objects-debug.cc.svn-base

Google浏览器V8内核代码

void JSFunction::JSFunctionVerify() {
  CHECK(IsJSFunction());
  VerifyObjectField(kPrototypeOrInitialMapOffset);
}


void SharedFunctionInfo::SharedFunctionInfoPrint() {
  HeapObject::PrintHeader("SharedFunctionInfo");
  PrintF(" - name: ");
  name()->ShortPrint();
  PrintF("\n - expected_nof_properties: %d", expected_nof_properties());
  PrintF("\n - instance class name =");
  instance_class_name()->Print();
  PrintF("\n - code =");
  code()->ShortPrint();
  PrintF("\n - source code =");
  GetSourceCode()->ShortPrint();
  PrintF("\n - lazy load: %s",
         lazy_load_data() == Heap::undefined_value() ? "no" : "yes");
  // Script files are often large, hard to read.
  // PrintF("\n - script =");
  // script()->Print();
  PrintF("\n - function token position = %d", function_token_position());
  PrintF("\n - start position = %d", start_position());
  PrintF("\n - end position = %d", end_position());
  PrintF("\n - is expression = %d", is_expression());
  PrintF("\n - debug info = ");
  debug_info()->Print();
  PrintF("\n - length = %d", length());
  PrintF("\n");
}

void SharedFunctionInfo::SharedFunctionInfoVerify() {
  CHECK(IsSharedFunctionInfo());
  VerifyObjectField(kNameOffset);
  VerifyObjectField(kCodeOffset);
  VerifyObjectField(kInstanceClassNameOffset);
  VerifyObjectField(kExternalReferenceDataOffset);
  VerifyObjectField(kLazyLoadDataOffset);
  VerifyObjectField(kScriptOffset);
  VerifyObjectField(kDebugInfoOffset);
}


void JSGlobalObject::JSGlobalObjectPrint() {
  PrintF("global ");
  JSObjectPrint();
}


void JSGlobalObject::JSGlobalObjectVerify() {
  CHECK(IsJSGlobalObject());
  JSObjectVerify();
  for (int i = GlobalObject::kBuiltinsOffset;
       i < JSGlobalObject::kSize;
       i += kPointerSize) {
    VerifyObjectField(i);
  }
}


void JSBuiltinsObject::JSBuiltinsObjectPrint() {
  PrintF("builtins ");
  JSObjectPrint();
}


void JSBuiltinsObject::JSBuiltinsObjectVerify() {
  CHECK(IsJSBuiltinsObject());
  JSObjectVerify();
  for (int i = GlobalObject::kBuiltinsOffset;
       i < JSBuiltinsObject::kSize;
       i += kPointerSize) {
    VerifyObjectField(i);
  }
}


void Oddball::OddballVerify() {
  CHECK(IsOddball());
  VerifyHeapPointer(to_string());
  Object* number = to_number();
  if (number->IsHeapObject()) {
    ASSERT(number == Heap::nan_value());
  } else {
    ASSERT(number->IsSmi());
    int value = Smi::cast(number)->value();
    ASSERT(value == 0 || value == 1 || value == -1);
  }
}


void Code::CodePrint() {
  HeapObject::PrintHeader("Code");
#ifdef ENABLE_DISASSEMBLER
  Disassemble();
#endif
}


void Code::CodeVerify() {
  CHECK(ic_flag() == IC_TARGET_IS_ADDRESS);
  Address last_gc_pc = NULL;
  for (RelocIterator it(this); !it.done(); it.next()) {
    it.rinfo()->Verify();
    // Ensure that GC will not iterate twice over the same pointer.
    if (RelocInfo::IsGCRelocMode(it.rinfo()->rmode())) {
      CHECK(it.rinfo()->pc() != last_gc_pc);
      last_gc_pc = it.rinfo()->pc();
    }
  }
}


void JSArray::JSArrayVerify() {
  JSObjectVerify();
  ASSERT(length()->IsNumber() || length()->IsUndefined());
  ASSERT(elements()->IsUndefined() || elements()->IsFixedArray());
}


