1 /* 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/vmSymbols.hpp" 27 #include "memory/oopFactory.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/handles.inline.hpp" 30 #include "utilities/xmlstream.hpp" 31 32 33 Symbol* vmSymbols::_symbols[vmSymbols::SID_LIMIT]; 34 35 Symbol* vmSymbols::_type_signatures[T_VOID+1] = { NULL /*, NULL...*/ }; 36 37 inline int compare_symbol(Symbol* a, Symbol* b) { 38 if (a == b) return 0; 39 // follow the natural address order: 40 return (address)a > (address)b ? +1 : -1; 41 } 42 43 static vmSymbols::SID vm_symbol_index[vmSymbols::SID_LIMIT]; 44 extern "C" { 45 static int compare_vmsymbol_sid(const void* void_a, const void* void_b) { 46 Symbol* a = vmSymbols::symbol_at(*((vmSymbols::SID*) void_a)); 47 Symbol* b = vmSymbols::symbol_at(*((vmSymbols::SID*) void_b)); 48 return compare_symbol(a, b); 49 } 50 } 51 52 #ifdef ASSERT 53 #define VM_SYMBOL_ENUM_NAME_BODY(name, string) #name "\0" 54 static const char* vm_symbol_enum_names = 55 VM_SYMBOLS_DO(VM_SYMBOL_ENUM_NAME_BODY, VM_ALIAS_IGNORE) 56 "\0"; 57 static const char* vm_symbol_enum_name(vmSymbols::SID sid) { 58 const char* string = &vm_symbol_enum_names[0]; 59 int skip = (int)sid - (int)vmSymbols::FIRST_SID; 60 for (; skip != 0; skip--) { 61 size_t skiplen = strlen(string); 62 if (skiplen == 0) return "<unknown>"; // overflow 63 string += skiplen+1; 64 } 65 return string; 66 } 67 #endif //ASSERT 68 69 // Put all the VM symbol strings in one place. 70 // Makes for a more compact libjvm. 71 #define VM_SYMBOL_BODY(name, string) string "\0" 72 static const char* vm_symbol_bodies = VM_SYMBOLS_DO(VM_SYMBOL_BODY, VM_ALIAS_IGNORE); 73 74 void vmSymbols::initialize(TRAPS) { 75 assert((int)SID_LIMIT <= (1<<log2_SID_LIMIT), "must fit in this bitfield"); 76 assert((int)SID_LIMIT*5 > (1<<log2_SID_LIMIT), "make the bitfield smaller, please"); 77 assert(vmIntrinsics::FLAG_LIMIT <= (1 << vmIntrinsics::log2_FLAG_LIMIT), "must fit in this bitfield"); 78 79 if (!UseSharedSpaces) { 80 const char* string = &vm_symbol_bodies[0]; 81 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 82 Symbol* sym = SymbolTable::new_permanent_symbol(string, CHECK); 83 _symbols[index] = sym; 84 string += strlen(string); // skip string body 85 string += 1; // skip trailing null 86 } 87 88 _type_signatures[T_BYTE] = byte_signature(); 89 _type_signatures[T_CHAR] = char_signature(); 90 _type_signatures[T_DOUBLE] = double_signature(); 91 _type_signatures[T_FLOAT] = float_signature(); 92 _type_signatures[T_INT] = int_signature(); 93 _type_signatures[T_LONG] = long_signature(); 94 _type_signatures[T_SHORT] = short_signature(); 95 _type_signatures[T_BOOLEAN] = bool_signature(); 96 _type_signatures[T_VOID] = void_signature(); 97 // no single signatures for T_OBJECT or T_ARRAY 98 } 99 100 #ifdef ASSERT 101 // Check for duplicates: 102 for (int i1 = (int)FIRST_SID; i1 < (int)SID_LIMIT; i1++) { 103 Symbol* sym = symbol_at((SID)i1); 104 for (int i2 = (int)FIRST_SID; i2 < i1; i2++) { 105 if (symbol_at((SID)i2) == sym) { 106 tty->print("*** Duplicate VM symbol SIDs %s(%d) and %s(%d): \"", 107 