1 /*
   2  * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "ci/ciMetadata.hpp"
  27 #include "ci/ciMethodData.hpp"
  28 #include "ci/ciReplay.hpp"
  29 #include "ci/ciUtilities.hpp"
  30 #include "memory/allocation.inline.hpp"
  31 #include "memory/resourceArea.hpp"
  32 #include "runtime/deoptimization.hpp"
  33 #include "utilities/copy.hpp"
  34 
  35 // ciMethodData
  36 
  37 // ------------------------------------------------------------------
  38 // ciMethodData::ciMethodData
  39 //
  40 ciMethodData::ciMethodData(MethodData* md) : ciMetadata(md) {
  41   assert(md != NULL, "no null method data");
  42   Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
  43   _data = NULL;
  44   _data_size = 0;
  45   _extra_data_size = 0;
  46   _current_mileage = 0;
  47   _invocation_counter = 0;
  48   _backedge_counter = 0;
  49   _state = empty_state;
  50   _saw_free_extra_data = false;
  51   // Set an initial hint. Don't use set_hint_di() because
  52   // first_di() may be out of bounds if data_size is 0.
  53   _hint_di = first_di();
  54   // Initialize the escape information (to "don't know.");
  55   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
  56   _parameters = NULL;
  57 }
  58 
  59 // ------------------------------------------------------------------
  60 // ciMethodData::ciMethodData
  61 //
  62 // No MethodData*.
  63 ciMethodData::ciMethodData() : ciMetadata(NULL) {
  64   Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
  65   _data = NULL;
  66   _data_size = 0;
  67   _extra_data_size = 0;
  68   _current_mileage = 0;
  69   _invocation_counter = 0;
  70   _backedge_counter = 0;
  71   _state = empty_state;
  72   _saw_free_extra_data = false;
  73   // Set an initial hint. Don't use set_hint_di() because
  74   // first_di() may be out of bounds if data_size is 0.
  75   _hint_di = first_di();
  76   // Initialize the escape information (to "don't know.");
  77   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
  78   _parameters = NULL;
  79 }
  80 
  81 void ciMethodData::load_extra_data() {
  82   MethodData* mdo = get_MethodData();
  83 
  84   MutexLocker ml(mdo->extra_data_lock());
  85 
  86   // speculative trap entries also hold a pointer to a Method so need to be translated
  87   DataLayout* dp_src  = mdo->extra_data_base();
  88   DataLayout* end_src = mdo->args_data_limit();
  89   DataLayout* dp_dst  = extra_data_base();
  90   for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) {
  91     assert(dp_src < end_src, "moved past end of extra data");
  92     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");
  93 
  94     // New traps in the MDO may have been added since we copied the
  95     // data (concurrent deoptimizations before we acquired
  96     // extra_data_lock above) or can be removed (a safepoint may occur
  97     // in the translate_from call below) as we translate the copy:
  98     // update the copy as we go.
  99     int tag = dp_src->tag();
 100     if (tag != DataLayout::arg_info_data_tag) {
 101       memcpy(dp_dst, dp_src, ((intptr_t)MethodData::next_extra(dp_src)) - ((intptr_t)dp_src));
 102     }
 103 
 104     switch(tag) {
 105     case DataLayout::speculative_trap_data_tag: {
 106       ciSpeculativeTrapData data_dst(dp_dst);
 107       SpeculativeTrapData   data_src(dp_src);
 108 
 109       { // During translation a safepoint can happen or VM lock can be taken (e.g., Compile_lock).
 110         MutexUnlocker ml(mdo->extra_data_lock());
 111         data_dst.translate_from(&data_src);
 112       }
 113       break;
 114     }
 115     case DataLayout::bit_data_tag:
 116       break;
 117     case DataLayout::no_tag:
 118     case DataLayout::arg_info_data_tag:
 119       // An empty slot or ArgInfoData entry marks the end of the trap data
 120       {
 121         return; // Need a block to avoid SS compiler bug
 122       }
 123     default:
 124       fatal("bad tag = %d", tag);
 125     }
 126   }
 127 }
 128 
 129 void ciMethodData::load_data() {
 130   MethodData* mdo = get_MethodData();
 131   if (mdo == NULL) {
 132     return;
 133   }
 134 
 135   // To do: don't copy the data if it is not "ripe" -- require a minimum #
 136   // of invocations.
