November 1969 - Vol. 12 No. 11
Features
An interactive graphical display monitor in a batch-processing environment with remote entry
A graphic monitor program is described. It was developed at Carnegie-Mellon University for the CDC G21 computer, which is a general purpose, batch-processing system with…
Synchronization in a parallel-accessed data base
The following problem is considered: Given a data base which can be manipulated simultaneously by more than one process, what are the rules for synchronization which will…
Performance monitoring in a time-sharing system
A software measurement facility which is part of a general purpose time-sharing system is described. The Data Collection Facility (DCF) has been implemented in the…
A practical method for constructing LR (k) processors
A practical method for constructing LR(k) processors is developed. These processors are capable of recognizing and parsing an input during a single no-backup scan in a…
APAREL—A parse-request language
APAREL is described: this language is an extension to an algorithmic language (PL/I) that provides the pattern-matching capabilities normally found only in special…