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|
/*****************************************************************
|
| Neptune - Simple Message Queue
|
| Copyright (c) 2002-2008, Axiomatic Systems, LLC.
| All rights reserved.
|
| Redistribution and use in source and binary forms, with or without
| modification, are permitted provided that the following conditions are met:
| * Redistributions of source code must retain the above copyright
| notice, this list of conditions and the following disclaimer.
| * Redistributions in binary form must reproduce the above copyright
| notice, this list of conditions and the following disclaimer in the
| documentation and/or other materials provided with the distribution.
| * Neither the name of Axiomatic Systems nor the
| names of its contributors may be used to endorse or promote products
| derived from this software without specific prior written permission.
|
| THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
| EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
| DISCLAIMED. IN NO EVENT SHALL AXIOMATIC SYSTEMS BE LIABLE FOR ANY
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "NptSimpleMessageQueue.h"
#include "NptDebug.h"
#include "NptLogging.h"
/*----------------------------------------------------------------------
| logging
+---------------------------------------------------------------------*/
NPT_SET_LOCAL_LOGGER("neptune.message-queue")
/*----------------------------------------------------------------------
| NPT_SimpleMessageCapsule
+---------------------------------------------------------------------*/
struct NPT_SimpleMessageCapsule
{
NPT_SimpleMessageCapsule(NPT_Message* message,
NPT_MessageHandler* handler);
~NPT_SimpleMessageCapsule();
NPT_Message* m_Message;
NPT_MessageHandler* m_Handler;
NPT_MessageHandlerProxy* m_Proxy;
};
/*----------------------------------------------------------------------
| NPT_SimpleMessageCapsule::NPT_SimpleMessageCapsule
+---------------------------------------------------------------------*/
NPT_SimpleMessageCapsule::NPT_SimpleMessageCapsule(NPT_Message* message,
NPT_MessageHandler* handler) :
m_Message(message),
m_Handler(handler),
m_Proxy(NPT_DYNAMIC_CAST(NPT_MessageHandlerProxy, handler))
{
if (m_Proxy) m_Proxy->AddReference();
}
/*----------------------------------------------------------------------
| NPT_SimpleMessageCapsule::~NPT_SimpleMessageCapsule
+---------------------------------------------------------------------*/
NPT_SimpleMessageCapsule::~NPT_SimpleMessageCapsule()
{
if (m_Proxy) m_Proxy->Release();
}
/*----------------------------------------------------------------------
| NPT_SimpleMessageQueue::NPT_SimpleMessageQueue
+---------------------------------------------------------------------*/
NPT_SimpleMessageQueue::NPT_SimpleMessageQueue()
{
}
/*----------------------------------------------------------------------
| NPT_SimpleMessageQueue::~NPT_SimpleMessageQueue
+---------------------------------------------------------------------*/
NPT_SimpleMessageQueue::~NPT_SimpleMessageQueue()
{
// empty the queue
// TBD
}
/*----------------------------------------------------------------------
| NPT_SimpleMessageQueue::QueueMessage
+---------------------------------------------------------------------*/
NPT_Result
NPT_SimpleMessageQueue::QueueMessage(NPT_Message* message,
NPT_MessageHandler* handler)
{
// push the message on the queue, with the handler reference
NPT_SimpleMessageCapsule* capsule = new NPT_SimpleMessageCapsule(message, handler);
NPT_Result result = m_Queue.Push(capsule);
if (NPT_FAILED(result)) delete capsule;
return result;
}
/*----------------------------------------------------------------------
| NPT_SimpleMessageQueue::PumpMessage
+---------------------------------------------------------------------*/
NPT_Result
NPT_SimpleMessageQueue::PumpMessage(NPT_Timeout timeout /* = NPT_TIMEOUT_INFINITE */)
{
NPT_SimpleMessageCapsule* capsule;
NPT_LOG_FINEST_1("popping message from queue, timeout=%d", timeout);
NPT_Result result = m_Queue.Pop(capsule, timeout);
if (NPT_SUCCEEDED(result) && capsule) {
if (capsule->m_Handler && capsule->m_Message) {
result = capsule->m_Handler->HandleMessage(capsule->m_Message);
}
delete capsule->m_Message;
delete capsule;
} else {
NPT_LOG_FINEST_1("m_Queue.Pop() returned %d", result);
}
return result;
}
|