 137 
 138   // Snapshot the data -- actually, take an approximate snapshot of
 139   // the data.  Any concurrently executing threads may be changing the
 140   // data as we copy it.
 141   Copy::disjoint_words((HeapWord*) mdo,
 142                        (HeapWord*) &_orig,
 143                        sizeof(_orig) / HeapWordSize);
 144   Arena* arena = CURRENT_ENV->arena();
 145   _data_size = mdo->data_size();
 146   _extra_data_size = mdo->extra_data_size();
 147   int total_size = _data_size + _extra_data_size;
 148   _data = (intptr_t *) arena->Amalloc(total_size);
 149   Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize);
 150 
 151   // Traverse the profile data, translating any oops into their
 152   // ci equivalents.
 153   ResourceMark rm;
 154   ciProfileData* ci_data = first_data();
 155   ProfileData* data = mdo->first_data();
 156   while (is_valid(ci_data)) {
 157     ci_data->translate_from(data);
 158     ci_data = next_data(ci_data);
 159     data = mdo->next_data(data);
 160   }
 161   if (mdo->parameters_type_data() != NULL) {
 162     _parameters = data_layout_at(mdo->parameters_type_data_di());
 163     ciParametersTypeData* parameters = new ciParametersTypeData(_parameters);
 164     parameters->translate_from(mdo->parameters_type_data());
 165   }
 166 
 167   load_extra_data();
 168 
 169   // Note:  Extra data are all BitData, and do not need translation.
 170   _current_mileage = MethodData::mileage_of(mdo->method());
 171   _invocation_counter = mdo->invocation_count();
 172   _backedge_counter = mdo->backedge_count();
 173   _state = mdo->is_mature()? mature_state: immature_state;
 174 
 175   _eflags = mdo->eflags();
 176   _arg_local = mdo->arg_local();
 177   _arg_stack = mdo->arg_stack();
 178   _arg_returned  = mdo->arg_returned();
 179 #ifndef PRODUCT
 180   if (ReplayCompiles) {
 181     ciReplay::initialize(this);
 182   }
 183 #endif
 184 }
 185 
 186 void ciReceiverTypeData::translate_receiver_data_from(const ProfileData* data) {
 187   for (uint row = 0; row < row_limit(); row++) {
 188     Klass* k = data->as_ReceiverTypeData()->receiver(row);
 189     if (k != NULL) {
 190       ciKlass* klass = CURRENT_ENV->get_klass(k);
 191       set_receiver(row, klass);
 192     }
 193   }
 194 }
 195 
 196 
 197 void ciTypeStackSlotEntries::translate_type_data_from(const TypeStackSlotEntries* entries) {
 198   for (int i = 0; i < number_of_entries(); i++) {
 199     intptr_t k = entries->type(i);
 200     TypeStackSlotEntries::set_type(i, translate_klass(k));
 201   }
 202 }
 203 
 204 void ciReturnTypeEntry::translate_type_data_from(const ReturnTypeEntry* ret) {
 205   intptr_t k = ret->type();
 206   set_type(translate_klass(k));
 207 }
 208 
 209 void ciSpeculativeTrapData::translate_from(const ProfileData* data) {
 210   Method* m = data->as_SpeculativeTrapData()->method();
 211   ciMethod* ci_m = CURRENT_ENV->get_method(m);
 212   set_method(ci_m);
 213 }
 214 
 215 // Get the data at an arbitrary (sort of) data index.
