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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
def c(events):
out('#include <ust/marker.h>',
'#undef mutex_lock',
'#undef mutex_unlock',
'#undef inline',
'#undef wmb',
'#include "trace.h"')
for e in events:
argnames = ", ".join(e.args.names())
if len(e.args) > 0:
argnames = ', ' + argnames
out('DEFINE_TRACE(ust_%(name)s);',
'',
'static void ust_%(name)s_probe(%(args)s)',
'{',
' trace_mark(ust, %(name)s, %(fmt)s%(argnames)s);',
'}',
name = e.name,
args = e.args,
fmt = e.fmt,
argnames = argnames,
)
else:
out('DEFINE_TRACE(ust_%(name)s);',
'',
'static void ust_%(name)s_probe(%(args)s)',
'{',
' trace_mark(ust, %(name)s, UST_MARKER_NOARGS);',
'}',
name = e.name,
args = e.args,
)
# register probes
out('',
'static void __attribute__((constructor)) trace_init(void)',
'{')
for e in events:
out(' register_trace_ust_%(name)s(ust_%(name)s_probe);',
name = e.name,
)
out('}')
def h(events):
out('#include <ust/tracepoint.h>',
'#undef mutex_lock',
'#undef mutex_unlock',
'#undef inline',
'#undef wmb')
for e in events:
if len(e.args) > 0:
out('DECLARE_TRACE(ust_%(name)s, TP_PROTO(%(args)s), TP_ARGS(%(argnames)s));',
'#define trace_%(name)s trace_ust_%(name)s',
name = e.name,
args = e.args,
argnames = ", ".join(e.args.names()),
)
else:
out('_DECLARE_TRACEPOINT_NOARGS(ust_%(name)s);',
'#define trace_%(name)s trace_ust_%(name)s',
name = e.name,
)
out()
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