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Date:	Mon, 19 Mar 2012 22:15:34 +0100
From:	marco atzeri <marco DOT atzeri AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: ~100KB usleep() memory leak
References:	<CAL3tVqvssDG2-eQXtoVpzg1bzVzr=KJT_pcV=yS102CR3SJwEQ AT mail DOT gmail DOT com> <20120319173637 DOT GA7360 AT calimero DOT vinschen DOT de>
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On 3/19/2012 6:36 PM, Corinna Vinschen wrote:
> 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
>

the new 20120319 snapshot seems to have collateral effect
on dash+rebaseall

     825 [waitproc] dash 3540! proc_waiter: error on read of child wait 
pipe 0x0,
  Win32 error 6


Marco

Marco


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