[Nexus-developers] Yet another memory leak!

[POIRIER Stephane]

Hi,

[Before sending this e-mail I've tried to report the issue using the dedicated web page (http://trac.nexusformat.org/code/) but the login dialog has rejected my NeXus wiki user name & password.]

So this memory leak comes with the NXgetgroupID function. Calling it in the inner loop of the leak_test2.cxx (near line 37) and allow debug output in napi5.cpp show that for each call to NXgetgroupID a HDF5 datatype object is never freed:

file 0
HDF5 object count before close: 1
HDF5 object count after close: 100
HDF5 dataset count after close: 0
HDF5 group count after close: 0
HDF5 datatype count after close: 100
HDF5 attribute count after close: 0
file 1
HDF5 object count before close: 1
HDF5 object count after close: 200
HDF5 dataset count after close: 0
HDF5 group count after close: 0
HDF5 datatype count after close: 200
HDF5 attribute count after close: 0
file 2
HDF5 object count before close: 1
HDF5 object count after close: 300
HDF5 dataset count after close: 0
HDF5 group count after close: 0
HDF5 datatype count after close: 300
HDF5 attribute count after close: 0
file3
...

The technical environment is unchanged:
- NeXus API 3.0.0 (with memory leaks fixed for time_buffer allocation and H5Pcreate() calling in NX5Open function)
- OS Linux RHEL4
- gcc 3.4.4

Thanks for your attention.


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Stéphane POIRIER
Groupe Gestion des données
Tél. : 01 69 35 93 38
SYNCHROTRON SOLEIL
Bâtiment Central pièce A1.0.28
L'Orme des Merisiers
Saint-Aubin - BP 48
91192 GIF-SUR-YVETTE CEDEX
Site Web: <http://www.synchrotron-soleil.fr/>
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