blob: 3970803d412f7cab12abd12279786e4ff30a6cb3 [file] [log] [blame]
// tracecmd.i
%module ctracecmd
%include "typemaps.i"
%include "constraints.i"
%nodefaultctor record;
%nodefaultdtor record;
%apply Pointer NONNULL { struct tracecmd_input *handle };
%apply Pointer NONNULL { struct pevent *pevent };
%apply Pointer NONNULL { struct format_field * };
%apply unsigned long long *OUTPUT {unsigned long long *}
%apply int *OUTPUT {int *}
%{
#include "trace-cmd.h"
%}
%typemap(in) PyObject *pyfunc {
if (!PyCallable_Check($input)) {
PyErr_SetString(PyExc_TypeError, "Need a callable object!");
return NULL;
}
$1 = $input;
}
%ignore python_callback;
%inline %{
static int python_callback(struct trace_seq *s,
struct pevent_record *record,
struct event_format *event,
void *context);
PyObject *convert_pevent(unsigned long pevent)
{
void *pev = (void *)pevent;
return SWIG_NewPointerObj(SWIG_as_voidptr(pev), SWIGTYPE_p_pevent, 0);
}
void py_pevent_register_event_handler(struct pevent *pevent, int id,
char *subsys, char *evname,
PyObject *pyfunc)
{
Py_INCREF(pyfunc);
pevent_register_event_handler(pevent, id, subsys, evname,
python_callback, pyfunc);
}
static PyObject *py_field_get_data(struct format_field *f, struct pevent_record *r)
{
if (!strncmp(f->type, "__data_loc ", 11)) {
unsigned long long val;
int len, offset;
if (pevent_read_number_field(f, r->data, &val)) {
PyErr_SetString(PyExc_TypeError,
"Field is not a valid number");
return NULL;
}
/*
* The actual length of the dynamic array is stored
* in the top half of the field, and the offset
* is in the bottom half of the 32 bit field.
*/
offset = val & 0xffff;
len = val >> 16;
return PyBuffer_FromMemory((char *)r->data + offset, len);
}
return PyBuffer_FromMemory((char *)r->data + f->offset, f->size);
}
static PyObject *py_field_get_str(struct format_field *f, struct pevent_record *r)
{
if (!strncmp(f->type, "__data_loc ", 11)) {
unsigned long long val;
int offset;
if (pevent_read_number_field(f, r->data, &val)) {
PyErr_SetString(PyExc_TypeError,
"Field is not a valid number");
return NULL;
}
/*
* The actual length of the dynamic array is stored
* in the top half of the field, and the offset
* is in the bottom half of the 32 bit field.
*/
offset = val & 0xffff;
return PyString_FromString((char *)r->data + offset);
}
return PyString_FromStringAndSize((char *)r->data + f->offset,
strnlen((char *)r->data + f->offset, f->size));
}
static PyObject *py_format_get_keys(struct event_format *ef)
{
PyObject *list;
struct format_field *f;
list = PyList_New(0);
for (f = ef->format.fields; f; f = f->next) {
if (PyList_Append(list, PyString_FromString(f->name))) {
Py_DECREF(list);
return NULL;
}
}
return list;
}
%}
%wrapper %{
static int python_callback(struct trace_seq *s,
struct pevent_record *record,
struct event_format *event,
void *context)
{
PyObject *arglist, *result;
int r = 0;
record->ref_count++;
arglist = Py_BuildValue("(OOO)",
SWIG_NewPointerObj(SWIG_as_voidptr(s),
SWIGTYPE_p_trace_seq, 0),
SWIG_NewPointerObj(SWIG_as_voidptr(record),
SWIGTYPE_p_pevent_record, 0),
SWIG_NewPointerObj(SWIG_as_voidptr(event),
SWIGTYPE_p_event_format, 0));
result = PyEval_CallObject(context, arglist);
Py_XDECREF(arglist);
if (result && result != Py_None) {
if (!PyInt_Check(result)) {
PyErr_SetString(PyExc_TypeError,
"callback must return int");
PyErr_Print();
Py_XDECREF(result);
return 0;
}
r = PyInt_AS_LONG(result);
} else if (result == Py_None)
r = 0;
else
PyErr_Print();
Py_XDECREF(result);
return r;
}
%}
%ignore trace_seq_vprintf;
%ignore vpr_stat;
/* SWIG can't grok these, define them to nothing */
#define __trace
#define __attribute__(x)
#define __thread
%include "trace-cmd.h"
%include "event-parse.h"