1 /* 2 * Copyright (c) 1998, 2017, 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 #ifndef SHARE_VM_OOPS_CPCACHEOOP_HPP 26 #define SHARE_VM_OOPS_CPCACHEOOP_HPP 27 28 #include "interpreter/bytecodes.hpp" 29 #include "memory/allocation.hpp" 30 #include "oops/array.hpp" 31 #include "oops/oopHandle.hpp" 32 #include "runtime/orderAccess.hpp" 33 #include "utilities/align.hpp" 34 #include "utilities/constantTag.hpp" 35 36 class PSPromotionManager; 37 38 // The ConstantPoolCache is not a cache! It is the resolution table that the 39 // interpreter uses to avoid going into the runtime and a way to access resolved 40 // values. 41 42 // A ConstantPoolCacheEntry describes an individual entry of the constant 43 // pool cache. There's 2 principal kinds of entries: field entries for in- 44 // stance & static field access, and method entries for invokes. Some of 45 // the entry layout is shared and looks as follows: 46 // 47 // bit number |31 0| 48 // bit length |-8--|-8--|---16----| 49 // -------------------------------- 50 // _indices [ b2 | b1 | index ] index = constant_pool_index 51 // _f1 [ entry specific ] metadata ptr (method or klass) 52 // _f2 [ entry specific ] vtable or res_ref index, or vfinal method ptr 53 // _flags [tos|0|F=1|0|0|0|f|v|0 |0000|field_index] (for field entries) 54 // bit length [ 4 |1| 1 |1|1|1|1|1|1 |1 |-3-|----16-----] 55 // _flags [tos|0|F=0|M|A|I|f|0|vf|indy_rf|000|00000|psize] (for method entries) 56 // bit length [ 4 |1| 1 |1|1|1|1|1|1 |-4--|--8--|--8--] 57 58 // -------------------------------- 59 // 60 // with: 61 // index = original constant pool index 62 // b1 = bytecode 1 63 // b2 = bytecode 2 64 // psize = parameters size (method entries only) 65 // field_index = index into field information in holder InstanceKlass 66 // The index max is 0xffff (max number of fields in constant pool) 67 // and is multiplied by (InstanceKlass::next_offset) when accessing. 68 // tos = TosState 69 // F = the entry is for a field (or F=0 for a method) 70 // A = call site has an appendix argument (loaded from resolved references) 71 // I = interface call is forced virtual (must use a vtable index or vfinal) 72 // f = field or method is final 73 // v = field is volatile 74 // vf = virtual but final (method entries only: is_vfinal()) 75 // indy_rf = call site specifier method resolution failed 76 // 77 // The flags after TosState have the following interpretation: 78 // bit 27: 0 for fields, 1 for methods 79 // f flag true if field is marked final 80 // v flag true if field is volatile (only for fields) 81 // f2 flag true if f2 contains an oop (e.g., virtual final method) 82 // fv flag true if invokeinterface used for method in class Object 83 // 84 // The flags 31, 30, 29, 28 together build a 4 bit number 0 to 16 with the 85 // following mapping to the TosState states: 86 // 87 // btos: 0 88 // ztos: 1 89 // ctos: 2 90 // stos: 3 91 // itos: 4 92 // ltos: 5 93 // ftos: 6 94 // dtos: 7 95 // atos: 8 96 // vtos: 9 97 // 98 // Entry specific: field entries: 99 // _indices = get (b1 section) and put (b2 section) bytecodes, original constant pool index 100 // _f1 = field holder (as a java.lang.Class, not a Klass*) 101 // _f2 = field offset in bytes 102 // _flags = field type information, original FieldInfo index in field holder 103 // (field_index section) 104 // 105 // Entry specific: method entries: 106 // _indices = invoke code for f1 (b1 section), invoke code for f2 (b2 section), 107 // original constant pool index 108 // _f1 = Method* for non-virtual calls, unused by virtual calls. 109 // for interface calls, which are essentially virtual but need a klass, 110 // contains Klass* for the corresponding interface. 111 // for invokedynamic and invokehandle, f1 contains the adapter method which 112 // manages the actual call. The appendix is stored in the ConstantPool 113 // resolved_references array. 114 // (upcoming metadata changes will move the appendix to a separate array) 115 // _f2 = vtable/itable index (or final Method*) for virtual calls only, 116 // unused by non-virtual. The is_vfinal flag indicates this is a 117 // method pointer for a final method, not an index. 