void JSRegExp::JSRegExpVerify() {
  JSObjectVerify();
  ASSERT(type()->IsSmi() || type()->IsUndefined());
  ASSERT(data()->IsUndefined() || data()->IsFixedArray());
}


void Proxy::ProxyPrint() {
  PrintF("proxy to %p", proxy());
}


void Proxy::ProxyVerify() {
  ASSERT(IsProxy());
}


void Dictionary::Print() {
  int capacity = Capacity();
  for (int i = 0; i < capacity; i++) {
    Object* k = KeyAt(i);
    if (IsKey(k)) {
      PrintF(" ");
      if (k->IsString()) {
        String::cast(k)->StringPrint();
      } else {
        k->ShortPrint();
      }
      PrintF(": ");
      ValueAt(i)->ShortPrint();
      PrintF("\n");
    }
  }
}


void AccessorInfo::AccessorInfoVerify() {
  CHECK(IsAccessorInfo());
  VerifyPointer(getter());
  VerifyPointer(setter());
  VerifyPointer(name());
  VerifyPointer(data());
  VerifyPointer(flag());
}

void AccessorInfo::AccessorInfoPrint() {
  PrintF("AccessorInfo");
  PrintF("\n - getter: ");
  getter()->ShortPrint();
  PrintF("\n - setter: ");
  setter()->ShortPrint();
  PrintF("\n - name: ");
  name()->ShortPrint();
  PrintF("\n - data: ");
  data()->ShortPrint();
  PrintF("\n - flag: ");
  flag()->ShortPrint();
}

void AccessCheckInfo::AccessCheckInfoVerify() {
  CHECK(IsAccessCheckInfo());
  VerifyPointer(named_callback());
  VerifyPointer(indexed_callback());
  VerifyPointer(data());
}

void AccessCheckInfo::AccessCheckInfoPrint() {
  PrintF("AccessCheckInfo");
  PrintF("\n - named_callback: ");
  named_callback()->ShortPrint();
  PrintF("\n - indexed_callback: ");
  indexed_callback()->ShortPrint();
  PrintF("\n - data: ");
  data()->ShortPrint();
}

void InterceptorInfo::InterceptorInfoVerify() {
  CHECK(IsInterceptorInfo());
  VerifyPointer(getter());
  VerifyPointer(setter());
  VerifyPointer(query());
  VerifyPointer(deleter());
  VerifyPointer(enumerator());
  VerifyPointer(data());
}

void InterceptorInfo::InterceptorInfoPrint() {
  PrintF("InterceptorInfo");
  PrintF("\n - getter: ");
  getter()->ShortPrint();
  PrintF("\n - setter: ");
  setter()->ShortPrint();
  PrintF("\n - query: ");
  query()->ShortPrint();
  PrintF("\n - deleter: ");
  deleter()->ShortPrint();
  PrintF("\n - enumerator: ");
  enumerator()->ShortPrint();
  PrintF("\n - data: ");
  data()->ShortPrint();
}

void CallHandlerInfo::CallHandlerInfoVerify() {
  CHECK(IsCallHandlerInfo());
  VerifyPointer(callback());
  VerifyPointer(data());
}

void CallHandlerInfo::CallHandlerInfoPrint() {
  PrintF("CallHandlerInfo");
  PrintF("\n - callback: ");
  callback()->ShortPrint();
  PrintF("\n - data: ");
  data()->ShortPrint();
}

void TemplateInfo::TemplateInfoVerify() {
  VerifyPointer(tag());
  VerifyPointer(property_list());
}

void FunctionTemplateInfo::FunctionTemplateInfoVerify() {
  CHECK(IsFunctionTemplateInfo());
  TemplateInfoVerify();
  VerifyPointer(serial_number());
  VerifyPointer(call_code());
  VerifyPointer(property_accessors());
  VerifyPointer(prototype_template());
  VerifyPointer(parent_template());
  VerifyPointer(named_property_handler());
  VerifyPointer(indexed_property_handler());
  VerifyPointer(instance_template());
  VerifyPointer(signature());
  VerifyPointer(access_check_info());
}

