methodData.cpp revision 5976:2b8e28fdf503
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. 43bool 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. 49void 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 66void 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. 79ProfileData::ProfileData() { 80 _data = NULL; 81} 82 83#ifndef PRODUCT 84void 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 99void 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 112void 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 123void 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 137void 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 153void 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 159int 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 169int 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 189class ArgumentOffsetComputer : public SignatureInfo { 190private: 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 208public: 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 218void 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 235void 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 256void 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 277bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { 278 return !is_type_none(p) && 279 !((Klass*)klass_part(p))->is_loader_alive(is_alive_cl); 280} 281 282void 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, type_none()); 287 } 288 } 289} 290 291void 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(type_none()); 295 } 296} 297 298bool TypeEntriesAtCall::return_profiling_enabled() { 299 return MethodData::profile_return(); 300} 301 302bool TypeEntriesAtCall::arguments_profiling_enabled() { 303 return MethodData::profile_arguments(); 304} 305 306#ifndef PRODUCT 307void 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 320void 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 329void ReturnTypeEntry::print_data_on(outputStream* st) const { 330 _pd->tab(st); 331 print_klass(st, type()); 332 st->cr(); 333} 334 335void 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 349void 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 372void 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 382void 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} 403void ReceiverTypeData::print_data_on(outputStream* st) const { 404 print_shared(st, "ReceiverTypeData"); 405 print_receiver_data_on(st); 406} 407void 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 422void 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 439address 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#ifdef CC_INTERP 458DataLayout* RetData::advance(MethodData *md, int bci) { 459 return (DataLayout*) md->bci_to_dp(bci); 460} 461#endif // CC_INTERP 462 463#ifndef PRODUCT 464void RetData::print_data_on(outputStream* st) const { 465 print_shared(st, "RetData"); 466 uint row; 467 int entries = 0; 468 for (row = 0; row < row_limit(); row++) { 469 if (bci(row) != no_bci) entries++; 470 } 471 st->print_cr("count(%u) entries(%u)", count(), entries); 472 for (row = 0; row < row_limit(); row++) { 473 if (bci(row) != no_bci) { 474 tab(st); 475 st->print_cr("bci(%d: count(%u) displacement(%d))", 476 bci(row), bci_count(row), bci_displacement(row)); 477 } 478 } 479} 480#endif // !PRODUCT 481 482// ================================================================== 483// BranchData 484// 485// A BranchData is used to access profiling data for a two-way branch. 