1 /* 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 class AdapterHandlerEntry; 26 class vframeStream; 27 28 // Runtime is the base class for various runtime interfaces 29 // (InterpreterRuntime, CompilerRuntime, etc.). It provides 30 // shared functionality such as exception forwarding (C++ to 31 // Java exceptions), locking/unlocking mechanisms, statistical 32 // information, etc. 33 34 class SharedRuntime: AllStatic { 35 private: 36 static methodHandle resolve_sub_helper(JavaThread *thread, 37 bool is_virtual, 38 bool is_optimized, TRAPS); 39 40 // Shared stub locations 41 42 static RuntimeStub* _wrong_method_blob; 43 static RuntimeStub* _ic_miss_blob; 44 static RuntimeStub* _resolve_opt_virtual_call_blob; 45 static RuntimeStub* _resolve_virtual_call_blob; 46 static RuntimeStub* _resolve_static_call_blob; 47 48 static SafepointBlob* _polling_page_safepoint_handler_blob; 49 static SafepointBlob* _polling_page_return_handler_blob; 50 #ifdef COMPILER2 51 static ExceptionBlob* _exception_blob; 52 static UncommonTrapBlob* _uncommon_trap_blob; 53 #endif // COMPILER2 54 55 #ifndef PRODUCT 56 57 // Counters 58 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) 59 60 #endif // !PRODUCT 61 public: 62 63 // max bytes for each dtrace string parameter 64 enum { max_dtrace_string_size = 256 }; 65 66 // The following arithmetic routines are used on platforms that do 67 // not have machine instructions to implement their functionality. 68 // Do not remove these. 69 70 // long arithmetics 71 static jlong lmul(jlong y, jlong x); 72 static jlong ldiv(jlong y, jlong x); 73 static jlong lrem(jlong y, jlong x); 74 75 // float and double remainder 76 static jfloat frem(jfloat x, jfloat y); 77 static jdouble drem(jdouble x, jdouble y); 78 79 // float conversion (needs to set appropriate rounding mode) 80 static jint f2i (jfloat x); 81 static jlong f2l (jfloat x); 82 static jint d2i (jdouble x); 83 static jlong d2l (jdouble x); 84 static jfloat d2f (jdouble x); 85 static jfloat l2f (jlong x); 86 static jdouble l2d (jlong x); 87 88 // double trigonometrics and transcendentals 89 static jdouble dsin(jdouble x); 90 static jdouble dcos(jdouble x); 91 static jdouble dtan(jdouble x); 92 static jdouble dlog(jdouble x); 93 static jdouble dlog10(jdouble x); 94 static jdouble dexp(jdouble x); 95 static jdouble dpow(jdouble x, jdouble y); 96 97 98 // exception handling across interpreter/compiler boundaries 99 static address raw_exception_handler_for_return_address(address return_address); 100 static address exception_handler_for_return_address(address return_address); 101 102 #ifndef SERIALGC 103 // G1 write barriers 104 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); 105 static void g1_wb_post(void* card_addr, JavaThread* thread); 106 #endif // !SERIALGC 107 108 // exception handling and implicit exceptions 109 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, 110 bool force_unwind, bool top_frame_only); 111 enum ImplicitExceptionKind { 112 IMPLICIT_NULL, 113 IMPLICIT_DIVIDE_BY_ZERO, 114 STACK_OVERFLOW 115 }; 116 static void throw_AbstractMethodError(JavaThread* thread); 117 static void throw_IncompatibleClassChangeError(JavaThread* thread); 118 static void throw_ArithmeticException(JavaThread* thread); 119 static void throw_NullPointerException(JavaThread* thread); 120 static void throw_NullPointerException_at_call(JavaThread* thread); 121 static void throw_StackOverflowError(JavaThread* thread); 122 static address continuation_for_implicit_exception(JavaThread* thread, 123 address faulting_pc, 124 ImplicitExceptionKind exception_kind); 125 126 // Shared stub locations 127 static address get_poll_stub(address pc); 128 129 static address get_ic_miss_stub() { 130 assert(_ic_miss_blob!= NULL, "oops"); 131 return _ic_miss_blob->instructions_begin(); 132 } 133 134 static address get_handle_wrong_method_stub() { 135 assert(_wrong_method_blob!= NULL, "oops"); 136 return _wrong_method_blob->instructions_begin(); 137 } 138 139 #ifdef COMPILER2 140 static void generate_uncommon_trap_blob(void); 141 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } 142 #endif // COMPILER2 143 144 static address get_resolve_opt_virtual_call_stub(){ 145 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); 146 return _resolve_opt_virtual_call_blob->instructions_begin(); 147 } 148 static address get_resolve_virtual_call_stub() { 149 assert(_resolve_virtual_call_blob != NULL, "oops"); 150 return _resolve_virtual_call_blob->instructions_begin(); 151 } 152 static address get_resolve_static_call_stub() { 153 assert(_resolve_static_call_blob != NULL, "oops"); 154 return _resolve_static_call_blob->instructions_begin(); 155 } 156 157 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } 158 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } 159 160 // Counters 161 #ifndef PRODUCT 162 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } 163 #endif // PRODUCT 164 165 // Helper routine for full-speed JVMTI exception throwing support 166 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); 167 static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL); 168 169 // RedefineClasses() tracing support for obsolete method entry 170 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); 171 172 // To be used as the entry point for unresolved native methods. 