C++ ACE_Data_Block::flags方法代码示例

int
TAO_DII_Asynch_Reply_Dispatcher::dispatch_reply (
    TAO_Pluggable_Reply_Params &params)
{
  this->reply_status_ = params.reply_status ();
  this->locate_reply_status_ = params.locate_reply_status ();

  // Transfer the <params.input_cdr_>'s content to this->reply_cdr_
  ACE_Data_Block *db =
    this->reply_cdr_.clone_from (*params.input_cdr_);

  // See whether we need to delete the data block by checking the
  // flags. We cannot be happy that we initally allocated the
  // datablocks of the stack. If this method is called twice, as is in
  // some cases where the same invocation object is used to make two
  // invocations like forwarding, the release becomes essential.
  if (ACE_BIT_DISABLED (db->flags (),
                        ACE_Message_Block::DONT_DELETE))
    db->release ();

  // Steal the buffer, that way we don't do any unnecesary copies of
  // this data.
  CORBA::ULong max = params.svc_ctx_.maximum ();
  CORBA::ULong len = params.svc_ctx_.length ();
  IOP::ServiceContext* context_list = params.svc_ctx_.get_buffer (1);
  this->reply_service_info_.replace (max, len, context_list, 1);

  if (TAO_debug_level >= 4)
    {
      TAOLIB_DEBUG ((LM_DEBUG,
                  ACE_TEXT ("(%P | %t):")
                  ACE_TEXT ("TAO_DII_Asynch_Reply_Dispatcher::dispatch_reply: status = %d\n"),
                  this->reply_status_));
    }

  try
    {
      // Call the handler with the reply data.
      CORBA::Request::_tao_reply_stub (this->reply_cdr_,
                                       this->callback_,
                                       this->reply_status_);
    }
  catch (const CORBA::Exception& ex)
    {
      if (TAO_debug_level >= 4)
        {
          ex._tao_print_exception ("Exception during reply handler");
        }
    }
  // This was dynamically allocated. Now the job is done.
  this->intrusive_remove_ref (this);

  return 1;
}

int
TAO_Synch_Reply_Dispatcher::dispatch_reply (
    TAO_Pluggable_Reply_Params &params)
{
  if (params.input_cdr_ == 0)
    return -1;

  this->reply_status_ = params.reply_status ();
  this->locate_reply_status_ = params.locate_reply_status ();

  // Steal the buffer, that way we don't do any unnecesary copies of
  // this data.
  CORBA::ULong const max = params.svc_ctx_.maximum ();
  CORBA::ULong const len = params.svc_ctx_.length ();
  IOP::ServiceContext* context_list = params.svc_ctx_.get_buffer (true);
  this->reply_service_info_.replace (max, len, context_list, true);

  if (this->reply_service_info_.length() > 0)
    {
      orb_core_->service_context_registry ().
        process_service_contexts (this->reply_service_info_, *(params.transport_), 0);
    }

  // Must reset the message state, it is possible that the same reply
  // dispatcher is used because the request must be re-sent.
  // this->message_state_.reset (0);

  // Transfer the <params.input_cdr_>'s content to this->reply_cdr_
  if (ACE_BIT_DISABLED ((*params.input_cdr_).start()->data_block()->flags(),
                        ACE_Message_Block::DONT_DELETE))
  {
    // Data block is on the heap, so just duplicate it.
    this->reply_cdr_ = *params.input_cdr_;
    this->reply_cdr_.clr_mb_flags (ACE_Message_Block::DONT_DELETE);
  }
  else
  {
    ACE_Data_Block *db = this->reply_cdr_.clone_from (*params.input_cdr_);

    if (db == 0)
      {
        if (TAO_debug_level > 2)
          {
            TAOLIB_ERROR ((LM_ERROR,
                        "TAO (%P|%t) - Synch_Reply_Dispatcher::dispatch_reply "
                        "clone_from failed\n"));
          }
        return -1;
      }

