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List:       kde-devel
Subject:    Re: memory leak?
From:       Bernd Gehrmann <bernd () physik ! hu-berlin ! de>
Date:       1999-11-02 21:12:53
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On Tue, 02 Nov 1999 Josef Weidendorfer wrote:

>>It is possible to force memory to be returned to the OS by malloc'ing 
>>memory in big enough chunks. If you allocate
>>e.g. 64Kb this will be returned to the OS immediately once you free it. 
>
>Are you really sure about this?
>It depend's on the malloc implementation of libc. 

Right, it depends on the implementation. glibc has a twofold
strategie: little blocks are allocated (with some bookkeeping)
in the program's heap (which is - when needed - extended via
brk()), big blocks are allocated via mmap().

Bernd.

P.S. Please don't use Reply-To headers on a mailinglist.

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