 216 ciProfileData* ciMethodData::data_at(int data_index) {
 217   if (out_of_bounds(data_index)) {
 218     return NULL;
 219   }
 220   DataLayout* data_layout = data_layout_at(data_index);
 221 
 222   switch (data_layout->tag()) {
 223   case DataLayout::no_tag:
 224   default:
 225     ShouldNotReachHere();
 226     return NULL;
 227   case DataLayout::bit_data_tag:
 228     return new ciBitData(data_layout);
 229   case DataLayout::counter_data_tag:
 230     return new ciCounterData(data_layout);
 231   case DataLayout::jump_data_tag:
 232     return new ciJumpData(data_layout);
 233   case DataLayout::receiver_type_data_tag:
 234     return new ciReceiverTypeData(data_layout);
 235   case DataLayout::virtual_call_data_tag:
 236     return new ciVirtualCallData(data_layout);
 237   case DataLayout::ret_data_tag:
 238     return new ciRetData(data_layout);
 239   case DataLayout::branch_data_tag:
 240     return new ciBranchData(data_layout);
 241   case DataLayout::multi_branch_data_tag:
 242     return new ciMultiBranchData(data_layout);
 243   case DataLayout::arg_info_data_tag:
 244     return new ciArgInfoData(data_layout);
 245   case DataLayout::call_type_data_tag:
 246     return new ciCallTypeData(data_layout);
 247   case DataLayout::virtual_call_type_data_tag:
 248     return new ciVirtualCallTypeData(data_layout);
 249   case DataLayout::parameters_type_data_tag:
 250     return new ciParametersTypeData(data_layout);
 251   };
 252 }
 253 
 254 // Iteration over data.
 255 ciProfileData* ciMethodData::next_data(ciProfileData* current) {
 256   int current_index = dp_to_di(current->dp());
 257   int next_index = current_index + current->size_in_bytes();
 258   ciProfileData* next = data_at(next_index);
 259   return next;
 260 }
 261 
 262 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) {
 263   DataLayout* dp  = extra_data_base();
 264   DataLayout* end = args_data_limit();
 265   two_free_slots = false;
 266   for (;dp < end; dp = MethodData::next_extra(dp)) {
 267     switch(dp->tag()) {
 268     case DataLayout::no_tag:
 269       _saw_free_extra_data = true;  // observed an empty slot (common case)
 270       two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag);
 271       return NULL;
 272     case DataLayout::arg_info_data_tag:
 273       return NULL; // ArgInfoData is at the end of extra data section.
 274     case DataLayout::bit_data_tag:
 275       if (m == NULL && dp->bci() == bci) {
 276         return new ciBitData(dp);
 277       }
 278       break;
 279     case DataLayout::speculative_trap_data_tag: {
 280       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 281       // data->method() might be null if the MDO is snapshotted
 282       // concurrently with a trap
 283       if (m != NULL && data->method() == m && dp->bci() == bci) {
 284         return data;
 285       }
 286       break;
 287     }
 288     default:
 289       fatal("bad tag = %d", dp->tag());
 290     }
 291   }
 292   return NULL;
 293 }
 294 
 295 // Translate a bci to its corresponding data, or NULL.
 296 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) {
 297   // If m is not NULL we look for a SpeculativeTrapData entry
 298   if (m == NULL) {
 299     ciProfileData* data = data_before(bci);
 300     for ( ; is_valid(data); data = next_data(data)) {
 301       if (data->bci() == bci) {
 302         set_hint_di(dp_to_di(data->dp()));
 303         return data;
 304       } else if (data->bci() > bci) {
 305         break;
 306       }
 307     }
 308   }
 309   bool two_free_slots = false;
 310   ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots);
 311   if (result != NULL) {
 312     return result;
 313   }
 314   if (m != NULL && !two_free_slots) {
 315     // We were looking for a SpeculativeTrapData entry we didn't
 316     // find. Room is not available for more SpeculativeTrapData
 317     // entries, look in the non SpeculativeTrapData entries.
 318     return bci_to_data(bci, NULL);
 319   }
 320   return NULL;
 321 }
 322 
 323 // Conservatively decode the trap_state of a ciProfileData.
 324 int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
 325   typedef Deoptimization::DeoptReason DR_t;
 326   int per_bc_reason
 327     = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
 328   if (trap_count(reason) == 0) {
 329     // Impossible for this trap to have occurred, regardless of trap_state.
