1 files changed, 113 insertions, 0 deletions

diff --git a/src/programchain.cpp b/src/programchain.cpp
new file mode 100644
index 0000000..4e53ac8
--- /dev/null
+++ b/src/programchain.cpp
@@ -0,0 +1,113 @@
+/***************************************************************************
+                          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;
+}