1 /* 2 * Copyright (c) 2000, 2013, 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/systemDictionary.hpp" 27 #include "interpreter/bytecode.hpp" 28 #include "interpreter/bytecodeStream.hpp" 29 #include "interpreter/linkResolver.hpp" 30 #include "memory/heapInspection.hpp" 31 #include "oops/methodData.hpp" 32 #include "prims/jvmtiRedefineClasses.hpp" 33 #include "runtime/compilationPolicy.hpp" 34 #include "runtime/deoptimization.hpp" 35 #include "runtime/handles.inline.hpp" 36 37 // ================================================================== 38 // DataLayout 39 // 40 // Overlay for generic profiling data. 41 42 // Some types of data layouts need a length field. 43 bool DataLayout::needs_array_len(u1 tag) { 44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag); 45 } 46 47 // Perform generic initialization of the data. More specific 48 // initialization occurs in overrides of ProfileData::post_initialize. 49 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { 50 _header._bits = (intptr_t)0; 51 _header._struct._tag = tag; 52 _header._struct._bci = bci; 53 for (int i = 0; i < cell_count; i++) { 54 set_cell_at(i, (intptr_t)0); 55 } 56 if (needs_array_len(tag)) { 57 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. 58 } 59 if (tag == call_type_data_tag) { 60 CallTypeData::initialize(this, cell_count); 61 } else if (tag == virtual_call_type_data_tag) { 62 VirtualCallTypeData::initialize(this, cell_count); 63 } 64 } 65 66 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) { 67 ResourceMark m; 68 data_in()->clean_weak_klass_links(cl); 69 } 70 71 72 // ================================================================== 73 // ProfileData 74 // 75 // A ProfileData object is created to refer to a section of profiling 76 // data in a structured way. 77 78 // Constructor for invalid ProfileData. 79 ProfileData::ProfileData() { 80 _data = NULL; 81 } 82 83 #ifndef PRODUCT 84 void ProfileData::print_shared(outputStream* st, const char* name) const { 85 st->print("bci: %d", bci()); 86 st->fill_to(tab_width_one); 87 st->print("%s", name); 88 tab(st); 89 int trap = trap_state(); 90 if (trap != 0) { 91 char buf[100]; 92 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); 93 } 94 int flags = data()->flags(); 95 if (flags != 0) 96 st->print("flags(%d) ", flags); 97 } 98 99 void ProfileData::tab(outputStream* st, bool first) const { 100 st->fill_to(first ? tab_width_one : tab_width_two); 101 } 102 #endif // !PRODUCT 103 104 // ================================================================== 105 // BitData 106 // 107 // A BitData corresponds to a one-bit flag. This is used to indicate 108 // whether a checkcast bytecode has seen a null value. 109 110 111 #ifndef PRODUCT 112 void BitData::print_data_on(outputStream* st) const { 113 print_shared(st, "BitData"); 114 } 115 #endif // !PRODUCT 116 117 // ================================================================== 118 // CounterData 119 // 120 // A CounterData corresponds to a simple counter. 121 122 #ifndef PRODUCT 123 void CounterData::print_data_on(outputStream* st) const { 124 print_shared(st, "CounterData"); 125 st->print_cr("count(%u)", count()); 126 } 127 #endif // !PRODUCT 128 129 // ================================================================== 130 // JumpData 131 // 132 // A JumpData is used to access profiling information for a direct 133 // branch. It is a counter, used for counting the number of branches, 134 // plus a data displacement, used for realigning the data pointer to 135 // the corresponding target bci. 136 137 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 138 assert(stream->bci() == bci(), "wrong pos"); 139 int target; 140 Bytecodes::Code c = stream->code(); 141 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { 142 target = stream->dest_w(); 143 } else { 144 target = stream->dest(); 145 } 146 int my_di = mdo->dp_to_di(dp()); 147 int target_di = mdo->bci_to_di(target); 148 int offset = target_di - my_di; 149 set_displacement(offset); 150 } 151 152 #ifndef PRODUCT 153 void JumpData::print_data_on(outputStream* st) const { 154 print_shared(st, "JumpData"); 155 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); 156 } 157 #endif // !PRODUCT 158 159 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, bool include_receiver, int max) { 160 // Parameter profiling include the receiver 161 int args_count = include_receiver ? 1 : 0; 162 ResourceMark rm; 163 SignatureStream ss(signature); 164 args_count += ss.reference_parameter_count(); 165 args_count = MIN2(args_count, max); 166 return args_count * per_arg_cell_count; 167 } 168 169 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { 170 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); 171 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); 172 Bytecode_invoke inv(stream->method(), stream->bci()); 173 int args_cell = 0; 174 if (arguments_profiling_enabled()) { 175 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit); 176 } 177 int ret_cell = 0; 178 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { 179 ret_cell = ReturnTypeEntry::static_cell_count(); 180 } 181 int header_cell = 0; 182 if (args_cell + ret_cell > 0) { 183 header_cell = header_cell_count(); 184 } 185 186 return header_cell + args_cell + ret_cell; 187 } 188 189 class ArgumentOffsetComputer : public SignatureInfo { 190 private: 191 int _max; 192 GrowableArray<int> _offsets; 193 194 void set(int