1 /* 2 * Copyright (c) 2001, 2021, 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 "ci/ciMetadata.hpp" 27 #include "ci/ciMethodData.hpp" 28 #include "ci/ciReplay.hpp" 29 #include "ci/ciUtilities.inline.hpp" 30 #include "compiler/compiler_globals.hpp" 31 #include "memory/allocation.inline.hpp" 32 #include "memory/resourceArea.hpp" 33 #include "oops/klass.inline.hpp" 34 #include "runtime/deoptimization.hpp" 35 #include "utilities/copy.hpp" 36 37 // ciMethodData 38 39 // ------------------------------------------------------------------ 40 // ciMethodData::ciMethodData 41 // 42 ciMethodData::ciMethodData(MethodData* md) 43 : ciMetadata(md), 44 _data_size(0), _extra_data_size(0), _data(NULL), 45 // Set an initial hint. Don't use set_hint_di() because 46 // first_di() may be out of bounds if data_size is 0. 47 _hint_di(first_di()), 48 _state(empty_state), 49 _saw_free_extra_data(false), 50 // Initialize the escape information (to "don't know."); 51 _eflags(0), _arg_local(0), _arg_stack(0), _arg_returned(0), 52 _invocation_counter(0), 53 _orig(), 54 _parameters(NULL) {} 55 56 // Check for entries that reference an unloaded method 57 class PrepareExtraDataClosure : public CleanExtraDataClosure { 58 MethodData* _mdo; 59 SafepointStateTracker _safepoint_tracker; 60 GrowableArray<Method*> _uncached_methods; 61 62 public: 63 PrepareExtraDataClosure(MethodData* mdo) 64 : _mdo(mdo), 65 _safepoint_tracker(SafepointSynchronize::safepoint_state_tracker()), 66 _uncached_methods() 67 { } 68 69 bool is_live(Method* m) { 70 if (!m->method_holder()->is_loader_alive()) { 71 return false; 72 } 73 if (CURRENT_ENV->cached_metadata(m) == NULL) { 74 // Uncached entries need to be pre-populated. 75 _uncached_methods.append(m); 76 } 77 return true; 78 } 79 80 bool has_safepointed() { 81 return _safepoint_tracker.safepoint_state_changed(); 82 } 83 84 bool finish() { 85 if (_uncached_methods.length() == 0) { 86 // Preparation finished iff all Methods* were already cached. 87 return true; 88 } 89 // Holding locks through safepoints is bad practice. 90 MutexUnlocker mu(_mdo->extra_data_lock()); 91 for (int i = 0; i < _uncached_methods.length(); ++i) { 92 if (has_safepointed()) { 93 // The metadata in the growable array might contain stale 94 // entries after a safepoint. 95 return false; 96 } 97 Method* method = _uncached_methods.at(i); 98 // Populating ciEnv caches may cause safepoints due 99 // to taking the Compile_lock with safepoint checks. 100 (void)CURRENT_ENV->get_method(method); 101 } 102 return false; 103 } 104 }; 105 106 void ciMethodData::prepare_metadata() { 107 MethodData* mdo = get_MethodData(); 108 109 for (;;) { 110 ResourceMark rm; 111 PrepareExtraDataClosure cl(mdo); 112 mdo->clean_extra_data(&cl); 113 if (cl.finish()) { 114 // When encountering uncached metadata, the Compile_lock might be 115 // acquired when creating ciMetadata handles, causing safepoints 116 // which requires a new round of preparation to clean out potentially 117 // new unloading metadata. 118 return; 119 } 120 } 121 } 122 123 void ciMethodData::load_remaining_extra_data() { 124 MethodData* mdo = get_MethodData(); 125 MutexLocker ml(mdo->extra_data_lock()); 126 // Deferred metadata cleaning due to concurrent class unloading. 127 prepare_metadata(); 128 // After metadata preparation, there is no stale metadata, 129 // and no safepoints can introduce more stale metadata. 