Path: utzoo!attcan!uunet!husc6!rutgers!columbia!douglass!dupuy
From: dupuy@douglass.columbia.edu (Alexander Dupuy)
Newsgroups: comp.sources.bugs
Subject: bug in sps memory size reporting for Sun-3
Summary: Sun-2 != Sun-3
Message-ID: <5654@columbia.edu>
Date: 20 May 88 00:27:38 GMT
Sender: nobody@columbia.edu
Reply-To: dupuy@columbia.edu (Alexander Dupuy)
Organization: Columbia University Computer Science Dept.
Lines: 40

I'm shocked I never noticed this before, but lots of programs (like the csh)
report erroneous memory sizes.  At any rate, the Sun-2 and Sun-2 have different
page sizes (2K for the Sun-2, 8K for the Sun-3).  The header file sps.h assumed
that all Suns would have a page size of 2K.

Here are the diffs:
*** sps.h.dist	Tue Feb 24 18:44:50 1987
--- sps.h	Thu May 19 20:20:49 1988
***************
*** 22,31 ****
  # endif
  
  /* Convert clicks to kbytes ... */
! # ifdef SUN
  # define        KBYTES( size )  ((size) << 1)
  # else
  # define        KBYTES( size )  ((size) >> (10 - PGSHIFT))
  # endif
  
  /* Standard files to be examined ... */
--- 22,35 ----
  # endif
  
  /* Convert clicks to kbytes ... */
! # ifndef PGSHIFT
  # define        KBYTES( size )  ((size) << 1)
  # else
+ # if PGSHIFT > 10
+ # define        KBYTES( size )  ((size) << (PGSHIFT - 10))
+ # else
  # define        KBYTES( size )  ((size) >> (10 - PGSHIFT))
+ # endif
  # endif
  
  /* Standard files to be examined ... */

@alex

inet: dupuy@columbia.edu
uucp: ...!rutgers!columbia!dupuy