486// It consists of taken and not_taken counts as well as a data displacement 487// for the taken case. 488 489void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 490 assert(stream->bci() == bci(), "wrong pos"); 491 int target = stream->dest(); 492 int my_di = mdo->dp_to_di(dp()); 493 int target_di = mdo->bci_to_di(target); 494 int offset = target_di - my_di; 495 set_displacement(offset); 496} 497 498#ifndef PRODUCT 499void BranchData::print_data_on(outputStream* st) const { 500 print_shared(st, "BranchData"); 501 st->print_cr("taken(%u) displacement(%d)", 502 taken(), displacement()); 503 tab(st); 504 st->print_cr("not taken(%u)", not_taken()); 505} 506#endif 507 508// ================================================================== 509// MultiBranchData 510// 511// A MultiBranchData is used to access profiling information for 512// a multi-way branch (*switch bytecodes). It consists of a series 513// of (count, displacement) pairs, which count the number of times each 514// case was taken and specify the data displacment for each branch target. 515 516int MultiBranchData::compute_cell_count(BytecodeStream* stream) { 517 int cell_count = 0; 518 if (stream->code() == Bytecodes::_tableswitch) { 519 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); 520 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default 521 } else { 522 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); 523 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default 524 } 525 return cell_count; 526} 527 528void MultiBranchData::post_initialize(BytecodeStream* stream, 529 MethodData* mdo) { 530 assert(stream->bci() == bci(), "wrong pos"); 531 int target; 532 int my_di; 533 int target_di; 534 int offset; 535 if (stream->code() == Bytecodes::_tableswitch) { 536 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); 537 int len = sw.length(); 538 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); 539 for (int count = 0; count < len; count++) { 540 target = sw.dest_offset_at(count) + bci(); 541 my_di = mdo->dp_to_di(dp()); 542 target_di = mdo->bci_to_di(target); 543 offset = target_di - my_di; 544 set_displacement_at(count, offset); 545 } 546 target = sw.default_offset() + bci(); 547 my_di = mdo->dp_to_di(dp()); 548 target_di = mdo->bci_to_di(target); 549 offset = target_di - my_di; 550 set_default_displacement(offset); 551 552 } else { 553 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); 554 int npairs = sw.number_of_pairs(); 555 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); 556 for (int count = 0; count < npairs; count++) { 557 LookupswitchPair pair = sw.pair_at(count); 558 target = pair.offset() + bci(); 559 my_di = mdo->dp_to_di(dp()); 560 target_di = mdo->bci_to_di(target); 561 offset = target_di - my_di; 562 set_displacement_at(count, offset); 563 } 564 target = sw.default_offset() + bci(); 565 my_di = mdo->dp_to_di(dp()); 566 target_di = mdo->bci_to_di(target); 567 offset = target_di - my_di; 568 set_default_displacement(offset); 569 } 570} 571 572#ifndef PRODUCT 573void MultiBranchData::print_data_on(outputStream* st) const { 574 print_shared(st, "MultiBranchData"); 575 st->print_cr("default_count(%u) displacement(%d)", 576 default_count(), default_displacement()); 577 int cases = number_of_cases(); 578 for (int i = 0; i < cases; i++) { 579 tab(st); 580 st->print_cr("count(%u) displacement(%d)", 581 count_at(i), displacement_at(i)); 582 } 583} 584#endif 585 586#ifndef PRODUCT 587void ArgInfoData::print_data_on(outputStream* st) const { 588 print_shared(st, "ArgInfoData"); 589 int nargs = number_of_args(); 590 for (int i = 0; i < nargs; i++) { 591 st->print(" 0x%x", arg_modified(i)); 592 } 593 st->cr(); 594} 595 596#endif 597 598int ParametersTypeData::compute_cell_count(Method* m) { 599 if (!MethodData::profile_parameters_for_method(m)) { 600 return 0; 601 } 602 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; 603 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); 604 if (obj_args > 0) { 605 return obj_args + 1; // 1 cell for array len 606 } 607 return 0; 608} 609 610void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { 611 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); 612} 613 614bool ParametersTypeData::profiling_enabled() { 615 return MethodData::profile_parameters(); 616} 617 618#ifndef PRODUCT 619void ParametersTypeData::print_data_on(outputStream* st) const { 620 st->print("parameter types"); 621 _parameters.print_data_on(st); 622} 623#endif 624 625// ================================================================== 626// MethodData* 627// 628// A MethodData* holds information which has been collected about 629// a method. 