130 NoSafepointVerifier no_safepoint; 131 132 assert((mdo->data_size() == _data_size) && (mdo->extra_data_size() == _extra_data_size), "sanity, unchanged"); 133 assert(extra_data_base() == (DataLayout*)((address) _data + _data_size), "sanity"); 134 135 // Copy the extra data once it is prepared (i.e. cache populated, no release of extra data lock anymore) 136 Copy::disjoint_words_atomic((HeapWord*) mdo->extra_data_base(), 137 (HeapWord*)((address) _data + _data_size), 138 (_extra_data_size - mdo->parameters_size_in_bytes()) / HeapWordSize); 139 140 // speculative trap entries also hold a pointer to a Method so need to be translated 141 DataLayout* dp_src = mdo->extra_data_base(); 142 DataLayout* end_src = mdo->args_data_limit(); 143 DataLayout* dp_dst = extra_data_base(); 144 for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) { 145 assert(dp_src < end_src, "moved past end of extra data"); 146 assert(((intptr_t)dp_dst) - ((intptr_t)extra_data_base()) == ((intptr_t)dp_src) - ((intptr_t)mdo->extra_data_base()), "source and destination don't match"); 147 148 int tag = dp_src->tag(); 149 switch(tag) { 150 case DataLayout::speculative_trap_data_tag: { 151 ciSpeculativeTrapData data_dst(dp_dst); 152 SpeculativeTrapData data_src(dp_src); 153 data_dst.translate_from(&data_src); 154 break; 155 } 156 case DataLayout::bit_data_tag: 157 break; 158 case DataLayout::no_tag: 159 case DataLayout::arg_info_data_tag: 160 // An empty slot or ArgInfoData entry marks the end of the trap data 161 { 162 return; // Need a block to avoid SS compiler bug 163 } 164 default: 165 fatal("bad tag = %d", tag); 166 } 167 } 168 } 169 170 bool ciMethodData::load_data() { 171 MethodData* mdo = get_MethodData(); 172 if (mdo == NULL) { 173 return false; 174 } 175 176 // To do: don't copy the data if it is not "ripe" -- require a minimum # 177 // of invocations. 178 179 // Snapshot the data and extra parameter data first without the extra trap and arg info data. 180 // Those are copied in a second step. Actually, an approximate snapshot of the data is taken. 181 // Any concurrently executing threads may be changing the data as we copy it. 182 // 183 // The first snapshot step requires two copies (data entries and parameter data entries) since 184 // the MDO is laid out as follows: 185 // 186 // data_base: --------------------------- 187 // | data entries | 188 // | ... | 189 // extra_data_base: --------------------------- 190 // | trap data entries | 191 // | ... | 192 // | one arg info data entry | 193 // | data for each arg | 194 // | ... | 195 // args_data_limit: --------------------------- 196 // | parameter data entries | 197 // | ... | 198 // extra_data_limit: --------------------------- 199 // 200 // _data_size = extra_data_base - data_base 201 // _extra_data_size = extra_data_limit - extra_data_base 202 // total_size = _data_size + _extra_data_size 203 // args_data_limit = data_base + total_size - parameter_data_size 204 205 #ifndef ZERO 206 // Some Zero platforms do not have expected alignment, and do not use 207 // this code. static_assert would still fire and fail for them. 208 static_assert(sizeof(_orig) % HeapWordSize == 0, "align"); 209 #endif 210 Copy::disjoint_words_atomic((HeapWord*) &mdo->_compiler_counters, 211 (HeapWord*) &_orig, 212 sizeof(_orig) / HeapWordSize); 213 Arena* arena = CURRENT_ENV->arena(); 214 _data_size = mdo->data_size(); 215 _extra_data_size = mdo->extra_data_size(); 216 int total_size = _data_size + _extra_data_size; 217 _data = (intptr_t *) arena->Amalloc(total_size); 218 Copy::disjoint_words_atomic((HeapWord*) mdo->data_base(), 219 (HeapWord*) _data, 220 _data_size / HeapWordSize); 221 222 int parameters_data_size = mdo->parameters_size_in_bytes(); 223 if (parameters_data_size > 0) { 224 // Snapshot the parameter data 225 Copy::disjoint_words_atomic((HeapWord*) mdo->args_data_limit(), 226 (HeapWord*) ((address)_data + total_size - parameters_data_size), 227 parameters_data_size / HeapWordSize); 228 } 229 // Traverse the profile data, translating any oops into their 230 // ci equivalents. 