cdev-1.7.2n

extensions/cdevGenericServer/cdevReactor/cdevBufferedSocket.h

@@ -0,0 +1,114 @@
+#ifndef _CDEV_BUFFERED_SOCKET_H_
+#define _CDEV_BUFFERED_SOCKET_H_
+
+#include "cdevSocketConnector.h"
+#include "cdevStreamQueue.h"
+
+class cdevBufferedSocket : public cdevSocketConnector, public cdevNodeFactory
+{
+private:
+	cdevNodeFactory * nodeFactory;
+	
+	int               magicNumber;
+	int               deleteFlag;
+
+	cdevStreamQueue   activeOut;
+	cdevStreamQueue   waitingOut;
+	int               outboundHeader[3];
+	size_t            headerXfrLen;
+	size_t            dataXfrLen;
+	
+	cdevStreamQueue   waitingIn;
+	cdevStreamNode *  rcvNode;
+	int               inboundHeader[3];
+	size_t            headerRcvLen;
+	size_t            dataRcvLen;
+	size_t            subPacketLen;
+	
+	static void sigPipeHandler (int);
+
+public:
+	enum {RETRYCNT = 1000 };
+	
+	inline cdevBufferedSocket ( int MagicNumber=0, int deleteNodes = 1, cdevNodeFactory * factory=NULL );
+
+	inline int              outboundReady   ( void );
+	inline int              inboundReady    ( void );
+	inline void             enqueueOutbound ( cdevStreamNode * node );
+	inline cdevStreamNode * dequeueInbound  ( void );
+
+	cdevStreamNode * newNode  ( ssize_t size );
+	ssize_t          transmit ( void ); 
+	ssize_t          receive  ( void );
+	
+	int              getBlockingSemantics ( void ) const;
+	int              getRcvBufferSize     ( void ) const;
+	int              getSndBufferSize     ( void ) const;
+};
+
+
+// *****************************************************************************
+// * cdevBufferedSocket::cdevBufferedSocket :
+// *	This is the constructor for the cdevBufferedSocket, it will initialize
+// *	all internal variables and sub-classes.
+// *****************************************************************************
+inline cdevBufferedSocket::cdevBufferedSocket ( int MagicNumber, int deleteNodes, cdevNodeFactory * factory )
+	: nodeFactory(factory),
+	  magicNumber(MagicNumber),
+	  deleteFlag (deleteNodes),
+	  activeOut(deleteNodes),
+	  waitingOut(deleteNodes),
+	  headerXfrLen(0),
+	  dataXfrLen(0),
+	  waitingIn(),
+	  rcvNode(NULL),
+	  headerRcvLen(0),
+	  dataRcvLen(0),
+	  subPacketLen(0)
+	{
+	if(nodeFactory==NULL) nodeFactory=this;
+	}
+
+
+// *****************************************************************************
+// * cdevBufferedSocket::outboundReady :
+// *	This method returns an integer value indicating that outbound data is
+// *	ready for transmission.
+// *****************************************************************************
+inline int cdevBufferedSocket::outboundReady ( void )
+	{
+	return !(activeOut.isEmpty() && waitingOut.isEmpty());
+	}
+
+// *****************************************************************************
+// * cdevBufferedSocket::inboundReady :
+// *	This method returns a flag indicating that inbound data is ready to be
+// *	dequeued and processed.
+// *****************************************************************************
+inline int cdevBufferedSocket::inboundReady ( void )
+	{
+	return !(waitingIn.isEmpty() && headerRcvLen==0);
+	}
+	
+// *****************************************************************************
+// * cdevBufferedSocket::enqueueOutbound :
+// *	This method places the user defined cdevStreamNode pointer into the 
+// *	waitingOut object.
+// *****************************************************************************
+inline void cdevBufferedSocket::enqueueOutbound ( cdevStreamNode * node )
+	{
+	waitingOut.enqueue(node);
+	}
+
+// *****************************************************************************
+// * cdevBufferedSocket::dequeueInbound :
+// *	This method dequeues the next available cdevStreamNode object from the
+// *	waitingIn object.
+// *****************************************************************************
+inline cdevStreamNode * cdevBufferedSocket::dequeueInbound ( void )
+	{
+	return waitingIn.dequeue();
+	}
+
+
+#endif /* _CDEV_BUFFERED_SOCKET_H_ */