630 631MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { 632 int size = MethodData::compute_allocation_size_in_words(method); 633 634 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) 635 MethodData(method(), size, CHECK_NULL); 636} 637 638int MethodData::bytecode_cell_count(Bytecodes::Code code) { 639#if defined(COMPILER1) && !defined(COMPILER2) 640 return no_profile_data; 641#else 642 switch (code) { 643 case Bytecodes::_checkcast: 644 case Bytecodes::_instanceof: 645 case Bytecodes::_aastore: 646 if (TypeProfileCasts) { 647 return ReceiverTypeData::static_cell_count(); 648 } else { 649 return BitData::static_cell_count(); 650 } 651 case Bytecodes::_invokespecial: 652 case Bytecodes::_invokestatic: 653 if (MethodData::profile_arguments() || MethodData::profile_return()) { 654 return variable_cell_count; 655 } else { 656 return CounterData::static_cell_count(); 657 } 658 case Bytecodes::_goto: 659 case Bytecodes::_goto_w: 660 case Bytecodes::_jsr: 661 case Bytecodes::_jsr_w: 662 return JumpData::static_cell_count(); 663 case Bytecodes::_invokevirtual: 664 case Bytecodes::_invokeinterface: 665 if (MethodData::profile_arguments() || MethodData::profile_return()) { 666 return variable_cell_count; 667 } else { 668 return VirtualCallData::static_cell_count(); 669 } 670 case Bytecodes::_invokedynamic: 671 if (MethodData::profile_arguments() || MethodData::profile_return()) { 672 return variable_cell_count; 673 } else { 674 return CounterData::static_cell_count(); 675 } 676 case Bytecodes::_ret: 677 return RetData::static_cell_count(); 678 case Bytecodes::_ifeq: 679 case Bytecodes::_ifne: 680 case Bytecodes::_iflt: 681 case Bytecodes::_ifge: 682 case Bytecodes::_ifgt: 683 case Bytecodes::_ifle: 684 case Bytecodes::_if_icmpeq: 685 case Bytecodes::_if_icmpne: 686 case Bytecodes::_if_icmplt: 687 case Bytecodes::_if_icmpge: 688 case Bytecodes::_if_icmpgt: 689 case Bytecodes::_if_icmple: 690 case Bytecodes::_if_acmpeq: 691 case Bytecodes::_if_acmpne: 692 case Bytecodes::_ifnull: 693 case Bytecodes::_ifnonnull: 694 return BranchData::static_cell_count(); 695 case Bytecodes::_lookupswitch: 696 case Bytecodes::_tableswitch: 697 return variable_cell_count; 698 } 699 return no_profile_data; 700#endif 701} 702 703// Compute the size of the profiling information corresponding to 704// the current bytecode. 705int MethodData::compute_data_size(BytecodeStream* stream) { 706 int cell_count = bytecode_cell_count(stream->code()); 707 if (cell_count == no_profile_data) { 708 return 0; 709 } 710 if (cell_count == variable_cell_count) { 711 switch (stream->code()) { 712 case Bytecodes::_lookupswitch: 713 case Bytecodes::_tableswitch: 714 cell_count = MultiBranchData::compute_cell_count(stream); 715 break; 716 case Bytecodes::_invokespecial: 717 case Bytecodes::_invokestatic: 718 case Bytecodes::_invokedynamic: 719 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); 720 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 721 profile_return_for_invoke(stream->method(), stream->bci())) { 722 cell_count = CallTypeData::compute_cell_count(stream); 723 } else { 724 cell_count = CounterData::static_cell_count(); 725 } 726 break; 727 case Bytecodes::_invokevirtual: 728 case Bytecodes::_invokeinterface: { 729 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); 730 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 731 profile_return_for_invoke(stream->method(), stream->bci())) { 732 cell_count = VirtualCallTypeData::compute_cell_count(stream); 733 } else { 734 cell_count = VirtualCallData::static_cell_count(); 735 } 736 break; 737 } 738 default: 739 fatal("unexpected bytecode for var length profile data"); 740 } 741 } 742 // Note: cell_count might be zero, meaning that there is just 743 // a DataLayout header, with no extra cells. 