LINKM library

[Dave Gerdes]

> From: ront at niwot.CFNR.ColoState.EDU (Ronald E. Thomas)
> Message-Id: <9210221408.AA23148 at niwot>
> Sender: lists-owner at max.cecer.army.mil
> Reply-To: grassu-list at max.cecer.army.mil
> Precedence: Bulk
> To: dpgerdes at zorro.cecer.army.mil
> Subject: LINKM library 
> Cc: grassu-list at amber.cecer.army.mil
> 
> To Dave Gerdes, developer of src/libes/linkm library routines
> Dave,
> 	I'm a bit confused on the wisdom of updating (on my SUN 386i) to
> your linked memory library.  Does it affect programs already written, or is it
> a tool that source code has to be re-written for in order to use?  Also, does 
> GRASS4.0 have to be recompiled entirely in order for it to take effect? 
> Are these routines the ones that Mike Shapiro alluded to in a recent reply 
> to the lists when he mentioned improved vector performance in GRASS4.0 via
> fixes at the ftp site?
> 		Thanks!!
> 
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>    Ronald Thomas                         ^  ront at meeker.cfnr.colostate.edu
>     Natural Resource Spec. (GIS)         ^  
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There is no upgrade to the linkm library.  It is a new library which is
available for use by programmers if they desire to use it.  It is not something
that you would install retroactively to GRASS 4.0.  It was added because
a couple of Grass 4.1 programs utilize it.

I developed it because I constantly found myself re-writing similar code
for doing my own memory management.  For applications which fit what the 
library is designed for, it can be 3-7 times faster than using malloc() and 
free() from empirical tests I have done on Sun machines.


-- 



  Dave Gerdes
  US Army Construction Engineering Research Lab
  Spatial Analysis & Systems Team
  dpgerdes at zorro.cecer.army.mil
  (217) 352-6511 x591