173 static address native_method_throw_unsatisfied_link_error_entry(); 174 175 // bytecode tracing is only used by the TraceBytecodes 176 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; 177 178 // Used to back off a spin lock that is under heavy contention 179 static void yield_all(JavaThread* thread, int attempts = 0); 180 181 static oop retrieve_receiver( symbolHandle sig, frame caller ); 182 183 static void register_finalizer(JavaThread* thread, oopDesc* obj); 184 185 // dtrace notifications 186 static int dtrace_object_alloc(oopDesc* o); 187 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); 188 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); 189 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); 190 191 // Utility method for retrieving the Java thread id, returns 0 if the 192 // thread is not a well formed Java thread. 193 static jlong get_java_tid(Thread* thread); 194 195 196 // used by native wrappers to reenable yellow if overflow happened in native code 197 static void reguard_yellow_pages(); 198 199 /** 200 * Fill in the "X cannot be cast to a Y" message for ClassCastException 201 * 202 * @param thr the current thread 203 * @param name the name of the class of the object attempted to be cast 204 * @return the dynamically allocated exception message (must be freed 205 * by the caller using a resource mark) 206 * 207 * BCP must refer to the current 'checkcast' opcode for the frame 208 * on top of the stack. 209 * The caller (or one of it's callers) must use a ResourceMark 210 * in order to correctly free the result. 211 */ 212 static char* generate_class_cast_message(JavaThread* thr, const char* name); 213 214 /** 215 * Fill in the message for a WrongMethodTypeException 216 * 217 * @param thr the current thread 218 * @param mtype (optional) expected method type (or argument class) 219 * @param mhandle (optional) actual method handle (or argument) 220 * @return the dynamically allocated exception message 221 * 222 * BCP for the frame on top of the stack must refer to an 223 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. 224 * The caller (or one of its callers) must use a ResourceMark 225 * in order to correctly free the result. 226 */ 227 static char* generate_wrong_method_type_message(JavaThread* thr, 228 oopDesc* mtype = NULL, 229 oopDesc* mhandle = NULL); 230 231 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ 232 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, 233 oopDesc* mtype); 234 235 /** 236 * Fill in the "X cannot be cast to a Y" message for ClassCastException 237 * 238 * @param name the name of the class of the object attempted to be cast 239 * @param klass the name of the target klass attempt 240 * @param gripe the specific kind of problem being reported 241 * @return the dynamically allocated exception message (must be freed 242 * by the caller using a resource mark) 243 * 244 * This version does not require access the frame, so it can be called 245 * from interpreted code 246 * The caller (or one of it's callers) must use a ResourceMark 247 * in order to correctly free the result. 248 */ 249 static char* generate_class_cast_message(const char* name, const char* klass, 250 const char* gripe = " cannot be cast to "); 251 252 // Resolves a call site- may patch in the destination of the call into the 253 // compiled code. 254 static methodHandle resolve_helper(JavaThread *thread, 255 bool is_virtual, 256 bool is_optimized, TRAPS); 257 258 static void generate_stubs(void); 259 260 private: 261 // deopt blob 262 static void generate_deopt_blob(void); 263 static DeoptimizationBlob* _deopt_blob; 264 265 public: 266 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } 267 268 // Resets a call-site in compiled code so it will get resolved again. 