Re: [Xen-devel] [PATCH] libxen-3.0 (libxc rewrite)

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Nivedita Singhvi wrote:

> Anthony Liguori wrote:
>
> > There's only one problem with this: thread-safety.  I believe errno 
> > is commonly implemented in thread-local storage.  We'd have to jump 
> > through major hoops to get our own proper errno.
>
> Anthony - not sure what you are referring to here, because
> the common use is to use the global errno made available
> in libc. Is that not a proper errno?
Some libraries implement their own psuedo-errno to store library 
specific errors.  To the best of my knowledge, with the exception of 
system libraries (libc) errno is not used and not really supposed to be 
used.
I could be wrong, but I can't think of any libraries that use it.

> thanks,
> Nivedita


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