COMMON CLASS: - a tool for programming the access to shared data

Resumé

The Monitor concept in Concurrent Pascal is too restrictive to express e.g. the ''Readers-Writers'' kind of access control to shared data. In order to make it possible to measure how the performance of a multiprogram changes when the access control to shared data is refined, we have added a construct, called a Common Class, to the Concurrent Pascal implementation on our multiprocessor system.