269 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); 270 271 // In the code prolog, if the klass comparison fails, the inline cache 272 // misses and the call site is patched to megamorphic 273 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); 274 275 // Find the method that called us. 276 static methodHandle find_callee_method(JavaThread* thread, TRAPS); 277 278 279 private: 280 static Handle find_callee_info(JavaThread* thread, 281 Bytecodes::Code& bc, 282 CallInfo& callinfo, TRAPS); 283 static Handle find_callee_info_helper(JavaThread* thread, 284 vframeStream& vfst, 285 Bytecodes::Code& bc, 286 CallInfo& callinfo, TRAPS); 287 288 static address clean_virtual_call_entry(); 289 static address clean_opt_virtual_call_entry(); 290 static address clean_static_call_entry(); 291 292 public: 293 294 // Read the array of BasicTypes from a Java signature, and compute where 295 // compiled Java code would like to put the results. Values in reg_lo and 296 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are 297 // registers, those above refer to 4-byte stack slots. All stack slots are 298 // based off of the window top. SharedInfo::stack0 refers to the first usable 299 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word 300 // 4-bytes higher. So for sparc because the register window save area is at 301 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 302 // will be just above it. ( 303 // return value is the maximum number of VMReg stack slots the convention will use. 304 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); 305 306 // Ditto except for calling C 307 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); 308 309 // Generate I2C and C2I adapters. These adapters are simple argument marshalling 310 // blobs. Unlike adapters in the tiger and earlier releases the code in these 311 // blobs does not create a new frame and are therefore virtually invisible 312 // to the stack walking code. In general these blobs extend the callers stack 313 // as needed for the conversion of argument locations. 314 315 // When calling a c2i blob the code will always call the interpreter even if 316 // by the time we reach the blob there is compiled code available. This allows 317 // the blob to pass the incoming stack pointer (the sender sp) in a known 318 // location for the interpreter to record. This is used by the frame code 319 // to correct the sender code to match up with the stack pointer when the 320 // thread left the compiled code. In addition it allows the interpreter 321 // to remove the space the c2i adapter allocated to do it argument conversion. 322 323 // Although a c2i blob will always run interpreted even if compiled code is 324 // present if we see that compiled code is present the compiled call site 325 // will be patched/re-resolved so that later calls will run compiled. 326 327 // Aditionally a c2i blob need to have a unverified entry because it can be reached 328 // in situations where the call site is an inlined cache site and may go megamorphic. 329 330 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed 331 // that the interpreter before it does any call dispatch will record the current 332 // stack pointer in the interpreter frame. On return it will restore the stack 333 // pointer as needed. This means the i2c adapter code doesn't need any special 334 // handshaking path with compiled code to keep the stack walking correct. 335 336 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, 337 int total_args_passed, 338 int max_arg, 339 const BasicType *sig_bt, 340 const VMRegPair *regs); 341 342 // OSR support 343 344 // OSR_migration_begin will extract the jvm state from an interpreter 345 // frame (locals, monitors) and store the data in a piece of C heap 346 // storage. This then allows the interpreter frame to be removed from the 347 // stack and the OSR nmethod to be called. That method is called with a 348 // pointer to the C heap storage. This pointer is the return value from 349 // OSR_migration_begin. 350 351 static intptr_t* OSR_migration_begin( JavaThread *thread); 352 353 // OSR_migration_end is a trivial routine. It is called after the compiled 354 // method has extracted the jvm state from the C heap that OSR_migration_begin 355 // created. It's entire job is to simply free this storage. 356 static void OSR_migration_end ( intptr_t* buf); 357 358 // Convert a sig into a calling convention register layout 359 // and find interesting things about it. 360 static VMRegPair* find_callee_arguments(symbolOop sig, bool is_static, int *arg_size); 361 static VMReg name_for_receiver(); 362 363 // "Top of Stack" slots that may be unused by the calling convention but must 364 // otherwise be preserved. 365 // On Intel these are not necessary and the value can be zero. 366 // On Sparc this describes the words reserved for storing a register window 367 // when an interrupt occurs. 368 static uint out_preserve_stack_slots(); 369 370 // Save and restore a native result 371 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); 372 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); 373 374 // Generate a native wrapper for a given method. The method takes arguments 375 // in the Java compiled code convention, marshals them to the native 376 // convention (handlizes oops, etc), transitions to native, makes the call, 377 // returns to java state (possibly blocking), unhandlizes any result and 378 // returns. 