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Context.c
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1 /*
2  * Context.c. Python interfaces for perf script.
3  *
4  * Copyright (C) 2010 Tom Zanussi <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #include <Python.h>
23 #include "../../../perf.h"
24 #include "../../../util/trace-event.h"
25 
26 PyMODINIT_FUNC initperf_trace_context(void);
27 
28 static PyObject *perf_trace_context_common_pc(PyObject *self, PyObject *args)
29 {
30  static struct scripting_context *scripting_context;
31  PyObject *context;
32  int retval;
33 
34  if (!PyArg_ParseTuple(args, "O", &context))
35  return NULL;
36 
37  scripting_context = PyCObject_AsVoidPtr(context);
38  retval = common_pc(scripting_context);
39 
40  return Py_BuildValue("i", retval);
41 }
42 
43 static PyObject *perf_trace_context_common_flags(PyObject *self,
44  PyObject *args)
45 {
46  static struct scripting_context *scripting_context;
47  PyObject *context;
48  int retval;
49 
50  if (!PyArg_ParseTuple(args, "O", &context))
51  return NULL;
52 
53  scripting_context = PyCObject_AsVoidPtr(context);
54  retval = common_flags(scripting_context);
55 
56  return Py_BuildValue("i", retval);
57 }
58 
59 static PyObject *perf_trace_context_common_lock_depth(PyObject *self,
60  PyObject *args)
61 {
62  static struct scripting_context *scripting_context;
63  PyObject *context;
64  int retval;
65 
66  if (!PyArg_ParseTuple(args, "O", &context))
67  return NULL;
68 
69  scripting_context = PyCObject_AsVoidPtr(context);
70  retval = common_lock_depth(scripting_context);
71 
72  return Py_BuildValue("i", retval);
73 }
74 
75 static PyMethodDef ContextMethods[] = {
76  { "common_pc", perf_trace_context_common_pc, METH_VARARGS,
77  "Get the common preempt count event field value."},
78  { "common_flags", perf_trace_context_common_flags, METH_VARARGS,
79  "Get the common flags event field value."},
80  { "common_lock_depth", perf_trace_context_common_lock_depth,
81  METH_VARARGS, "Get the common lock depth event field value."},
82  { NULL, NULL, 0, NULL}
83 };
84 
85 PyMODINIT_FUNC initperf_trace_context(void)
86 {
87  (void) Py_InitModule("perf_trace_context", ContextMethods);
88 }