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