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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: dynamic memory allocation
Date: 1997/06/17
Message-ID: <dewar.866579926@merv>#1/1
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References: <33A55F1B.63FE@gsfc.nasa.gov> <dewar.866539898@merv>
 <33A6AE5C.74CD@no.such.com>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-06-17T00:00:00+00:00
List-Id: <comp.lang.ada>


Wes said

<<If they're using out-of-the-box Verdix (now Rational?) the heap
WILL become fragmented.  I've heard but not verified the same about
Alsys.>>

Much too strong a statement. Whether a given pattern of allocations causes
fragmentation with a given storage allocatoin algorithm is highly dependent
on the pattern. For any particular algorithm, there surely will be a pattern
of allocatoins that does NOT cause fragmentation. On most allocators, the
use of all fixed size blocks will guarantee no fragmentation, but you cannot
count on this without knowing the algorithm used.