Table of Contents

DMSCWT Abstract

Statistics

Type ASSEMBLE
Source Lines : 94
Fixes Applied : 0
Most Recent Version : Tuesday, December 12, 1978
Last Fix ID : [Unmodified]

Synopsis

Function 

       TO  CAUSE  THE  CALLING PROGRAM  TO  WAIT  UNTIL  ALL
       TERMINAL I/O OPERATIONS HAVE BEEN COMPLETED.

Attributes 

     REENTRANT, NUCLEUS RESIDENT, CALLED BY SVC

Operation 

       DMSCWT CHECKS THE NUMBER OF PENDING READS AND PENDING
       WRITES.  IF  BOTH  ARE NOT  ZERO,  DMSCWT  BALR'S  TO
       ROUTINE DMSWAT TO WAIT UNTIL A TERMINAL I/O OPERATION
       IS COMPLETED.  UPON RETURN  FROM DMSWAT, DMSCWT AGAIN
       CHECKS  THE  NUMBER  OF  PENDING  READS  AND  PENDING
       WRITES. THIS PROCEDURE IS REPEATED UNTIL ALL TERMINAL
       I/O  REQUESTS HAVE  BEEN  COMPLETED.   AT THIS  TIME,
       DMSCWT RETURNS TO THE CALLING ROUTINE.

Calls to Other Routines 

            DMSWAT - WAIT FOR I/O INTERRUPT