vm_symbol_enum_name((SID)i2), i2, 108 vm_symbol_enum_name((SID)i1), i1); 109 sym->print_symbol_on(tty); 110 tty->print_cr("\""); 111 } 112 } 113 } 114 #endif //ASSERT 115 116 // Create an index for find_id: 117 { 118 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 119 vm_symbol_index[index] = (SID)index; 120 } 121 int num_sids = SID_LIMIT-FIRST_SID; 122 qsort(&vm_symbol_index[FIRST_SID], num_sids, sizeof(vm_symbol_index[0]), 123 compare_vmsymbol_sid); 124 } 125 126 #ifdef ASSERT 127 { 128 // Spot-check correspondence between strings, symbols, and enums: 129 assert(_symbols[NO_SID] == NULL, "must be"); 130 const char* str = "java/lang/Object"; 131 TempNewSymbol jlo = SymbolTable::new_permanent_symbol(str, CHECK); 132 assert(strncmp(str, (char*)jlo->base(), jlo->utf8_length()) == 0, ""); 133 assert(jlo == java_lang_Object(), ""); 134 SID sid = VM_SYMBOL_ENUM_NAME(java_lang_Object); 135 assert(find_sid(jlo) == sid, ""); 136 assert(symbol_at(sid) == jlo, ""); 137 138 // Make sure find_sid produces the right answer in each case. 139 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 140 Symbol* sym = symbol_at((SID)index); 141 sid = find_sid(sym); 142 assert(sid == (SID)index, "symbol index works"); 143 // Note: If there are duplicates, this assert will fail. 144 // A "Duplicate VM symbol" message will have already been printed. 145 } 146 147 // The string "format" happens (at the moment) not to be a vmSymbol, 148 // though it is a method name in java.lang.String. 149 str = "format"; 150 TempNewSymbol fmt = SymbolTable::new_permanent_symbol(str, CHECK); 151 sid = find_sid(fmt); 152 assert(sid == NO_SID, "symbol index works (negative test)"); 153 } 154 #endif 155 } 156 157 158 #ifndef PRODUCT 159 const char* vmSymbols::name_for(vmSymbols::SID sid) { 160 if (sid == NO_SID) 161 return "NO_SID"; 162 const char* string = &vm_symbol_bodies[0]; 163 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 164 if (index == (int)sid) 165 return string; 166 string += strlen(string); // skip string body 167 string += 1; // skip trailing null 168 } 169 return "BAD_SID"; 170 } 171 #endif 172 173 174 175 void vmSymbols::symbols_do(SymbolClosure* f) { 176 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 177 f->do_symbol(&_symbols[index]); 178 } 179 for (int i = 0; i < T_VOID+1; i++) { 180 f->do_symbol(&_type_signatures[i]); 181 } 182 } 183 184 void vmSymbols::serialize(SerializeClosure* soc) { 185 soc->do_region((u_char*)&_symbols[FIRST_SID], 186 (SID_LIMIT - FIRST_SID) * sizeof(_symbols[0])); 187 soc->do_region((u_char*)_type_signatures, sizeof(_type_signatures)); 188 } 189 190 191 BasicType vmSymbols::signature_type(Symbol* s) { 192 assert(s != NULL, "checking"); 193 for (int i = T_BOOLEAN; i < T_VOID+1; i++) { 194 if (s == _type_signatures[i]) { 195 return (BasicType)i; 196 } 197 } 198 return T_OBJECT; 199 } 200 201 202 static int mid_hint = (int)vmSymbols::FIRST_SID+1; 203 204 #ifndef PRODUCT 205 static int find_sid_calls, find_sid_probes; 206 // (Typical counts are calls=7000 and probes=17000.) 