sPHENIX tracking discussion

[Anthony Frawley <afrawley AT fsu.edu>]

Hi Chris,

Yes, that was the recommended way to get the system to give back the memory when you clear a map. It has been a while but, if I remember correctly, it did stop the problem wed were having with memory growth between events.

Looking at it, this is a map containing pointers to another map. It looks like gcc12 is complaining that the pointers to the deleted map entries are not handled correctly. I will look at it tonight.

Tony

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From: sPHENIX-tracking-l <sphenix-tracking-l-bounces AT lists.bnl.gov> on behalf of pinkenburg via sPHENIX-tracking-l <sphenix-tracking-l AT lists.bnl.gov>
Sent: Saturday, November 5, 2022 10:05 AM
To: sphenix-tracking <sphenix-tracking-l AT lists.bnl.gov>
Subject: [Sphenix-tracking-l] Reset in coresoftware/offline/packages/trackbase/TrkrClusterHitAssocv3.cc

 

Hi folks,

gcc 12 gives a warning about dangling pointers in the Reset method of
this class from the local map (thismap and empty_map). It looks like an
attempt to force the freeing of memory allocated by the map (can we test
if this actually works?), but given the compiler warning I would propose
to look for another solution.

Right now the warning will be suppressed in the configure.ac
(-Wno-dangling-pointer) to get this code through

Chris

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Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
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Brookhaven National Laboratory  ;    phone: (631) 344-5692
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