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Re: iterations

From: "Frank Ch. Eigler" <fche at redhat dot com>
To: Martin Hunt <hunt at redhat dot com>
Cc: systemtap at sources dot redhat dot com
Date: Thu, 17 Mar 2005 13:11:46 -0500
Subject: Re: iterations
References: <1111079053.5668.3.camel@tiger> <4239BC22.30307@redhat.com> <1111081107.5668.14.camel@tiger> <1111081938.5668.24.camel@tiger>

Hi -


hunt wrote:

> [...]
> BTW, I should also mention that I realize that the state data stored in
> the map struct must be valid between calls.  That will be changed to be
> per-cpu data to eliminate conflicts with multiple CPUs.
> 
> So _stp_map_key_xxx() only needs a reader lock as does _stp_map_get_xxx
> ().  _stp_map_set_xxx() and _stp_map_key_del() need a writer lock.

It may be just as useful to leave the chore of all such
locking explicitly to the translator.


- FChE

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