207 #endif 208 209 vmSymbols::SID vmSymbols::find_sid(Symbol* symbol) { 210 // Handle the majority of misses by a bounds check. 211 // Then, use a binary search over the index. 212 // Expected trip count is less than log2_SID_LIMIT, about eight. 213 // This is slow but acceptable, given that calls are not 214 // dynamically common. (Method*::intrinsic_id has a cache.) 215 NOT_PRODUCT(find_sid_calls++); 216 int min = (int)FIRST_SID, max = (int)SID_LIMIT - 1; 217 SID sid = NO_SID, sid1; 218 int cmp1; 219 sid1 = vm_symbol_index[min]; 220 cmp1 = compare_symbol(symbol, symbol_at(sid1)); 221 if (cmp1 <= 0) { // before the first 222 if (cmp1 == 0) sid = sid1; 223 } else { 224 sid1 = vm_symbol_index[max]; 225 cmp1 = compare_symbol(symbol, symbol_at(sid1)); 226 if (cmp1 >= 0) { // after the last 227 if (cmp1 == 0) sid = sid1; 228 } else { 229 // After checking the extremes, do a binary search. 230 ++min; --max; // endpoints are done 231 int mid = mid_hint; // start at previous success 232 while (max >= min) { 233 assert(mid >= min && mid <= max, ""); 234 NOT_PRODUCT(find_sid_probes++); 235 sid1 = vm_symbol_index[mid]; 236 cmp1 = compare_symbol(symbol, symbol_at(sid1)); 237 if (cmp1 == 0) { 238 mid_hint = mid; 239 sid = sid1; 240 break; 241 } 242 if (cmp1 < 0) 243 max = mid - 1; // symbol < symbol_at(sid) 244 else 245 min = mid + 1; 246 247 // Pick a new probe point: 248 mid = (max + min) / 2; 249 } 250 } 251 } 252 253 #ifdef ASSERT 254 // Perform the exhaustive self-check the first 1000 calls, 255 // and every 100 calls thereafter. 256 static int find_sid_check_count = -2000; 257 if ((uint)++find_sid_check_count > (uint)100) { 258 if (find_sid_check_count > 0) find_sid_check_count = 0; 259 260 // Make sure this is the right answer, using linear search. 261 // (We have already proven that there are no duplicates in the list.) 262 SID sid2 = NO_SID; 263 for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) { 264 Symbol* sym2 = symbol_at((SID)index); 265 if (sym2 == symbol) { 266 sid2 = (SID)index; 267 break; 268 } 269 } 270 // Unless it's a duplicate, assert that the sids are the same. 271 if (_symbols[sid] != _symbols[sid2]) { 272 assert(sid == sid2, "binary same as linear search"); 273 } 274 } 275 #endif //ASSERT 276 277 return sid; 278 } 279 280 vmSymbols::SID vmSymbols::find_sid(const char* symbol_name) { 281 Symbol* symbol = SymbolTable::probe(symbol_name, (int) strlen(symbol_name)); 282 if (symbol == NULL) return NO_SID; 283 return find_sid(symbol); 284 } 285 286 static vmIntrinsics::ID wrapper_intrinsic(BasicType type, bool unboxing) { 287 #define TYPE2(type, unboxing) ((int)(type)*2 + ((unboxing) ? 1 : 0)) 288 switch (TYPE2(type, unboxing)) { 289 #define BASIC_TYPE_CASE(type, box, unbox) \ 290 case TYPE2(type, false): return vmIntrinsics::box; \ 291 case TYPE2(type, true): return vmIntrinsics::unbox 292 BASIC_TYPE_CASE(T_BOOLEAN, _Boolean_valueOf, _booleanValue); 293 BASIC_TYPE_CASE(T_BYTE, _Byte_valueOf, _byteValue); 294 BASIC_TYPE_CASE(T_CHAR, _Character_valueOf, _charValue); 295 BASIC_TYPE_CASE(T_SHORT, _Short_valueOf, _shortValue); 296 BASIC_TYPE_CASE(T_INT, _Integer_valueOf, _intValue); 297 