Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolOop.cpp @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 30 Oct 2010 13:08:23 -0700 |
| parents | d1896d1dda3e |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1579 | 2 * Copyright (c) 1997, 2010, 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 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_constantPoolOop.cpp.incl" | |
| 27 | |
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28 void constantPoolOopDesc::set_flag_at(FlagBit fb) { |
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29 const int MAX_STATE_CHANGES = 2; |
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30 for (int i = MAX_STATE_CHANGES + 10; i > 0; i--) { |
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31 int oflags = _flags; |
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32 int nflags = oflags | (1 << (int)fb); |
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33 if (Atomic::cmpxchg(nflags, &_flags, oflags) == oflags) |
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34 return; |
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35 } |
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36 assert(false, "failed to cmpxchg flags"); |
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37 _flags |= (1 << (int)fb); // better than nothing |
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38 } |
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39 |
| 0 | 40 klassOop constantPoolOopDesc::klass_at_impl(constantPoolHandle this_oop, int which, TRAPS) { |
| 41 // A resolved constantPool entry will contain a klassOop, otherwise a symbolOop. | |
| 42 // It is not safe to rely on the tag bit's here, since we don't have a lock, and the entry and | |
| 43 // tag is not updated atomicly. | |
| 44 oop entry = *(this_oop->obj_at_addr(which)); | |
| 45 if (entry->is_klass()) { | |
| 46 // Already resolved - return entry. | |
| 47 return (klassOop)entry; | |
| 48 } | |
| 49 | |
| 50 // Acquire lock on constant oop while doing update. After we get the lock, we check if another object | |
| 51 // already has updated the object | |
| 52 assert(THREAD->is_Java_thread(), "must be a Java thread"); | |
| 53 bool do_resolve = false; | |
| 54 bool in_error = false; | |
| 55 | |
| 56 symbolHandle name; | |
| 57 Handle loader; | |
| 58 { ObjectLocker ol(this_oop, THREAD); | |
| 59 | |
| 60 if (this_oop->tag_at(which).is_unresolved_klass()) { | |
| 61 if (this_oop->tag_at(which).is_unresolved_klass_in_error()) { | |
| 62 in_error = true; | |
| 63 } else { | |
| 64 do_resolve = true; | |
| 65 name = symbolHandle(THREAD, this_oop->unresolved_klass_at(which)); | |
| 66 loader = Handle(THREAD, instanceKlass::cast(this_oop->pool_holder())->class_loader()); | |
| 67 } | |
| 68 } | |
| 69 } // unlocking constantPool | |
| 70 | |
| 71 | |
| 72 // The original attempt to resolve this constant pool entry failed so find the | |
| 73 // original error and throw it again (JVMS 5.4.3). | |
| 74 if (in_error) { | |
| 75 symbolOop error = SystemDictionary::find_resolution_error(this_oop, which); | |
| 76 guarantee(error != (symbolOop)NULL, "tag mismatch with resolution error table"); | |
| 77 ResourceMark rm; | |
| 78 // exception text will be the class name | |
| 79 const char* className = this_oop->unresolved_klass_at(which)->as_C_string(); | |
| 80 THROW_MSG_0(error, className); | |
| 81 } | |
| 82 | |
| 83 if (do_resolve) { | |
| 84 // this_oop must be unlocked during resolve_or_fail | |
| 85 oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); | |
| 86 Handle h_prot (THREAD, protection_domain); | |
| 87 klassOop k_oop = SystemDictionary::resolve_or_fail(name, loader, h_prot, true, THREAD); | |
| 88 KlassHandle k; | |
| 89 if (!HAS_PENDING_EXCEPTION) { | |
| 90 k = KlassHandle(THREAD, k_oop); | |
| 91 // Do access check for klasses | |
| 92 verify_constant_pool_resolve(this_oop, k, THREAD); | |
| 93 } | |
| 94 | |
| 95 // Failed to resolve class. We must record the errors so that subsequent attempts | |
| 96 // to resolve this constant pool entry fail with the same error (JVMS 5.4.3). | |
| 97 if (HAS_PENDING_EXCEPTION) { | |
| 98 ResourceMark rm; | |
| 99 symbolHandle error(PENDING_EXCEPTION->klass()->klass_part()->name()); | |
| 100 | |
| 101 bool throw_orig_error = false; | |
| 102 { | |
| 103 ObjectLocker ol (this_oop, THREAD); | |
| 104 | |
| 105 // some other thread has beaten us and has resolved the class. | |
| 106 if (this_oop->tag_at(which).is_klass()) { | |
| 107 CLEAR_PENDING_EXCEPTION; | |
| 108 entry = this_oop->resolved_klass_at(which); | |
| 109 return (klassOop)entry; | |
| 110 } | |
| 111 | |
| 112 if (!PENDING_EXCEPTION-> | |
| 1142 | 113 is_a(SystemDictionary::LinkageError_klass())) { |
| 0 | 114 // Just throw the exception and don't prevent these classes from |
| 115 // being loaded due to virtual machine errors like StackOverflow | |
| 116 // and OutOfMemoryError, etc, or if the thread was hit by stop() | |
| 117 // Needs clarification to section 5.4.3 of the VM spec (see 6308271) | |
| 118 } | |
| 119 else if (!this_oop->tag_at(which).is_unresolved_klass_in_error()) { | |
| 120 SystemDictionary::add_resolution_error(this_oop, which, error); | |
| 121 this_oop->tag_at_put(which, JVM_CONSTANT_UnresolvedClassInError); | |
| 122 } else { | |
| 123 // some other thread has put the class in error state. | |
| 124 error = symbolHandle(SystemDictionary::find_resolution_error(this_oop, which)); | |
| 125 assert(!error.is_null(), "checking"); | |
| 126 throw_orig_error = true; | |
| 127 } | |
| 128 } // unlocked | |
| 129 | |
| 130 if (throw_orig_error) { | |
| 131 CLEAR_PENDING_EXCEPTION; | |
| 132 ResourceMark rm; | |
| 133 const char* className = this_oop->unresolved_klass_at(which)->as_C_string(); | |
| 134 THROW_MSG_0(error, className); | |
| 135 } | |
| 136 | |
| 137 return 0; | |
| 138 } | |
| 139 | |
| 140 if (TraceClassResolution && !k()->klass_part()->oop_is_array()) { | |
| 141 // skip resolving the constant pool so that this code get's | |
| 142 // called the next time some bytecodes refer to this class. | |
| 143 ResourceMark rm; | |
| 144 int line_number = -1; | |
| 145 const char * source_file = NULL; | |
| 146 if (JavaThread::current()->has_last_Java_frame()) { | |
| 147 // try to identify the method which called this function. | |
| 148 vframeStream vfst(JavaThread::current()); | |
| 149 if (!vfst.at_end()) { | |
| 150 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
| 151 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); | |
| 152 if (s != NULL) { | |
| 153 source_file = s->as_C_string(); | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 if (k() != this_oop->pool_holder()) { | |
| 158 // only print something if the classes are different | |
| 159 if (source_file != NULL) { | |
| 160 tty->print("RESOLVE %s %s %s:%d\n", | |
| 161 instanceKlass::cast(this_oop->pool_holder())->external_name(), | |
| 162 instanceKlass::cast(k())->external_name(), source_file, line_number); | |
| 163 } else { | |
| 164 tty->print("RESOLVE %s %s\n", | |
| 165 instanceKlass::cast(this_oop->pool_holder())->external_name(), | |
| 166 instanceKlass::cast(k())->external_name()); | |
| 167 } | |
| 168 } | |
| 169 return k(); | |
| 170 } else { | |
| 171 ObjectLocker ol (this_oop, THREAD); | |
| 172 // Only updated constant pool - if it is resolved. | |
| 173 do_resolve = this_oop->tag_at(which).is_unresolved_klass(); | |
| 174 if (do_resolve) { | |
| 175 this_oop->klass_at_put(which, k()); | |
| 176 } | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 entry = this_oop->resolved_klass_at(which); | |
| 181 assert(entry->is_klass(), "must be resolved at this point"); | |
| 182 return (klassOop)entry; | |
| 183 } | |
| 184 | |
| 185 | |
| 186 // Does not update constantPoolOop - to avoid any exception throwing. Used | |
| 187 // by compiler and exception handling. Also used to avoid classloads for | |
| 188 // instanceof operations. Returns NULL if the class has not been loaded or | |
| 189 // if the verification of constant pool failed | |
| 190 klassOop constantPoolOopDesc::klass_at_if_loaded(constantPoolHandle this_oop, int which) { | |
| 191 oop entry = *this_oop->obj_at_addr(which); | |
| 192 if (entry->is_klass()) { | |
| 193 return (klassOop)entry; | |
| 194 } else { | |
| 195 assert(entry->is_symbol(), "must be either symbol or klass"); | |
| 196 Thread *thread = Thread::current(); | |
| 197 symbolHandle name (thread, (symbolOop)entry); | |
| 198 oop loader = instanceKlass::cast(this_oop->pool_holder())->class_loader(); | |
| 199 oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); | |
| 200 Handle h_prot (thread, protection_domain); | |
| 201 Handle h_loader (thread, loader); | |
| 202 klassOop k = SystemDictionary::find(name, h_loader, h_prot, thread); | |
| 203 | |
| 204 if (k != NULL) { | |
| 205 // Make sure that resolving is legal | |
| 206 EXCEPTION_MARK; | |
| 207 KlassHandle klass(THREAD, k); | |
| 208 // return NULL if verification fails | |
| 209 verify_constant_pool_resolve(this_oop, klass, THREAD); | |
| 210 if (HAS_PENDING_EXCEPTION) { | |
| 211 CLEAR_PENDING_EXCEPTION; | |
| 212 return NULL; | |
| 213 } | |
| 214 return klass(); | |
| 215 } else { | |
| 216 return k; | |
| 217 } | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 | |
| 222 klassOop constantPoolOopDesc::klass_ref_at_if_loaded(constantPoolHandle this_oop, int which) { | |
| 223 return klass_at_if_loaded(this_oop, this_oop->klass_ref_index_at(which)); | |
| 224 } | |
| 225 | |
| 226 | |
| 227 // This is an interface for the compiler that allows accessing non-resolved entries | |
| 228 // in the constant pool - but still performs the validations tests. Must be used | |
| 229 // in a pre-parse of the compiler - to determine what it can do and not do. | |
