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/
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