J. L. W. Kessels
Advertisement
Author Archives
An alternative to event queues for synchronization in monitors
In the monitor concept, as proposed by Brinch Hansen and Hoare, event queues are used for synchronization. This paper describes another synchronizing primitive which is nearly as expressive as the conditional wait, but can be implemented more efficiently. An implementation of this primitive in terms of P and V operations is given together with a correctness proof. Two examples are presented: the readers and writers problem and the problem of information streams sharing a finite buffer pool.
Minimizing wasted space in partitioned segmentation
A paged virtual memory system using a finite number of page sizes is considered. Two algorithms for assigning pages to segments are discussed. Both of these algorithms are simple to implement. The problem of choosing the page sizes to minimize the expected value of total wasted space in internal fragmentation and in a page table, per segment, is then solved for a probability density function of segment size which may be expressed as a convex combination of Erlang densities.
Shape the Future of Computing
ACM encourages its members to take a direct hand in shaping the future of the association. There are more ways than ever to get involved.
Get Involved