| 230 // Note: We cannot update the ConstantPool from the vm_thread. | |
| 231 klassOop constantPoolOopDesc::klass_ref_at_if_loaded_check(constantPoolHandle this_oop, int index, TRAPS) { | |
| 232 int which = this_oop->klass_ref_index_at(index); | |
| 233 oop entry = *this_oop->obj_at_addr(which); | |
| 234 if (entry->is_klass()) { | |
| 235 return (klassOop)entry; | |
| 236 } else { | |
| 237 assert(entry->is_symbol(), "must be either symbol or klass"); | |
| 238 symbolHandle name (THREAD, (symbolOop)entry); | |
| 239 oop loader = instanceKlass::cast(this_oop->pool_holder())->class_loader(); | |
| 240 oop protection_domain = Klass::cast(this_oop->pool_holder())->protection_domain(); | |
| 241 Handle h_loader(THREAD, loader); | |
| 242 Handle h_prot (THREAD, protection_domain); | |
| 243 KlassHandle k(THREAD, SystemDictionary::find(name, h_loader, h_prot, THREAD)); | |
| 244 | |
| 245 // Do access check for klasses | |
| 246 if( k.not_null() ) verify_constant_pool_resolve(this_oop, k, CHECK_NULL); | |
| 247 return k(); | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 | |
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252 symbolOop constantPoolOopDesc::impl_name_ref_at(int which, bool uncached) { |
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253 int name_index = name_ref_index_at(impl_name_and_type_ref_index_at(which, uncached)); |
| 0 | 254 return symbol_at(name_index); |
| 255 } | |
| 256 | |
| 257 | |
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258 symbolOop constantPoolOopDesc::impl_signature_ref_at(int which, bool uncached) { |
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259 int signature_index = signature_ref_index_at(impl_name_and_type_ref_index_at(which, uncached)); |
| 0 | 260 return symbol_at(signature_index); |
| 261 } | |
| 262 | |
| 263 | |
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264 int constantPoolOopDesc::impl_name_and_type_ref_index_at(int which, bool uncached) { |
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265 int i = which; |
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266 if (!uncached && cache() != NULL) { |
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267 if (constantPoolCacheOopDesc::is_secondary_index(which)) { |
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268 // Invokedynamic index. |
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269 int pool_index = cache()->main_entry_at(which)->constant_pool_index(); |
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270 if (!AllowTransitionalJSR292 || tag_at(pool_index).is_invoke_dynamic()) |
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271 pool_index = invoke_dynamic_name_and_type_ref_index_at(pool_index); |
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272 assert(tag_at(pool_index).is_name_and_type(), ""); |
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273 return pool_index; |
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274 } |
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275 // change byte-ordering and go via cache |
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276 i = remap_instruction_operand_from_cache(which); |
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277 } else { |
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278 if (AllowTransitionalJSR292 && tag_at(which).is_name_and_type()) |
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279 // invokedynamic index is a simple name-and-type |
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280 return which; |
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281 if (tag_at(which).is_invoke_dynamic()) { |
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282 int pool_index = invoke_dynamic_name_and_type_ref_index_at(which); |
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283 assert(tag_at(pool_index).is_name_and_type(), ""); |
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284 return pool_index; |
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285 } |
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286 } |
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287 assert(tag_at(i).is_field_or_method(), "Corrupted constant pool"); |
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288 assert(!tag_at(i).is_invoke_dynamic(), "Must be handled above"); |
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289 jint ref_index = *int_at_addr(i); |
| 0 | 290 return extract_high_short_from_int(ref_index); |
| 291 } | |
| 292 | |
| 293 | |
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294 int constantPoolOopDesc::impl_klass_ref_index_at(int which, bool uncached) { |
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295 guarantee(!constantPoolCacheOopDesc::is_secondary_index(which), |
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296 "an invokedynamic instruction does not have a klass"); |
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297 int i = which; |
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298 if (!uncached && cache() != NULL) { |
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299 // change byte-ordering and go via cache |
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300 i = remap_instruction_operand_from_cache(which); |
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301 } |
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302 assert(tag_at(i).is_field_or_method(), "Corrupted constant pool"); |
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303 jint ref_index = *int_at_addr(i); |
| 0 | 304 return extract_low_short_from_int(ref_index); |
| 305 } | |
| 306 | |
| 307 | |
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308 |
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309 int constantPoolOopDesc::remap_instruction_operand_from_cache(int operand) { |
| 1565 | 310 int cpc_index = operand; |
| 311 DEBUG_ONLY(cpc_index -= CPCACHE_INDEX_TAG); | |
| 312 assert((int)(u2)cpc_index == cpc_index, "clean u2"); | |
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313 int member_index = cache()->entry_at(cpc_index)->constant_pool_index(); |
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314 return member_index; |
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315 } |
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316 |
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317 |
| 0 | 318 void constantPoolOopDesc::verify_constant_pool_resolve(constantPoolHandle this_oop, KlassHandle k, TRAPS) { |
| 319 if (k->oop_is_instance() || k->oop_is_objArray()) { | |
| 320 instanceKlassHandle holder (THREAD, this_oop->pool_holder()); | |
| 321 klassOop elem_oop = k->oop_is_instance() ? k() : objArrayKlass::cast(k())->bottom_klass(); | |
| 322 KlassHandle element (THREAD, elem_oop); | |
| 323 | |
| 324 // The element type could be a typeArray - we only need the access check if it is | |
| 325 // an reference to another class | |
| 326 if (element->oop_is_instance()) { | |
| 327 LinkResolver::check_klass_accessability(holder, element, CHECK); | |
| 328 } | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 | |
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333 int constantPoolOopDesc::name_ref_index_at(int which_nt) { |
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334 jint ref_index = name_and_type_at(which_nt); |
| 0 | 335 return extract_low_short_from_int(ref_index); |
| 336 } | |
| 337 | |
| 338 | |
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339 int constantPoolOopDesc::signature_ref_index_at(int which_nt) { |
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340 jint ref_index = name_and_type_at(which_nt); |
| 0 | 341 return extract_high_short_from_int(ref_index); |
| 342 } | |
| 343 | |
| 344 | |
| 345 klassOop constantPoolOopDesc::klass_ref_at(int which, TRAPS) { | |
| 346 return klass_at(klass_ref_index_at(which), CHECK_NULL); | |
| 347 } | |
| 348 | |
| 349 | |
| 350 symbolOop constantPoolOopDesc::klass_name_at(int which) { | |
| 351 assert(tag_at(which).is_unresolved_klass() || tag_at(which).is_klass(), | |
| 352 "Corrupted constant pool"); | |
| 353 // A resolved constantPool entry will contain a klassOop, otherwise a symbolOop. | |
| 354 // It is not safe to rely on the tag bit's here, since we don't have a lock, and the entry and | |
| 355 // tag is not updated atomicly. | |
| 356 oop entry = *(obj_at_addr(which)); | |
| 357 if (entry->is_klass()) { | |
| 358 // Already resolved - return entry's name. | |
| 359 return klassOop(entry)->klass_part()->name(); | |
| 360 } else { | |
| 361 assert(entry->is_symbol(), "must be either symbol or klass"); | |
| 362 return (symbolOop)entry; | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 symbolOop constantPoolOopDesc::klass_ref_at_noresolve(int which) { | |
| 367 jint ref_index = klass_ref_index_at(which); | |
| 368 return klass_at_noresolve(ref_index); | |
| 369 } | |
| 370 | |
| 1602 | 371 symbolOop constantPoolOopDesc::uncached_klass_ref_at_noresolve(int which) { |
| 372 jint ref_index = uncached_klass_ref_index_at(which); | |
| 373 return klass_at_noresolve(ref_index); | |
| 374 } | |
| 375 | |
| 0 | 376 char* constantPoolOopDesc::string_at_noresolve(int which) { |
| 377 // Test entry type in case string is resolved while in here. | |
| 378 oop entry = *(obj_at_addr(which)); | |
| 379 if (entry->is_symbol()) { | |
| 380 return ((symbolOop)entry)->as_C_string(); | |
|
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381 } else if (java_lang_String::is_instance(entry)) { |
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382 return java_lang_String::as_utf8_string(entry); |
| 0 | 383 } else { |
|
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384 return (char*)"<pseudo-string>"; |
| 0 | 385 } |
| 386 } | |
| 387 | |
| 388 | |
| 389 BasicType constantPoolOopDesc::basic_type_for_signature_at(int which) { | |
