Multithreading
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This chapter describes Scheme48's fully preëmptive and sophisticated user-level thread system.  Scheme48 supports customized and nested thread schedulers, user-designed synchronization mechanisms, optimistic concurrency, useful thread synchronization libraries, a high-level event algebra based on Reppy's Concurrent ML [Reppy 99], and common pessimistic concurrency/mutual-exclusion-based thread synchronization facilities.

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     [file optimism.texi not included]
     [file synch.texi not included]
     [file cml.texi not included]
     [file pessimism.texi not included]
     [file custom.texi not included]