Re: Funnel Funnel Funnel
Re: Funnel Funnel Funnel
- Subject: Re: Funnel Funnel Funnel
- From: Ramble Leon <email@hidden>
- Date: Fri, 12 Mar 2004 20:41:14 -0800 (PST)
Thanks, does it mean any syscall will hold a funnel
when it enter kernel? If no thread_funnel_switch
inside, a syscall cannot be called by two or more
threads running on differenct processors at same time,
is it right?
--- Quinn <email@hidden> wrote:
>
At 2:04 -0800 12/3/04, Ramble Leon wrote:
>
>Hi, I'm confused by funnel in darwin, I was
>
reading
>
>some source code of nfs, there is no
>
thread_funnel_set
>
>can be found in some vfs syscall, but there are
>
many
>
>thread_funnel_switch inside nfs implement, when did
>
>the system call get the kernel_funnel?
>
>
Funnels are acquired as part of system call entry.
>
Check out the
>
sy_funnel field of the sysent structure.
>
>
S+E
>
--
>
Quinn "The Eskimo!"
>
<http://www.apple.com/developer/>
>
Apple Developer Technical Support * Networking,
>
Communications, Hardware
>
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