回复:Re: =?gb2312?q?=BB=D8=B8=B4=3ARe=3A=20Puzzled=20at?= store_client->seen_offset(copy_offset).

Thanks, Henrik pal!

What means the following in you reply?

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.

I search it in clientHandleIMSReply, client_cide.c and find sometimes
the value are different.

But the case you mentioned puzzled me, I do not understand your case.
Can you give me a more detailed descrption on your case?

Bset regards,
George Ma

----- 原文 -----
From: Henrik Nordstrom
To: maer727@sohu.com
Cc: squid-dev@squid-cache.org
Subject: Re: =?gb2312?q?=BB=D8=B8=B4=3ARe=3A=20Puzzled=20at?= store_client->seen_offset(copy_offset).
Sent: Wed Apr 24 14:25:44 CST 2002

> 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 Thu Apr 25 2002 - 23:02:11 MDT