| 390 return FieldType::basic_type(symbol_at(which)); | |
| 391 } | |
| 392 | |
| 393 | |
| 394 void constantPoolOopDesc::resolve_string_constants_impl(constantPoolHandle this_oop, TRAPS) { | |
| 395 for (int index = 1; index < this_oop->length(); index++) { // Index 0 is unused | |
| 396 if (this_oop->tag_at(index).is_unresolved_string()) { | |
| 397 this_oop->string_at(index, CHECK); | |
| 398 } | |
| 399 } | |
| 400 } | |
| 401 | |
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402 // A resolved constant value in the CP cache is represented as a non-null |
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403 // value. As a special case, this value can be a 'systemObjArray' |
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404 // which masks an exception object to throw. |
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405 // This allows a MethodHandle constant reference to throw a consistent |
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406 // exception every time, if it fails to resolve. |
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407 static oop decode_exception_from_f1(oop result_oop, TRAPS) { |
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408 if (result_oop->klass() != Universe::systemObjArrayKlassObj()) |
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409 return result_oop; |
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410 |
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411 // Special cases here: Masked null, saved exception. |
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412 objArrayOop sys_array = (objArrayOop) result_oop; |
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413 assert(sys_array->length() == 1, "bad system array"); |
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414 if (sys_array->length() == 1) { |
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415 THROW_OOP_(sys_array->obj_at(0), NULL); |
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416 } |
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417 return NULL; |
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418 } |
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419 |
| 1602 | 420 oop constantPoolOopDesc::resolve_constant_at_impl(constantPoolHandle this_oop, int index, int cache_index, TRAPS) { |
| 421 oop result_oop = NULL; | |
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422 Handle throw_exception; |
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423 |
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424 if (cache_index == _possible_index_sentinel) { |
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425 // It is possible that this constant is one which is cached in the CP cache. |
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426 // We'll do a linear search. This should be OK because this usage is rare. |
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427 assert(index > 0, "valid index"); |
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428 constantPoolCacheOop cache = this_oop()->cache(); |
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429 for (int i = 0, len = cache->length(); i < len; i++) { |
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430 ConstantPoolCacheEntry* cpc_entry = cache->entry_at(i); |
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431 if (!cpc_entry->is_secondary_entry() && cpc_entry->constant_pool_index() == index) { |
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432 // Switch the query to use this CPC entry. |
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433 cache_index = i; |
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434 index = _no_index_sentinel; |
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435 break; |
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436 } |
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437 } |
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438 if (cache_index == _possible_index_sentinel) |
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439 cache_index = _no_index_sentinel; // not found |
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440 } |
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441 assert(cache_index == _no_index_sentinel || cache_index >= 0, ""); |
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442 assert(index == _no_index_sentinel || index >= 0, ""); |
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443 |
| 1602 | 444 if (cache_index >= 0) { |
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445 assert(index == _no_index_sentinel, "only one kind of index at a time"); |
| 1602 | 446 ConstantPoolCacheEntry* cpc_entry = this_oop->cache()->entry_at(cache_index); |
| 447 result_oop = cpc_entry->f1(); | |
| 448 if (result_oop != NULL) { | |
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449 return decode_exception_from_f1(result_oop, THREAD); |
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450 // That was easy... |
| 1602 | 451 } |
| 452 index = cpc_entry->constant_pool_index(); | |
| 453 } | |
| 454 | |
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455 jvalue prim_value; // temp used only in a few cases below |
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456 |
| 1602 | 457 int tag_value = this_oop->tag_at(index).value(); |
| 458 switch (tag_value) { | |
| 459 | |
| 460 case JVM_CONSTANT_UnresolvedClass: | |
| 461 case JVM_CONSTANT_UnresolvedClassInError: | |
| 462 case JVM_CONSTANT_Class: | |
| 463 { | |
| 464 klassOop resolved = klass_at_impl(this_oop, index, CHECK_NULL); | |
| 465 // ldc wants the java mirror. | |
| 466 result_oop = resolved->klass_part()->java_mirror(); | |
| 467 break; | |
| 468 } | |
| 469 | |
| 470 case JVM_CONSTANT_String: | |
| 471 case JVM_CONSTANT_UnresolvedString: | |
| 472 if (this_oop->is_pseudo_string_at(index)) { | |
| 473 result_oop = this_oop->pseudo_string_at(index); | |
| 474 break; | |
| 475 } | |
| 476 result_oop = string_at_impl(this_oop, index, CHECK_NULL); | |
| 477 break; | |
| 478 | |
| 479 case JVM_CONSTANT_Object: | |
| 480 result_oop = this_oop->object_at(index); | |
| 481 break; | |
| 482 | |
| 483 case JVM_CONSTANT_MethodHandle: | |
| 484 { | |
| 485 int ref_kind = this_oop->method_handle_ref_kind_at(index); | |
| 486 int callee_index = this_oop->method_handle_klass_index_at(index); | |
| 487 symbolHandle name(THREAD, this_oop->method_handle_name_ref_at(index)); | |
| 488 symbolHandle signature(THREAD, this_oop->method_handle_signature_ref_at(index)); | |
| 489 if (PrintMiscellaneous) | |
| 490 tty->print_cr("resolve JVM_CONSTANT_MethodHandle:%d [%d/%d/%d] %s.%s", | |
| 491 ref_kind, index, this_oop->method_handle_index_at(index), | |
| 492 callee_index, name->as_C_string(), signature->as_C_string()); | |
| 493 KlassHandle callee; | |
| 494 { klassOop k = klass_at_impl(this_oop, callee_index, CHECK_NULL); | |
| 495 callee = KlassHandle(THREAD, k); | |
| 496 } | |
| 497 KlassHandle klass(THREAD, this_oop->pool_holder()); | |
| 498 Handle value = SystemDictionary::link_method_handle_constant(klass, ref_kind, | |
| 499 callee, name, signature, | |
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500 THREAD); |
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501 if (HAS_PENDING_EXCEPTION) { |
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502 throw_exception = Handle(THREAD, PENDING_EXCEPTION); |
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503 CLEAR_PENDING_EXCEPTION; |
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504 break; |
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505 } |
| 1602 | 506 result_oop = value(); |
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507 assert(result_oop != NULL, ""); |
| 1602 | 508 break; |
| 509 } | |
| 510 | |
| 511 case JVM_CONSTANT_MethodType: | |
| 512 { | |
| 513 symbolHandle signature(THREAD, this_oop->method_type_signature_at(index)); | |
| 514 if (PrintMiscellaneous) | |
| 515 tty->print_cr("resolve JVM_CONSTANT_MethodType [%d/%d] %s", | |
| 516 index, this_oop->method_type_index_at(index), | |
| 517 signature->as_C_string()); | |
| 518 KlassHandle klass(THREAD, this_oop->pool_holder()); | |
| 519 bool ignore_is_on_bcp = false; | |
| 520 Handle value = SystemDictionary::find_method_handle_type(signature, | |
| 521 klass, | |
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522 false, |
| 1602 | 523 ignore_is_on_bcp, |
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524 THREAD); |
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525 if (HAS_PENDING_EXCEPTION) { |
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526 throw_exception = Handle(THREAD, PENDING_EXCEPTION); |
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527 CLEAR_PENDING_EXCEPTION; |
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528 break; |
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529 } |
| 1602 | 530 result_oop = value(); |
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531 assert(result_oop != NULL, ""); |
| 1602 | 532 break; |
| 533 } | |
| 534 | |
| 535 case JVM_CONSTANT_Integer: | |
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536 prim_value.i = this_oop->int_at(index); |
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537 result_oop = java_lang_boxing_object::create(T_INT, &prim_value, CHECK_NULL); |
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538 break; |
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539 |
| 1602 | 540 case JVM_CONSTANT_Float: |
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541 prim_value.f = this_oop->float_at(index); |
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542 result_oop = java_lang_boxing_object::create(T_FLOAT, &prim_value, CHECK_NULL); |
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543 break; |
