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

Source file repositories/reference/linux-study-clean/tools/perf/scripts/python/Perf-Trace-Util/Context.c

File Facts

System
Linux kernel
Corpus path
tools/perf/scripts/python/Perf-Trace-Util/Context.c
Extension
.c
Size
5832 bytes
Lines
226
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Context.c.  Python interfaces for perf script.
 *
 * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
 */

/*
 * Use Py_ssize_t for '#' formats to avoid DeprecationWarning: PY_SSIZE_T_CLEAN
 * will be required for '#' formats.
 */
#define PY_SSIZE_T_CLEAN

#include <Python.h>
#include "../../../util/config.h"
#include "../../../util/trace-event.h"
#include "../../../util/event.h"
#include "../../../util/symbol.h"
#include "../../../util/thread.h"
#include "../../../util/map.h"
#include "../../../util/maps.h"
#include "../../../util/auxtrace.h"
#include "../../../util/session.h"
#include "../../../util/srcline.h"
#include "../../../util/srccode.h"

#define _PyCapsule_GetPointer(arg1, arg2) \
  PyCapsule_GetPointer((arg1), (arg2))
#define _PyBytes_FromStringAndSize(arg1, arg2) \
  PyBytes_FromStringAndSize((arg1), (arg2))
#define _PyUnicode_AsUTF8(arg) \
  PyUnicode_AsUTF8(arg)

PyMODINIT_FUNC PyInit_perf_trace_context(void);

static struct scripting_context *get_args(PyObject *args, const char *name, PyObject **arg2)
{
	int cnt = 1 + !!arg2;
	PyObject *context;

	if (!PyArg_UnpackTuple(args, name, 1, cnt, &context, arg2))
		return NULL;

	return _PyCapsule_GetPointer(context, NULL);
}

static struct scripting_context *get_scripting_context(PyObject *args)
{
	return get_args(args, "context", NULL);
}

#ifdef HAVE_LIBTRACEEVENT
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));
}
#endif

static PyObject *perf_sample_insn(PyObject *obj, PyObject *args)
{
	struct scripting_context *c = get_scripting_context(args);

	if (!c)

Annotation

Implementation Notes