118 // _flags = method type info (t section), 119 // virtual final bit (vfinal), 120 // parameter size (psize section) 121 // 122 // Note: invokevirtual & invokespecial bytecodes can share the same constant 123 // pool entry and thus the same constant pool cache entry. All invoke 124 // bytecodes but invokevirtual use only _f1 and the corresponding b1 125 // bytecode, while invokevirtual uses only _f2 and the corresponding 126 // b2 bytecode. The value of _flags is shared for both types of entries. 127 // 128 // The fields are volatile so that they are stored in the order written in the 129 // source code. The _indices field with the bytecode must be written last. 130 131 class CallInfo; 132 133 class ConstantPoolCacheEntry VALUE_OBJ_CLASS_SPEC { 134 friend class VMStructs; 135 friend class constantPoolCacheKlass; 136 friend class ConstantPool; 137 friend class InterpreterRuntime; 138 139 private: 140 volatile intx _indices; // constant pool index & rewrite bytecodes 141 Metadata* volatile _f1; // entry specific metadata field 142 volatile intx _f2; // entry specific int/metadata field 143 volatile intx _flags; // flags 144 145 146 void set_bytecode_1(Bytecodes::Code code); 147 void set_bytecode_2(Bytecodes::Code code); 148 void set_f1(Metadata* f1) { 149 Metadata* existing_f1 = _f1; // read once 150 assert(existing_f1 == NULL || existing_f1 == f1, "illegal field change"); 151 _f1 = f1; 152 } 153 void release_set_f1(Metadata* f1); 154 void set_f2(intx f2) { 155 intx existing_f2 = _f2; // read once 156 assert(existing_f2 == 0 || existing_f2 == f2, "illegal field change"); 157 _f2 = f2; 158 } 159 void set_f2_as_vfinal_method(Method* f2) { 160 assert(is_vfinal(), "flags must be set"); 161 set_f2((intx)f2); 162 } 163 int make_flags(TosState state, int option_bits, int field_index_or_method_params); 164 void set_flags(intx flags) { _flags = flags; } 165 void set_field_flags(TosState field_type, int option_bits, int field_index) { 166 assert((field_index & field_index_mask) == field_index, "field_index in range"); 167 set_flags(make_flags(field_type, option_bits | (1 << is_field_entry_shift), field_index)); 168 } 169 void set_method_flags(TosState return_type, int option_bits, int method_params) { 170 assert((method_params & parameter_size_mask) == method_params, "method_params in range"); 171 set_flags(make_flags(return_type, option_bits, method_params)); 172 } 173 174 public: 175 // specific bit definitions for the flags field: 176 // (Note: the interpreter must use these definitions to access the CP cache.) 177 enum { 178 // high order bits are the TosState corresponding to field type or method return type 179 tos_state_bits = 4, 180 tos_state_mask = right_n_bits(tos_state_bits), 181 tos_state_shift = BitsPerInt - tos_state_bits, // see verify_tos_state_shift below 182 // misc. option bits; can be any bit position in [16..27] 183 is_field_entry_shift = 26, // (F) is it a field or a method? 184 has_method_type_shift = 25, // (M) does the call site have a MethodType? 185 has_appendix_shift = 24, // (A) does the call site have an appendix argument? 186 is_forced_virtual_shift = 23, // (I) is the interface reference forced to virtual mode? 187 is_final_shift = 22, // (f) is the field or method final? 188 is_volatile_shift = 21, // (v) is the field volatile? 189 is_vfinal_shift = 20, // (vf) did the call resolve to a final method? 190 indy_resolution_failed_shift= 19, // (indy_rf) did call site specifier resolution fail ? 