RE: guaranteed up-to-date BDB backup?

[Adam Williams <awilliam@whitemice.org>]

>Do you happen to know if Linux supports shared mutexes?
>I can't see anything about it in the pthread mutex manpages.

I assume not.  There doesn't seem to be any reference to 
pth_alloc_shared_mutex or pth_initialize_shared.  But I suppose they could 
be called something different.  

>From googleing about they seem to only exist in ngpt (next generation 
pthreads) and kernel 2.5.x

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