1#!/usr/bin/env python 2# -*- coding: utf-8 -*- 3 4""" 5trace/generated-tracers.dtrace (DTrace only). 6""" 7 8__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" 9__copyright__ = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>" 10__license__ = "GPL version 2 or (at your option) any later version" 11 12__maintainer__ = "Stefan Hajnoczi" 13__email__ = "stefanha@linux.vnet.ibm.com" 14 15 16from tracetool import out 17 18 19# Reserved keywords from 20# https://wikis.oracle.com/display/DTrace/Types,+Operators+and+Expressions 21RESERVED_WORDS = ( 22 'auto', 'goto', 'sizeof', 'break', 'if', 'static', 'case', 'import', 23 'string', 'char', 'inline', 'stringof', 'const', 'int', 'struct', 24 'continue', 'long', 'switch', 'counter', 'offsetof', 'this', 25 'default', 'probe', 'translator', 'do', 'provider', 'typedef', 26 'double', 'register', 'union', 'else', 'restrict', 'unsigned', 27 'enum', 'return', 'void', 'extern', 'self', 'volatile', 'float', 28 'short', 'while', 'for', 'signed', 'xlate', 29) 30 31 32def generate(events, backend, group): 33 events = [e for e in events 34 if "disable" not in e.properties] 35 36 # SystemTap's dtrace(1) warns about empty "provider qemu {}" but is happy 37 # with an empty file. Avoid the warning. 38 if not events: 39 return 40 41 out('/* This file is autogenerated by tracetool, do not edit. */' 42 '', 43 'provider qemu {') 44 45 for e in events: 46 args = [] 47 for type_, name in e.args: 48 if name in RESERVED_WORDS: 49 name += '_' 50 args.append(type_ + ' ' + name) 51 52 # Define prototype for probe arguments 53 out('', 54 'probe %(name)s(%(args)s);', 55 name=e.name, 56 args=','.join(args)) 57 58 out('', 59 '};') 60