191 // low order bits give field index (for FieldInfo) or method parameter size: 192 field_index_bits = 16, 193 field_index_mask = right_n_bits(field_index_bits), 194 parameter_size_bits = 8, // subset of field_index_mask, range is 0..255 195 parameter_size_mask = right_n_bits(parameter_size_bits), 196 option_bits_mask = ~(((~0u) << tos_state_shift) | (field_index_mask | parameter_size_mask)) 197 }; 198 199 // specific bit definitions for the indices field: 200 enum { 201 cp_index_bits = 2*BitsPerByte, 202 cp_index_mask = right_n_bits(cp_index_bits), 203 bytecode_1_shift = cp_index_bits, 204 bytecode_1_mask = right_n_bits(BitsPerByte), // == (u1)0xFF 205 bytecode_2_shift = cp_index_bits + BitsPerByte, 206 bytecode_2_mask = right_n_bits(BitsPerByte) // == (u1)0xFF 207 }; 208 209 210 // Initialization 211 void initialize_entry(int original_index); // initialize primary entry 212 void initialize_resolved_reference_index(int ref_index) { 213 assert(_f2 == 0, "set once"); // note: ref_index might be zero also 214 _f2 = ref_index; 215 } 216 217 void set_field( // sets entry to resolved field state 218 Bytecodes::Code get_code, // the bytecode used for reading the field 219 Bytecodes::Code put_code, // the bytecode used for writing the field 220 Klass* field_holder, // the object/klass holding the field 221 int orig_field_index, // the original field index in the field holder 222 int field_offset, // the field offset in words in the field holder 223 TosState field_type, // the (machine) field type 224 bool is_final, // the field is final 225 bool is_volatile, // the field is volatile 226 Klass* root_klass // needed by the GC to dirty the klass 227 ); 228 229 private: 230 void set_direct_or_vtable_call( 231 Bytecodes::Code invoke_code, // the bytecode used for invoking the method 232 const methodHandle& method, // the method/prototype if any (NULL, otherwise) 233 int vtable_index, // the vtable index if any, else negative 234 bool sender_is_interface 235 ); 236 237 public: 238 void set_direct_call( // sets entry to exact concrete method entry 239 Bytecodes::Code invoke_code, // the bytecode used for invoking the method 240 const methodHandle& method, // the method to call 241 bool sender_is_interface 242 ); 243 244 void set_vtable_call( // sets entry to vtable index 245 Bytecodes::Code invoke_code, // the bytecode used for invoking the method 246 const methodHandle& method, // resolved method which declares the vtable index 247 int vtable_index // the vtable index 248 ); 249 250 void set_itable_call( 251 Bytecodes::Code invoke_code, // the bytecode used; must be invokeinterface 252 Klass* referenced_klass, // the referenced klass in the InterfaceMethodref 253 const methodHandle& method, // the resolved interface method 254 int itable_index // index into itable for the method 255 ); 256 257 void set_method_handle( 258 const constantPoolHandle& cpool, // holding constant pool (required for locking) 259 const CallInfo &call_info // Call link information 260 ); 261 262 void set_dynamic_call( 263 const constantPoolHandle& cpool, // holding constant pool (required for locking) 264 const CallInfo &call_info // Call link information 265 ); 266 267 // Common code for invokedynamic and MH invocations. 268 269 // The "appendix" is an optional call-site-specific parameter which is 270 // pushed by the JVM at the end of the argument list. This argument may 271 // be a MethodType for the MH.invokes and a CallSite for an invokedynamic 272 // instruction. However, its exact type and use depends on the Java upcall, 273 // which simply returns a compiled LambdaForm along with any reference 274 // that LambdaForm needs to complete the call. If the upcall returns a 275 // null appendix, the argument is not passed at all. 276 // 277 // The appendix is *not* represented in the signature of the symbolic 278 // reference for the call site, but (if present) it *is* represented in 279 // the Method* bound to the site. This means that static and dynamic 280 // resolution logic needs to make slightly different assessments about the 281 // number and types of arguments. 282 void set_method_handle_common( 283 const constantPoolHandle& cpool, // holding constant pool (required for locking) 284 Bytecodes::Code invoke_code, // _invokehandle or _invokedynamic 285 const CallInfo &call_info // Call link information 286 ); 287 288 // Return TRUE if resolution failed and this thread got to record the failure 289 // status. Return FALSE if another thread succeeded or failed in resolving 290 // the method and recorded the success or failure before this thread had a 291 // chance to record its failure. 