mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 04:06:46 +00:00
a76ccf3c1c
SystemTap reserved words sometimes conflict with QEMU variable names. We escape them to prevent conflicts. Move escaping into its own function so the next patch can reuse it. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
Generate .stp file (DTrace with SystemTAP only).
|
|
"""
|
|
|
|
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
|
|
__copyright__ = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>"
|
|
__license__ = "GPL version 2 or (at your option) any later version"
|
|
|
|
__maintainer__ = "Stefan Hajnoczi"
|
|
__email__ = "stefanha@linux.vnet.ibm.com"
|
|
|
|
|
|
from tracetool import out
|
|
from tracetool.backend.dtrace import binary, probeprefix
|
|
|
|
|
|
# Technically 'self' is not used by systemtap yet, but
|
|
# they recommended we keep it in the reserved list anyway
|
|
RESERVED_WORDS = (
|
|
'break', 'catch', 'continue', 'delete', 'else', 'for',
|
|
'foreach', 'function', 'global', 'if', 'in', 'limit',
|
|
'long', 'next', 'probe', 'return', 'self', 'string',
|
|
'try', 'while'
|
|
)
|
|
|
|
|
|
def stap_escape(identifier):
|
|
# Append underscore to reserved keywords
|
|
if identifier in RESERVED_WORDS:
|
|
return identifier + '_'
|
|
return identifier
|
|
|
|
|
|
def generate(events, backend):
|
|
events = [e for e in events
|
|
if "disable" not in e.properties]
|
|
|
|
out('/* This file is autogenerated by tracetool, do not edit. */',
|
|
'')
|
|
|
|
for e in events:
|
|
# Define prototype for probe arguments
|
|
out('probe %(probeprefix)s.%(name)s = process("%(binary)s").mark("%(name)s")',
|
|
'{',
|
|
probeprefix=probeprefix(),
|
|
name=e.name,
|
|
binary=binary())
|
|
|
|
i = 1
|
|
if len(e.args) > 0:
|
|
for name in e.args.names():
|
|
name = stap_escape(name)
|
|
out(' %s = $arg%d;' % (name, i))
|
|
i += 1
|
|
|
|
out('}')
|
|
|
|
out()
|