interesting fact about StrCaseCmp

Ludolf Holzheid lholzheid at
Tue Feb 18 21:49:28 GMT 2003

In the embedded/real time world, malloc() and friends are strongly 
deprecated as you can't predict how long they will take. They have to 
go through a linked list of unknown length and may even start a 
garbage collection.

If StrCaseCmp() is really that sensitive w.r.t. processor cycles, you 
better keep the malloc()ed buffers between the calls and increase 
their size (by calling free() and malloc(), not realloc()) if the 
strings to be compared do not fit.

(well, if the string lengths are really not limited, this may turn 
out as a memory leak...)


On 18 Feb 2003 at 8:04, jra at wrote:

> On Tue, Feb 18, 2003 at 06:23:41PM +1100, Martin Pool wrote:
> > One little malloc() could hardly make it any worse, although I will do
> > a test tomorrow to check.
> "One little malloc()" - I'll remind you of that quote later :-).
> But please do the test, that's the only way we can really
> be sure if it's a speedup or not.
> Jeremy.

Ludolf Holzheid             Tel:    +49 621 339960
Bihl+Wiedemann GmbH         Fax:    +49 621 3392239
Flosswoerthstrasse 41       e-mail: lholzheid at
D-68199 Mannheim, Germany

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