[ECOS] About: Re: [ECOS] io_read

[Sicheri Marco]

Thanks Andrew, Gary, and Nick,
I'll try! :-)
But, I have a query about this problem:
I have two thread, thread A and thread B.
Thread A (priority: 5) do only:
diag_printf(...);
Thread B (priority: 30) do the (famous) io_read.
So:
If Thread A and B do only the diag_printf, they work Ok and I can see the
message by HyperT.
If Thread B do the io_read and it is lock (no data in the io), I don't see
the msg of thread A.
So:
I don't see the msg of thread A because it don't work?
If the thread B work hard, the thread A don't work?
In this moment (cause crash) i don't have the JTAG debugger for check if the
thread A work or don't work. I can check and debug my application with the
diag_printf only. So that i don't undestand....
Thanks! Best Regards!

Ossequi,  (Best Regards/Obrigado)
Marco SICHERI
CTS electronics  - R&D Department
phone: +39 0125 235637, +39 0125 235630
e-mail: m.sicheri@ctsgroup.it
http://www.ctsgroup.it


----- Original Message ----- 
From: "Nick Garnett" <nickg@ecoscentric.com>
To: "Andrew Lunn" <andrew@lunn.ch>
Cc: "Sicheri Marco" <m.sicheri@ctsgroup.it>; "eCos Discus.List"
<ecos-discuss@sources.redhat.com>
Sent: Friday, October 08, 2004 5:59 PM
Subject: Re: [ECOS] io_read


> Andrew Lunn <andrew@lunn.ch> writes:
>
> > On Fri, Oct 08, 2004 at 05:27:37PM +0200, Sicheri Marco wrote:
> > > Thanks Andrew, I had think to use the cyg_io_select (like uclinux) but
I
> > > don't found the cyg_io_select() doc. man cyg_io_select don't do....:o(
> > > Please, (you are the angel) can you have the doc of this function? ^_*
> > > If i don't read you email today: Good weekend!!
> >
> > I've never used it myself......
> >
> > There does not appear to be any documentation for it either.
> >
> > You will have to read the source and figure it out yourself :-(
>
> cyg_io_select() is intended to be called from the fileio select()
> function. It passes the call on to the underlying device, its just a
> support function.
>
> To use select() you need to use the fileio package.
>
> -- 
> Nick Garnett                    eCos Kernel Architect
> http://www.ecoscentric.com/     The eCos and RedBoot experts


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