744 assert(cell_count >= 0, "sanity"); 745 return DataLayout::compute_size_in_bytes(cell_count); 746} 747 748int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { 749 if (ProfileTraps) { 750 // Assume that up to 3% of BCIs with no MDP will need to allocate one. 751 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; 752 // If the method is large, let the extra BCIs grow numerous (to ~1%). 753 int one_percent_of_data 754 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); 755 if (extra_data_count < one_percent_of_data) 756 extra_data_count = one_percent_of_data; 757 if (extra_data_count > empty_bc_count) 758 extra_data_count = empty_bc_count; // no need for more 759 return extra_data_count; 760 } else { 761 return 0; 762 } 763} 764 765// Compute the size of the MethodData* necessary to store 766// profiling information about a given method. Size is in bytes. 767int MethodData::compute_allocation_size_in_bytes(methodHandle method) { 768 int data_size = 0; 769 BytecodeStream stream(method); 770 Bytecodes::Code c; 771 int empty_bc_count = 0; // number of bytecodes lacking data 772 while ((c = stream.next()) >= 0) { 773 int size_in_bytes = compute_data_size(&stream); 774 data_size += size_in_bytes; 775 if (size_in_bytes == 0) empty_bc_count += 1; 776 } 777 int object_size = in_bytes(data_offset()) + data_size; 778 779 // Add some extra DataLayout cells (at least one) to track stray traps. 780 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); 781 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); 782 783 // Add a cell to record information about modified arguments. 784 int arg_size = method->size_of_parameters(); 785 object_size += DataLayout::compute_size_in_bytes(arg_size+1); 786 787 // Reserve room for an area of the MDO dedicated to profiling of 788 // parameters 789 int args_cell = ParametersTypeData::compute_cell_count(method()); 790 if (args_cell > 0) { 791 object_size += DataLayout::compute_size_in_bytes(args_cell); 792 } 793 return object_size; 794} 795 796// Compute the size of the MethodData* necessary to store 797// profiling information about a given method. Size is in words 798int MethodData::compute_allocation_size_in_words(methodHandle method) { 799 int byte_size = compute_allocation_size_in_bytes(method); 800 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; 801 return align_object_size(word_size); 802} 803 804// Initialize an individual data segment. Returns the size of 805// the segment in bytes. 806int MethodData::initialize_data(BytecodeStream* stream, 807 int data_index) { 808#if defined(COMPILER1) && !defined(COMPILER2) 809 return 0; 810#else 811 int cell_count = -1; 812 int tag = DataLayout::no_tag; 813 DataLayout* data_layout = data_layout_at(data_index); 814 Bytecodes::Code c = stream->code(); 815 switch (c) { 816 case Bytecodes::_checkcast: 817 case Bytecodes::_instanceof: 818 case Bytecodes::_aastore: 819 if (TypeProfileCasts) { 820 cell_count = ReceiverTypeData::static_cell_count(); 821 tag = DataLayout::receiver_type_data_tag; 822 } else { 823 cell_count = BitData::static_cell_count(); 824 tag = DataLayout::bit_data_tag; 825 } 826 break; 827 case Bytecodes::_invokespecial: 828 case Bytecodes::_invokestatic: { 829 int counter_data_cell_count = CounterData::static_cell_count(); 830 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 831 profile_return_for_invoke(stream->method(), stream->bci())) { 832 cell_count = CallTypeData::compute_cell_count(stream); 833 } else { 834 cell_count = counter_data_cell_count; 835 } 836 if (cell_count > counter_data_cell_count) { 837 tag = DataLayout::call_type_data_tag; 838 } else { 839 tag = DataLayout::counter_data_tag; 840 } 841 break; 842 } 843 case Bytecodes::_goto: 844 case Bytecodes::_goto_w: 845 case Bytecodes::_jsr: 846 case Bytecodes::_jsr_w: 847 cell_count = JumpData::static_cell_count(); 848 tag = DataLayout::jump_data_tag; 849 break; 850 case Bytecodes::_invokevirtual: 851 case Bytecodes::_invokeinterface: { 852 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); 853 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 854 profile_return_for_invoke(stream->method(), stream->bci())) { 855 cell_count = VirtualCallTypeData::compute_cell_count(stream); 