231 ResourceMark rm; 232 ciProfileData* ci_data = first_data(); 233 ProfileData* data = mdo->first_data(); 234 while (is_valid(ci_data)) { 235 ci_data->translate_from(data); 236 ci_data = next_data(ci_data); 237 data = mdo->next_data(data); 238 } 239 if (mdo->parameters_type_data() != NULL) { 240 _parameters = data_layout_at(mdo->parameters_type_data_di()); 241 ciParametersTypeData* parameters = new ciParametersTypeData(_parameters); 242 parameters->translate_from(mdo->parameters_type_data()); 243 } 244 245 assert((DataLayout*) ((address)_data + total_size - parameters_data_size) == args_data_limit(), 246 "sanity - parameter data starts after the argument data of the single ArgInfoData entry"); 247 load_remaining_extra_data(); 248 249 // Note: Extra data are all BitData, and do not need translation. 250 _invocation_counter = mdo->invocation_count(); 251 _state = mdo->is_mature()? mature_state: immature_state; 252 253 _eflags = mdo->eflags(); 254 _arg_local = mdo->arg_local(); 255 _arg_stack = mdo->arg_stack(); 256 _arg_returned = mdo->arg_returned(); 257 #ifndef PRODUCT 258 if (ReplayCompiles) { 259 ciReplay::initialize(this); 260 if (is_empty()) { 261 return false; 262 } 263 } 264 #endif 265 return true; 266 } 267 268 void ciReceiverTypeData::translate_receiver_data_from(const ProfileData* data) { 269 for (uint row = 0; row < row_limit(); row++) { 270 Klass* k = data->as_ReceiverTypeData()->receiver(row); 271 if (k != NULL) { 272 if (k->is_loader_alive()) { 273 ciKlass* klass = CURRENT_ENV->get_klass(k); 274 set_receiver(row, klass); 275 } else { 276 // With concurrent class unloading, the MDO could have stale metadata; override it 277 clear_row(row); 278 } 279 } else { 280 set_receiver(row, NULL); 281 } 282 } 283 } 284 285 void ciTypeStackSlotEntries::translate_type_data_from(const TypeStackSlotEntries* entries) { 286 for (int i = 0; i < number_of_entries(); i++) { 287 intptr_t k = entries->type(i); 288 Klass* klass = (Klass*)klass_part(k); 289 if (klass != NULL && !klass->is_loader_alive()) { 290 // With concurrent class unloading, the MDO could have stale metadata; override it 291 TypeStackSlotEntries::set_type(i, TypeStackSlotEntries::with_status((Klass*)NULL, k)); 292 } else { 293 TypeStackSlotEntries::set_type(i, translate_klass(k)); 294 } 295 } 296 } 297 298 void ciSingleTypeEntry::translate_type_data_from(const SingleTypeEntry* ret) { 299 intptr_t k = ret->type(); 300 Klass* klass = (Klass*)klass_part(k); 301 if (klass != NULL && !klass->is_loader_alive()) { 302 // With concurrent class unloading, the MDO could have stale metadata; override it 303 set_type(SingleTypeEntry::with_status((Klass*)NULL, k)); 304 } else { 305 set_type(translate_klass(k)); 306 } 307 } 308 309 void ciSpeculativeTrapData::translate_from(const ProfileData* data) { 310 Method* m = data->as_SpeculativeTrapData()->method(); 311 ciMethod* ci_m = CURRENT_ENV->get_method(m); 312 set_method(ci_m); 313 } 314 315 // Get the data at an arbitrary (sort of) data index. 316 ciProfileData* ciMethodData::data_at(int data_index) { 317 if (out_of_bounds(data_index)) { 318 return NULL; 319 } 320 DataLayout* data_layout = data_layout_at(data_index); 321 return data_from(data_layout); 322 } 323 324 ciProfileData* ciMethodData::data_from(DataLayout* data_layout) { 325 switch (data_layout->tag()) { 326 case DataLayout::no_tag: 327 default: 328 ShouldNotReachHere(); 329 return NULL; 330 case DataLayout::bit_data_tag: 331 return new ciBitData(data_layout); 332 case DataLayout::counter_data_tag: 333 return new ciCounterData(data_layout); 334 case DataLayout::jump_data_tag: 335 return new ciJumpData(data_layout); 336 case DataLayout::receiver_type_data_tag: 337 return new ciReceiverTypeData(data_layout); 338 case DataLayout::virtual_call_data_tag: 339 return new ciVirtualCallData(data_layout); 340 case DataLayout::ret_data_tag: 341 return new ciRetData(data_layout); 342 case DataLayout::branch_data_tag: 343 return new ciBranchData(data_layout); 344 case