Hello and really thanks for the answer, I found the solution for the problem also thanks to the gdb debugger. My problem was a SegmentationFault runtime error due to a little tricky:
the function SPGIST_FUNCTION(pquad_equals_op) is defined as follows
#define SPGIST_FUNCTION(name) extern "C" Datum name(PG_FUNCTION_ARGS)
extern "C" {
PG_FUNCTION_INFO_V1(pquad_consistent);
PG_FUNCTION_INFO_V1(pquad_nn_consistent);
PG_FUNCTION_INFO_V1(pquad_penalty);
PG_FUNCTION_INFO_V1(pquad_checkinternalsplit);
PG_FUNCTION_INFO_V1(pquad_picksplit);
PG_FUNCTION_INFO_V1(pquad_childbp);
PG_FUNCTION_INFO_V1(pquad_keylen);
PG_FUNCTION_INFO_V1(pquad_check);
PG_FUNCTION_INFO_V1(pquad_printpred);
PG_FUNCTION_INFO_V1(pquad_getpred);
PG_FUNCTION_INFO_V1(pquad_getparam);
PG_FUNCTION_INFO_V1(pquad_inside_op);
PG_FUNCTION_INFO_V1(pquad_check_chaining);
}
but as you can see, this "C" lacks the row
PG_FUNCTION_INFO_V1(pquad_equals_op);
that's why it was not working... I didn't noticed it because as far as I don't access any pointer's argument
, I don't get any error back! (I really don't know why, is it maybe because of some default setting?)
Anyway thanks again to all!
Simone
On 12/04/2008, Tom Lane <tgl@sss.pgh.pa.us> wrote: "Simone Campora" <simone.campora@gmail.com> writes:
> I first want to implement it and to make it works, like this:
> SPGIST_FUNCTION(pquad_equals_op)
> {
> elog (NOTICE, "1");
> Point *p1 = (Point *)PG_GETARG_POINTER(0);
> Point *p2 = (Point *)PG_GETARG_POINTER(1);
> elog (NOTICE, "2");
(1) are you sure this function is marked as being V1 calling convention?
Maybe "SPGIST_FUNCTION" takes care of that for you but I don't know.
(2) since you neither marked it STRICT nor defended against nulls in the
function body, I'd fully expect a crash on a null input ... does that
table contain any null points?
> Could anyone suggest me a good runtime debugger for that purpose?
Any C debugger should work fine. gdb and ddd are the most common
tools around this project, I think.
regards, tom lane
--
Campora Simone,
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