856 } else { 857 cell_count = virtual_call_data_cell_count; 858 } 859 if (cell_count > virtual_call_data_cell_count) { 860 tag = DataLayout::virtual_call_type_data_tag; 861 } else { 862 tag = DataLayout::virtual_call_data_tag; 863 } 864 break; 865 } 866 case Bytecodes::_invokedynamic: { 867 // %%% should make a type profile for any invokedynamic that takes a ref argument 868 int counter_data_cell_count = CounterData::static_cell_count(); 869 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || 870 profile_return_for_invoke(stream->method(), stream->bci())) { 871 cell_count = CallTypeData::compute_cell_count(stream); 872 } else { 873 cell_count = counter_data_cell_count; 874 } 875 if (cell_count > counter_data_cell_count) { 876 tag = DataLayout::call_type_data_tag; 877 } else { 878 tag = DataLayout::counter_data_tag; 879 } 880 break; 881 } 882 case Bytecodes::_ret: 883 cell_count = RetData::static_cell_count(); 884 tag = DataLayout::ret_data_tag; 885 break; 886 case Bytecodes::_ifeq: 887 case Bytecodes::_ifne: 888 case Bytecodes::_iflt: 889 case Bytecodes::_ifge: 890 case Bytecodes::_ifgt: 891 case Bytecodes::_ifle: 892 case Bytecodes::_if_icmpeq: 893 case Bytecodes::_if_icmpne: 894 case Bytecodes::_if_icmplt: 895 case Bytecodes::_if_icmpge: 896 case Bytecodes::_if_icmpgt: 897 case Bytecodes::_if_icmple: 898 case Bytecodes::_if_acmpeq: 899 case Bytecodes::_if_acmpne: 900 case Bytecodes::_ifnull: 901 case Bytecodes::_ifnonnull: 902 cell_count = BranchData::static_cell_count(); 903 tag = DataLayout::branch_data_tag; 904 break; 905 case Bytecodes::_lookupswitch: 906 case Bytecodes::_tableswitch: 907 cell_count = MultiBranchData::compute_cell_count(stream); 908 tag = DataLayout::multi_branch_data_tag; 909 break; 910 } 911 assert(tag == DataLayout::multi_branch_data_tag || 912 ((MethodData::profile_arguments() || MethodData::profile_return()) && 913 (tag == DataLayout::call_type_data_tag || 914 tag == DataLayout::counter_data_tag || 915 tag == DataLayout::virtual_call_type_data_tag || 916 tag == DataLayout::virtual_call_data_tag)) || 917 cell_count == bytecode_cell_count(c), "cell counts must agree"); 918 if (cell_count >= 0) { 919 assert(tag != DataLayout::no_tag, "bad tag"); 920 assert(bytecode_has_profile(c), "agree w/ BHP"); 921 data_layout->initialize(tag, stream->bci(), cell_count); 922 return DataLayout::compute_size_in_bytes(cell_count); 923 } else { 924 assert(!bytecode_has_profile(c), "agree w/ !BHP"); 925 return 0; 926 } 927#endif 928} 929 930// Get the data at an arbitrary (sort of) data index. 931ProfileData* MethodData::data_at(int data_index) const { 932 if (out_of_bounds(data_index)) { 933 return NULL; 934 } 935 DataLayout* data_layout = data_layout_at(data_index); 936 return data_layout->data_in(); 937} 938 939ProfileData* DataLayout::data_in() { 940 switch (tag()) { 941 case DataLayout::no_tag: 942 default: 943 ShouldNotReachHere(); 944 return NULL; 945 case DataLayout::bit_data_tag: 946 return new BitData(this); 947 case DataLayout::counter_data_tag: 948 return new CounterData(this); 949 case DataLayout::jump_data_tag: 950 return new JumpData(this); 951 case DataLayout::receiver_type_data_tag: 952 return new ReceiverTypeData(this); 953 case DataLayout::virtual_call_data_tag: 954 return new VirtualCallData(this); 955 case DataLayout::ret_data_tag: 956 return new RetData(this); 957 case DataLayout::branch_data_tag: 958 return new BranchData(this); 959 case DataLayout::multi_branch_data_tag: 960 return new MultiBranchData(this); 961 case DataLayout::arg_info_data_tag: 962 return new ArgInfoData(this); 963 case DataLayout::call_type_data_tag: 964 return new CallTypeData(this); 965 case DataLayout::virtual_call_type_data_tag: 966 return new VirtualCallTypeData(this); 967 case DataLayout::parameters_type_data_tag: 968 return new ParametersTypeData(this); 969 }; 970} 971 972// Iteration over data. 973ProfileData* MethodData::next_data(ProfileData* current) const { 974 int current_index = dp_to_di(current->dp()); 975 int next_index = current_index + current->size_in_bytes(); 976 ProfileData* next = data_at(next_index); 977 return next; 978} 979 980// Give each of the data entries a chance to perform specific 981// data initialization. 