 330     // Note:  This happens if the MDO is empty.
 331     return 0;
 332   } else if (per_bc_reason == Deoptimization::Reason_none) {
 333     // We cannot conclude anything; a trap happened somewhere, maybe here.
 334     return -1;
 335   } else if (data == NULL) {
 336     // No profile here, not even an extra_data record allocated on the fly.
 337     // If there are empty extra_data records, and there had been a trap,
 338     // there would have been a non-null data pointer.  If there are no
 339     // free extra_data records, we must return a conservative -1.
 340     if (_saw_free_extra_data)
 341       return 0;                 // Q.E.D.
 342     else
 343       return -1;                // bail with a conservative answer
 344   } else {
 345     return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
 346   }
 347 }
 348 
 349 int ciMethodData::trap_recompiled_at(ciProfileData* data) {
 350   if (data == NULL) {
 351     return (_saw_free_extra_data? 0: -1);  // (see previous method)
 352   } else {
 353     return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0;
 354   }
 355 }
 356 
 357 void ciMethodData::clear_escape_info() {
 358   VM_ENTRY_MARK;
 359   MethodData* mdo = get_MethodData();
 360   if (mdo != NULL) {
 361     mdo->clear_escape_info();
 362     ArgInfoData *aid = arg_info();
 363     int arg_count = (aid == NULL) ? 0 : aid->number_of_args();
 364     for (int i = 0; i < arg_count; i++) {
 365       set_arg_modified(i, 0);
 366     }
 367   }
 368   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
 369 }
 370 
 371 // copy our escape info to the MethodData* if it exists
 372 void ciMethodData::update_escape_info() {
 373   VM_ENTRY_MARK;
 374   MethodData* mdo = get_MethodData();
 375   if ( mdo != NULL) {
 376     mdo->set_eflags(_eflags);
 377     mdo->set_arg_local(_arg_local);
 378     mdo->set_arg_stack(_arg_stack);
 379     mdo->set_arg_returned(_arg_returned);
 380     int arg_count = mdo->method()->size_of_parameters();
 381     for (int i = 0; i < arg_count; i++) {
 382       mdo->set_arg_modified(i, arg_modified(i));
 383     }
 384   }
 385 }
 386 
 387 void ciMethodData::set_compilation_stats(short loops, short blocks) {
 388   VM_ENTRY_MARK;
 389   MethodData* mdo = get_MethodData();
 390   if (mdo != NULL) {
 391     mdo->set_num_loops(loops);
 392     mdo->set_num_blocks(blocks);
 393   }
 394 }
 395 
 396 void ciMethodData::set_would_profile(bool p) {
 397   VM_ENTRY_MARK;
 398   MethodData* mdo = get_MethodData();
 399   if (mdo != NULL) {
 400     mdo->set_would_profile(p);
 401   }
 402 }
 403 
 404 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) {
 405   VM_ENTRY_MARK;
 406   MethodData* mdo = get_MethodData();
 407   if (mdo != NULL) {
 408     ProfileData* data = mdo->bci_to_data(bci);
 409     if (data != NULL) {
 410       if (data->is_CallTypeData()) {
 411         data->as_CallTypeData()->set_argument_type(i, k->get_Klass());
 412       } else {
 413         assert(data->is_VirtualCallTypeData(), "no arguments!");
 414         data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass());
 415       }
 416     }
 417   }
 418 }
 419 
 420 void ciMethodData::set_parameter_type(int i, ciKlass* k) {