DataLayout::multi_branch_data_tag: 345 return new ciMultiBranchData(data_layout); 346 case DataLayout::arg_info_data_tag: 347 return new ciArgInfoData(data_layout); 348 case DataLayout::call_type_data_tag: 349 return new ciCallTypeData(data_layout); 350 case DataLayout::virtual_call_type_data_tag: 351 return new ciVirtualCallTypeData(data_layout); 352 case DataLayout::parameters_type_data_tag: 353 return new ciParametersTypeData(data_layout); 354 case DataLayout::array_load_store_data_tag: 355 return new ciArrayLoadStoreData(data_layout); 356 case DataLayout::acmp_data_tag: 357 return new ciACmpData(data_layout); 358 }; 359 } 360 361 // Iteration over data. 362 ciProfileData* ciMethodData::next_data(ciProfileData* current) { 363 int current_index = dp_to_di(current->dp()); 364 int next_index = current_index + current->size_in_bytes(); 365 ciProfileData* next = data_at(next_index); 366 return next; 367 } 368 369 DataLayout* ciMethodData::next_data_layout(DataLayout* current) { 370 int current_index = dp_to_di((address)current); 371 int next_index = current_index + current->size_in_bytes(); 372 if (out_of_bounds(next_index)) { 373 return NULL; 374 } 375 DataLayout* next = data_layout_at(next_index); 376 return next; 377 } 378 379 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) { 380 DataLayout* dp = extra_data_base(); 381 DataLayout* end = args_data_limit(); 382 two_free_slots = false; 383 for (;dp < end; dp = MethodData::next_extra(dp)) { 384 switch(dp->tag()) { 385 case DataLayout::no_tag: 386 _saw_free_extra_data = true; // observed an empty slot (common case) 387 two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag); 388 return NULL; 389 case DataLayout::arg_info_data_tag: 390 return NULL; // ArgInfoData is after the trap data right before the parameter data. 391 case DataLayout::bit_data_tag: 392 if (m == NULL && dp->bci() == bci) { 393 return new ciBitData(dp); 394 } 395 break; 396 case DataLayout::speculative_trap_data_tag: { 397 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp); 398 // data->method() might be null if the MDO is snapshotted 399 // concurrently with a trap 400 if (m != NULL && data->method() == m && dp->bci() == bci) { 401 return data; 402 } 403 break; 404 } 405 default: 406 fatal("bad tag = %d", dp->tag()); 407 } 408 } 409 return NULL; 410 } 411 412 // Translate a bci to its corresponding data, or NULL. 413 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) { 414 // If m is not NULL we look for a SpeculativeTrapData entry 415 if (m == NULL) { 416 DataLayout* data_layout = data_layout_before(bci); 417 for ( ; is_valid(data_layout); data_layout = next_data_layout(data_layout)) { 418 if (data_layout->bci() == bci) { 419 set_hint_di(dp_to_di((address)data_layout)); 420 return data_from(data_layout); 421 } else if (data_layout->bci() > bci) { 422 break; 423 } 424 } 425 } 426 bool two_free_slots = false; 427 ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots); 428 if (result != NULL) { 429 return result; 430 } 431 if (m != NULL && !two_free_slots) { 432 // We were looking for a SpeculativeTrapData entry we didn't 433 // find. Room is not available for more SpeculativeTrapData 434 // entries, look in the non SpeculativeTrapData entries. 435 return bci_to_data(bci, NULL); 436 } 437 return NULL; 438 } 439 440 // Conservatively decode the trap_state of a ciProfileData. 441 int ciMethodData::has_trap_at(ciProfileData* data, int reason) { 442 typedef Deoptimization::DeoptReason DR_t; 443 int per_bc_reason 444 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason); 445 if (trap_count(reason) == 0) { 446 // Impossible for this trap to have occurred, regardless of trap_state. 447 // Note: This happens if the MDO is empty. 