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544 |
| 1602 | 545 case JVM_CONSTANT_Long: |
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546 prim_value.j = this_oop->long_at(index); |
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547 result_oop = java_lang_boxing_object::create(T_LONG, &prim_value, CHECK_NULL); |
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548 break; |
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549 |
| 1602 | 550 case JVM_CONSTANT_Double: |
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551 prim_value.d = this_oop->double_at(index); |
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552 result_oop = java_lang_boxing_object::create(T_DOUBLE, &prim_value, CHECK_NULL); |
| 1602 | 553 break; |
| 554 | |
| 555 default: | |
| 556 DEBUG_ONLY( tty->print_cr("*** %p: tag at CP[%d/%d] = %d", | |
| 557 this_oop(), index, cache_index, tag_value) ); | |
| 558 assert(false, "unexpected constant tag"); | |
| 559 break; | |
| 560 } | |
| 561 | |
| 562 if (cache_index >= 0) { | |
| 563 // Cache the oop here also. | |
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564 if (throw_exception.not_null()) { |
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565 objArrayOop sys_array = oopFactory::new_system_objArray(1, CHECK_NULL); |
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566 sys_array->obj_at_put(0, throw_exception()); |
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567 result_oop = sys_array; |
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568 throw_exception = Handle(); // be tidy |
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569 } |
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570 Handle result_handle(THREAD, result_oop); |
| 1602 | 571 result_oop = NULL; // safety |
| 572 ObjectLocker ol(this_oop, THREAD); | |
| 573 ConstantPoolCacheEntry* cpc_entry = this_oop->cache()->entry_at(cache_index); | |
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574 result_oop = cpc_entry->f1(); |
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575 // Benign race condition: f1 may already be filled in while we were trying to lock. |
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576 // The important thing here is that all threads pick up the same result. |
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577 // It doesn't matter which racing thread wins, as long as only one |
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578 // result is used by all threads, and all future queries. |
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579 // That result may be either a resolved constant or a failure exception. |
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580 if (result_oop == NULL) { |
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581 result_oop = result_handle(); |
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582 cpc_entry->set_f1(result_oop); |
| 1602 | 583 } |
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584 return decode_exception_from_f1(result_oop, THREAD); |
| 1602 | 585 } else { |
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586 if (throw_exception.not_null()) { |
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587 THROW_HANDLE_(throw_exception, NULL); |
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588 } |
| 1602 | 589 return result_oop; |
| 590 } | |
| 591 } | |
| 592 | |
| 0 | 593 oop constantPoolOopDesc::string_at_impl(constantPoolHandle this_oop, int which, TRAPS) { |
| 594 oop entry = *(this_oop->obj_at_addr(which)); | |
| 595 if (entry->is_symbol()) { | |
| 596 ObjectLocker ol(this_oop, THREAD); | |
| 597 if (this_oop->tag_at(which).is_unresolved_string()) { | |
| 598 // Intern string | |
| 599 symbolOop sym = this_oop->unresolved_string_at(which); | |
| 600 entry = StringTable::intern(sym, CHECK_(constantPoolOop(NULL))); | |
| 601 this_oop->string_at_put(which, entry); | |
| 602 } else { | |
| 603 // Another thread beat us and interned string, read string from constant pool | |
| 604 entry = this_oop->resolved_string_at(which); | |
| 605 } | |
| 606 } | |
| 607 assert(java_lang_String::is_instance(entry), "must be string"); | |
| 608 return entry; | |
| 609 } | |
| 610 | |
| 611 | |
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612 bool constantPoolOopDesc::is_pseudo_string_at(int which) { |
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613 oop entry = *(obj_at_addr(which)); |
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614 if (entry->is_symbol()) |
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615 // Not yet resolved, but it will resolve to a string. |
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616 return false; |
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617 else if (java_lang_String::is_instance(entry)) |
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618 return false; // actually, it might be a non-interned or non-perm string |
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619 else |
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620 // truly pseudo |
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621 return true; |
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622 } |
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623 |
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624 |
| 0 | 625 bool constantPoolOopDesc::klass_name_at_matches(instanceKlassHandle k, |
| 626 int which) { | |
| 627 // Names are interned, so we can compare symbolOops directly | |
| 628 symbolOop cp_name = klass_name_at(which); | |
| 629 return (cp_name == k->name()); | |
| 630 } | |
| 631 | |
| 632 | |
| 633 int constantPoolOopDesc::pre_resolve_shared_klasses(TRAPS) { | |
| 634 ResourceMark rm; | |
| 635 int count = 0; | |
| 636 for (int index = 1; index < tags()->length(); index++) { // Index 0 is unused | |
| 637 if (tag_at(index).is_unresolved_string()) { | |
| 638 // Intern string | |
| 639 symbolOop sym = unresolved_string_at(index); | |
| 640 oop entry = StringTable::intern(sym, CHECK_(-1)); | |
| 641 string_at_put(index, entry); | |
| 642 } | |
| 643 } | |
| 644 return count; | |
| 645 } | |
| 646 | |
| 647 | |
| 648 // Iterate over symbols which are used as class, field, method names and | |
| 649 // signatures (in preparation for writing to the shared archive). | |
| 650 | |
| 651 void constantPoolOopDesc::shared_symbols_iterate(OopClosure* closure) { | |
| 652 for (int index = 1; index < length(); index++) { // Index 0 is unused | |
| 653 switch (tag_at(index).value()) { | |
| 654 | |
| 655 case JVM_CONSTANT_UnresolvedClass: | |
| 656 closure->do_oop(obj_at_addr(index)); | |
| 657 break; | |
| 658 | |
| 659 case JVM_CONSTANT_NameAndType: | |
| 660 { | |
| 661 int i = *int_at_addr(index); | |
| 662 closure->do_oop(obj_at_addr((unsigned)i >> 16)); | |
| 663 closure->do_oop(obj_at_addr((unsigned)i & 0xffff)); | |
| 664 } | |
| 665 break; | |
| 666 | |
| 667 case JVM_CONSTANT_Class: | |
| 668 case JVM_CONSTANT_InterfaceMethodref: | |
| 669 case JVM_CONSTANT_Fieldref: | |
| 670 case JVM_CONSTANT_Methodref: | |
| 671 case JVM_CONSTANT_Integer: | |
| 672 case JVM_CONSTANT_Float: | |
| 673 // Do nothing! Not an oop. | |
| 674 // These constant types do not reference symbols at this point. | |
| 675 break; | |
| 676 | |
| 677 case JVM_CONSTANT_String: | |
| 678 // Do nothing! Not a symbol. | |
| 679 break; | |
| 680 | |
| 681 case JVM_CONSTANT_UnresolvedString: | |
| 682 case JVM_CONSTANT_Utf8: | |
| 683 // These constants are symbols, but unless these symbols are | |
| 684 // actually to be used for something, we don't want to mark them. | |
| 685 break; | |
| 686 | |
| 687 case JVM_CONSTANT_Long: | |
| 688 case JVM_CONSTANT_Double: | |
| 689 // Do nothing! Not an oop. (But takes two pool entries.) | |
| 690 ++index; | |
| 691 break; | |
| 692 | |
| 693 default: | |
| 694 ShouldNotReachHere(); | |
| 695 break; | |
| 696 } | |
| 697 } | |
| 698 } | |
| 699 | |
| 700 | |
| 701 // Iterate over the [one] tags array (in preparation for writing to the | |
| 702 // shared archive). | |
| 703 | |
| 704 void constantPoolOopDesc::shared_tags_iterate(OopClosure* closure) { | |
| 705 closure->do_oop(tags_addr()); | |
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706 closure->do_oop(operands_addr()); |
| 0 | 707 } |
| 708 | |
| 709 | |
| 710 // Iterate over String objects (in preparation for writing to the shared | |
| 711 // archive). | |
| 712 | |
| 713 void constantPoolOopDesc::shared_strings_iterate(OopClosure* closure) { | |
| 714 for (int index = 1; index < length(); index++) { // Index 0 is unused | |
| 715 switch (tag_at(index).value()) { | |
| 716 | |
| 717 case JVM_CONSTANT_UnresolvedClass: | |
| 718 case JVM_CONSTANT_NameAndType: | |
| 719 // Do nothing! Not a String. | |
| 720 break; | |
| 721 | |
| 722 case JVM_CONSTANT_Class: | |
| 723 case JVM_CONSTANT_InterfaceMethodref: | |
| 724 case JVM_CONSTANT_Fieldref: | |
| 725 case JVM_CONSTANT_Methodref: | |
| 726 case JVM_CONSTANT_Integer: | |
| 727 case JVM_CONSTANT_Float: | |
| 728 // Do nothing! Not an oop. | |
| 729 // These constant types do not reference symbols at this point. | |
| 730 break; | |
| 731 | |
| 732 case JVM_CONSTANT_String: | |
| 733 closure->do_oop(obj_at_addr(index)); | |
| 734 break; | |
| 735 | |
| 736 case JVM_CONSTANT_UnresolvedString: | |
| 737 case JVM_CONSTANT_Utf8: | |
| 738 // These constants are symbols, but unless these symbols are | |
| 739 // actually to be used for something, we don't want to mark them. | |
| 740 break; | |
| 741 | |
| 742 case JVM_CONSTANT_Long: | |
| 743 case JVM_CONSTANT_Double: | |
| 744 // Do nothing! Not an oop. (But takes two pool entries.) | |
| 745 ++index; | |
| 746 break; | |
| 747 | |
| 748 default: | |
| 749 ShouldNotReachHere(); | |
| 750 break; | |
| 751 } | |
| 752 } | |
