CSOM/PL a Virtual Machine Product Line
CSOM/PL is a Software Product Line (SPL) derived from applying Multi-Dimensional Separation Of Concerns (MDSOC) techniques to the domain of high-level language Virtual Machine (VM) implementations. For CSOM/PL, the authors modularised CSOM, a Smalltalk VM implemented in C, using VMADL (Virtual Machine Architecture Description Language). Several features of the original CSOM were encapsulated in VMADL modules and composed in various combinations. In an evaluation of their approach, they show that applying MDSOC and SPL principles to a domain as complex as that of VMs is not only feasible but beneficial, as it improves understandability, maintainability, and configurability of VM implementations without harming performance.