448 return 0; 449 } else if (per_bc_reason == Deoptimization::Reason_none) { 450 // We cannot conclude anything; a trap happened somewhere, maybe here. 451 return -1; 452 } else if (data == NULL) { 453 // No profile here, not even an extra_data record allocated on the fly. 454 // If there are empty extra_data records, and there had been a trap, 455 // there would have been a non-null data pointer. If there are no 456 // free extra_data records, we must return a conservative -1. 457 if (_saw_free_extra_data) 458 return 0; // Q.E.D. 459 else 460 return -1; // bail with a conservative answer 461 } else { 462 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason); 463 } 464 } 465 466 int ciMethodData::trap_recompiled_at(ciProfileData* data) { 467 if (data == NULL) { 468 return (_saw_free_extra_data? 0: -1); // (see previous method) 469 } else { 470 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0; 471 } 472 } 473 474 void ciMethodData::clear_escape_info() { 475 VM_ENTRY_MARK; 476 MethodData* mdo = get_MethodData(); 477 if (mdo != NULL) { 478 mdo->clear_escape_info(); 479 ArgInfoData *aid = arg_info(); 480 int arg_count = (aid == NULL) ? 0 : aid->number_of_args(); 481 for (int i = 0; i < arg_count; i++) { 482 set_arg_modified(i, 0); 483 } 484 } 485 _eflags = _arg_local = _arg_stack = _arg_returned = 0; 486 } 487 488 // copy our escape info to the MethodData* if it exists 489 void ciMethodData::update_escape_info() { 490 VM_ENTRY_MARK; 491 MethodData* mdo = get_MethodData(); 492 if ( mdo != NULL) { 493 mdo->set_eflags(_eflags); 494 mdo->set_arg_local(_arg_local); 495 mdo->set_arg_stack(_arg_stack); 496 mdo->set_arg_returned(_arg_returned); 497 int arg_count = mdo->method()->size_of_parameters(); 498 for (int i = 0; i < arg_count; i++) { 499 mdo->set_arg_modified(i, arg_modified(i)); 500 } 501 } 502 } 503 504 void ciMethodData::set_compilation_stats(short loops, short blocks) { 505 VM_ENTRY_MARK; 506 MethodData* mdo = get_MethodData(); 507 if (mdo != NULL) { 508 mdo->set_num_loops(loops); 509 mdo->set_num_blocks(blocks); 510 } 511 } 512 513 void ciMethodData::set_would_profile(bool p) { 514 VM_ENTRY_MARK; 515 MethodData* mdo = get_MethodData(); 516 if (mdo != NULL) { 517 mdo->set_would_profile(p); 518 } 519 } 520 521 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) { 522 VM_ENTRY_MARK; 523 MethodData* mdo = get_MethodData(); 524 if (mdo != NULL) { 525 ProfileData* data = mdo->bci_to_data(bci); 526 if (data != NULL) { 527 if (data->is_CallTypeData()) { 528 data->as_CallTypeData()->set_argument_type(i, k->get_Klass()); 529 } else { 530 assert(data->is_VirtualCallTypeData(), "no arguments!"); 531 data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass()); 532 } 533 } 534 } 535 } 536 537 void ciMethodData::set_parameter_type(int i, ciKlass* k) { 538 VM_ENTRY_MARK; 539 MethodData* mdo = get_MethodData(); 540 if (mdo != NULL) { 541 mdo->parameters_type_data()->set_type(i, k->get_Klass()); 542 } 543 } 544 545 void ciMethodData::set_return_type(int bci, ciKlass* k) { 546 VM_ENTRY_MARK; 547 MethodData* mdo = get_MethodData(); 548 if (mdo != NULL) { 549 ProfileData* data = mdo->bci_to_data(bci); 550 if (data != NULL) { 551 if (data->is_CallTypeData()) { 552 data->as_CallTypeData()->set_return_type(k->get_Klass()); 553 } else { 554 assert(data->is_VirtualCallTypeData(), "no arguments!"); 555 data->as_VirtualCallTypeData()->set_return_type(k->get_Klass()); 556 } 557 } 558 } 559 } 560 561 bool ciMethodData::has_escape_info() { 562 return eflag_set(MethodData::estimated); 563 } 564 565 void ciMethodData::set_eflag(MethodData::EscapeFlag f) { 566 set_bits(_eflags, f); 567 } 568 569 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const { 570 return mask_bits(_eflags, f) != 0; 571 } 572 573 void ciMethodData::set_arg_local(int i) { 574 set_nth_bit(_arg_local, i); 575 } 576 577 void ciMethodData::set_arg_stack(int i) { 578 