| 753 } | |
| 754 | |
| 755 | |
| 756 // Compare this constant pool's entry at index1 to the constant pool | |
| 757 // cp2's entry at index2. | |
| 758 bool constantPoolOopDesc::compare_entry_to(int index1, constantPoolHandle cp2, | |
| 759 int index2, TRAPS) { | |
| 760 | |
| 761 jbyte t1 = tag_at(index1).value(); | |
| 762 jbyte t2 = cp2->tag_at(index2).value(); | |
| 763 | |
| 764 | |
| 765 // JVM_CONSTANT_UnresolvedClassInError is equal to JVM_CONSTANT_UnresolvedClass | |
| 766 // when comparing | |
| 767 if (t1 == JVM_CONSTANT_UnresolvedClassInError) { | |
| 768 t1 = JVM_CONSTANT_UnresolvedClass; | |
| 769 } | |
| 770 if (t2 == JVM_CONSTANT_UnresolvedClassInError) { | |
| 771 t2 = JVM_CONSTANT_UnresolvedClass; | |
| 772 } | |
| 773 | |
| 774 if (t1 != t2) { | |
| 775 // Not the same entry type so there is nothing else to check. Note | |
| 776 // that this style of checking will consider resolved/unresolved | |
| 777 // class pairs and resolved/unresolved string pairs as different. | |
| 778 // From the constantPoolOop API point of view, this is correct | |
| 779 // behavior. See constantPoolKlass::merge() to see how this plays | |
| 780 // out in the context of constantPoolOop merging. | |
| 781 return false; | |
| 782 } | |
| 783 | |
| 784 switch (t1) { | |
| 785 case JVM_CONSTANT_Class: | |
| 786 { | |
| 787 klassOop k1 = klass_at(index1, CHECK_false); | |
| 788 klassOop k2 = cp2->klass_at(index2, CHECK_false); | |
| 789 if (k1 == k2) { | |
| 790 return true; | |
| 791 } | |
| 792 } break; | |
| 793 | |
| 794 case JVM_CONSTANT_ClassIndex: | |
| 795 { | |
| 796 int recur1 = klass_index_at(index1); | |
| 797 int recur2 = cp2->klass_index_at(index2); | |
| 798 bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 799 if (match) { | |
| 800 return true; | |
| 801 } | |
| 802 } break; | |
| 803 | |
| 804 case JVM_CONSTANT_Double: | |
| 805 { | |
| 806 jdouble d1 = double_at(index1); | |
| 807 jdouble d2 = cp2->double_at(index2); | |
| 808 if (d1 == d2) { | |
| 809 return true; | |
| 810 } | |
| 811 } break; | |
| 812 | |
| 813 case JVM_CONSTANT_Fieldref: | |
| 814 case JVM_CONSTANT_InterfaceMethodref: | |
| 815 case JVM_CONSTANT_Methodref: | |
| 816 { | |
| 817 int recur1 = uncached_klass_ref_index_at(index1); | |
| 818 int recur2 = cp2->uncached_klass_ref_index_at(index2); | |
| 819 bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 820 if (match) { | |
| 821 recur1 = uncached_name_and_type_ref_index_at(index1); | |
| 822 recur2 = cp2->uncached_name_and_type_ref_index_at(index2); | |
| 823 match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 824 if (match) { | |
| 825 return true; | |
| 826 } | |
| 827 } | |
| 828 } break; | |
| 829 | |
| 830 case JVM_CONSTANT_Float: | |
| 831 { | |
| 832 jfloat f1 = float_at(index1); | |
| 833 jfloat f2 = cp2->float_at(index2); | |
| 834 if (f1 == f2) { | |
| 835 return true; | |
| 836 } | |
| 837 } break; | |
| 838 | |
| 839 case JVM_CONSTANT_Integer: | |
| 840 { | |
| 841 jint i1 = int_at(index1); | |
| 842 jint i2 = cp2->int_at(index2); | |
| 843 if (i1 == i2) { | |
| 844 return true; | |
| 845 } | |
| 846 } break; | |
| 847 | |
| 848 case JVM_CONSTANT_Long: | |
| 849 { | |
| 850 jlong l1 = long_at(index1); | |
| 851 jlong l2 = cp2->long_at(index2); | |
| 852 if (l1 == l2) { | |
| 853 return true; | |
| 854 } | |
| 855 } break; | |
| 856 | |
| 857 case JVM_CONSTANT_NameAndType: | |
| 858 { | |
| 859 int recur1 = name_ref_index_at(index1); | |
| 860 int recur2 = cp2->name_ref_index_at(index2); | |
| 861 bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 862 if (match) { | |
| 863 recur1 = signature_ref_index_at(index1); | |
| 864 recur2 = cp2->signature_ref_index_at(index2); | |
| 865 match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 866 if (match) { | |
| 867 return true; | |
| 868 } | |
| 869 } | |
| 870 } break; | |
| 871 | |
| 872 case JVM_CONSTANT_String: | |
| 873 { | |
| 874 oop s1 = string_at(index1, CHECK_false); | |
| 875 oop s2 = cp2->string_at(index2, CHECK_false); | |
| 876 if (s1 == s2) { | |
| 877 return true; | |
| 878 } | |
| 879 } break; | |
| 880 | |
| 881 case JVM_CONSTANT_StringIndex: | |
| 882 { | |
| 883 int recur1 = string_index_at(index1); | |
| 884 int recur2 = cp2->string_index_at(index2); | |
| 885 bool match = compare_entry_to(recur1, cp2, recur2, CHECK_false); | |
| 886 if (match) { | |
| 887 return true; | |
| 888 } | |
| 889 } break; | |
| 890 | |
| 891 case JVM_CONSTANT_UnresolvedClass: | |
| 892 { | |
| 893 symbolOop k1 = unresolved_klass_at(index1); | |
| 894 symbolOop k2 = cp2->unresolved_klass_at(index2); | |
| 895 if (k1 == k2) { | |
| 896 return true; | |
| 897 } | |
| 898 } break; | |
| 899 | |
| 1602 | 900 case JVM_CONSTANT_MethodType: |
| 901 { | |
| 902 int k1 = method_type_index_at(index1); | |
| 903 int k2 = cp2->method_type_index_at(index2); | |
| 904 if (k1 == k2) { | |
| 905 return true; | |
| 906 } | |
| 907 } break; | |
| 908 | |
| 909 case JVM_CONSTANT_MethodHandle: | |
| 910 { | |
| 911 int k1 = method_handle_ref_kind_at(index1); | |
| 912 int k2 = cp2->method_handle_ref_kind_at(index2); | |
| 913 if (k1 == k2) { | |
| 914 int i1 = method_handle_index_at(index1); | |
| 915 int i2 = cp2->method_handle_index_at(index2); | |
| 916 if (i1 == i2) { | |
| 917 return true; | |
| 918 } | |
| 919 } | |
| 920 } break; | |
| 921 | |
|
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922 case JVM_CONSTANT_InvokeDynamic: |
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923 { |
|
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924 int op_count = multi_operand_count_at(index1); |
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925 if (op_count == cp2->multi_operand_count_at(index2)) { |
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926 bool all_equal = true; |
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927 for (int op_i = 0; op_i < op_count; op_i++) { |
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928 int k1 = multi_operand_ref_at(index1, op_i); |
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929 int k2 = cp2->multi_operand_ref_at(index2, op_i); |
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930 if (k1 != k2) { |
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931 all_equal = false; |
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932 break; |
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933 } |
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934 } |
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935 if (all_equal) { |
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936 return true; // got through loop; all elements equal |
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937 } |
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938 } |
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939 } break; |
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940 |
| 0 | 941 case JVM_CONSTANT_UnresolvedString: |
| 942 { | |
| 943 symbolOop s1 = unresolved_string_at(index1); | |
| 944 symbolOop s2 = cp2->unresolved_string_at(index2); | |
| 945 if (s1 == s2) { | |
| 946 return true; | |
| 947 } | |
| 948 } break; | |
| 949 | |
| 950 case JVM_CONSTANT_Utf8: | |
| 951 { | |
| 952 symbolOop s1 = symbol_at(index1); | |
| 953 symbolOop s2 = cp2->symbol_at(index2); | |
| 954 if (s1 == s2) { | |
| 955 return true; | |
| 956 } | |
| 957 } break; | |
| 958 | |
| 959 // Invalid is used as the tag for the second constant pool entry | |
| 960 // occupied by JVM_CONSTANT_Double or JVM_CONSTANT_Long. It should | |
| 961 // not be seen by itself. | |
| 962 case JVM_CONSTANT_Invalid: // fall through | |
| 963 | |
| 964 default: | |
| 965 ShouldNotReachHere(); | |
| 966 break; | |
| 967 } | |
| 968 | |
| 969 return false; | |
| 970 } // end compare_entry_to() | |
| 971 | |
| 972 | |
|
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973 // Grow this->operands() to the indicated length, unless it is already at least that long. |
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974 void constantPoolOopDesc::multi_operand_buffer_grow(int min_length, TRAPS) { |
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975 int old_length = multi_operand_buffer_fill_pointer(); |
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976 if (old_length >= min_length) return; |
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977 int new_length = min_length; |
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978 assert(new_length > _multi_operand_buffer_fill_pointer_offset, ""); |
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979 typeArrayHandle new_operands = oopFactory::new_permanent_intArray(new_length, CHECK); |
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980 if (operands() == NULL) { |
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981 new_operands->int_at_put(_multi_operand_buffer_fill_pointer_offset, old_length); |
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982 } else { |
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983 // copy fill pointer and everything else |
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984 for (int i = 0; i < old_length; i++) { |
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985 new_operands->int_at_put(i, operands()->int_at(i)); |
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986 } |
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987 } |
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988 set_operands(new_operands()); |
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989 } |
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990 |
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991 |
| 0 | 992 // Copy this constant pool's entries at start_i to end_i (inclusive) |
| 993 // to the constant pool to_cp's entries starting at to_i. A total of | |
