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Re: mlock in cache
- From: Christos <xristos dot tsop at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Cc: Andrew Haley <aph at redhat dot com>
- Date: Fri, 02 Aug 2013 16:03:36 +0100
- Subject: Re: mlock in cache
- References: <51FBBE65 dot 2000406 at gmail dot com> <51FBC1DE dot 3000501 at redhat dot com>
On 08/02/2013 03:27 PM, Andrew Haley wrote:
__builtin_prefetch() is what you need. However, there's no way you'll
be able to lock anything in L1: it'll be evicted very shortly
afterwards. Andrew.
Sorry for that, but from what I see __builtin_prefetch() just fetches in
advance the related pages but it does not guarantee that thy won't be
thrown out of the cache. I want to know if there is some way to prefetch
and lock some memory unit in cache. I'm pretty sure that there should be
a way for this to be done in assembly, but I don't know for C or some
gcc built-in
--
Christos Tsopokis