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[FIXED] Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17671]

Thu, 18 December 2014 15:27

MartinJGaluska
Messages: 203
Registered: March 2010
Location: Germany

first-grade participant

From: *physik.uni-giessen.de

Hello all,

while looking for memory leaks in my own code, I have possibly found memory leaks in the above two classes (actually in some more):

From PndSttHitProducerRealFull.cxx ( https://subversion.gsi.de/trac/fairroot/browser/pandaroot/trunk/stt/PndS ttHitProducerRealFull.cxx) lines 86-87:

  PndSttMapCreator *mapper = new PndSttMapCreator(fSttParameters);
  fTubeArray = mapper->FillTubeArray();

I have not found any

delete mapper;

and I am wondering if this is done intentionally in that way for some reason which I don't know about or whether this is a bug.

Would that also be correct?

  PndSttMapCreator mapper(fSttParameters);
  fTubeArray = mapper.FillTubeArray();

Kind regards,
Martin

[Updated on: Fri, 19 December 2014 21:53] by Moderator

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17675 is a reply to message #17671]

Thu, 18 December 2014 17:26

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *to.infn.it

Has valgrind reported about such line?

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17676 is a reply to message #17671]

Thu, 18 December 2014 18:34

Lia Lavezzi
Messages: 291
Registered: May 2007
Location: Torino

first-grade participant

From: *to.infn.it

Hi Martin,
I probably forgot the delete, but the mapper is created with the new in the Init() so only once per run. I will fix it tomorrow.
Ciao,
Lia.

On 19 dec: Done, changed *mapper to mapper everywhere (I hope!).

[Updated on: Fri, 19 December 2014 09:37]

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17677 is a reply to message #17676]

Thu, 18 December 2014 19:17

MartinJGaluska
Messages: 203
Registered: March 2010
Location: Germany

first-grade participant

From: *physik.uni-giessen.de

Thank you, I was not sure if it was by intention or not.

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17678 is a reply to message #17675]

Thu, 18 December 2014 19:19

MartinJGaluska
Messages: 203
Registered: March 2010
Location: Germany

first-grade participant

From: *physik.uni-giessen.de

StefanoSpataro wrote on Thu, 18 December 2014 17:26

Has valgrind reported about such line?

No, I know that I have a memory leak in my code, so I was going through my code line by line. I found a line that looked like a bug to me and compared it to how others have implemented similar pieces of code. That is how I found the above line. I don't yet know how to use valgrind, but will look into how to use it.

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17680 is a reply to message #17678]

Thu, 18 December 2014 21:26

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *ip70.fastwebnet.it

valgrind --leak-check=full --suppressions=/home/spataro/apr13/tools/root/etc/valgrind-root.supp root.exe -q -l reco_complete.C

where /home/spataro/apr13/ is where you have the source code of your external packages, and reco_complete.C is your macro. Run few events, you don't need many to see all the leaks.

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Re: Memory leak in PndSttHitProducerRealFull / PndFtsHitProducerRealFull? [message #17686 is a reply to message #17680]

Fri, 19 December 2014 14:52

MartinJGaluska
Messages: 203
Registered: March 2010
Location: Germany

first-grade participant

From: *physik.uni-giessen.de

Thank you. After having removed one crash connected to TClonesArrays, I have tested with 10 events writing debugging output and 200 events without debugging info. Both tests passed fine.

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