1 /*
   2  * Copyright (c) 2001, 2014, 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(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 = new ciSpeculativeTrapData(dp_dst);
 107       SpeculativeTrapData* data_src = new SpeculativeTrapData(dp_src);
 108 
 109       data_dst->translate_from(data_src);
 110 
 111 #ifdef ASSERT
 112       SpeculativeTrapData* data_src2 = new SpeculativeTrapData(dp_src);
 113       assert(data_src2->method() == data_src->method() && data_src2->bci() == data_src->bci(), "entries changed while translating");
 114 #endif
 115 
 116       break;
 117     }
 118     case DataLayout::bit_data_tag:
 119       break;
 120     case DataLayout::no_tag:
 121     case DataLayout::arg_info_data_tag:
 122       // An empty slot or ArgInfoData entry marks the end of the trap data
 123       return;
 124     default:
 125       fatal("bad tag = %d", dp_dst->tag());
 126     }
 127   }
 128 }
 129 
 130 void ciMethodData::load_data() {
 131   MethodData* mdo = get_MethodData();
 132   if (mdo == NULL) {
 133     return;
 134   }
 135 
 136   // To do: don't copy the data if it is not "ripe" -- require a minimum #
 137   // of invocations.
 138 
 139   // Snapshot the data -- actually, take an approximate snapshot of
 140   // the data.  Any concurrently executing threads may be changing the
 141   // data as we copy it.
 142   Copy::disjoint_words((HeapWord*) mdo,
 143                        (HeapWord*) &_orig,
 144                        sizeof(_orig) / HeapWordSize);
 145   Arena* arena = CURRENT_ENV->arena();
 146   _data_size = mdo->data_size();
 147   _extra_data_size = mdo->extra_data_size();
 148   int total_size = _data_size + _extra_data_size;
 149   _data = (intptr_t *) arena->Amalloc(total_size);
 150   Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize);
 151 
 152   // Traverse the profile data, translating any oops into their
 153   // ci equivalents.
 154   ResourceMark rm;
 155   ciProfileData* ci_data = first_data();
 156   ProfileData* data = mdo->first_data();
 157   while (is_valid(ci_data)) {
 158     ci_data->translate_from(data);
 159     ci_data = next_data(ci_data);
 160     data = mdo->next_data(data);
 161   }
 162   if (mdo->parameters_type_data() != NULL) {
 163     _parameters = data_layout_at(mdo->parameters_type_data_di());
 164     ciParametersTypeData* parameters = new ciParametersTypeData(_parameters);
 165     parameters->translate_from(mdo->parameters_type_data());
 166   }
 167 
 168   load_extra_data();
 169 
 170   // Note:  Extra data are all BitData, and do not need translation.
 171   _current_mileage = MethodData::mileage_of(mdo->method());
 172   _invocation_counter = mdo->invocation_count();
 173   _backedge_counter = mdo->backedge_count();
 174   _state = mdo->is_mature()? mature_state: immature_state;
 175 
 176   _eflags = mdo->eflags();
 177   _arg_local = mdo->arg_local();
 178   _arg_stack = mdo->arg_stack();
 179   _arg_returned  = mdo->arg_returned();
 180 #ifndef PRODUCT
 181   if (ReplayCompiles) {
 182     ciReplay::initialize(this);
 183   }
 184 #endif
 185 }
 186 
 187 void ciReceiverTypeData::translate_receiver_data_from(const ProfileData* data) {
 188   for (uint row = 0; row < row_limit(); row++) {
 189     Klass* k = data->as_ReceiverTypeData()->receiver(row);
 190     if (k != NULL) {
 191       ciKlass* klass = CURRENT_ENV->get_klass(k);
 192       CURRENT_ENV->ensure_metadata_alive(klass);
 193       set_receiver(row, klass);
 194     }
 195   }
 196 }
 197 
 198 
 199 void ciTypeStackSlotEntries::translate_type_data_from(const TypeStackSlotEntries* entries) {
 200   for (int i = 0; i < number_of_entries(); i++) {
 201     intptr_t k = entries->type(i);
 202     TypeStackSlotEntries::set_type(i, translate_klass(k));
 203   }
 204 }
 205 
 206 void ciReturnTypeEntry::translate_type_data_from(const ReturnTypeEntry* ret) {
 207   intptr_t k = ret->type();
 208   set_type(translate_klass(k));
 209 }
 210 
 211 void ciSpeculativeTrapData::translate_from(const ProfileData* data) {
 212   Method* m = data->as_SpeculativeTrapData()->method();
 213   ciMethod* ci_m = CURRENT_ENV->get_method(m);
 214   CURRENT_ENV->ensure_metadata_alive(ci_m);
 215   set_method(ci_m);
 216 }
 217 
 218 // Get the data at an arbitrary (sort of) data index.