size, BasicType type) { _size += size; } 195 void do_object(int begin, int end) { 196 if (_offsets.length() < _max) { 197 _offsets.push(_size); 198 } 199 SignatureInfo::do_object(begin, end); 200 } 201 void do_array (int begin, int end) { 202 if (_offsets.length() < _max) { 203 _offsets.push(_size); 204 } 205 SignatureInfo::do_array(begin, end); 206 } 207 208 public: 209 ArgumentOffsetComputer(Symbol* signature, int max) 210 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { 211 } 212 213 int total() { lazy_iterate_parameters(); return _size; } 214 215 int off_at(int i) const { return _offsets.at(i); } 216 }; 217 218 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver, bool include_receiver) { 219 ResourceMark rm; 220 int start = 0; 221 // Parameter profiling include the receiver 222 if (include_receiver && has_receiver) { 223 set_stack_slot(0, 0); 224 set_type(0, type_none()); 225 start += 1; 226 } 227 ArgumentOffsetComputer aos(signature, _number_of_entries-start); 228 aos.total(); 229 for (int i = start; i < _number_of_entries; i++) { 230 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0)); 231 set_type(i, type_none()); 232 } 233 } 234 235 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 236 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); 237 Bytecode_invoke inv(stream->method(), stream->bci()); 238 239 SignatureStream ss(inv.signature()); 240 if (has_arguments()) { 241 #ifdef ASSERT 242 ResourceMark rm; 243 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); 244 assert(count > 0, "room for args type but none found?"); 245 check_number_of_arguments(count); 246 #endif 247 _args.post_initialize(inv.signature(), inv.has_receiver(), false); 248 } 249 250 if (has_return()) { 251 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); 252 _ret.post_initialize(); 253 } 254 } 255 256 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 257 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); 258 Bytecode_invoke inv(stream->method(), stream->bci()); 259 260 if (has_arguments()) { 261 #ifdef ASSERT 262 ResourceMark rm; 263 SignatureStream ss(inv.signature()); 264 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); 265 assert(count > 0, "room for args type but none found?"); 266 check_number_of_arguments(count); 267 #endif 268 _args.post_initialize(inv.signature(), inv.has_receiver(), false); 269 } 270 271 if (has_return()) { 272 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); 273 _ret.post_initialize(); 274 } 275 } 276 277 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { 278 Klass* k = (Klass*)klass_part(p); 279 return k != NULL && k->is_loader_alive(is_alive_cl); 280 } 281 282 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { 283 for (int i = 0; i < _number_of_entries; i++) { 284 intptr_t p = type(i); 285 if (!is_loader_alive(is_alive_cl, p)) { 286 set_type(i, with_status((Klass*)NULL, p)); 287 } 288 } 289 } 290 291 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { 292 intptr_t p = type(); 293 if (!is_loader_alive(is_alive_cl, p)) { 294 set_type(with_status((Klass*)NULL, p)); 295 } 296 } 297 298 bool TypeEntriesAtCall::return_profiling_enabled() { 299 return MethodData::profile_return(); 300 } 301 302 bool TypeEntriesAtCall::arguments_profiling_enabled() { 303 return MethodData::profile_arguments(); 304 } 305 306 #ifndef PRODUCT 307 void TypeEntries::print_klass(outputStream* st, intptr_t k) { 308 if (is_type_none(k)) { 309 st->print("none"); 310 } else if (is_type_unknown(k)) { 311 st->print("unknown"); 312 } else { 313 valid_klass(k)->print_value_on(st); 314 } 315 if (was_null_seen(k)) { 316 st->print(" (null seen)"); 317 } 318 } 319 320 void TypeStackSlotEntries::print_data_on(outputStream* st) const { 321 for (int i = 0; i < _number_of_entries; i++) { 322 _pd->tab(st); 323 st->print("%d: stack(%u) ", i, stack_slot(i)); 324 print_klass(st, type(i)); 325 st->cr(); 326 } 327 } 328 329 void ReturnTypeEntry::print_data_on(outputStream* st) const { 330 _pd->tab(st); 331 print_klass(st, type()); 332 st->cr(); 333 } 334 335 void CallTypeData::print_data_on(outputStream* st) const { 336 CounterData::print_data_on(st); 337 if (has_arguments()) { 338 tab(st, true); 339 st->print("argument types"); 340 _args.print_data_on(st); 341 } 342 if (has_return()) { 343 tab(st, true); 344 st->print("return type"); 345 _ret.print_data_on(st); 346 } 347 } 348 349 void VirtualCallTypeData::print_data_on(outputStream* st) const { 350 VirtualCallData::print_data_on(st); 351 if (has_arguments()) { 352 tab(st, true); 353 st->print("argument types"); 354 _args.print_data_on(st); 355 } 356 if (has_return()) { 357 tab(st, true); 358 st->print("return type"); 359 _ret.print_data_on(st); 360 } 361 } 362 #endif 363 364 // ================================================================== 365 // ReceiverTypeData 366 // 367 // A ReceiverTypeData is used to access profiling information about a 368 // dynamic type check. It consists of a counter which counts the total times 369 // that the check is reached, and a series of (Klass*, count) pairs 370 // which are used to store a type profile for the receiver of the check. 