Path: utzoo!lsuc!attcan!utgpu!water!watmath!clyde!wtr@moss.ATT.COM
From: wtr@moss.ATT.COM
Newsgroups: comp.unix.microport
Subject: Re: /etc/shmcreate, how does it do it?
Message-ID: <30892@clyde.ATT.COM>
Date: 6 Aug 88 16:53:19 GMT
References: <162@focsys.UUCP>
Sender: nuucp@clyde.ATT.COM
Reply-To: wtr@moss.UUCP (Bill Rankin)
Organization: AT&T Bell Laboratories, Whippany NJ
Lines: 29

In article <162@focsys.UUCP> larry@focsys.UUCP (Larry Williamson) writes:
>
>On the same subject, although the 386 does not have a 64K segment
>size limit to its addressing, the parameters to shmget() seem to
>limit the size of a shared memory segment to 64K. The second
>parameter specifies the size in bytes of the segment, and this is
>an int. Therefore, only 65535 bytes can be specified! Is this, infact
    ^^^
>true, or is there something that I've overlooked?

possibly, on the 386 isn't the default int size 32-bits?
and not 16?  so we get 4-Giga word sizing instead of 64k.

i work on a 286 and have played around on 3b1s so this is 
by no means "from the horses mouth" :-)

>Thanks,
>   Larry

hope this helps!

=====================================================================
Bill Rankin
Bell Labs, Whippany NJ
(201) 386-4154 (cornet 232)

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