 219 ciProfileData* ciMethodData::data_at(int data_index) {
 220   if (out_of_bounds(data_index)) {
 221     return NULL;
 222   }
 223   DataLayout* data_layout = data_layout_at(data_index);
 224 
 225   switch (data_layout->tag()) {
 226   case DataLayout::no_tag:
 227   default:
 228     ShouldNotReachHere();
 229     return NULL;
 230   case DataLayout::bit_data_tag:
 231     return new ciBitData(data_layout);
 232   case DataLayout::counter_data_tag:
 233     return new ciCounterData(data_layout);
 234   case DataLayout::jump_data_tag:
 235     return new ciJumpData(data_layout);
 236   case DataLayout::receiver_type_data_tag:
 237     return new ciReceiverTypeData(data_layout);
 238   case DataLayout::virtual_call_data_tag:
 239     return new ciVirtualCallData(data_layout);
 240   case DataLayout::ret_data_tag:
 241     return new ciRetData(data_layout);
 242   case DataLayout::branch_data_tag:
 243     return new ciBranchData(data_layout);
 244   case DataLayout::multi_branch_data_tag:
 245     return new ciMultiBranchData(data_layout);
 246   case DataLayout::arg_info_data_tag:
 247     return new ciArgInfoData(data_layout);
 248   case DataLayout::call_type_data_tag:
 249     return new ciCallTypeData(data_layout);
 250   case DataLayout::virtual_call_type_data_tag:
 251     return new ciVirtualCallTypeData(data_layout);
 252   case DataLayout::parameters_type_data_tag:
 253     return new ciParametersTypeData(data_layout);
 254   };
 255 }
 256 
 257 // Iteration over data.
 258 ciProfileData* ciMethodData::next_data(ciProfileData* current) {
 259   int current_index = dp_to_di(current->dp());
 260   int next_index = current_index + current->size_in_bytes();
 261   ciProfileData* next = data_at(next_index);
 262   return next;
 263 }
 264 
 265 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) {
 266   DataLayout* dp  = extra_data_base();
 267   DataLayout* end = args_data_limit();
 268   two_free_slots = false;
 269   for (;dp < end; dp = MethodData::next_extra(dp)) {
 270     switch(dp->tag()) {
 271     case DataLayout::no_tag:
 272       _saw_free_extra_data = true;  // observed an empty slot (common case)
 273       two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag);
 274       return NULL;
 275     case DataLayout::arg_info_data_tag:
 276       return NULL; // ArgInfoData is at the end of extra data section.
 277     case DataLayout::bit_data_tag:
 278       if (m == NULL && dp->bci() == bci) {
 279         return new ciBitData(dp);
 280       }
 281       break;
 282     case DataLayout::speculative_trap_data_tag: {
 283       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 284       // data->method() might be null if the MDO is snapshotted
 285       // concurrently with a trap
 286       if (m != NULL && data->method() == m && dp->bci() == bci) {
 287         return data;
 288       }
 289       break;
 290     }
 291     default:
 292       fatal("bad tag = %d", dp->tag());
 293     }
 294   }
 295   return NULL;
 296 }
 297 
 298 // Translate a bci to its corresponding data, or NULL.