371 372 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { 373 for (uint row = 0; row < row_limit(); row++) { 374 Klass* p = receiver(row); 375 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { 376 clear_row(row); 377 } 378 } 379 } 380 381 #ifndef PRODUCT 382 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { 383 uint row; 384 int entries = 0; 385 for (row = 0; row < row_limit(); row++) { 386 if (receiver(row) != NULL) entries++; 387 } 388 st->print_cr("count(%u) entries(%u)", count(), entries); 389 int total = count(); 390 for (row = 0; row < row_limit(); row++) { 391 if (receiver(row) != NULL) { 392 total += receiver_count(row); 393 } 394 } 395 for (row = 0; row < row_limit(); row++) { 396 if (receiver(row) != NULL) { 397 tab(st); 398 receiver(row)->print_value_on(st); 399 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); 400 } 401 } 402 } 403 void ReceiverTypeData::print_data_on(outputStream* st) const { 404 print_shared(st, "ReceiverTypeData"); 405 print_receiver_data_on(st); 406 } 407 void VirtualCallData::print_data_on(outputStream* st) const { 408 print_shared(st, "VirtualCallData"); 409 print_receiver_data_on(st); 410 } 411 #endif // !PRODUCT 412 413 // ================================================================== 414 // RetData 415 // 416 // A RetData is used to access profiling information for a ret bytecode. 417 // It is composed of a count of the number of times that the ret has 418 // been executed, followed by a series of triples of the form 419 // (bci, count, di) which count the number of times that some bci was the 420 // target of the ret and cache a corresponding displacement. 421 422 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 423 for (uint row = 0; row < row_limit(); row++) { 424 set_bci_displacement(row, -1); 425 set_bci(row, no_bci); 426 } 427 // release so other threads see a consistent state. bci is used as 428 // a valid flag for bci_displacement. 429 OrderAccess::release(); 430 } 431 432 // This routine needs to atomically update the RetData structure, so the 433 // caller needs to hold the RetData_lock before it gets here. Since taking 434 // the lock can block (and allow GC) and since RetData is a ProfileData is a 435 // wrapper around a derived oop, taking the lock in _this_ method will 436 // basically cause the 'this' pointer's _data field to contain junk after the 437 // lock. We require the caller to take the lock before making the ProfileData 438 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret 439 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { 440 // First find the mdp which corresponds to the return bci. 441 address mdp = h_mdo->bci_to_dp(return_bci); 442 443 // Now check to see if any of the cache slots are open. 444 for (uint row = 0; row < row_limit(); row++) { 445 if (bci(row) == no_bci) { 446 set_bci_displacement(row, mdp - dp()); 447 set_bci_count(row, DataLayout::counter_increment); 448 // Barrier to ensure displacement is written before the bci; allows 449 // the interpreter to read displacement without fear of race condition. 450 release_set_bci(row, return_bci); 451 break; 452 } 453 } 454 return mdp; 455 } 456 457 458 #ifndef PRODUCT 459 void RetData::print_data_on(outputStream* st) const { 460 print_shared(st, "RetData"); 461 uint row; 462 int entries = 0; 463 for (row = 0; row < row_limit(); row++) { 464 if (bci(row) != no_bci) entries++; 465 } 466 st->print_cr("count(%u) entries(%u)", count(), entries); 467 for (row = 0; row < row_limit(); row++) { 468 if (bci(row) != no_bci) { 469 tab(st); 470 st->print_cr("bci(%d: count(%u) displacement(%d))", 471 bci(row), bci_count(row), bci_displacement(row)); 472 } 473 } 474 } 475 #endif // !PRODUCT 476 477 // ================================================================== 478 // BranchData 479 // 480 // A BranchData is used to access profiling data for a two-way branch. 481 // It consists of taken and not_taken counts as well as a data displacement 482 // for the taken case. 483 484 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 485 assert(stream->bci() == bci(), "wrong pos"); 486 int target = stream->dest(); 487 int my_di = mdo->dp_to_di(dp()); 488 int target_di = mdo->bci_to_di(target); 489 int offset = target_di - my_di; 490 set_displacement(offset); 491 } 492 493 #ifndef PRODUCT 494 void BranchData::print_data_on(outputStream* st) const { 495 print_shared(st, "BranchData"); 496 st->print_cr("taken(%u) displacement(%d)", 497 taken(), displacement()); 498 tab(st); 499 st->print_cr("not taken(%u)", not_taken()); 500 } 501 #endif 502 503 // ================================================================== 504 // MultiBranchData 505 // 506 // A MultiBranchData is used to access profiling information for 507 // a multi-way branch (*switch bytecodes). It consists of a series 508 // of (count, displacement) pairs, which count the number of times each 509 // case was taken and specify the data displacment for each branch target. 