$ENQ

   Queues a new lock or lock conversion on a resource.

   The $ENQ, $ENQW, $DEQ (Dequeue Lock Request), and $GETLKI (Get
   Lock Information) services together provide the user interface to
   the Lock Management facility.

   On Alpha and Integrity server systems, this service accepts 64-
   bit addresses.

   For additional information about system service completion, see
   the Synchronize ($SYNCH) service.

   Format

     SYS$ENQ  [efn] ,lkmode ,lksb ,[flags] ,[resnam] ,[parid]

              ,[astadr] ,[astprm] ,[blkast] ,[acmode] ,[rsdm_id]

              ,[nullarg]

   C Prototype

     int sys$enq  (unsigned int efn, unsigned int lkmode,

                  struct _lksb *lksb, unsigned int flags,

                  void *resnam, unsigned int parid, void

                  (*astadr)(__unknown_params), unsigned int acmode,

                  unsigned int rsdm_id,...);
 

Additional information available:

Arguments