ANSI INCITS TR 7 : 1989

Withdrawn

INFORMATION PROCESSING SYSTEMS TECHNICAL REPORT - USER DOCUMENTATION FOR CONSUMER SOFTWARE PACKAGES

Available format(s)

Hardcopy , PDF

Withdrawn date

07-23-2013

Language(s)

English

Published date

01-01-1989

Publisher

Information Technology Industry Council

1. Introduction
2. Explanation
   2.1 Overview
       2.1.1 Scope of Extensions
       2.1.2 Concepts and Terminology
   2.2 Job Structure
       2.2.1 Attributes and Scope Rules
       2.2.2 Task Structure
       2.2.3 Task States
       2.2.4 Task Termination
       2.2.5 Discussion
   2.3 Protection of Shared Variables
       2.3.1 The LOCK Statement
       2.3.2 Lock States
       2.3.3 Rules For Shared Variables
       2.3.4 Discussion
   2.4 Time
   2.5 Synchronization and Scheduling
       2.5.1 Events and Event-lists
       2.5.2 The WAIT Statement
       2.5.3 The SCHEDULE Statement
       2.5.4 Signals and On-units
   2.6 Input/Output
       2.6.1 Device I/O
       2.6.2 Shared Files
       2.6.3 Shared Records
       2.6.4 Extra-Lingual File Sharing
3. Language Extensions
   3.1 Attributes
       3.1.1 PROGRAM
       3.1.2 SHARED
       3.1.3 SHAREDRECORDS
   3.2 Statements
       3.2.1 ABORT
       3.2.2 CONNECT
       3.2.3 DISCONNECT
       3.2.4 LOCK
       3.2.5 SCHEDULE
       3.2.6 WAIT
   3.3 Built-in Functions
       3.3.1 ABANDONED
       3.3.2 ADDINTERVAL
       3.3.3 DATETIME
       3.3.4 DELAY
       3.3.5 INTERVAL
       3.3.6 PRIORITY
       3.3.7 RECORD
   3.4 Pseudo-variable
       3.4.1 PRIORITY

Provides extensions to programming language PL/I and to its general-purpose subset. Provides: - the ability for multiple PL/I programs to share variables and files so as to ensure that all shared objects always have a consistent state; - the ability for a program to schedule the execution of another program called as task; - the ability for a task to delay its own execution until a specific event has occurred; - the ability for a task to abort itself or any other task leaving the machine in a well-defined state; - the ability for a task to respond to asynchronous interrupts and/or data transmissions from devices.