LXR linux/tools/perf/scripts/python/Perf-Trace-Util/Context.c

   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
  26PyMODINIT_FUNC initperf_trace_context(void);
  27
  28static PyObject *perf_trace_context_common_pc(PyObject *obj, 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
  43static PyObject *perf_trace_context_common_flags(PyObject *obj,
  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
  59static PyObject *perf_trace_context_common_lock_depth(PyObject *obj,
  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
  75static 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
  85PyMODINIT_FUNC initperf_trace_context(void)
  86{
  87        (void) Py_InitModule("perf_trace_context", ContextMethods);
  88}
  89