Joeq A Virtual Machine and Compiler strongInfrastructurestrong.pdfVIP

Joeq: A Virtual Machine and Compiler Infrastructure John Whaley Computer Systems Laboratory Stanford University Stanford, CA 94305 jwhaley@ Abstract Second, we wanted the system to be easy to experiment with. As its primary focus is research, it should be straightforward to prototype Joeq1 is a virtual machine and compiler infrastructure designed to new ideas in the framework. With this in mind, we tried to make facilitate research in virtual machine technologies such as Just-In- the system as modular as possible so that each component is easily ˜ Time and Ahead-Of-Time compilation, advanced garbage collec- replaceable. Learning from our experience with Jalapeno, another tion techniques, distributed computation, sophisticated scheduling virtual machine written in Java, we decided to implement the entire algorithms, and advanced run time techniques. Joeq is entirely im- system in Java. This makes it easy to quickly implement and proto- plemented in Java, leading to reliability, portability, maintainabil- type new ideas, and features like garbage collection and exception ity, and efficiency. It is also language-independent, so code from tracebacks ease