| 994 // (end_i - start_i) + 1 entries are copied. | |
| 995 void constantPoolOopDesc::copy_cp_to(int start_i, int end_i, | |
| 996 constantPoolHandle to_cp, int to_i, TRAPS) { | |
| 997 | |
| 998 int dest_i = to_i; // leave original alone for debug purposes | |
| 999 | |
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1000 if (operands() != NULL) { |
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1001 // pre-grow the target CP's operand buffer |
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1002 int nops = this->multi_operand_buffer_fill_pointer(); |
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1003 nops += to_cp->multi_operand_buffer_fill_pointer(); |
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1004 to_cp->multi_operand_buffer_grow(nops, CHECK); |
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1005 } |
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1006 |
| 0 | 1007 for (int src_i = start_i; src_i <= end_i; /* see loop bottom */ ) { |
| 1008 copy_entry_to(src_i, to_cp, dest_i, CHECK); | |
| 1009 | |
| 1010 switch (tag_at(src_i).value()) { | |
| 1011 case JVM_CONSTANT_Double: | |
| 1012 case JVM_CONSTANT_Long: | |
| 1013 // double and long take two constant pool entries | |
| 1014 src_i += 2; | |
| 1015 dest_i += 2; | |
| 1016 break; | |
| 1017 | |
| 1018 default: | |
| 1019 // all others take one constant pool entry | |
| 1020 src_i++; | |
| 1021 dest_i++; | |
| 1022 break; | |
| 1023 } | |
| 1024 } | |
| 1025 } // end copy_cp_to() | |
| 1026 | |
| 1027 | |
| 1028 // Copy this constant pool's entry at from_i to the constant pool | |
| 1029 // to_cp's entry at to_i. | |
| 1030 void constantPoolOopDesc::copy_entry_to(int from_i, constantPoolHandle to_cp, | |
| 1031 int to_i, TRAPS) { | |
| 1032 | |
| 1033 switch (tag_at(from_i).value()) { | |
| 1034 case JVM_CONSTANT_Class: | |
| 1035 { | |
| 1036 klassOop k = klass_at(from_i, CHECK); | |
| 1037 to_cp->klass_at_put(to_i, k); | |
| 1038 } break; | |
| 1039 | |
| 1040 case JVM_CONSTANT_ClassIndex: | |
| 1041 { | |
| 1042 jint ki = klass_index_at(from_i); | |
| 1043 to_cp->klass_index_at_put(to_i, ki); | |
| 1044 } break; | |
| 1045 | |
| 1046 case JVM_CONSTANT_Double: | |
| 1047 { | |
| 1048 jdouble d = double_at(from_i); | |
| 1049 to_cp->double_at_put(to_i, d); | |
| 1050 // double takes two constant pool entries so init second entry's tag | |
| 1051 to_cp->tag_at_put(to_i + 1, JVM_CONSTANT_Invalid); | |
| 1052 } break; | |
| 1053 | |
| 1054 case JVM_CONSTANT_Fieldref: | |
| 1055 { | |
| 1056 int class_index = uncached_klass_ref_index_at(from_i); | |
| 1057 int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); | |
| 1058 to_cp->field_at_put(to_i, class_index, name_and_type_index); | |
| 1059 } break; | |
| 1060 | |
| 1061 case JVM_CONSTANT_Float: | |
| 1062 { | |
| 1063 jfloat f = float_at(from_i); | |
| 1064 to_cp->float_at_put(to_i, f); | |
| 1065 } break; | |
| 1066 | |
| 1067 case JVM_CONSTANT_Integer: | |
| 1068 { | |
| 1069 jint i = int_at(from_i); | |
| 1070 to_cp->int_at_put(to_i, i); | |
| 1071 } break; | |
| 1072 | |
| 1073 case JVM_CONSTANT_InterfaceMethodref: | |
| 1074 { | |
| 1075 int class_index = uncached_klass_ref_index_at(from_i); | |
| 1076 int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); | |
| 1077 to_cp->interface_method_at_put(to_i, class_index, name_and_type_index); | |
| 1078 } break; | |
| 1079 | |
| 1080 case JVM_CONSTANT_Long: | |
| 1081 { | |
| 1082 jlong l = long_at(from_i); | |
| 1083 to_cp->long_at_put(to_i, l); | |
| 1084 // long takes two constant pool entries so init second entry's tag | |
| 1085 to_cp->tag_at_put(to_i + 1, JVM_CONSTANT_Invalid); | |
| 1086 } break; | |
| 1087 | |
| 1088 case JVM_CONSTANT_Methodref: | |
| 1089 { | |
| 1090 int class_index = uncached_klass_ref_index_at(from_i); | |
| 1091 int name_and_type_index = uncached_name_and_type_ref_index_at(from_i); | |
| 1092 to_cp->method_at_put(to_i, class_index, name_and_type_index); | |
| 1093 } break; | |
| 1094 | |
| 1095 case JVM_CONSTANT_NameAndType: | |
| 1096 { | |
| 1097 int name_ref_index = name_ref_index_at(from_i); | |
| 1098 int signature_ref_index = signature_ref_index_at(from_i); | |
| 1099 to_cp->name_and_type_at_put(to_i, name_ref_index, signature_ref_index); | |
| 1100 } break; | |
| 1101 | |
| 1102 case JVM_CONSTANT_String: | |
| 1103 { | |
| 1104 oop s = string_at(from_i, CHECK); | |
| 1105 to_cp->string_at_put(to_i, s); | |
| 1106 } break; | |
| 1107 | |
| 1108 case JVM_CONSTANT_StringIndex: | |
| 1109 { | |
| 1110 jint si = string_index_at(from_i); | |
| 1111 to_cp->string_index_at_put(to_i, si); | |
| 1112 } break; | |
| 1113 | |
| 1114 case JVM_CONSTANT_UnresolvedClass: | |
| 1115 { | |
| 1116 symbolOop k = unresolved_klass_at(from_i); | |
| 1117 to_cp->unresolved_klass_at_put(to_i, k); | |
| 1118 } break; | |
| 1119 | |
| 1120 case JVM_CONSTANT_UnresolvedClassInError: | |
| 1121 { | |
| 1122 symbolOop k = unresolved_klass_at(from_i); | |
| 1123 to_cp->unresolved_klass_at_put(to_i, k); | |
| 1124 to_cp->tag_at_put(to_i, JVM_CONSTANT_UnresolvedClassInError); | |
| 1125 } break; | |
| 1126 | |
| 1127 | |
| 1128 case JVM_CONSTANT_UnresolvedString: | |
| 1129 { | |
| 1130 symbolOop s = unresolved_string_at(from_i); | |
| 1131 to_cp->unresolved_string_at_put(to_i, s); | |
| 1132 } break; | |
| 1133 | |
| 1134 case JVM_CONSTANT_Utf8: | |
| 1135 { | |
| 1136 symbolOop s = symbol_at(from_i); | |
| 1137 to_cp->symbol_at_put(to_i, s); | |
| 1138 } break; | |
| 1139 | |
| 1602 | 1140 case JVM_CONSTANT_MethodType: |
| 1141 { | |
| 1142 jint k = method_type_index_at(from_i); | |
| 1143 to_cp->method_type_index_at_put(to_i, k); | |
| 1144 } break; | |
| 1145 | |
| 1146 case JVM_CONSTANT_MethodHandle: | |
| 1147 { | |
| 1148 int k1 = method_handle_ref_kind_at(from_i); | |
| 1149 int k2 = method_handle_index_at(from_i); | |
| 1150 to_cp->method_handle_index_at_put(to_i, k1, k2); | |
| 1151 } break; | |
| 1152 | |
|
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1153 case JVM_CONSTANT_InvokeDynamic: |
|
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1154 { |
|
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1155 int op_count = multi_operand_count_at(from_i); |
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1156 int fillp = to_cp->multi_operand_buffer_fill_pointer(); |
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1157 int to_op_base = fillp - _multi_operand_count_offset; // fillp is count offset; get to base |
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1158 to_cp->multi_operand_buffer_grow(to_op_base + op_count, CHECK); |
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1159 to_cp->operands()->int_at_put(fillp++, op_count); |
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1160 assert(fillp == to_op_base + _multi_operand_base_offset, "just wrote count, will now write args"); |
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1161 for (int op_i = 0; op_i < op_count; op_i++) { |
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1162 int op = multi_operand_ref_at(from_i, op_i); |
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1163 to_cp->operands()->int_at_put(fillp++, op); |
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1164 } |
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1165 assert(fillp <= to_cp->operands()->length(), "oob"); |
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1166 to_cp->set_multi_operand_buffer_fill_pointer(fillp); |
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1167 to_cp->invoke_dynamic_at_put(to_i, to_op_base, op_count); |
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1168 #ifdef ASSERT |
|
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1169 int k1 = invoke_dynamic_bootstrap_method_ref_index_at(from_i); |
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1170 int k2 = invoke_dynamic_name_and_type_ref_index_at(from_i); |
|
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1171 int k3 = invoke_dynamic_argument_count_at(from_i); |
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1172 assert(to_cp->check_invoke_dynamic_at(to_i, k1, k2, k3), |
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1173 "indy structure is OK"); |
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1174 #endif //ASSERT |
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1175 } break; |
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1176 |
| 0 | 1177 // Invalid is used as the tag for the second constant pool entry |
| 1178 // occupied by JVM_CONSTANT_Double or JVM_CONSTANT_Long. It should | |
| 1179 // not be seen by itself. | |
| 1180 case JVM_CONSTANT_Invalid: // fall through | |
| 1181 | |
| 1182 default: | |
| 1183 { | |
| 1184 jbyte bad_value = tag_at(from_i).value(); // leave a breadcrumb | |
| 1185 ShouldNotReachHere(); | |
| 1186 } break; | |
| 1187 } | |
| 1188 } // end copy_entry_to() | |
| 1189 | |
| 1190 | |
| 1191 // Search constant pool search_cp for an entry that matches this | |
| 1192 // constant pool's entry at pattern_i. Returns the index of a | |
| 1193 // matching entry or zero (0) if there is no matching entry. | |
| 1194 int constantPoolOopDesc::find_matching_entry(int pattern_i, | |
| 1195 constantPoolHandle search_cp, TRAPS) { | |
| 1196 | |
| 1197 // index zero (0) is not used | |
| 1198 for (int i = 1; i < search_cp->length(); i++) { | |
| 1199 bool found = compare_entry_to(pattern_i, search_cp, i, CHECK_0); | |
| 1200 if (found) { | |
| 1201 return i; | |
| 1202 } | |
| 1203 } | |
| 1204 | |
| 1205 return 0; // entry not found; return unused index zero (0) | |
| 1206 } // end find_matching_entry() | |
| 1207 | |
| 1208 | |
| 1209 #ifndef PRODUCT | |
| 1210 | |
| 1211 const char* constantPoolOopDesc::printable_name_at(int which) { | |
| 1212 | |
| 1213 constantTag tag = tag_at(which); | |
| 1214 | |
