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/***************************************************************************
programchain.cpp - description
-------------------
begin : Sat Sep 6 2003
copyright : (C) 2003 by Mike Buland
email : eichlan@yf-soft.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <stdlib.h>
#include "programchain.h"
ProgramChain::ProgramChain()
{
pLog = MultiLog::getLog();
pLog->LineLog( MultiLog::LStatus, "Program Chain Initialized." );
}
ProgramChain::~ProgramChain()
{
}
bool ProgramChain::addLink( ProgramLink *pLink )
{
if( pLink->init() == false )
{
emergencyShutdown();
return false;
}
lLink.append( pLink );
pLink->setChain( this );
return true;
}
ProgramLink *ProgramChain::getLink( const char *lpName )
{
char a;
a = lpName[0];
return NULL;
}
ProgramLink *ProgramChain::getBaseLink()
{
return NULL;
}
bool ProgramChain::execChainOnce()
{
int nLen = lLink.getSize();
for( int j = 0; j < nLen; j++ )
{
if( ((ProgramLink *)lLink[j])->timeSlice() == false )
{
pLog->LineLog( MultiLog::LInfo, "Shutting down due to signal from link #%d", j );
emergencyShutdown();
return false;
}
}
return true;
}
bool ProgramChain::enterChainLoop()
{
for(;;)
{
if( execChainOnce() == false )
{
return false;
}
}
return true;
}
void ProgramChain::emergencyShutdown()
{
int nLen = lLink.getSize();
for( int j = 0; j < nLen; j++ )
{
((ProgramLink *)lLink[j])->deInit();
delete (ProgramLink *)lLink[j];
}
lLink.empty();
}
LinkMessage *ProgramChain::broadcastIRM( LinkMessage *pMsgOut, ProgramLink *pSender )
{
int nLen = lLink.getSize();
for( int j = 0; j < nLen; j++ )
{
LinkMessage *pMsg = ((ProgramLink *)lLink[j])->processIRM( pMsgOut );
if( pMsg != NULL )
{
delete pMsgOut;
return pMsg;
}
}
delete pMsgOut;
return NULL;
}
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