145 lines
4.7 KiB
C++
145 lines
4.7 KiB
C++
/****************************************************************************
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Copyright (c) 2005, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "messaging/dispatcher.h"
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#include "messaging/port.h"
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namespace Messaging
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{
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__ImplementClass(Messaging::Dispatcher, 'MDIS', Messaging::Port);
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//------------------------------------------------------------------------------
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/**
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*/
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Dispatcher::Dispatcher() :
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idPorts(64, 64)
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{
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// empty
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}
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//------------------------------------------------------------------------------
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/**
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Attach a new message port.
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@param port pointer to a message port object
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*/
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void
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Dispatcher::AttachPort(const GPtr<Port>& port)
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{
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n_assert(port);
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n_assert(!this->HasPort(port));
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// add to port array
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this->portArray.Append(port);
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// get the array of accepted messages from the port, and add each message
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// to our own accepted messages, and create a mapping of message ids to ports
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const Util::Array<const Id*>& idArray = port->GetAcceptedMessages();
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IndexT i;
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for (i = 0; i < idArray.Size(); i++)
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{
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const Id* msgIdPtr = idArray[i];
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this->RegisterMessage(*msgIdPtr);
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if (!this->idPortMap.Contains(msgIdPtr))
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{
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// need to add a new empty entry
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Util::Array<GPtr<Port> > emptyArray;
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this->idPorts.Append(emptyArray);
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this->idPortMap.Add(msgIdPtr, this->idPorts.Size() - 1);
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}
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this->idPorts[this->idPortMap[msgIdPtr]].Append(port);
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}
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}
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//------------------------------------------------------------------------------
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/**
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Remove a message port object.
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@param handler pointer to message port object to be removed
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*/
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void
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Dispatcher::RemovePort(const GPtr<Port>& port)
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{
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n_assert(0 != port);
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n_assert(this->HasPort(port));
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// remove the port from the id/port map
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const Util::Array<const Id*>& idArray = port->GetAcceptedMessages();
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IndexT i;
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for (i = 0; i < idArray.Size(); i++)
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{
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const Id* msgIdPtr = idArray[i];
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if (this->idPortMap.Contains(msgIdPtr))
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{
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Util::Array<GPtr<Port> >& ports = this->idPorts[this->idPortMap[msgIdPtr]];
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IndexT portIndex = ports.FindIndex(port);
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n_assert(InvalidIndex != portIndex);
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ports.EraseIndex(portIndex);
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}
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}
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// NOTE: there's no way to remove the message from our accepted messages,
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// so that's not a bug!
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// finally remove the port from the ports array
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IndexT index = this->portArray.FindIndex(port);
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n_assert(InvalidIndex != index);
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this->portArray.EraseIndex(index);
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}
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//------------------------------------------------------------------------------
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/**
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Return true if a port is already attached.
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*/
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bool
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Dispatcher::HasPort(const GPtr<Port>& port) const
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{
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n_assert(0 != port);
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return (InvalidIndex != this->portArray.FindIndex(port));
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}
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//------------------------------------------------------------------------------
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/**
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Handle a message. The message will only be distributed to ports
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which accept the message.
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*/
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void
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Dispatcher::HandleMessage(const GPtr<Message>& msg)
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{
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const Id* msgIdPtr = &(msg->GetId());
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IndexT mapIndex = this->idPortMap.FindIndex(msgIdPtr);
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if (InvalidIndex != mapIndex)
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{
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const Util::Array<GPtr<Port> >& portArray = this->idPorts[this->idPortMap.ValueAtIndex(mapIndex)];
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IndexT portIndex;
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for (portIndex = 0; portIndex < portArray.Size(); portIndex++)
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{
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portArray[portIndex]->HandleMessage(msg);
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}
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}
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}
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} // namespace Messaging
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