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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
LTTng User Space Tracing backend.
"""
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
__copyright__ = "Copyright 2012, 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
PUBLIC = True
def c(events):
pass
def h(events):
out('#include <lttng/tracepoint.h>',
'#include "trace/generated-ust-provider.h"',
'')
for e in events:
argnames = ", ".join(e.args.names())
if len(e.args) > 0:
argnames = ", " + argnames
out('static inline void trace_%(name)s(%(args)s)',
'{',
' tracepoint(qemu, %(name)s%(tp_args)s);',
'}',
'',
name = e.name,
args = e.args,
tp_args = argnames,
)
def ust_events_c(events):
pass
def ust_events_h(events):
for e in events:
if len(e.args) > 0:
out('TRACEPOINT_EVENT(',
' qemu,',
' %(name)s,',
' TP_ARGS(%(args)s),',
' TP_FIELDS(',
name = e.name,
args = ", ".join(", ".join(i) for i in e.args),
)
for t,n in e.args:
if ('int' in t) or ('long' in t) or ('unsigned' in t) or ('size_t' in t):
out(' ctf_integer(' + t + ', ' + n + ', ' + n + ')')
elif ('double' in t) or ('float' in t):
out(' ctf_float(' + t + ', ' + n + ', ' + n + ')')
elif ('char *' in t) or ('char*' in t):
out(' ctf_string(' + n + ', ' + n + ')')
elif ('void *' in t) or ('void*' in t):
out(' ctf_integer_hex(unsigned long, ' + n + ', ' + n + ')')
out(' )',
')',
'')
else:
out('TRACEPOINT_EVENT(',
' qemu,',
' %(name)s,',
' TP_ARGS(void),',
' TP_FIELDS()',
')',
'',
name = e.name,
)
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