BASIC_TYPE_CASE(T_LONG, _Long_valueOf, _longValue); 298 BASIC_TYPE_CASE(T_FLOAT, _Float_valueOf, _floatValue); 299 BASIC_TYPE_CASE(T_DOUBLE, _Double_valueOf, _doubleValue); 300 #undef BASIC_TYPE_CASE 301 } 302 #undef TYPE2 303 return vmIntrinsics::_none; 304 } 305 306 vmIntrinsics::ID vmIntrinsics::for_boxing(BasicType type) { 307 return wrapper_intrinsic(type, false); 308 } 309 vmIntrinsics::ID vmIntrinsics::for_unboxing(BasicType type) { 310 return wrapper_intrinsic(type, true); 311 } 312 313 vmIntrinsics::ID vmIntrinsics::for_raw_conversion(BasicType src, BasicType dest) { 314 #define SRC_DEST(s,d) (((int)(s) << 4) + (int)(d)) 315 switch (SRC_DEST(src, dest)) { 316 case SRC_DEST(T_INT, T_FLOAT): return vmIntrinsics::_intBitsToFloat; 317 case SRC_DEST(T_FLOAT, T_INT): return vmIntrinsics::_floatToRawIntBits; 318 319 case SRC_DEST(T_LONG, T_DOUBLE): return vmIntrinsics::_longBitsToDouble; 320 case SRC_DEST(T_DOUBLE, T_LONG): return vmIntrinsics::_doubleToRawLongBits; 321 } 322 #undef SRC_DEST 323 324 return vmIntrinsics::_none; 325 } 326 327 // Some intrinsics produce different results if they are not pinned 328 bool vmIntrinsics::should_be_pinned(vmIntrinsics::ID id) { 329 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); 330 switch(id) { 331 #ifdef JFR_HAVE_INTRINSICS 332 case vmIntrinsics::_counterTime: 333 #endif 334 case vmIntrinsics::_currentTimeMillis: 335 case vmIntrinsics::_nanoTime: 336 return true; 337 default: 338 return false; 339 } 340 } 341 342 #define VM_INTRINSIC_INITIALIZE(id, klass, name, sig, flags) #id "\0" 343 static const char* vm_intrinsic_name_bodies = 344 VM_INTRINSICS_DO(VM_INTRINSIC_INITIALIZE, 345 VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE); 346 347 static const char* vm_intrinsic_name_table[vmIntrinsics::ID_LIMIT]; 348 349 const char* vmIntrinsics::name_at(vmIntrinsics::ID id) { 350 const char** nt = &vm_intrinsic_name_table[0]; 351 if (nt[_none] == NULL) { 352 char* string = (char*) &vm_intrinsic_name_bodies[0]; 353 for (int index = FIRST_ID; index < ID_LIMIT; index++) { 354 nt[index] = string; 355 string += strlen(string); // skip string body 356 string += 1; // skip trailing null 357 } 358 assert(!strcmp(nt[_hashCode], "_hashCode"), "lined up"); 359 nt[_none] = "_none"; 360 } 361 if ((uint)id < (uint)ID_LIMIT) 362 return vm_intrinsic_name_table[(uint)id]; 363 else 364 return "(unknown intrinsic)"; 365 } 366 367 // These are flag-matching functions: 368 inline bool match_F_R(jshort flags) { 369 const int req = 0; 370 const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED; 371 return (flags & (req | neg)) == req; 372 } 373 inline bool match_F_Y(jshort flags) { 374 const int req = JVM_ACC_SYNCHRONIZED; 375 const int neg = JVM_ACC_STATIC; 376 return (flags & (req | neg)) == req; 377 } 378 inline bool match_F_RN(jshort flags) { 379 const int req = JVM_ACC_NATIVE; 380 const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED; 381 return (flags & (req | neg)) == req; 382 } 383 inline bool match_F_S(jshort flags) { 384 const int req = JVM_ACC_STATIC; 385 const int neg = JVM_ACC_SYNCHRONIZED; 