set_nth_bit(_arg_stack, i); 579 } 580 581 void ciMethodData::set_arg_returned(int i) { 582 set_nth_bit(_arg_returned, i); 583 } 584 585 void ciMethodData::set_arg_modified(int arg, uint val) { 586 ArgInfoData *aid = arg_info(); 587 if (aid == NULL) 588 return; 589 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); 590 aid->set_arg_modified(arg, val); 591 } 592 593 bool ciMethodData::is_arg_local(int i) const { 594 return is_set_nth_bit(_arg_local, i); 595 } 596 597 bool ciMethodData::is_arg_stack(int i) const { 598 return is_set_nth_bit(_arg_stack, i); 599 } 600 601 bool ciMethodData::is_arg_returned(int i) const { 602 return is_set_nth_bit(_arg_returned, i); 603 } 604 605 uint ciMethodData::arg_modified(int arg) const { 606 ArgInfoData *aid = arg_info(); 607 if (aid == NULL) 608 return 0; 609 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); 610 return aid->arg_modified(arg); 611 } 612 613 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { 614 // Get offset within MethodData* of the data array 615 ByteSize data_offset = MethodData::data_offset(); 616 617 // Get cell offset of the ProfileData within data array 618 int cell_offset = dp_to_di(data->dp()); 619 620 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag 621 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data); 622 623 return in_ByteSize(offset); 624 } 625 626 ciArgInfoData *ciMethodData::arg_info() const { 627 // Should be last, have to skip all traps. 628 DataLayout* dp = extra_data_base(); 629 DataLayout* end = args_data_limit(); 630 for (; dp < end; dp = MethodData::next_extra(dp)) { 631 if (dp->tag() == DataLayout::arg_info_data_tag) 632 return new ciArgInfoData(dp); 633 } 634 return NULL; 635 } 636 637 638 // Implementation of the print method. 639 void ciMethodData::print_impl(outputStream* st) { 640 ciMetadata::print_impl(st); 641 } 642 643 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) { 644 if (k != NULL) { 645 if (round == 0) { 646 count++; 647 } else { 648 out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)), 649 CURRENT_ENV->replay_name(k)); 650 } 651 } 652 } 653 654 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) { 655 for (uint i = 0; i < vdata->row_limit(); i++) { 656 dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i)); 657 } 658 } 659 660 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) { 661 if (call_type_data->has_arguments()) { 662 for (int i = 0; i < call_type_data->number_of_arguments(); i++) { 663 dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->argument_type_offset(i), call_type_data->valid_argument_type(i)); 664 } 665 } 666 if (call_type_data->has_return()) { 667 dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type()); 668 } 669 } 670 671 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) { 672 DataLayout* dp = extra_data_base(); 673 DataLayout* end = args_data_limit(); 674 675 for (;dp < end; dp = MethodData::next_extra(dp)) { 676 switch(dp->tag()) { 677 case DataLayout::no_tag: 678 case DataLayout::arg_info_data_tag: 679 return; 680 case DataLayout::bit_data_tag: 681 break; 682 case DataLayout::speculative_trap_data_tag: { 683 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp); 684 ciMethod* m = data->method(); 685 if (m != NULL) { 686 if (round == 0) { 687 count++; 688 } else { 689 out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t))); 690 m->dump_name_as_ascii(out); 691 } 692 } 693 break; 694 } 695 default: 696 fatal("bad tag = %d", dp->tag()); 697 } 698 } 699 } 700 701 void ciMethodData::dump_replay_data(outputStream* out) { 702 ResourceMark rm; 703 MethodData* mdo = get_MethodData(); 704 Method* method = mdo->method(); 705 out->print("ciMethodData "); 706 ciMethod::dump_name_as_ascii(out, method); 707 out->print(" %d %d", _state, _invocation_counter); 708 709 // dump the contents