 421   VM_ENTRY_MARK;
 422   MethodData* mdo = get_MethodData();
 423   if (mdo != NULL) {
 424     mdo->parameters_type_data()->set_type(i, k->get_Klass());
 425   }
 426 }
 427 
 428 void ciMethodData::set_return_type(int bci, ciKlass* k) {
 429   VM_ENTRY_MARK;
 430   MethodData* mdo = get_MethodData();
 431   if (mdo != NULL) {
 432     ProfileData* data = mdo->bci_to_data(bci);
 433     if (data != NULL) {
 434       if (data->is_CallTypeData()) {
 435         data->as_CallTypeData()->set_return_type(k->get_Klass());
 436       } else {
 437         assert(data->is_VirtualCallTypeData(), "no arguments!");
 438         data->as_VirtualCallTypeData()->set_return_type(k->get_Klass());
 439       }
 440     }
 441   }
 442 }
 443 
 444 bool ciMethodData::has_escape_info() {
 445   return eflag_set(MethodData::estimated);
 446 }
 447 
 448 void ciMethodData::set_eflag(MethodData::EscapeFlag f) {
 449   set_bits(_eflags, f);
 450 }
 451 
 452 void ciMethodData::clear_eflag(MethodData::EscapeFlag f) {
 453   clear_bits(_eflags, f);
 454 }
 455 
 456 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const {
 457   return mask_bits(_eflags, f) != 0;
 458 }
 459 
 460 void ciMethodData::set_arg_local(int i) {
 461   set_nth_bit(_arg_local, i);
 462 }
 463 
 464 void ciMethodData::set_arg_stack(int i) {
 465   set_nth_bit(_arg_stack, i);
 466 }
 467 
 468 void ciMethodData::set_arg_returned(int i) {
 469   set_nth_bit(_arg_returned, i);
 470 }
 471 
 472 void ciMethodData::set_arg_modified(int arg, uint val) {
 473   ArgInfoData *aid = arg_info();
 474   if (aid == NULL)
 475     return;
 476   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 477   aid->set_arg_modified(arg, val);
 478 }
 479 
 480 bool ciMethodData::is_arg_local(int i) const {
 481   return is_set_nth_bit(_arg_local, i);
 482 }
 483 
 484 bool ciMethodData::is_arg_stack(int i) const {
 485   return is_set_nth_bit(_arg_stack, i);
 486 }
 487 
 488 bool ciMethodData::is_arg_returned(int i) const {
 489   return is_set_nth_bit(_arg_returned, i);
 490 }
 491 
 492 uint ciMethodData::arg_modified(int arg) const {
 493   ArgInfoData *aid = arg_info();
 494   if (aid == NULL)
 495     return 0;
 496   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 497   return aid->arg_modified(arg);
 498 }
 499 
 500 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) {
 501   // Get offset within MethodData* of the data array
 502   ByteSize data_offset = MethodData::data_offset();
 503 
 504   // Get cell offset of the ProfileData within data array
 505   int cell_offset = dp_to_di(data->dp());
 506 
 507   // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
 508   int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data);
 509 
 510   return in_ByteSize(offset);
 511 }
 512 
 513 ciArgInfoData *ciMethodData::arg_info() const {
 514   // Should be last, have to skip all traps.
 515   DataLayout* dp  = extra_data_base();
 516   DataLayout* end = args_data_limit();
 517   for (; dp < end; dp = MethodData::next_extra(dp)) {
 518     if (dp->tag() == DataLayout::arg_info_data_tag)
 519       return new ciArgInfoData(dp);
 520   }
 521   return NULL;
 522 }
 523 
 524 
 525 // Implementation of the print method.