386 return (flags & (req | neg)) == req; 387 } 388 inline bool match_F_SN(jshort flags) { 389 const int req = JVM_ACC_STATIC | JVM_ACC_NATIVE; 390 const int neg = JVM_ACC_SYNCHRONIZED; 391 return (flags & (req | neg)) == req; 392 } 393 inline bool match_F_RNY(jshort flags) { 394 const int req = JVM_ACC_NATIVE | JVM_ACC_SYNCHRONIZED; 395 const int neg = JVM_ACC_STATIC; 396 return (flags & (req | neg)) == req; 397 } 398 399 // These are for forming case labels: 400 #define ID3(x, y, z) (( jlong)(z) + \ 401 ((jlong)(y) << vmSymbols::log2_SID_LIMIT) + \ 402 ((jlong)(x) << (2*vmSymbols::log2_SID_LIMIT)) ) 403 #define SID_ENUM(n) vmSymbols::VM_SYMBOL_ENUM_NAME(n) 404 405 vmIntrinsics::ID vmIntrinsics::find_id_impl(vmSymbols::SID holder, 406 vmSymbols::SID name, 407 vmSymbols::SID sig, 408 jshort flags) { 409 assert((int)vmSymbols::SID_LIMIT <= (1<<vmSymbols::log2_SID_LIMIT), "must fit"); 410 411 // Let the C compiler build the decision tree. 412 413 #define VM_INTRINSIC_CASE(id, klass, name, sig, fcode) \ 414 case ID3(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig)): \ 415 if (!match_##fcode(flags)) break; \ 416 return id; 417 418 switch (ID3(holder, name, sig)) { 419 VM_INTRINSICS_DO(VM_INTRINSIC_CASE, 420 VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE); 421 } 422 return vmIntrinsics::_none; 423 424 #undef VM_INTRINSIC_CASE 425 } 426 427 428 const char* vmIntrinsics::short_name_as_C_string(vmIntrinsics::ID id, char* buf, int buflen) { 429 const char* str = name_at(id); 430 #ifndef PRODUCT 431 const char* kname = vmSymbols::name_for(class_for(id)); 432 const char* mname = vmSymbols::name_for(name_for(id)); 433 const char* sname = vmSymbols::name_for(signature_for(id)); 434 const char* fname = ""; 435 switch (flags_for(id)) { 436 case F_Y: fname = "synchronized "; break; 437 case F_RN: fname = "native "; break; 438 case F_SN: fname = "native static "; break; 439 case F_S: fname = "static "; break; 440 case F_RNY:fname = "native synchronized "; break; 441 } 442 const char* kptr = strrchr(kname, '/'); 443 if (kptr != NULL) kname = kptr + 1; 444 int len = jio_snprintf(buf, buflen, "%s: %s%s.%s%s", 445 str, fname, kname, mname, sname); 446 if (len < buflen) 447 str = buf; 448 #endif //PRODUCT 449 return str; 450 } 451 452 453 // These are to get information about intrinsics. 454 455 #define ID4(x, y, z, f) ((ID3(x, y, z) << vmIntrinsics::log2_FLAG_LIMIT) | (jlong) (f)) 456 457 static const jlong intrinsic_info_array[vmIntrinsics::ID_LIMIT+1] = { 458 #define VM_INTRINSIC_INFO(ignore_id, klass, name, sig, fcode) \ 459 ID4(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig), vmIntrinsics::fcode), 460 461 0, VM_INTRINSICS_DO(VM_INTRINSIC_INFO, 462 VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE) 463 0 464 #undef VM_INTRINSIC_INFO 465 }; 466 467 inline jlong intrinsic_info(vmIntrinsics::ID id) { 468 return intrinsic_info_array[vmIntrinsics::ID_from((int)id)]; 469 } 470 471 vmSymbols::SID vmIntrinsics::class_for(vmIntrinsics::ID id) { 472 jlong info = intrinsic_info(id); 473 int shift = 2*vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT); 