In message <[EMAIL PROTECTED]>
Dan Sugalski <[EMAIL PROTECTED]> wrote:
> At 8:11 AM +0100 7/3/03, Alan Burlison wrote:
> >Dan Sugalski wrote:
> >
> >>I'm pretty sure the POSIX docs say that you can't call mutex
> >>routines from within interrupt code, which makes sense--the last
> >>thing you want is for an interrupt handler to block on a mutex
> >>aquisition.
> >
> >I haven't got a copy, but I'd be surprised if they explicitly
> >forbade it - I think however you *do* need to be very careful if you
> >need to mix mutexes and signals, so that you don't self-deadlock.
>
> I don't have a copy handy anymore either, unfortunately, but
> Butenhof's pretty clear--none of the Posix thread functions are async
> safe. (Section 6.6.6, p234-235 in my copy) I seem to remember someone
> scolding me about this, or something like it, ages ago.
The POSIX docs (or rather their successor, the SuS docs) can be
found online - the current version is at:
http://www.opengroup.org/onlinepubs/007904975/toc.htm
Specific documentation the the pthread routines is at:
http://www.opengroup.org/onlinepubs/007904975/basedefs/pthread.h.html
Tom
--
Tom Hughes ([EMAIL PROTECTED])
http://www.compton.nu/
