Risorsa Analitica di Monografia

Garbage Collection frees the programmer from the burden of explicitly deallocating unused data. This facility induces a considerable overhead but also causes some delays that may affect real–time applications. Guaranteed throughput (with at most short and predictable delays) is needed in many applications such as plane or plant control and requires at least a worst case analysis to identify the performances of the whole system. Traditional GC are made of two phases : the marker which identifies all useful data, followed by the sweeper which reclaims all useless data. On–the–fly GC schemes were introduced to permit an application and a collector to run concurrently. That concurrency may lessen the GC penalty incurred by the application