292 bool save_and_throw_indy_exc(const constantPoolHandle& cpool, int cpool_index, 293 int index, constantTag tag, TRAPS); 294 295 // invokedynamic and invokehandle call sites have two entries in the 296 // resolved references array: 297 // appendix (at index+0) 298 // MethodType (at index+1) 299 enum { 300 _indy_resolved_references_appendix_offset = 0, 301 _indy_resolved_references_method_type_offset = 1, 302 _indy_resolved_references_entries 303 }; 304 305 Method* method_if_resolved(const constantPoolHandle& cpool); 306 oop appendix_if_resolved(const constantPoolHandle& cpool); 307 oop method_type_if_resolved(const constantPoolHandle& cpool); 308 309 void set_parameter_size(int value); 310 311 // Which bytecode number (1 or 2) in the index field is valid for this bytecode? 312 // Returns -1 if neither is valid. 313 static int bytecode_number(Bytecodes::Code code) { 314 switch (code) { 315 case Bytecodes::_getstatic : // fall through 316 case Bytecodes::_getfield : // fall through 317 case Bytecodes::_invokespecial : // fall through 318 case Bytecodes::_invokestatic : // fall through 319 case Bytecodes::_invokehandle : // fall through 320 case Bytecodes::_invokedynamic : // fall through 321 case Bytecodes::_invokeinterface : return 1; 322 case Bytecodes::_putstatic : // fall through 323 case Bytecodes::_putfield : // fall through 324 case Bytecodes::_invokevirtual : return 2; 325 default : break; 326 } 327 return -1; 328 } 329 330 // Has this bytecode been resolved? Only valid for invokes and get/put field/static. 331 bool is_resolved(Bytecodes::Code code) const { 332 switch (bytecode_number(code)) { 333 case 1: return (bytecode_1() == code); 334 case 2: return (bytecode_2() == code); 335 } 336 return false; // default: not resolved 337 } 338 339 // Accessors 340 int indices() const { return _indices; } 341 int indices_ord() const { return OrderAccess::load_acquire(&_indices); } 342 int constant_pool_index() const { return (indices() & cp_index_mask); } 343 Bytecodes::Code bytecode_1() const { return Bytecodes::cast((indices_ord() >> bytecode_1_shift) & bytecode_1_mask); } 344 Bytecodes::Code bytecode_2() const { return Bytecodes::cast((indices_ord() >> bytecode_2_shift) & bytecode_2_mask); } 345 Metadata* f1_ord() const { return (Metadata *)OrderAccess::load_acquire(&_f1); } 346 Method* f1_as_method() const { Metadata* f1 = f1_ord(); assert(f1 == NULL || f1->is_method(), ""); return (Method*)f1; } 347 Klass* f1_as_klass() const { Metadata* f1 = f1_ord(); assert(f1 == NULL || f1->is_klass(), ""); return (Klass*)f1; } 348 // Use the accessor f1() to acquire _f1's value. This is needed for 349 // example in BytecodeInterpreter::run(), where is_f1_null() is 350 // called to check if an invokedynamic call is resolved. This load 351 // of _f1 must be ordered with the loads performed by 352 // cache->main_entry_index(). 353 bool is_f1_null() const { Metadata* f1 = f1_ord(); return f1 == NULL; } // classifies a CPC entry as unbound 354 int f2_as_index() const { assert(!is_vfinal(), ""); return (int) _f2; } 355 Method* f2_as_vfinal_method() const { assert(is_vfinal(), ""); return (Method*)_f2; } 356 Method* f2_as_interface_method() const { assert(bytecode_1() == Bytecodes::_invokeinterface, ""); return (Method*)_f2; } 357 intx flags_ord() const { return (intx)OrderAccess::load_acquire(&_flags); } 358 int field_index() const { assert(is_field_entry(), ""); return (_flags & field_index_mask); } 359 int parameter_size() const { assert(is_method_entry(), ""); return (_flags & parameter_size_mask); } 360 bool is_volatile() const { return (_flags & (1 << is_volatile_shift)) != 0; } 361 bool is_final() const { return (_flags & (1 << is_final_shift)) != 0; } 362 bool is_forced_virtual() const { return (_flags & (1 << is_forced_virtual_shift)) != 0; } 363 bool is_vfinal() const { return (_flags & (1 << is_vfinal_shift)) != 0; } 364 bool