Type ASSEMBLE
Source Lines : 363
Fixes Applied : 0
Most Recent Version : Friday, August 7, 1981
Last Fix ID : [Unmodified]
Module
DMKDEH
Function
TO DYNAMICALLY ALTER OR AUGMENT THE VIRTUAL MACHINE
DEVICE CONFIGURATION OR STORAGE SIZE.
Attributes
REENTRANT, PAGEABLE, CALLED VIA SVC
Operation
STORAGE REDEFINED VIRTUAL STORAGE
STOR " " "
CHANNELS REDEFINES VIRTUAL CHANNELS
CHAN " " "
1. FOR DEFINE STORAGE, AFTER THE USUAL CHECKS FOR COMMAND
VALIDITY, THE USER MACHINE BLOCK IN THE CP DIRECTORY FOR THE
USER IS CHECKED TO ENSURE THAT THE DESIRED STORAGE SIZE DOES
NOT EXCEED THE MAXIMUM STORAGE SIZE PERMITTED TO THE USER.
(IF TOO LARGE, ERROR MESSAGE AND CODE RETURNED). IF OK, THEN
ALL TABLES PERTAINING TO THE STORAGE PRESENTLY IN USE FOR THE
USER'S VIRTUAL MACHINE ARE RETURNED TO FREE STORAGE, AND NEW
SEGMENT, PAGE, AND SWAP TABLES ARE CREATED BASED ON THE
REQUESTED STORAGE SIZE.
2. FOR DEFINE CHANNELS, AFTER THE VALIDATION OF THE COMMAND,
DMKCFPRR IS CALLED TO RESET THE VIRTUAL MACHINE. THE VIRTUAL
MACHINES CONTROL BLOCKS (I/O) ARE THE SCANNED, AND THE VIRTUAL
CHANNELS ARE FLAGGED ACCORDING TO THE OPTION REQUESTED. ANY
VIRTUAL CHANNEL THAT HAS A CTCA ATTACHED TO IT WILL BE FLAGGED
AS BEING A SELECTOR CHANNEL.
Calls to Other Routines
DMKCVTDB
DMKCVTBD
DMKERMSG
DMKUDRFU
DMKUDRRD
DMKUDRRV
DMKPGSPO
DMKCFPRR
DMKCFPRD
DMKBLDRL
DMKBLDRT
DMKQCNWT
DMKFREE