Re: [Daqpp-forum] vmedaq analysis on 64bit ...

[Matej <mat...@ij...>]

I have just realised that the problem lies in using unsigned long when=20
writing/reading data. On 32bit sizeof(int)=3Dsizeof(unsigned=20
int)=3Dsizeof(long)=3Dsizeof(unsigned long) whereas on 64 bit=20
sizeof(int)=3Dsizeof(unsigned int) but sizeof(unsigned long) is twice the=20
sizeof(unsigned int).

Would find/replace script converting "unsigned long" to "unsigned int" on=20
vmedaq/ folder (recursively) solve the problem?

Best, etc
Matej


On Monday 12 February 2007 09:10:24 Matej Bati=C4=8D wrote:
> I have tried to compile vmedaq on 64bit machine and it fails...
>
> The problem lies in (output from make command)
>
> make[3]: Entering directory `/opt/brachy/daqpp-cvs/vmedaq/gui'
> RunMenu.cc: In function =E2=80=98gboolean do_send_command(Runmenu*)=E2=80=
=99:
> RunMenu.cc:32: error: cast from =E2=80=98void*=E2=80=99 to =E2=80=98int=
=E2=80=99 loses precision
>
> make[3]: Entering directory `/opt/brachy/daqpp-cvs/vmedaq/modules'
> MyModuleGuiConfig.cc: In static member function 'static void
> MyModuleGuiConfig::onBtnToggled(GtkWidget*, MyModuleGuiConfig*)':
> MyModuleGuiConfig.cc:269: error: cast from 'void*' to 'int' loses precisi=
on
> MyModuleGuiConfig.cc:270: error: cast from 'void*' to 'int' loses precisi=
on
> MyModuleGuiConfig.cc: In static member function 'static void
> MyModuleGuiConfig::onTxtChanged(GtkWidget*, MyModuleGuiConfig*)':
> MyModuleGuiConfig.cc:345: error: cast from 'void*' to 'int' loses precisi=
on
>
>
> These errors are solved with casting to long instead of int:
> //mat...@ij...
> //int thing =3D (int)ptr_to_sth;
> long thing =3D (long)ptr_to_sth;
>
> So, compiled code seems to work somehow. But simple observer class with
> only DataRecord implemented, where some variable is increased on each new
> data record (so data counting observer) tells me that there are exactly
> 5000 data records in the file with 10000 data records. The is to be
> expected, since on 32bit machine:
> size of int  =3D 4
> size of long =3D 4
>
> but on 64bit:
> size of int  =3D 4
> size of long =3D 8
>
> I expect that everything would work if the data were taken on 64bit machi=
ne
> and then analyzed on 64bit as well, but I have 32bit machine in my setup,
> but I would like to use (brand new and very fast :-) ) 4-processor 64bit
> computer for analysis. I also would not like to use 32bit precompiled
> binaries on 64bit, since I use shared libraries (ROOT mostly).
>
> So, any suggestion will be highly appreciated and forever praised :-)
>
> Best, etc,
> Matej
>
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