 299 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) {
 300   // If m is not NULL we look for a SpeculativeTrapData entry
 301   if (m == NULL) {
 302     ciProfileData* data = data_before(bci);
 303     for ( ; is_valid(data); data = next_data(data)) {
 304       if (data->bci() == bci) {
 305         set_hint_di(dp_to_di(data->dp()));
 306         return data;
 307       } else if (data->bci() > bci) {
 308         break;
 309       }
 310     }
 311   }
 312   bool two_free_slots = false;
 313   ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots);
 314   if (result != NULL) {
 315     return result;
 316   }
 317   if (m != NULL && !two_free_slots) {
 318     // We were looking for a SpeculativeTrapData entry we didn't
 319     // find. Room is not available for more SpeculativeTrapData
 320     // entries, look in the non SpeculativeTrapData entries.
 321     return bci_to_data(bci, NULL);
 322   }
 323   return NULL;
 324 }
 325 
 326 // Conservatively decode the trap_state of a ciProfileData.
 327 int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
 328   typedef Deoptimization::DeoptReason DR_t;
 329   int per_bc_reason
 330     = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
 331   if (trap_count(reason) == 0) {
 332     // Impossible for this trap to have occurred, regardless of trap_state.
 333     // Note:  This happens if the MDO is empty.
 334     return 0;
 335   } else if (per_bc_reason == Deoptimization::Reason_none) {
 336     // We cannot conclude anything; a trap happened somewhere, maybe here.
 337     return -1;
 338   } else if (data == NULL) {
 339     // No profile here, not even an extra_data record allocated on the fly.
 340     // If there are empty extra_data records, and there had been a trap,
 341     // there would have been a non-null data pointer.  If there are no
 342     // free extra_data records, we must return a conservative -1.
 343     if (_saw_free_extra_data)
 344       return 0;                 // Q.E.D.
 345     else
 346       return -1;                // bail with a conservative answer
 347   } else {
 348     return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
 349   }
 350 }
 351 
 352 int ciMethodData::trap_recompiled_at(ciProfileData* data) {
 353   if (data == NULL) {
 354     return (_saw_free_extra_data? 0: -1);  // (see previous method)
 355   } else {
 356     return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0;
 357   }
 358 }
 359 
 360 void ciMethodData::clear_escape_info() {
 361   VM_ENTRY_MARK;
 362   MethodData* mdo = get_MethodData();
 363   if (mdo != NULL) {
 364     mdo->clear_escape_info();
 365     ArgInfoData *aid = arg_info();
 366     int arg_count = (aid == NULL) ? 0 : aid->number_of_args();
 367     for (int i = 0; i < arg_count; i++) {
 368       set_arg_modified(i, 0);
 369     }
 370   }
 371   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
 372 }
 373 
 374 // copy our escape info to the MethodData* if it exists
 375 void ciMethodData::update_escape_info() {
 376   VM_ENTRY_MARK;
 377   MethodData* mdo = get_MethodData();
 378   if ( mdo != NULL) {
 379     mdo->set_eflags(_eflags);
 380     mdo->set_arg_local(_arg_local);
 381     mdo->set_arg_stack(_arg_stack);
 382     mdo->set_arg_returned(_arg_returned);
 383     int arg_count = mdo->method()->size_of_parameters();
 384     for (int i = 0; i < arg_count; i++) {
 385       mdo->set_arg_modified(i, arg_modified(i));
 386     }
 387   }
 388 }
 389 
 390 void ciMethodData::set_compilation_stats(short loops, short blocks) {
 391   VM_ENTRY_MARK;
 392   MethodData* mdo = get_MethodData();
 393   if (mdo != NULL) {
 394     mdo->set_num_loops(loops);
 395     mdo->set_num_blocks(blocks);
