cdev-1.7.2n

extensions/cdevGenericServer/include/cdevReactor.h

@@ -0,0 +1,65 @@
+#ifndef _CDEV_REACTOR_H_
+#define _CDEV_REACTOR_H_ 1
+
+#include "cdevTime.h"
+#include "cdevHandleSet.h"
+#include "cdevEventHandler.h"
+
+class CDEV_REACTOR_API cdevReactor 
+{
+public:
+typedef enum	{
+	INPUT           =  0,
+	OUTPUT          =  1,
+	EXCEPTION       =  2,
+	SIGNAL          =  3
+	} REACTOR_EVENT;
+	
+typedef enum	{
+	REACTOR_ERROR   = -1,
+	SUCCESS         =  0,
+	INVALID_HANDLE  =  1,
+	INVALID_HANDLER =  2,
+	HANDLE_EXISTS   =  3,
+	UNKNOWN_HANDLER =  4,
+	INVALID_TIMEOUT =  5
+	} REACTOR_RESULT;
+
+typedef enum {
+	UNTIL_TIMEOUT = 0,
+	UNTIL_EVENT   = 1
+	} HANDLE_EVENT_FLAG;
+		
+protected:
+	static int          netInitCount;
+
+	int                 maxEntries;
+	int                 size;
+	cdevHandleSet       read_set;
+	cdevHandleSet       write_set;
+	cdevHandleSet       except_set;
+	cdevEventHandler ** handlers;
+	cdevEventHandler  * timers;
+
+private:
+	void calculateMask    ( void );
+	int  calculateTimeout ( cdevTime defaultPeriod, struct timeval &timeout );
+	int  handleFileEvent  ( cdevHandleSet * fds, REACTOR_EVENT event);	
+public:
+	cdevReactor          ( void );	
+	virtual ~cdevReactor ( void );
+	
+	virtual int checkHandlers    ( void );
+	virtual int registerHandler  ( cdevEventHandler * handler, unsigned mask );
+	virtual int removeHandler    ( cdevEventHandler * handler );
+	virtual int removeHandler    ( int fd );
+	virtual int extractHandler   ( cdevEventHandler * handler );
+	virtual int getHandler       ( int fd, cdevEventHandler * &handler );
+
+	virtual int registerTimer    ( cdevEventHandler * timer   );
+	virtual int cancelTimer      ( cdevEventHandler * timer   );
+	
+	virtual int handleEvents     ( cdevTime period = -1.0, int flags = UNTIL_TIMEOUT );
+};
+
+#endif