1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Context.c. Python interfaces for perf script.
*
* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
*/
#include <Python.h>
#include "../../../util/trace-event.h"
#include "../../../util/event.h"
#include "../../../util/symbol.h"
#include "../../../util/thread.h"
#include "../../../util/maps.h"
#if PY_MAJOR_VERSION < 3
#define _PyCapsule_GetPointer(arg1, arg2) \
PyCObject_AsVoidPtr(arg1)
#define _PyBytes_FromStringAndSize(arg1, arg2) \
PyString_FromStringAndSize((arg1), (arg2))
PyMODINIT_FUNC initperf_trace_context(void);
#else
#define _PyCapsule_GetPointer(arg1, arg2) \
PyCapsule_GetPointer((arg1), (arg2))
#define _PyBytes_FromStringAndSize(arg1, arg2) \
PyBytes_FromStringAndSize((arg1), (arg2))
PyMODINIT_FUNC PyInit_perf_trace_context(void);
#endif
static struct scripting_context *get_scripting_context(PyObject *args)
{
PyObject *context;
if (!PyArg_ParseTuple(args, "O", &context))
return NULL;
return _PyCapsule_GetPointer(context, NULL);
}
static PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args)
{
struct scripting_context *c = get_scripting_context(args);
if (!c)
return NULL;
return Py_BuildValue("i", common_pc(c));
}
static PyObject *perf_trace_context_common_flags(PyObject *obj,
PyObject *args)
{
struct scripting_context *c = get_scripting_context(args);
if (!c)
return NULL;
return Py_BuildValue("i", common_flags(c));
}
static PyObject *perf_trace_context_common_lock_depth(PyObject *obj,
PyObject *args)
{
struct scripting_context *c = get_scripting_context(args);
if (!c)
return NULL;
return Py_BuildValue("i", common_lock_depth(c));
}
static PyObject *perf_sample_insn(PyObject *obj, PyObject *args)
{
struct scripting_context *c = get_scripting_context(args);
if (!c)
return NULL;
if (c->sample->ip && !c->sample->insn_len &&
c->al->thread->maps && c->al->thread->maps->machine)
script_fetch_insn(c->sample, c->al->thread, c->al->thread->maps->machine);
if (!c->sample->insn_len)
Py_RETURN_NONE; /* N.B. This is a return statement */
return _PyBytes_FromStringAndSize(c->sample->insn, c->sample->insn_len);
}
static PyMethodDef ContextMethods[] = {
{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
"Get the common preempt count event field value."},
{ "common_flags", perf_trace_context_common_flags, METH_VARARGS,
"Get the common flags event field value."},
{ "common_lock_depth", perf_trace_context_common_lock_depth,
METH_VARARGS, "Get the common lock depth event field value."},
{ "perf_sample_insn", perf_sample_insn,
METH_VARARGS, "Get the machine code instruction."},
{ NULL, NULL, 0, NULL}
};
#if PY_MAJOR_VERSION < 3
PyMODINIT_FUNC initperf_trace_context(void)
{
(void) Py_InitModule("perf_trace_context", ContextMethods);
}
#else
PyMODINIT_FUNC PyInit_perf_trace_context(void)
{
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
"perf_trace_context", /* m_name */
"", /* m_doc */
-1, /* m_size */
ContextMethods, /* m_methods */
NULL, /* m_reload */
NULL, /* m_traverse */
NULL, /* m_clear */
NULL, /* m_free */
};
PyObject *mod;
mod = PyModule_Create(&moduledef);
/* Add perf_script_context to the module so it can be imported */
PyObject_SetAttrString(mod, "perf_script_context", Py_None);
return mod;
}
#endif
|