 396   }
 397 }
 398 
 399 void ciMethodData::set_would_profile(bool p) {
 400   VM_ENTRY_MARK;
 401   MethodData* mdo = get_MethodData();
 402   if (mdo != NULL) {
 403     mdo->set_would_profile(p);
 404   }
 405 }
 406 
 407 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) {
 408   VM_ENTRY_MARK;
 409   MethodData* mdo = get_MethodData();
 410   if (mdo != NULL) {
 411     ProfileData* data = mdo->bci_to_data(bci);
 412     if (data->is_CallTypeData()) {
 413       data->as_CallTypeData()->set_argument_type(i, k->get_Klass());
 414     } else {
 415       assert(data->is_VirtualCallTypeData(), "no arguments!");
 416       data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass());
 417     }
 418   }
 419 }
 420 
 421 void ciMethodData::set_parameter_type(int i, ciKlass* k) {
 422   VM_ENTRY_MARK;
 423   MethodData* mdo = get_MethodData();
 424   if (mdo != NULL) {
 425     mdo->parameters_type_data()->set_type(i, k->get_Klass());
 426   }
 427 }
 428 
 429 void ciMethodData::set_return_type(int bci, ciKlass* k) {
 430   VM_ENTRY_MARK;
 431   MethodData* mdo = get_MethodData();
 432   if (mdo != NULL) {
 433     ProfileData* data = mdo->bci_to_data(bci);
 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 bool ciMethodData::has_escape_info() {
 444   return eflag_set(MethodData::estimated);
 445 }
 446 
 447 void ciMethodData::set_eflag(MethodData::EscapeFlag f) {
 448   set_bits(_eflags, f);
 449 }
 450 
 451 void ciMethodData::clear_eflag(MethodData::EscapeFlag f) {
 452   clear_bits(_eflags, f);
 453 }
 454 
 455 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const {
 456   return mask_bits(_eflags, f) != 0;
 457 }
 458 
 459 void ciMethodData::set_arg_local(int i) {
 460   set_nth_bit(_arg_local, i);
 461 }
 462 
 463 void ciMethodData::set_arg_stack(int i) {
 464   set_nth_bit(_arg_stack, i);
 465 }
 466 
 467 void ciMethodData::set_arg_returned(int i) {
 468   set_nth_bit(_arg_returned, i);
 469 }
 470 
 471 void ciMethodData::set_arg_modified(int arg, uint val) {
 472   ArgInfoData *aid = arg_info();
 473   if (aid == NULL)
 474     return;
 475   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 476   aid->set_arg_modified(arg, val);
 477 }
 478 
 479 bool ciMethodData::is_arg_local(int i) const {
 480   return is_set_nth_bit(_arg_local, i);
 481 }
 482 
 483 bool ciMethodData::is_arg_stack(int i) const {
 484   return is_set_nth_bit(_arg_stack, i);
 485 }
 486 
 487 bool ciMethodData::is_arg_returned(int i) const {
 488   return is_set_nth_bit(_arg_returned, i);
 489 }
 490 
 491 uint ciMethodData::arg_modified(int arg) const {
 492   ArgInfoData *aid = arg_info();
 493   if (aid == NULL)
 494     return 0;
 495   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 496   return aid->arg_modified(arg);
 497 }
 498 
 499 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) {
 500   // Get offset within MethodData* of the data array
 501   ByteSize data_offset = MethodData::data_offset();
 502 
 503   // Get cell offset of the ProfileData within data array
 504   int cell_offset = dp_to_di(data->dp());
 505 
 506   // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
 507   int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data);
 508 
 509   return in_ByteSize(offset);
 510 }
 511 
 512 ciArgInfoData *ciMethodData::arg_info() const {
 513   // Should be last, have to skip all traps.
 514   DataLayout* dp  = extra_data_base();
 515   DataLayout* end = args_data_limit();
 516   for (; dp < end; dp = MethodData::next_extra(dp)) {
 517     if (dp->tag() == DataLayout::arg_info_data_tag)
 518       return new ciArgInfoData(dp);
 519   }
 520   return NULL;
 521 }
 522 
 523 
 524 // Implementation of the print method.
