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Runtime

The runtime library (import (runtime)) provides procedures for interacting with the scheme-rs runtime.

collect-garbage procedure

(collect-garbage)

scheme-rs use a technique for garbage collection that interacts well with the Rust runtime known as concurrent cycle collection1. This means that the garbage collector for scheme-rs runs completely in parallel with the rest of the program. That can mean that ocassionally mean that the collector falls behind if the amount of allocations out paces its ability to collect them. To remedy this, a scheme program can force a pause by calling collect-garbage.

Over time the garbage collector should improve and the need for this should become less and less.

  1. BACON, D. F., AND RAJAN, V. T. Concurrent cycle collection in reference counted systems. In European Conference on Object-Oriented Programming (Budapest, Hungary, June 2001), J. L. Knudsen, Ed., vol. 2072 of Lecture Notes in Computer Science, Springer-Verlag, pp. 207–235 ↩