Example #1
0
void ciMethodData::print_data_on(outputStream* st) {
  ResourceMark rm;
  ciProfileData* data;
  for (data = first_data(); is_valid(data); data = next_data(data)) {
    st->print("%d", dp_to_di(data->dp()));
    st->fill_to(6);
    data->print_data_on(st);
  }
  st->print_cr("--- Extra data:");
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::no_tag)  continue;
    if (dp->tag() == DataLayout::bit_data_tag) {
      data = new BitData(dp);
    } else {
      assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo");
      data = new ciArgInfoData(dp);
      dp = end; // ArgInfoData is at the end of extra data section.
    }
    st->print("%d", dp_to_di(data->dp()));
    st->fill_to(6);
    data->print_data_on(st);
  }
}
Example #2
0
// Translate a bci to its corresponding data, or NULL.
ciProfileData* ciMethodData::bci_to_data(int bci) {
  ciProfileData* data = data_before(bci);
  for ( ; is_valid(data); data = next_data(data)) {
    if (data->bci() == bci) {
      set_hint_di(dp_to_di(data->dp()));
      return data;
    } else if (data->bci() > bci) {
      break;
    }
  }
  // bci_to_extra_data(bci) ...
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::no_tag) {
      _saw_free_extra_data = true;  // observed an empty slot (common case)
      return NULL;
    }
    if (dp->tag() == DataLayout::arg_info_data_tag) {
      break; // ArgInfoData is at the end of extra data section.
    }
    if (dp->bci() == bci) {
      assert(dp->tag() == DataLayout::bit_data_tag, "sane");
      return new ciBitData(dp);
    }
  }
  return NULL;
}
Example #3
0
ciArgInfoData *ciMethodData::arg_info() const {
  // Should be last, have to skip all traps.
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::arg_info_data_tag)
      return new ciArgInfoData(dp);
  }
  return NULL;
}
Example #4
0
// Get the data at an arbitrary (sort of) data index.
ProfileData* methodDataOopDesc::data_at(int data_index) {
  if (out_of_bounds(data_index)) {
    return NULL;
  }
  DataLayout* data_layout = data_layout_at(data_index);
  return data_layout->data_in();
}
Example #5
0
// Get the data at an arbitrary (sort of) data index.
ProfileData* MethodData::data_at(int data_index) const {
  if (out_of_bounds(data_index)) {
    return NULL;
  }
  DataLayout* data_layout = data_layout_at(data_index);
  return data_layout->data_in();
}
Example #6
0
// Get the data at an arbitrary (sort of) data index.
ciProfileData* ciMethodData::data_at(int data_index) {
  if (out_of_bounds(data_index)) {
    return NULL;
  }
  DataLayout* data_layout = data_layout_at(data_index);

  switch (data_layout->tag()) {
  case DataLayout::no_tag:
  default:
    ShouldNotReachHere();
    return NULL;
  case DataLayout::bit_data_tag:
    return new ciBitData(data_layout);
  case DataLayout::counter_data_tag:
    return new ciCounterData(data_layout);
  case DataLayout::jump_data_tag:
    return new ciJumpData(data_layout);
  case DataLayout::receiver_type_data_tag:
    return new ciReceiverTypeData(data_layout);
  case DataLayout::virtual_call_data_tag:
    return new ciVirtualCallData(data_layout);
  case DataLayout::ret_data_tag:
    return new ciRetData(data_layout);
  case DataLayout::branch_data_tag:
    return new ciBranchData(data_layout);
  case DataLayout::multi_branch_data_tag:
    return new ciMultiBranchData(data_layout);
  case DataLayout::arg_info_data_tag:
    return new ciArgInfoData(data_layout);
  };
}
// Get the data at an arbitrary (sort of) data index.
ProfileData* methodDataOopDesc::data_at(int data_index) {
  if (out_of_bounds(data_index)) {
    return NULL;
  }
  DataLayout* data_layout = data_layout_at(data_index);
  
  switch (data_layout->tag()) {
  case DataLayout::no_tag:
  default:
    ShouldNotReachHere();
    return NULL;
  case DataLayout::bit_data_tag:
    return new BitData(data_layout);
  case DataLayout::counter_data_tag:
    return new CounterData(data_layout);
  case DataLayout::jump_data_tag:
    return new JumpData(data_layout);
  case DataLayout::virtual_call_data_tag:
    return new VirtualCallData(data_layout);
  case DataLayout::ret_data_tag:
    return new RetData(data_layout);
  case DataLayout::branch_data_tag:
    return new BranchData(data_layout);
  case DataLayout::multi_branch_data_tag:
    return new MultiBranchData(data_layout);
  };
}
Example #8
0
 ciProfileData* data_before(int bci) {
   // avoid SEGV on this edge case
   if (data_size() == 0)
     return NULL;
   int hint = hint_di();
   if (data_layout_at(hint)->bci() <= bci)
     return data_at(hint);
   return first_data();
 }
void ciMethodData::load_data() {
  MethodData* mdo = get_MethodData();
  if (mdo == NULL) {
    return;
  }

  // To do: don't copy the data if it is not "ripe" -- require a minimum #
  // of invocations.