| 1215 if (tag.is_unresolved_string() || tag.is_string()) { | |
| 1216 return string_at_noresolve(which); | |
| 1217 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1218 return klass_name_at(which)->as_C_string(); | |
| 1219 } else if (tag.is_symbol()) { | |
| 1220 return symbol_at(which)->as_C_string(); | |
| 1221 } | |
| 1222 return ""; | |
| 1223 } | |
| 1224 | |
| 1225 #endif // PRODUCT | |
| 1226 | |
| 1227 | |
| 1228 // JVMTI GetConstantPool support | |
| 1229 | |
| 1230 // For temporary use until code is stable. | |
| 1231 #define DBG(code) | |
| 1232 | |
| 1233 static const char* WARN_MSG = "Must not be such entry!"; | |
| 1234 | |
| 1235 static void print_cpool_bytes(jint cnt, u1 *bytes) { | |
| 1236 jint size = 0; | |
| 1237 u2 idx1, idx2; | |
| 1238 | |
| 1239 for (jint idx = 1; idx < cnt; idx++) { | |
| 1240 jint ent_size = 0; | |
| 1241 u1 tag = *bytes++; | |
| 1242 size++; // count tag | |
| 1243 | |
| 1244 printf("const #%03d, tag: %02d ", idx, tag); | |
| 1245 switch(tag) { | |
| 1246 case JVM_CONSTANT_Invalid: { | |
| 1247 printf("Invalid"); | |
| 1248 break; | |
| 1249 } | |
| 1250 case JVM_CONSTANT_Unicode: { | |
| 1251 printf("Unicode %s", WARN_MSG); | |
| 1252 break; | |
| 1253 } | |
| 1254 case JVM_CONSTANT_Utf8: { | |
| 1255 u2 len = Bytes::get_Java_u2(bytes); | |
| 1256 char str[128]; | |
| 1257 if (len > 127) { | |
| 1258 len = 127; | |
| 1259 } | |
| 1260 strncpy(str, (char *) (bytes+2), len); | |
| 1261 str[len] = '\0'; | |
| 1262 printf("Utf8 \"%s\"", str); | |
| 1263 ent_size = 2 + len; | |
| 1264 break; | |
| 1265 } | |
| 1266 case JVM_CONSTANT_Integer: { | |
| 1267 u4 val = Bytes::get_Java_u4(bytes); | |
| 1268 printf("int %d", *(int *) &val); | |
| 1269 ent_size = 4; | |
| 1270 break; | |
| 1271 } | |
| 1272 case JVM_CONSTANT_Float: { | |
| 1273 u4 val = Bytes::get_Java_u4(bytes); | |
| 1274 printf("float %5.3ff", *(float *) &val); | |
| 1275 ent_size = 4; | |
| 1276 break; | |
| 1277 } | |
| 1278 case JVM_CONSTANT_Long: { | |
| 1279 u8 val = Bytes::get_Java_u8(bytes); | |
|
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1280 printf("long "INT64_FORMAT, *(jlong *) &val); |
| 0 | 1281 ent_size = 8; |
| 1282 idx++; // Long takes two cpool slots | |
| 1283 break; | |
| 1284 } | |
| 1285 case JVM_CONSTANT_Double: { | |
| 1286 u8 val = Bytes::get_Java_u8(bytes); | |
| 1287 printf("double %5.3fd", *(jdouble *)&val); | |
| 1288 ent_size = 8; | |
| 1289 idx++; // Double takes two cpool slots | |
| 1290 break; | |
| 1291 } | |
| 1292 case JVM_CONSTANT_Class: { | |
| 1293 idx1 = Bytes::get_Java_u2(bytes); | |
| 1294 printf("class #%03d", idx1); | |
| 1295 ent_size = 2; | |
| 1296 break; | |
| 1297 } | |
| 1298 case JVM_CONSTANT_String: { | |
| 1299 idx1 = Bytes::get_Java_u2(bytes); | |
| 1300 printf("String #%03d", idx1); | |
| 1301 ent_size = 2; | |
| 1302 break; | |
| 1303 } | |
| 1304 case JVM_CONSTANT_Fieldref: { | |
| 1305 idx1 = Bytes::get_Java_u2(bytes); | |
| 1306 idx2 = Bytes::get_Java_u2(bytes+2); | |
| 1307 printf("Field #%03d, #%03d", (int) idx1, (int) idx2); | |
| 1308 ent_size = 4; | |
| 1309 break; | |
| 1310 } | |
| 1311 case JVM_CONSTANT_Methodref: { | |
| 1312 idx1 = Bytes::get_Java_u2(bytes); | |
| 1313 idx2 = Bytes::get_Java_u2(bytes+2); | |
| 1314 printf("Method #%03d, #%03d", idx1, idx2); | |
| 1315 ent_size = 4; | |
| 1316 break; | |
| 1317 } | |
| 1318 case JVM_CONSTANT_InterfaceMethodref: { | |
| 1319 idx1 = Bytes::get_Java_u2(bytes); | |
| 1320 idx2 = Bytes::get_Java_u2(bytes+2); | |
| 1321 printf("InterfMethod #%03d, #%03d", idx1, idx2); | |
| 1322 ent_size = 4; | |
| 1323 break; | |
| 1324 } | |
| 1325 case JVM_CONSTANT_NameAndType: { | |
| 1326 idx1 = Bytes::get_Java_u2(bytes); | |
| 1327 idx2 = Bytes::get_Java_u2(bytes+2); | |
| 1328 printf("NameAndType #%03d, #%03d", idx1, idx2); | |
| 1329 ent_size = 4; | |
| 1330 break; | |
| 1331 } | |
| 1332 case JVM_CONSTANT_ClassIndex: { | |
| 1333 printf("ClassIndex %s", WARN_MSG); | |
| 1334 break; | |
| 1335 } | |
| 1336 case JVM_CONSTANT_UnresolvedClass: { | |
| 1337 printf("UnresolvedClass: %s", WARN_MSG); | |
| 1338 break; | |
| 1339 } | |
| 1340 case JVM_CONSTANT_UnresolvedClassInError: { | |
| 1341 printf("UnresolvedClassInErr: %s", WARN_MSG); | |
| 1342 break; | |
| 1343 } | |
| 1344 case JVM_CONSTANT_StringIndex: { | |
| 1345 printf("StringIndex: %s", WARN_MSG); | |
| 1346 break; | |
| 1347 } | |
| 1348 case JVM_CONSTANT_UnresolvedString: { | |
| 1349 printf("UnresolvedString: %s", WARN_MSG); | |
| 1350 break; | |
| 1351 } | |
| 1352 } | |
| 1353 printf(";\n"); | |
| 1354 bytes += ent_size; | |
| 1355 size += ent_size; | |
| 1356 } | |
| 1357 printf("Cpool size: %d\n", size); | |
| 1358 fflush(0); | |
| 1359 return; | |
| 1360 } /* end print_cpool_bytes */ | |
| 1361 | |
| 1362 | |
| 1363 // Returns size of constant pool entry. | |
| 1364 jint constantPoolOopDesc::cpool_entry_size(jint idx) { | |
| 1365 switch(tag_at(idx).value()) { | |
| 1366 case JVM_CONSTANT_Invalid: | |
| 1367 case JVM_CONSTANT_Unicode: | |
| 1368 return 1; | |
| 1369 | |
| 1370 case JVM_CONSTANT_Utf8: | |
| 1371 return 3 + symbol_at(idx)->utf8_length(); | |
| 1372 | |
| 1373 case JVM_CONSTANT_Class: | |
| 1374 case JVM_CONSTANT_String: | |
| 1375 case JVM_CONSTANT_ClassIndex: | |
| 1376 case JVM_CONSTANT_UnresolvedClass: | |
| 1377 case JVM_CONSTANT_UnresolvedClassInError: | |
| 1378 case JVM_CONSTANT_StringIndex: | |
| 1379 case JVM_CONSTANT_UnresolvedString: | |
| 1602 | 1380 case JVM_CONSTANT_MethodType: |
| 0 | 1381 return 3; |
| 1382 | |
| 1602 | 1383 case JVM_CONSTANT_MethodHandle: |
| 1384 return 4; //tag, ref_kind, ref_index | |
| 1385 | |
| 0 | 1386 case JVM_CONSTANT_Integer: |
| 1387 case JVM_CONSTANT_Float: | |
| 1388 case JVM_CONSTANT_Fieldref: | |
| 1389 case JVM_CONSTANT_Methodref: | |
| 1390 case JVM_CONSTANT_InterfaceMethodref: | |
| 1391 case JVM_CONSTANT_NameAndType: | |
|
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1392 return 5; |
|
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|
1393 |
|
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|
1394 case JVM_CONSTANT_InvokeDynamic: |
|
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1395 // u1 tag, u2 bsm, u2 nt, u2 argc, u2 argv[argc] |
|
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1396 return 7 + 2 * invoke_dynamic_argument_count_at(idx); |
| 0 | 1397 |
| 1398 case JVM_CONSTANT_Long: | |
| 1399 case JVM_CONSTANT_Double: | |
| 1400 return 9; | |
| 1401 } | |
| 1402 assert(false, "cpool_entry_size: Invalid constant pool entry tag"); | |
| 1403 return 1; | |
| 1404 } /* end cpool_entry_size */ | |
| 1405 | |
| 1406 | |
| 1407 // SymbolHashMap is used to find a constant pool index from a string. | |
| 1408 // This function fills in SymbolHashMaps, one for utf8s and one for | |
| 1409 // class names, returns size of the cpool raw bytes. | |
| 1410 jint constantPoolOopDesc::hash_entries_to(SymbolHashMap *symmap, | |
| 1411 SymbolHashMap *classmap) { | |
| 1412 jint size = 0; | |
| 1413 | |
| 1414 for (u2 idx = 1; idx < length(); idx++) { | |
| 1415 u2 tag = tag_at(idx).value(); | |
| 1416 size += cpool_entry_size(idx); | |
| 1417 | |
| 1418 switch(tag) { | |
| 1419 case JVM_CONSTANT_Utf8: { | |
| 1420 symbolOop sym = symbol_at(idx); | |
| 1421 symmap->add_entry(sym, idx); | |
| 1422 DBG(printf("adding symbol entry %s = %d\n", sym->as_utf8(), idx)); | |
| 1423 break; | |
| 1424 } | |
| 1425 case JVM_CONSTANT_Class: | |
| 1426 case JVM_CONSTANT_UnresolvedClass: | |
| 1427 case JVM_CONSTANT_UnresolvedClassInError: { | |
| 1428 symbolOop sym = klass_name_at(idx); | |
| 1429 classmap->add_entry(sym, idx); | |
| 1430 DBG(printf("adding class entry %s = %d\n", sym->as_utf8(), idx)); | |
| 1431 break; | |
| 1432 } | |
| 1433 case JVM_CONSTANT_Long: | |
| 1434 case JVM_CONSTANT_Double: { | |
| 1435 idx++; // Both Long and Double take two cpool slots | |
| 1436 break; | |
| 1437 } | |
| 1438 } | |
| 1439 } | |
| 1440 return size; | |
| 1441 } /* end hash_utf8_entries_to */ | |
| 1442 | |
| 1443 | |
| 1444 // Copy cpool bytes. | |
| 1445 // Returns: | |
| 1446 // 0, in case of OutOfMemoryError | |
| 1447 // -1, in case of internal error | |
| 1448 // > 0, count of the raw cpool bytes that have been copied | |
| 1449 int constantPoolOopDesc::copy_cpool_bytes(int cpool_size, | |
| 1450 SymbolHashMap* tbl, | |
| 1451 unsigned char *bytes) { | |
| 1452 u2 idx1, idx2; | |
| 1453 jint size = 0; | |
| 1454 jint cnt = length(); | |
| 1455 unsigned char *start_bytes = bytes; | |
| 1456 | |
| 1457 for (jint idx = 1; idx < cnt; idx++) { | |
| 1458 u1 tag = tag_at(idx).value(); | |
| 1459 jint ent_size = cpool_entry_size(idx); | |
| 1460 | |
| 1461 assert(size + ent_size <= cpool_size, "Size mismatch"); | |
| 1462 | |
| 1463 *bytes = tag; | |
| 1464 DBG(printf("#%03hd tag=%03hd, ", idx, tag)); | |
| 1465 switch(tag) { | |
| 1466 case JVM_CONSTANT_Invalid: { | |
| 1467 DBG(printf("JVM_CONSTANT_Invalid")); | |
| 1468 break; | |
| 1469 } | |
| 1470 case JVM_CONSTANT_Unicode: { | |
| 1471 assert(false, "Wrong constant pool tag: JVM_CONSTANT_Unicode"); | |
| 1472 DBG(printf("JVM_CONSTANT_Unicode")); | |
| 1473 break; | |
| 1474 } | |
| 1475 case JVM_CONSTANT_Utf8: { | |
| 1476 symbolOop sym = symbol_at(idx); | |
| 1477 char* str = sym->as_utf8(); | |
| 1478 // Warning! It's crashing on x86 with len = sym->utf8_length() | |
| 1479 int len = (int) strlen(str); | |
| 1480 Bytes::put_Java_u2((address) (bytes+1), (u2) len); | |
| 1481 for (int i = 0; i < len; i++) { | |
| 1482 bytes[3+i] = (u1) str[i]; | |
| 1483 } | |
| 1484 DBG(printf("JVM_CONSTANT_Utf8: %s ", str)); | |
| 1485 break; | |
| 1486 } | |
| 1487 case JVM_CONSTANT_Integer: { | |
| 1488 jint val = int_at(idx); | |
| 1489 Bytes::put_Java_u4((address) (bytes+1), *(u4*)&val); | |
| 1490 break; | |
| 1491 } | |
| 1492 case JVM_CONSTANT_Float: { | |
