Re: select() on serial port

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#6104

From: Eelke
Date: Thu, 09 Jun 2005 06:44

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Patrick Rotsaert wrote:
> Sounds promising!
> Do you know of any good examples on overlapped IO, events and such. 
> Reading the microsoft help does not make it any easier ;-)
> 
Most of my knowledge comes from the book Advanced Win32 Programming from 
Microsoft Press and I also have had a course on concurrent programming 
(thought we used NeXT for that course) so I can't give a link. I have 
never used overlapped IO myself but I can give you a quick idea of how 
to use Event  objects.

An event object is an object that can have two states signaled or 
non-signaled. A thread can use wait functions on an Event object to wait 
until the object goes into the signaled state. In case of the use of 
events with overlapped IO and sockets windows will put the event in the 
signalled state when certain conditions are met like the overlapped IO 
transfer is completed or data is available for reading on a socket.

Eelke

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