indy_resolution_failed() const { intx flags = flags_ord(); return (flags & (1 << indy_resolution_failed_shift)) != 0; } 365 bool has_appendix() const { return (!is_f1_null()) && (_flags & (1 << has_appendix_shift)) != 0; } 366 bool has_method_type() const { return (!is_f1_null()) && (_flags & (1 << has_method_type_shift)) != 0; } 367 bool is_method_entry() const { return (_flags & (1 << is_field_entry_shift)) == 0; } 368 bool is_field_entry() const { return (_flags & (1 << is_field_entry_shift)) != 0; } 369 bool is_long() const { return flag_state() == ltos; } 370 bool is_double() const { return flag_state() == dtos; } 371 TosState flag_state() const { assert((uint)number_of_states <= (uint)tos_state_mask+1, ""); 372 return (TosState)((_flags >> tos_state_shift) & tos_state_mask); } 373 void set_indy_resolution_failed(); 374 375 // Code generation support 376 static WordSize size() { 377 return in_WordSize(align_up((int)sizeof(ConstantPoolCacheEntry), wordSize) / wordSize); 378 } 379 static ByteSize size_in_bytes() { return in_ByteSize(sizeof(ConstantPoolCacheEntry)); } 380 static ByteSize indices_offset() { return byte_offset_of(ConstantPoolCacheEntry, _indices); } 381 static ByteSize f1_offset() { return byte_offset_of(ConstantPoolCacheEntry, _f1); } 382 static ByteSize f2_offset() { return byte_offset_of(ConstantPoolCacheEntry, _f2); } 383 static ByteSize flags_offset() { return byte_offset_of(ConstantPoolCacheEntry, _flags); } 384 385 #if INCLUDE_JVMTI 386 // RedefineClasses() API support: 387 // If this ConstantPoolCacheEntry refers to old_method then update it 388 // to refer to new_method. 389 // trace_name_printed is set to true if the current call has 390 // printed the klass name so that other routines in the adjust_* 391 // group don't print the klass name. 392 void adjust_method_entry(Method* old_method, Method* new_method, 393 bool* trace_name_printed); 394 bool check_no_old_or_obsolete_entries(); 395 Method* get_interesting_method_entry(Klass* k); 396 #endif // INCLUDE_JVMTI 397 398 // Debugging & Printing 399 void print (outputStream* st, int index) const; 400 void verify(outputStream* st) const; 401 402 static void verify_tos_state_shift() { 403 // When shifting flags as a 32-bit int, make sure we don't need an extra mask for tos_state: 404 assert((((u4)-1 >> tos_state_shift) & ~tos_state_mask) == 0, "no need for tos_state mask"); 405 } 406 407 void verify_just_initialized(bool f2_used); 408 void reinitialize(bool f2_used); 409 }; 410 411 412 // A constant pool cache is a runtime data structure set aside to a constant pool. The cache 413 // holds interpreter runtime information for all field access and invoke bytecodes. The cache 414 // is created and initialized before a class is actively used (i.e., initialized), the indivi- 415 // dual cache entries are filled at resolution (i.e., "link") time (see also: rewriter.*). 416 417 class ConstantPoolCache: public MetaspaceObj { 418 friend class VMStructs; 419 friend class MetadataFactory; 420 private: 421 // If you add a new field that points to any metaspace object, you 422 // must add this field to ConstantPoolCache::metaspace_pointers_do(). 423 int _length; 424 ConstantPool* _constant_pool; // the corresponding constant pool 425 426 // The following fields need to be modified at runtime, so they cannot be 427 // stored in the ConstantPool, which is read-only. 428 // Array of resolved objects from the constant pool and map from resolved 429 // object index to original constant pool index 430 OopHandle _resolved_references; 431 Array<u2>* _reference_map; 432 // The narrowOop pointer to the archived resolved_references. Set at CDS dump 433 // time when caching java heap object is supported. 