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#ifndef _GPXE_INTERFACE_H
#define _GPXE_INTERFACE_H
/** @file
*
* Object communication interfaces
*
*/
/** An object communication interface */
struct interface {
/** Destination interface
*
* When messages are sent via this interface, they will be
* delivered to the destination interface.
*
* This pointer may never be NULL. When the interface is
* unplugged, it should point to a null interface.
*/
struct interface *dest;
/** Update reference count
*
* @v intf Interface
* @v delta Change to apply to reference count
*
* This method updates the reference count for the object
* containing the interface.
*/
void ( * refcnt ) ( struct interface *intf, int delta );
};
extern void plug ( struct interface *intf, struct interface *dest );
extern void null_refcnt ( struct interface *intf, int delta );
#endif /* _GPXE_INTERFACE_H */
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