Re: [f2py] COMMON BLOCK revisited

Why can't you put this all into one module?

> Hi
>
> I dug the user mailing list and found this post on COMMON BLOCKS:
>
> -------- thread message ----------------------------------------
>> Pearu,
>>
>> I have the same common blocks in different modules.  I'd like to make
>> common blocks from both modules reference the same variable.  I can't
>> seem to do it.
>
> Because it is not possible.
>> .................
> No. And it is not due to f2py limitations. Namely COMMON blocks
> are 'common' only for routines that are inside of the same executable
> (e.g. shared module). And each time a module is loaded, a memory is
> allocated for COMMON blocks and pointers inside Fortran routines (inside
> that module) point to these COMMON blocks, roughly speaking.
> If you load another module, it will have its own COMMON blocks and
> pointers in its routines will point to that.
>> ................
> Sorry, not possible :( COMMON blocks just are sticked to one executable
> and I don't see any ways how they could be shared between different
> executables.
> ------ end of thread message --------------------------------
>
> I need to wrap a f77 code which has common block declared in almost every
> subroutine. There are inputs like max dimensions of arrays in the common
> block used by every subroutine.
>
> So explicitly using assignment to pass the value to every common block in
> each subroutine is not worth it (but definitely a solution). Changing the
> code by removing the common block is one thing, but are there other ways ?
>
> Referencing a numpy variable to the variable in the COMMON BLOCK is
> impossible according to the above post. And assignment of a numpy array to
> the wrapped COMMON BLOCK array (I believe) copies the contents and does
> not
> reference (or is there a way).
>
>>> import WarppedSubroutine
>>> NumpyReal = 0.1
>>> WrappedSubroutine.CommonBlock.RealInBlock = NumpyReal
>
> I would appreciate if some one can give some hints.
>
> Regards,
>
> --
> Pavanakumar Mohanamuraly
>
>
>
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