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

To: "Anthony Liguori" <aliguori@xxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] libxen-3.0 (libxc rewrite)
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Tue, 22 Mar 2005 16:25:10 -0000
Cc: <Christian.Limpach@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxxx>, <ian.pratt@xxxxxxxxxxxx>, <ian.pratt@xxxxxxxxxxxx>
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Thread-index: AcUu+ms61ZeIvToRSnu9tSvZ+eROSQAAPIhg
Thread-topic: [Xen-devel] [PATCH] libxen-3.0 (libxc rewrite)
> >Personally, I think the best approach is to stick with the existing C
> >convention that everyone is already well familiar with, and have a
> >separate errno variable. This means we can then have functions return
> >pointers etc rather than having to pass them by reference, which is
> >undeniably ugly. 
> >  
> >
> 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.

No -- We want to use the normal libc errno, like other libraries!

Ian


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