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Date: Mon, 19 Mar 2012 18:36:37 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: ~100KB usleep() memory leak
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On Mar 20 00:15, Konstantin Ivlev wrote:
> Hi All,
> 
> I have noticed ~100KB usleep() memory leak then compile mine
> application under Cygwin. On Mac OS X 10.7 Lion it works fine (no
> leak).
> I am using Cygwin 1.7.11 version.
> so, each call of usleep() I can see in Task Manager or Process
> Explorer about ~100KB of memory are leaked. it is not so problematic,
> but if I am using thread pool (e.g. 16 threads) it will leak about
> ~1MB per seconds, and several minutes of running application are
> enough to waste all available memory ~4GB.
> 
> it is easy to reproduce. compile the following really simple source code :
> 
> #include <unistd.h>
> 
> int main()
> {
> 	for (;;)
> 	{
> 		usleep(10);
> 	}
> }

Thanks for the report and the testcase.  I just applied a patch to fix
this memory leak.  I'm about tu generate a developer snapshot for
testing.  Please try the today's snapshot from http://cygwin.com/snapshots/
as soon as it is available.


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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