Hi, As correctly reported by the error message, you must run with rootn.exe instead of root/root.exe when using the shared memory class TMapFile. If you get an error when running with rootn.exe, please send the traceback as explained at: http://root.cern.ch/root/roottalk/RoottalkRules.html Rene Brun Jianglai Liu wrote: > > Dear ROOTers, > > I am having problems to run TMapfile produers. In the attachment you could > find an example producer code that I am struggling with. > > I have a locally-compiled ROOT3.05-07 with gcc3.2.3, which I simple > configured as "linux" during compilation. Everything went through and > looks like I've got all the libraries and bins. (Yes, libNew.so was > made.) Then I compiled the producer with the root libraries (see the > attached Makefile), with -lNew options. The executable was made OK. > > But when I tried to run the producer, I've got the error messages like: > > Error in <TMapFile::TMapFile>: no memory mapped file capability available > Use rootn.exe or link application against "-lNew" > > If I tried to run the code in rootn.exe CINT. It doesn't complain about > the TMapFile. But when if I try to break it with ctrl-c, it crashed > horribly with errors like: > > *** Break *** segmentation violation > Generating stack trace... > BFD: Dwarf Error: Invalid or unhandled FORM value: 14. > BFD: Dwarf Error: Invalid or unhandled FORM value: 14. > BFD: Dwarf Error: Invalid or unhandled FORM value: 14. > ... > > On the other hand if I tried the same thing on my laptop (standard > RH9/gcc3.2.2/ROOT3.05-07), everything is fine. Could there be any > incompatibility between root and gcc3.2.3? > > The gcc3.2.3 I used is from our computer center server, which is a RH7.3 > with all kinds of patches. So it could be that some other libraries were > missing when ROOT got compiled. If you need more details about this > specific ROOT compilation I will pipe it. > > Thanks very much! > > Jianglai > > > > -------------------------------------------------------------------------------- > Name: map_trouble.txt > map_trouble.txt Type: Plain Text (TEXT/PLAIN) > Encoding: BASE64
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