510 511 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { 512 int cell_count = 0; 513 if (stream->code() == Bytecodes::_tableswitch) { 514 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); 515 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default 516 } else { 517 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); 518 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default 519 } 520 return cell_count; 521 } 522 523 void MultiBranchData::post_initialize(BytecodeStream* stream, 524 MethodData* mdo) { 525 assert(stream->bci() == bci(), "wrong pos"); 526 int target; 527 int my_di; 528 int target_di; 529 int offset; 530 if (stream->code() == Bytecodes::_tableswitch) { 531 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); 532 int len = sw.length(); 533 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); 534 for (int count = 0; count < len; count++) { 535 target = sw.dest_offset_at(count) + bci(); 536 my_di = mdo->dp_to_di(dp()); 537 target_di = mdo->bci_to_di(target); 538 offset = target_di - my_di; 539 set_displacement_at(count, offset); 540 } 541 target = sw.default_offset() + bci(); 542 my_di = mdo->dp_to_di(dp()); 543 target_di = mdo->bci_to_di(target); 544 offset = target_di - my_di; 545 set_default_displacement(offset); 546 547 } else { 548 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); 549 int npairs = sw.number_of_pairs(); 550 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); 551 for (int count = 0; count < npairs; count++) { 552 LookupswitchPair pair = sw.pair_at(count); 553 target = pair.offset() + bci(); 554 my_di = mdo->dp_to_di(dp()); 555 target_di = mdo->bci_to_di(target); 556 offset = target_di - my_di; 557 set_displacement_at(count, offset); 558 } 559 target = sw.default_offset() + bci(); 560 my_di = mdo->dp_to_di(dp()); 561 target_di = mdo->bci_to_di(target); 562 offset = target_di - my_di; 563 set_default_displacement(offset); 564 } 565 } 566 567 #ifndef PRODUCT 568 void MultiBranchData::print_data_on(outputStream* st) const { 569 print_shared(st, "MultiBranchData"); 570 st->print_cr("default_count(%u) displacement(%d)", 571 default_count(), default_displacement()); 572 int cases = number_of_cases(); 573 for (int i = 0; i < cases; i++) { 574 tab(st); 575 st->print_cr("count(%u) displacement(%d)", 576 count_at(i), displacement_at(i)); 577 } 578 } 579 #endif 580 581 #ifndef PRODUCT 582 void ArgInfoData::print_data_on(outputStream* st) const { 583 print_shared(st, "ArgInfoData"); 584 int nargs = number_of_args(); 585 for (int i = 0; i < nargs; i++) { 586 st->print(" 0x%x", arg_modified(i)); 587 } 588 st->cr(); 589 } 590 591 #endif 592 593 int ParametersTypeData::compute_cell_count(Method* m) { 594 if (!MethodData::profile_parameters_for_method(m)) { 595 return 0; 596 } 597 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; 598 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); 599 if (obj_args > 0) { 600 return obj_args + 1; // 1 cell for array len 601 } 602 return 0; 603 } 604 605 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 606 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); 607 } 608 609 bool ParametersTypeData::profiling_enabled() { 610 return MethodData::profile_parameters(); 611 } 612 613 #ifndef PRODUCT 614 void ParametersTypeData::print_data_on(outputStream* st) const { 615 st->print("parameter types"); 616 _parameters.print_data_on(st); 617 } 618 #endif 619 620 // ================================================================== 621 // MethodData* 622 // 623 // A MethodData* holds information which has been collected about 624 // a method. 625 626 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { 627 int size = MethodData::compute_allocation_size_in_words(method); 628 629 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) 630 MethodData(method(), size, CHECK_NULL); 631 } 632 633 int MethodData::bytecode_cell_count(Bytecodes::Code code) { 634 #if defined(COMPILER1) && !defined(COMPILER2) 635 return no_profile_data; 636 #else 637 switch (code) { 638 case Bytecodes::_checkcast: 639 case Bytecodes::_instanceof: 640 case Bytecodes::_aastore: 641 if (TypeProfileCasts) { 642 return ReceiverTypeData::static_cell_count(); 643 } else { 644 return BitData::static_cell_count(); 645 } 646 case Bytecodes::_invokespecial: 647 case Bytecodes::_invokestatic: 648 if (MethodData::profile_arguments() || MethodData::profile_return()) { 649 return variable_cell_count; 650 } else { 651 return CounterData::static_cell_count(); 652 } 653 case Bytecodes::_goto: 654 case Bytecodes::_goto_w: 655 case Bytecodes::_jsr: 656 case Bytecodes::_jsr_w: 657 return JumpData::static_cell_count(); 658 case Bytecodes::_invokevirtual: 659 case Bytecodes::_invokeinterface: 660 if (MethodData::profile_arguments() || MethodData::profile_return()) { 661 return variable_cell_count; 662 } else { 663 return VirtualCallData::static_cell_count(); 664 } 665 case Bytecodes::_invokedynamic: 666 if (MethodData::profile_arguments() || MethodData::profile_return()) { 667 return variable_cell_count; 668 } else { 669 return CounterData::static_cell_count(); 670 } 671 case Bytecodes::_ret: 672 return RetData::static_cell_count(); 673 case Bytecodes::_ifeq: 674 case Bytecodes::_ifne: 675 case Bytecodes::_iflt: 676 case Bytecodes::_ifge: 677 case Bytecodes::_ifgt: 678 case Bytecodes::_ifle: 679 case Bytecodes::_if_icmpeq: 680 case Bytecodes::_if_icmpne: 681 case Bytecodes::_if_icmplt: 682 case Bytecodes::_if_icmpge: 683 case Bytecodes::_if_icmpgt: 684 case Bytecodes::_if_icmple: 685 case Bytecodes::_if_acmpeq: 686 case Bytecodes::_if_acmpne: 687 case Bytecodes::_ifnull: 688 case Bytecodes::_ifnonnull: 689 return BranchData::static_cell_count(); 690 case Bytecodes::_lookupswitch: 691 case Bytecodes::_tableswitch: 692 return variable_cell_count; 693 } 694 return no_profile_data; 695 #endif 696 } 697 698 // Compute the size of the profiling information corresponding to 699 // the current bytecode. 