982void MethodData::post_initialize(BytecodeStream* stream) { 983 ResourceMark rm; 984 ProfileData* data; 985 for (data = first_data(); is_valid(data); data = next_data(data)) { 986 stream->set_start(data->bci()); 987 stream->next(); 988 data->post_initialize(stream, this); 989 } 990 if (_parameters_type_data_di != -1) { 991 parameters_type_data()->post_initialize(NULL, this); 992 } 993} 994 995// Initialize the MethodData* corresponding to a given method. 996MethodData::MethodData(methodHandle method, int size, TRAPS) { 997 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC 998 ResourceMark rm; 999 // Set the method back-pointer. 1000 _method = method(); 1001 1002 init(); 1003 set_creation_mileage(mileage_of(method())); 1004 1005 // Go through the bytecodes and allocate and initialize the 1006 // corresponding data cells. 1007 int data_size = 0; 1008 int empty_bc_count = 0; // number of bytecodes lacking data 1009 _data[0] = 0; // apparently not set below. 1010 BytecodeStream stream(method); 1011 Bytecodes::Code c; 1012 while ((c = stream.next()) >= 0) { 1013 int size_in_bytes = initialize_data(&stream, data_size); 1014 data_size += size_in_bytes; 1015 if (size_in_bytes == 0) empty_bc_count += 1; 1016 } 1017 _data_size = data_size; 1018 int object_size = in_bytes(data_offset()) + data_size; 1019 1020 // Add some extra DataLayout cells (at least one) to track stray traps. 1021 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); 1022 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); 1023 1024 // Add a cell to record information about modified arguments. 1025 // Set up _args_modified array after traps cells so that 1026 // the code for traps cells works. 1027 DataLayout *dp = data_layout_at(data_size + extra_size); 1028 1029 int arg_size = method->size_of_parameters(); 1030 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); 1031 1032 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); 1033 object_size += extra_size + arg_data_size; 1034 1035 int args_cell = ParametersTypeData::compute_cell_count(method()); 1036 // If we are profiling parameters, we reserver an area near the end 1037 // of the MDO after the slots for bytecodes (because there's no bci 1038 // for method entry so they don't fit with the framework for the 1039 // profiling of bytecodes). We store the offset within the MDO of 1040 // this area (or -1 if no parameter is profiled) 1041 if (args_cell > 0) { 1042 object_size += DataLayout::compute_size_in_bytes(args_cell); 1043 _parameters_type_data_di = data_size + extra_size + arg_data_size; 1044 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); 1045 dp->initialize(DataLayout::parameters_type_data_tag, 0, args_cell); 1046 } else { 1047 _parameters_type_data_di = -1; 1048 } 1049 1050 // Set an initial hint. Don't use set_hint_di() because 1051 // first_di() may be out of bounds if data_size is 0. 1052 // In that situation, _hint_di is never used, but at 1053 // least well-defined. 1054 _hint_di = first_di(); 1055 1056 post_initialize(&stream); 1057 1058 set_size(object_size); 1059} 1060 1061void MethodData::init() { 1062 _invocation_counter.init(); 1063 _backedge_counter.init(); 1064 _invocation_counter_start = 0; 1065 _backedge_counter_start = 0; 1066 _num_loops = 0; 1067 _num_blocks = 0; 1068 _highest_comp_level = 0; 1069 _highest_osr_comp_level = 0; 1070 _would_profile = true; 1071 1072 // Initialize flags and trap history. 