Subject: Re: realloc
To: Bill Studenmund <>
From: Jason Thorpe <>
List: tech-kern
Date: 06/03/1996 23:17:12
On Mon, 3 Jun 1996 18:15:54 -0700 (PDT) (Bill Studenmund) wrote:

 > I am trying to port some Mach kernel code (a Mac file system
 > vfs package), and am wondering what to do about some calls
 > in it, namely calles to realloc(existing pointer, new size).
 > Should I just change them to free(existing, M_);
 > malloc(new size, M_, flags)? Or is there a better way?

Well, don't forget to copy the data before free'ing :-)

I haven't really looked at Mach code for a while.  Which version of Mach 
is this VFS for?  It might be relatively easy to port one of the Mach 
realloc's to NetBSD (given that it uses Mach-derived VM).

If it were useful, a real realloc() would be cool, otherwise, writing a 
macfs_realloc() that does the simple ralloc algorithm might be appropriate.

----save the ancient forests -
Jason R. Thorpe                             
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