found a hashtable entry"); |
duke@435 | 1230 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1231 | DBG(printf("JVM_CONSTANT_String: idx=#%03hd, %s", idx1, str)); |
duke@435 | 1232 | break; |
duke@435 | 1233 | } |
duke@435 | 1234 | case JVM_CONSTANT_UnresolvedString: { |
duke@435 | 1235 | *bytes = JVM_CONSTANT_String; |
duke@435 | 1236 | symbolOop sym = unresolved_string_at(idx); |
duke@435 | 1237 | idx1 = tbl->symbol_to_value(sym); |
duke@435 | 1238 | assert(idx1 != 0, "Have not found a hashtable entry"); |
duke@435 | 1239 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1240 | DBG(char *str = sym->as_utf8()); |
duke@435 | 1241 | DBG(printf("JVM_CONSTANT_UnresolvedString: idx=#%03hd, %s", idx1, str)); |
duke@435 | 1242 | break; |
duke@435 | 1243 | } |
duke@435 | 1244 | case JVM_CONSTANT_Fieldref: |
duke@435 | 1245 | case JVM_CONSTANT_Methodref: |
duke@435 | 1246 | case JVM_CONSTANT_InterfaceMethodref: { |
duke@435 | 1247 | idx1 = uncached_klass_ref_index_at(idx); |
duke@435 | 1248 | idx2 = uncached_name_and_type_ref_index_at(idx); |
duke@435 | 1249 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1250 | Bytes::put_Java_u2((address) (bytes+3), idx2); |
duke@435 | 1251 | DBG(printf("JVM_CONSTANT_Methodref: %hd %hd", idx1, idx2)); |
duke@435 | 1252 | break; |
duke@435 | 1253 | } |
duke@435 | 1254 | case JVM_CONSTANT_NameAndType: { |
duke@435 | 1255 | idx1 = name_ref_index_at(idx); |
duke@435 | 1256 | idx2 = signature_ref_index_at(idx); |
duke@435 | 1257 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1258 | Bytes::put_Java_u2((address) (bytes+3), idx2); |
duke@435 | 1259 | DBG(printf("JVM_CONSTANT_NameAndType: %hd %hd", idx1, idx2)); |
duke@435 | 1260 | break; |
duke@435 | 1261 | } |
duke@435 | 1262 | case JVM_CONSTANT_ClassIndex: { |
duke@435 | 1263 | *bytes = JVM_CONSTANT_Class; |
duke@435 | 1264 | idx1 = klass_index_at(idx); |
duke@435 | 1265 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1266 | DBG(printf("JVM_CONSTANT_ClassIndex: %hd", idx1)); |
duke@435 | 1267 | break; |
duke@435 | 1268 | } |
duke@435 | 1269 | case JVM_CONSTANT_StringIndex: { |
duke@435 | 1270 | *bytes = JVM_CONSTANT_String; |
duke@435 | 1271 | idx1 = string_index_at(idx); |
duke@435 | 1272 | Bytes::put_Java_u2((address) (bytes+1), idx1); |
duke@435 | 1273 | DBG(printf("JVM_CONSTANT_StringIndex: %hd", idx1)); |
duke@435 | 1274 | break; |
duke@435 | 1275 | } |
duke@435 | 1276 | } |
duke@435 | 1277 | DBG(printf("\n")); |
duke@435 | 1278 | bytes += ent_size; |
duke@435 | 1279 | size += ent_size; |
duke@435 | 1280 | } |
duke@435 | 1281 | assert(size == cpool_size, "Size mismatch"); |
duke@435 | 1282 | |
duke@435 | 1283 | // Keep temorarily for debugging until it's stable. |
duke@435 | 1284 | DBG(print_cpool_bytes(cnt, start_bytes)); |
duke@435 | 1285 | return (int)(bytes - start_bytes); |
duke@435 | 1286 | } /* end copy_cpool_bytes */ |
duke@435 | 1287 | |
duke@435 | 1288 | |
duke@435 | 1289 | void SymbolHashMap::add_entry(symbolOop sym, u2 value) { |
duke@435 | 1290 | char *str = sym->as_utf8(); |
duke@435 | 1291 | unsigned int hash = compute_hash(str, sym->utf8_length()); |
duke@435 | 1292 | unsigned int index = hash % table_size(); |
duke@435 | 1293 | |
duke@435 | 1294 | // check if already in map |
duke@435 | 1295 | // we prefer the first entry since it is more likely to be what was used in |
duke@435 | 1296 | // the class file |
duke@435 | 1297 | for (SymbolHashMapEntry *en = bucket(index); en != NULL; en = en->next()) { |
duke@435 | 1298 | assert(en->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); |
duke@435 | 1299 | if (en->hash() == hash && en->symbol() == sym) { |
duke@435 | 1300 | return; // already there |
duke@435 | 1301 | } |
duke@435 | 1302 | } |
duke@435 | 1303 | |
duke@435 | 1304 | SymbolHashMapEntry* entry = new SymbolHashMapEntry(hash, sym, value); |
duke@435 | 1305 | entry->set_next(bucket(index)); |
duke@435 | 1306 | _buckets[index].set_entry(entry); |
duke@435 | 1307 | assert(entry->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); |
duke@435 | 1308 | } |
duke@435 | 1309 | |
duke@435 | 1310 | SymbolHashMapEntry* SymbolHashMap::find_entry(symbolOop sym) { |
duke@435 | 1311 | assert(sym != NULL, "SymbolHashMap::find_entry - symbol is NULL"); |
duke@435 | 1312 | char *str = sym->as_utf8(); |
duke@435 | 1313 | int len = sym->utf8_length(); |
duke@435 | 1314 | unsigned int hash = SymbolHashMap::compute_hash(str, len); |
duke@435 | 1315 | unsigned int index = hash % table_size(); |
duke@435 | 1316 | for (SymbolHashMapEntry *en = bucket(index); en != NULL; en = en->next()) { |
duke@435 | 1317 | assert(en->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); |
duke@435 | 1318 | if (en->hash() == hash && en->symbol() == sym) { |
duke@435 | 1319 | return en; |
duke@435 | 1320 | } |
duke@435 | 1321 | } |
duke@435 | 1322 | return NULL; |
duke@435 | 1323 | } |