Hello Victor Stinner.
Thanks.
Your tip helped me a lot.
I understood that I need to get position on bycode of the line.
So I create the funcion to get position inside of the bycode.
Now I can to jump the correct position on trace.
frame->f_lasti = checkBycodePosition(frame->f_code, 11);
int checkBycodePosition(PyCodeObject *co, int fline)
{
Py_ssize_t size = PyBytes_Size(co->co_lnotab) / 2;
unsigned char *p = (unsigned char *)PyBytes_AsString(co->co_lnotab);
int line = co->co_firstlineno;
int addr = 0;
while (--size >= 0)
{
addr += *p++;
line += (signed char)*p;
if (line == fline)
break;
p++;
}
return addr;
}
Att.
Leandro Müller
________________________________
De: Leandro Müller <[email protected]>
Enviado: segunda-feira, 23 de março de 2020 13:45
Para: Victor Stinner <[email protected]>
Cc: [email protected] <[email protected]>
Assunto: [Python-Dev] Re: Jump on C by PyEval_SetTrace Python 3.7.7
Hi.
When I changed frame->f_lasti change de code to back, it's work but the line in
front code occurs dump, the runtime over.
Example:
I jump to 8 line and after I jump to line 10, it occurs dump.
On python trace pdb the jump works good by the frame-f_lineno.
Att.
Leandro Müller
________________________________
De: Victor Stinner <[email protected]>
Enviado: segunda-feira, 23 de março de 2020 13:01
Para: Leandro Müller <[email protected]>
Cc: [email protected] <[email protected]>
Assunto: Re: [Python-Dev] Jump on C by PyEval_SetTrace Python 3.7.7
Hi,
It seems like you should be to modify frame->f_lasti in a trace function
FYI in a frame object, the line number is computed using
frame->f_lasti and f->f_code->co_lnotab: PyFrame_GetLineNumber().
See: https://github.com/python/cpython/blob/master/Objects/lnotab_notes.txt
Good luck ;-)
Victor
Le lun. 23 mars 2020 à 00:50, Leandro Müller
<[email protected]> a écrit :
>
> Hi everyone.
>
> I'm trying to make a simple jump on C funcion trace by frame->f_lineno.
> Example is simple, but not working.
>
>
> if (frame->f_lineno == 12){
>
> frame->f_lineno = 8;
>
> }
>
> attached files C and python to run test.
> the line 12 I need to jump to line 8.
>
>
>
> Att.
>
> Leandro Müller
>
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