| 1493 jfloat val = float_at(idx); | |
| 1494 Bytes::put_Java_u4((address) (bytes+1), *(u4*)&val); | |
| 1495 break; | |
| 1496 } | |
| 1497 case JVM_CONSTANT_Long: { | |
| 1498 jlong val = long_at(idx); | |
| 1499 Bytes::put_Java_u8((address) (bytes+1), *(u8*)&val); | |
| 1500 idx++; // Long takes two cpool slots | |
| 1501 break; | |
| 1502 } | |
| 1503 case JVM_CONSTANT_Double: { | |
| 1504 jdouble val = double_at(idx); | |
| 1505 Bytes::put_Java_u8((address) (bytes+1), *(u8*)&val); | |
| 1506 idx++; // Double takes two cpool slots | |
| 1507 break; | |
| 1508 } | |
| 1509 case JVM_CONSTANT_Class: | |
| 1510 case JVM_CONSTANT_UnresolvedClass: | |
| 1511 case JVM_CONSTANT_UnresolvedClassInError: { | |
| 1512 *bytes = JVM_CONSTANT_Class; | |
| 1513 symbolOop sym = klass_name_at(idx); | |
| 1514 idx1 = tbl->symbol_to_value(sym); | |
| 1515 assert(idx1 != 0, "Have not found a hashtable entry"); | |
| 1516 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1517 DBG(printf("JVM_CONSTANT_Class: idx=#%03hd, %s", idx1, sym->as_utf8())); | |
| 1518 break; | |
| 1519 } | |
| 1520 case JVM_CONSTANT_String: { | |
| 1521 unsigned int hash; | |
| 1522 char *str = string_at_noresolve(idx); | |
| 1523 symbolOop sym = SymbolTable::lookup_only(str, (int) strlen(str), hash); | |
|
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1524 if (sym == NULL) { |
|
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1525 // sym can be NULL if string refers to incorrectly encoded JVM_CONSTANT_Utf8 |
|
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1526 // this can happen with JVM TI; see CR 6839599 for more details |
|
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1527 oop string = *(obj_at_addr(idx)); |
|
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1528 assert(java_lang_String::is_instance(string),"Not a String"); |
|
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1529 DBG(printf("Error #%03hd tag=%03hd\n", idx, tag)); |
|
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1530 idx1 = 0; |
|
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|
1531 for (int j = 0; j < tbl->table_size() && idx1 == 0; j++) { |
|
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1532 for (SymbolHashMapEntry* cur = tbl->bucket(j); cur != NULL; cur = cur->next()) { |
|
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|
1533 int length; |
|
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|
1534 sym = cur->symbol(); |
|
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|
1535 jchar* chars = sym->as_unicode(length); |
|
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1536 if (java_lang_String::equals(string, chars, length)) { |
|
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|
1537 idx1 = cur->value(); |
|
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|
1538 DBG(printf("Index found: %d\n",idx1)); |
|
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|
1539 break; |
|
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|
1540 } |
|
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|
1541 } |
|
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|
1542 } |
|
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|
1543 } else { |
|
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|
1544 idx1 = tbl->symbol_to_value(sym); |
|
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|
1545 } |
| 0 | 1546 assert(idx1 != 0, "Have not found a hashtable entry"); |
| 1547 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1548 DBG(printf("JVM_CONSTANT_String: idx=#%03hd, %s", idx1, str)); | |
| 1549 break; | |
| 1550 } | |
| 1551 case JVM_CONSTANT_UnresolvedString: { | |
| 1552 *bytes = JVM_CONSTANT_String; | |
| 1553 symbolOop sym = unresolved_string_at(idx); | |
| 1554 idx1 = tbl->symbol_to_value(sym); | |
| 1555 assert(idx1 != 0, "Have not found a hashtable entry"); | |
| 1556 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1557 DBG(char *str = sym->as_utf8()); | |
| 1558 DBG(printf("JVM_CONSTANT_UnresolvedString: idx=#%03hd, %s", idx1, str)); | |
| 1559 break; | |
| 1560 } | |
| 1561 case JVM_CONSTANT_Fieldref: | |
| 1562 case JVM_CONSTANT_Methodref: | |
| 1563 case JVM_CONSTANT_InterfaceMethodref: { | |
| 1564 idx1 = uncached_klass_ref_index_at(idx); | |
| 1565 idx2 = uncached_name_and_type_ref_index_at(idx); | |
| 1566 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1567 Bytes::put_Java_u2((address) (bytes+3), idx2); | |
| 1568 DBG(printf("JVM_CONSTANT_Methodref: %hd %hd", idx1, idx2)); | |
| 1569 break; | |
| 1570 } | |
| 1571 case JVM_CONSTANT_NameAndType: { | |
| 1572 idx1 = name_ref_index_at(idx); | |
| 1573 idx2 = signature_ref_index_at(idx); | |
| 1574 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1575 Bytes::put_Java_u2((address) (bytes+3), idx2); | |
| 1576 DBG(printf("JVM_CONSTANT_NameAndType: %hd %hd", idx1, idx2)); | |
| 1577 break; | |
| 1578 } | |
| 1579 case JVM_CONSTANT_ClassIndex: { | |
| 1580 *bytes = JVM_CONSTANT_Class; | |
| 1581 idx1 = klass_index_at(idx); | |
| 1582 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1583 DBG(printf("JVM_CONSTANT_ClassIndex: %hd", idx1)); | |
| 1584 break; | |
| 1585 } | |
| 1586 case JVM_CONSTANT_StringIndex: { | |
| 1587 *bytes = JVM_CONSTANT_String; | |
| 1588 idx1 = string_index_at(idx); | |
| 1589 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1590 DBG(printf("JVM_CONSTANT_StringIndex: %hd", idx1)); | |
| 1591 break; | |
| 1592 } | |
| 1602 | 1593 case JVM_CONSTANT_MethodHandle: { |
| 1594 *bytes = JVM_CONSTANT_MethodHandle; | |
| 1595 int kind = method_handle_ref_kind_at(idx); | |
| 1596 idx1 = method_handle_index_at(idx); | |
| 1597 *(bytes+1) = (unsigned char) kind; | |
| 1598 Bytes::put_Java_u2((address) (bytes+2), idx1); | |
| 1599 DBG(printf("JVM_CONSTANT_MethodHandle: %d %hd", kind, idx1)); | |
| 1600 break; | |
| 1601 } | |
| 1602 case JVM_CONSTANT_MethodType: { | |
| 1603 *bytes = JVM_CONSTANT_MethodType; | |
| 1604 idx1 = method_type_index_at(idx); | |
| 1605 Bytes::put_Java_u2((address) (bytes+1), idx1); | |
| 1606 DBG(printf("JVM_CONSTANT_MethodType: %hd", idx1)); | |
| 1607 break; | |
| 1608 } | |
|
1660
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|
1609 case JVM_CONSTANT_InvokeDynamic: { |
|
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|
1610 *bytes = JVM_CONSTANT_InvokeDynamic; |
|
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|
1611 idx1 = invoke_dynamic_bootstrap_method_ref_index_at(idx); |
|
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|
1612 idx2 = invoke_dynamic_name_and_type_ref_index_at(idx); |
|
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1613 int argc = invoke_dynamic_argument_count_at(idx); |
|
1660
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|
1614 Bytes::put_Java_u2((address) (bytes+1), idx1); |
|
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|
1615 Bytes::put_Java_u2((address) (bytes+3), idx2); |
|
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1616 Bytes::put_Java_u2((address) (bytes+5), argc); |
|
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1617 for (int arg_i = 0; arg_i < argc; arg_i++) { |
|
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|
1618 int arg = invoke_dynamic_argument_index_at(idx, arg_i); |
|
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|
1619 Bytes::put_Java_u2((address) (bytes+7+2*arg_i), arg); |
|
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|
1620 } |
|
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|
1621 DBG(printf("JVM_CONSTANT_InvokeDynamic: %hd %hd [%d]", idx1, idx2, argc)); |
|
1660
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diff
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|
1622 break; |
|
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|
1623 } |
| 0 | 1624 } |
| 1625 DBG(printf("\n")); | |
| 1626 bytes += ent_size; | |
| 1627 size += ent_size; | |
| 1628 } | |
| 1629 assert(size == cpool_size, "Size mismatch"); | |
| 1630 | |
| 1631 // Keep temorarily for debugging until it's stable. | |
| 1632 DBG(print_cpool_bytes(cnt, start_bytes)); | |
| 1633 return (int)(bytes - start_bytes); | |
| 1634 } /* end copy_cpool_bytes */ | |
| 1635 | |
| 1636 | |
| 1637 void SymbolHashMap::add_entry(symbolOop sym, u2 value) { | |
| 1638 char *str = sym->as_utf8(); | |
| 1639 unsigned int hash = compute_hash(str, sym->utf8_length()); | |
| 1640 unsigned int index = hash % table_size(); | |
| 1641 | |
| 1642 // check if already in map | |
| 1643 // we prefer the first entry since it is more likely to be what was used in | |
| 1644 // the class file | |
| 1645 for (SymbolHashMapEntry *en = bucket(index); en != NULL; en = en->next()) { | |
| 1646 assert(en->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); | |
| 1647 if (en->hash() == hash && en->symbol() == sym) { | |
| 1648 return; // already there | |
| 1649 } | |
| 1650 } | |
| 1651 | |
| 1652 SymbolHashMapEntry* entry = new SymbolHashMapEntry(hash, sym, value); | |
| 1653 entry->set_next(bucket(index)); | |
| 1654 _buckets[index].set_entry(entry); | |
| 1655 assert(entry->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); | |
| 1656 } | |
| 1657 | |
| 1658 SymbolHashMapEntry* SymbolHashMap::find_entry(symbolOop sym) { | |
| 1659 assert(sym != NULL, "SymbolHashMap::find_entry - symbol is NULL"); | |
| 1660 char *str = sym->as_utf8(); | |
| 1661 int len = sym->utf8_length(); | |
| 1662 unsigned int hash = SymbolHashMap::compute_hash(str, len); | |
| 1663 unsigned int index = hash % table_size(); | |
| 1664 for (SymbolHashMapEntry *en = bucket(index); en != NULL; en = en->next()) { | |
| 1665 assert(en->symbol() != NULL, "SymbolHashMapEntry symbol is NULL"); | |
| 1666 if (en->hash() == hash && en->symbol() == sym) { | |
| 1667 return en; | |
| 1668 } | |
| 1669 } | |
| 1670 return NULL; | |
| 1671 } |