 525 void ciMethodData::print_impl(outputStream* st) {
 526   ciMetadata::print_impl(st);
 527 }
 528 
 529 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) {
 530   if (k != NULL) {
 531     if (round == 0) {
 532       count++;
 533     } else {
 534       out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)), k->name()->as_quoted_ascii());
 535     }
 536   }
 537 }
 538 
 539 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) {
 540   for (uint i = 0; i < vdata->row_limit(); i++) {
 541     dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i));
 542   }
 543 }
 544 
 545 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) {
 546   if (call_type_data->has_arguments()) {
 547     for (int i = 0; i < call_type_data->number_of_arguments(); i++) {
 548       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));
 549     }
 550   }
 551   if (call_type_data->has_return()) {
 552     dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type());
 553   }
 554 }
 555 
 556 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) {
 557   DataLayout* dp  = extra_data_base();
 558   DataLayout* end = args_data_limit();
 559 
 560   for (;dp < end; dp = MethodData::next_extra(dp)) {
 561     switch(dp->tag()) {
 562     case DataLayout::no_tag:
 563     case DataLayout::arg_info_data_tag:
 564       return;
 565     case DataLayout::bit_data_tag:
 566       break;
 567     case DataLayout::speculative_trap_data_tag: {
 568       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 569       ciMethod* m = data->method();
 570       if (m != NULL) {
 571         if (round == 0) {
 572           count++;
 573         } else {
 574           out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t)));
 575           m->dump_name_as_ascii(out);
 576         }
 577       }
 578       break;
 579     }
 580     default:
 581       fatal("bad tag = %d", dp->tag());
 582     }
 583   }
 584 }
 585 
 586 void ciMethodData::dump_replay_data(outputStream* out) {
 587   ResourceMark rm;
 588   MethodData* mdo = get_MethodData();
 589   Method* method = mdo->method();
 590   Klass* holder = method->method_holder();
 591   out->print("ciMethodData %s %s %s %d %d",
 592              holder->name()->as_quoted_ascii(),
 593              method->name()->as_quoted_ascii(),
 594              method->signature()->as_quoted_ascii(),
 595              _state,
 596              current_mileage());
 597 
 598   // dump the contents of the MDO header as raw data
 599   unsigned char* orig = (unsigned char*)&_orig;
 600   int length = sizeof(_orig);
 601   out->print(" orig %d", length);
 602   for (int i = 0; i < length; i++) {
 603     out->print(" %d", orig[i]);
 604   }
 605 
 606   // dump the MDO data as raw data
 607   int elements = (data_size() + extra_data_size()) / sizeof(intptr_t);
 608   out->print(" data %d", elements);
 609   for (int i = 0; i < elements; i++) {
 610     // We could use INTPTR_FORMAT here but that's a zero justified
 611     // which makes comparing it with the SA version of this output
 612     // harder.
 613 #ifdef _LP64
 614     out->print(" 0x%" FORMAT64_MODIFIER "x", data()[i]);
 615 #else
 616     out->print(" 0x%x", data()[i]);
 617 #endif
 618   }
 619 
 620   // The MDO contained oop references as ciObjects, so scan for those
 621   // and emit pairs of offset and klass name so that they can be
 622   // reconstructed at runtime.  The first round counts the number of
 623   // oop references and the second actually emits them.
 624   ciParametersTypeData* parameters = parameters_type_data();
 625   for (int count = 0, round = 0; round < 2; round++) {
 626     if (round == 1) out->print(" oops %d", count);
 627     ProfileData* pdata = first_data();
 628     for ( ; is_valid(pdata); pdata = next_data(pdata)) {
 629       if (pdata->is_VirtualCallData()) {
 630         ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
 631         dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata);
 632         if (pdata->is_VirtualCallTypeData()) {
 633           ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata;
 634           dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data);
 635         }
 636       } else if (pdata->is_ReceiverTypeData()) {
 637         ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
 638         dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata);
 639       } else if (pdata->is_CallTypeData()) {
 640           ciCallTypeData* call_type_data = (ciCallTypeData*)pdata;
 641           dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data);
 642       }
 643     }
 644     if (parameters != NULL) {
 645       for (int i = 0; i < parameters->number_of_parameters(); i++) {
 646         dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i));
 647       }
 648     }
 649   }
 650   for (int count = 0, round = 0; round < 2; round++) {
 651     if (round == 1) out->print(" methods %d", count);
 652     dump_replay_data_extra_data_helper(out, round, count);
 653   }
 654   out->cr();
 655 }
 656 
 657 #ifndef PRODUCT
 658 void ciMethodData::print() {
 659   print_data_on(tty);
 660 }
 661 
 662 void ciMethodData::print_data_on(outputStream* st) {
 663   ResourceMark rm;
 664   ciParametersTypeData* parameters = parameters_type_data();
 665   if (parameters != NULL) {
 666     parameters->print_data_on(st);
 667   }
 668   ciProfileData* data;
 669   for (data = first_data(); is_valid(data); data = next_data(data)) {
 670     st->print("%d", dp_to_di(data->dp()));
 671     st->fill_to(6);
 672     data->print_data_on(st);
 673   }
 674   st->print_cr("--- Extra data:");
 675   DataLayout* dp  = extra_data_base();
 676   DataLayout* end = args_data_limit();
 677   for (;; dp = MethodData::next_extra(dp)) {
 678     assert(dp < end, "moved past end of extra data");
 679     switch (dp->tag()) {
 680     case DataLayout::no_tag:
 681       continue;
 682     case DataLayout::bit_data_tag:
 683       data = new BitData(dp);
 684       break;
 685     case DataLayout::arg_info_data_tag:
 686       data = new ciArgInfoData(dp);
 687       dp = end; // ArgInfoData is at the end of extra data section.