1073 _nof_decompiles = 0; 1074 _nof_overflow_recompiles = 0; 1075 _nof_overflow_traps = 0; 1076 clear_escape_info(); 1077 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); 1078 Copy::zero_to_words((HeapWord*) &_trap_hist, 1079 sizeof(_trap_hist) / sizeof(HeapWord)); 1080} 1081 1082// Get a measure of how much mileage the method has on it. 1083int MethodData::mileage_of(Method* method) { 1084 int mileage = 0; 1085 if (TieredCompilation) { 1086 mileage = MAX2(method->invocation_count(), method->backedge_count()); 1087 } else { 1088 int iic = method->interpreter_invocation_count(); 1089 if (mileage < iic) mileage = iic; 1090 MethodCounters* mcs = method->method_counters(); 1091 if (mcs != NULL) { 1092 InvocationCounter* ic = mcs->invocation_counter(); 1093 InvocationCounter* bc = mcs->backedge_counter(); 1094 int icval = ic->count(); 1095 if (ic->carry()) icval += CompileThreshold; 1096 if (mileage < icval) mileage = icval; 1097 int bcval = bc->count(); 1098 if (bc->carry()) bcval += CompileThreshold; 1099 if (mileage < bcval) mileage = bcval; 1100 } 1101 } 1102 return mileage; 1103} 1104 1105bool MethodData::is_mature() const { 1106 return CompilationPolicy::policy()->is_mature(_method); 1107} 1108 1109// Translate a bci to its corresponding data index (di). 1110address MethodData::bci_to_dp(int bci) { 1111 ResourceMark rm; 1112 ProfileData* data = data_before(bci); 1113 ProfileData* prev = NULL; 1114 for ( ; is_valid(data); data = next_data(data)) { 1115 if (data->bci() >= bci) { 1116 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); 1117 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); 1118 return data->dp(); 1119 } 1120 prev = data; 1121 } 1122 return (address)limit_data_position(); 1123} 1124 1125// Translate a bci to its corresponding data, or NULL. 1126ProfileData* MethodData::bci_to_data(int bci) { 1127 ProfileData* data = data_before(bci); 1128 for ( ; is_valid(data); data = next_data(data)) { 1129 if (data->bci() == bci) { 1130 set_hint_di(dp_to_di(data->dp())); 1131 return data; 1132 } else if (data->bci() > bci) { 1133 break; 1134 } 1135 } 1136 return bci_to_extra_data(bci, false); 1137} 1138 1139// Translate a bci to its corresponding extra data, or NULL. 1140ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { 1141 DataLayout* dp = extra_data_base(); 1142 DataLayout* end = extra_data_limit(); 1143 DataLayout* avail = NULL; 1144 for (; dp < end; dp = next_extra(dp)) { 1145 // No need for "OrderAccess::load_acquire" ops, 1146 // since the data structure is monotonic. 1147 if (dp->tag() == DataLayout::no_tag) break; 1148 if (dp->tag() == DataLayout::arg_info_data_tag) { 1149 dp = end; // ArgInfoData is at the end of extra data section. 1150 break; 1151 } 1152 if (dp->bci() == bci) { 1153 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); 1154 return new BitData(dp); 1155 } 1156 } 1157 if (create_if_missing && dp < end) { 1158 // Allocate this one. There is no mutual exclusion, 1159 // so two threads could allocate different BCIs to the 1160 // same data layout. This means these extra data 1161 // records, like most other MDO contents, must not be 1162 // trusted too much. 1163 DataLayout temp; 1164 temp.initialize(DataLayout::bit_data_tag, bci, 0); 1165 dp->release_set_header(temp.header()); 1166 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); 1167 //NO: assert(dp->bci() == bci, "no concurrent allocation"); 1168 return new BitData(dp); 1169 } 1170 return NULL; 1171} 1172 1173ArgInfoData *MethodData::arg_info() { 1174 DataLayout* dp = extra_data_base(); 1175 DataLayout* end = extra_data_limit(); 1176 for (; dp < end; dp = next_extra(dp)) { 1177 if (dp->tag() == DataLayout::arg_info_data_tag) 1178 return new ArgInfoData(dp); 1179 } 1180 return NULL; 1181} 1182 1183// Printing 1184 1185#ifndef PRODUCT 1186 1187void MethodData::print_on(outputStream* st) const { 1188 assert(is_methodData(), "should be method data"); 1189 st->print("method data for "); 1190 method()->print_value_on(st); 1191 st->cr(); 1192 print_data_on(st); 1193} 1194 1195#endif //PRODUCT 1196 1197void MethodData::print_value_on(outputStream* st) const { 1198 assert(is_methodData(), "should be method data"); 1199 st->print("method data for "); 1200 method()->print_value_on(st); 1201} 1202 1203#ifndef PRODUCT 1204void MethodData::print_data_on(outputStream* st) const { 1205 ResourceMark rm; 1206 ProfileData* data = first_data(); 1207 if (_parameters_type_data_di != -1) { 1208 parameters_type_data()->print_data_on(st); 1209 } 1210 for ( ; is_valid(data); data = next_data(data)) { 1211 st->print("%d", dp_to_di(data->dp())); 1212 st->fill_to(6); 1213 data->print_data_on(st); 1214 } 1215 st->print_cr("--- Extra data:"); 1216 DataLayout* dp = extra_data_base(); 1217 DataLayout* end = extra_data_limit(); 1218 for (; dp < end; dp = next_extra(dp)) { 1219 // No need for "OrderAccess::load_acquire" ops, 1220 // since the data structure is monotonic. 