 526 void ciMethodData::print_impl(outputStream* st) {
 527   ciMetadata::print_impl(st);
 528 }
 529 
 530 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) {
 531   if (k != NULL) {
 532     if (round == 0) {
 533       count++;
 534     } else {
 535       out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)), k->name()->as_quoted_ascii());
 536     }
 537   }
 538 }
 539 
 540 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) {
 541   for (uint i = 0; i < vdata->row_limit(); i++) {
 542     dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i));
 543   }
 544 }
 545 
 546 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) {
 547   if (call_type_data->has_arguments()) {
 548     for (int i = 0; i < call_type_data->number_of_arguments(); i++) {
 549       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));
 550     }
 551   }
 552   if (call_type_data->has_return()) {
 553     dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type());
 554   }
 555 }
 556 
 557 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) {
 558   DataLayout* dp  = extra_data_base();
 559   DataLayout* end = args_data_limit();
 560 
 561   for (;dp < end; dp = MethodData::next_extra(dp)) {
 562     switch(dp->tag()) {
 563     case DataLayout::no_tag:
 564     case DataLayout::arg_info_data_tag:
 565       return;
 566     case DataLayout::bit_data_tag:
 567       break;
 568     case DataLayout::speculative_trap_data_tag: {
 569       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 570       ciMethod* m = data->method();
 571       if (m != NULL) {
 572         if (round == 0) {
 573           count++;
 574         } else {
 575           out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t)));
 576           m->dump_name_as_ascii(out);
 577         }
 578       }
 579       break;
 580     }
 581     default:
 582       fatal("bad tag = %d", dp->tag());
 583     }
 584   }
 585 }
 586 
 587 void ciMethodData::dump_replay_data(outputStream* out) {
 588   ResourceMark rm;
 589   MethodData* mdo = get_MethodData();
 590   Method* method = mdo->method();
 591   Klass* holder = method->method_holder();
 592   out->print("ciMethodData %s %s %s %d %d",
 593              holder->name()->as_quoted_ascii(),
 594              method->name()->as_quoted_ascii(),
 595              method->signature()->as_quoted_ascii(),
 596              _state,
 597              current_mileage());
 598 
 599   // dump the contents of the MDO header as raw data
 600   unsigned char* orig = (unsigned char*)&_orig;
 601   int length = sizeof(_orig);
 602   out->print(" orig %d", length);
 603   for (int i = 0; i < length; i++) {
 604     out->print(" %d", orig[i]);
 605   }
 606 
 607   // dump the MDO data as raw data
 608   int elements = (data_size() + extra_data_size()) / sizeof(intptr_t);
 609   out->print(" data %d", elements);
 610   for (int i = 0; i < elements; i++) {
 611     // We could use INTPTR_FORMAT here but that's zero justified
 612     // which makes comparing it with the SA version of this output
 613     // harder. data()'s element type is intptr_t.
 614     out->print(" " INTPTRNZ_FORMAT, data()[i]);
 615   }
 616 
 617   // The MDO contained oop references as ciObjects, so scan for those
 618   // and emit pairs of offset and klass name so that they can be
 619   // reconstructed at runtime.  The first round counts the number of
 620   // oop references and the second actually emits them.
 621   ciParametersTypeData* parameters = parameters_type_data();
 622   for (int count = 0, round = 0; round < 2; round++) {
 623     if (round == 1) out->print(" oops %d", count);
 624     ProfileData* pdata = first_data();
 625     for ( ; is_valid(pdata); pdata = next_data(pdata)) {
 626       if (pdata->is_VirtualCallData()) {
 627         ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
 628         dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata);
 629         if (pdata->is_VirtualCallTypeData()) {
 630           ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata;
 631           dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data);
 632         }
 633       } else if (pdata->is_ReceiverTypeData()) {
 634         ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
 635         dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata);
 636       } else if (pdata->is_CallTypeData()) {
 637           ciCallTypeData* call_type_data = (ciCallTypeData*)pdata;
 638           dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data);
 639       }
 640     }
 641     if (parameters != NULL) {
 642       for (int i = 0; i < parameters->number_of_parameters(); i++) {
 643         dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i));
 644       }
 645     }
 646   }
 647   for (int count = 0, round = 0; round < 2; round++) {
 648     if (round == 1) out->print(" methods %d", count);
 649     dump_replay_data_extra_data_helper(out, round, count);
 650   }
 651   out->cr();
 652 }
 653 
 654 #ifndef PRODUCT
 655 void ciMethodData::print() {
 656   print_data_on(tty);
 657 }
 658 
 659 void ciMethodData::print_data_on(outputStream* st) {
 660   ResourceMark rm;
 661   ciParametersTypeData* parameters = parameters_type_data();
 662   if (parameters != NULL) {
 663     parameters->print_data_on(st);
 664   }
 665   ciProfileData* data;
 666   for (data = first_data(); is_valid(data); data = next_data(data)) {
 667     st->print("%d", dp_to_di(data->dp()));
 668     st->fill_to(6);
 669     data->print_data_on(st);
 670   }
 671   st->print_cr("--- Extra data:");
 672   DataLayout* dp  = extra_data_base();
 673   DataLayout* end = args_data_limit();
 674   for (;; dp = MethodData::next_extra(dp)) {
 675     assert(dp < end, "moved past end of extra data");
 676     switch (dp->tag()) {
 677     case DataLayout::no_tag:
 678       continue;
 679     case DataLayout::bit_data_tag:
 680       data = new BitData(dp);
 681       break;
 682     case DataLayout::arg_info_data_tag:
 683       data = new ciArgInfoData(dp);
 684       dp = end; // ArgInfoData is at the end of extra data section.