700 int MethodData::compute_data_size(BytecodeStream* stream) { 701 int cell_count = bytecode_cell_count(stream->code()); 702 if (cell_count == no_profile_data) { 703 return 0; 704 } 705 if (cell_count == variable_cell_count) { 706 switch (stream->code()) { 707 case Bytecodes::_lookupswitch: 708 case Bytecodes::_tableswitch: 709 cell_count = MultiBranchData::compute_cell_count(stream); 710 break; 711 case Bytecodes::_invokespecial: 712 case Bytecodes::_invokestatic: 713 case Bytecodes::_invokedynamic: 714 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); 715 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 716 profile_return_for_invoke(stream->method(), stream->bci())) { 717 cell_count = CallTypeData::compute_cell_count(stream); 718 } else { 719 cell_count = CounterData::static_cell_count(); 720 } 721 break; 722 case Bytecodes::_invokevirtual: 723 case Bytecodes::_invokeinterface: { 724 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); 725 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 726 profile_return_for_invoke(stream->method(), stream->bci())) { 727 cell_count = VirtualCallTypeData::compute_cell_count(stream); 728 } else { 729 cell_count = VirtualCallData::static_cell_count(); 730 } 731 break; 732 } 733 default: 734 fatal("unexpected bytecode for var length profile data"); 735 } 736 } 737 // Note: cell_count might be zero, meaning that there is just 738 // a DataLayout header, with no extra cells. 739 assert(cell_count >= 0, "sanity"); 740 return DataLayout::compute_size_in_bytes(cell_count); 741 } 742 743 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { 744 if (ProfileTraps) { 745 // Assume that up to 3% of BCIs with no MDP will need to allocate one. 746 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; 747 // If the method is large, let the extra BCIs grow numerous (to ~1%). 748 int one_percent_of_data 749 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); 750 if (extra_data_count < one_percent_of_data) 751 extra_data_count = one_percent_of_data; 752 if (extra_data_count > empty_bc_count) 753 extra_data_count = empty_bc_count; // no need for more 754 return extra_data_count; 755 } else { 756 return 0; 757 } 758 } 759 760 // Compute the size of the MethodData* necessary to store 761 // profiling information about a given method. Size is in bytes. 762 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { 763 int data_size = 0; 764 BytecodeStream stream(method); 765 Bytecodes::Code c; 766 int empty_bc_count = 0; // number of bytecodes lacking data 767 while ((c = stream.next()) >= 0) { 768 int size_in_bytes = compute_data_size(&stream); 769 data_size += size_in_bytes; 770 if (size_in_bytes == 0) empty_bc_count += 1; 771 } 772 int object_size = in_bytes(data_offset()) + data_size; 773 774 // Add some extra DataLayout cells (at least one) to track stray traps. 775 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); 776 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); 777 778 // Add a cell to record information about modified arguments. 779 int arg_size = method->size_of_parameters(); 780 object_size += DataLayout::compute_size_in_bytes(arg_size+1); 781 782 // Reserve room for an area of the MDO dedicated to profiling of 783 // parameters 784 int args_cell = ParametersTypeData::compute_cell_count(method()); 785 if (args_cell > 0) { 786 object_size += DataLayout::compute_size_in_bytes(args_cell); 787 } 788 return object_size; 789 } 790 791 // Compute the size of the MethodData* necessary to store 792 // profiling information about a given method. Size is in words 793 int MethodData::compute_allocation_size_in_words(methodHandle method) { 794 int byte_size = compute_allocation_size_in_bytes(method); 795 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; 796 return align_object_size(word_size); 797 } 798 799 // Initialize an individual data segment. Returns the size of 800 // the segment in bytes. 801 int MethodData::initialize_data(BytecodeStream* stream, 802 int data_index) { 803 #if defined(COMPILER1) && !defined(COMPILER2) 804 return 0; 805 #else 806 int cell_count = -1; 807 int tag = DataLayout::no_tag; 808 DataLayout* data_layout = data_layout_at(data_index); 809 Bytecodes::Code c = stream->code(); 810 switch (c) { 811 case Bytecodes::_checkcast: 812 case Bytecodes::_instanceof: 813 case Bytecodes::_aastore: 814 if (TypeProfileCasts) { 815 cell_count = ReceiverTypeData::static_cell_count(); 816 tag = DataLayout::receiver_type_data_tag; 817 } else { 818 cell_count = BitData::static_cell_count(); 819 tag = DataLayout::bit_data_tag; 820 } 821 break; 822 case Bytecodes::_invokespecial: 823 case Bytecodes::_invokestatic: { 824 int counter_data_cell_count = CounterData::static_cell_count(); 825 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 826 profile_return_for_invoke(stream->method(), stream->bci())) { 827 cell_count = CallTypeData::compute_cell_count(stream); 828 } else { 829 cell_count = counter_data_cell_count; 830 } 831 if (cell_count > counter_data_cell_count) { 832 tag = DataLayout::call_type_data_tag; 833 } else { 834 tag = DataLayout::counter_data_tag; 835 } 836 break; 837 } 838 case Bytecodes::_goto: 839 case Bytecodes::_goto_w: 840 case Bytecodes::_jsr: 841 case Bytecodes::_jsr_w: 842 cell_count = JumpData::static_cell_count(); 843 tag = DataLayout::jump_data_tag; 844 break; 845 case Bytecodes::_invokevirtual: 846 case Bytecodes::_invokeinterface: { 847 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); 848 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 849 profile_return_for_invoke(stream->method(), stream->bci())) { 850 cell_count = VirtualCallTypeData::compute_cell_count(stream); 851 } else { 852 cell_count = virtual_call_data_cell_count; 853 } 854 if (cell_count > virtual_call_data_cell_count) { 855 tag = DataLayout::virtual_call_type_data_tag; 856 } else { 857 tag = DataLayout::virtual_call_data_tag; 858 } 859 break; 860 } 861 case Bytecodes::_invokedynamic: { 862 // %%% should make a type profile for any invokedynamic that takes a ref argument 863 int counter_data_cell_count = CounterData::static_cell_count(); 864 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 865 profile_return_for_invoke(stream->method(), stream->bci())) { 866 cell_count = CallTypeData::compute_cell_count(stream); 867 } else { 868 cell_count = counter_data_cell_count; 869 } 870 if (cell_count > counter_data_cell_count) { 871 tag = DataLayout::call_type_data_tag; 872 } else { 873 tag = DataLayout::counter_data_tag; 874 } 875 break; 876 } 877 case Bytecodes::_ret: 878 cell_count = RetData::static_cell_count(); 879 tag = DataLayout::ret_data_tag; 880 break; 881 case Bytecodes::_ifeq: 882 case Bytecodes::_ifne: 883 case Bytecodes::_iflt: 884 case Bytecodes::_ifge: 885 case Bytecodes::_ifgt: 886 case Bytecodes::_ifle: 887 case Bytecodes::_if_icmpeq: 888 case Bytecodes::_if_icmpne: 889 case Bytecodes::_if_icmplt: 890 case Bytecodes::_if_icmpge: 891 case Bytecodes::_if_icmpgt: 892 case Bytecodes::_if_icmple: 893 case Bytecodes::_if_acmpeq: 894 case Bytecodes::_if_acmpne: 895 case Bytecodes::_ifnull: 896 case Bytecodes::_ifnonnull: 897 cell_count = BranchData::static_cell_count(); 898 tag = DataLayout::branch_data_tag; 899 break; 900 case Bytecodes::_lookupswitch: 901 case Bytecodes::_tableswitch: 902 cell_count = MultiBranchData::compute_cell_count(stream); 903 tag = DataLayout::multi_branch_data_tag; 904 break; 905 } 906 assert(tag == DataLayout::multi_branch_data_tag || 907 ((MethodData::profile_arguments() || MethodData::profile_return()) && 908 (tag == DataLayout::call_type_data_tag || 909 tag == DataLayout::counter_data_tag || 910 tag == DataLayout::virtual_call_type_data_tag || 911 tag == DataLayout::virtual_call_data_tag)) || 912 cell_count == bytecode_cell_count(c), "cell counts must agree"); 913 if (cell_count >= 0) { 914 assert(tag != DataLayout::no_tag, "bad tag"); 915 assert(bytecode_has_profile(c), "agree w/ BHP"); 916 data_layout->initialize(tag, stream->bci(), cell_count); 917 return DataLayout::compute_size_in_bytes(cell_count); 918 } else { 919 assert(!bytecode_has_profile(c), "agree w/ !BHP"); 920 return 0; 921 } 922 #endif 923 } 924 925 // Get the data at an arbitrary (sort of) data index. 926 ProfileData* MethodData::data_at(int data_index) const { 927 if (out_of_bounds(data_index)) { 928 return NULL; 929 } 930 DataLayout* data_layout = data_layout_at(data_index); 931 return data_layout->data_in(); 932 } 933 934 ProfileData* DataLayout::data_in() { 935 switch (tag()) { 936 case DataLayout::no_tag: 937 default: 938 ShouldNotReachHere(); 939 return NULL; 940 case DataLayout::bit_data_tag: 941 return new BitData(this); 942 case DataLayout::counter_data_tag: 943 return new CounterData(this); 944 case DataLayout::jump_data_tag: 945 return new JumpData(this); 946 case DataLayout::receiver_type_data_tag: 947 return new ReceiverTypeData(this); 948 case DataLayout::virtual_call_data_tag: 949 return new VirtualCallData(this); 950 case DataLayout::ret_data_tag: 951 return new RetData(this); 952 case DataLayout::branch_data_tag: 953 return new BranchData(this); 954 case DataLayout::multi_branch_data_tag: 955 return new MultiBranchData(this); 956 case DataLayout::arg_info_data_tag: 957 return new ArgInfoData(this); 958 case DataLayout::call_type_data_tag: 959 return new CallTypeData(this); 960 case DataLayout::virtual_call_type_data_tag: 961 return new VirtualCallTypeData(this); 962 case DataLayout::parameters_type_data_tag: 963 return new ParametersTypeData(this); 964 }; 965 } 966 967 // Iteration over data. 968 ProfileData* MethodData::next_data(ProfileData* current) const { 969 int current_index = dp_to_di(current->dp()); 970 int next_index = current_index + current->size_in_bytes(); 971 ProfileData* next = data_at(next_index); 972 return next; 973 } 974 975 // Give each of the data entries a chance to perform specific 976 // data initialization. 977 void MethodData::post_initialize(BytecodeStream* stream) { 978 ResourceMark rm; 979 ProfileData* data; 980 for (data = first_data(); is_valid(data); data = next_data(data)) { 981 stream->set_start(data->bci()); 982 stream->next(); 983 data->post_initialize(stream, this); 984 } 985 if (_parameters_type_data_di != -1) { 986 parameters_type_data()->post_initialize(NULL, this); 987 } 988 } 989 990 // Initialize the MethodData* corresponding to a given method. 991 MethodData::MethodData(methodHandle method, int size, TRAPS) { 992 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC 993 ResourceMark rm; 994 // Set the method back-pointer. 995 _method = method(); 996 997 init(); 998 set_creation_mileage(mileage_of(method())); 999 1000 // Go through the bytecodes and allocate and initialize the 1001 // corresponding data cells. 1002 int data_size = 0; 1003 int empty_bc_count = 0; // number of bytecodes lacking data 1004 _data[0] = 0; // apparently not set below. 