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If we wish to count lines of code, we should not regard them as *lines produced* but as *lines spent*. – Edsger Dijkstra
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Daily link icon Saturday, March 1, 2003

Continuations used to speed up OS kernels

Via Ltu, via Green Hat Journal what looks like an interesting research paper from Microsoft on Control Transfer in Operating System Kernels. It's from 1994, but the results are probably still relevant - I don't know that its conclusions have been implemented in any operating system.

My thesis is that a programming language abstraction, continuations, can be adapted for use in operating system kernels to achieve increased flexibility and performance for control transfer. The flexibility that continuations provide allows the kernel designer when necessary to choose implementation performance over convenience, without affecting the design of the rest of the kernel. The continuation abstraction generalizes existing operating system control transfer optimizations.

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