434 CDS_JAVA_HEAP_ONLY(narrowOop _archived_references;) 435 436 // Sizing 437 debug_only(friend class ClassVerifier;) 438 439 // Constructor 440 ConstantPoolCache(int length, 441 const intStack& inverse_index_map, 442 const intStack& invokedynamic_inverse_index_map, 443 const intStack& invokedynamic_references_map) : 444 _length(length), 445 _constant_pool(NULL) { 446 CDS_JAVA_HEAP_ONLY(_archived_references = 0;) 447 initialize(inverse_index_map, invokedynamic_inverse_index_map, 448 invokedynamic_references_map); 449 for (int i = 0; i < length; i++) { 450 assert(entry_at(i)->is_f1_null(), "Failed to clear?"); 451 } 452 } 453 454 // Initialization 455 void initialize(const intArray& inverse_index_map, 456 const intArray& invokedynamic_inverse_index_map, 457 const intArray& invokedynamic_references_map); 458 public: 459 static ConstantPoolCache* allocate(ClassLoaderData* loader_data, 460 const intStack& cp_cache_map, 461 const intStack& invokedynamic_cp_cache_map, 462 const intStack& invokedynamic_references_map, TRAPS); 463 bool is_constantPoolCache() const { return true; } 464 465 int length() const { return _length; } 466 void metaspace_pointers_do(MetaspaceClosure* it); 467 MetaspaceObj::Type type() const { return ConstantPoolCacheType; } 468 469 oop archived_references() NOT_CDS_JAVA_HEAP_RETURN_(NULL); 470 void set_archived_references(oop o) NOT_CDS_JAVA_HEAP_RETURN; 471 472 oop resolved_references() { return _resolved_references.resolve(); } 473 void set_resolved_references(OopHandle s) { _resolved_references = s; } 474 Array<u2>* reference_map() const { return _reference_map; } 475 void set_reference_map(Array<u2>* o) { _reference_map = o; } 476 477 // Assembly code support 478 static int resolved_references_offset_in_bytes() { return offset_of(ConstantPoolCache, _resolved_references); } 479 480 // CDS support 481 void remove_unshareable_info(); 482 void verify_just_initialized(); 483 private: 484 void walk_entries_for_initialization(bool check_only); 485 void set_length(int length) { _length = length; } 486 487 static int header_size() { return sizeof(ConstantPoolCache) / wordSize; } 488 static int size(int length) { return align_metadata_size(header_size() + length * in_words(ConstantPoolCacheEntry::size())); } 489 public: 490 int size() const { return size(length()); } 491 private: 492 493 // Helpers 494 ConstantPool** constant_pool_addr() { return &_constant_pool; } 495 ConstantPoolCacheEntry* base() const { return (ConstantPoolCacheEntry*)((address)this + in_bytes(base_offset())); } 496 497 friend class constantPoolCacheKlass; 498 friend class ConstantPoolCacheEntry; 499 500 public: 501 // Accessors 502 void set_constant_pool(ConstantPool* pool) { _constant_pool = pool; } 503 ConstantPool* constant_pool() const { return _constant_pool; } 504 // Fetches the entry at the given index. 505 // In either case the index must not be encoded or byte-swapped in any way. 506 ConstantPoolCacheEntry* entry_at(int i) const { 507 assert(0 <= i && i < length(), "index out of bounds"); 508 return base() + i; 509 } 510 511 // Code generation 512 static ByteSize base_offset() { return in_ByteSize(sizeof(ConstantPoolCache)); } 513 static ByteSize entry_offset(int raw_index) { 514 int index = raw_index; 515 return (base_offset() + ConstantPoolCacheEntry::size_in_bytes() * index); 516 } 517 518 #if INCLUDE_JVMTI 519 // RedefineClasses() API support: 520 // If any entry of this ConstantPoolCache points to any of 521 // old_methods, replace it with the corresponding new_method. 522 // trace_name_printed is set to true if the current call has 523 // printed the klass name so that other routines in the adjust_* 524 // group don't print the klass name. 525 void adjust_method_entries(InstanceKlass* holder, bool* trace_name_printed); 526 bool check_no_old_or_obsolete_entries(); 527 void dump_cache(); 528 #endif // INCLUDE_JVMTI 529 530 // RedefineClasses support 531 DEBUG_ONLY(bool on_stack() { return false; }) 532 void deallocate_contents(ClassLoaderData* data); 533 bool is_klass() const { return false; } 534 535 // Printing 536 void print_on(outputStream* st) const; 537 void print_value_on(outputStream* st) const; 538 539 const char* internal_name() const { return "{constant pool cache}"; } 540 541 // Verify 542 void verify_on(outputStream* st); 543 }; 544 545 #endif // SHARE_VM_OOPS_CPCACHEOOP_HPP