Is termios reentrant?

[chn at intego.de (Christian Haan)]

> On Thu, 29 Apr 1999, Christian Haan wrote:
> 
> > I'm experiencing lockups while reading and writing concurrently from
> > different tasks to the console. Isn't termios reentrant?
> 
> It is supposed to be.
> 
> The general termios structures are protected by a binary semaphore.
> Each open tty also has a binary semaphore associated with it. 
> 
> Notice that in c/src/lib/libc in rtems_termios_read, the entire operation
> is bracketed by proper calls to semaphore obtain and release.
> 
> And the read and writes use different semaphores so there should be no
> conflict there.
> 
> This does not mean there is not an implementation error in termios, only
> that the design is reentrant.

Sorry for the question. You termios is indeed reentrant. 
My problems were caused by some lost interrupts. Now that I catch these
everything works fine.

Christian

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