    // See whether we need to delete the data block by checking the
    // flags. We cannot be happy that we initally allocated the
    // datablocks of the stack. If this method is called twice, as is in
    // some cases where the same invocation object is used to make two
    // invocations like forwarding, the release becomes essential.
    if (ACE_BIT_DISABLED (db->flags (),
                          ACE_Message_Block::DONT_DELETE))
      {
        db->release ();
      }
  }

  this->state_changed (TAO_LF_Event::LFS_SUCCESS,
                       this->orb_core_->leader_follower ());

  return 1;
}

// Dispatch the reply.
int
TAO_Asynch_Reply_Dispatcher::dispatch_reply (TAO_Pluggable_Reply_Params &params)
{
  if (this->timeout_handler_)
    {
      // If we had registered timeout handlers just cancel them and
      // loose ownership of the handlers
      this->timeout_handler_->cancel ();
      this->timeout_handler_->remove_reference ();
      this->timeout_handler_ = 0;
      // AMI Timeout Handling End
    }

  // With Asynch requests the invocation handler can't call idle_after_reply ()
  // since it does not handle the reply.
  // So we have to do that here in case f.i. the Exclusive TMS left the transport
  // busy after the send
  if (this->transport_ != 0)
    this->transport_->tms ()->idle_after_reply ();

  if (!params.input_cdr_)
    return -1;

  if (!this->try_dispatch_reply ())
    return 0;

  this->reply_status_ = params.reply_status ();
  this->locate_reply_status_ = params.locate_reply_status ();

  // Transfer the <params.input_cdr_>'s content to this->reply_cdr_
  ACE_Data_Block *db = this->reply_cdr_.clone_from (*params.input_cdr_);

  if (db == 0)
    {
      if (TAO_debug_level > 2)
        {
          TAOLIB_ERROR ((
            LM_ERROR,
            ACE_TEXT ("TAO_Messaging (%P|%t) - Asynch_Reply_Dispatcher::dispatch_reply ")
            ACE_TEXT ("clone_from failed\n")));
        }
      return -1;
    }

  // See whether we need to delete the data block by checking the
  // flags. We cannot be happy that we initially allocated the
  // datablocks of the stack. If this method is called twice, as is in
  // some cases where the same invocation object is used to make two
  // invocations like forwarding, the release becomes essential.
  if (ACE_BIT_DISABLED (db->flags (), ACE_Message_Block::DONT_DELETE))
    {
      db->release ();
    }

  if (!CORBA::is_nil (this->reply_handler_.in ()))
    {
      // Steal the buffer, that way we don't do any unnecesary copies of
      // this data.
      CORBA::ULong const max = params.svc_ctx_.maximum ();
      CORBA::ULong const len = params.svc_ctx_.length ();
      IOP::ServiceContext *context_list = params.svc_ctx_.get_buffer (1);
      this->reply_service_info_.replace (max, len, context_list, 1);

      if (TAO_debug_level >= 4)
        {
          TAOLIB_DEBUG ((LM_DEBUG,
                      ACE_TEXT ("TAO_Messaging (%P|%t) - Asynch_Reply_Dispatcher")
                      ACE_TEXT ("::dispatch_reply status = %d\n"),
                                this->reply_status_));
        }

      CORBA::ULong reply_error = TAO_AMI_REPLY_NOT_OK;
      switch (this->reply_status_)
        {
        case GIOP::NO_EXCEPTION:
          reply_error = TAO_AMI_REPLY_OK;
          break;
        case GIOP::USER_EXCEPTION:
          reply_error = TAO_AMI_REPLY_USER_EXCEPTION;
          break;
        case GIOP::SYSTEM_EXCEPTION:
          reply_error = TAO_AMI_REPLY_SYSTEM_EXCEPTION;
          break;
        case GIOP::LOCATION_FORWARD:
          reply_error = TAO_AMI_REPLY_LOCATION_FORWARD;
          break;
        case GIOP::LOCATION_FORWARD_PERM:
          reply_error = TAO_AMI_REPLY_LOCATION_FORWARD_PERM;
          break;

        default:
          // @@ Michael: Not even the spec mentions this case.
          //             We have to think about this case.
          // Handle the forwarding and return so the stub restarts the
          // request!
          reply_error = TAO_AMI_REPLY_NOT_OK;
          break;
        }

//.........这里部分代码省略.........