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perf scripts python: Pass event/thread/dso name and symbol info to event handler in python

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Also as suggested by Arnaldo, pack all these parameters to a dictionary,
which is more expandable for adding new parameters while keeping the
compatibility for old scripts.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1344419875-21665-4-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Feng Tang 2012-08-08 17:57:53 +08:00 committed by Arnaldo Carvalho de Melo
parent 73994dc158
commit fd6b858a1e
1 changed files with 29 additions and 6 deletions
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35
tools/perf/util/scripting-engines/trace-event-python.c
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@ -345,15 +345,23 @@ static void python_process_general_event(union perf_event *perf_event __unused,
struct machine *machine __unused,
struct addr_location *al __unused)
{
PyObject *handler, *retval, *t;
PyObject *handler, *retval, *t, *dict;
static char handler_name[64];
unsigned n = 0;
void *data = sample->raw_data;
struct thread *thread = al->thread;
/*
* Use the MAX_FIELDS to make the function expandable, though
* currently there is only one itme for the tuple.
*/
t = PyTuple_New(MAX_FIELDS);
if (!t)
Py_FatalError("couldn't create Python tuple");
dict = PyDict_New();
if (!dict)
Py_FatalError("couldn't create Python dictionary");
snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
handler = PyDict_GetItemString(main_dict, handler_name);
@ -362,11 +370,25 @@ static void python_process_general_event(union perf_event *perf_event __unused,
goto exit;
}
/* Pass 4 parameters: event_attr, perf_sample, raw data, thread name */
PyTuple_SetItem(t, n++, PyString_FromStringAndSize((void *)&evsel->attr, sizeof(evsel->attr)));
PyTuple_SetItem(t, n++, PyString_FromStringAndSize((void *)sample, sizeof(*sample)));
PyTuple_SetItem(t, n++, PyString_FromStringAndSize(data, sample->raw_size));
PyDict_SetItemString(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
PyDict_SetItemString(dict, "attr", PyString_FromStringAndSize(
(const char *)&evsel->attr, sizeof(evsel->attr)));
PyDict_SetItemString(dict, "sample", PyString_FromStringAndSize(
(const char *)sample, sizeof(*sample)));
PyDict_SetItemString(dict, "raw_buf", PyString_FromStringAndSize(
(const char *)sample->raw_data, sample->raw_size));
PyDict_SetItemString(dict, "comm",
PyString_FromString(thread->comm));
if (al->map) {
PyDict_SetItemString(dict, "dso",
PyString_FromString(al->map->dso->name));
}
if (al->sym) {
PyDict_SetItemString(dict, "symbol",
PyString_FromString(al->sym->name));
}
PyTuple_SetItem(t, n++, dict);
if (_PyTuple_Resize(&t, n) == -1)
Py_FatalError("error resizing Python tuple");
@ -374,6 +396,7 @@ static void python_process_general_event(union perf_event *perf_event __unused,
if (retval == NULL)
handler_call_die(handler_name);
exit:
Py_DECREF(dict);
Py_DECREF(t);
}