The Concurrent ML Reference Manual


The OS.IO structure

The OS.IO structure provides a general interface for polling I/O devices, which has been modelled after the Unix SVR4 poll interface. A poll_desc, created from an I/O descriptor, can be used to test for various polling conditions.


Synopsis

signature CML_OS_IO
structure IO : CML_OS_IO

Interface

include OS_IO
val pollEvt : poll_desc list -> poll_info list event

Description

pollEvt l
polls a list of poll descriptors l. This will raise OS.SysErr if, for example, one of the file descriptors refers to a closed file.


See Also

OS, OS.IO

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Last Modified April 30, 1996
Comments to John Reppy.
Copyright © 1997 Bell Labs, Lucent Technologies


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