From: "Frank Ch. Eigler" <fche@redhat.com>
To: Ben Elliston <bje@redhat.com>
Cc: sid@sources.redhat.com
Subject: Re: modeling latency (fwd)
Date: Sun, 24 Jun 2001 17:46:00 -0000 [thread overview]
Message-ID: <20010624204557.B19255@redhat.com> (raw)
In-Reply-To: <15158.32871.322836.589521@scooby.brisbane.redhat.com>
Hi -
bje wrote:
: [...]
: I agree that packing the bus::status struct should be considered
: important for performance, given that it is likely passed by value.
Right.
: As you suggest, there is a g++ extension to help with this: packed
: enums, but was never implemented. [...]
There may be other relevant extensions: bitfields?
In any case, until g++ is able to help us pack this structure, you
could arrange the code to do all this, by storing the status enum
explicitly within a host_int_2 (or even host_int_1) field, accompanied
by the appropriate casts.
- FChE
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next prev parent reply other threads:[~2001-06-24 17:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-17 20:28 Ben Elliston
2001-06-20 23:23 ` Ben Elliston
2001-06-21 4:21 ` Frank Ch. Eigler
2001-06-24 17:06 ` Ben Elliston
2001-06-24 17:46 ` Frank Ch. Eigler [this message]
2001-06-24 18:52 ` Ben Elliston
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