From: "Monica Dsz" <monica.dsz@googlemail.com>
To: "Andrew Lunn" <andrew@lunn.ch>
Cc: "ecos discuss" <ecos-discuss@ecos.sourceware.org>
Subject: Re: [ECOS] why is it wrong to call cyg_semaphore_post() in ISR???
Date: Fri, 09 Jun 2006 09:43:00 -0000 [thread overview]
Message-ID: <000d01c68ba8$f4a071c0$ea14a8c0@taurus> (raw)
In-Reply-To: <20060609092658.GX15066@lunn.ch>
> Normally, you try not to disable interrupts in RTOS's. You should
> protect your critical regions with mutex's, semaphores etc.
>
I remember well that I(we in our company) have used intLock () in VxWorks to
make sure that interrupt doesnt during some critical sections. Ofcourse we
did use semaphores and mutexes to guard against other threads but as far as
I remember i never used semaphores/mutexes to guard against interrupts.
lockKey = intLock ();
... (work with interrupts locked out)
intUnlock (lockKey);
Seems in eCos we dont need to disable interrupts because interrupts doesnt
perform any kernal calls and we can use DSR to give semaphores and etcthank
you
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next prev parent reply other threads:[~2006-06-09 9:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-08 17:39 Monica Dsz
2006-06-08 18:06 ` Gary Thomas
2006-06-09 7:23 ` Monica Dsz
2006-06-09 9:19 ` Monica Dsz
2006-06-09 9:27 ` Andrew Lunn
2006-06-09 9:43 ` Monica Dsz [this message]
2006-06-20 12:52 Goldschmidt Simon
2006-06-20 13:12 ` Andrew Lunn
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