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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Storage management
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Date: Fri, 7 Nov 2008 15:41:39 +0100
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Date: 2008-11-07T15:41:39+01:00
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On Fri, 07 Nov 2008 14:28:14 +0100, Georg Bauhaus wrote:

> Dmitry A. Kazakov schrieb:
> 
>> There is no way Ada could abort I/O if the OS does not allow this. Second
>> to Get_Line, or likely the first wanted case is canceling blocking socket
>> read. I would give 98% that it never will work with ATC.
> 
> OK, yet, does there have to be an operating system
> that dictates how the Ada runtime does or does not
> abort I/O? :-)

Yes, an OO OS.

If there were no I/O, but blocking entry calls, they would be trivially
cancelable in a timed entry call.

In the milliseconds area an I/O is not cancelable not because of physical
reasons, like when the disk controller is busy positioning the heads. These
take microseconds.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de