 688       break;
 689     case DataLayout::speculative_trap_data_tag:
 690       data = new ciSpeculativeTrapData(dp);
 691       break;
 692     default:
 693       fatal("unexpected tag %d", dp->tag());
 694     }
 695     st->print("%d", dp_to_di(data->dp()));
 696     st->fill_to(6);
 697     data->print_data_on(st);
 698     if (dp >= end) return;
 699   }
 700 }
 701 
 702 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) {
 703   if (TypeEntries::is_type_none(k)) {
 704     st->print("none");
 705   } else if (TypeEntries::is_type_unknown(k)) {
 706     st->print("unknown");
 707   } else {
 708     valid_ciklass(k)->print_name_on(st);
 709   }
 710   if (TypeEntries::was_null_seen(k)) {
 711     st->print(" (null seen)");
 712   }
 713 }
 714 
 715 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const {
 716   for (int i = 0; i < number_of_entries(); i++) {
 717     _pd->tab(st);
 718     st->print("%d: stack (%u) ", i, stack_slot(i));
 719     print_ciklass(st, type(i));
 720     st->cr();
 721   }
 722 }
 723 
 724 void ciReturnTypeEntry::print_data_on(outputStream* st) const {
 725   _pd->tab(st);
 726   st->print("ret ");
 727   print_ciklass(st, type());
 728   st->cr();
 729 }
 730 
 731 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 732   print_shared(st, "ciCallTypeData", extra);
 733   if (has_arguments()) {
 734     tab(st, true);
 735     st->print_cr("argument types");
 736     args()->print_data_on(st);
 737   }
 738   if (has_return()) {
 739     tab(st, true);
 740     st->print_cr("return type");
 741     ret()->print_data_on(st);
 742   }
 743 }
 744 
 745 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const {
 746   uint row;
 747   int entries = 0;
 748   for (row = 0; row < row_limit(); row++) {
 749     if (receiver(row) != NULL)  entries++;
 750   }
 751   st->print_cr("count(%u) entries(%u)", count(), entries);
 752   for (row = 0; row < row_limit(); row++) {
 753     if (receiver(row) != NULL) {
 754       tab(st);
 755       receiver(row)->print_name_on(st);
 756       st->print_cr("(%u)", receiver_count(row));
 757     }
 758   }
 759 }
 760 
 761 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const {
 762   print_shared(st, "ciReceiverTypeData", extra);
 763   print_receiver_data_on(st);
 764 }
 765 
 766 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const {
 767   print_shared(st, "ciVirtualCallData", extra);
 768   rtd_super()->print_receiver_data_on(st);
 769 }
 770 
 771 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 772   print_shared(st, "ciVirtualCallTypeData", extra);
 773   rtd_super()->print_receiver_data_on(st);
 774   if (has_arguments()) {
 775     tab(st, true);
 776     st->print("argument types");
 777     args()->print_data_on(st);
 778   }
 779   if (has_return()) {
 780     tab(st, true);
 781     st->print("return type");
 782     ret()->print_data_on(st);
 783   }
 784 }
 785 
 786 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const {
 787   st->print_cr("ciParametersTypeData");
 788   parameters()->print_data_on(st);
 789 }
 790 
 791 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const {
 792   st->print_cr("ciSpeculativeTrapData");
 793   tab(st);
 794   method()->print_short_name(st);
 795   st->cr();
 796 }
 797 #endif