379 static nmethod *generate_native_wrapper(MacroAssembler* masm, 380 methodHandle method, 381 int total_args_passed, 382 int max_arg, 383 BasicType *sig_bt, 384 VMRegPair *regs, 385 BasicType ret_type ); 386 387 #ifdef HAVE_DTRACE_H 388 // Generate a dtrace wrapper for a given method. The method takes arguments 389 // in the Java compiled code convention, marshals them to the native 390 // convention (handlizes oops, etc), transitions to native, makes the call, 391 // returns to java state (possibly blocking), unhandlizes any result and 392 // returns. 393 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, 394 methodHandle method); 395 396 // dtrace support to convert a Java string to utf8 397 static void get_utf(oopDesc* src, address dst); 398 #endif // def HAVE_DTRACE_H 399 400 // A compiled caller has just called the interpreter, but compiled code 401 // exists. Patch the caller so he no longer calls into the interpreter. 402 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); 403 404 // Slow-path Locking and Unlocking 405 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); 406 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); 407 408 // Resolving of calls 409 static address resolve_static_call_C (JavaThread *thread); 410 static address resolve_virtual_call_C (JavaThread *thread); 411 static address resolve_opt_virtual_call_C(JavaThread *thread); 412 413 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) 414 static void slow_arraycopy_C(oopDesc* src, jint src_pos, 415 oopDesc* dest, jint dest_pos, 416 jint length, JavaThread* thread); 417 418 // handle ic miss with caller being compiled code 419 // wrong method handling (inline cache misses, zombie methods) 420 static address handle_wrong_method(JavaThread* thread); 421 static address handle_wrong_method_ic_miss(JavaThread* thread); 422 423 #ifndef PRODUCT 424 425 // Collect and print inline cache miss statistics 426 private: 427 enum { maxICmiss_count = 100 }; 428 static int _ICmiss_index; // length of IC miss histogram 429 static int _ICmiss_count[maxICmiss_count]; // miss counts 430 static address _ICmiss_at[maxICmiss_count]; // miss addresses 431 static void trace_ic_miss(address at); 432 433 public: 434 static int _monitor_enter_ctr; // monitor enter slow 435 static int _monitor_exit_ctr; // monitor exit slow 436 static int _throw_null_ctr; // throwing a null-pointer exception 437 static int _ic_miss_ctr; // total # of IC misses 438 static int _wrong_method_ctr; 439 static int _resolve_static_ctr; 440 static int _resolve_virtual_ctr; 441 static int _resolve_opt_virtual_ctr; 442 static int _implicit_null_throws; 443 static int _implicit_div0_throws; 444 445 static int _jbyte_array_copy_ctr; // Slow-path byte array copy 446 static int _jshort_array_copy_ctr; // Slow-path short array copy 447 static int _jint_array_copy_ctr; // Slow-path int array copy 448 static int _jlong_array_copy_ctr; // Slow-path long array copy 449 static int _oop_array_copy_ctr; // Slow-path oop array copy 450 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast 451 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks 452 static int _generic_array_copy_ctr; // Slow-path includes type decoding 453 static int _slow_array_copy_ctr; // Slow-path failed out to a method call 454 455 static int _new_instance_ctr; // 'new' object requires GC 456 static int _new_array_ctr; // 'new' array requires GC 457 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; 458 static int _find_handler_ctr; // find exception handler 459 static int _rethrow_ctr; // rethrow exception 460 static int _mon_enter_stub_ctr; // monitor enter stub 461 static int _mon_exit_stub_ctr; // monitor exit stub 462 static int _mon_enter_ctr; // monitor enter slow 463 static int _mon_exit_ctr; // monitor exit slow 464 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check 465 466 // Statistics code 467 // stats for "normal" compiled calls (non-interface) 468 static int _nof_normal_calls; // total # of calls 469 static int _nof_optimized_calls; // total # of statically-bound calls 470 static int _nof_inlined_calls; // total # of inlined normal calls 471 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) 472 static int _nof_inlined_static_calls; // total # of inlined static calls 473 // stats for compiled interface calls 474 static int _nof_interface_calls; // total # of compiled calls 475 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls 476 static int _nof_inlined_interface_calls; // total # of inlined interface calls 477 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls 478 // stats for runtime exceptions 