Re: 回复:Re: Puzzled at store_client->seen_offset(copy_offset).

Valid enoug reason to look at the 2.4 code..

Both are from the storeClientCopy() call.

seen_offset == I (the one calling storeClientCopy) have already seen up to
this point in the object. Don't bother me until there is more data available.

copy_offset == I want data starting at this offset in the object.

They differ in the case where the data available is not sufficient to process
it. In such case seen_offset is greater than copy_offset.

Regards
Henrik

maer727@sohu.com wrote:
> Thanks, Henrik pal!
>
> I think it is no use to understand seen_offset but
> what is the meaning and function of copy_offset? :-)
>
> Btw: my work now in my lab is to develop a system which is based
> on squid-2.4, so if it does not matter very much, can you give me
> a simple explanation about the meaning and function of the variable? :-)
> I am reading the source of a content delivery system which is based on
> squid-2.4. Our aim is to adapt it to freeware. Now it is not a freeware and
> just used in the lab. You know, reading earlier version of software is a
> boring thing but I have to do it. :-(
>
> I have skip as much as possible in earlier versions of Squid but I think
> I can not skip seen_offset, without it I can not understand the memory
> format of the store_client.
>
> I am a newbie of Squid and our system. I will thank again for your help
> these days.
>
> Best regards,
> George Ma
> ----- 原文 -----
> From: Henrik Nordstrom
> To: maer727@sohu.com ;squid-dev@squid-cache.org
> Subject: Re: Puzzled at store_client->seen_offset(copy_offset).
> Sent: Wed Apr 24 00:05:42 CST 2002
>
> > seen_offset no longer exists in Squid-HEAD. I see no reason to explain
> > this odd and error prone design which we have already decided to abandon.
> >
> > Regards
> > Henrik
> >
> > maer727@sohu.com wrote:
> > > Hi, pals!
> > >
> > > What is the meaning and function of store_client->seen_offset?
> > > I search store_client->seen_offset is source files. I find
> > > only store.c and stat.c use the variable. But I failed to find
> > > the meaning and function of the variable.
> > >
> > > Can you give me a simple explanation about the meaning and
> > > fucntion of store_client->seen_offset and store_client->copy_offset?
> > > What is the difference between store_client->seen_offset and store_
> > > client->copy_offset?
> > >
> > > Best regards,
> > > George Ma
Received on Wed Apr 24 2002 - 00:25:54 MDT