474 assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1021, ""); 475 return vmSymbols::SID( (info >> shift) & mask ); 476 } 477 478 vmSymbols::SID vmIntrinsics::name_for(vmIntrinsics::ID id) { 479 jlong info = intrinsic_info(id); 480 int shift = vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT); 481 assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1022, ""); 482 return vmSymbols::SID( (info >> shift) & mask ); 483 } 484 485 vmSymbols::SID vmIntrinsics::signature_for(vmIntrinsics::ID id) { 486 jlong info = intrinsic_info(id); 487 int shift = log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT); 488 assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1023, ""); 489 return vmSymbols::SID( (info >> shift) & mask ); 490 } 491 492 vmIntrinsics::Flags vmIntrinsics::flags_for(vmIntrinsics::ID id) { 493 jlong info = intrinsic_info(id); 494 int shift = 0, mask = right_n_bits(log2_FLAG_LIMIT); 495 assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 15, ""); 496 return Flags( (info >> shift) & mask ); 497 } 498 499 500 #ifndef PRODUCT 501 // verify_method performs an extra check on a matched intrinsic method 502 503 static bool match_method(Method* m, Symbol* n, Symbol* s) { 504 return (m->name() == n && 505 m->signature() == s); 506 } 507 508 static vmIntrinsics::ID match_method_with_klass(Method* m, Symbol* mk) { 509 #define VM_INTRINSIC_MATCH(id, klassname, namepart, sigpart, flags) \ 510 { Symbol* k = vmSymbols::klassname(); \ 511 if (mk == k) { \ 512 Symbol* n = vmSymbols::namepart(); \ 513 Symbol* s = vmSymbols::sigpart(); \ 514 if (match_method(m, n, s)) \ 515 return vmIntrinsics::id; \ 516 } } 517 VM_INTRINSICS_DO(VM_INTRINSIC_MATCH, 518 VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE); 519 return vmIntrinsics::_none; 520 #undef VM_INTRINSIC_MATCH 521 } 522 523 void vmIntrinsics::verify_method(ID actual_id, Method* m) { 524 Symbol* mk = m->method_holder()->name(); 525 ID declared_id = match_method_with_klass(m, mk); 526 527 if (declared_id == actual_id) return; // success 528 529 if (declared_id == _none && actual_id != _none && mk == vmSymbols::java_lang_StrictMath()) { 530 // Here are a few special cases in StrictMath not declared in vmSymbols.hpp. 531 switch (actual_id) { 532 case _min: 533 case _max: 534 case _dsqrt: 535 declared_id = match_method_with_klass(m, vmSymbols::java_lang_Math()); 536 if (declared_id == actual_id) return; // acceptable alias 537 break; 538 } 539 } 540 541 const char* declared_name = name_at(declared_id); 542 const char* actual_name = name_at(actual_id); 543 methodHandle mh = m; 544 m = NULL; 545 ttyLocker ttyl; 546 if (xtty != NULL) { 547 xtty->begin_elem("intrinsic_misdeclared actual='%s' declared='%s'", 548 actual_name, declared_name); 549 xtty->method(mh); 550 xtty->end_elem("%s", ""); 551 } 552 if (PrintMiscellaneous && (WizardMode || Verbose)) { 553 tty->print_cr("*** misidentified method; %s(%d) should be %s(%d):", 554 declared_name, declared_id, actual_name, actual_id); 555 mh()->print_short_name(tty); 556 tty->cr(); 557 } 558 } 559 #endif //PRODUCT