479 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining 480 481 public: // for compiler 482 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } 483 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } 484 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } 485 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } 486 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } 487 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } 488 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } 489 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } 490 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } 491 static void print_call_statistics(int comp_total); 492 static void print_statistics(); 493 static void print_ic_miss_histogram(); 494 495 #endif // PRODUCT 496 }; 497 498 499 // --------------------------------------------------------------------------- 500 // Implementation of AdapterHandlerLibrary 501 // 502 // This library manages argument marshaling adapters and native wrappers. 503 // There are 2 flavors of adapters: I2C and C2I. 504 // 505 // The I2C flavor takes a stock interpreted call setup, marshals the arguments 506 // for a Java-compiled call, and jumps to Rmethod-> code()-> 507 // instructions_begin(). It is broken to call it without an nmethod assigned. 508 // The usual behavior is to lift any register arguments up out of the stack 509 // and possibly re-pack the extra arguments to be contigious. I2C adapters 510 // will save what the interpreter's stack pointer will be after arguments are 511 // popped, then adjust the interpreter's frame size to force alignment and 512 // possibly to repack the arguments. After re-packing, it jumps to the 513 // compiled code start. There are no safepoints in this adapter code and a GC 514 // cannot happen while marshaling is in progress. 515 // 516 // The C2I flavor takes a stock compiled call setup plus the target method in 517 // Rmethod, marshals the arguments for an interpreted call and jumps to 518 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been 519 // setup. Compiled frames are fixed-size and the args are likely not in the 520 // right place. Hence all the args will likely be copied into the 521 // interpreter's frame, forcing that frame to grow. The compiled frame's 522 // outgoing stack args will be dead after the copy. 523 // 524 // Native wrappers, like adapters, marshal arguments. Unlike adapters they 525 // also perform an offical frame push & pop. They have a call to the native 526 // routine in their middles and end in a return (instead of ending in a jump). 527 // The native wrappers are stored in real nmethods instead of the BufferBlobs 528 // used by the adapters. The code generation happens here because it's very 529 // similar to what the adapters have to do. 530 531 class AdapterHandlerEntry : public CHeapObj { 532 private: 533 address _i2c_entry; 534 address _c2i_entry; 535 address _c2i_unverified_entry; 536 537 public: 538 539 // The name we give all buffer blobs 540 static const char* name; 541 542 AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry): 543 _i2c_entry(i2c_entry), 544 _c2i_entry(c2i_entry), 545 _c2i_unverified_entry(c2i_unverified_entry) { 546 } 547 548 address get_i2c_entry() { return _i2c_entry; } 549 address get_c2i_entry() { return _c2i_entry; } 550 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } 551 552 void relocate(address new_base); 553 #ifndef PRODUCT 554 void print(); 555 #endif /* PRODUCT */ 556 }; 557 558 class AdapterHandlerLibrary: public AllStatic { 559 private: 560 static u_char _buffer[]; // the temporary code buffer 561 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection 562 static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers 563 enum { 564 AbstractMethodHandler = 1 // special handler for abstract methods 565 }; 566 static void initialize(); 567 static int get_create_adapter_index(methodHandle method); 568 static address get_i2c_entry( int index ) { 569 return get_entry(index)->get_i2c_entry(); 570 } 571 static address get_c2i_entry( int index ) { 572 return get_entry(index)->get_c2i_entry(); 573 } 574 static address get_c2i_unverified_entry( int index ) { 575 return get_entry(index)->get_c2i_unverified_entry(); 576 } 577 578 public: 579 static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); } 580 static nmethod* create_native_wrapper(methodHandle method); 581 static AdapterHandlerEntry* get_adapter(methodHandle method) { 582 return get_entry(get_create_adapter_index(method)); 583 } 584 #ifdef HAVE_DTRACE_H 585 static nmethod* create_dtrace_nmethod (methodHandle method); 586 #endif // HAVE_DTRACE_H 587 588 #ifndef PRODUCT 589 static void print_handler(CodeBlob* b); 590 static bool contains(CodeBlob* b); 591 #endif /* PRODUCT */ 592 593 };