Multitasking without Compromise: a Virtual Machine Evolution

摘要

The Multitasking Virtual Machine (called from now on simply MVM) is a modification of the JavaTM virtual machine. It enables safe, secure, and scalable multitasking. Safety is achieved by strict isolation of applications from one another. Resource control mechanisms augment security by preventing some denial-of-service attacks. Improved scalability results from an aggressive application of the main design principle of MVM: share as much of the runtime as possible among applications and replicate everything else. The system can be described as a 'no compromise' approach - all the known APIs and mechanisms of the Java programming language are available to applications. MVM is implemented as a series of carefully tuned modifications to the Java HotSpot~(TM) virtual machine, including the dynamic compiler.