Re: Speedup insert into treestore

[muppet <scott asofyet org>]

On Oct 12, 2005, at 9:54 AM, Steven Walter wrote:

> Further, since most (all?  please advise here) architectures use  
> word-aligned pointers, we can be guaranteed that the lowest bit  
> will always be zero in a valid pointer.

Pedantically, malloc'd pointers are typically double-word-aligned to  
allow the allocated memory to be used to store any datatype, and SV*s  
will always be pointers to structures that will need such alignment.   
You can have non-aligned pointers, e.g. to bytes in a string, but an  
int that is not aligned is expensive to access.  All modern systems i  
know of return aligned pointers from malloc(), though there is no  
hard requirement for this.  The entire concept of undead references  
is private to GObject.xs, so if we encounter a situation in which  
this breaks, we have ways to work around it.


> Glib with applied patch passes all tests, as well as all Gtk tests,  
> as well as fixes muppet's indicated test case.  Suggestions?

I'm okay with the patch.


--
I like drawing and painting.  If you make something really weird,  
that means "abstract".
  -- Some kid on a PBS kid's show.