void FunctionTemplateInfo::FunctionTemplateInfoPrint() {
  PrintF("FunctionTemplateInfo");
  PrintF("\n - tag: ");
  tag()->ShortPrint();
  PrintF("\n - property_list: ");
  property_list()->ShortPrint();
  PrintF("\n - serial_number: ");
  serial_number()->ShortPrint();
  PrintF("\n - call_code: ");
  call_code()->ShortPrint();
  PrintF("\n - property_accessors: ");
  property_accessors()->ShortPrint();
  PrintF("\n - prototype_template: ");
  prototype_template()->ShortPrint();
  PrintF("\n - parent_template: ");
  parent_template()->ShortPrint();
  PrintF("\n - named_property_handler: ");
  named_property_handler()->ShortPrint();
  PrintF("\n - indexed_property_handler: ");
  indexed_property_handler()->ShortPrint();
  PrintF("\n - instance_template: ");
  instance_template()->ShortPrint();
  PrintF("\n - signature: ");
  signature()->ShortPrint();
  PrintF("\n - access_check_info: ");
  access_check_info()->ShortPrint();
  PrintF("\n - hidden_prototype: %s", hidden_prototype() ? "true" : "false");
  PrintF("\n - undetectable: %s", undetectable() ? "true" : "false");
  PrintF("\n - need_access_check: %s", needs_access_check() ? "true" : "false");
}

void ObjectTemplateInfo::ObjectTemplateInfoVerify() {
  CHECK(IsObjectTemplateInfo());
  TemplateInfoVerify();
  VerifyPointer(constructor());
  VerifyPointer(internal_field_count());
}

void ObjectTemplateInfo::ObjectTemplateInfoPrint() {
  PrintF("ObjectTemplateInfo");
  PrintF("\n - constructor: ");
  constructor()->ShortPrint();
  PrintF("\n - internal_field_count: ");
  internal_field_count()->ShortPrint();
}

void SignatureInfo::SignatureInfoVerify() {
  CHECK(IsSignatureInfo());
  VerifyPointer(receiver());
  VerifyPointer(args());
}

void SignatureInfo::SignatureInfoPrint() {
  PrintF("SignatureInfo");
  PrintF("\n - receiver: ");
  receiver()->ShortPrint();
  PrintF("\n - args: ");
  args()->ShortPrint();
}

void TypeSwitchInfo::TypeSwitchInfoVerify() {
  CHECK(IsTypeSwitchInfo());
  VerifyPointer(types());
}

void TypeSwitchInfo::TypeSwitchInfoPrint() {
  PrintF("TypeSwitchInfo");
  PrintF("\n - types: ");
  types()->ShortPrint();
}


void Script::ScriptVerify() {
  CHECK(IsScript());
  VerifyPointer(source());
  VerifyPointer(name());
  line_offset()->SmiVerify();
  column_offset()->SmiVerify();
  type()->SmiVerify();
}


void Script::ScriptPrint() {
  HeapObject::PrintHeader("Script");
  PrintF("\n - source: ");
  source()->ShortPrint();
  PrintF("\n - name: ");
  name()->ShortPrint();
  PrintF("\n - line_offset: ");
  line_offset()->ShortPrint();
  PrintF("\n - column_offset: ");
  column_offset()->ShortPrint();
  PrintF("\n - type: ");
  type()->ShortPrint();
  PrintF("\n");
}


void DebugInfo::DebugInfoVerify() {
  CHECK(IsDebugInfo());
  VerifyPointer(shared());
  VerifyPointer(original_code());
  VerifyPointer(code());
  VerifyPointer(break_points());
}


void DebugInfo::DebugInfoPrint() {
  PrintF("DebugInfo");
  PrintF("\n - shared");
  shared()->ShortPrint();
  PrintF("\n - original_code");
  original_code()->ShortPrint();
  PrintF("\n - code");
  code()->ShortPrint();
  PrintF("\n - break_points");
  break_points()->ShortPrint();
}


void BreakPointInfo::BreakPointInfoVerify() {
  CHECK(IsBreakPointInfo());
  code_position()->SmiVerify();
  source_position()->SmiVerify();
  statement_position()->SmiVerify();
  VerifyPointer(break_point_objects());
}


