Here we add the following methods to the Python type for synthetic events:
register()
unregister()
The constructor only creates the objects that describe the new synthetic
event. We need to use those new APIs in order to actually create/destroy
the event into the system.
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
src/ftracepy-utils.c | 42 +++++++++++++++++++++++++++++++++++++-----
src/ftracepy-utils.h | 4 ++++
src/ftracepy.c | 10 ++++++++++
3 files changed, 51 insertions(+), 5 deletions(-)
diff --git a/src/ftracepy-utils.c b/src/ftracepy-utils.c
index 9245b07..244bff9 100644
--- a/src/ftracepy-utils.c
+++ b/src/ftracepy-utils.c
@@ -1154,17 +1154,49 @@ PyObject *PySynthEvent_add_delta_T(PySynthEvent *self, PyObject *args,
Py_RETURN_NONE;
}
-PyObject *PyFtrace_dir(PyObject *self)
-{
- return PyUnicode_FromString(tracefs_tracing_dir());
-}
-
static void set_destroy_flag(PyObject *py_obj, bool val)
{
PyFtrace_Object_HEAD *obj_head = (PyFtrace_Object_HEAD *)py_obj;
obj_head->destroy = val;
}
+PyObject *PySynthEvent_register(PySynthEvent *self)
+{
+ if (tracefs_synth_create(self->ptrObj) < 0) {
+ TfsError_fmt(NULL, "Failed to register synth. event %s",
+ tracefs_synth_get_name(self->ptrObj));
+ return NULL;
+ }
+
+ /*
+ * Here the synthetic event gets added to the system.
+ * Hence we need to 'destroy' this event at exit.
+ */
+ set_destroy_flag((PyObject *)self, true);
+ Py_RETURN_NONE;
+}
+
+PyObject *PySynthEvent_unregister(PySynthEvent *self)
+{
+ if (tracefs_synth_destroy(self->ptrObj) < 0) {
+ TfsError_fmt(NULL, "Failed to unregister synth. event %s",
+ tracefs_synth_get_name(self->ptrObj));
+ return NULL;
+ }
+
+ /*
+ * Here the synthetic event gets removed from the system.
+ * Hence we no loger need to 'destroy' this event at exit.
+ */
+ set_destroy_flag((PyObject *)self, false);
+ Py_RETURN_NONE;
+}
+
+PyObject *PyFtrace_dir(PyObject *self)
+{
+ return PyUnicode_FromString(tracefs_tracing_dir());
+}
+
static PyObject *set_destroy(PyObject *args, PyObject *kwargs, bool destroy)
{
static char *kwlist[] = {"object", NULL};
diff --git a/src/ftracepy-utils.h b/src/ftracepy-utils.h
index 7b798fc..40b41d8 100644
--- a/src/ftracepy-utils.h
+++ b/src/ftracepy-utils.h
@@ -139,6 +139,10 @@ PyObject *PySynthEvent_add_delta_T(PySynthEvent *self, PyObject *args,
PyObject *PySynthEvent_add_sum(PySynthEvent *self, PyObject *args,
PyObject *kwargs);
+PyObject *PySynthEvent_register(PySynthEvent *self);
+
+PyObject *PySynthEvent_unregister(PySynthEvent *self);
+
PyObject *PyFtrace_dir(PyObject *self);
PyObject *PyFtrace_detach(PyObject *self, PyObject *args, PyObject *kwargs);
diff --git a/src/ftracepy.c b/src/ftracepy.c
index 066fc65..0314aa1 100644
--- a/src/ftracepy.c
+++ b/src/ftracepy.c
@@ -252,6 +252,16 @@ static PyMethodDef PySynthEvent_methods[] = {
METH_VARARGS | METH_KEYWORDS,
"Add 'start + end' field."
},
+ {"register",
+ (PyCFunction) PySynthEvent_register,
+ METH_NOARGS,
+ "Register synth. event to a trace instance."
+ },
+ {"unregister",
+ (PyCFunction) PySynthEvent_unregister,
+ METH_NOARGS,
+ "Unregister synth. event from a trace instance."
+ },
{NULL, NULL, 0, NULL}
};
--
2.32.0
|