1005 BytecodeStream stream(method); 1006 Bytecodes::Code c; 1007 while ((c = stream.next()) >= 0) { 1008 int size_in_bytes = initialize_data(&stream, data_size); 1009 data_size += size_in_bytes; 1010 if (size_in_bytes == 0) empty_bc_count += 1; 1011 } 1012 _data_size = data_size; 1013 int object_size = in_bytes(data_offset()) + data_size; 1014 1015 // Add some extra DataLayout cells (at least one) to track stray traps. 1016 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); 1017 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); 1018 1019 // Add a cell to record information about modified arguments. 1020 // Set up _args_modified array after traps cells so that 1021 // the code for traps cells works. 1022 DataLayout *dp = data_layout_at(data_size + extra_size); 1023 1024 int arg_size = method->size_of_parameters(); 1025 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); 1026 1027 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); 1028 object_size += extra_size + arg_data_size; 1029 1030 int args_cell = ParametersTypeData::compute_cell_count(method()); 1031 // If we are profiling parameters, we reserver an area near the end 1032 // of the MDO after the slots for bytecodes (because there's no bci 1033 // for method entry so they don't fit with the framework for the 1034 // profiling of bytecodes). We store the offset within the MDO of 1035 // this area (or -1 if no parameter is profiled) 1036 if (args_cell > 0) { 1037 object_size += DataLayout::compute_size_in_bytes(args_cell); 1038 _parameters_type_data_di = data_size + extra_size + arg_data_size; 1039 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); 1040 dp->initialize(DataLayout::parameters_type_data_tag, 0, args_cell); 1041 } else { 1042 _parameters_type_data_di = -1; 1043 } 1044 1045 // Set an initial hint. Don't use set_hint_di() because 1046 // first_di() may be out of bounds if data_size is 0. 1047 // In that situation, _hint_di is never used, but at 1048 // least well-defined. 1049 _hint_di = first_di(); 1050 1051 post_initialize(&stream); 1052 1053 set_size(object_size); 1054 } 1055 1056 void MethodData::init() { 1057 _invocation_counter.init(); 1058 _backedge_counter.init(); 1059 _invocation_counter_start = 0; 1060 _backedge_counter_start = 0; 1061 _num_loops = 0; 1062 _num_blocks = 0; 1063 _highest_comp_level = 0; 1064 _highest_osr_comp_level = 0; 1065 _would_profile = true; 1066 1067 // Initialize flags and trap history. 1068 _nof_decompiles = 0; 1069 _nof_overflow_recompiles = 0; 1070 _nof_overflow_traps = 0; 1071 clear_escape_info(); 1072 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); 1073 Copy::zero_to_words((HeapWord*) &_trap_hist, 1074 sizeof(_trap_hist) / sizeof(HeapWord)); 1075 } 1076 1077 // Get a measure of how much mileage the method has on it. 1078 int MethodData::mileage_of(Method* method) { 1079 int mileage = 0; 1080 if (TieredCompilation) { 1081 mileage = MAX2(method->invocation_count(), method->backedge_count()); 1082 } else { 1083 int iic = method->interpreter_invocation_count(); 1084 if (mileage < iic) mileage = iic; 1085 MethodCounters* mcs = method->method_counters(); 1086 if (mcs != NULL) { 1087 InvocationCounter* ic = mcs->invocation_counter(); 1088 InvocationCounter* bc = mcs->backedge_counter(); 1089 int icval = ic->count(); 1090 if (ic->carry()) icval += CompileThreshold; 1091 if (mileage < icval) mileage = icval; 1092 int bcval = bc->count(); 1093 if (bc->carry()) bcval += CompileThreshold; 1094 if (mileage < bcval) mileage = bcval; 1095 } 1096 } 1097 return mileage; 1098 } 1099 1100 bool MethodData::is_mature() const { 1101 return CompilationPolicy::policy()->is_mature(_method); 1102 } 1103 1104 // Translate a bci to its corresponding data index (di). 1105 address MethodData::bci_to_dp(int bci) { 1106 ResourceMark rm; 1107 ProfileData* data = data_before(bci); 1108 ProfileData* prev = NULL; 1109 for ( ; is_valid(data); data = next_data(data)) { 1110 if (data->bci() >= bci) { 1111 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); 1112 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); 1113 return data->dp(); 1114 } 1115 prev = data; 1116 } 1117 return (address)limit_data_position(); 1118 } 1119 1120 // Translate a bci to its corresponding data, or NULL. 1121 ProfileData* MethodData::bci_to_data(int bci) { 1122 ProfileData* data = data_before(bci); 1123 for ( ; is_valid(data); data = next_data(data)) { 1124 if (data->bci() == bci) { 1125 set_hint_di(dp_to_di(data->dp())); 1126 return data; 1127 } else if (data->bci() > bci) { 1128 break; 1129 } 1130 } 1131 return bci_to_extra_data(bci, false); 1132 } 1133 1134 // Translate a bci to its corresponding extra data, or NULL. 1135 ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { 1136 DataLayout* dp = extra_data_base(); 1137 DataLayout* end = extra_data_limit(); 1138 DataLayout* avail = NULL; 1139 for (; dp < end; dp = next_extra(dp)) { 1140 // No need for "OrderAccess::load_acquire" ops, 1141 // since the data structure is monotonic. 1142 if (dp->tag() == DataLayout::no_tag) break; 1143 if (dp->tag() == DataLayout::arg_info_data_tag) { 1144 dp = end; // ArgInfoData is at the end of extra data section. 