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authorAlex Bennée <alex.bennee@linaro.org>2014-08-01 17:08:56 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2014-08-12 14:26:12 +0100
commit41ef7b00abff4d31814890a14e5a8e49a177508b (patch)
treed3fe2dd5854b81df8f8b063296b34f3a5af83587 /scripts
parenta7e30d84ce8109b50ee73633f72802918836b19f (diff)
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trace: teach lttng backend to use format strings
This makes the UST backend pay attention to the format string arguments that are defined when defining payload data. With this you can now ensure integers are reported in hex mode if you want. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/tracetool/__init__.py12
-rw-r--r--scripts/tracetool/format/ust_events_h.py15
2 files changed, 21 insertions, 6 deletions
diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index a51e0f2..36c789d 100644
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -136,6 +136,8 @@ class Event(object):
Properties of the event.
args : Arguments
The event arguments.
+ arg_fmts : str
+ The format strings for each argument.
"""
_CRE = re.compile("((?P<props>.*)\s+)?"
@@ -144,10 +146,11 @@ class Event(object):
"\s*"
"(?:(?:(?P<fmt_trans>\".+),)?\s*(?P<fmt>\".+))?"
"\s*")
+ _FMT = re.compile("(%\w+|%.*PRI\S+)")
_VALID_PROPS = set(["disable", "tcg", "tcg-trans", "tcg-exec"])
- def __init__(self, name, props, fmt, args, orig=None):
+ def __init__(self, name, props, fmt, args, arg_fmts, orig=None):
"""
Parameters
----------
@@ -159,13 +162,17 @@ class Event(object):
Event printing format (or formats).
args : Arguments
Event arguments.
+ arg_fmts : list of str
+ Format strings for each argument.
orig : Event or None
Original Event before transformation.
+
"""
self.name = name
self.properties = props
self.fmt = fmt
self.args = args
+ self.arg_fmts = arg_fmts
if orig is None:
self.original = weakref.ref(self)
@@ -203,6 +210,7 @@ class Event(object):
if len(fmt_trans) > 0:
fmt = [fmt_trans, fmt]
args = Arguments.build(groups["args"])
+ arg_fmts = Event._FMT.findall(fmt)
if "tcg-trans" in props:
raise ValueError("Invalid property 'tcg-trans'")
@@ -213,7 +221,7 @@ class Event(object):
if "tcg" in props and isinstance(fmt, str):
raise ValueError("Events with 'tcg' property must have two formats")
- return Event(name, props, fmt, args)
+ return Event(name, props, fmt, args, arg_fmts)
def __repr__(self):
"""Evaluable string representation for this object."""
diff --git a/scripts/tracetool/format/ust_events_h.py b/scripts/tracetool/format/ust_events_h.py
index 5102565..d189899 100644
--- a/scripts/tracetool/format/ust_events_h.py
+++ b/scripts/tracetool/format/ust_events_h.py
@@ -63,13 +63,20 @@ def generate(events, backend):
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):
+ types = e.args.types()
+ names = e.args.names()
+ fmts = e.arg_fmts
+ for t,n,f in zip(types, names, fmts):
+ if ('char *' in t) or ('char*' in t):
+ out(' ctf_string(' + n + ', ' + n + ')')
+ elif ("%p" in f) or ("x" in f) or ("PRIx" in f):
+ out(' ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
+ elif ("ptr" in t) or ("*" in t):
+ out(' ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
+ elif ('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 + ')')