| # -*- coding: utf-8 -*- |
| |
| """ |
| trace/generated-tracers.dtrace (DTrace 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@redhat.com" |
| |
| |
| from tracetool import out |
| |
| |
| # Reserved keywords from |
| # https://wikis.oracle.com/display/DTrace/Types,+Operators+and+Expressions |
| RESERVED_WORDS = ( |
| 'auto', 'goto', 'sizeof', 'break', 'if', 'static', 'case', 'import', |
| 'string', 'char', 'inline', 'stringof', 'const', 'int', 'struct', |
| 'continue', 'long', 'switch', 'counter', 'offsetof', 'this', |
| 'default', 'probe', 'translator', 'do', 'provider', 'typedef', |
| 'double', 'register', 'union', 'else', 'restrict', 'unsigned', |
| 'enum', 'return', 'void', 'extern', 'self', 'volatile', 'float', |
| 'short', 'while', 'for', 'signed', 'xlate', |
| ) |
| |
| |
| def generate(events, backend, group): |
| events = [e for e in events |
| if "disable" not in e.properties] |
| |
| # SystemTap's dtrace(1) warns about empty "provider qemu {}" but is happy |
| # with an empty file. Avoid the warning. |
| if not events: |
| return |
| |
| out('/* This file is autogenerated by tracetool, do not edit. */' |
| '', |
| 'provider qemu {') |
| |
| for e in events: |
| args = [] |
| for type_, name in e.args: |
| if name in RESERVED_WORDS: |
| name += '_' |
| args.append(type_ + ' ' + name) |
| |
| # Define prototype for probe arguments |
| out('', |
| 'probe %(name)s(%(args)s);', |
| name=e.name, |
| args=','.join(args)) |
| |
| out('', |
| '};') |
