IBM GY27-7236-1 MFT Supervisor Rel 21 PLM Mar72 free download

File name GY27-7236-1_MFT_Supervisor_Rel_21_PLM_Mar72.pdf

File No. S360-36 GY27-7236-1 Program Logic OS Release 21 IBM System/360 Operating System MPT Supervisor Program Number 360S-CI-505 This publication describes the internal logic of the MFT Supervisor. The MFT supervisor is one part of the control program of the IBM System/360 Operating System. The publication provides an introduction to control program logic and describes the supervisor components of the program. Specifically, the publication describes: Interruption Supervision Task Supervision Task Termination Contents Supervision Main Storage Supervision Communrcations Task Timer Supervision overlay Supervision Recording/Recovery Interfaces Checkpoint/Restart Device Independent Display Operator Console Support Program Logic Manuals are intended for use by per- sons involved in program maintenance, and system pro- grammers who are altering the program design. Program logic information is not necessary for program use and operation. Information in this publication applies only to sys- tems capable of multiprogramming with a fixed number of tasks CMFT). Second Edition (l1arch, 1972) This is a major reV1S1on of and makes obsolete GY28- 7236-0 and its associated TNL, GN27-136Q. This edition corresponds to Release 21 of Systeml360 Operating Sys- tem. It provides information concerning the Genera- lized Trace Facility and Status Display Support; enhan- cements and modifications to SYS1.LOGREC, RMS, DIDOCS, OLTEP, and ABEND; and other improvements and correc- tions to existing system features. Release 20 added information concerning SVC DU~P, RMS for the Models 165 and 155, Systeml370 Time-of-Day Clock, and the Extended Precision Floating Point Decim- al Simulator. Significant changes or additions to the specifications contained in this publication are continually being made. When using this publication in connection with the operation of IBM equipment, check the latest SRL Newsletter for revisions or contact the local IBM branch office. This publication was prepared for production using an IBM computer to update the text and to control the page and line format. Page impres- sions for photo-offset printing were obtained from an IBM lQ03 Printer using a special print train. Copies of this and other IBM publications can be obtained through IBM branch offices. A form for reader's comments appears at the back of this publication. Address any additional comments concerning the contents of this publica- tion to IBM Corporation, Programming Publications, Department 636, Neighborhood Road, Kingston, New York 12QOl ~ Copyright International Business Machines Corporation 1971, 1972 PREFACE This publication describes the MFT