  // Snapshot the data -- actually, take an approximate snapshot of
  // the data.  Any concurrently executing threads may be changing the
  // data as we copy it.
  Copy::disjoint_words((HeapWord*) mdo,
                       (HeapWord*) &_orig,
                       sizeof(_orig) / HeapWordSize);
  Arena* arena = CURRENT_ENV->arena();
  _data_size = mdo->data_size();
  _extra_data_size = mdo->extra_data_size();
  int total_size = _data_size + _extra_data_size;
  _data = (intptr_t *) arena->Amalloc(total_size);
  Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize);

  // Traverse the profile data, translating any oops into their
  // ci equivalents.
  ResourceMark rm;
  ciProfileData* ci_data = first_data();
  ProfileData* data = mdo->first_data();
  while (is_valid(ci_data)) {
    ci_data->translate_from(data);
    ci_data = next_data(ci_data);
    data = mdo->next_data(data);
  }
  if (mdo->parameters_type_data() != NULL) {
    _parameters = data_layout_at(mdo->parameters_type_data_di());
    ciParametersTypeData* parameters = new ciParametersTypeData(_parameters);
    parameters->translate_from(mdo->parameters_type_data());
  }

  load_extra_data();

  // Note:  Extra data are all BitData, and do not need translation.
  _current_mileage = MethodData::mileage_of(mdo->method());
  _invocation_counter = mdo->invocation_count();
  _backedge_counter = mdo->backedge_count();
  _state = mdo->is_mature()? mature_state: immature_state;

  _eflags = mdo->eflags();
  _arg_local = mdo->arg_local();
  _arg_stack = mdo->arg_stack();
  _arg_returned  = mdo->arg_returned();
#ifndef PRODUCT
  if (ReplayCompiles) {
    ciReplay::initialize(this);
  }
#endif
}
Example #10
0
// Initialize the methodDataOop corresponding to a given method.
void methodDataOopDesc::initialize(methodHandle method) {
  ResourceMark rm;

  // Set the method back-pointer.
  _method = method();
  set_creation_mileage(mileage_of(method()));

  // Initialize flags and trap history.
  _nof_decompiles = 0;
  _nof_overflow_recompiles = 0;
  _nof_overflow_traps = 0;
  assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align");
  Copy::zero_to_words((HeapWord*) &_trap_hist,
                      sizeof(_trap_hist) / sizeof(HeapWord));

  // Go through the bytecodes and allocate and initialize the
  // corresponding data cells.
  int data_size = 0;
  int empty_bc_count = 0;  // number of bytecodes lacking data
  BytecodeStream stream(method);
  Bytecodes::Code c;
  while ((c = stream.next()) >= 0) {
    int size_in_bytes = initialize_data(&stream, data_size);
    data_size += size_in_bytes;
    if (size_in_bytes == 0)  empty_bc_count += 1;
  }
  _data_size = data_size;
  int object_size = in_bytes(data_offset()) + data_size;

  // Add some extra DataLayout cells (at least one) to track stray traps.
  int extra_data_count = compute_extra_data_count(data_size, empty_bc_count);
  int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0);

  // Add a cell to record information about modified arguments.
  // Set up _args_modified array after traps cells so that
  // the code for traps cells works.
  DataLayout *dp = data_layout_at(data_size + extra_size);

  int arg_size = method->size_of_parameters();
  dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1);

  object_size += extra_size + DataLayout::compute_size_in_bytes(arg_size+1);

  // Set an initial hint. Don't use set_hint_di() because
  // first_di() may be out of bounds if data_size is 0.
  // In that situation, _hint_di is never used, but at
  // least well-defined.
  _hint_di = first_di();

  post_initialize(&stream);

  set_object_is_parsable(object_size);
}
Example #11
0
void MethodData::initialize() {
  No_Safepoint_Verifier no_safepoint;  // init function atomic wrt GC
  ResourceMark rm;

  init();
  set_creation_mileage(mileage_of(method()));