1221 if (dp->tag() == DataLayout::no_tag) continue; 1222 if (dp->tag() == DataLayout::bit_data_tag) { 1223 data = new BitData(dp); 1224 } else { 1225 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); 1226 data = new ArgInfoData(dp); 1227 dp = end; // ArgInfoData is at the end of extra data section. 1228 } 1229 st->print("%d", dp_to_di(data->dp())); 1230 st->fill_to(6); 1231 data->print_data_on(st); 1232 } 1233} 1234#endif 1235 1236#if INCLUDE_SERVICES 1237// Size Statistics 1238void MethodData::collect_statistics(KlassSizeStats *sz) const { 1239 int n = sz->count(this); 1240 sz->_method_data_bytes += n; 1241 sz->_method_all_bytes += n; 1242 sz->_rw_bytes += n; 1243} 1244#endif // INCLUDE_SERVICES 1245 1246// Verification 1247 1248void MethodData::verify_on(outputStream* st) { 1249 guarantee(is_methodData(), "object must be method data"); 1250 // guarantee(m->is_perm(), "should be in permspace"); 1251 this->verify_data_on(st); 1252} 1253 1254void MethodData::verify_data_on(outputStream* st) { 1255 NEEDS_CLEANUP; 1256 // not yet implemented. 1257} 1258 1259bool MethodData::profile_jsr292(methodHandle m, int bci) { 1260 if (m->is_compiled_lambda_form()) { 1261 return true; 1262 } 1263 1264 Bytecode_invoke inv(m , bci); 1265 return inv.is_invokedynamic() || inv.is_invokehandle(); 1266} 1267 1268int MethodData::profile_arguments_flag() { 1269 return TypeProfileLevel % 10; 1270} 1271 1272bool MethodData::profile_arguments() { 1273 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; 1274} 1275 1276bool MethodData::profile_arguments_jsr292_only() { 1277 return profile_arguments_flag() == type_profile_jsr292; 1278} 1279 1280bool MethodData::profile_all_arguments() { 1281 return profile_arguments_flag() == type_profile_all; 1282} 1283 1284bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { 1285 if (!profile_arguments()) { 1286 return false; 1287 } 1288 1289 if (profile_all_arguments()) { 1290 return true; 1291 } 1292 1293 assert(profile_arguments_jsr292_only(), "inconsistent"); 1294 return profile_jsr292(m, bci); 1295} 1296 1297int MethodData::profile_return_flag() { 1298 return (TypeProfileLevel % 100) / 10; 1299} 1300 1301bool MethodData::profile_return() { 1302 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; 1303} 1304 1305bool MethodData::profile_return_jsr292_only() { 1306 return profile_return_flag() == type_profile_jsr292; 1307} 1308 1309bool MethodData::profile_all_return() { 1310 return profile_return_flag() == type_profile_all; 1311} 1312 1313bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { 1314 if (!profile_return()) { 1315 return false; 1316 } 1317 1318 if (profile_all_return()) { 1319 return true; 1320 } 1321 1322 assert(profile_return_jsr292_only(), "inconsistent"); 1323 return profile_jsr292(m, bci); 1324} 1325 1326int MethodData::profile_parameters_flag() { 1327 return TypeProfileLevel / 100; 1328} 1329 1330bool MethodData::profile_parameters() { 1331 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; 1332} 1333 1334bool MethodData::profile_parameters_jsr292_only() { 1335 return profile_parameters_flag() == type_profile_jsr292; 1336} 1337 1338bool MethodData::profile_all_parameters() { 1339 return profile_parameters_flag() == type_profile_all; 1340} 1341 1342bool MethodData::profile_parameters_for_method(methodHandle m) { 1343 if (!profile_parameters()) { 1344 return false; 1345 } 1346 1347 if (profile_all_parameters()) { 1348 return true; 1349 } 1350 1351 assert(profile_parameters_jsr292_only(), "inconsistent"); 1352 return m->is_compiled_lambda_form(); 1353} 1354