Linux Perf
Context.c
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1 /*
2  * Context.c. Python interfaces for perf script.
3  *
4  * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
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 #if PY_MAJOR_VERSION < 3
27 #define _PyCapsule_GetPointer(arg1, arg2) \
28  PyCObject_AsVoidPtr(arg1)
29 
30 PyMODINIT_FUNC initperf_trace_context(void);
31 #else
32 #define _PyCapsule_GetPointer(arg1, arg2) \
33  PyCapsule_GetPointer((arg1), (arg2))
34 
35 PyMODINIT_FUNC PyInit_perf_trace_context(void);
36 #endif
37 
38 static PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args)
39 {
40  static struct scripting_context *scripting_context;
41  PyObject *context;
42  int retval;
43 
44  if (!PyArg_ParseTuple(args, "O", &context))
45  return NULL;
46 
47  scripting_context = _PyCapsule_GetPointer(context, NULL);
48  retval = common_pc(scripting_context);
49 
50  return Py_BuildValue("i", retval);
51 }
52 
53 static PyObject *perf_trace_context_common_flags(PyObject *obj,
54  PyObject *args)
55 {
56  static struct scripting_context *scripting_context;
57  PyObject *context;
58  int retval;
59 
60  if (!PyArg_ParseTuple(args, "O", &context))
61  return NULL;
62 
63  scripting_context = _PyCapsule_GetPointer(context, NULL);
64  retval = common_flags(scripting_context);
65 
66  return Py_BuildValue("i", retval);
67 }
68 
69 static PyObject *perf_trace_context_common_lock_depth(PyObject *obj,
70  PyObject *args)
71 {
72  static struct scripting_context *scripting_context;
73  PyObject *context;
74  int retval;
75 
76  if (!PyArg_ParseTuple(args, "O", &context))
77  return NULL;
78 
79  scripting_context = _PyCapsule_GetPointer(context, NULL);
80  retval = common_lock_depth(scripting_context);
81 
82  return Py_BuildValue("i", retval);
83 }
84 
85 static PyMethodDef ContextMethods[] = {
86  { "common_pc", perf_trace_context_common_pc, METH_VARARGS,
87  "Get the common preempt count event field value."},
88  { "common_flags", perf_trace_context_common_flags, METH_VARARGS,
89  "Get the common flags event field value."},
90  { "common_lock_depth", perf_trace_context_common_lock_depth,
91  METH_VARARGS, "Get the common lock depth event field value."},
92  { NULL, NULL, 0, NULL}
93 };
94 
95 #if PY_MAJOR_VERSION < 3
96 PyMODINIT_FUNC initperf_trace_context(void)
97 {
98  (void) Py_InitModule("perf_trace_context", ContextMethods);
99 }
100 #else
101 PyMODINIT_FUNC PyInit_perf_trace_context(void)
102 {
103  static struct PyModuleDef moduledef = {
104  PyModuleDef_HEAD_INIT,
105  "perf_trace_context", /* m_name */
106  "", /* m_doc */
107  -1, /* m_size */
108  ContextMethods, /* m_methods */
109  NULL, /* m_reload */
110  NULL, /* m_traverse */
111  NULL, /* m_clear */
112  NULL, /* m_free */
113  };
114  return PyModule_Create(&moduledef);
115 }
116 #endif
common_flags
int common_flags(struct scripting_context *context)
Definition: trace-event-parse.c:68
perf_trace_context_common_flags
static PyObject * perf_trace_context_common_flags(PyObject *obj, PyObject *args)
Definition: Context.c:53
_PyCapsule_GetPointer
#define _PyCapsule_GetPointer(arg1, arg2)
Definition: Context.c:27
common_pc
int common_pc(struct scripting_context *context)
Definition: trace-event-parse.c:82
scripting_context
struct scripting_context * scripting_context
Definition: trace-event-scripting.c:32
perf_trace_context_common_pc
static PyObject * perf_trace_context_common_pc(PyObject *obj, PyObject *args)
Definition: Context.c:38
ContextMethods
static PyMethodDef ContextMethods[]
Definition: Context.c:85
perf_trace_context_common_lock_depth
static PyObject * perf_trace_context_common_lock_depth(PyObject *obj, PyObject *args)
Definition: Context.c:69
common_lock_depth
int common_lock_depth(struct scripting_context *context)
Definition: trace-event-parse.c:54
scripting_context
Definition: trace-event.h:96
initperf_trace_context
PyMODINIT_FUNC initperf_trace_context(void)
Definition: Context.c:96