of the MDO header as raw data 710 unsigned char* orig = (unsigned char*)&_orig; 711 int length = sizeof(_orig); 712 out->print(" orig %d", length); 713 for (int i = 0; i < length; i++) { 714 out->print(" %d", orig[i]); 715 } 716 717 // dump the MDO data as raw data 718 int elements = (data_size() + extra_data_size()) / sizeof(intptr_t); 719 out->print(" data %d", elements); 720 for (int i = 0; i < elements; i++) { 721 // We could use INTPTR_FORMAT here but that's zero justified 722 // which makes comparing it with the SA version of this output 723 // harder. data()'s element type is intptr_t. 724 out->print(" " INTPTRNZ_FORMAT, data()[i]); 725 } 726 727 // The MDO contained oop references as ciObjects, so scan for those 728 // and emit pairs of offset and klass name so that they can be 729 // reconstructed at runtime. The first round counts the number of 730 // oop references and the second actually emits them. 731 ciParametersTypeData* parameters = parameters_type_data(); 732 for (int count = 0, round = 0; round < 2; round++) { 733 if (round == 1) out->print(" oops %d", count); 734 ProfileData* pdata = first_data(); 735 for ( ; is_valid(pdata); pdata = next_data(pdata)) { 736 if (pdata->is_VirtualCallData()) { 737 ciVirtualCallData* vdata = (ciVirtualCallData*)pdata; 738 dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata); 739 if (pdata->is_VirtualCallTypeData()) { 740 ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata; 741 dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data); 742 } 743 } else if (pdata->is_ReceiverTypeData()) { 744 ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata; 745 dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata); 746 } else if (pdata->is_CallTypeData()) { 747 ciCallTypeData* call_type_data = (ciCallTypeData*)pdata; 748 dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data); 749 } else if (pdata->is_ArrayLoadStoreData()) { 750 ciArrayLoadStoreData* array_load_store_data = (ciArrayLoadStoreData*)pdata; 751 dump_replay_data_type_helper(out, round, count, array_load_store_data, ciArrayLoadStoreData::array_offset(), 752 array_load_store_data->array()->valid_type()); 753 dump_replay_data_type_helper(out, round, count, array_load_store_data, ciArrayLoadStoreData::element_offset(), 754 array_load_store_data->element()->valid_type()); 755 } else if (pdata->is_ACmpData()) { 756 ciACmpData* acmp_data = (ciACmpData*)pdata; 757 dump_replay_data_type_helper(out, round, count, acmp_data, ciACmpData::left_offset(), 758 acmp_data->left()->valid_type()); 759 dump_replay_data_type_helper(out, round, count, acmp_data, ciACmpData::right_offset(), 760 acmp_data->right()->valid_type()); 761 762 } 763 } 764 if (parameters != NULL) { 765 for (int i = 0; i < parameters->number_of_parameters(); i++) { 766 dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i)); 767 } 768 } 769 } 770 for (int count = 0, round = 0; round < 2; round++) { 771 if (round == 1) out->print(" methods %d", count); 772 dump_replay_data_extra_data_helper(out, round, count); 773 } 774 out->cr(); 775 } 776 777 #ifndef PRODUCT 778 void ciMethodData::print() { 779 print_data_on(tty); 780 } 781 782 void ciMethodData::print_data_on(outputStream* st) { 783 ResourceMark rm; 784 ciParametersTypeData* parameters = parameters_type_data(); 785 if (parameters != NULL) { 786 parameters->print_data_on(st); 787 } 788 ciProfileData* data; 789 for (data = first_data(); is_valid(data); data = next_data(data)) { 790 st->print("%d", dp_to_di(data->dp())); 791 st->fill_to(6); 792 data->print_data_on(st); 793 } 794 st->print_cr("--- Extra data:"); 795 DataLayout* dp = extra_data_base(); 796 DataLayout* end = args_data_limit(); 797 for (;; dp = MethodData::next_extra(dp)) { 798 assert(dp < end, "moved past end of extra data"); 799 switch (dp->tag()) { 800 