chickadee » srfi-18 » thread-wait-for-i/o!

thread-wait-for-i/o! FD #!optional MODEprocedure

Suspends the current thread until input (MODE is #:input), output (MODE is #:output) or both (MODE is #:all) is available. FD should be a file-descriptor (not a port!) open for input or output, respectively.