xcalloc called from signal handler

[Peter Hutterer]

Matthieu Herrb wrote:
> Hi,
> 
> As far as I know the malloc() family of function is not async-signal
> safe on most of the systems that X.Org supports (including Linux,
> Solaris and *BSD).
> 
> Unfortunalty the xserver 1.4 new Xinput code calls xcalloc() in
> functions that are called by the SIGIO handler. This has been identified
> as the cause of many X server segfaults on OpenBSD, and will probably
> also cause random problems on other systems.
> 
> Unfortunatly I don't really know enough about Xinput to provide a proper
> fix. The patch I'm attaching here is just a ugly hack to fix the issue
> for the short term.


A bit late but I have committed your patch. I need to check whether
there are other allocs during the event generation but this was the main
bunch.

Thanks! sorry about the delay.

Cheers,
    Peter