  // Go through the bytecodes and allocate and initialize the
  // corresponding data cells.
  int data_size = 0;
  int empty_bc_count = 0;  // number of bytecodes lacking data
  _data[0] = 0;  // apparently not set below.
  BytecodeStream stream(method());
  Bytecodes::Code c;
  while ((c = stream.next()) >= 0) {
    int size_in_bytes = initialize_data(&stream, data_size);
    data_size += size_in_bytes;

    if (is_empty_data(size_in_bytes, c)) empty_bc_count++;
  }
  _data_size = data_size;
  int object_size = in_bytes(data_offset()) + data_size;

  // Add some extra DataLayout cells (at least one) to track stray traps.
  int extra_data_count = compute_extra_data_count(data_size, empty_bc_count);
  int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0);
  object_size += extra_size;

  Copy::zero_to_bytes((HeapWord*) extra_data_base(), extra_size);

#ifndef GRAALVM
  // Add a cell to record information about modified arguments.
  // Set up _args_modified array after traps cells so that
  // the code for traps cells works.
  DataLayout *dp = data_layout_at(data_size + extra_size);

  int arg_size = method()->size_of_parameters();
  dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1);

  object_size += DataLayout::compute_size_in_bytes(arg_size+1);
#endif

  // Set an initial hint. Don't use set_hint_di() because
  // first_di() may be out of bounds if data_size is 0.
  // In that situation, _hint_di is never used, but at
  // least well-defined.
  _hint_di = first_di();

  post_initialize(&stream);

  set_size(object_size);
}
Example #12
0
// Initialize an individual data segment.  Returns the size of
// the segment in bytes.
int methodDataOopDesc::initialize_data(BytecodeStream* stream,
                                       int data_index) {
  int cell_count = -1;
  int tag = DataLayout::no_tag;
  DataLayout* data_layout = data_layout_at(data_index);
  Bytecodes::Code c = stream->code();
  switch (c) {
  case Bytecodes::_checkcast:
  case Bytecodes::_instanceof:
  case Bytecodes::_aastore:
    if (TypeProfileCasts) {
      cell_count = ReceiverTypeData::static_cell_count();
      tag = DataLayout::receiver_type_data_tag;
    } else {
      cell_count = BitData::static_cell_count();
      tag = DataLayout::bit_data_tag;
    }
    break;
  case Bytecodes::_invokespecial:
  case Bytecodes::_invokestatic:
    cell_count = CounterData::static_cell_count();
    tag = DataLayout::counter_data_tag;
    break;
  case Bytecodes::_goto:
  case Bytecodes::_goto_w:
  case Bytecodes::_jsr:
  case Bytecodes::_jsr_w:
    cell_count = JumpData::static_cell_count();
    tag = DataLayout::jump_data_tag;
    break;
  case Bytecodes::_invokevirtual:
  case Bytecodes::_invokeinterface:
    cell_count = VirtualCallData::static_cell_count();
    tag = DataLayout::virtual_call_data_tag;
    break;
  case Bytecodes::_invokedynamic:
    // %%% should make a type profile for any invokedynamic that takes a ref argument
    cell_count = CounterData::static_cell_count();
    tag = DataLayout::counter_data_tag;
    break;
  case Bytecodes::_ret:
    cell_count = RetData::static_cell_count();
    tag = DataLayout::ret_data_tag;
    break;
  case Bytecodes::_ifeq:
  case Bytecodes::_ifne:
  case Bytecodes::_iflt:
  case Bytecodes::_ifge:
  case Bytecodes::_ifgt:
  case Bytecodes::_ifle:
  case Bytecodes::_if_icmpeq:
  case Bytecodes::_if_icmpne:
  case Bytecodes::_if_icmplt:
  case Bytecodes::_if_icmpge:
  case Bytecodes::_if_icmpgt:
  case Bytecodes::_if_icmple:
  case Bytecodes::_if_acmpeq:
  case Bytecodes::_if_acmpne:
  case Bytecodes::_ifnull:
  case Bytecodes::_ifnonnull:
    cell_count = BranchData::static_cell_count();
    tag = DataLayout::branch_data_tag;
    break;
  case Bytecodes::_lookupswitch:
  case Bytecodes::_tableswitch:
    cell_count = MultiBranchData::compute_cell_count(stream);
    tag = DataLayout::multi_branch_data_tag;
    break;
  }
  assert(tag == DataLayout::multi_branch_data_tag ||
         cell_count == bytecode_cell_count(c), "cell counts must agree");
  if (cell_count >= 0) {
    assert(tag != DataLayout::no_tag, "bad tag");
    assert(bytecode_has_profile(c), "agree w/ BHP");
    data_layout->initialize(tag, stream->bci(), cell_count);
    return DataLayout::compute_size_in_bytes(cell_count);
  } else {
    assert(!bytecode_has_profile(c), "agree w/ !BHP");
    return 0;
  }
}