Add (and use) generic reference counter, to improve signal:noise ratio

in code defining reference-counted objects.
This commit is contained in:
Michael Brown
2007-04-29 23:53:39 +00:00
parent 36bfb6edbb
commit d40761d725
8 changed files with 128 additions and 58 deletions

View File

@@ -7,6 +7,8 @@
*
*/
#include <gpxe/refcnt.h>
/** An object communication interface */
struct interface {
/** Destination interface
@@ -18,19 +20,14 @@ struct interface {
* unplugged, it should point to a null interface.
*/
struct interface *dest;
/** Update reference count
/** Reference counter
*
* @v intf Interface
* @v delta Change to apply to reference count
*
* This method updates the reference count for the object
* containing the interface.
* If this interface is not part of a reference-counted
* object, this field may be NULL.
*/
void ( * refcnt ) ( struct interface *intf, int delta );
struct refcnt *refcnt;
};
extern void plug ( struct interface *intf, struct interface *dest );
extern void null_refcnt ( struct interface *intf, int delta );
#endif /* _GPXE_INTERFACE_H */