RE: buffering -- MI400

You can set the block size when you open the file.  Start looking in the
UFCB flags then in one of those extensions hung off the UFCB.  I don't need
to pull out my data areas ... right?

Richard Jackson
mailto:richardjackson@richardjackson.net
http://www.richardjacksonltd.com
Voice: 1 (303) 808-8058
Fax:   1 (303) 663-4325

-|-----Original Message-----
-|From: owner-mi400@midrange.com [mailto:owner-mi400@midrange.com]On
-|Behalf Of Leif Svalgaard
-|Sent: Saturday, October 07, 2000 5:38 PM
-|To: MI400@midrange.com
-|Subject: Re: buffering
-|
-|
-|I would rather not use an OVRDBF to set the block size. Isn't there
-|a way of setting that in the UFCB at open-time, maybe one of the
-|options in the variable part?
-|
-|Your idea of copying the whole lot in one go looks good; will try
-|that, once I can get it to read 128k in one go.
-|
-|----- Original Message -----
-|From: Richard Jackson <richardjackson@richardjackson.net>
-|To: <MI400@midrange.com>
-|Sent: Saturday, October 07, 2000 6:01 PM
-|Subject: RE: buffering
-|
-|
-|> I think that you could get it fast more quickly in C but there
-|aren't any
-|> facilities in C that you can't use in MI.  I always found that
-|writing IO
-|in
-|> MI to be a pain.  However, I have a suggestion for you:
-|>
-|> When you execute the IO that pulls in the 128k block from the file, take
-|the
-|> address of the beginning of the block from the IO feedback area and just
-|> copy the whole thing directly into the user space - in other
-|words, don't
-|> bother to read anything into a buffer, just copy it directly
-|from the VMC
-|> buffer.  Is there something that will copy more than 32k at a
-|time or are
-|> you stuck with CPYBLA?  If not, you have to make four operations.
-|>
-|> Richard Jackson
-|> mailto:richardjackson@richardjackson.net
-|> http://www.richardjacksonltd.com
-|> Voice: 1 (303) 808-8058
-|> Fax:   1 (303) 663-4325
-|>
-|> -|-----Original Message-----
-|> -|From: owner-mi400@midrange.com [mailto:owner-mi400@midrange.com]On
-|> -|Behalf Of Leif Svalgaard
-|> -|Sent: Saturday, October 07, 2000 2:52 PM
-|> -|To: MI400@midrange.com
-|> -|Subject: Re: buffering
-|> -|
-|> -|
-|> -|Thanks, Richard.
-|> -|As always you come through with good stuff.
-|> -|
-|> -|Language:  why, MI, of course.  :-)
-|> -|
-|> -|>
-|> -|> Are you using Dick's new sort APIs?
-|> -|
-|> -|No, a search for "Dick's new sort API" on IBM's sites
-|> -|did not turn up anything.
-|> -|
-|> -|
-|> -|
-|> -|
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