 685       break;
 686     case DataLayout::speculative_trap_data_tag:
 687       data = new ciSpeculativeTrapData(dp);
 688       break;
 689     default:
 690       fatal("unexpected tag %d", dp->tag());
 691     }
 692     st->print("%d", dp_to_di(data->dp()));
 693     st->fill_to(6);
 694     data->print_data_on(st);
 695     if (dp >= end) return;
 696   }
 697 }
 698 
 699 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) {
 700   if (TypeEntries::is_type_none(k)) {
 701     st->print("none");
 702   } else if (TypeEntries::is_type_unknown(k)) {
 703     st->print("unknown");
 704   } else {
 705     valid_ciklass(k)->print_name_on(st);
 706   }
 707   if (TypeEntries::was_null_seen(k)) {
 708     st->print(" (null seen)");
 709   }
 710 }
 711 
 712 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const {
 713   for (int i = 0; i < number_of_entries(); i++) {
 714     _pd->tab(st);
 715     st->print("%d: stack (%u) ", i, stack_slot(i));
 716     print_ciklass(st, type(i));
 717     st->cr();
 718   }
 719 }
 720 
 721 void ciReturnTypeEntry::print_data_on(outputStream* st) const {
 722   _pd->tab(st);
 723   st->print("ret ");
 724   print_ciklass(st, type());
 725   st->cr();
 726 }
 727 
 728 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 729   print_shared(st, "ciCallTypeData", extra);
 730   if (has_arguments()) {
 731     tab(st, true);
 732     st->print_cr("argument types");
 733     args()->print_data_on(st);
 734   }
 735   if (has_return()) {
 736     tab(st, true);
 737     st->print_cr("return type");
 738     ret()->print_data_on(st);
 739   }
 740 }
 741 
 742 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const {
 743   uint row;
 744   int entries = 0;
 745   for (row = 0; row < row_limit(); row++) {
 746     if (receiver(row) != NULL)  entries++;
 747   }
 748   st->print_cr("count(%u) entries(%u)", count(), entries);
 749   for (row = 0; row < row_limit(); row++) {
 750     if (receiver(row) != NULL) {
 751       tab(st);
 752       receiver(row)->print_name_on(st);
 753       st->print_cr("(%u)", receiver_count(row));
 754     }
 755   }
 756 }
 757 
 758 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const {
 759   print_shared(st, "ciReceiverTypeData", extra);
 760   print_receiver_data_on(st);
 761 }
 762 
 763 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const {
 764   print_shared(st, "ciVirtualCallData", extra);
 765   rtd_super()->print_receiver_data_on(st);
 766 }
 767 
 768 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 769   print_shared(st, "ciVirtualCallTypeData", extra);
 770   rtd_super()->print_receiver_data_on(st);
 771   if (has_arguments()) {
 772     tab(st, true);
 773     st->print("argument types");
 774     args()->print_data_on(st);
 775   }
 776   if (has_return()) {
 777     tab(st, true);
 778     st->print("return type");
 779     ret()->print_data_on(st);
 780   }
 781 }
 782 
 783 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const {
 784   st->print_cr("ciParametersTypeData");
 785   parameters()->print_data_on(st);
 786 }
 787 
 788 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const {
 789   st->print_cr("ciSpeculativeTrapData");
 790   tab(st);
 791   method()->print_short_name(st);
 792   st->cr();
 793 }
 794 #endif