Trampolined style

A trampolined program is organized as a single loop in which computations a re scheduled and their execution allowed to proceed in discrete steps. Writ ing programs in trampolined style supports primitives for multithreading wi thout language support for continuations. Various forms of trampolining all ow for different degrees of interaction between threads. We present two arc hitectures based on an only mildly intrusive trampolined style. Concurrency can be supported at multiple levels of granularity by performing the tramp olining transformation multiple times.