void BreakPointInfo::BreakPointInfoPrint() {
  PrintF("BreakPointInfo");
  PrintF("\n - code_position %d", code_position());
  PrintF("\n - source_position %d", source_position());
  PrintF("\n - statement_position %d", statement_position());
  PrintF("\n - break_point_objects ");
  break_point_objects()->ShortPrint();
}


void JSObject::IncrementSpillStatistics(SpillInformation* info) {
  info->number_of_objects_++;
  // Named properties
  if (HasFastProperties()) {
    info->number_of_objects_with_fast_properties_++;
    info->number_of_fast_used_fields_   += map()->NextFreePropertyIndex();
    info->number_of_fast_unused_fields_ += map()->unused_property_fields();
  } else {
    Dictionary* dict = property_dictionary();
    info->number_of_slow_used_properties_ += dict->NumberOfElements();
    info->number_of_slow_unused_properties_ +=
        dict->Capacity() - dict->NumberOfElements();
  }
  // Indexed properties
  if (HasFastElements()) {
    info->number_of_objects_with_fast_elements_++;
    int holes = 0;
    FixedArray* e = FixedArray::cast(elements());
    int len = e->length();
    for (int i = 0; i < len; i++) {
      if (e->get(i) == Heap::the_hole_value()) holes++;
    }
    info->number_of_fast_used_elements_   += len - holes;
    info->number_of_fast_unused_elements_ += holes;
  } else {
    Dictionary* dict = element_dictionary();
    info->number_of_slow_used_elements_ += dict->NumberOfElements();
    info->number_of_slow_unused_elements_ +=
        dict->Capacity() - dict->NumberOfElements();
  }
}


void JSObject::SpillInformation::Clear() {
  number_of_objects_ = 0;
  number_of_objects_with_fast_properties_ = 0;
  number_of_objects_with_fast_elements_ = 0;
  number_of_fast_used_fields_ = 0;
  number_of_fast_unused_fields_ = 0;
  number_of_slow_used_properties_ = 0;
  number_of_slow_unused_properties_ = 0;
  number_of_fast_used_elements_ = 0;
  number_of_fast_unused_elements_ = 0;
  number_of_slow_used_elements_ = 0;
  number_of_slow_unused_elements_ = 0;
}

void JSObject::SpillInformation::Print() {
  PrintF("\n  JSObject Spill Statistics (#%d):\n", number_of_objects_);

  PrintF("    - fast properties (#%d): %d (used) %d (unused)\n",
         number_of_objects_with_fast_properties_,
         number_of_fast_used_fields_, number_of_fast_unused_fields_);

  PrintF("    - slow properties (#%d): %d (used) %d (unused)\n",
         number_of_objects_ - number_of_objects_with_fast_properties_,
         number_of_slow_used_properties_, number_of_slow_unused_properties_);

  PrintF("    - fast elements (#%d): %d (used) %d (unused)\n",
         number_of_objects_with_fast_elements_,
         number_of_fast_used_elements_, number_of_fast_unused_elements_);

  PrintF("    - slow elements (#%d): %d (used) %d (unused)\n",
         number_of_objects_ - number_of_objects_with_fast_elements_,
         number_of_slow_used_elements_, number_of_slow_unused_elements_);

  PrintF("\n");
}


void DescriptorArray::PrintDescriptors() {
  PrintF("Descriptor array  %d\n", number_of_descriptors());
  int number = 0;
  for (DescriptorReader r(this); !r.eos(); r.advance()) {
    Descriptor desc;
    r.Get(&desc);
    PrintF(" %d: ", number++);
    desc.Print();
  }
  PrintF("\n");
}


bool DescriptorArray::IsSortedNoDuplicates() {
  String* current_key = NULL;
  uint32_t current = 0;
  for (DescriptorReader r(this); !r.eos(); r.advance()) {
    String* key = r.GetKey();
    if (key == current_key) {
      PrintDescriptors();
      return false;
    }
    current_key = key;
    uint32_t hash = r.GetKey()->Hash();
    if (hash < current) {
      PrintDescriptors();
      return false;
    }
    current = hash;
  }
  return true;
}


#endif  // DEBUG

} }  // namespace v8::internal