C++ (Cpp) ACE_FILE_IO::remove Examples

Example #1

File: RecordingDevice_Text.cpp Project: DOCGroup/ACE_TAO

// Listing 04 code/ch18
int TextListener::play_message (ACE_FILE_Addr &addr)
{
  MessageType *type = Util::identify_message (addr);
  if (type->is_text ())
    {
      Command *c = new Command ();
      c->command_ = Command::CMD_PLAY_MESSAGE;
      c->extra_data_ = &addr;
      c = this->command_stream_->execute (c);
      return c->numeric_result_;
    }

  ACE_FILE_Addr temp (ACE_TEXT ("/tmp/outgoing_message.text"));
  ACE_FILE_IO *file;
  if (type->is_audio ())
    file = Util::audio_to_text (addr, temp);
  else if (type->is_video ())
    file = Util::video_to_text (addr, temp);
  else
    ACE_ERROR_RETURN
      ((LM_ERROR, ACE_TEXT ("Invalid message type %d\n"),
        type->get_codec ()), -1);
  int rval = this->play_message (temp);
  file->remove ();
  return rval;
}

Example #2

File: Proactor_File_Test.cpp Project: esohns/ATCD

int FileIOHandler::Connect()
{
  int result = 0;

  // create an empty temporary file for the test
  if(connector_.connect(peer_,
                        ACE_sap_any_cast (ACE_FILE_Addr &)) != 0)
  {
    ACE_ERROR((LM_ERROR, ACE_TEXT("%p\n"),
            ACE_TEXT("FileIOHandler connect failed to create file")));
    result = -1;
  }

  // close opened file but leave it where it is
  if (peer_.close () != 0)
  {
    ACE_ERROR((LM_ERROR, ACE_TEXT("%p\n"),
            ACE_TEXT("FileIOHandler connect failed to close file")));
    peer_.remove ();
    result = -1;
  }

  // get file address
  ACE_FILE_Addr tmp_addr;
  peer_.get_local_addr (tmp_addr);

  // reopen new file for asynch IO
  if(connector_.connect(peer_,
                        tmp_addr,
                        0, //timeout
                        ACE_Addr::sap_any,
                        0, //reuse
                        O_RDWR |FILE_FLAG_OVERLAPPED) != 0)
  {
    ACE_ERROR((LM_ERROR, ACE_TEXT("%p\n"),
            ACE_TEXT("FileIOHandler connect failed to open file")));
    peer_.remove ();
    result = -1;
  }
  else // device connected successfully
  {
    // keep track of our writes for offset calculations (can't use O_APPEND since
    // this is not supported for the Win32_Asynch implementation) and data verifications
    this->block_count_ = 0; // start counting

    // Set our I/O handle to that of the peer_ object handling our connection
    handle(peer_.get_handle());

    if (writer_.open(*this) != 0 || reader_.open(*this) != 0)
    {
      ACE_ERROR(
          (LM_ERROR, ACE_TEXT("%p\n"), ACE_TEXT("FileIOHandler reader or writer open failed")));
      result = -1;
    }
    else // reader and writer opened successfully
    {
      // Allocate a new message block and initiate a read operation on it
      // to prime the asynchronous read pipeline
      // The message block is sized for the largest message we expect
      ACE_Message_Block *mb;
      ACE_NEW_NORETURN(mb, ACE_Message_Block(FILE_FRAME_SIZE));
      if (reader_.read(*mb, mb->space()) != 0)
      {
        int errnr = ACE_OS::last_error ();
        ACE_DEBUG(
            (LM_INFO, ACE_TEXT("%p [%d]\n"), ACE_TEXT("FileIOHandler begin read failed"), errnr));
        mb->release();
#if defined (ACE_WIN32)
        // On older Win32 versions (WinXP, Win2003/2008) asynch IO with disk files is not
        // reliable and may perform sync IO in certain cases like when the read offset denotes
        // current end of file. Instead of scheduling a write operation the read will immediately
        // return with an EOF error.
        // We circumvent that situation here by not reporting an error and scheduling a read operation
        // later when we are sure data has been written at the offset in question (after the write finishes).
        if (errnr != ERROR_HANDLE_EOF)
#endif
        result = -1;
      }
#if defined (ACE_WIN32)
      else
      {
        this->read_pending_ = true;
      }
#endif
      // If read worked, psMsg is now controlled by Proactor framework.
    }
  }
  return result;
}