Thanks Bill.
Depends.exe gave me the clue on the procedure name. I picked up the "name"
from the lib file assuming that would be the mangled name.
Next problem:
C code is as follows:
opt* set = 0;
int setlen = 0;
setlen = mo_builtin_settings (&set);
My translation is as follows:
init =: verb define
s =: 0
l =: settings <(iad 's')
)
When executed, J crashes!!
The instruction at "0x010d2a40" referenced memory at "0x00000069". The
memory could not be "written"
How to send the memory location that is "writable"?
Thanks,
Yuva
On Fri, Feb 15, 2008 at 4:23 PM, bill lam <[EMAIL PROTECTED]> wrote:
> cd does not know anything about the actual protocol of the api function
> being
> called. It only check if arguments passed to it agree with the signiture.
>
> (procedure not found) means the dll is found but the named function is not
> inside the dll so that you have to find what is the real mangled name
> using eg.
> depend.exe
>
>
> Yuvaraj Athur Raghuvir wrote:
> > Hello,
> >
> > I have been cracking my head on the cd errors. Any help will be
> > appreciated!!
> >
> > Context: I want to create a J interop code to MonetDB [1]. I have a
> simple C
> > code running that uses MonetDB in the embedded mode. I want to port that
> to
> > J.
> >
> > OS : Win XP / 32
> >
> > To port:
> > typedef struct opt {
> > opt_kind kind;
> > char *name;
> > char *value;
> > } opt;
> > __declspec(dllimport) int mo_builtin_settings(opt **Set);
> >
> >
> > My J port:
> > symget=: 15!:6
> >
> > symdat=: 3 : 0 NB. symdat symget <'name'
> > had=. {.memr y,(IF64{4 8),1,JPTR
> > had+{.memr had,0,1,JPTR
> > )
> >
> > iad=: [EMAIL PROTECTED]@boxopen
> >
> >
> > MUTIL =: '"E:\08.utils\monetdb\monetdb01\monetdb01\lib\libmutils.dll"'
> > cdu =: 1 : '(MUTIL,m)&cd'
> > settings =: '_mo_builtin_settings > i i' cdu
> >
> > init =: verb define
> > s =: 0
> > l =: settings <(iad 's')
> > )
> >
> > Observations:
> > 1) With the above definition, I get cder 2 0
> > init ''
> > |domain error: cd
> > | l=: settings<(iad's')
> > cder ''
> > 2 0
> >
> > 2) Just to check if the procedure is getting discovered, I did this:
> > settings =: '_mo_builtin_settings > i l' cdu
> >
> > init ''
> > |domain error: cd
> > | l=: settings<(iad's')
> > cder ''
> > 5 1
> >
> >>From this I infer that :
> > 2a) method is found in the library
> > 2b) the declaration of second parameter is wrong.
> >
> > Q: Why do I get a 2 0 (procedure not found) error in this case? As far
> as I
> > can see J is able to tell me that the declaration is invalid that tells
> me
> > that the procedure name resolution is ok.
> >
> > Q: Will I get a 2 0 error on execution of the method due to other
> internally
> > called methods? If so, how can I discover the missing libraries that can
> > help in the execution?
> >
> > Note: My C code in VC++ 2005 Express Edition works fine!
> >
> > Thanks,
> > Yuva
> >
> >
> > [1] http://www.monetdb.nl/
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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