1145 break; 1146 } 1147 if (dp->bci() == bci) { 1148 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); 1149 return new BitData(dp); 1150 } 1151 } 1152 if (create_if_missing && dp < end) { 1153 // Allocate this one. There is no mutual exclusion, 1154 // so two threads could allocate different BCIs to the 1155 // same data layout. This means these extra data 1156 // records, like most other MDO contents, must not be 1157 // trusted too much. 1158 DataLayout temp; 1159 temp.initialize(DataLayout::bit_data_tag, bci, 0); 1160 dp->release_set_header(temp.header()); 1161 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); 1162 //NO: assert(dp->bci() == bci, "no concurrent allocation"); 1163 return new BitData(dp); 1164 } 1165 return NULL; 1166 } 1167 1168 ArgInfoData *MethodData::arg_info() { 1169 DataLayout* dp = extra_data_base(); 1170 DataLayout* end = extra_data_limit(); 1171 for (; dp < end; dp = next_extra(dp)) { 1172 if (dp->tag() == DataLayout::arg_info_data_tag) 1173 return new ArgInfoData(dp); 1174 } 1175 return NULL; 1176 } 1177 1178 // Printing 1179 1180 #ifndef PRODUCT 1181 1182 void MethodData::print_on(outputStream* st) const { 1183 assert(is_methodData(), "should be method data"); 1184 st->print("method data for "); 1185 method()->print_value_on(st); 1186 st->cr(); 1187 print_data_on(st); 1188 } 1189 1190 #endif //PRODUCT 1191 1192 void MethodData::print_value_on(outputStream* st) const { 1193 assert(is_methodData(), "should be method data"); 1194 st->print("method data for "); 1195 method()->print_value_on(st); 1196 } 1197 1198 #ifndef PRODUCT 1199 void MethodData::print_data_on(outputStream* st) const { 1200 ResourceMark rm; 1201 ProfileData* data = first_data(); 1202 if (_parameters_type_data_di != -1) { 1203 parameters_type_data()->print_data_on(st); 1204 } 1205 for ( ; is_valid(data); data = next_data(data)) { 1206 st->print("%d", dp_to_di(data->dp())); 1207 st->fill_to(6); 1208 data->print_data_on(st); 1209 } 1210 st->print_cr("--- Extra data:"); 1211 DataLayout* dp = extra_data_base(); 1212 DataLayout* end = extra_data_limit(); 1213 for (; dp < end; dp = next_extra(dp)) { 1214 // No need for "OrderAccess::load_acquire" ops, 1215 // since the data structure is monotonic. 1216 if (dp->tag() == DataLayout::no_tag) continue; 1217 if (dp->tag() == DataLayout::bit_data_tag) { 1218 data = new BitData(dp); 1219 } else { 1220 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); 1221 data = new ArgInfoData(dp); 1222 dp = end; // ArgInfoData is at the end of extra data section. 1223 } 1224 st->print("%d", dp_to_di(data->dp())); 1225 st->fill_to(6); 1226 data->print_data_on(st); 1227 } 1228 } 1229 #endif 1230 1231 #if INCLUDE_SERVICES 1232 // Size Statistics 1233 void MethodData::collect_statistics(KlassSizeStats *sz) const { 1234 int n = sz->count(this); 1235 sz->_method_data_bytes += n; 1236 sz->_method_all_bytes += n; 1237 sz->_rw_bytes += n; 1238 } 1239 #endif // INCLUDE_SERVICES 1240 1241 // Verification 1242 1243 void MethodData::verify_on(outputStream* st) { 1244 guarantee(is_methodData(), "object must be method data"); 1245 // guarantee(m->is_perm(), "should be in permspace"); 1246 this->verify_data_on(st); 1247 } 1248 1249 void MethodData::verify_data_on(outputStream* st) { 1250 NEEDS_CLEANUP; 1251 // not yet implemented. 1252 } 1253 1254 bool MethodData::profile_jsr292(methodHandle m, int bci) { 1255 if (m->is_compiled_lambda_form()) { 1256 return true; 1257 } 1258 1259 Bytecode_invoke inv(m , bci); 1260 return inv.is_invokedynamic() || inv.is_invokehandle(); 1261 } 1262 1263 int MethodData::profile_arguments_flag() { 1264 return TypeProfileLevel % 10; 1265 } 1266 1267 bool MethodData::profile_arguments() { 1268 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; 1269 } 1270 1271 bool MethodData::profile_arguments_jsr292_only() { 1272 return profile_arguments_flag() == type_profile_jsr292; 1273 } 1274 1275 bool MethodData::profile_all_arguments() { 1276 return profile_arguments_flag() == type_profile_all; 1277 } 1278 1279 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { 1280 if (!profile_arguments()) { 1281 return false; 1282 } 1283 1284 if (profile_all_arguments()) { 1285 return true; 1286 } 1287 1288 assert(profile_arguments_jsr292_only(), "inconsistent"); 1289 return profile_jsr292(m, bci); 1290 } 1291 1292 int MethodData::profile_return_flag() { 1293 return (TypeProfileLevel % 100) / 10; 1294 } 1295 1296 bool MethodData::profile_return() { 1297 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; 1298 } 1299 1300 bool MethodData::profile_return_jsr292_only() { 1301 return profile_return_flag() == type_profile_jsr292; 1302 } 1303 1304 bool MethodData::profile_all_return() { 1305 return profile_return_flag() == type_profile_all; 1306 } 1307 1308 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { 1309 if (!profile_return()) { 1310 return false; 1311 } 1312 1313 if (profile_all_return()) { 1314 return true; 1315 } 1316 1317 assert(profile_return_jsr292_only(), "inconsistent"); 1318 return profile_jsr292(m, bci); 1319 } 1320 1321 int MethodData::profile_parameters_flag() { 1322 return TypeProfileLevel / 100; 1323 } 1324 1325 bool MethodData::profile_parameters() { 1326 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; 1327 } 1328 1329 bool MethodData::profile_parameters_jsr292_only() { 1330 return profile_parameters_flag() == type_profile_jsr292; 1331 } 1332 1333 bool MethodData::profile_all_parameters() { 1334 return profile_parameters_flag() == type_profile_all; 1335 } 1336 1337 bool MethodData::profile_parameters_for_method(methodHandle m) { 1338 if (!profile_parameters()) { 1339 return false; 1340 } 1341 1342 if (profile_all_parameters()) { 1343 return true; 1344 } 1345 1346 assert(profile_parameters_jsr292_only(), "inconsistent"); 1347 return m->is_compiled_lambda_form(); 1348 }