case DataLayout::no_tag: 801 continue; 802 case DataLayout::bit_data_tag: 803 data = new BitData(dp); 804 break; 805 case DataLayout::arg_info_data_tag: 806 data = new ciArgInfoData(dp); 807 dp = end; // ArgInfoData is after the trap data right before the parameter data. 808 break; 809 case DataLayout::speculative_trap_data_tag: 810 data = new ciSpeculativeTrapData(dp); 811 break; 812 default: 813 fatal("unexpected tag %d", dp->tag()); 814 } 815 st->print("%d", dp_to_di(data->dp())); 816 st->fill_to(6); 817 data->print_data_on(st); 818 if (dp >= end) return; 819 } 820 } 821 822 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) { 823 if (TypeEntries::is_type_none(k)) { 824 st->print("none"); 825 } else if (TypeEntries::is_type_unknown(k)) { 826 st->print("unknown"); 827 } else { 828 valid_ciklass(k)->print_name_on(st); 829 } 830 if (TypeEntries::was_null_seen(k)) { 831 st->print(" (null seen)"); 832 } 833 } 834 835 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const { 836 for (int i = 0; i < number_of_entries(); i++) { 837 _pd->tab(st); 838 st->print("%d: stack (%u) ", i, stack_slot(i)); 839 print_ciklass(st, type(i)); 840 st->cr(); 841 } 842 } 843 844 void ciSingleTypeEntry::print_data_on(outputStream* st) const { 845 _pd->tab(st); 846 st->print("ret "); 847 print_ciklass(st, type()); 848 st->cr(); 849 } 850 851 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const { 852 print_shared(st, "ciCallTypeData", extra); 853 if (has_arguments()) { 854 tab(st, true); 855 st->print_cr("argument types"); 856 args()->print_data_on(st); 857 } 858 if (has_return()) { 859 tab(st, true); 860 st->print_cr("return type"); 861 ret()->print_data_on(st); 862 } 863 } 864 865 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const { 866 uint row; 867 int entries = 0; 868 for (row = 0; row < row_limit(); row++) { 869 if (receiver(row) != NULL) entries++; 870 } 871 st->print_cr("count(%u) entries(%u)", count(), entries); 872 for (row = 0; row < row_limit(); row++) { 873 if (receiver(row) != NULL) { 874 tab(st); 875 receiver(row)->print_name_on(st); 876 st->print_cr("(%u)", receiver_count(row)); 877 } 878 } 879 } 880 881 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const { 882 print_shared(st, "ciReceiverTypeData", extra); 883 print_receiver_data_on(st); 884 } 885 886 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const { 887 print_shared(st, "ciVirtualCallData", extra); 888 rtd_super()->print_receiver_data_on(st); 889 } 890 891 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const { 892 print_shared(st, "ciVirtualCallTypeData", extra); 893 rtd_super()->print_receiver_data_on(st); 894 if (has_arguments()) { 895 tab(st, true); 896 st->print("argument types"); 897 args()->print_data_on(st); 898 } 899 if (has_return()) { 900 tab(st, true); 901 st->print("return type"); 902 ret()->print_data_on(st); 903 } 904 } 905 906 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const { 907 st->print_cr("ciParametersTypeData"); 908 parameters()->print_data_on(st); 909 } 910 911 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const { 912 st->print_cr("ciSpeculativeTrapData"); 913 tab(st); 914 method()->print_short_name(st); 915 st->cr(); 916 } 917 918 void ciArrayLoadStoreData::print_data_on(outputStream* st, const char* extra) const { 919 print_shared(st, "ciArrayLoadStoreData", extra); 920 tab(st, true); 921 st->print("array"); 922 array()->print_data_on(st); 923 tab(st, true); 924 st->print("element"); 925 element()->print_data_on(st); 926 } 927 928 void ciACmpData::print_data_on(outputStream* st, const char* extra) const { 929 BranchData::print_data_on(st, extra); 930 st->cr(); 931 tab(st, true); 932 st->print("left"); 933 left()->print_data_on(st); 934 tab(st, true); 935 st->print("right"); 936 right()->print_data_on(st); 937 } 938 #endif