Esempio n. 1
0
bool
HeapSnapshot::saveStackFrame(const protobuf::StackFrame& frame,
                             StackFrameId& outFrameId)
{
  // NB: de-duplicated string properties must be read in the same order here as
  // they are written in `CoreDumpWriter::getProtobufStackFrame` or else indices
  // in references to already serialized strings will be off.

  if (frame.has_ref()) {
    // We should only get a reference to the previous frame if we have already
    // seen the previous frame.
    if (!frames.has(frame.ref()))
      return false;

    outFrameId = frame.ref();
    return true;
  }

  // Incomplete message.
  if (!frame.has_data())
    return false;

  auto data = frame.data();

  if (!data.has_id())
    return false;
  StackFrameId id = data.id();

  // This should be the first and only time we see this frame.
  if (frames.has(id))
    return false;

  if (!data.has_line())
    return false;
  uint32_t line = data.line();

  if (!data.has_column())
    return false;
  uint32_t column = data.column();

  if (!data.has_issystem())
    return false;
  bool isSystem = data.issystem();

  if (!data.has_isselfhosted())
    return false;
  bool isSelfHosted = data.isselfhosted();

  Maybe<StringOrRef> sourceOrRef = GET_STRING_OR_REF(data, source);
  auto source = getOrInternString<char16_t>(internedTwoByteStrings, sourceOrRef);
  if (!source)
    return false;

  const char16_t* functionDisplayName = nullptr;
  if (data.FunctionDisplayNameOrRef_case() !=
      protobuf::StackFrame_Data::FUNCTIONDISPLAYNAMEORREF_NOT_SET)
  {
    Maybe<StringOrRef> nameOrRef = GET_STRING_OR_REF(data, functiondisplayname);
    functionDisplayName = getOrInternString<char16_t>(internedTwoByteStrings, nameOrRef);
    if (!functionDisplayName)
      return false;
  }

  Maybe<StackFrameId> parent;
  if (data.has_parent()) {
    StackFrameId parentId = 0;
    if (!saveStackFrame(data.parent(), parentId))
      return false;
    parent = Some(parentId);
  }

  if (!frames.putNew(id, DeserializedStackFrame(id, parent, line, column,
                                                source, functionDisplayName,
                                                isSystem, isSelfHosted, *this)))
  {
    return false;
  }

  outFrameId = id;
  return true;
}
Esempio n. 2
0
bool
HeapSnapshot::saveStackFrame(const protobuf::StackFrame& frame,
                             StackFrameId& outFrameId)
{
  if (frame.has_ref()) {
    // We should only get a reference to the previous frame if we have already
    // seen the previous frame.
    if (!frames.has(frame.ref()))
      return false;

    outFrameId = frame.ref();
    return true;
  }

  // Incomplete message.
  if (!frame.has_data())
    return false;

  auto data = frame.data();

  if (!data.has_id())
    return false;
  StackFrameId id = data.id();

  // This should be the first and only time we see this frame.
  if (frames.has(id))
    return false;

  Maybe<StackFrameId> parent;
  if (data.has_parent()) {
    StackFrameId parentId = 0;
    if (!saveStackFrame(data.parent(), parentId))
      return false;
    parent = Some(parentId);
  }

  if (!data.has_line())
    return false;
  uint32_t line = data.line();

  if (!data.has_column())
    return false;
  uint32_t column = data.column();

  auto duplicatedSource = reinterpret_cast<const char16_t*>(
    data.source().data());
  size_t sourceLength = data.source().length() / sizeof(char16_t);
  const char16_t* source = borrowUniqueString(duplicatedSource, sourceLength);
  if (!source)
    return false;

  const char16_t* functionDisplayName = nullptr;
  if (data.has_functiondisplayname()) {
    auto duplicatedName = reinterpret_cast<const char16_t*>(
      data.functiondisplayname().data());
    size_t nameLength = data.functiondisplayname().length() / sizeof(char16_t);
    const char16_t* functionDisplayName = borrowUniqueString(duplicatedName,
                                                             nameLength);
    if (!functionDisplayName)
      return false;
  }

  if (!data.has_issystem())
    return false;
  bool isSystem = data.issystem();

  if (!data.has_isselfhosted())
    return false;
  bool isSelfHosted = data.isselfhosted();

  if (!frames.putNew(id, DeserializedStackFrame(id, parent, line, column,
                                                source, functionDisplayName,
                                                isSystem, isSelfHosted, *this)))
  {
    return false;
  }

  outFrameId = id;
  return true;
}